CHANGES revision 344604
1 2 OpenSSL CHANGES 3 _______________ 4 5 This is a high-level summary of the most important changes. 6 For a full list of changes, see the git commit log; for example, 7 https://github.com/openssl/openssl/commits/ and pick the appropriate 8 release branch. 9 10 Changes between 1.0.2q and 1.0.2r [26 Feb 2019] 11 12 *) 0-byte record padding oracle 13 14 If an application encounters a fatal protocol error and then calls 15 SSL_shutdown() twice (once to send a close_notify, and once to receive one) 16 then OpenSSL can respond differently to the calling application if a 0 byte 17 record is received with invalid padding compared to if a 0 byte record is 18 received with an invalid MAC. If the application then behaves differently 19 based on that in a way that is detectable to the remote peer, then this 20 amounts to a padding oracle that could be used to decrypt data. 21 22 In order for this to be exploitable "non-stitched" ciphersuites must be in 23 use. Stitched ciphersuites are optimised implementations of certain 24 commonly used ciphersuites. Also the application must call SSL_shutdown() 25 twice even if a protocol error has occurred (applications should not do 26 this but some do anyway). 27 28 This issue was discovered by Juraj Somorovsky, Robert Merget and Nimrod 29 Aviram, with additional investigation by Steven Collison and Andrew 30 Hourselt. It was reported to OpenSSL on 10th December 2018. 31 (CVE-2019-1559) 32 [Matt Caswell] 33 34 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0(). 35 [Richard Levitte] 36 37 Changes between 1.0.2p and 1.0.2q [20 Nov 2018] 38 39 *) Microarchitecture timing vulnerability in ECC scalar multiplication 40 41 OpenSSL ECC scalar multiplication, used in e.g. ECDSA and ECDH, has been 42 shown to be vulnerable to a microarchitecture timing side channel attack. 43 An attacker with sufficient access to mount local timing attacks during 44 ECDSA signature generation could recover the private key. 45 46 This issue was reported to OpenSSL on 26th October 2018 by Alejandro 47 Cabrera Aldaya, Billy Brumley, Sohaib ul Hassan, Cesar Pereida Garcia and 48 Nicola Tuveri. 49 (CVE-2018-5407) 50 [Billy Brumley] 51 52 *) Timing vulnerability in DSA signature generation 53 54 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a 55 timing side channel attack. An attacker could use variations in the signing 56 algorithm to recover the private key. 57 58 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser. 59 (CVE-2018-0734) 60 [Paul Dale] 61 62 *) Resolve a compatibility issue in EC_GROUP handling with the FIPS Object 63 Module, accidentally introduced while backporting security fixes from the 64 development branch and hindering the use of ECC in FIPS mode. 65 [Nicola Tuveri] 66 67 Changes between 1.0.2o and 1.0.2p [14 Aug 2018] 68 69 *) Client DoS due to large DH parameter 70 71 During key agreement in a TLS handshake using a DH(E) based ciphersuite a 72 malicious server can send a very large prime value to the client. This will 73 cause the client to spend an unreasonably long period of time generating a 74 key for this prime resulting in a hang until the client has finished. This 75 could be exploited in a Denial Of Service attack. 76 77 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken 78 (CVE-2018-0732) 79 [Guido Vranken] 80 81 *) Cache timing vulnerability in RSA Key Generation 82 83 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to 84 a cache timing side channel attack. An attacker with sufficient access to 85 mount cache timing attacks during the RSA key generation process could 86 recover the private key. 87 88 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera 89 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia. 90 (CVE-2018-0737) 91 [Billy Brumley] 92 93 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str 94 parameter is no longer accepted, as it leads to a corrupt table. NULL 95 pem_str is reserved for alias entries only. 96 [Richard Levitte] 97 98 *) Revert blinding in ECDSA sign and instead make problematic addition 99 length-invariant. Switch even to fixed-length Montgomery multiplication. 100 [Andy Polyakov] 101 102 *) Change generating and checking of primes so that the error rate of not 103 being prime depends on the intended use based on the size of the input. 104 For larger primes this will result in more rounds of Miller-Rabin. 105 The maximal error rate for primes with more than 1080 bits is lowered 106 to 2^-128. 107 [Kurt Roeckx, Annie Yousar] 108 109 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64. 110 [Kurt Roeckx] 111 112 *) Add blinding to ECDSA and DSA signatures to protect against side channel 113 attacks discovered by Keegan Ryan (NCC Group). 114 [Matt Caswell] 115 116 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we 117 now allow empty (zero character) pass phrases. 118 [Richard Levitte] 119 120 *) Certificate time validation (X509_cmp_time) enforces stricter 121 compliance with RFC 5280. Fractional seconds and timezone offsets 122 are no longer allowed. 123 [Emilia K��sper] 124 125 Changes between 1.0.2n and 1.0.2o [27 Mar 2018] 126 127 *) Constructed ASN.1 types with a recursive definition could exceed the stack 128 129 Constructed ASN.1 types with a recursive definition (such as can be found 130 in PKCS7) could eventually exceed the stack given malicious input with 131 excessive recursion. This could result in a Denial Of Service attack. There 132 are no such structures used within SSL/TLS that come from untrusted sources 133 so this is considered safe. 134 135 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz 136 project. 137 (CVE-2018-0739) 138 [Matt Caswell] 139 140 Changes between 1.0.2m and 1.0.2n [7 Dec 2017] 141 142 *) Read/write after SSL object in error state 143 144 OpenSSL 1.0.2 (starting from version 1.0.2b) introduced an "error state" 145 mechanism. The intent was that if a fatal error occurred during a handshake 146 then OpenSSL would move into the error state and would immediately fail if 147 you attempted to continue the handshake. This works as designed for the 148 explicit handshake functions (SSL_do_handshake(), SSL_accept() and 149 SSL_connect()), however due to a bug it does not work correctly if 150 SSL_read() or SSL_write() is called directly. In that scenario, if the 151 handshake fails then a fatal error will be returned in the initial function 152 call. If SSL_read()/SSL_write() is subsequently called by the application 153 for the same SSL object then it will succeed and the data is passed without 154 being decrypted/encrypted directly from the SSL/TLS record layer. 155 156 In order to exploit this issue an application bug would have to be present 157 that resulted in a call to SSL_read()/SSL_write() being issued after having 158 already received a fatal error. 159 160 This issue was reported to OpenSSL by David Benjamin (Google). 161 (CVE-2017-3737) 162 [Matt Caswell] 163 164 *) rsaz_1024_mul_avx2 overflow bug on x86_64 165 166 There is an overflow bug in the AVX2 Montgomery multiplication procedure 167 used in exponentiation with 1024-bit moduli. No EC algorithms are affected. 168 Analysis suggests that attacks against RSA and DSA as a result of this 169 defect would be very difficult to perform and are not believed likely. 170 Attacks against DH1024 are considered just feasible, because most of the 171 work necessary to deduce information about a private key may be performed 172 offline. The amount of resources required for such an attack would be 173 significant. However, for an attack on TLS to be meaningful, the server 174 would have to share the DH1024 private key among multiple clients, which is 175 no longer an option since CVE-2016-0701. 176 177 This only affects processors that support the AVX2 but not ADX extensions 178 like Intel Haswell (4th generation). 179 180 This issue was reported to OpenSSL by David Benjamin (Google). The issue 181 was originally found via the OSS-Fuzz project. 182 (CVE-2017-3738) 183 [Andy Polyakov] 184 185 Changes between 1.0.2l and 1.0.2m [2 Nov 2017] 186 187 *) bn_sqrx8x_internal carry bug on x86_64 188 189 There is a carry propagating bug in the x86_64 Montgomery squaring 190 procedure. No EC algorithms are affected. Analysis suggests that attacks 191 against RSA and DSA as a result of this defect would be very difficult to 192 perform and are not believed likely. Attacks against DH are considered just 193 feasible (although very difficult) because most of the work necessary to 194 deduce information about a private key may be performed offline. The amount 195 of resources required for such an attack would be very significant and 196 likely only accessible to a limited number of attackers. An attacker would 197 additionally need online access to an unpatched system using the target 198 private key in a scenario with persistent DH parameters and a private 199 key that is shared between multiple clients. 200 201 This only affects processors that support the BMI1, BMI2 and ADX extensions 202 like Intel Broadwell (5th generation) and later or AMD Ryzen. 203 204 This issue was reported to OpenSSL by the OSS-Fuzz project. 205 (CVE-2017-3736) 206 [Andy Polyakov] 207 208 *) Malformed X.509 IPAddressFamily could cause OOB read 209 210 If an X.509 certificate has a malformed IPAddressFamily extension, 211 OpenSSL could do a one-byte buffer overread. The most likely result 212 would be an erroneous display of the certificate in text format. 213 214 This issue was reported to OpenSSL by the OSS-Fuzz project. 215 (CVE-2017-3735) 216 [Rich Salz] 217 218 Changes between 1.0.2k and 1.0.2l [25 May 2017] 219 220 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target 221 platform rather than 'mingw'. 222 [Richard Levitte] 223 224 Changes between 1.0.2j and 1.0.2k [26 Jan 2017] 225 226 *) Truncated packet could crash via OOB read 227 228 If one side of an SSL/TLS path is running on a 32-bit host and a specific 229 cipher is being used, then a truncated packet can cause that host to 230 perform an out-of-bounds read, usually resulting in a crash. 231 232 This issue was reported to OpenSSL by Robert ��wi��cki of Google. 233 (CVE-2017-3731) 234 [Andy Polyakov] 235 236 *) BN_mod_exp may produce incorrect results on x86_64 237 238 There is a carry propagating bug in the x86_64 Montgomery squaring 239 procedure. No EC algorithms are affected. Analysis suggests that attacks 240 against RSA and DSA as a result of this defect would be very difficult to 241 perform and are not believed likely. Attacks against DH are considered just 242 feasible (although very difficult) because most of the work necessary to 243 deduce information about a private key may be performed offline. The amount 244 of resources required for such an attack would be very significant and 245 likely only accessible to a limited number of attackers. An attacker would 246 additionally need online access to an unpatched system using the target 247 private key in a scenario with persistent DH parameters and a private 248 key that is shared between multiple clients. For example this can occur by 249 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very 250 similar to CVE-2015-3193 but must be treated as a separate problem. 251 252 This issue was reported to OpenSSL by the OSS-Fuzz project. 253 (CVE-2017-3732) 254 [Andy Polyakov] 255 256 *) Montgomery multiplication may produce incorrect results 257 258 There is a carry propagating bug in the Broadwell-specific Montgomery 259 multiplication procedure that handles input lengths divisible by, but 260 longer than 256 bits. Analysis suggests that attacks against RSA, DSA 261 and DH private keys are impossible. This is because the subroutine in 262 question is not used in operations with the private key itself and an input 263 of the attacker's direct choice. Otherwise the bug can manifest itself as 264 transient authentication and key negotiation failures or reproducible 265 erroneous outcome of public-key operations with specially crafted input. 266 Among EC algorithms only Brainpool P-512 curves are affected and one 267 presumably can attack ECDH key negotiation. Impact was not analyzed in 268 detail, because pre-requisites for attack are considered unlikely. Namely 269 multiple clients have to choose the curve in question and the server has to 270 share the private key among them, neither of which is default behaviour. 271 Even then only clients that chose the curve will be affected. 272 273 This issue was publicly reported as transient failures and was not 274 initially recognized as a security issue. Thanks to Richard Morgan for 275 providing reproducible case. 276 (CVE-2016-7055) 277 [Andy Polyakov] 278 279 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0 280 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to 281 prevent issues where no progress is being made and the peer continually 282 sends unrecognised record types, using up resources processing them. 283 [Matt Caswell] 284 285 Changes between 1.0.2i and 1.0.2j [26 Sep 2016] 286 287 *) Missing CRL sanity check 288 289 A bug fix which included a CRL sanity check was added to OpenSSL 1.1.0 290 but was omitted from OpenSSL 1.0.2i. As a result any attempt to use 291 CRLs in OpenSSL 1.0.2i will crash with a null pointer exception. 292 293 This issue only affects the OpenSSL 1.0.2i 294 (CVE-2016-7052) 295 [Matt Caswell] 296 297 Changes between 1.0.2h and 1.0.2i [22 Sep 2016] 298 299 *) OCSP Status Request extension unbounded memory growth 300 301 A malicious client can send an excessively large OCSP Status Request 302 extension. If that client continually requests renegotiation, sending a 303 large OCSP Status Request extension each time, then there will be unbounded 304 memory growth on the server. This will eventually lead to a Denial Of 305 Service attack through memory exhaustion. Servers with a default 306 configuration are vulnerable even if they do not support OCSP. Builds using 307 the "no-ocsp" build time option are not affected. 308 309 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) 310 (CVE-2016-6304) 311 [Matt Caswell] 312 313 *) In order to mitigate the SWEET32 attack, the DES ciphers were moved from 314 HIGH to MEDIUM. 315 316 This issue was reported to OpenSSL Karthikeyan Bhargavan and Gaetan 317 Leurent (INRIA) 318 (CVE-2016-2183) 319 [Rich Salz] 320 321 *) OOB write in MDC2_Update() 322 323 An overflow can occur in MDC2_Update() either if called directly or 324 through the EVP_DigestUpdate() function using MDC2. If an attacker 325 is able to supply very large amounts of input data after a previous 326 call to EVP_EncryptUpdate() with a partial block then a length check 327 can overflow resulting in a heap corruption. 328 329 The amount of data needed is comparable to SIZE_MAX which is impractical 330 on most platforms. 331 332 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) 333 (CVE-2016-6303) 334 [Stephen Henson] 335 336 *) Malformed SHA512 ticket DoS 337 338 If a server uses SHA512 for TLS session ticket HMAC it is vulnerable to a 339 DoS attack where a malformed ticket will result in an OOB read which will 340 ultimately crash. 341 342 The use of SHA512 in TLS session tickets is comparatively rare as it requires 343 a custom server callback and ticket lookup mechanism. 344 345 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) 346 (CVE-2016-6302) 347 [Stephen Henson] 348 349 *) OOB write in BN_bn2dec() 350 351 The function BN_bn2dec() does not check the return value of BN_div_word(). 352 This can cause an OOB write if an application uses this function with an 353 overly large BIGNUM. This could be a problem if an overly large certificate 354 or CRL is printed out from an untrusted source. TLS is not affected because 355 record limits will reject an oversized certificate before it is parsed. 356 357 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) 358 (CVE-2016-2182) 359 [Stephen Henson] 360 361 *) OOB read in TS_OBJ_print_bio() 362 363 The function TS_OBJ_print_bio() misuses OBJ_obj2txt(): the return value is 364 the total length the OID text representation would use and not the amount 365 of data written. This will result in OOB reads when large OIDs are 366 presented. 367 368 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) 369 (CVE-2016-2180) 370 [Stephen Henson] 371 372 *) Pointer arithmetic undefined behaviour 373 374 Avoid some undefined pointer arithmetic 375 376 A common idiom in the codebase is to check limits in the following manner: 377 "p + len > limit" 378 379 Where "p" points to some malloc'd data of SIZE bytes and 380 limit == p + SIZE 381 382 "len" here could be from some externally supplied data (e.g. from a TLS 383 message). 384 385 The rules of C pointer arithmetic are such that "p + len" is only well 386 defined where len <= SIZE. Therefore the above idiom is actually 387 undefined behaviour. 388 389 For example this could cause problems if some malloc implementation 390 provides an address for "p" such that "p + len" actually overflows for 391 values of len that are too big and therefore p + len < limit. 392 393 This issue was reported to OpenSSL by Guido Vranken 394 (CVE-2016-2177) 395 [Matt Caswell] 396 397 *) Constant time flag not preserved in DSA signing 398 399 Operations in the DSA signing algorithm should run in constant time in 400 order to avoid side channel attacks. A flaw in the OpenSSL DSA 401 implementation means that a non-constant time codepath is followed for 402 certain operations. This has been demonstrated through a cache-timing 403 attack to be sufficient for an attacker to recover the private DSA key. 404 405 This issue was reported by C��sar Pereida (Aalto University), Billy Brumley 406 (Tampere University of Technology), and Yuval Yarom (The University of 407 Adelaide and NICTA). 408 (CVE-2016-2178) 409 [C��sar Pereida] 410 411 *) DTLS buffered message DoS 412 413 In a DTLS connection where handshake messages are delivered out-of-order 414 those messages that OpenSSL is not yet ready to process will be buffered 415 for later use. Under certain circumstances, a flaw in the logic means that 416 those messages do not get removed from the buffer even though the handshake 417 has been completed. An attacker could force up to approx. 15 messages to 418 remain in the buffer when they are no longer required. These messages will 419 be cleared when the DTLS connection is closed. The default maximum size for 420 a message is 100k. Therefore the attacker could force an additional 1500k 421 to be consumed per connection. By opening many simulataneous connections an 422 attacker could cause a DoS attack through memory exhaustion. 423 424 This issue was reported to OpenSSL by Quan Luo. 425 (CVE-2016-2179) 426 [Matt Caswell] 427 428 *) DTLS replay protection DoS 429 430 A flaw in the DTLS replay attack protection mechanism means that records 431 that arrive for future epochs update the replay protection "window" before 432 the MAC for the record has been validated. This could be exploited by an 433 attacker by sending a record for the next epoch (which does not have to 434 decrypt or have a valid MAC), with a very large sequence number. This means 435 that all subsequent legitimate packets are dropped causing a denial of 436 service for a specific DTLS connection. 437 438 This issue was reported to OpenSSL by the OCAP audit team. 439 (CVE-2016-2181) 440 [Matt Caswell] 441 442 *) Certificate message OOB reads 443 444 In OpenSSL 1.0.2 and earlier some missing message length checks can result 445 in OOB reads of up to 2 bytes beyond an allocated buffer. There is a 446 theoretical DoS risk but this has not been observed in practice on common 447 platforms. 448 449 The messages affected are client certificate, client certificate request 450 and server certificate. As a result the attack can only be performed 451 against a client or a server which enables client authentication. 452 453 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) 454 (CVE-2016-6306) 455 [Stephen Henson] 456 457 Changes between 1.0.2g and 1.0.2h [3 May 2016] 458 459 *) Prevent padding oracle in AES-NI CBC MAC check 460 461 A MITM attacker can use a padding oracle attack to decrypt traffic 462 when the connection uses an AES CBC cipher and the server support 463 AES-NI. 464 465 This issue was introduced as part of the fix for Lucky 13 padding 466 attack (CVE-2013-0169). The padding check was rewritten to be in 467 constant time by making sure that always the same bytes are read and 468 compared against either the MAC or padding bytes. But it no longer 469 checked that there was enough data to have both the MAC and padding 470 bytes. 471 472 This issue was reported by Juraj Somorovsky using TLS-Attacker. 473 (CVE-2016-2107) 474 [Kurt Roeckx] 475 476 *) Fix EVP_EncodeUpdate overflow 477 478 An overflow can occur in the EVP_EncodeUpdate() function which is used for 479 Base64 encoding of binary data. If an attacker is able to supply very large 480 amounts of input data then a length check can overflow resulting in a heap 481 corruption. 482 483 Internally to OpenSSL the EVP_EncodeUpdate() function is primarly used by 484 the PEM_write_bio* family of functions. These are mainly used within the 485 OpenSSL command line applications, so any application which processes data 486 from an untrusted source and outputs it as a PEM file should be considered 487 vulnerable to this issue. User applications that call these APIs directly 488 with large amounts of untrusted data may also be vulnerable. 489 490 This issue was reported by Guido Vranken. 491 (CVE-2016-2105) 492 [Matt Caswell] 493 494 *) Fix EVP_EncryptUpdate overflow 495 496 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker 497 is able to supply very large amounts of input data after a previous call to 498 EVP_EncryptUpdate() with a partial block then a length check can overflow 499 resulting in a heap corruption. Following an analysis of all OpenSSL 500 internal usage of the EVP_EncryptUpdate() function all usage is one of two 501 forms. The first form is where the EVP_EncryptUpdate() call is known to be 502 the first called function after an EVP_EncryptInit(), and therefore that 503 specific call must be safe. The second form is where the length passed to 504 EVP_EncryptUpdate() can be seen from the code to be some small value and 505 therefore there is no possibility of an overflow. Since all instances are 506 one of these two forms, it is believed that there can be no overflows in 507 internal code due to this problem. It should be noted that 508 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths. 509 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances 510 of these calls have also been analysed too and it is believed there are no 511 instances in internal usage where an overflow could occur. 512 513 This issue was reported by Guido Vranken. 514 (CVE-2016-2106) 515 [Matt Caswell] 516 517 *) Prevent ASN.1 BIO excessive memory allocation 518 519 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio() 520 a short invalid encoding can casuse allocation of large amounts of memory 521 potentially consuming excessive resources or exhausting memory. 522 523 Any application parsing untrusted data through d2i BIO functions is 524 affected. The memory based functions such as d2i_X509() are *not* affected. 525 Since the memory based functions are used by the TLS library, TLS 526 applications are not affected. 527 528 This issue was reported by Brian Carpenter. 529 (CVE-2016-2109) 530 [Stephen Henson] 531 532 *) EBCDIC overread 533 534 ASN1 Strings that are over 1024 bytes can cause an overread in applications 535 using the X509_NAME_oneline() function on EBCDIC systems. This could result 536 in arbitrary stack data being returned in the buffer. 537 538 This issue was reported by Guido Vranken. 539 (CVE-2016-2176) 540 [Matt Caswell] 541 542 *) Modify behavior of ALPN to invoke callback after SNI/servername 543 callback, such that updates to the SSL_CTX affect ALPN. 544 [Todd Short] 545 546 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the 547 default. 548 [Kurt Roeckx] 549 550 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the 551 methods are enabled and ssl2 is disabled the methods return NULL. 552 [Kurt Roeckx] 553 554 Changes between 1.0.2f and 1.0.2g [1 Mar 2016] 555 556 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL. 557 Builds that are not configured with "enable-weak-ssl-ciphers" will not 558 provide any "EXPORT" or "LOW" strength ciphers. 559 [Viktor Dukhovni] 560 561 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2 562 is by default disabled at build-time. Builds that are not configured with 563 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used, 564 users who want to negotiate SSLv2 via the version-flexible SSLv23_method() 565 will need to explicitly call either of: 566 567 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2); 568 or 569 SSL_clear_options(ssl, SSL_OP_NO_SSLv2); 570 571 as appropriate. Even if either of those is used, or the application 572 explicitly uses the version-specific SSLv2_method() or its client and 573 server variants, SSLv2 ciphers vulnerable to exhaustive search key 574 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT 575 ciphers, and SSLv2 56-bit DES are no longer available. 576 (CVE-2016-0800) 577 [Viktor Dukhovni] 578 579 *) Fix a double-free in DSA code 580 581 A double free bug was discovered when OpenSSL parses malformed DSA private 582 keys and could lead to a DoS attack or memory corruption for applications 583 that receive DSA private keys from untrusted sources. This scenario is 584 considered rare. 585 586 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using 587 libFuzzer. 588 (CVE-2016-0705) 589 [Stephen Henson] 590 591 *) Disable SRP fake user seed to address a server memory leak. 592 593 Add a new method SRP_VBASE_get1_by_user that handles the seed properly. 594 595 SRP_VBASE_get_by_user had inconsistent memory management behaviour. 596 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user 597 was changed to ignore the "fake user" SRP seed, even if the seed 598 is configured. 599 600 Users should use SRP_VBASE_get1_by_user instead. Note that in 601 SRP_VBASE_get1_by_user, caller must free the returned value. Note 602 also that even though configuring the SRP seed attempts to hide 603 invalid usernames by continuing the handshake with fake 604 credentials, this behaviour is not constant time and no strong 605 guarantees are made that the handshake is indistinguishable from 606 that of a valid user. 607 (CVE-2016-0798) 608 [Emilia K��sper] 609 610 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption 611 612 In the BN_hex2bn function the number of hex digits is calculated using an 613 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For 614 large values of |i| this can result in |bn_expand| not allocating any 615 memory because |i * 4| is negative. This can leave the internal BIGNUM data 616 field as NULL leading to a subsequent NULL ptr deref. For very large values 617 of |i|, the calculation |i * 4| could be a positive value smaller than |i|. 618 In this case memory is allocated to the internal BIGNUM data field, but it 619 is insufficiently sized leading to heap corruption. A similar issue exists 620 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn 621 is ever called by user applications with very large untrusted hex/dec data. 622 This is anticipated to be a rare occurrence. 623 624 All OpenSSL internal usage of these functions use data that is not expected 625 to be untrusted, e.g. config file data or application command line 626 arguments. If user developed applications generate config file data based 627 on untrusted data then it is possible that this could also lead to security 628 consequences. This is also anticipated to be rare. 629 630 This issue was reported to OpenSSL by Guido Vranken. 631 (CVE-2016-0797) 632 [Matt Caswell] 633 634 *) Fix memory issues in BIO_*printf functions 635 636 The internal |fmtstr| function used in processing a "%s" format string in 637 the BIO_*printf functions could overflow while calculating the length of a 638 string and cause an OOB read when printing very long strings. 639 640 Additionally the internal |doapr_outch| function can attempt to write to an 641 OOB memory location (at an offset from the NULL pointer) in the event of a 642 memory allocation failure. In 1.0.2 and below this could be caused where 643 the size of a buffer to be allocated is greater than INT_MAX. E.g. this 644 could be in processing a very long "%s" format string. Memory leaks can 645 also occur. 646 647 The first issue may mask the second issue dependent on compiler behaviour. 648 These problems could enable attacks where large amounts of untrusted data 649 is passed to the BIO_*printf functions. If applications use these functions 650 in this way then they could be vulnerable. OpenSSL itself uses these 651 functions when printing out human-readable dumps of ASN.1 data. Therefore 652 applications that print this data could be vulnerable if the data is from 653 untrusted sources. OpenSSL command line applications could also be 654 vulnerable where they print out ASN.1 data, or if untrusted data is passed 655 as command line arguments. 656 657 Libssl is not considered directly vulnerable. Additionally certificates etc 658 received via remote connections via libssl are also unlikely to be able to 659 trigger these issues because of message size limits enforced within libssl. 660 661 This issue was reported to OpenSSL Guido Vranken. 662 (CVE-2016-0799) 663 [Matt Caswell] 664 665 *) Side channel attack on modular exponentiation 666 667 A side-channel attack was found which makes use of cache-bank conflicts on 668 the Intel Sandy-Bridge microarchitecture which could lead to the recovery 669 of RSA keys. The ability to exploit this issue is limited as it relies on 670 an attacker who has control of code in a thread running on the same 671 hyper-threaded core as the victim thread which is performing decryptions. 672 673 This issue was reported to OpenSSL by Yuval Yarom, The University of 674 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and 675 Nadia Heninger, University of Pennsylvania with more information at 676 http://cachebleed.info. 677 (CVE-2016-0702) 678 [Andy Polyakov] 679 680 *) Change the req app to generate a 2048-bit RSA/DSA key by default, 681 if no keysize is specified with default_bits. This fixes an 682 omission in an earlier change that changed all RSA/DSA key generation 683 apps to use 2048 bits by default. 684 [Emilia K��sper] 685 686 Changes between 1.0.2e and 1.0.2f [28 Jan 2016] 687 688 *) DH small subgroups 689 690 Historically OpenSSL only ever generated DH parameters based on "safe" 691 primes. More recently (in version 1.0.2) support was provided for 692 generating X9.42 style parameter files such as those required for RFC 5114 693 support. The primes used in such files may not be "safe". Where an 694 application is using DH configured with parameters based on primes that are 695 not "safe" then an attacker could use this fact to find a peer's private 696 DH exponent. This attack requires that the attacker complete multiple 697 handshakes in which the peer uses the same private DH exponent. For example 698 this could be used to discover a TLS server's private DH exponent if it's 699 reusing the private DH exponent or it's using a static DH ciphersuite. 700 701 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in 702 TLS. It is not on by default. If the option is not set then the server 703 reuses the same private DH exponent for the life of the server process and 704 would be vulnerable to this attack. It is believed that many popular 705 applications do set this option and would therefore not be at risk. 706 707 The fix for this issue adds an additional check where a "q" parameter is 708 available (as is the case in X9.42 based parameters). This detects the 709 only known attack, and is the only possible defense for static DH 710 ciphersuites. This could have some performance impact. 711 712 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by 713 default and cannot be disabled. This could have some performance impact. 714 715 This issue was reported to OpenSSL by Antonio Sanso (Adobe). 716 (CVE-2016-0701) 717 [Matt Caswell] 718 719 *) SSLv2 doesn't block disabled ciphers 720 721 A malicious client can negotiate SSLv2 ciphers that have been disabled on 722 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have 723 been disabled, provided that the SSLv2 protocol was not also disabled via 724 SSL_OP_NO_SSLv2. 725 726 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram 727 and Sebastian Schinzel. 728 (CVE-2015-3197) 729 [Viktor Dukhovni] 730 731 *) Reject DH handshakes with parameters shorter than 1024 bits. 732 [Kurt Roeckx] 733 734 Changes between 1.0.2d and 1.0.2e [3 Dec 2015] 735 736 *) BN_mod_exp may produce incorrect results on x86_64 737 738 There is a carry propagating bug in the x86_64 Montgomery squaring 739 procedure. No EC algorithms are affected. Analysis suggests that attacks 740 against RSA and DSA as a result of this defect would be very difficult to 741 perform and are not believed likely. Attacks against DH are considered just 742 feasible (although very difficult) because most of the work necessary to 743 deduce information about a private key may be performed offline. The amount 744 of resources required for such an attack would be very significant and 745 likely only accessible to a limited number of attackers. An attacker would 746 additionally need online access to an unpatched system using the target 747 private key in a scenario with persistent DH parameters and a private 748 key that is shared between multiple clients. For example this can occur by 749 default in OpenSSL DHE based SSL/TLS ciphersuites. 750 751 This issue was reported to OpenSSL by Hanno B��ck. 752 (CVE-2015-3193) 753 [Andy Polyakov] 754 755 *) Certificate verify crash with missing PSS parameter 756 757 The signature verification routines will crash with a NULL pointer 758 dereference if presented with an ASN.1 signature using the RSA PSS 759 algorithm and absent mask generation function parameter. Since these 760 routines are used to verify certificate signature algorithms this can be 761 used to crash any certificate verification operation and exploited in a 762 DoS attack. Any application which performs certificate verification is 763 vulnerable including OpenSSL clients and servers which enable client 764 authentication. 765 766 This issue was reported to OpenSSL by Lo��c Jonas Etienne (Qnective AG). 767 (CVE-2015-3194) 768 [Stephen Henson] 769 770 *) X509_ATTRIBUTE memory leak 771 772 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak 773 memory. This structure is used by the PKCS#7 and CMS routines so any 774 application which reads PKCS#7 or CMS data from untrusted sources is 775 affected. SSL/TLS is not affected. 776 777 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using 778 libFuzzer. 779 (CVE-2015-3195) 780 [Stephen Henson] 781 782 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs. 783 This changes the decoding behaviour for some invalid messages, 784 though the change is mostly in the more lenient direction, and 785 legacy behaviour is preserved as much as possible. 786 [Emilia K��sper] 787 788 *) In DSA_generate_parameters_ex, if the provided seed is too short, 789 use a random seed, as already documented. 790 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>] 791 792 Changes between 1.0.2c and 1.0.2d [9 Jul 2015] 793 794 *) Alternate chains certificate forgery 795 796 During certificate verfification, OpenSSL will attempt to find an 797 alternative certificate chain if the first attempt to build such a chain 798 fails. An error in the implementation of this logic can mean that an 799 attacker could cause certain checks on untrusted certificates to be 800 bypassed, such as the CA flag, enabling them to use a valid leaf 801 certificate to act as a CA and "issue" an invalid certificate. 802 803 This issue was reported to OpenSSL by Adam Langley/David Benjamin 804 (Google/BoringSSL). 805 (CVE-2015-1793) 806 [Matt Caswell] 807 808 *) Race condition handling PSK identify hint 809 810 If PSK identity hints are received by a multi-threaded client then 811 the values are wrongly updated in the parent SSL_CTX structure. This can 812 result in a race condition potentially leading to a double free of the 813 identify hint data. 814 (CVE-2015-3196) 815 [Stephen Henson] 816 817 Changes between 1.0.2b and 1.0.2c [12 Jun 2015] 818 819 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI 820 incompatibility in the handling of HMAC. The previous ABI has now been 821 restored. 822 823 Changes between 1.0.2a and 1.0.2b [11 Jun 2015] 824 825 *) Malformed ECParameters causes infinite loop 826 827 When processing an ECParameters structure OpenSSL enters an infinite loop 828 if the curve specified is over a specially malformed binary polynomial 829 field. 830 831 This can be used to perform denial of service against any 832 system which processes public keys, certificate requests or 833 certificates. This includes TLS clients and TLS servers with 834 client authentication enabled. 835 836 This issue was reported to OpenSSL by Joseph Barr-Pixton. 837 (CVE-2015-1788) 838 [Andy Polyakov] 839 840 *) Exploitable out-of-bounds read in X509_cmp_time 841 842 X509_cmp_time does not properly check the length of the ASN1_TIME 843 string and can read a few bytes out of bounds. In addition, 844 X509_cmp_time accepts an arbitrary number of fractional seconds in the 845 time string. 846 847 An attacker can use this to craft malformed certificates and CRLs of 848 various sizes and potentially cause a segmentation fault, resulting in 849 a DoS on applications that verify certificates or CRLs. TLS clients 850 that verify CRLs are affected. TLS clients and servers with client 851 authentication enabled may be affected if they use custom verification 852 callbacks. 853 854 This issue was reported to OpenSSL by Robert Swiecki (Google), and 855 independently by Hanno B��ck. 856 (CVE-2015-1789) 857 [Emilia K��sper] 858 859 *) PKCS7 crash with missing EnvelopedContent 860 861 The PKCS#7 parsing code does not handle missing inner EncryptedContent 862 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs 863 with missing content and trigger a NULL pointer dereference on parsing. 864 865 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7 866 structures from untrusted sources are affected. OpenSSL clients and 867 servers are not affected. 868 869 This issue was reported to OpenSSL by Michal Zalewski (Google). 870 (CVE-2015-1790) 871 [Emilia K��sper] 872 873 *) CMS verify infinite loop with unknown hash function 874 875 When verifying a signedData message the CMS code can enter an infinite loop 876 if presented with an unknown hash function OID. This can be used to perform 877 denial of service against any system which verifies signedData messages using 878 the CMS code. 879 This issue was reported to OpenSSL by Johannes Bauer. 880 (CVE-2015-1792) 881 [Stephen Henson] 882 883 *) Race condition handling NewSessionTicket 884 885 If a NewSessionTicket is received by a multi-threaded client when attempting to 886 reuse a previous ticket then a race condition can occur potentially leading to 887 a double free of the ticket data. 888 (CVE-2015-1791) 889 [Matt Caswell] 890 891 *) Removed support for the two export grade static DH ciphersuites 892 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites 893 were newly added (along with a number of other static DH ciphersuites) to 894 1.0.2. However the two export ones have *never* worked since they were 895 introduced. It seems strange in any case to be adding new export 896 ciphersuites, and given "logjam" it also does not seem correct to fix them. 897 [Matt Caswell] 898 899 *) Only support 256-bit or stronger elliptic curves with the 900 'ecdh_auto' setting (server) or by default (client). Of supported 901 curves, prefer P-256 (both). 902 [Emilia Kasper] 903 904 *) Reject DH handshakes with parameters shorter than 768 bits. 905 [Kurt Roeckx and Emilia Kasper] 906 907 Changes between 1.0.2 and 1.0.2a [19 Mar 2015] 908 909 *) ClientHello sigalgs DoS fix 910 911 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an 912 invalid signature algorithms extension a NULL pointer dereference will 913 occur. This can be exploited in a DoS attack against the server. 914 915 This issue was was reported to OpenSSL by David Ramos of Stanford 916 University. 917 (CVE-2015-0291) 918 [Stephen Henson and Matt Caswell] 919 920 *) Multiblock corrupted pointer fix 921 922 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This 923 feature only applies on 64 bit x86 architecture platforms that support AES 924 NI instructions. A defect in the implementation of "multiblock" can cause 925 OpenSSL's internal write buffer to become incorrectly set to NULL when 926 using non-blocking IO. Typically, when the user application is using a 927 socket BIO for writing, this will only result in a failed connection. 928 However if some other BIO is used then it is likely that a segmentation 929 fault will be triggered, thus enabling a potential DoS attack. 930 931 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller. 932 (CVE-2015-0290) 933 [Matt Caswell] 934 935 *) Segmentation fault in DTLSv1_listen fix 936 937 The DTLSv1_listen function is intended to be stateless and processes the 938 initial ClientHello from many peers. It is common for user code to loop 939 over the call to DTLSv1_listen until a valid ClientHello is received with 940 an associated cookie. A defect in the implementation of DTLSv1_listen means 941 that state is preserved in the SSL object from one invocation to the next 942 that can lead to a segmentation fault. Errors processing the initial 943 ClientHello can trigger this scenario. An example of such an error could be 944 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only 945 server. 946 947 This issue was reported to OpenSSL by Per Allansson. 948 (CVE-2015-0207) 949 [Matt Caswell] 950 951 *) Segmentation fault in ASN1_TYPE_cmp fix 952 953 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is 954 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check 955 certificate signature algorithm consistency this can be used to crash any 956 certificate verification operation and exploited in a DoS attack. Any 957 application which performs certificate verification is vulnerable including 958 OpenSSL clients and servers which enable client authentication. 959 (CVE-2015-0286) 960 [Stephen Henson] 961 962 *) Segmentation fault for invalid PSS parameters fix 963 964 The signature verification routines will crash with a NULL pointer 965 dereference if presented with an ASN.1 signature using the RSA PSS 966 algorithm and invalid parameters. Since these routines are used to verify 967 certificate signature algorithms this can be used to crash any 968 certificate verification operation and exploited in a DoS attack. Any 969 application which performs certificate verification is vulnerable including 970 OpenSSL clients and servers which enable client authentication. 971 972 This issue was was reported to OpenSSL by Brian Carpenter. 973 (CVE-2015-0208) 974 [Stephen Henson] 975 976 *) ASN.1 structure reuse memory corruption fix 977 978 Reusing a structure in ASN.1 parsing may allow an attacker to cause 979 memory corruption via an invalid write. Such reuse is and has been 980 strongly discouraged and is believed to be rare. 981 982 Applications that parse structures containing CHOICE or ANY DEFINED BY 983 components may be affected. Certificate parsing (d2i_X509 and related 984 functions) are however not affected. OpenSSL clients and servers are 985 not affected. 986 (CVE-2015-0287) 987 [Stephen Henson] 988 989 *) PKCS7 NULL pointer dereferences fix 990 991 The PKCS#7 parsing code does not handle missing outer ContentInfo 992 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with 993 missing content and trigger a NULL pointer dereference on parsing. 994 995 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or 996 otherwise parse PKCS#7 structures from untrusted sources are 997 affected. OpenSSL clients and servers are not affected. 998 999 This issue was reported to OpenSSL by Michal Zalewski (Google). 1000 (CVE-2015-0289) 1001 [Emilia K��sper] 1002 1003 *) DoS via reachable assert in SSLv2 servers fix 1004 1005 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in 1006 servers that both support SSLv2 and enable export cipher suites by sending 1007 a specially crafted SSLv2 CLIENT-MASTER-KEY message. 1008 1009 This issue was discovered by Sean Burford (Google) and Emilia K��sper 1010 (OpenSSL development team). 1011 (CVE-2015-0293) 1012 [Emilia K��sper] 1013 1014 *) Empty CKE with client auth and DHE fix 1015 1016 If client auth is used then a server can seg fault in the event of a DHE 1017 ciphersuite being selected and a zero length ClientKeyExchange message 1018 being sent by the client. This could be exploited in a DoS attack. 1019 (CVE-2015-1787) 1020 [Matt Caswell] 1021 1022 *) Handshake with unseeded PRNG fix 1023 1024 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake 1025 with an unseeded PRNG. The conditions are: 1026 - The client is on a platform where the PRNG has not been seeded 1027 automatically, and the user has not seeded manually 1028 - A protocol specific client method version has been used (i.e. not 1029 SSL_client_methodv23) 1030 - A ciphersuite is used that does not require additional random data from 1031 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA). 1032 1033 If the handshake succeeds then the client random that has been used will 1034 have been generated from a PRNG with insufficient entropy and therefore the 1035 output may be predictable. 1036 1037 For example using the following command with an unseeded openssl will 1038 succeed on an unpatched platform: 1039 1040 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA 1041 (CVE-2015-0285) 1042 [Matt Caswell] 1043 1044 *) Use After Free following d2i_ECPrivatekey error fix 1045 1046 A malformed EC private key file consumed via the d2i_ECPrivateKey function 1047 could cause a use after free condition. This, in turn, could cause a double 1048 free in several private key parsing functions (such as d2i_PrivateKey 1049 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption 1050 for applications that receive EC private keys from untrusted 1051 sources. This scenario is considered rare. 1052 1053 This issue was discovered by the BoringSSL project and fixed in their 1054 commit 517073cd4b. 1055 (CVE-2015-0209) 1056 [Matt Caswell] 1057 1058 *) X509_to_X509_REQ NULL pointer deref fix 1059 1060 The function X509_to_X509_REQ will crash with a NULL pointer dereference if 1061 the certificate key is invalid. This function is rarely used in practice. 1062 1063 This issue was discovered by Brian Carpenter. 1064 (CVE-2015-0288) 1065 [Stephen Henson] 1066 1067 *) Removed the export ciphers from the DEFAULT ciphers 1068 [Kurt Roeckx] 1069 1070 Changes between 1.0.1l and 1.0.2 [22 Jan 2015] 1071 1072 *) Change RSA and DH/DSA key generation apps to generate 2048-bit 1073 keys by default. 1074 [Kurt Roeckx] 1075 1076 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g. 1077 ARMv5 through ARMv8, as opposite to "locking" it to single one. 1078 So far those who have to target multiple plaforms would compromise 1079 and argue that binary targeting say ARMv5 would still execute on 1080 ARMv8. "Universal" build resolves this compromise by providing 1081 near-optimal performance even on newer platforms. 1082 [Andy Polyakov] 1083 1084 *) Accelerated NIST P-256 elliptic curve implementation for x86_64 1085 (other platforms pending). 1086 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov] 1087 1088 *) Add support for the SignedCertificateTimestampList certificate and 1089 OCSP response extensions from RFC6962. 1090 [Rob Stradling] 1091 1092 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) 1093 for corner cases. (Certain input points at infinity could lead to 1094 bogus results, with non-infinity inputs mapped to infinity too.) 1095 [Bodo Moeller] 1096 1097 *) Initial support for PowerISA 2.0.7, first implemented in POWER8. 1098 This covers AES, SHA256/512 and GHASH. "Initial" means that most 1099 common cases are optimized and there still is room for further 1100 improvements. Vector Permutation AES for Altivec is also added. 1101 [Andy Polyakov] 1102 1103 *) Add support for little-endian ppc64 Linux target. 1104 [Marcelo Cerri (IBM)] 1105 1106 *) Initial support for AMRv8 ISA crypto extensions. This covers AES, 1107 SHA1, SHA256 and GHASH. "Initial" means that most common cases 1108 are optimized and there still is room for further improvements. 1109 Both 32- and 64-bit modes are supported. 1110 [Andy Polyakov, Ard Biesheuvel (Linaro)] 1111 1112 *) Improved ARMv7 NEON support. 1113 [Andy Polyakov] 1114 1115 *) Support for SPARC Architecture 2011 crypto extensions, first 1116 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1, 1117 SHA256/512, MD5, GHASH and modular exponentiation. 1118 [Andy Polyakov, David Miller] 1119 1120 *) Accelerated modular exponentiation for Intel processors, a.k.a. 1121 RSAZ. 1122 [Shay Gueron & Vlad Krasnov (Intel Corp)] 1123 1124 *) Support for new and upcoming Intel processors, including AVX2, 1125 BMI and SHA ISA extensions. This includes additional "stitched" 1126 implementations, AESNI-SHA256 and GCM, and multi-buffer support 1127 for TLS encrypt. 1128 1129 This work was sponsored by Intel Corp. 1130 [Andy Polyakov] 1131 1132 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method() 1133 supports both DTLS 1.2 and 1.0 and should use whatever version the peer 1134 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only. 1135 [Steve Henson] 1136 1137 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file(): 1138 this fixes a limiation in previous versions of OpenSSL. 1139 [Steve Henson] 1140 1141 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest, 1142 MGF1 digest and OAEP label. 1143 [Steve Henson] 1144 1145 *) Add EVP support for key wrapping algorithms, to avoid problems with 1146 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in 1147 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap 1148 algorithms and include tests cases. 1149 [Steve Henson] 1150 1151 *) Add functions to allocate and set the fields of an ECDSA_METHOD 1152 structure. 1153 [Douglas E. Engert, Steve Henson] 1154 1155 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the 1156 difference in days and seconds between two tm or ASN1_TIME structures. 1157 [Steve Henson] 1158 1159 *) Add -rev test option to s_server to just reverse order of characters 1160 received by client and send back to server. Also prints an abbreviated 1161 summary of the connection parameters. 1162 [Steve Henson] 1163 1164 *) New option -brief for s_client and s_server to print out a brief summary 1165 of connection parameters. 1166 [Steve Henson] 1167 1168 *) Add callbacks for arbitrary TLS extensions. 1169 [Trevor Perrin <trevp@trevp.net> and Ben Laurie] 1170 1171 *) New option -crl_download in several openssl utilities to download CRLs 1172 from CRLDP extension in certificates. 1173 [Steve Henson] 1174 1175 *) New options -CRL and -CRLform for s_client and s_server for CRLs. 1176 [Steve Henson] 1177 1178 *) New function X509_CRL_diff to generate a delta CRL from the difference 1179 of two full CRLs. Add support to "crl" utility. 1180 [Steve Henson] 1181 1182 *) New functions to set lookup_crls function and to retrieve 1183 X509_STORE from X509_STORE_CTX. 1184 [Steve Henson] 1185 1186 *) Print out deprecated issuer and subject unique ID fields in 1187 certificates. 1188 [Steve Henson] 1189 1190 *) Extend OCSP I/O functions so they can be used for simple general purpose 1191 HTTP as well as OCSP. New wrapper function which can be used to download 1192 CRLs using the OCSP API. 1193 [Steve Henson] 1194 1195 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs. 1196 [Steve Henson] 1197 1198 *) SSL_CONF* functions. These provide a common framework for application 1199 configuration using configuration files or command lines. 1200 [Steve Henson] 1201 1202 *) SSL/TLS tracing code. This parses out SSL/TLS records using the 1203 message callback and prints the results. Needs compile time option 1204 "enable-ssl-trace". New options to s_client and s_server to enable 1205 tracing. 1206 [Steve Henson] 1207 1208 *) New ctrl and macro to retrieve supported points extensions. 1209 Print out extension in s_server and s_client. 1210 [Steve Henson] 1211 1212 *) New functions to retrieve certificate signature and signature 1213 OID NID. 1214 [Steve Henson] 1215 1216 *) Add functions to retrieve and manipulate the raw cipherlist sent by a 1217 client to OpenSSL. 1218 [Steve Henson] 1219 1220 *) New Suite B modes for TLS code. These use and enforce the requirements 1221 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and 1222 only use Suite B curves. The Suite B modes can be set by using the 1223 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring. 1224 [Steve Henson] 1225 1226 *) New chain verification flags for Suite B levels of security. Check 1227 algorithms are acceptable when flags are set in X509_verify_cert. 1228 [Steve Henson] 1229 1230 *) Make tls1_check_chain return a set of flags indicating checks passed 1231 by a certificate chain. Add additional tests to handle client 1232 certificates: checks for matching certificate type and issuer name 1233 comparison. 1234 [Steve Henson] 1235 1236 *) If an attempt is made to use a signature algorithm not in the peer 1237 preference list abort the handshake. If client has no suitable 1238 signature algorithms in response to a certificate request do not 1239 use the certificate. 1240 [Steve Henson] 1241 1242 *) If server EC tmp key is not in client preference list abort handshake. 1243 [Steve Henson] 1244 1245 *) Add support for certificate stores in CERT structure. This makes it 1246 possible to have different stores per SSL structure or one store in 1247 the parent SSL_CTX. Include distint stores for certificate chain 1248 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN 1249 to build and store a certificate chain in CERT structure: returing 1250 an error if the chain cannot be built: this will allow applications 1251 to test if a chain is correctly configured. 1252 1253 Note: if the CERT based stores are not set then the parent SSL_CTX 1254 store is used to retain compatibility with existing behaviour. 1255 1256 [Steve Henson] 1257 1258 *) New function ssl_set_client_disabled to set a ciphersuite disabled 1259 mask based on the current session, check mask when sending client 1260 hello and checking the requested ciphersuite. 1261 [Steve Henson] 1262 1263 *) New ctrls to retrieve and set certificate types in a certificate 1264 request message. Print out received values in s_client. If certificate 1265 types is not set with custom values set sensible values based on 1266 supported signature algorithms. 1267 [Steve Henson] 1268 1269 *) Support for distinct client and server supported signature algorithms. 1270 [Steve Henson] 1271 1272 *) Add certificate callback. If set this is called whenever a certificate 1273 is required by client or server. An application can decide which 1274 certificate chain to present based on arbitrary criteria: for example 1275 supported signature algorithms. Add very simple example to s_server. 1276 This fixes many of the problems and restrictions of the existing client 1277 certificate callback: for example you can now clear an existing 1278 certificate and specify the whole chain. 1279 [Steve Henson] 1280 1281 *) Add new "valid_flags" field to CERT_PKEY structure which determines what 1282 the certificate can be used for (if anything). Set valid_flags field 1283 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used 1284 to have similar checks in it. 1285 1286 Add new "cert_flags" field to CERT structure and include a "strict mode". 1287 This enforces some TLS certificate requirements (such as only permitting 1288 certificate signature algorithms contained in the supported algorithms 1289 extension) which some implementations ignore: this option should be used 1290 with caution as it could cause interoperability issues. 1291 [Steve Henson] 1292 1293 *) Update and tidy signature algorithm extension processing. Work out 1294 shared signature algorithms based on preferences and peer algorithms 1295 and print them out in s_client and s_server. Abort handshake if no 1296 shared signature algorithms. 1297 [Steve Henson] 1298 1299 *) Add new functions to allow customised supported signature algorithms 1300 for SSL and SSL_CTX structures. Add options to s_client and s_server 1301 to support them. 1302 [Steve Henson] 1303 1304 *) New function SSL_certs_clear() to delete all references to certificates 1305 from an SSL structure. Before this once a certificate had been added 1306 it couldn't be removed. 1307 [Steve Henson] 1308 1309 *) Integrate hostname, email address and IP address checking with certificate 1310 verification. New verify options supporting checking in opensl utility. 1311 [Steve Henson] 1312 1313 *) Fixes and wildcard matching support to hostname and email checking 1314 functions. Add manual page. 1315 [Florian Weimer (Red Hat Product Security Team)] 1316 1317 *) New functions to check a hostname email or IP address against a 1318 certificate. Add options x509 utility to print results of checks against 1319 a certificate. 1320 [Steve Henson] 1321 1322 *) Fix OCSP checking. 1323 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie] 1324 1325 *) Initial experimental support for explicitly trusted non-root CAs. 1326 OpenSSL still tries to build a complete chain to a root but if an 1327 intermediate CA has a trust setting included that is used. The first 1328 setting is used: whether to trust (e.g., -addtrust option to the x509 1329 utility) or reject. 1330 [Steve Henson] 1331 1332 *) Add -trusted_first option which attempts to find certificates in the 1333 trusted store even if an untrusted chain is also supplied. 1334 [Steve Henson] 1335 1336 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE, 1337 platform support for Linux and Android. 1338 [Andy Polyakov] 1339 1340 *) Support for linux-x32, ILP32 environment in x86_64 framework. 1341 [Andy Polyakov] 1342 1343 *) Experimental multi-implementation support for FIPS capable OpenSSL. 1344 When in FIPS mode the approved implementations are used as normal, 1345 when not in FIPS mode the internal unapproved versions are used instead. 1346 This means that the FIPS capable OpenSSL isn't forced to use the 1347 (often lower perfomance) FIPS implementations outside FIPS mode. 1348 [Steve Henson] 1349 1350 *) Transparently support X9.42 DH parameters when calling 1351 PEM_read_bio_DHparameters. This means existing applications can handle 1352 the new parameter format automatically. 1353 [Steve Henson] 1354 1355 *) Initial experimental support for X9.42 DH parameter format: mainly 1356 to support use of 'q' parameter for RFC5114 parameters. 1357 [Steve Henson] 1358 1359 *) Add DH parameters from RFC5114 including test data to dhtest. 1360 [Steve Henson] 1361 1362 *) Support for automatic EC temporary key parameter selection. If enabled 1363 the most preferred EC parameters are automatically used instead of 1364 hardcoded fixed parameters. Now a server just has to call: 1365 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically 1366 support ECDH and use the most appropriate parameters. 1367 [Steve Henson] 1368 1369 *) Enhance and tidy EC curve and point format TLS extension code. Use 1370 static structures instead of allocation if default values are used. 1371 New ctrls to set curves we wish to support and to retrieve shared curves. 1372 Print out shared curves in s_server. New options to s_server and s_client 1373 to set list of supported curves. 1374 [Steve Henson] 1375 1376 *) New ctrls to retrieve supported signature algorithms and 1377 supported curve values as an array of NIDs. Extend openssl utility 1378 to print out received values. 1379 [Steve Henson] 1380 1381 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert 1382 between NIDs and the more common NIST names such as "P-256". Enhance 1383 ecparam utility and ECC method to recognise the NIST names for curves. 1384 [Steve Henson] 1385 1386 *) Enhance SSL/TLS certificate chain handling to support different 1387 chains for each certificate instead of one chain in the parent SSL_CTX. 1388 [Steve Henson] 1389 1390 *) Support for fixed DH ciphersuite client authentication: where both 1391 server and client use DH certificates with common parameters. 1392 [Steve Henson] 1393 1394 *) Support for fixed DH ciphersuites: those requiring DH server 1395 certificates. 1396 [Steve Henson] 1397 1398 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of 1399 the certificate. 1400 Note: Related 1.0.2-beta specific macros X509_get_cert_info, 1401 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and 1402 X509_CINF_get_signature were reverted post internal team review. 1403 1404 Changes between 1.0.1k and 1.0.1l [15 Jan 2015] 1405 1406 *) Build fixes for the Windows and OpenVMS platforms 1407 [Matt Caswell and Richard Levitte] 1408 1409 Changes between 1.0.1j and 1.0.1k [8 Jan 2015] 1410 1411 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS 1412 message can cause a segmentation fault in OpenSSL due to a NULL pointer 1413 dereference. This could lead to a Denial Of Service attack. Thanks to 1414 Markus Stenberg of Cisco Systems, Inc. for reporting this issue. 1415 (CVE-2014-3571) 1416 [Steve Henson] 1417 1418 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the 1419 dtls1_buffer_record function under certain conditions. In particular this 1420 could occur if an attacker sent repeated DTLS records with the same 1421 sequence number but for the next epoch. The memory leak could be exploited 1422 by an attacker in a Denial of Service attack through memory exhaustion. 1423 Thanks to Chris Mueller for reporting this issue. 1424 (CVE-2015-0206) 1425 [Matt Caswell] 1426 1427 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is 1428 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl 1429 method would be set to NULL which could later result in a NULL pointer 1430 dereference. Thanks to Frank Schmirler for reporting this issue. 1431 (CVE-2014-3569) 1432 [Kurt Roeckx] 1433 1434 *) Abort handshake if server key exchange message is omitted for ephemeral 1435 ECDH ciphersuites. 1436 1437 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for 1438 reporting this issue. 1439 (CVE-2014-3572) 1440 [Steve Henson] 1441 1442 *) Remove non-export ephemeral RSA code on client and server. This code 1443 violated the TLS standard by allowing the use of temporary RSA keys in 1444 non-export ciphersuites and could be used by a server to effectively 1445 downgrade the RSA key length used to a value smaller than the server 1446 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at 1447 INRIA or reporting this issue. 1448 (CVE-2015-0204) 1449 [Steve Henson] 1450 1451 *) Fixed issue where DH client certificates are accepted without verification. 1452 An OpenSSL server will accept a DH certificate for client authentication 1453 without the certificate verify message. This effectively allows a client to 1454 authenticate without the use of a private key. This only affects servers 1455 which trust a client certificate authority which issues certificates 1456 containing DH keys: these are extremely rare and hardly ever encountered. 1457 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting 1458 this issue. 1459 (CVE-2015-0205) 1460 [Steve Henson] 1461 1462 *) Ensure that the session ID context of an SSL is updated when its 1463 SSL_CTX is updated via SSL_set_SSL_CTX. 1464 1465 The session ID context is typically set from the parent SSL_CTX, 1466 and can vary with the CTX. 1467 [Adam Langley] 1468 1469 *) Fix various certificate fingerprint issues. 1470 1471 By using non-DER or invalid encodings outside the signed portion of a 1472 certificate the fingerprint can be changed without breaking the signature. 1473 Although no details of the signed portion of the certificate can be changed 1474 this can cause problems with some applications: e.g. those using the 1475 certificate fingerprint for blacklists. 1476 1477 1. Reject signatures with non zero unused bits. 1478 1479 If the BIT STRING containing the signature has non zero unused bits reject 1480 the signature. All current signature algorithms require zero unused bits. 1481 1482 2. Check certificate algorithm consistency. 1483 1484 Check the AlgorithmIdentifier inside TBS matches the one in the 1485 certificate signature. NB: this will result in signature failure 1486 errors for some broken certificates. 1487 1488 Thanks to Konrad Kraszewski from Google for reporting this issue. 1489 1490 3. Check DSA/ECDSA signatures use DER. 1491 1492 Reencode DSA/ECDSA signatures and compare with the original received 1493 signature. Return an error if there is a mismatch. 1494 1495 This will reject various cases including garbage after signature 1496 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS 1497 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs 1498 (negative or with leading zeroes). 1499 1500 Further analysis was conducted and fixes were developed by Stephen Henson 1501 of the OpenSSL core team. 1502 1503 (CVE-2014-8275) 1504 [Steve Henson] 1505 1506 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect 1507 results on some platforms, including x86_64. This bug occurs at random 1508 with a very low probability, and is not known to be exploitable in any 1509 way, though its exact impact is difficult to determine. Thanks to Pieter 1510 Wuille (Blockstream) who reported this issue and also suggested an initial 1511 fix. Further analysis was conducted by the OpenSSL development team and 1512 Adam Langley of Google. The final fix was developed by Andy Polyakov of 1513 the OpenSSL core team. 1514 (CVE-2014-3570) 1515 [Andy Polyakov] 1516 1517 *) Do not resume sessions on the server if the negotiated protocol 1518 version does not match the session's version. Resuming with a different 1519 version, while not strictly forbidden by the RFC, is of questionable 1520 sanity and breaks all known clients. 1521 [David Benjamin, Emilia K��sper] 1522 1523 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject 1524 early CCS messages during renegotiation. (Note that because 1525 renegotiation is encrypted, this early CCS was not exploitable.) 1526 [Emilia K��sper] 1527 1528 *) Tighten client-side session ticket handling during renegotiation: 1529 ensure that the client only accepts a session ticket if the server sends 1530 the extension anew in the ServerHello. Previously, a TLS client would 1531 reuse the old extension state and thus accept a session ticket if one was 1532 announced in the initial ServerHello. 1533 1534 Similarly, ensure that the client requires a session ticket if one 1535 was advertised in the ServerHello. Previously, a TLS client would 1536 ignore a missing NewSessionTicket message. 1537 [Emilia K��sper] 1538 1539 Changes between 1.0.1i and 1.0.1j [15 Oct 2014] 1540 1541 *) SRTP Memory Leak. 1542 1543 A flaw in the DTLS SRTP extension parsing code allows an attacker, who 1544 sends a carefully crafted handshake message, to cause OpenSSL to fail 1545 to free up to 64k of memory causing a memory leak. This could be 1546 exploited in a Denial Of Service attack. This issue affects OpenSSL 1547 1.0.1 server implementations for both SSL/TLS and DTLS regardless of 1548 whether SRTP is used or configured. Implementations of OpenSSL that 1549 have been compiled with OPENSSL_NO_SRTP defined are not affected. 1550 1551 The fix was developed by the OpenSSL team. 1552 (CVE-2014-3513) 1553 [OpenSSL team] 1554 1555 *) Session Ticket Memory Leak. 1556 1557 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the 1558 integrity of that ticket is first verified. In the event of a session 1559 ticket integrity check failing, OpenSSL will fail to free memory 1560 causing a memory leak. By sending a large number of invalid session 1561 tickets an attacker could exploit this issue in a Denial Of Service 1562 attack. 1563 (CVE-2014-3567) 1564 [Steve Henson] 1565 1566 *) Build option no-ssl3 is incomplete. 1567 1568 When OpenSSL is configured with "no-ssl3" as a build option, servers 1569 could accept and complete a SSL 3.0 handshake, and clients could be 1570 configured to send them. 1571 (CVE-2014-3568) 1572 [Akamai and the OpenSSL team] 1573 1574 *) Add support for TLS_FALLBACK_SCSV. 1575 Client applications doing fallback retries should call 1576 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV). 1577 (CVE-2014-3566) 1578 [Adam Langley, Bodo Moeller] 1579 1580 *) Add additional DigestInfo checks. 1581 1582 Reencode DigestInto in DER and check against the original when 1583 verifying RSA signature: this will reject any improperly encoded 1584 DigestInfo structures. 1585 1586 Note: this is a precautionary measure and no attacks are currently known. 1587 1588 [Steve Henson] 1589 1590 Changes between 1.0.1h and 1.0.1i [6 Aug 2014] 1591 1592 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the 1593 SRP code can be overrun an internal buffer. Add sanity check that 1594 g, A, B < N to SRP code. 1595 1596 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC 1597 Group for discovering this issue. 1598 (CVE-2014-3512) 1599 [Steve Henson] 1600 1601 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate 1602 TLS 1.0 instead of higher protocol versions when the ClientHello message 1603 is badly fragmented. This allows a man-in-the-middle attacker to force a 1604 downgrade to TLS 1.0 even if both the server and the client support a 1605 higher protocol version, by modifying the client's TLS records. 1606 1607 Thanks to David Benjamin and Adam Langley (Google) for discovering and 1608 researching this issue. 1609 (CVE-2014-3511) 1610 [David Benjamin] 1611 1612 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject 1613 to a denial of service attack. A malicious server can crash the client 1614 with a null pointer dereference (read) by specifying an anonymous (EC)DH 1615 ciphersuite and sending carefully crafted handshake messages. 1616 1617 Thanks to Felix Gr��bert (Google) for discovering and researching this 1618 issue. 1619 (CVE-2014-3510) 1620 [Emilia K��sper] 1621 1622 *) By sending carefully crafted DTLS packets an attacker could cause openssl 1623 to leak memory. This can be exploited through a Denial of Service attack. 1624 Thanks to Adam Langley for discovering and researching this issue. 1625 (CVE-2014-3507) 1626 [Adam Langley] 1627 1628 *) An attacker can force openssl to consume large amounts of memory whilst 1629 processing DTLS handshake messages. This can be exploited through a 1630 Denial of Service attack. 1631 Thanks to Adam Langley for discovering and researching this issue. 1632 (CVE-2014-3506) 1633 [Adam Langley] 1634 1635 *) An attacker can force an error condition which causes openssl to crash 1636 whilst processing DTLS packets due to memory being freed twice. This 1637 can be exploited through a Denial of Service attack. 1638 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching 1639 this issue. 1640 (CVE-2014-3505) 1641 [Adam Langley] 1642 1643 *) If a multithreaded client connects to a malicious server using a resumed 1644 session and the server sends an ec point format extension it could write 1645 up to 255 bytes to freed memory. 1646 1647 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this 1648 issue. 1649 (CVE-2014-3509) 1650 [Gabor Tyukasz] 1651 1652 *) A malicious server can crash an OpenSSL client with a null pointer 1653 dereference (read) by specifying an SRP ciphersuite even though it was not 1654 properly negotiated with the client. This can be exploited through a 1655 Denial of Service attack. 1656 1657 Thanks to Joonas Kuorilehto and Riku Hietam��ki (Codenomicon) for 1658 discovering and researching this issue. 1659 (CVE-2014-5139) 1660 [Steve Henson] 1661 1662 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as 1663 X509_name_oneline, X509_name_print_ex et al. to leak some information 1664 from the stack. Applications may be affected if they echo pretty printing 1665 output to the attacker. 1666 1667 Thanks to Ivan Fratric (Google) for discovering this issue. 1668 (CVE-2014-3508) 1669 [Emilia K��sper, and Steve Henson] 1670 1671 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) 1672 for corner cases. (Certain input points at infinity could lead to 1673 bogus results, with non-infinity inputs mapped to infinity too.) 1674 [Bodo Moeller] 1675 1676 Changes between 1.0.1g and 1.0.1h [5 Jun 2014] 1677 1678 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted 1679 handshake can force the use of weak keying material in OpenSSL 1680 SSL/TLS clients and servers. 1681 1682 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and 1683 researching this issue. (CVE-2014-0224) 1684 [KIKUCHI Masashi, Steve Henson] 1685 1686 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an 1687 OpenSSL DTLS client the code can be made to recurse eventually crashing 1688 in a DoS attack. 1689 1690 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue. 1691 (CVE-2014-0221) 1692 [Imre Rad, Steve Henson] 1693 1694 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can 1695 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS 1696 client or server. This is potentially exploitable to run arbitrary 1697 code on a vulnerable client or server. 1698 1699 Thanks to J��ri Aedla for reporting this issue. (CVE-2014-0195) 1700 [J��ri Aedla, Steve Henson] 1701 1702 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites 1703 are subject to a denial of service attack. 1704 1705 Thanks to Felix Gr��bert and Ivan Fratric at Google for discovering 1706 this issue. (CVE-2014-3470) 1707 [Felix Gr��bert, Ivan Fratric, Steve Henson] 1708 1709 *) Harmonize version and its documentation. -f flag is used to display 1710 compilation flags. 1711 [mancha <mancha1@zoho.com>] 1712 1713 *) Fix eckey_priv_encode so it immediately returns an error upon a failure 1714 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue. 1715 [mancha <mancha1@zoho.com>] 1716 1717 *) Fix some double frees. These are not thought to be exploitable. 1718 [mancha <mancha1@zoho.com>] 1719 1720 Changes between 1.0.1f and 1.0.1g [7 Apr 2014] 1721 1722 *) A missing bounds check in the handling of the TLS heartbeat extension 1723 can be used to reveal up to 64k of memory to a connected client or 1724 server. 1725 1726 Thanks for Neel Mehta of Google Security for discovering this bug and to 1727 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for 1728 preparing the fix (CVE-2014-0160) 1729 [Adam Langley, Bodo Moeller] 1730 1731 *) Fix for the attack described in the paper "Recovering OpenSSL 1732 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack" 1733 by Yuval Yarom and Naomi Benger. Details can be obtained from: 1734 http://eprint.iacr.org/2014/140 1735 1736 Thanks to Yuval Yarom and Naomi Benger for discovering this 1737 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076) 1738 [Yuval Yarom and Naomi Benger] 1739 1740 *) TLS pad extension: draft-agl-tls-padding-03 1741 1742 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the 1743 TLS client Hello record length value would otherwise be > 255 and 1744 less that 512 pad with a dummy extension containing zeroes so it 1745 is at least 512 bytes long. 1746 1747 [Adam Langley, Steve Henson] 1748 1749 Changes between 1.0.1e and 1.0.1f [6 Jan 2014] 1750 1751 *) Fix for TLS record tampering bug. A carefully crafted invalid 1752 handshake could crash OpenSSL with a NULL pointer exception. 1753 Thanks to Anton Johansson for reporting this issues. 1754 (CVE-2013-4353) 1755 1756 *) Keep original DTLS digest and encryption contexts in retransmission 1757 structures so we can use the previous session parameters if they need 1758 to be resent. (CVE-2013-6450) 1759 [Steve Henson] 1760 1761 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which 1762 avoids preferring ECDHE-ECDSA ciphers when the client appears to be 1763 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for 1764 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug 1765 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing 1766 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer. 1767 [Rob Stradling, Adam Langley] 1768 1769 Changes between 1.0.1d and 1.0.1e [11 Feb 2013] 1770 1771 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI 1772 supporting platforms or when small records were transferred. 1773 [Andy Polyakov, Steve Henson] 1774 1775 Changes between 1.0.1c and 1.0.1d [5 Feb 2013] 1776 1777 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time. 1778 1779 This addresses the flaw in CBC record processing discovered by 1780 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found 1781 at: http://www.isg.rhul.ac.uk/tls/ 1782 1783 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information 1784 Security Group at Royal Holloway, University of London 1785 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and 1786 Emilia K��sper for the initial patch. 1787 (CVE-2013-0169) 1788 [Emilia K��sper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson] 1789 1790 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode 1791 ciphersuites which can be exploited in a denial of service attack. 1792 Thanks go to and to Adam Langley <agl@chromium.org> for discovering 1793 and detecting this bug and to Wolfgang Ettlinger 1794 <wolfgang.ettlinger@gmail.com> for independently discovering this issue. 1795 (CVE-2012-2686) 1796 [Adam Langley] 1797 1798 *) Return an error when checking OCSP signatures when key is NULL. 1799 This fixes a DoS attack. (CVE-2013-0166) 1800 [Steve Henson] 1801 1802 *) Make openssl verify return errors. 1803 [Chris Palmer <palmer@google.com> and Ben Laurie] 1804 1805 *) Call OCSP Stapling callback after ciphersuite has been chosen, so 1806 the right response is stapled. Also change SSL_get_certificate() 1807 so it returns the certificate actually sent. 1808 See http://rt.openssl.org/Ticket/Display.html?id=2836. 1809 [Rob Stradling <rob.stradling@comodo.com>] 1810 1811 *) Fix possible deadlock when decoding public keys. 1812 [Steve Henson] 1813 1814 *) Don't use TLS 1.0 record version number in initial client hello 1815 if renegotiating. 1816 [Steve Henson] 1817 1818 Changes between 1.0.1b and 1.0.1c [10 May 2012] 1819 1820 *) Sanity check record length before skipping explicit IV in TLS 1821 1.2, 1.1 and DTLS to fix DoS attack. 1822 1823 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic 1824 fuzzing as a service testing platform. 1825 (CVE-2012-2333) 1826 [Steve Henson] 1827 1828 *) Initialise tkeylen properly when encrypting CMS messages. 1829 Thanks to Solar Designer of Openwall for reporting this issue. 1830 [Steve Henson] 1831 1832 *) In FIPS mode don't try to use composite ciphers as they are not 1833 approved. 1834 [Steve Henson] 1835 1836 Changes between 1.0.1a and 1.0.1b [26 Apr 2012] 1837 1838 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and 1839 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately 1840 mean any application compiled against OpenSSL 1.0.0 headers setting 1841 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng 1842 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to 1843 0x10000000L Any application which was previously compiled against 1844 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1 1845 will need to be recompiled as a result. Letting be results in 1846 inability to disable specifically TLS 1.1 and in client context, 1847 in unlike event, limit maximum offered version to TLS 1.0 [see below]. 1848 [Steve Henson] 1849 1850 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not 1851 disable just protocol X, but all protocols above X *if* there are 1852 protocols *below* X still enabled. In more practical terms it means 1853 that if application wants to disable TLS1.0 in favor of TLS1.1 and 1854 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass 1855 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to 1856 client side. 1857 [Andy Polyakov] 1858 1859 Changes between 1.0.1 and 1.0.1a [19 Apr 2012] 1860 1861 *) Check for potentially exploitable overflows in asn1_d2i_read_bio 1862 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer 1863 in CRYPTO_realloc_clean. 1864 1865 Thanks to Tavis Ormandy, Google Security Team, for discovering this 1866 issue and to Adam Langley <agl@chromium.org> for fixing it. 1867 (CVE-2012-2110) 1868 [Adam Langley (Google), Tavis Ormandy, Google Security Team] 1869 1870 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections. 1871 [Adam Langley] 1872 1873 *) Workarounds for some broken servers that "hang" if a client hello 1874 record length exceeds 255 bytes. 1875 1876 1. Do not use record version number > TLS 1.0 in initial client 1877 hello: some (but not all) hanging servers will now work. 1878 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate 1879 the number of ciphers sent in the client hello. This should be 1880 set to an even number, such as 50, for example by passing: 1881 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure. 1882 Most broken servers should now work. 1883 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable 1884 TLS 1.2 client support entirely. 1885 [Steve Henson] 1886 1887 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH. 1888 [Andy Polyakov] 1889 1890 Changes between 1.0.0h and 1.0.1 [14 Mar 2012] 1891 1892 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET 1893 STRING form instead of a DigestInfo. 1894 [Steve Henson] 1895 1896 *) The format used for MDC2 RSA signatures is inconsistent between EVP 1897 and the RSA_sign/RSA_verify functions. This was made more apparent when 1898 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular 1899 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect 1900 the correct format in RSA_verify so both forms transparently work. 1901 [Steve Henson] 1902 1903 *) Some servers which support TLS 1.0 can choke if we initially indicate 1904 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA 1905 encrypted premaster secret. As a workaround use the maximum pemitted 1906 client version in client hello, this should keep such servers happy 1907 and still work with previous versions of OpenSSL. 1908 [Steve Henson] 1909 1910 *) Add support for TLS/DTLS heartbeats. 1911 [Robin Seggelmann <seggelmann@fh-muenster.de>] 1912 1913 *) Add support for SCTP. 1914 [Robin Seggelmann <seggelmann@fh-muenster.de>] 1915 1916 *) Improved PRNG seeding for VOS. 1917 [Paul Green <Paul.Green@stratus.com>] 1918 1919 *) Extensive assembler packs updates, most notably: 1920 1921 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support; 1922 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES); 1923 - x86_64: bit-sliced AES implementation; 1924 - ARM: NEON support, contemporary platforms optimizations; 1925 - s390x: z196 support; 1926 - *: GHASH and GF(2^m) multiplication implementations; 1927 1928 [Andy Polyakov] 1929 1930 *) Make TLS-SRP code conformant with RFC 5054 API cleanup 1931 (removal of unnecessary code) 1932 [Peter Sylvester <peter.sylvester@edelweb.fr>] 1933 1934 *) Add TLS key material exporter from RFC 5705. 1935 [Eric Rescorla] 1936 1937 *) Add DTLS-SRTP negotiation from RFC 5764. 1938 [Eric Rescorla] 1939 1940 *) Add Next Protocol Negotiation, 1941 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be 1942 disabled with a no-npn flag to config or Configure. Code donated 1943 by Google. 1944 [Adam Langley <agl@google.com> and Ben Laurie] 1945 1946 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224, 1947 NIST-P256, NIST-P521, with constant-time single point multiplication on 1948 typical inputs. Compiler support for the nonstandard type __uint128_t is 1949 required to use this (present in gcc 4.4 and later, for 64-bit builds). 1950 Code made available under Apache License version 2.0. 1951 1952 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command 1953 line to include this in your build of OpenSSL, and run "make depend" (or 1954 "make update"). This enables the following EC_METHODs: 1955 1956 EC_GFp_nistp224_method() 1957 EC_GFp_nistp256_method() 1958 EC_GFp_nistp521_method() 1959 1960 EC_GROUP_new_by_curve_name() will automatically use these (while 1961 EC_GROUP_new_curve_GFp() currently prefers the more flexible 1962 implementations). 1963 [Emilia K��sper, Adam Langley, Bodo Moeller (Google)] 1964 1965 *) Use type ossl_ssize_t instad of ssize_t which isn't available on 1966 all platforms. Move ssize_t definition from e_os.h to the public 1967 header file e_os2.h as it now appears in public header file cms.h 1968 [Steve Henson] 1969 1970 *) New -sigopt option to the ca, req and x509 utilities. Additional 1971 signature parameters can be passed using this option and in 1972 particular PSS. 1973 [Steve Henson] 1974 1975 *) Add RSA PSS signing function. This will generate and set the 1976 appropriate AlgorithmIdentifiers for PSS based on those in the 1977 corresponding EVP_MD_CTX structure. No application support yet. 1978 [Steve Henson] 1979 1980 *) Support for companion algorithm specific ASN1 signing routines. 1981 New function ASN1_item_sign_ctx() signs a pre-initialised 1982 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on 1983 the appropriate parameters. 1984 [Steve Henson] 1985 1986 *) Add new algorithm specific ASN1 verification initialisation function 1987 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1 1988 handling will be the same no matter what EVP_PKEY_METHOD is used. 1989 Add a PSS handler to support verification of PSS signatures: checked 1990 against a number of sample certificates. 1991 [Steve Henson] 1992 1993 *) Add signature printing for PSS. Add PSS OIDs. 1994 [Steve Henson, Martin Kaiser <lists@kaiser.cx>] 1995 1996 *) Add algorithm specific signature printing. An individual ASN1 method 1997 can now print out signatures instead of the standard hex dump. 1998 1999 More complex signatures (e.g. PSS) can print out more meaningful 2000 information. Include DSA version that prints out the signature 2001 parameters r, s. 2002 [Steve Henson] 2003 2004 *) Password based recipient info support for CMS library: implementing 2005 RFC3211. 2006 [Steve Henson] 2007 2008 *) Split password based encryption into PBES2 and PBKDF2 functions. This 2009 neatly separates the code into cipher and PBE sections and is required 2010 for some algorithms that split PBES2 into separate pieces (such as 2011 password based CMS). 2012 [Steve Henson] 2013 2014 *) Session-handling fixes: 2015 - Fix handling of connections that are resuming with a session ID, 2016 but also support Session Tickets. 2017 - Fix a bug that suppressed issuing of a new ticket if the client 2018 presented a ticket with an expired session. 2019 - Try to set the ticket lifetime hint to something reasonable. 2020 - Make tickets shorter by excluding irrelevant information. 2021 - On the client side, don't ignore renewed tickets. 2022 [Adam Langley, Bodo Moeller (Google)] 2023 2024 *) Fix PSK session representation. 2025 [Bodo Moeller] 2026 2027 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations. 2028 2029 This work was sponsored by Intel. 2030 [Andy Polyakov] 2031 2032 *) Add GCM support to TLS library. Some custom code is needed to split 2033 the IV between the fixed (from PRF) and explicit (from TLS record) 2034 portions. This adds all GCM ciphersuites supported by RFC5288 and 2035 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and 2036 add a special AESGCM string for GCM only. 2037 [Steve Henson] 2038 2039 *) Expand range of ctrls for AES GCM. Permit setting invocation 2040 field on decrypt and retrieval of invocation field only on encrypt. 2041 [Steve Henson] 2042 2043 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support. 2044 As required by RFC5289 these ciphersuites cannot be used if for 2045 versions of TLS earlier than 1.2. 2046 [Steve Henson] 2047 2048 *) For FIPS capable OpenSSL interpret a NULL default public key method 2049 as unset and return the appopriate default but do *not* set the default. 2050 This means we can return the appopriate method in applications that 2051 swicth between FIPS and non-FIPS modes. 2052 [Steve Henson] 2053 2054 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an 2055 ENGINE is used then we cannot handle that in the FIPS module so we 2056 keep original code iff non-FIPS operations are allowed. 2057 [Steve Henson] 2058 2059 *) Add -attime option to openssl utilities. 2060 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson] 2061 2062 *) Redirect DSA and DH operations to FIPS module in FIPS mode. 2063 [Steve Henson] 2064 2065 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use 2066 FIPS EC methods unconditionally for now. 2067 [Steve Henson] 2068 2069 *) New build option no-ec2m to disable characteristic 2 code. 2070 [Steve Henson] 2071 2072 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not 2073 all cases can be covered as some introduce binary incompatibilities. 2074 [Steve Henson] 2075 2076 *) Redirect RSA operations to FIPS module including keygen, 2077 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods. 2078 [Steve Henson] 2079 2080 *) Add similar low level API blocking to ciphers. 2081 [Steve Henson] 2082 2083 *) Low level digest APIs are not approved in FIPS mode: any attempt 2084 to use these will cause a fatal error. Applications that *really* want 2085 to use them can use the private_* version instead. 2086 [Steve Henson] 2087 2088 *) Redirect cipher operations to FIPS module for FIPS builds. 2089 [Steve Henson] 2090 2091 *) Redirect digest operations to FIPS module for FIPS builds. 2092 [Steve Henson] 2093 2094 *) Update build system to add "fips" flag which will link in fipscanister.o 2095 for static and shared library builds embedding a signature if needed. 2096 [Steve Henson] 2097 2098 *) Output TLS supported curves in preference order instead of numerical 2099 order. This is currently hardcoded for the highest order curves first. 2100 This should be configurable so applications can judge speed vs strength. 2101 [Steve Henson] 2102 2103 *) Add TLS v1.2 server support for client authentication. 2104 [Steve Henson] 2105 2106 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers 2107 and enable MD5. 2108 [Steve Henson] 2109 2110 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying 2111 FIPS modules versions. 2112 [Steve Henson] 2113 2114 *) Add TLS v1.2 client side support for client authentication. Keep cache 2115 of handshake records longer as we don't know the hash algorithm to use 2116 until after the certificate request message is received. 2117 [Steve Henson] 2118 2119 *) Initial TLS v1.2 client support. Add a default signature algorithms 2120 extension including all the algorithms we support. Parse new signature 2121 format in client key exchange. Relax some ECC signing restrictions for 2122 TLS v1.2 as indicated in RFC5246. 2123 [Steve Henson] 2124 2125 *) Add server support for TLS v1.2 signature algorithms extension. Switch 2126 to new signature format when needed using client digest preference. 2127 All server ciphersuites should now work correctly in TLS v1.2. No client 2128 support yet and no support for client certificates. 2129 [Steve Henson] 2130 2131 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch 2132 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based 2133 ciphersuites. At present only RSA key exchange ciphersuites work with 2134 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete 2135 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods 2136 and version checking. 2137 [Steve Henson] 2138 2139 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled 2140 with this defined it will not be affected by any changes to ssl internal 2141 structures. Add several utility functions to allow openssl application 2142 to work with OPENSSL_NO_SSL_INTERN defined. 2143 [Steve Henson] 2144 2145 *) A long standing patch to add support for SRP from EdelWeb (Peter 2146 Sylvester and Christophe Renou) was integrated. 2147 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester 2148 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and 2149 Ben Laurie] 2150 2151 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id. 2152 [Steve Henson] 2153 2154 *) Permit abbreviated handshakes when renegotiating using the function 2155 SSL_renegotiate_abbreviated(). 2156 [Robin Seggelmann <seggelmann@fh-muenster.de>] 2157 2158 *) Add call to ENGINE_register_all_complete() to 2159 ENGINE_load_builtin_engines(), so some implementations get used 2160 automatically instead of needing explicit application support. 2161 [Steve Henson] 2162 2163 *) Add support for TLS key exporter as described in RFC5705. 2164 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson] 2165 2166 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only 2167 a few changes are required: 2168 2169 Add SSL_OP_NO_TLSv1_1 flag. 2170 Add TLSv1_1 methods. 2171 Update version checking logic to handle version 1.1. 2172 Add explicit IV handling (ported from DTLS code). 2173 Add command line options to s_client/s_server. 2174 [Steve Henson] 2175 2176 Changes between 1.0.0g and 1.0.0h [12 Mar 2012] 2177 2178 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness 2179 in CMS and PKCS7 code. When RSA decryption fails use a random key for 2180 content decryption and always return the same error. Note: this attack 2181 needs on average 2^20 messages so it only affects automated senders. The 2182 old behaviour can be reenabled in the CMS code by setting the 2183 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where 2184 an MMA defence is not necessary. 2185 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering 2186 this issue. (CVE-2012-0884) 2187 [Steve Henson] 2188 2189 *) Fix CVE-2011-4619: make sure we really are receiving a 2190 client hello before rejecting multiple SGC restarts. Thanks to 2191 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug. 2192 [Steve Henson] 2193 2194 Changes between 1.0.0f and 1.0.0g [18 Jan 2012] 2195 2196 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109. 2197 Thanks to Antonio Martin, Enterprise Secure Access Research and 2198 Development, Cisco Systems, Inc. for discovering this bug and 2199 preparing a fix. (CVE-2012-0050) 2200 [Antonio Martin] 2201 2202 Changes between 1.0.0e and 1.0.0f [4 Jan 2012] 2203 2204 *) Nadhem Alfardan and Kenny Paterson have discovered an extension 2205 of the Vaudenay padding oracle attack on CBC mode encryption 2206 which enables an efficient plaintext recovery attack against 2207 the OpenSSL implementation of DTLS. Their attack exploits timing 2208 differences arising during decryption processing. A research 2209 paper describing this attack can be found at: 2210 http://www.isg.rhul.ac.uk/~kp/dtls.pdf 2211 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information 2212 Security Group at Royal Holloway, University of London 2213 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann 2214 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de> 2215 for preparing the fix. (CVE-2011-4108) 2216 [Robin Seggelmann, Michael Tuexen] 2217 2218 *) Clear bytes used for block padding of SSL 3.0 records. 2219 (CVE-2011-4576) 2220 [Adam Langley (Google)] 2221 2222 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George 2223 Kadianakis <desnacked@gmail.com> for discovering this issue and 2224 Adam Langley for preparing the fix. (CVE-2011-4619) 2225 [Adam Langley (Google)] 2226 2227 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027) 2228 [Andrey Kulikov <amdeich@gmail.com>] 2229 2230 *) Prevent malformed RFC3779 data triggering an assertion failure. 2231 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw 2232 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577) 2233 [Rob Austein <sra@hactrn.net>] 2234 2235 *) Improved PRNG seeding for VOS. 2236 [Paul Green <Paul.Green@stratus.com>] 2237 2238 *) Fix ssl_ciph.c set-up race. 2239 [Adam Langley (Google)] 2240 2241 *) Fix spurious failures in ecdsatest.c. 2242 [Emilia K��sper (Google)] 2243 2244 *) Fix the BIO_f_buffer() implementation (which was mixing different 2245 interpretations of the '..._len' fields). 2246 [Adam Langley (Google)] 2247 2248 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than 2249 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent 2250 threads won't reuse the same blinding coefficients. 2251 2252 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING 2253 lock to call BN_BLINDING_invert_ex, and avoids one use of 2254 BN_BLINDING_update for each BN_BLINDING structure (previously, 2255 the last update always remained unused). 2256 [Emilia K��sper (Google)] 2257 2258 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf. 2259 [Bob Buckholz (Google)] 2260 2261 Changes between 1.0.0d and 1.0.0e [6 Sep 2011] 2262 2263 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted 2264 by initialising X509_STORE_CTX properly. (CVE-2011-3207) 2265 [Kaspar Brand <ossl@velox.ch>] 2266 2267 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular 2268 for multi-threaded use of ECDH. (CVE-2011-3210) 2269 [Adam Langley (Google)] 2270 2271 *) Fix x509_name_ex_d2i memory leak on bad inputs. 2272 [Bodo Moeller] 2273 2274 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check 2275 signature public key algorithm by using OID xref utilities instead. 2276 Before this you could only use some ECC ciphersuites with SHA1 only. 2277 [Steve Henson] 2278 2279 *) Add protection against ECDSA timing attacks as mentioned in the paper 2280 by Billy Bob Brumley and Nicola Tuveri, see: 2281 2282 http://eprint.iacr.org/2011/232.pdf 2283 2284 [Billy Bob Brumley and Nicola Tuveri] 2285 2286 Changes between 1.0.0c and 1.0.0d [8 Feb 2011] 2287 2288 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014 2289 [Neel Mehta, Adam Langley, Bodo Moeller (Google)] 2290 2291 *) Fix bug in string printing code: if *any* escaping is enabled we must 2292 escape the escape character (backslash) or the resulting string is 2293 ambiguous. 2294 [Steve Henson] 2295 2296 Changes between 1.0.0b and 1.0.0c [2 Dec 2010] 2297 2298 *) Disable code workaround for ancient and obsolete Netscape browsers 2299 and servers: an attacker can use it in a ciphersuite downgrade attack. 2300 Thanks to Martin Rex for discovering this bug. CVE-2010-4180 2301 [Steve Henson] 2302 2303 *) Fixed J-PAKE implementation error, originally discovered by 2304 Sebastien Martini, further info and confirmation from Stefan 2305 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252 2306 [Ben Laurie] 2307 2308 Changes between 1.0.0a and 1.0.0b [16 Nov 2010] 2309 2310 *) Fix extension code to avoid race conditions which can result in a buffer 2311 overrun vulnerability: resumed sessions must not be modified as they can 2312 be shared by multiple threads. CVE-2010-3864 2313 [Steve Henson] 2314 2315 *) Fix WIN32 build system to correctly link an ENGINE directory into 2316 a DLL. 2317 [Steve Henson] 2318 2319 Changes between 1.0.0 and 1.0.0a [01 Jun 2010] 2320 2321 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover 2322 (CVE-2010-1633) 2323 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>] 2324 2325 Changes between 0.9.8n and 1.0.0 [29 Mar 2010] 2326 2327 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher 2328 context. The operation can be customised via the ctrl mechanism in 2329 case ENGINEs want to include additional functionality. 2330 [Steve Henson] 2331 2332 *) Tolerate yet another broken PKCS#8 key format: private key value negative. 2333 [Steve Henson] 2334 2335 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to 2336 output hashes compatible with older versions of OpenSSL. 2337 [Willy Weisz <weisz@vcpc.univie.ac.at>] 2338 2339 *) Fix compression algorithm handling: if resuming a session use the 2340 compression algorithm of the resumed session instead of determining 2341 it from client hello again. Don't allow server to change algorithm. 2342 [Steve Henson] 2343 2344 *) Add load_crls() function to apps tidying load_certs() too. Add option 2345 to verify utility to allow additional CRLs to be included. 2346 [Steve Henson] 2347 2348 *) Update OCSP request code to permit adding custom headers to the request: 2349 some responders need this. 2350 [Steve Henson] 2351 2352 *) The function EVP_PKEY_sign() returns <=0 on error: check return code 2353 correctly. 2354 [Julia Lawall <julia@diku.dk>] 2355 2356 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it 2357 needlessly dereferenced structures, used obsolete functions and 2358 didn't handle all updated verify codes correctly. 2359 [Steve Henson] 2360 2361 *) Disable MD2 in the default configuration. 2362 [Steve Henson] 2363 2364 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to 2365 indicate the initial BIO being pushed or popped. This makes it possible 2366 to determine whether the BIO is the one explicitly called or as a result 2367 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so 2368 it handles reference counts correctly and doesn't zero out the I/O bio 2369 when it is not being explicitly popped. WARNING: applications which 2370 included workarounds for the old buggy behaviour will need to be modified 2371 or they could free up already freed BIOs. 2372 [Steve Henson] 2373 2374 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni 2375 renaming to all platforms (within the 0.9.8 branch, this was 2376 done conditionally on Netware platforms to avoid a name clash). 2377 [Guenter <lists@gknw.net>] 2378 2379 *) Add ECDHE and PSK support to DTLS. 2380 [Michael Tuexen <tuexen@fh-muenster.de>] 2381 2382 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't 2383 be used on C++. 2384 [Steve Henson] 2385 2386 *) Add "missing" function EVP_MD_flags() (without this the only way to 2387 retrieve a digest flags is by accessing the structure directly. Update 2388 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest 2389 or cipher is registered as in the "from" argument. Print out all 2390 registered digests in the dgst usage message instead of manually 2391 attempting to work them out. 2392 [Steve Henson] 2393 2394 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello: 2395 this allows the use of compression and extensions. Change default cipher 2396 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2 2397 by default unless an application cipher string requests it. 2398 [Steve Henson] 2399 2400 *) Alter match criteria in PKCS12_parse(). It used to try to use local 2401 key ids to find matching certificates and keys but some PKCS#12 files 2402 don't follow the (somewhat unwritten) rules and this strategy fails. 2403 Now just gather all certificates together and the first private key 2404 then look for the first certificate that matches the key. 2405 [Steve Henson] 2406 2407 *) Support use of registered digest and cipher names for dgst and cipher 2408 commands instead of having to add each one as a special case. So now 2409 you can do: 2410 2411 openssl sha256 foo 2412 2413 as well as: 2414 2415 openssl dgst -sha256 foo 2416 2417 and this works for ENGINE based algorithms too. 2418 2419 [Steve Henson] 2420 2421 *) Update Gost ENGINE to support parameter files. 2422 [Victor B. Wagner <vitus@cryptocom.ru>] 2423 2424 *) Support GeneralizedTime in ca utility. 2425 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson] 2426 2427 *) Enhance the hash format used for certificate directory links. The new 2428 form uses the canonical encoding (meaning equivalent names will work 2429 even if they aren't identical) and uses SHA1 instead of MD5. This form 2430 is incompatible with the older format and as a result c_rehash should 2431 be used to rebuild symbolic links. 2432 [Steve Henson] 2433 2434 *) Make PKCS#8 the default write format for private keys, replacing the 2435 traditional format. This form is standardised, more secure and doesn't 2436 include an implicit MD5 dependency. 2437 [Steve Henson] 2438 2439 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code 2440 committed to OpenSSL should pass this lot as a minimum. 2441 [Steve Henson] 2442 2443 *) Add session ticket override functionality for use by EAP-FAST. 2444 [Jouni Malinen <j@w1.fi>] 2445 2446 *) Modify HMAC functions to return a value. Since these can be implemented 2447 in an ENGINE errors can occur. 2448 [Steve Henson] 2449 2450 *) Type-checked OBJ_bsearch_ex. 2451 [Ben Laurie] 2452 2453 *) Type-checked OBJ_bsearch. Also some constification necessitated 2454 by type-checking. Still to come: TXT_DB, bsearch(?), 2455 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING, 2456 CONF_VALUE. 2457 [Ben Laurie] 2458 2459 *) New function OPENSSL_gmtime_adj() to add a specific number of days and 2460 seconds to a tm structure directly, instead of going through OS 2461 specific date routines. This avoids any issues with OS routines such 2462 as the year 2038 bug. New *_adj() functions for ASN1 time structures 2463 and X509_time_adj_ex() to cover the extended range. The existing 2464 X509_time_adj() is still usable and will no longer have any date issues. 2465 [Steve Henson] 2466 2467 *) Delta CRL support. New use deltas option which will attempt to locate 2468 and search any appropriate delta CRLs available. 2469 2470 This work was sponsored by Google. 2471 [Steve Henson] 2472 2473 *) Support for CRLs partitioned by reason code. Reorganise CRL processing 2474 code and add additional score elements. Validate alternate CRL paths 2475 as part of the CRL checking and indicate a new error "CRL path validation 2476 error" in this case. Applications wanting additional details can use 2477 the verify callback and check the new "parent" field. If this is not 2478 NULL CRL path validation is taking place. Existing applications wont 2479 see this because it requires extended CRL support which is off by 2480 default. 2481 2482 This work was sponsored by Google. 2483 [Steve Henson] 2484 2485 *) Support for freshest CRL extension. 2486 2487 This work was sponsored by Google. 2488 [Steve Henson] 2489 2490 *) Initial indirect CRL support. Currently only supported in the CRLs 2491 passed directly and not via lookup. Process certificate issuer 2492 CRL entry extension and lookup CRL entries by bother issuer name 2493 and serial number. Check and process CRL issuer entry in IDP extension. 2494 2495 This work was sponsored by Google. 2496 [Steve Henson] 2497 2498 *) Add support for distinct certificate and CRL paths. The CRL issuer 2499 certificate is validated separately in this case. Only enabled if 2500 an extended CRL support flag is set: this flag will enable additional 2501 CRL functionality in future. 2502 2503 This work was sponsored by Google. 2504 [Steve Henson] 2505 2506 *) Add support for policy mappings extension. 2507 2508 This work was sponsored by Google. 2509 [Steve Henson] 2510 2511 *) Fixes to pathlength constraint, self issued certificate handling, 2512 policy processing to align with RFC3280 and PKITS tests. 2513 2514 This work was sponsored by Google. 2515 [Steve Henson] 2516 2517 *) Support for name constraints certificate extension. DN, email, DNS 2518 and URI types are currently supported. 2519 2520 This work was sponsored by Google. 2521 [Steve Henson] 2522 2523 *) To cater for systems that provide a pointer-based thread ID rather 2524 than numeric, deprecate the current numeric thread ID mechanism and 2525 replace it with a structure and associated callback type. This 2526 mechanism allows a numeric "hash" to be extracted from a thread ID in 2527 either case, and on platforms where pointers are larger than 'long', 2528 mixing is done to help ensure the numeric 'hash' is usable even if it 2529 can't be guaranteed unique. The default mechanism is to use "&errno" 2530 as a pointer-based thread ID to distinguish between threads. 2531 2532 Applications that want to provide their own thread IDs should now use 2533 CRYPTO_THREADID_set_callback() to register a callback that will call 2534 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer(). 2535 2536 Note that ERR_remove_state() is now deprecated, because it is tied 2537 to the assumption that thread IDs are numeric. ERR_remove_state(0) 2538 to free the current thread's error state should be replaced by 2539 ERR_remove_thread_state(NULL). 2540 2541 (This new approach replaces the functions CRYPTO_set_idptr_callback(), 2542 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in 2543 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an 2544 application was previously providing a numeric thread callback that 2545 was inappropriate for distinguishing threads, then uniqueness might 2546 have been obtained with &errno that happened immediately in the 2547 intermediate development versions of OpenSSL; this is no longer the 2548 case, the numeric thread callback will now override the automatic use 2549 of &errno.) 2550 [Geoff Thorpe, with help from Bodo Moeller] 2551 2552 *) Initial support for different CRL issuing certificates. This covers a 2553 simple case where the self issued certificates in the chain exist and 2554 the real CRL issuer is higher in the existing chain. 2555 2556 This work was sponsored by Google. 2557 [Steve Henson] 2558 2559 *) Removed effectively defunct crypto/store from the build. 2560 [Ben Laurie] 2561 2562 *) Revamp of STACK to provide stronger type-checking. Still to come: 2563 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE, 2564 ASN1_STRING, CONF_VALUE. 2565 [Ben Laurie] 2566 2567 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer 2568 RAM on SSL connections. This option can save about 34k per idle SSL. 2569 [Nick Mathewson] 2570 2571 *) Revamp of LHASH to provide stronger type-checking. Still to come: 2572 STACK, TXT_DB, bsearch, qsort. 2573 [Ben Laurie] 2574 2575 *) Initial support for Cryptographic Message Syntax (aka CMS) based 2576 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility, 2577 support for data, signedData, compressedData, digestedData and 2578 encryptedData, envelopedData types included. Scripts to check against 2579 RFC4134 examples draft and interop and consistency checks of many 2580 content types and variants. 2581 [Steve Henson] 2582 2583 *) Add options to enc utility to support use of zlib compression BIO. 2584 [Steve Henson] 2585 2586 *) Extend mk1mf to support importing of options and assembly language 2587 files from Configure script, currently only included in VC-WIN32. 2588 The assembly language rules can now optionally generate the source 2589 files from the associated perl scripts. 2590 [Steve Henson] 2591 2592 *) Implement remaining functionality needed to support GOST ciphersuites. 2593 Interop testing has been performed using CryptoPro implementations. 2594 [Victor B. Wagner <vitus@cryptocom.ru>] 2595 2596 *) s390x assembler pack. 2597 [Andy Polyakov] 2598 2599 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU 2600 "family." 2601 [Andy Polyakov] 2602 2603 *) Implement Opaque PRF Input TLS extension as specified in 2604 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an 2605 official specification yet and no extension type assignment by 2606 IANA exists, this extension (for now) will have to be explicitly 2607 enabled when building OpenSSL by providing the extension number 2608 to use. For example, specify an option 2609 2610 -DTLSEXT_TYPE_opaque_prf_input=0x9527 2611 2612 to the "config" or "Configure" script to enable the extension, 2613 assuming extension number 0x9527 (which is a completely arbitrary 2614 and unofficial assignment based on the MD5 hash of the Internet 2615 Draft). Note that by doing so, you potentially lose 2616 interoperability with other TLS implementations since these might 2617 be using the same extension number for other purposes. 2618 2619 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the 2620 opaque PRF input value to use in the handshake. This will create 2621 an interal copy of the length-'len' string at 'src', and will 2622 return non-zero for success. 2623 2624 To get more control and flexibility, provide a callback function 2625 by using 2626 2627 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb) 2628 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg) 2629 2630 where 2631 2632 int (*cb)(SSL *, void *peerinput, size_t len, void *arg); 2633 void *arg; 2634 2635 Callback function 'cb' will be called in handshakes, and is 2636 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate. 2637 Argument 'arg' is for application purposes (the value as given to 2638 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly 2639 be provided to the callback function). The callback function 2640 has to return non-zero to report success: usually 1 to use opaque 2641 PRF input just if possible, or 2 to enforce use of the opaque PRF 2642 input. In the latter case, the library will abort the handshake 2643 if opaque PRF input is not successfully negotiated. 2644 2645 Arguments 'peerinput' and 'len' given to the callback function 2646 will always be NULL and 0 in the case of a client. A server will 2647 see the client's opaque PRF input through these variables if 2648 available (NULL and 0 otherwise). Note that if the server 2649 provides an opaque PRF input, the length must be the same as the 2650 length of the client's opaque PRF input. 2651 2652 Note that the callback function will only be called when creating 2653 a new session (session resumption can resume whatever was 2654 previously negotiated), and will not be called in SSL 2.0 2655 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or 2656 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended 2657 for applications that need to enforce opaque PRF input. 2658 2659 [Bodo Moeller] 2660 2661 *) Update ssl code to support digests other than SHA1+MD5 for handshake 2662 MAC. 2663 2664 [Victor B. Wagner <vitus@cryptocom.ru>] 2665 2666 *) Add RFC4507 support to OpenSSL. This includes the corrections in 2667 RFC4507bis. The encrypted ticket format is an encrypted encoded 2668 SSL_SESSION structure, that way new session features are automatically 2669 supported. 2670 2671 If a client application caches session in an SSL_SESSION structure 2672 support is transparent because tickets are now stored in the encoded 2673 SSL_SESSION. 2674 2675 The SSL_CTX structure automatically generates keys for ticket 2676 protection in servers so again support should be possible 2677 with no application modification. 2678 2679 If a client or server wishes to disable RFC4507 support then the option 2680 SSL_OP_NO_TICKET can be set. 2681 2682 Add a TLS extension debugging callback to allow the contents of any client 2683 or server extensions to be examined. 2684 2685 This work was sponsored by Google. 2686 [Steve Henson] 2687 2688 *) Final changes to avoid use of pointer pointer casts in OpenSSL. 2689 OpenSSL should now compile cleanly on gcc 4.2 2690 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson] 2691 2692 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC 2693 support including streaming MAC support: this is required for GOST 2694 ciphersuite support. 2695 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson] 2696 2697 *) Add option -stream to use PKCS#7 streaming in smime utility. New 2698 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream() 2699 to output in BER and PEM format. 2700 [Steve Henson] 2701 2702 *) Experimental support for use of HMAC via EVP_PKEY interface. This 2703 allows HMAC to be handled via the EVP_DigestSign*() interface. The 2704 EVP_PKEY "key" in this case is the HMAC key, potentially allowing 2705 ENGINE support for HMAC keys which are unextractable. New -mac and 2706 -macopt options to dgst utility. 2707 [Steve Henson] 2708 2709 *) New option -sigopt to dgst utility. Update dgst to use 2710 EVP_Digest{Sign,Verify}*. These two changes make it possible to use 2711 alternative signing paramaters such as X9.31 or PSS in the dgst 2712 utility. 2713 [Steve Henson] 2714 2715 *) Change ssl_cipher_apply_rule(), the internal function that does 2716 the work each time a ciphersuite string requests enabling 2717 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or 2718 removing ("!foo+bar") a class of ciphersuites: Now it maintains 2719 the order of disabled ciphersuites such that those ciphersuites 2720 that most recently went from enabled to disabled not only stay 2721 in order with respect to each other, but also have higher priority 2722 than other disabled ciphersuites the next time ciphersuites are 2723 enabled again. 2724 2725 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable 2726 the same ciphersuites as with "HIGH" alone, but in a specific 2727 order where the PSK ciphersuites come first (since they are the 2728 most recently disabled ciphersuites when "HIGH" is parsed). 2729 2730 Also, change ssl_create_cipher_list() (using this new 2731 funcionality) such that between otherwise identical 2732 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in 2733 the default order. 2734 [Bodo Moeller] 2735 2736 *) Change ssl_create_cipher_list() so that it automatically 2737 arranges the ciphersuites in reasonable order before starting 2738 to process the rule string. Thus, the definition for "DEFAULT" 2739 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but 2740 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH". 2741 This makes it much easier to arrive at a reasonable default order 2742 in applications for which anonymous ciphers are OK (meaning 2743 that you can't actually use DEFAULT). 2744 [Bodo Moeller; suggested by Victor Duchovni] 2745 2746 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string 2747 processing) into multiple integers instead of setting 2748 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK", 2749 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer. 2750 (These masks as well as the individual bit definitions are hidden 2751 away into the non-exported interface ssl/ssl_locl.h, so this 2752 change to the definition of the SSL_CIPHER structure shouldn't 2753 affect applications.) This give us more bits for each of these 2754 categories, so there is no longer a need to coagulate AES128 and 2755 AES256 into a single algorithm bit, and to coagulate Camellia128 2756 and Camellia256 into a single algorithm bit, which has led to all 2757 kinds of kludges. 2758 2759 Thus, among other things, the kludge introduced in 0.9.7m and 2760 0.9.8e for masking out AES256 independently of AES128 or masking 2761 out Camellia256 independently of AES256 is not needed here in 0.9.9. 2762 2763 With the change, we also introduce new ciphersuite aliases that 2764 so far were missing: "AES128", "AES256", "CAMELLIA128", and 2765 "CAMELLIA256". 2766 [Bodo Moeller] 2767 2768 *) Add support for dsa-with-SHA224 and dsa-with-SHA256. 2769 Use the leftmost N bytes of the signature input if the input is 2770 larger than the prime q (with N being the size in bytes of q). 2771 [Nils Larsch] 2772 2773 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses 2774 it yet and it is largely untested. 2775 [Steve Henson] 2776 2777 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types. 2778 [Nils Larsch] 2779 2780 *) Initial incomplete changes to avoid need for function casts in OpenSSL 2781 some compilers (gcc 4.2 and later) reject their use. Safestack is 2782 reimplemented. Update ASN1 to avoid use of legacy functions. 2783 [Steve Henson] 2784 2785 *) Win32/64 targets are linked with Winsock2. 2786 [Andy Polyakov] 2787 2788 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected 2789 to external functions. This can be used to increase CRL handling 2790 efficiency especially when CRLs are very large by (for example) storing 2791 the CRL revoked certificates in a database. 2792 [Steve Henson] 2793 2794 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so 2795 new CRLs added to a directory can be used. New command line option 2796 -verify_return_error to s_client and s_server. This causes real errors 2797 to be returned by the verify callback instead of carrying on no matter 2798 what. This reflects the way a "real world" verify callback would behave. 2799 [Steve Henson] 2800 2801 *) GOST engine, supporting several GOST algorithms and public key formats. 2802 Kindly donated by Cryptocom. 2803 [Cryptocom] 2804 2805 *) Partial support for Issuing Distribution Point CRL extension. CRLs 2806 partitioned by DP are handled but no indirect CRL or reason partitioning 2807 (yet). Complete overhaul of CRL handling: now the most suitable CRL is 2808 selected via a scoring technique which handles IDP and AKID in CRLs. 2809 [Steve Henson] 2810 2811 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which 2812 will ultimately be used for all verify operations: this will remove the 2813 X509_STORE dependency on certificate verification and allow alternative 2814 lookup methods. X509_STORE based implementations of these two callbacks. 2815 [Steve Henson] 2816 2817 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names. 2818 Modify get_crl() to find a valid (unexpired) CRL if possible. 2819 [Steve Henson] 2820 2821 *) New function X509_CRL_match() to check if two CRLs are identical. Normally 2822 this would be called X509_CRL_cmp() but that name is already used by 2823 a function that just compares CRL issuer names. Cache several CRL 2824 extensions in X509_CRL structure and cache CRLDP in X509. 2825 [Steve Henson] 2826 2827 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name) 2828 this maps equivalent X509_NAME structures into a consistent structure. 2829 Name comparison can then be performed rapidly using memcmp(). 2830 [Steve Henson] 2831 2832 *) Non-blocking OCSP request processing. Add -timeout option to ocsp 2833 utility. 2834 [Steve Henson] 2835 2836 *) Allow digests to supply their own micalg string for S/MIME type using 2837 the ctrl EVP_MD_CTRL_MICALG. 2838 [Steve Henson] 2839 2840 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the 2841 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN 2842 ctrl. It can then customise the structure before and/or after signing 2843 if necessary. 2844 [Steve Henson] 2845 2846 *) New function OBJ_add_sigid() to allow application defined signature OIDs 2847 to be added to OpenSSLs internal tables. New function OBJ_sigid_free() 2848 to free up any added signature OIDs. 2849 [Steve Henson] 2850 2851 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(), 2852 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal 2853 digest and cipher tables. New options added to openssl utility: 2854 list-message-digest-algorithms and list-cipher-algorithms. 2855 [Steve Henson] 2856 2857 *) Change the array representation of binary polynomials: the list 2858 of degrees of non-zero coefficients is now terminated with -1. 2859 Previously it was terminated with 0, which was also part of the 2860 value; thus, the array representation was not applicable to 2861 polynomials where t^0 has coefficient zero. This change makes 2862 the array representation useful in a more general context. 2863 [Douglas Stebila] 2864 2865 *) Various modifications and fixes to SSL/TLS cipher string 2866 handling. For ECC, the code now distinguishes between fixed ECDH 2867 with RSA certificates on the one hand and with ECDSA certificates 2868 on the other hand, since these are separate ciphersuites. The 2869 unused code for Fortezza ciphersuites has been removed. 2870 2871 For consistency with EDH, ephemeral ECDH is now called "EECDH" 2872 (not "ECDHE"). For consistency with the code for DH 2873 certificates, use of ECDH certificates is now considered ECDH 2874 authentication, not RSA or ECDSA authentication (the latter is 2875 merely the CA's signing algorithm and not actively used in the 2876 protocol). 2877 2878 The temporary ciphersuite alias "ECCdraft" is no longer 2879 available, and ECC ciphersuites are no longer excluded from "ALL" 2880 and "DEFAULT". The following aliases now exist for RFC 4492 2881 ciphersuites, most of these by analogy with the DH case: 2882 2883 kECDHr - ECDH cert, signed with RSA 2884 kECDHe - ECDH cert, signed with ECDSA 2885 kECDH - ECDH cert (signed with either RSA or ECDSA) 2886 kEECDH - ephemeral ECDH 2887 ECDH - ECDH cert or ephemeral ECDH 2888 2889 aECDH - ECDH cert 2890 aECDSA - ECDSA cert 2891 ECDSA - ECDSA cert 2892 2893 AECDH - anonymous ECDH 2894 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH") 2895 2896 [Bodo Moeller] 2897 2898 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported. 2899 Use correct micalg parameters depending on digest(s) in signed message. 2900 [Steve Henson] 2901 2902 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process 2903 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code. 2904 [Steve Henson] 2905 2906 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit 2907 an engine to register a method. Add ENGINE lookups for methods and 2908 functional reference processing. 2909 [Steve Henson] 2910 2911 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of 2912 EVP_{Sign,Verify}* which allow an application to customise the signature 2913 process. 2914 [Steve Henson] 2915 2916 *) New -resign option to smime utility. This adds one or more signers 2917 to an existing PKCS#7 signedData structure. Also -md option to use an 2918 alternative message digest algorithm for signing. 2919 [Steve Henson] 2920 2921 *) Tidy up PKCS#7 routines and add new functions to make it easier to 2922 create PKCS7 structures containing multiple signers. Update smime 2923 application to support multiple signers. 2924 [Steve Henson] 2925 2926 *) New -macalg option to pkcs12 utility to allow setting of an alternative 2927 digest MAC. 2928 [Steve Henson] 2929 2930 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC. 2931 Reorganize PBE internals to lookup from a static table using NIDs, 2932 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl: 2933 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative 2934 PRF which will be automatically used with PBES2. 2935 [Steve Henson] 2936 2937 *) Replace the algorithm specific calls to generate keys in "req" with the 2938 new API. 2939 [Steve Henson] 2940 2941 *) Update PKCS#7 enveloped data routines to use new API. This is now 2942 supported by any public key method supporting the encrypt operation. A 2943 ctrl is added to allow the public key algorithm to examine or modify 2944 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is 2945 a no op. 2946 [Steve Henson] 2947 2948 *) Add a ctrl to asn1 method to allow a public key algorithm to express 2949 a default digest type to use. In most cases this will be SHA1 but some 2950 algorithms (such as GOST) need to specify an alternative digest. The 2951 return value indicates how strong the prefernce is 1 means optional and 2952 2 is mandatory (that is it is the only supported type). Modify 2953 ASN1_item_sign() to accept a NULL digest argument to indicate it should 2954 use the default md. Update openssl utilities to use the default digest 2955 type for signing if it is not explicitly indicated. 2956 [Steve Henson] 2957 2958 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New 2959 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant 2960 signing method from the key type. This effectively removes the link 2961 between digests and public key types. 2962 [Steve Henson] 2963 2964 *) Add an OID cross reference table and utility functions. Its purpose is to 2965 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1, 2966 rsaEncryption. This will allow some of the algorithm specific hackery 2967 needed to use the correct OID to be removed. 2968 [Steve Henson] 2969 2970 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO 2971 structures for PKCS7_sign(). They are now set up by the relevant public 2972 key ASN1 method. 2973 [Steve Henson] 2974 2975 *) Add provisional EC pkey method with support for ECDSA and ECDH. 2976 [Steve Henson] 2977 2978 *) Add support for key derivation (agreement) in the API, DH method and 2979 pkeyutl. 2980 [Steve Henson] 2981 2982 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support 2983 public and private key formats. As a side effect these add additional 2984 command line functionality not previously available: DSA signatures can be 2985 generated and verified using pkeyutl and DH key support and generation in 2986 pkey, genpkey. 2987 [Steve Henson] 2988 2989 *) BeOS support. 2990 [Oliver Tappe <zooey@hirschkaefer.de>] 2991 2992 *) New make target "install_html_docs" installs HTML renditions of the 2993 manual pages. 2994 [Oliver Tappe <zooey@hirschkaefer.de>] 2995 2996 *) New utility "genpkey" this is analagous to "genrsa" etc except it can 2997 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to 2998 support key and parameter generation and add initial key generation 2999 functionality for RSA. 3000 [Steve Henson] 3001 3002 *) Add functions for main EVP_PKEY_method operations. The undocumented 3003 functions EVP_PKEY_{encrypt,decrypt} have been renamed to 3004 EVP_PKEY_{encrypt,decrypt}_old. 3005 [Steve Henson] 3006 3007 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public 3008 key API, doesn't do much yet. 3009 [Steve Henson] 3010 3011 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about 3012 public key algorithms. New option to openssl utility: 3013 "list-public-key-algorithms" to print out info. 3014 [Steve Henson] 3015 3016 *) Implement the Supported Elliptic Curves Extension for 3017 ECC ciphersuites from draft-ietf-tls-ecc-12.txt. 3018 [Douglas Stebila] 3019 3020 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or 3021 EVP_CIPHER structures to avoid later problems in EVP_cleanup(). 3022 [Steve Henson] 3023 3024 *) New utilities pkey and pkeyparam. These are similar to algorithm specific 3025 utilities such as rsa, dsa, dsaparam etc except they process any key 3026 type. 3027 [Steve Henson] 3028 3029 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New 3030 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(), 3031 EVP_PKEY_print_param() to print public key data from an EVP_PKEY 3032 structure. 3033 [Steve Henson] 3034 3035 *) Initial support for pluggable public key ASN1. 3036 De-spaghettify the public key ASN1 handling. Move public and private 3037 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate 3038 algorithm specific handling to a single module within the relevant 3039 algorithm directory. Add functions to allow (near) opaque processing 3040 of public and private key structures. 3041 [Steve Henson] 3042 3043 *) Implement the Supported Point Formats Extension for 3044 ECC ciphersuites from draft-ietf-tls-ecc-12.txt. 3045 [Douglas Stebila] 3046 3047 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members 3048 for the psk identity [hint] and the psk callback functions to the 3049 SSL_SESSION, SSL and SSL_CTX structure. 3050 3051 New ciphersuites: 3052 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA, 3053 PSK-AES256-CBC-SHA 3054 3055 New functions: 3056 SSL_CTX_use_psk_identity_hint 3057 SSL_get_psk_identity_hint 3058 SSL_get_psk_identity 3059 SSL_use_psk_identity_hint 3060 3061 [Mika Kousa and Pasi Eronen of Nokia Corporation] 3062 3063 *) Add RFC 3161 compliant time stamp request creation, response generation 3064 and response verification functionality. 3065 [Zolt��n Gl��zik <zglozik@opentsa.org>, The OpenTSA Project] 3066 3067 *) Add initial support for TLS extensions, specifically for the server_name 3068 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now 3069 have new members for a host name. The SSL data structure has an 3070 additional member SSL_CTX *initial_ctx so that new sessions can be 3071 stored in that context to allow for session resumption, even after the 3072 SSL has been switched to a new SSL_CTX in reaction to a client's 3073 server_name extension. 3074 3075 New functions (subject to change): 3076 3077 SSL_get_servername() 3078 SSL_get_servername_type() 3079 SSL_set_SSL_CTX() 3080 3081 New CTRL codes and macros (subject to change): 3082 3083 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 3084 - SSL_CTX_set_tlsext_servername_callback() 3085 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 3086 - SSL_CTX_set_tlsext_servername_arg() 3087 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() 3088 3089 openssl s_client has a new '-servername ...' option. 3090 3091 openssl s_server has new options '-servername_host ...', '-cert2 ...', 3092 '-key2 ...', '-servername_fatal' (subject to change). This allows 3093 testing the HostName extension for a specific single host name ('-cert' 3094 and '-key' remain fallbacks for handshakes without HostName 3095 negotiation). If the unrecogninzed_name alert has to be sent, this by 3096 default is a warning; it becomes fatal with the '-servername_fatal' 3097 option. 3098 3099 [Peter Sylvester, Remy Allais, Christophe Renou] 3100 3101 *) Whirlpool hash implementation is added. 3102 [Andy Polyakov] 3103 3104 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to 3105 bn(64,32). Because of instruction set limitations it doesn't have 3106 any negative impact on performance. This was done mostly in order 3107 to make it possible to share assembler modules, such as bn_mul_mont 3108 implementations, between 32- and 64-bit builds without hassle. 3109 [Andy Polyakov] 3110 3111 *) Move code previously exiled into file crypto/ec/ec2_smpt.c 3112 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP 3113 macro. 3114 [Bodo Moeller] 3115 3116 *) New candidate for BIGNUM assembler implementation, bn_mul_mont, 3117 dedicated Montgomery multiplication procedure, is introduced. 3118 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher 3119 "64-bit" performance on certain 32-bit targets. 3120 [Andy Polyakov] 3121 3122 *) New option SSL_OP_NO_COMP to disable use of compression selectively 3123 in SSL structures. New SSL ctrl to set maximum send fragment size. 3124 Save memory by seeting the I/O buffer sizes dynamically instead of 3125 using the maximum available value. 3126 [Steve Henson] 3127 3128 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code 3129 in addition to the text details. 3130 [Bodo Moeller] 3131 3132 *) Very, very preliminary EXPERIMENTAL support for printing of general 3133 ASN1 structures. This currently produces rather ugly output and doesn't 3134 handle several customised structures at all. 3135 [Steve Henson] 3136 3137 *) Integrated support for PVK file format and some related formats such 3138 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support 3139 these in the 'rsa' and 'dsa' utilities. 3140 [Steve Henson] 3141 3142 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line. 3143 [Steve Henson] 3144 3145 *) Remove the ancient ASN1_METHOD code. This was only ever used in one 3146 place for the (very old) "NETSCAPE" format certificates which are now 3147 handled using new ASN1 code equivalents. 3148 [Steve Henson] 3149 3150 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD 3151 pointer and make the SSL_METHOD parameter in SSL_CTX_new, 3152 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'. 3153 [Nils Larsch] 3154 3155 *) Modify CRL distribution points extension code to print out previously 3156 unsupported fields. Enhance extension setting code to allow setting of 3157 all fields. 3158 [Steve Henson] 3159 3160 *) Add print and set support for Issuing Distribution Point CRL extension. 3161 [Steve Henson] 3162 3163 *) Change 'Configure' script to enable Camellia by default. 3164 [NTT] 3165 3166 Changes between 0.9.8m and 0.9.8n [24 Mar 2010] 3167 3168 *) When rejecting SSL/TLS records due to an incorrect version number, never 3169 update s->server with a new major version number. As of 3170 - OpenSSL 0.9.8m if 'short' is a 16-bit type, 3171 - OpenSSL 0.9.8f if 'short' is longer than 16 bits, 3172 the previous behavior could result in a read attempt at NULL when 3173 receiving specific incorrect SSL/TLS records once record payload 3174 protection is active. (CVE-2010-0740) 3175 [Bodo Moeller, Adam Langley <agl@chromium.org>] 3176 3177 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL 3178 could be crashed if the relevant tables were not present (e.g. chrooted). 3179 [Tomas Hoger <thoger@redhat.com>] 3180 3181 Changes between 0.9.8l and 0.9.8m [25 Feb 2010] 3182 3183 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245) 3184 [Martin Olsson, Neel Mehta] 3185 3186 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to 3187 accommodate for stack sorting, always a write lock!). 3188 [Bodo Moeller] 3189 3190 *) On some versions of WIN32 Heap32Next is very slow. This can cause 3191 excessive delays in the RAND_poll(): over a minute. As a workaround 3192 include a time check in the inner Heap32Next loop too. 3193 [Steve Henson] 3194 3195 *) The code that handled flushing of data in SSL/TLS originally used the 3196 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused 3197 the problem outlined in PR#1949. The fix suggested there however can 3198 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions 3199 of Apache). So instead simplify the code to flush unconditionally. 3200 This should be fine since flushing with no data to flush is a no op. 3201 [Steve Henson] 3202 3203 *) Handle TLS versions 2.0 and later properly and correctly use the 3204 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way 3205 off ancient servers have a habit of sticking around for a while... 3206 [Steve Henson] 3207 3208 *) Modify compression code so it frees up structures without using the 3209 ex_data callbacks. This works around a problem where some applications 3210 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when 3211 restarting) then use compression (e.g. SSL with compression) later. 3212 This results in significant per-connection memory leaks and 3213 has caused some security issues including CVE-2008-1678 and 3214 CVE-2009-4355. 3215 [Steve Henson] 3216 3217 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't 3218 change when encrypting or decrypting. 3219 [Bodo Moeller] 3220 3221 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to 3222 connect and renegotiate with servers which do not support RI. 3223 Until RI is more widely deployed this option is enabled by default. 3224 [Steve Henson] 3225 3226 *) Add "missing" ssl ctrls to clear options and mode. 3227 [Steve Henson] 3228 3229 *) If client attempts to renegotiate and doesn't support RI respond with 3230 a no_renegotiation alert as required by RFC5746. Some renegotiating 3231 TLS clients will continue a connection gracefully when they receive 3232 the alert. Unfortunately OpenSSL mishandled this alert and would hang 3233 waiting for a server hello which it will never receive. Now we treat a 3234 received no_renegotiation alert as a fatal error. This is because 3235 applications requesting a renegotiation might well expect it to succeed 3236 and would have no code in place to handle the server denying it so the 3237 only safe thing to do is to terminate the connection. 3238 [Steve Henson] 3239 3240 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if 3241 peer supports secure renegotiation and 0 otherwise. Print out peer 3242 renegotiation support in s_client/s_server. 3243 [Steve Henson] 3244 3245 *) Replace the highly broken and deprecated SPKAC certification method with 3246 the updated NID creation version. This should correctly handle UTF8. 3247 [Steve Henson] 3248 3249 *) Implement RFC5746. Re-enable renegotiation but require the extension 3250 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 3251 turns out to be a bad idea. It has been replaced by 3252 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with 3253 SSL_CTX_set_options(). This is really not recommended unless you 3254 know what you are doing. 3255 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson] 3256 3257 *) Fixes to stateless session resumption handling. Use initial_ctx when 3258 issuing and attempting to decrypt tickets in case it has changed during 3259 servername handling. Use a non-zero length session ID when attempting 3260 stateless session resumption: this makes it possible to determine if 3261 a resumption has occurred immediately after receiving server hello 3262 (several places in OpenSSL subtly assume this) instead of later in 3263 the handshake. 3264 [Steve Henson] 3265 3266 *) The functions ENGINE_ctrl(), OPENSSL_isservice(), 3267 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error 3268 fixes for a few places where the return code is not checked 3269 correctly. 3270 [Julia Lawall <julia@diku.dk>] 3271 3272 *) Add --strict-warnings option to Configure script to include devteam 3273 warnings in other configurations. 3274 [Steve Henson] 3275 3276 *) Add support for --libdir option and LIBDIR variable in makefiles. This 3277 makes it possible to install openssl libraries in locations which 3278 have names other than "lib", for example "/usr/lib64" which some 3279 systems need. 3280 [Steve Henson, based on patch from Jeremy Utley] 3281 3282 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of 3283 X690 8.9.12 and can produce some misleading textual output of OIDs. 3284 [Steve Henson, reported by Dan Kaminsky] 3285 3286 *) Delete MD2 from algorithm tables. This follows the recommendation in 3287 several standards that it is not used in new applications due to 3288 several cryptographic weaknesses. For binary compatibility reasons 3289 the MD2 API is still compiled in by default. 3290 [Steve Henson] 3291 3292 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved 3293 and restored. 3294 [Steve Henson] 3295 3296 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and 3297 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name 3298 clash. 3299 [Guenter <lists@gknw.net>] 3300 3301 *) Fix the server certificate chain building code to use X509_verify_cert(), 3302 it used to have an ad-hoc builder which was unable to cope with anything 3303 other than a simple chain. 3304 [David Woodhouse <dwmw2@infradead.org>, Steve Henson] 3305 3306 *) Don't check self signed certificate signatures in X509_verify_cert() 3307 by default (a flag can override this): it just wastes time without 3308 adding any security. As a useful side effect self signed root CAs 3309 with non-FIPS digests are now usable in FIPS mode. 3310 [Steve Henson] 3311 3312 *) In dtls1_process_out_of_seq_message() the check if the current message 3313 is already buffered was missing. For every new message was memory 3314 allocated, allowing an attacker to perform an denial of service attack 3315 with sending out of seq handshake messages until there is no memory 3316 left. Additionally every future messege was buffered, even if the 3317 sequence number made no sense and would be part of another handshake. 3318 So only messages with sequence numbers less than 10 in advance will be 3319 buffered. (CVE-2009-1378) 3320 [Robin Seggelmann, discovered by Daniel Mentz] 3321 3322 *) Records are buffered if they arrive with a future epoch to be 3323 processed after finishing the corresponding handshake. There is 3324 currently no limitation to this buffer allowing an attacker to perform 3325 a DOS attack with sending records with future epochs until there is no 3326 memory left. This patch adds the pqueue_size() function to detemine 3327 the size of a buffer and limits the record buffer to 100 entries. 3328 (CVE-2009-1377) 3329 [Robin Seggelmann, discovered by Daniel Mentz] 3330 3331 *) Keep a copy of frag->msg_header.frag_len so it can be used after the 3332 parent structure is freed. (CVE-2009-1379) 3333 [Daniel Mentz] 3334 3335 *) Handle non-blocking I/O properly in SSL_shutdown() call. 3336 [Darryl Miles <darryl-mailinglists@netbauds.net>] 3337 3338 *) Add 2.5.4.* OIDs 3339 [Ilya O. <vrghost@gmail.com>] 3340 3341 Changes between 0.9.8k and 0.9.8l [5 Nov 2009] 3342 3343 *) Disable renegotiation completely - this fixes a severe security 3344 problem (CVE-2009-3555) at the cost of breaking all 3345 renegotiation. Renegotiation can be re-enabled by setting 3346 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at 3347 run-time. This is really not recommended unless you know what 3348 you're doing. 3349 [Ben Laurie] 3350 3351 Changes between 0.9.8j and 0.9.8k [25 Mar 2009] 3352 3353 *) Don't set val to NULL when freeing up structures, it is freed up by 3354 underlying code. If sizeof(void *) > sizeof(long) this can result in 3355 zeroing past the valid field. (CVE-2009-0789) 3356 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>] 3357 3358 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not 3359 checked correctly. This would allow some invalid signed attributes to 3360 appear to verify correctly. (CVE-2009-0591) 3361 [Ivan Nestlerode <inestlerode@us.ibm.com>] 3362 3363 *) Reject UniversalString and BMPString types with invalid lengths. This 3364 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have 3365 a legal length. (CVE-2009-0590) 3366 [Steve Henson] 3367 3368 *) Set S/MIME signing as the default purpose rather than setting it 3369 unconditionally. This allows applications to override it at the store 3370 level. 3371 [Steve Henson] 3372 3373 *) Permit restricted recursion of ASN1 strings. This is needed in practice 3374 to handle some structures. 3375 [Steve Henson] 3376 3377 *) Improve efficiency of mem_gets: don't search whole buffer each time 3378 for a '\n' 3379 [Jeremy Shapiro <jnshapir@us.ibm.com>] 3380 3381 *) New -hex option for openssl rand. 3382 [Matthieu Herrb] 3383 3384 *) Print out UTF8String and NumericString when parsing ASN1. 3385 [Steve Henson] 3386 3387 *) Support NumericString type for name components. 3388 [Steve Henson] 3389 3390 *) Allow CC in the environment to override the automatically chosen 3391 compiler. Note that nothing is done to ensure flags work with the 3392 chosen compiler. 3393 [Ben Laurie] 3394 3395 Changes between 0.9.8i and 0.9.8j [07 Jan 2009] 3396 3397 *) Properly check EVP_VerifyFinal() and similar return values 3398 (CVE-2008-5077). 3399 [Ben Laurie, Bodo Moeller, Google Security Team] 3400 3401 *) Enable TLS extensions by default. 3402 [Ben Laurie] 3403 3404 *) Allow the CHIL engine to be loaded, whether the application is 3405 multithreaded or not. (This does not release the developer from the 3406 obligation to set up the dynamic locking callbacks.) 3407 [Sander Temme <sander@temme.net>] 3408 3409 *) Use correct exit code if there is an error in dgst command. 3410 [Steve Henson; problem pointed out by Roland Dirlewanger] 3411 3412 *) Tweak Configure so that you need to say "experimental-jpake" to enable 3413 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications. 3414 [Bodo Moeller] 3415 3416 *) Add experimental JPAKE support, including demo authentication in 3417 s_client and s_server. 3418 [Ben Laurie] 3419 3420 *) Set the comparison function in v3_addr_canonize(). 3421 [Rob Austein <sra@hactrn.net>] 3422 3423 *) Add support for XMPP STARTTLS in s_client. 3424 [Philip Paeps <philip@freebsd.org>] 3425 3426 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior 3427 to ensure that even with this option, only ciphersuites in the 3428 server's preference list will be accepted. (Note that the option 3429 applies only when resuming a session, so the earlier behavior was 3430 just about the algorithm choice for symmetric cryptography.) 3431 [Bodo Moeller] 3432 3433 Changes between 0.9.8h and 0.9.8i [15 Sep 2008] 3434 3435 *) Fix NULL pointer dereference if a DTLS server received 3436 ChangeCipherSpec as first record (CVE-2009-1386). 3437 [PR #1679] 3438 3439 *) Fix a state transitition in s3_srvr.c and d1_srvr.c 3440 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...). 3441 [Nagendra Modadugu] 3442 3443 *) The fix in 0.9.8c that supposedly got rid of unsafe 3444 double-checked locking was incomplete for RSA blinding, 3445 addressing just one layer of what turns out to have been 3446 doubly unsafe triple-checked locking. 3447 3448 So now fix this for real by retiring the MONT_HELPER macro 3449 in crypto/rsa/rsa_eay.c. 3450 3451 [Bodo Moeller; problem pointed out by Marius Schilder] 3452 3453 *) Various precautionary measures: 3454 3455 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h). 3456 3457 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c). 3458 (NB: This would require knowledge of the secret session ticket key 3459 to exploit, in which case you'd be SOL either way.) 3460 3461 - Change bn_nist.c so that it will properly handle input BIGNUMs 3462 outside the expected range. 3463 3464 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG 3465 builds. 3466 3467 [Neel Mehta, Bodo Moeller] 3468 3469 *) Allow engines to be "soft loaded" - i.e. optionally don't die if 3470 the load fails. Useful for distros. 3471 [Ben Laurie and the FreeBSD team] 3472 3473 *) Add support for Local Machine Keyset attribute in PKCS#12 files. 3474 [Steve Henson] 3475 3476 *) Fix BN_GF2m_mod_arr() top-bit cleanup code. 3477 [Huang Ying] 3478 3479 *) Expand ENGINE to support engine supplied SSL client certificate functions. 3480 3481 This work was sponsored by Logica. 3482 [Steve Henson] 3483 3484 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows 3485 keystores. Support for SSL/TLS client authentication too. 3486 Not compiled unless enable-capieng specified to Configure. 3487 3488 This work was sponsored by Logica. 3489 [Steve Henson] 3490 3491 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using 3492 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain 3493 attribute creation routines such as certifcate requests and PKCS#12 3494 files. 3495 [Steve Henson] 3496 3497 Changes between 0.9.8g and 0.9.8h [28 May 2008] 3498 3499 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS 3500 handshake which could lead to a cilent crash as found using the 3501 Codenomicon TLS test suite (CVE-2008-1672) 3502 [Steve Henson, Mark Cox] 3503 3504 *) Fix double free in TLS server name extensions which could lead to 3505 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891) 3506 [Joe Orton] 3507 3508 *) Clear error queue in SSL_CTX_use_certificate_chain_file() 3509 3510 Clear the error queue to ensure that error entries left from 3511 older function calls do not interfere with the correct operation. 3512 [Lutz Jaenicke, Erik de Castro Lopo] 3513 3514 *) Remove root CA certificates of commercial CAs: 3515 3516 The OpenSSL project does not recommend any specific CA and does not 3517 have any policy with respect to including or excluding any CA. 3518 Therefore it does not make any sense to ship an arbitrary selection 3519 of root CA certificates with the OpenSSL software. 3520 [Lutz Jaenicke] 3521 3522 *) RSA OAEP patches to fix two separate invalid memory reads. 3523 The first one involves inputs when 'lzero' is greater than 3524 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes 3525 before the beginning of from). The second one involves inputs where 3526 the 'db' section contains nothing but zeroes (there is a one-byte 3527 invalid read after the end of 'db'). 3528 [Ivan Nestlerode <inestlerode@us.ibm.com>] 3529 3530 *) Partial backport from 0.9.9-dev: 3531 3532 Introduce bn_mul_mont (dedicated Montgomery multiplication 3533 procedure) as a candidate for BIGNUM assembler implementation. 3534 While 0.9.9-dev uses assembler for various architectures, only 3535 x86_64 is available by default here in the 0.9.8 branch, and 3536 32-bit x86 is available through a compile-time setting. 3537 3538 To try the 32-bit x86 assembler implementation, use Configure 3539 option "enable-montasm" (which exists only for this backport). 3540 3541 As "enable-montasm" for 32-bit x86 disclaims code stability 3542 anyway, in this constellation we activate additional code 3543 backported from 0.9.9-dev for further performance improvements, 3544 namely BN_from_montgomery_word. (To enable this otherwise, 3545 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".) 3546 3547 [Andy Polyakov (backport partially by Bodo Moeller)] 3548 3549 *) Add TLS session ticket callback. This allows an application to set 3550 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed 3551 values. This is useful for key rollover for example where several key 3552 sets may exist with different names. 3553 [Steve Henson] 3554 3555 *) Reverse ENGINE-internal logic for caching default ENGINE handles. 3556 This was broken until now in 0.9.8 releases, such that the only way 3557 a registered ENGINE could be used (assuming it initialises 3558 successfully on the host) was to explicitly set it as the default 3559 for the relevant algorithms. This is in contradiction with 0.9.7 3560 behaviour and the documentation. With this fix, when an ENGINE is 3561 registered into a given algorithm's table of implementations, the 3562 'uptodate' flag is reset so that auto-discovery will be used next 3563 time a new context for that algorithm attempts to select an 3564 implementation. 3565 [Ian Lister (tweaked by Geoff Thorpe)] 3566 3567 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9 3568 implemention in the following ways: 3569 3570 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be 3571 hard coded. 3572 3573 Lack of BER streaming support means one pass streaming processing is 3574 only supported if data is detached: setting the streaming flag is 3575 ignored for embedded content. 3576 3577 CMS support is disabled by default and must be explicitly enabled 3578 with the enable-cms configuration option. 3579 [Steve Henson] 3580 3581 *) Update the GMP engine glue to do direct copies between BIGNUM and 3582 mpz_t when openssl and GMP use the same limb size. Otherwise the 3583 existing "conversion via a text string export" trick is still used. 3584 [Paul Sheer <paulsheer@gmail.com>] 3585 3586 *) Zlib compression BIO. This is a filter BIO which compressed and 3587 uncompresses any data passed through it. 3588 [Steve Henson] 3589 3590 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement 3591 RFC3394 compatible AES key wrapping. 3592 [Steve Henson] 3593 3594 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0(): 3595 sets string data without copying. X509_ALGOR_set0() and 3596 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier) 3597 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data 3598 from an X509_ATTRIBUTE structure optionally checking it occurs only 3599 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied 3600 data. 3601 [Steve Henson] 3602 3603 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set() 3604 to get the expected BN_FLG_CONSTTIME behavior. 3605 [Bodo Moeller (Google)] 3606 3607 *) Netware support: 3608 3609 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets 3610 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT) 3611 - added some more tests to do_tests.pl 3612 - fixed RunningProcess usage so that it works with newer LIBC NDKs too 3613 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency 3614 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc, 3615 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc 3616 - various changes to netware.pl to enable gcc-cross builds on Win32 3617 platform 3618 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD) 3619 - various changes to fix missing prototype warnings 3620 - fixed x86nasm.pl to create correct asm files for NASM COFF output 3621 - added AES, WHIRLPOOL and CPUID assembler code to build files 3622 - added missing AES assembler make rules to mk1mf.pl 3623 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply 3624 [Guenter Knauf <eflash@gmx.net>] 3625 3626 *) Implement certificate status request TLS extension defined in RFC3546. 3627 A client can set the appropriate parameters and receive the encoded 3628 OCSP response via a callback. A server can query the supplied parameters 3629 and set the encoded OCSP response in the callback. Add simplified examples 3630 to s_client and s_server. 3631 [Steve Henson] 3632 3633 Changes between 0.9.8f and 0.9.8g [19 Oct 2007] 3634 3635 *) Fix various bugs: 3636 + Binary incompatibility of ssl_ctx_st structure 3637 + DTLS interoperation with non-compliant servers 3638 + Don't call get_session_cb() without proposed session 3639 + Fix ia64 assembler code 3640 [Andy Polyakov, Steve Henson] 3641 3642 Changes between 0.9.8e and 0.9.8f [11 Oct 2007] 3643 3644 *) DTLS Handshake overhaul. There were longstanding issues with 3645 OpenSSL DTLS implementation, which were making it impossible for 3646 RFC 4347 compliant client to communicate with OpenSSL server. 3647 Unfortunately just fixing these incompatibilities would "cut off" 3648 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e 3649 server keeps tolerating non RFC compliant syntax. The opposite is 3650 not true, 0.9.8f client can not communicate with earlier server. 3651 This update even addresses CVE-2007-4995. 3652 [Andy Polyakov] 3653 3654 *) Changes to avoid need for function casts in OpenSSL: some compilers 3655 (gcc 4.2 and later) reject their use. 3656 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>, 3657 Steve Henson] 3658 3659 *) Add RFC4507 support to OpenSSL. This includes the corrections in 3660 RFC4507bis. The encrypted ticket format is an encrypted encoded 3661 SSL_SESSION structure, that way new session features are automatically 3662 supported. 3663 3664 If a client application caches session in an SSL_SESSION structure 3665 support is transparent because tickets are now stored in the encoded 3666 SSL_SESSION. 3667 3668 The SSL_CTX structure automatically generates keys for ticket 3669 protection in servers so again support should be possible 3670 with no application modification. 3671 3672 If a client or server wishes to disable RFC4507 support then the option 3673 SSL_OP_NO_TICKET can be set. 3674 3675 Add a TLS extension debugging callback to allow the contents of any client 3676 or server extensions to be examined. 3677 3678 This work was sponsored by Google. 3679 [Steve Henson] 3680 3681 *) Add initial support for TLS extensions, specifically for the server_name 3682 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now 3683 have new members for a host name. The SSL data structure has an 3684 additional member SSL_CTX *initial_ctx so that new sessions can be 3685 stored in that context to allow for session resumption, even after the 3686 SSL has been switched to a new SSL_CTX in reaction to a client's 3687 server_name extension. 3688 3689 New functions (subject to change): 3690 3691 SSL_get_servername() 3692 SSL_get_servername_type() 3693 SSL_set_SSL_CTX() 3694 3695 New CTRL codes and macros (subject to change): 3696 3697 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 3698 - SSL_CTX_set_tlsext_servername_callback() 3699 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 3700 - SSL_CTX_set_tlsext_servername_arg() 3701 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() 3702 3703 openssl s_client has a new '-servername ...' option. 3704 3705 openssl s_server has new options '-servername_host ...', '-cert2 ...', 3706 '-key2 ...', '-servername_fatal' (subject to change). This allows 3707 testing the HostName extension for a specific single host name ('-cert' 3708 and '-key' remain fallbacks for handshakes without HostName 3709 negotiation). If the unrecogninzed_name alert has to be sent, this by 3710 default is a warning; it becomes fatal with the '-servername_fatal' 3711 option. 3712 3713 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson] 3714 3715 *) Add AES and SSE2 assembly language support to VC++ build. 3716 [Steve Henson] 3717 3718 *) Mitigate attack on final subtraction in Montgomery reduction. 3719 [Andy Polyakov] 3720 3721 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0 3722 (which previously caused an internal error). 3723 [Bodo Moeller] 3724 3725 *) Squeeze another 10% out of IGE mode when in != out. 3726 [Ben Laurie] 3727 3728 *) AES IGE mode speedup. 3729 [Dean Gaudet (Google)] 3730 3731 *) Add the Korean symmetric 128-bit cipher SEED (see 3732 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and 3733 add SEED ciphersuites from RFC 4162: 3734 3735 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA" 3736 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA" 3737 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA" 3738 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA" 3739 3740 To minimize changes between patchlevels in the OpenSSL 0.9.8 3741 series, SEED remains excluded from compilation unless OpenSSL 3742 is configured with 'enable-seed'. 3743 [KISA, Bodo Moeller] 3744 3745 *) Mitigate branch prediction attacks, which can be practical if a 3746 single processor is shared, allowing a spy process to extract 3747 information. For detailed background information, see 3748 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron, 3749 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL 3750 and Necessary Software Countermeasures"). The core of the change 3751 are new versions BN_div_no_branch() and 3752 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(), 3753 respectively, which are slower, but avoid the security-relevant 3754 conditional branches. These are automatically called by BN_div() 3755 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one 3756 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to 3757 remove a conditional branch. 3758 3759 BN_FLG_CONSTTIME is the new name for the previous 3760 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just 3761 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag 3762 in the exponent causes BN_mod_exp_mont() to use the alternative 3763 implementation in BN_mod_exp_mont_consttime().) The old name 3764 remains as a deprecated alias. 3765 3766 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general 3767 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses 3768 constant-time implementations for more than just exponentiation. 3769 Here too the old name is kept as a deprecated alias. 3770 3771 BN_BLINDING_new() will now use BN_dup() for the modulus so that 3772 the BN_BLINDING structure gets an independent copy of the 3773 modulus. This means that the previous "BIGNUM *m" argument to 3774 BN_BLINDING_new() and to BN_BLINDING_create_param() now 3775 essentially becomes "const BIGNUM *m", although we can't actually 3776 change this in the header file before 0.9.9. It allows 3777 RSA_setup_blinding() to use BN_with_flags() on the modulus to 3778 enable BN_FLG_CONSTTIME. 3779 3780 [Matthew D Wood (Intel Corp)] 3781 3782 *) In the SSL/TLS server implementation, be strict about session ID 3783 context matching (which matters if an application uses a single 3784 external cache for different purposes). Previously, 3785 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was 3786 set. This did ensure strict client verification, but meant that, 3787 with applications using a single external cache for quite 3788 different requirements, clients could circumvent ciphersuite 3789 restrictions for a given session ID context by starting a session 3790 in a different context. 3791 [Bodo Moeller] 3792 3793 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that 3794 a ciphersuite string such as "DEFAULT:RSA" cannot enable 3795 authentication-only ciphersuites. 3796 [Bodo Moeller] 3797 3798 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was 3799 not complete and could lead to a possible single byte overflow 3800 (CVE-2007-5135) [Ben Laurie] 3801 3802 Changes between 0.9.8d and 0.9.8e [23 Feb 2007] 3803 3804 *) Since AES128 and AES256 (and similarly Camellia128 and 3805 Camellia256) share a single mask bit in the logic of 3806 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a 3807 kludge to work properly if AES128 is available and AES256 isn't 3808 (or if Camellia128 is available and Camellia256 isn't). 3809 [Victor Duchovni] 3810 3811 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c 3812 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters): 3813 When a point or a seed is encoded in a BIT STRING, we need to 3814 prevent the removal of trailing zero bits to get the proper DER 3815 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case 3816 of a NamedBitList, for which trailing 0 bits need to be removed.) 3817 [Bodo Moeller] 3818 3819 *) Have SSL/TLS server implementation tolerate "mismatched" record 3820 protocol version while receiving ClientHello even if the 3821 ClientHello is fragmented. (The server can't insist on the 3822 particular protocol version it has chosen before the ServerHello 3823 message has informed the client about his choice.) 3824 [Bodo Moeller] 3825 3826 *) Add RFC 3779 support. 3827 [Rob Austein for ARIN, Ben Laurie] 3828 3829 *) Load error codes if they are not already present instead of using a 3830 static variable. This allows them to be cleanly unloaded and reloaded. 3831 Improve header file function name parsing. 3832 [Steve Henson] 3833 3834 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO 3835 or CAPABILITY handshake as required by RFCs. 3836 [Goetz Babin-Ebell] 3837 3838 Changes between 0.9.8c and 0.9.8d [28 Sep 2006] 3839 3840 *) Introduce limits to prevent malicious keys being able to 3841 cause a denial of service. (CVE-2006-2940) 3842 [Steve Henson, Bodo Moeller] 3843 3844 *) Fix ASN.1 parsing of certain invalid structures that can result 3845 in a denial of service. (CVE-2006-2937) [Steve Henson] 3846 3847 *) Fix buffer overflow in SSL_get_shared_ciphers() function. 3848 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] 3849 3850 *) Fix SSL client code which could crash if connecting to a 3851 malicious SSLv2 server. (CVE-2006-4343) 3852 [Tavis Ormandy and Will Drewry, Google Security Team] 3853 3854 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites 3855 match only those. Before that, "AES256-SHA" would be interpreted 3856 as a pattern and match "AES128-SHA" too (since AES128-SHA got 3857 the same strength classification in 0.9.7h) as we currently only 3858 have a single AES bit in the ciphersuite description bitmap. 3859 That change, however, also applied to ciphersuite strings such as 3860 "RC4-MD5" that intentionally matched multiple ciphersuites -- 3861 namely, SSL 2.0 ciphersuites in addition to the more common ones 3862 from SSL 3.0/TLS 1.0. 3863 3864 So we change the selection algorithm again: Naming an explicit 3865 ciphersuite selects this one ciphersuite, and any other similar 3866 ciphersuite (same bitmap) from *other* protocol versions. 3867 Thus, "RC4-MD5" again will properly select both the SSL 2.0 3868 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite. 3869 3870 Since SSL 2.0 does not have any ciphersuites for which the 3871 128/256 bit distinction would be relevant, this works for now. 3872 The proper fix will be to use different bits for AES128 and 3873 AES256, which would have avoided the problems from the beginning; 3874 however, bits are scarce, so we can only do this in a new release 3875 (not just a patchlevel) when we can change the SSL_CIPHER 3876 definition to split the single 'unsigned long mask' bitmap into 3877 multiple values to extend the available space. 3878 3879 [Bodo Moeller] 3880 3881 Changes between 0.9.8b and 0.9.8c [05 Sep 2006] 3882 3883 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher 3884 (CVE-2006-4339) [Ben Laurie and Google Security Team] 3885 3886 *) Add AES IGE and biIGE modes. 3887 [Ben Laurie] 3888 3889 *) Change the Unix randomness entropy gathering to use poll() when 3890 possible instead of select(), since the latter has some 3891 undesirable limitations. 3892 [Darryl Miles via Richard Levitte and Bodo Moeller] 3893 3894 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special 3895 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites 3896 cannot be implicitly activated as part of, e.g., the "AES" alias. 3897 However, please upgrade to OpenSSL 0.9.9[-dev] for 3898 non-experimental use of the ECC ciphersuites to get TLS extension 3899 support, which is required for curve and point format negotiation 3900 to avoid potential handshake problems. 3901 [Bodo Moeller] 3902 3903 *) Disable rogue ciphersuites: 3904 3905 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") 3906 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") 3907 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") 3908 3909 The latter two were purportedly from 3910 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really 3911 appear there. 3912 3913 Also deactivate the remaining ciphersuites from 3914 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as 3915 unofficial, and the ID has long expired. 3916 [Bodo Moeller] 3917 3918 *) Fix RSA blinding Heisenbug (problems sometimes occured on 3919 dual-core machines) and other potential thread-safety issues. 3920 [Bodo Moeller] 3921 3922 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key 3923 versions), which is now available for royalty-free use 3924 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html). 3925 Also, add Camellia TLS ciphersuites from RFC 4132. 3926 3927 To minimize changes between patchlevels in the OpenSSL 0.9.8 3928 series, Camellia remains excluded from compilation unless OpenSSL 3929 is configured with 'enable-camellia'. 3930 [NTT] 3931 3932 *) Disable the padding bug check when compression is in use. The padding 3933 bug check assumes the first packet is of even length, this is not 3934 necessarily true if compresssion is enabled and can result in false 3935 positives causing handshake failure. The actual bug test is ancient 3936 code so it is hoped that implementations will either have fixed it by 3937 now or any which still have the bug do not support compression. 3938 [Steve Henson] 3939 3940 Changes between 0.9.8a and 0.9.8b [04 May 2006] 3941 3942 *) When applying a cipher rule check to see if string match is an explicit 3943 cipher suite and only match that one cipher suite if it is. 3944 [Steve Henson] 3945 3946 *) Link in manifests for VC++ if needed. 3947 [Austin Ziegler <halostatue@gmail.com>] 3948 3949 *) Update support for ECC-based TLS ciphersuites according to 3950 draft-ietf-tls-ecc-12.txt with proposed changes (but without 3951 TLS extensions, which are supported starting with the 0.9.9 3952 branch, not in the OpenSSL 0.9.8 branch). 3953 [Douglas Stebila] 3954 3955 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support 3956 opaque EVP_CIPHER_CTX handling. 3957 [Steve Henson] 3958 3959 *) Fixes and enhancements to zlib compression code. We now only use 3960 "zlib1.dll" and use the default __cdecl calling convention on Win32 3961 to conform with the standards mentioned here: 3962 http://www.zlib.net/DLL_FAQ.txt 3963 Static zlib linking now works on Windows and the new --with-zlib-include 3964 --with-zlib-lib options to Configure can be used to supply the location 3965 of the headers and library. Gracefully handle case where zlib library 3966 can't be loaded. 3967 [Steve Henson] 3968 3969 *) Several fixes and enhancements to the OID generation code. The old code 3970 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't 3971 handle numbers larger than ULONG_MAX, truncated printing and had a 3972 non standard OBJ_obj2txt() behaviour. 3973 [Steve Henson] 3974 3975 *) Add support for building of engines under engine/ as shared libraries 3976 under VC++ build system. 3977 [Steve Henson] 3978 3979 *) Corrected the numerous bugs in the Win32 path splitter in DSO. 3980 Hopefully, we will not see any false combination of paths any more. 3981 [Richard Levitte] 3982 3983 Changes between 0.9.8 and 0.9.8a [11 Oct 2005] 3984 3985 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING 3986 (part of SSL_OP_ALL). This option used to disable the 3987 countermeasure against man-in-the-middle protocol-version 3988 rollback in the SSL 2.0 server implementation, which is a bad 3989 idea. (CVE-2005-2969) 3990 3991 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center 3992 for Information Security, National Institute of Advanced Industrial 3993 Science and Technology [AIST], Japan)] 3994 3995 *) Add two function to clear and return the verify parameter flags. 3996 [Steve Henson] 3997 3998 *) Keep cipherlists sorted in the source instead of sorting them at 3999 runtime, thus removing the need for a lock. 4000 [Nils Larsch] 4001 4002 *) Avoid some small subgroup attacks in Diffie-Hellman. 4003 [Nick Mathewson and Ben Laurie] 4004 4005 *) Add functions for well-known primes. 4006 [Nick Mathewson] 4007 4008 *) Extended Windows CE support. 4009 [Satoshi Nakamura and Andy Polyakov] 4010 4011 *) Initialize SSL_METHOD structures at compile time instead of during 4012 runtime, thus removing the need for a lock. 4013 [Steve Henson] 4014 4015 *) Make PKCS7_decrypt() work even if no certificate is supplied by 4016 attempting to decrypt each encrypted key in turn. Add support to 4017 smime utility. 4018 [Steve Henson] 4019 4020 Changes between 0.9.7h and 0.9.8 [05 Jul 2005] 4021 4022 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after 4023 OpenSSL 0.9.8.] 4024 4025 *) Add libcrypto.pc and libssl.pc for those who feel they need them. 4026 [Richard Levitte] 4027 4028 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private 4029 key into the same file any more. 4030 [Richard Levitte] 4031 4032 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors. 4033 [Andy Polyakov] 4034 4035 *) Add -utf8 command line and config file option to 'ca'. 4036 [Stefan <stf@udoma.org] 4037 4038 *) Removed the macro des_crypt(), as it seems to conflict with some 4039 libraries. Use DES_crypt(). 4040 [Richard Levitte] 4041 4042 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This 4043 involves renaming the source and generated shared-libs for 4044 both. The engines will accept the corrected or legacy ids 4045 ('ncipher' and '4758_cca' respectively) when binding. NB, 4046 this only applies when building 'shared'. 4047 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe] 4048 4049 *) Add attribute functions to EVP_PKEY structure. Modify 4050 PKCS12_create() to recognize a CSP name attribute and 4051 use it. Make -CSP option work again in pkcs12 utility. 4052 [Steve Henson] 4053 4054 *) Add new functionality to the bn blinding code: 4055 - automatic re-creation of the BN_BLINDING parameters after 4056 a fixed number of uses (currently 32) 4057 - add new function for parameter creation 4058 - introduce flags to control the update behaviour of the 4059 BN_BLINDING parameters 4060 - hide BN_BLINDING structure 4061 Add a second BN_BLINDING slot to the RSA structure to improve 4062 performance when a single RSA object is shared among several 4063 threads. 4064 [Nils Larsch] 4065 4066 *) Add support for DTLS. 4067 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie] 4068 4069 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1) 4070 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file() 4071 [Walter Goulet] 4072 4073 *) Remove buggy and incompletet DH cert support from 4074 ssl/ssl_rsa.c and ssl/s3_both.c 4075 [Nils Larsch] 4076 4077 *) Use SHA-1 instead of MD5 as the default digest algorithm for 4078 the apps/openssl applications. 4079 [Nils Larsch] 4080 4081 *) Compile clean with "-Wall -Wmissing-prototypes 4082 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently 4083 DEBUG_SAFESTACK must also be set. 4084 [Ben Laurie] 4085 4086 *) Change ./Configure so that certain algorithms can be disabled by default. 4087 The new counterpiece to "no-xxx" is "enable-xxx". 4088 4089 The patented RC5 and MDC2 algorithms will now be disabled unless 4090 "enable-rc5" and "enable-mdc2", respectively, are specified. 4091 4092 (IDEA remains enabled despite being patented. This is because IDEA 4093 is frequently required for interoperability, and there is no license 4094 fee for non-commercial use. As before, "no-idea" can be used to 4095 avoid this algorithm.) 4096 4097 [Bodo Moeller] 4098 4099 *) Add processing of proxy certificates (see RFC 3820). This work was 4100 sponsored by KTH (The Royal Institute of Technology in Stockholm) and 4101 EGEE (Enabling Grids for E-science in Europe). 4102 [Richard Levitte] 4103 4104 *) RC4 performance overhaul on modern architectures/implementations, such 4105 as Intel P4, IA-64 and AMD64. 4106 [Andy Polyakov] 4107 4108 *) New utility extract-section.pl. This can be used specify an alternative 4109 section number in a pod file instead of having to treat each file as 4110 a separate case in Makefile. This can be done by adding two lines to the 4111 pod file: 4112 4113 =for comment openssl_section:XXX 4114 4115 The blank line is mandatory. 4116 4117 [Steve Henson] 4118 4119 *) New arguments -certform, -keyform and -pass for s_client and s_server 4120 to allow alternative format key and certificate files and passphrase 4121 sources. 4122 [Steve Henson] 4123 4124 *) New structure X509_VERIFY_PARAM which combines current verify parameters, 4125 update associated structures and add various utility functions. 4126 4127 Add new policy related verify parameters, include policy checking in 4128 standard verify code. Enhance 'smime' application with extra parameters 4129 to support policy checking and print out. 4130 [Steve Henson] 4131 4132 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3 4133 Nehemiah processors. These extensions support AES encryption in hardware 4134 as well as RNG (though RNG support is currently disabled). 4135 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov] 4136 4137 *) Deprecate BN_[get|set]_params() functions (they were ignored internally). 4138 [Geoff Thorpe] 4139 4140 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented. 4141 [Andy Polyakov and a number of other people] 4142 4143 *) Improved PowerPC platform support. Most notably BIGNUM assembler 4144 implementation contributed by IBM. 4145 [Suresh Chari, Peter Waltenberg, Andy Polyakov] 4146 4147 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public 4148 exponent rather than 'unsigned long'. There is a corresponding change to 4149 the new 'rsa_keygen' element of the RSA_METHOD structure. 4150 [Jelte Jansen, Geoff Thorpe] 4151 4152 *) Functionality for creating the initial serial number file is now 4153 moved from CA.pl to the 'ca' utility with a new option -create_serial. 4154 4155 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial 4156 number file to 1, which is bound to cause problems. To avoid 4157 the problems while respecting compatibility between different 0.9.7 4158 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in 4159 CA.pl for serial number initialization. With the new release 0.9.8, 4160 we can fix the problem directly in the 'ca' utility.) 4161 [Steve Henson] 4162 4163 *) Reduced header interdepencies by declaring more opaque objects in 4164 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will 4165 give fewer recursive includes, which could break lazy source code - so 4166 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always, 4167 developers should define this symbol when building and using openssl to 4168 ensure they track the recommended behaviour, interfaces, [etc], but 4169 backwards-compatible behaviour prevails when this isn't defined. 4170 [Geoff Thorpe] 4171 4172 *) New function X509_POLICY_NODE_print() which prints out policy nodes. 4173 [Steve Henson] 4174 4175 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality. 4176 This will generate a random key of the appropriate length based on the 4177 cipher context. The EVP_CIPHER can provide its own random key generation 4178 routine to support keys of a specific form. This is used in the des and 4179 3des routines to generate a key of the correct parity. Update S/MIME 4180 code to use new functions and hence generate correct parity DES keys. 4181 Add EVP_CHECK_DES_KEY #define to return an error if the key is not 4182 valid (weak or incorrect parity). 4183 [Steve Henson] 4184 4185 *) Add a local set of CRLs that can be used by X509_verify_cert() as well 4186 as looking them up. This is useful when the verified structure may contain 4187 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs 4188 present unless the new PKCS7_NO_CRL flag is asserted. 4189 [Steve Henson] 4190 4191 *) Extend ASN1 oid configuration module. It now additionally accepts the 4192 syntax: 4193 4194 shortName = some long name, 1.2.3.4 4195 [Steve Henson] 4196 4197 *) Reimplemented the BN_CTX implementation. There is now no more static 4198 limitation on the number of variables it can handle nor the depth of the 4199 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack 4200 information can now expand as required, and rather than having a single 4201 static array of bignums, BN_CTX now uses a linked-list of such arrays 4202 allowing it to expand on demand whilst maintaining the usefulness of 4203 BN_CTX's "bundling". 4204 [Geoff Thorpe] 4205 4206 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD 4207 to allow all RSA operations to function using a single BN_CTX. 4208 [Geoff Thorpe] 4209 4210 *) Preliminary support for certificate policy evaluation and checking. This 4211 is initially intended to pass the tests outlined in "Conformance Testing 4212 of Relying Party Client Certificate Path Processing Logic" v1.07. 4213 [Steve Henson] 4214 4215 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and 4216 remained unused and not that useful. A variety of other little bignum 4217 tweaks and fixes have also been made continuing on from the audit (see 4218 below). 4219 [Geoff Thorpe] 4220 4221 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with 4222 associated ASN1, EVP and SSL functions and old ASN1 macros. 4223 [Richard Levitte] 4224 4225 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results, 4226 and this should never fail. So the return value from the use of 4227 BN_set_word() (which can fail due to needless expansion) is now deprecated; 4228 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro. 4229 [Geoff Thorpe] 4230 4231 *) BN_CTX_get() should return zero-valued bignums, providing the same 4232 initialised value as BN_new(). 4233 [Geoff Thorpe, suggested by Ulf M��ller] 4234 4235 *) Support for inhibitAnyPolicy certificate extension. 4236 [Steve Henson] 4237 4238 *) An audit of the BIGNUM code is underway, for which debugging code is 4239 enabled when BN_DEBUG is defined. This makes stricter enforcements on what 4240 is considered valid when processing BIGNUMs, and causes execution to 4241 assert() when a problem is discovered. If BN_DEBUG_RAND is defined, 4242 further steps are taken to deliberately pollute unused data in BIGNUM 4243 structures to try and expose faulty code further on. For now, openssl will 4244 (in its default mode of operation) continue to tolerate the inconsistent 4245 forms that it has tolerated in the past, but authors and packagers should 4246 consider trying openssl and their own applications when compiled with 4247 these debugging symbols defined. It will help highlight potential bugs in 4248 their own code, and will improve the test coverage for OpenSSL itself. At 4249 some point, these tighter rules will become openssl's default to improve 4250 maintainability, though the assert()s and other overheads will remain only 4251 in debugging configurations. See bn.h for more details. 4252 [Geoff Thorpe, Nils Larsch, Ulf M��ller] 4253 4254 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure 4255 that can only be obtained through BN_CTX_new() (which implicitly 4256 initialises it). The presence of this function only made it possible 4257 to overwrite an existing structure (and cause memory leaks). 4258 [Geoff Thorpe] 4259 4260 *) Because of the callback-based approach for implementing LHASH as a 4261 template type, lh_insert() adds opaque objects to hash-tables and 4262 lh_doall() or lh_doall_arg() are typically used with a destructor callback 4263 to clean up those corresponding objects before destroying the hash table 4264 (and losing the object pointers). So some over-zealous constifications in 4265 LHASH have been relaxed so that lh_insert() does not take (nor store) the 4266 objects as "const" and the lh_doall[_arg] callback wrappers are not 4267 prototyped to have "const" restrictions on the object pointers they are 4268 given (and so aren't required to cast them away any more). 4269 [Geoff Thorpe] 4270 4271 *) The tmdiff.h API was so ugly and minimal that our own timing utility 4272 (speed) prefers to use its own implementation. The two implementations 4273 haven't been consolidated as yet (volunteers?) but the tmdiff API has had 4274 its object type properly exposed (MS_TM) instead of casting to/from "char 4275 *". This may still change yet if someone realises MS_TM and "ms_time_***" 4276 aren't necessarily the greatest nomenclatures - but this is what was used 4277 internally to the implementation so I've used that for now. 4278 [Geoff Thorpe] 4279 4280 *) Ensure that deprecated functions do not get compiled when 4281 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of 4282 the self-tests were still using deprecated key-generation functions so 4283 these have been updated also. 4284 [Geoff Thorpe] 4285 4286 *) Reorganise PKCS#7 code to separate the digest location functionality 4287 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest(). 4288 New function PKCS7_set_digest() to set the digest type for PKCS#7 4289 digestedData type. Add additional code to correctly generate the 4290 digestedData type and add support for this type in PKCS7 initialization 4291 functions. 4292 [Steve Henson] 4293 4294 *) New function PKCS7_set0_type_other() this initializes a PKCS7 4295 structure of type "other". 4296 [Steve Henson] 4297 4298 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making 4299 sure the loop does correctly stop and breaking ("division by zero") 4300 modulus operations are not performed. The (pre-generated) prime 4301 table crypto/bn/bn_prime.h was already correct, but it could not be 4302 re-generated on some platforms because of the "division by zero" 4303 situation in the script. 4304 [Ralf S. Engelschall] 4305 4306 *) Update support for ECC-based TLS ciphersuites according to 4307 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with 4308 SHA-1 now is only used for "small" curves (where the 4309 representation of a field element takes up to 24 bytes); for 4310 larger curves, the field element resulting from ECDH is directly 4311 used as premaster secret. 4312 [Douglas Stebila (Sun Microsystems Laboratories)] 4313 4314 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2 4315 curve secp160r1 to the tests. 4316 [Douglas Stebila (Sun Microsystems Laboratories)] 4317 4318 *) Add the possibility to load symbols globally with DSO. 4319 [G��tz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte] 4320 4321 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better 4322 control of the error stack. 4323 [Richard Levitte] 4324 4325 *) Add support for STORE in ENGINE. 4326 [Richard Levitte] 4327 4328 *) Add the STORE type. The intention is to provide a common interface 4329 to certificate and key stores, be they simple file-based stores, or 4330 HSM-type store, or LDAP stores, or... 4331 NOTE: The code is currently UNTESTED and isn't really used anywhere. 4332 [Richard Levitte] 4333 4334 *) Add a generic structure called OPENSSL_ITEM. This can be used to 4335 pass a list of arguments to any function as well as provide a way 4336 for a function to pass data back to the caller. 4337 [Richard Levitte] 4338 4339 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup() 4340 works like BUF_strdup() but can be used to duplicate a portion of 4341 a string. The copy gets NUL-terminated. BUF_memdup() duplicates 4342 a memory area. 4343 [Richard Levitte] 4344 4345 *) Add the function sk_find_ex() which works like sk_find(), but will 4346 return an index to an element even if an exact match couldn't be 4347 found. The index is guaranteed to point at the element where the 4348 searched-for key would be inserted to preserve sorting order. 4349 [Richard Levitte] 4350 4351 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but 4352 takes an extra flags argument for optional functionality. Currently, 4353 the following flags are defined: 4354 4355 OBJ_BSEARCH_VALUE_ON_NOMATCH 4356 This one gets OBJ_bsearch_ex() to return a pointer to the first 4357 element where the comparing function returns a negative or zero 4358 number. 4359 4360 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH 4361 This one gets OBJ_bsearch_ex() to return a pointer to the first 4362 element where the comparing function returns zero. This is useful 4363 if there are more than one element where the comparing function 4364 returns zero. 4365 [Richard Levitte] 4366 4367 *) Make it possible to create self-signed certificates with 'openssl ca' 4368 in such a way that the self-signed certificate becomes part of the 4369 CA database and uses the same mechanisms for serial number generation 4370 as all other certificate signing. The new flag '-selfsign' enables 4371 this functionality. Adapt CA.sh and CA.pl.in. 4372 [Richard Levitte] 4373 4374 *) Add functionality to check the public key of a certificate request 4375 against a given private. This is useful to check that a certificate 4376 request can be signed by that key (self-signing). 4377 [Richard Levitte] 4378 4379 *) Make it possible to have multiple active certificates with the same 4380 subject in the CA index file. This is done only if the keyword 4381 'unique_subject' is set to 'no' in the main CA section (default 4382 if 'CA_default') of the configuration file. The value is saved 4383 with the database itself in a separate index attribute file, 4384 named like the index file with '.attr' appended to the name. 4385 [Richard Levitte] 4386 4387 *) Generate muti valued AVAs using '+' notation in config files for 4388 req and dirName. 4389 [Steve Henson] 4390 4391 *) Support for nameConstraints certificate extension. 4392 [Steve Henson] 4393 4394 *) Support for policyConstraints certificate extension. 4395 [Steve Henson] 4396 4397 *) Support for policyMappings certificate extension. 4398 [Steve Henson] 4399 4400 *) Make sure the default DSA_METHOD implementation only uses its 4401 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL, 4402 and change its own handlers to be NULL so as to remove unnecessary 4403 indirection. This lets alternative implementations fallback to the 4404 default implementation more easily. 4405 [Geoff Thorpe] 4406 4407 *) Support for directoryName in GeneralName related extensions 4408 in config files. 4409 [Steve Henson] 4410 4411 *) Make it possible to link applications using Makefile.shared. 4412 Make that possible even when linking against static libraries! 4413 [Richard Levitte] 4414 4415 *) Support for single pass processing for S/MIME signing. This now 4416 means that S/MIME signing can be done from a pipe, in addition 4417 cleartext signing (multipart/signed type) is effectively streaming 4418 and the signed data does not need to be all held in memory. 4419 4420 This is done with a new flag PKCS7_STREAM. When this flag is set 4421 PKCS7_sign() only initializes the PKCS7 structure and the actual signing 4422 is done after the data is output (and digests calculated) in 4423 SMIME_write_PKCS7(). 4424 [Steve Henson] 4425 4426 *) Add full support for -rpath/-R, both in shared libraries and 4427 applications, at least on the platforms where it's known how 4428 to do it. 4429 [Richard Levitte] 4430 4431 *) In crypto/ec/ec_mult.c, implement fast point multiplication with 4432 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult() 4433 will now compute a table of multiples of the generator that 4434 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul() 4435 faster (notably in the case of a single point multiplication, 4436 scalar * generator). 4437 [Nils Larsch, Bodo Moeller] 4438 4439 *) IPv6 support for certificate extensions. The various extensions 4440 which use the IP:a.b.c.d can now take IPv6 addresses using the 4441 formats of RFC1884 2.2 . IPv6 addresses are now also displayed 4442 correctly. 4443 [Steve Henson] 4444 4445 *) Added an ENGINE that implements RSA by performing private key 4446 exponentiations with the GMP library. The conversions to and from 4447 GMP's mpz_t format aren't optimised nor are any montgomery forms 4448 cached, and on x86 it appears OpenSSL's own performance has caught up. 4449 However there are likely to be other architectures where GMP could 4450 provide a boost. This ENGINE is not built in by default, but it can be 4451 specified at Configure time and should be accompanied by the necessary 4452 linker additions, eg; 4453 ./config -DOPENSSL_USE_GMP -lgmp 4454 [Geoff Thorpe] 4455 4456 *) "openssl engine" will not display ENGINE/DSO load failure errors when 4457 testing availability of engines with "-t" - the old behaviour is 4458 produced by increasing the feature's verbosity with "-tt". 4459 [Geoff Thorpe] 4460 4461 *) ECDSA routines: under certain error conditions uninitialized BN objects 4462 could be freed. Solution: make sure initialization is performed early 4463 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de> 4464 via PR#459) 4465 [Lutz Jaenicke] 4466 4467 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD 4468 and DH_METHOD (eg. by ENGINE implementations) to override the normal 4469 software implementations. For DSA and DH, parameter generation can 4470 also be overriden by providing the appropriate method callbacks. 4471 [Geoff Thorpe] 4472 4473 *) Change the "progress" mechanism used in key-generation and 4474 primality testing to functions that take a new BN_GENCB pointer in 4475 place of callback/argument pairs. The new API functions have "_ex" 4476 postfixes and the older functions are reimplemented as wrappers for 4477 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide 4478 declarations of the old functions to help (graceful) attempts to 4479 migrate to the new functions. Also, the new key-generation API 4480 functions operate on a caller-supplied key-structure and return 4481 success/failure rather than returning a key or NULL - this is to 4482 help make "keygen" another member function of RSA_METHOD etc. 4483 4484 Example for using the new callback interface: 4485 4486 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...; 4487 void *my_arg = ...; 4488 BN_GENCB my_cb; 4489 4490 BN_GENCB_set(&my_cb, my_callback, my_arg); 4491 4492 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb); 4493 /* For the meaning of a, b in calls to my_callback(), see the 4494 * documentation of the function that calls the callback. 4495 * cb will point to my_cb; my_arg can be retrieved as cb->arg. 4496 * my_callback should return 1 if it wants BN_is_prime_ex() 4497 * to continue, or 0 to stop. 4498 */ 4499 4500 [Geoff Thorpe] 4501 4502 *) Change the ZLIB compression method to be stateful, and make it 4503 available to TLS with the number defined in 4504 draft-ietf-tls-compression-04.txt. 4505 [Richard Levitte] 4506 4507 *) Add the ASN.1 structures and functions for CertificatePair, which 4508 is defined as follows (according to X.509_4thEditionDraftV6.pdf): 4509 4510 CertificatePair ::= SEQUENCE { 4511 forward [0] Certificate OPTIONAL, 4512 reverse [1] Certificate OPTIONAL, 4513 -- at least one of the pair shall be present -- } 4514 4515 Also implement the PEM functions to read and write certificate 4516 pairs, and defined the PEM tag as "CERTIFICATE PAIR". 4517 4518 This needed to be defined, mostly for the sake of the LDAP 4519 attribute crossCertificatePair, but may prove useful elsewhere as 4520 well. 4521 [Richard Levitte] 4522 4523 *) Make it possible to inhibit symlinking of shared libraries in 4524 Makefile.shared, for Cygwin's sake. 4525 [Richard Levitte] 4526 4527 *) Extend the BIGNUM API by creating a function 4528 void BN_set_negative(BIGNUM *a, int neg); 4529 and a macro that behave like 4530 int BN_is_negative(const BIGNUM *a); 4531 4532 to avoid the need to access 'a->neg' directly in applications. 4533 [Nils Larsch] 4534 4535 *) Implement fast modular reduction for pseudo-Mersenne primes 4536 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c). 4537 EC_GROUP_new_curve_GFp() will now automatically use this 4538 if applicable. 4539 [Nils Larsch <nla@trustcenter.de>] 4540 4541 *) Add new lock type (CRYPTO_LOCK_BN). 4542 [Bodo Moeller] 4543 4544 *) Change the ENGINE framework to automatically load engines 4545 dynamically from specific directories unless they could be 4546 found to already be built in or loaded. Move all the 4547 current engines except for the cryptodev one to a new 4548 directory engines/. 4549 The engines in engines/ are built as shared libraries if 4550 the "shared" options was given to ./Configure or ./config. 4551 Otherwise, they are inserted in libcrypto.a. 4552 /usr/local/ssl/engines is the default directory for dynamic 4553 engines, but that can be overriden at configure time through 4554 the usual use of --prefix and/or --openssldir, and at run 4555 time with the environment variable OPENSSL_ENGINES. 4556 [Geoff Thorpe and Richard Levitte] 4557 4558 *) Add Makefile.shared, a helper makefile to build shared 4559 libraries. Addapt Makefile.org. 4560 [Richard Levitte] 4561 4562 *) Add version info to Win32 DLLs. 4563 [Peter 'Luna' Runestig" <peter@runestig.com>] 4564 4565 *) Add new 'medium level' PKCS#12 API. Certificates and keys 4566 can be added using this API to created arbitrary PKCS#12 4567 files while avoiding the low level API. 4568 4569 New options to PKCS12_create(), key or cert can be NULL and 4570 will then be omitted from the output file. The encryption 4571 algorithm NIDs can be set to -1 for no encryption, the mac 4572 iteration count can be set to 0 to omit the mac. 4573 4574 Enhance pkcs12 utility by making the -nokeys and -nocerts 4575 options work when creating a PKCS#12 file. New option -nomac 4576 to omit the mac, NONE can be set for an encryption algorithm. 4577 New code is modified to use the enhanced PKCS12_create() 4578 instead of the low level API. 4579 [Steve Henson] 4580 4581 *) Extend ASN1 encoder to support indefinite length constructed 4582 encoding. This can output sequences tags and octet strings in 4583 this form. Modify pk7_asn1.c to support indefinite length 4584 encoding. This is experimental and needs additional code to 4585 be useful, such as an ASN1 bio and some enhanced streaming 4586 PKCS#7 code. 4587 4588 Extend template encode functionality so that tagging is passed 4589 down to the template encoder. 4590 [Steve Henson] 4591 4592 *) Let 'openssl req' fail if an argument to '-newkey' is not 4593 recognized instead of using RSA as a default. 4594 [Bodo Moeller] 4595 4596 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt. 4597 As these are not official, they are not included in "ALL"; 4598 the "ECCdraft" ciphersuite group alias can be used to select them. 4599 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)] 4600 4601 *) Add ECDH engine support. 4602 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)] 4603 4604 *) Add ECDH in new directory crypto/ecdh/. 4605 [Douglas Stebila (Sun Microsystems Laboratories)] 4606 4607 *) Let BN_rand_range() abort with an error after 100 iterations 4608 without success (which indicates a broken PRNG). 4609 [Bodo Moeller] 4610 4611 *) Change BN_mod_sqrt() so that it verifies that the input value 4612 is really the square of the return value. (Previously, 4613 BN_mod_sqrt would show GIGO behaviour.) 4614 [Bodo Moeller] 4615 4616 *) Add named elliptic curves over binary fields from X9.62, SECG, 4617 and WAP/WTLS; add OIDs that were still missing. 4618 4619 [Sheueling Chang Shantz and Douglas Stebila 4620 (Sun Microsystems Laboratories)] 4621 4622 *) Extend the EC library for elliptic curves over binary fields 4623 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/). 4624 New EC_METHOD: 4625 4626 EC_GF2m_simple_method 4627 4628 New API functions: 4629 4630 EC_GROUP_new_curve_GF2m 4631 EC_GROUP_set_curve_GF2m 4632 EC_GROUP_get_curve_GF2m 4633 EC_POINT_set_affine_coordinates_GF2m 4634 EC_POINT_get_affine_coordinates_GF2m 4635 EC_POINT_set_compressed_coordinates_GF2m 4636 4637 Point compression for binary fields is disabled by default for 4638 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to 4639 enable it). 4640 4641 As binary polynomials are represented as BIGNUMs, various members 4642 of the EC_GROUP and EC_POINT data structures can be shared 4643 between the implementations for prime fields and binary fields; 4644 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m) 4645 are essentially identical to their ..._GFp counterparts. 4646 (For simplicity, the '..._GFp' prefix has been dropped from 4647 various internal method names.) 4648 4649 An internal 'field_div' method (similar to 'field_mul' and 4650 'field_sqr') has been added; this is used only for binary fields. 4651 4652 [Sheueling Chang Shantz and Douglas Stebila 4653 (Sun Microsystems Laboratories)] 4654 4655 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult() 4656 through methods ('mul', 'precompute_mult'). 4657 4658 The generic implementations (now internally called 'ec_wNAF_mul' 4659 and 'ec_wNAF_precomputed_mult') remain the default if these 4660 methods are undefined. 4661 4662 [Sheueling Chang Shantz and Douglas Stebila 4663 (Sun Microsystems Laboratories)] 4664 4665 *) New function EC_GROUP_get_degree, which is defined through 4666 EC_METHOD. For curves over prime fields, this returns the bit 4667 length of the modulus. 4668 4669 [Sheueling Chang Shantz and Douglas Stebila 4670 (Sun Microsystems Laboratories)] 4671 4672 *) New functions EC_GROUP_dup, EC_POINT_dup. 4673 (These simply call ..._new and ..._copy). 4674 4675 [Sheueling Chang Shantz and Douglas Stebila 4676 (Sun Microsystems Laboratories)] 4677 4678 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c. 4679 Polynomials are represented as BIGNUMs (where the sign bit is not 4680 used) in the following functions [macros]: 4681 4682 BN_GF2m_add 4683 BN_GF2m_sub [= BN_GF2m_add] 4684 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr] 4685 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr] 4686 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr] 4687 BN_GF2m_mod_inv 4688 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr] 4689 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr] 4690 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr] 4691 BN_GF2m_cmp [= BN_ucmp] 4692 4693 (Note that only the 'mod' functions are actually for fields GF(2^m). 4694 BN_GF2m_add() is misnomer, but this is for the sake of consistency.) 4695 4696 For some functions, an the irreducible polynomial defining a 4697 field can be given as an 'unsigned int[]' with strictly 4698 decreasing elements giving the indices of those bits that are set; 4699 i.e., p[] represents the polynomial 4700 f(t) = t^p[0] + t^p[1] + ... + t^p[k] 4701 where 4702 p[0] > p[1] > ... > p[k] = 0. 4703 This applies to the following functions: 4704 4705 BN_GF2m_mod_arr 4706 BN_GF2m_mod_mul_arr 4707 BN_GF2m_mod_sqr_arr 4708 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv] 4709 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div] 4710 BN_GF2m_mod_exp_arr 4711 BN_GF2m_mod_sqrt_arr 4712 BN_GF2m_mod_solve_quad_arr 4713 BN_GF2m_poly2arr 4714 BN_GF2m_arr2poly 4715 4716 Conversion can be performed by the following functions: 4717 4718 BN_GF2m_poly2arr 4719 BN_GF2m_arr2poly 4720 4721 bntest.c has additional tests for binary polynomial arithmetic. 4722 4723 Two implementations for BN_GF2m_mod_div() are available. 4724 The default algorithm simply uses BN_GF2m_mod_inv() and 4725 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only 4726 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the 4727 copyright notice in crypto/bn/bn_gf2m.c before enabling it). 4728 4729 [Sheueling Chang Shantz and Douglas Stebila 4730 (Sun Microsystems Laboratories)] 4731 4732 *) Add new error code 'ERR_R_DISABLED' that can be used when some 4733 functionality is disabled at compile-time. 4734 [Douglas Stebila <douglas.stebila@sun.com>] 4735 4736 *) Change default behaviour of 'openssl asn1parse' so that more 4737 information is visible when viewing, e.g., a certificate: 4738 4739 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump' 4740 mode the content of non-printable OCTET STRINGs is output in a 4741 style similar to INTEGERs, but with '[HEX DUMP]' prepended to 4742 avoid the appearance of a printable string. 4743 [Nils Larsch <nla@trustcenter.de>] 4744 4745 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access 4746 functions 4747 EC_GROUP_set_asn1_flag() 4748 EC_GROUP_get_asn1_flag() 4749 EC_GROUP_set_point_conversion_form() 4750 EC_GROUP_get_point_conversion_form() 4751 These control ASN1 encoding details: 4752 - Curves (i.e., groups) are encoded explicitly unless asn1_flag 4753 has been set to OPENSSL_EC_NAMED_CURVE. 4754 - Points are encoded in uncompressed form by default; options for 4755 asn1_for are as for point2oct, namely 4756 POINT_CONVERSION_COMPRESSED 4757 POINT_CONVERSION_UNCOMPRESSED 4758 POINT_CONVERSION_HYBRID 4759 4760 Also add 'seed' and 'seed_len' members to EC_GROUP with access 4761 functions 4762 EC_GROUP_set_seed() 4763 EC_GROUP_get0_seed() 4764 EC_GROUP_get_seed_len() 4765 This is used only for ASN1 purposes (so far). 4766 [Nils Larsch <nla@trustcenter.de>] 4767 4768 *) Add 'field_type' member to EC_METHOD, which holds the NID 4769 of the appropriate field type OID. The new function 4770 EC_METHOD_get_field_type() returns this value. 4771 [Nils Larsch <nla@trustcenter.de>] 4772 4773 *) Add functions 4774 EC_POINT_point2bn() 4775 EC_POINT_bn2point() 4776 EC_POINT_point2hex() 4777 EC_POINT_hex2point() 4778 providing useful interfaces to EC_POINT_point2oct() and 4779 EC_POINT_oct2point(). 4780 [Nils Larsch <nla@trustcenter.de>] 4781 4782 *) Change internals of the EC library so that the functions 4783 EC_GROUP_set_generator() 4784 EC_GROUP_get_generator() 4785 EC_GROUP_get_order() 4786 EC_GROUP_get_cofactor() 4787 are implemented directly in crypto/ec/ec_lib.c and not dispatched 4788 to methods, which would lead to unnecessary code duplication when 4789 adding different types of curves. 4790 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller] 4791 4792 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM 4793 arithmetic, and such that modified wNAFs are generated 4794 (which avoid length expansion in many cases). 4795 [Bodo Moeller] 4796 4797 *) Add a function EC_GROUP_check_discriminant() (defined via 4798 EC_METHOD) that verifies that the curve discriminant is non-zero. 4799 4800 Add a function EC_GROUP_check() that makes some sanity tests 4801 on a EC_GROUP, its generator and order. This includes 4802 EC_GROUP_check_discriminant(). 4803 [Nils Larsch <nla@trustcenter.de>] 4804 4805 *) Add ECDSA in new directory crypto/ecdsa/. 4806 4807 Add applications 'openssl ecparam' and 'openssl ecdsa' 4808 (these are based on 'openssl dsaparam' and 'openssl dsa'). 4809 4810 ECDSA support is also included in various other files across the 4811 library. Most notably, 4812 - 'openssl req' now has a '-newkey ecdsa:file' option; 4813 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA; 4814 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and 4815 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make 4816 them suitable for ECDSA where domain parameters must be 4817 extracted before the specific public key; 4818 - ECDSA engine support has been added. 4819 [Nils Larsch <nla@trustcenter.de>] 4820 4821 *) Include some named elliptic curves, and add OIDs from X9.62, 4822 SECG, and WAP/WTLS. Each curve can be obtained from the new 4823 function 4824 EC_GROUP_new_by_curve_name(), 4825 and the list of available named curves can be obtained with 4826 EC_get_builtin_curves(). 4827 Also add a 'curve_name' member to EC_GROUP objects, which can be 4828 accessed via 4829 EC_GROUP_set_curve_name() 4830 EC_GROUP_get_curve_name() 4831 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller] 4832 4833 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there 4834 was actually never needed) and in BN_mul(). The removal in BN_mul() 4835 required a small change in bn_mul_part_recursive() and the addition 4836 of the functions bn_cmp_part_words(), bn_sub_part_words() and 4837 bn_add_part_words(), which do the same thing as bn_cmp_words(), 4838 bn_sub_words() and bn_add_words() except they take arrays with 4839 differing sizes. 4840 [Richard Levitte] 4841 4842 Changes between 0.9.7l and 0.9.7m [23 Feb 2007] 4843 4844 *) Cleanse PEM buffers before freeing them since they may contain 4845 sensitive data. 4846 [Benjamin Bennett <ben@psc.edu>] 4847 4848 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that 4849 a ciphersuite string such as "DEFAULT:RSA" cannot enable 4850 authentication-only ciphersuites. 4851 [Bodo Moeller] 4852 4853 *) Since AES128 and AES256 share a single mask bit in the logic of 4854 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a 4855 kludge to work properly if AES128 is available and AES256 isn't. 4856 [Victor Duchovni] 4857 4858 *) Expand security boundary to match 1.1.1 module. 4859 [Steve Henson] 4860 4861 *) Remove redundant features: hash file source, editing of test vectors 4862 modify fipsld to use external fips_premain.c signature. 4863 [Steve Henson] 4864 4865 *) New perl script mkfipsscr.pl to create shell scripts or batch files to 4866 run algorithm test programs. 4867 [Steve Henson] 4868 4869 *) Make algorithm test programs more tolerant of whitespace. 4870 [Steve Henson] 4871 4872 *) Have SSL/TLS server implementation tolerate "mismatched" record 4873 protocol version while receiving ClientHello even if the 4874 ClientHello is fragmented. (The server can't insist on the 4875 particular protocol version it has chosen before the ServerHello 4876 message has informed the client about his choice.) 4877 [Bodo Moeller] 4878 4879 *) Load error codes if they are not already present instead of using a 4880 static variable. This allows them to be cleanly unloaded and reloaded. 4881 [Steve Henson] 4882 4883 Changes between 0.9.7k and 0.9.7l [28 Sep 2006] 4884 4885 *) Introduce limits to prevent malicious keys being able to 4886 cause a denial of service. (CVE-2006-2940) 4887 [Steve Henson, Bodo Moeller] 4888 4889 *) Fix ASN.1 parsing of certain invalid structures that can result 4890 in a denial of service. (CVE-2006-2937) [Steve Henson] 4891 4892 *) Fix buffer overflow in SSL_get_shared_ciphers() function. 4893 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] 4894 4895 *) Fix SSL client code which could crash if connecting to a 4896 malicious SSLv2 server. (CVE-2006-4343) 4897 [Tavis Ormandy and Will Drewry, Google Security Team] 4898 4899 *) Change ciphersuite string processing so that an explicit 4900 ciphersuite selects this one ciphersuite (so that "AES256-SHA" 4901 will no longer include "AES128-SHA"), and any other similar 4902 ciphersuite (same bitmap) from *other* protocol versions (so that 4903 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the 4904 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining 4905 changes from 0.9.8b and 0.9.8d. 4906 [Bodo Moeller] 4907 4908 Changes between 0.9.7j and 0.9.7k [05 Sep 2006] 4909 4910 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher 4911 (CVE-2006-4339) [Ben Laurie and Google Security Team] 4912 4913 *) Change the Unix randomness entropy gathering to use poll() when 4914 possible instead of select(), since the latter has some 4915 undesirable limitations. 4916 [Darryl Miles via Richard Levitte and Bodo Moeller] 4917 4918 *) Disable rogue ciphersuites: 4919 4920 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") 4921 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") 4922 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") 4923 4924 The latter two were purportedly from 4925 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really 4926 appear there. 4927 4928 Also deactive the remaining ciphersuites from 4929 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as 4930 unofficial, and the ID has long expired. 4931 [Bodo Moeller] 4932 4933 *) Fix RSA blinding Heisenbug (problems sometimes occured on 4934 dual-core machines) and other potential thread-safety issues. 4935 [Bodo Moeller] 4936 4937 Changes between 0.9.7i and 0.9.7j [04 May 2006] 4938 4939 *) Adapt fipsld and the build system to link against the validated FIPS 4940 module in FIPS mode. 4941 [Steve Henson] 4942 4943 *) Fixes for VC++ 2005 build under Windows. 4944 [Steve Henson] 4945 4946 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make 4947 from a Windows bash shell such as MSYS. It is autodetected from the 4948 "config" script when run from a VC++ environment. Modify standard VC++ 4949 build to use fipscanister.o from the GNU make build. 4950 [Steve Henson] 4951 4952 Changes between 0.9.7h and 0.9.7i [14 Oct 2005] 4953 4954 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS. 4955 The value now differs depending on if you build for FIPS or not. 4956 BEWARE! A program linked with a shared FIPSed libcrypto can't be 4957 safely run with a non-FIPSed libcrypto, as it may crash because of 4958 the difference induced by this change. 4959 [Andy Polyakov] 4960 4961 Changes between 0.9.7g and 0.9.7h [11 Oct 2005] 4962 4963 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING 4964 (part of SSL_OP_ALL). This option used to disable the 4965 countermeasure against man-in-the-middle protocol-version 4966 rollback in the SSL 2.0 server implementation, which is a bad 4967 idea. (CVE-2005-2969) 4968 4969 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center 4970 for Information Security, National Institute of Advanced Industrial 4971 Science and Technology [AIST], Japan)] 4972 4973 *) Minimal support for X9.31 signatures and PSS padding modes. This is 4974 mainly for FIPS compliance and not fully integrated at this stage. 4975 [Steve Henson] 4976 4977 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform 4978 the exponentiation using a fixed-length exponent. (Otherwise, 4979 the information leaked through timing could expose the secret key 4980 after many signatures; cf. Bleichenbacher's attack on DSA with 4981 biased k.) 4982 [Bodo Moeller] 4983 4984 *) Make a new fixed-window mod_exp implementation the default for 4985 RSA, DSA, and DH private-key operations so that the sequence of 4986 squares and multiplies and the memory access pattern are 4987 independent of the particular secret key. This will mitigate 4988 cache-timing and potential related attacks. 4989 4990 BN_mod_exp_mont_consttime() is the new exponentiation implementation, 4991 and this is automatically used by BN_mod_exp_mont() if the new flag 4992 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH 4993 will use this BN flag for private exponents unless the flag 4994 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or 4995 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set. 4996 4997 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller] 4998 4999 *) Change the client implementation for SSLv23_method() and 5000 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0 5001 Client Hello message format if the SSL_OP_NO_SSLv2 option is set. 5002 (Previously, the SSL 2.0 backwards compatible Client Hello 5003 message format would be used even with SSL_OP_NO_SSLv2.) 5004 [Bodo Moeller] 5005 5006 *) Add support for smime-type MIME parameter in S/MIME messages which some 5007 clients need. 5008 [Steve Henson] 5009 5010 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in 5011 a threadsafe manner. Modify rsa code to use new function and add calls 5012 to dsa and dh code (which had race conditions before). 5013 [Steve Henson] 5014 5015 *) Include the fixed error library code in the C error file definitions 5016 instead of fixing them up at runtime. This keeps the error code 5017 structures constant. 5018 [Steve Henson] 5019 5020 Changes between 0.9.7f and 0.9.7g [11 Apr 2005] 5021 5022 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after 5023 OpenSSL 0.9.8.] 5024 5025 *) Fixes for newer kerberos headers. NB: the casts are needed because 5026 the 'length' field is signed on one version and unsigned on another 5027 with no (?) obvious way to tell the difference, without these VC++ 5028 complains. Also the "definition" of FAR (blank) is no longer included 5029 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up 5030 some needed definitions. 5031 [Steve Henson] 5032 5033 *) Undo Cygwin change. 5034 [Ulf M��ller] 5035 5036 *) Added support for proxy certificates according to RFC 3820. 5037 Because they may be a security thread to unaware applications, 5038 they must be explicitely allowed in run-time. See 5039 docs/HOWTO/proxy_certificates.txt for further information. 5040 [Richard Levitte] 5041 5042 Changes between 0.9.7e and 0.9.7f [22 Mar 2005] 5043 5044 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating 5045 server and client random values. Previously 5046 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in 5047 less random data when sizeof(time_t) > 4 (some 64 bit platforms). 5048 5049 This change has negligible security impact because: 5050 5051 1. Server and client random values still have 24 bytes of pseudo random 5052 data. 5053 5054 2. Server and client random values are sent in the clear in the initial 5055 handshake. 5056 5057 3. The master secret is derived using the premaster secret (48 bytes in 5058 size for static RSA ciphersuites) as well as client server and random 5059 values. 5060 5061 The OpenSSL team would like to thank the UK NISCC for bringing this issue 5062 to our attention. 5063 5064 [Stephen Henson, reported by UK NISCC] 5065 5066 *) Use Windows randomness collection on Cygwin. 5067 [Ulf M��ller] 5068 5069 *) Fix hang in EGD/PRNGD query when communication socket is closed 5070 prematurely by EGD/PRNGD. 5071 [Darren Tucker <dtucker@zip.com.au> via Lutz J��nicke, resolves #1014] 5072 5073 *) Prompt for pass phrases when appropriate for PKCS12 input format. 5074 [Steve Henson] 5075 5076 *) Back-port of selected performance improvements from development 5077 branch, as well as improved support for PowerPC platforms. 5078 [Andy Polyakov] 5079 5080 *) Add lots of checks for memory allocation failure, error codes to indicate 5081 failure and freeing up memory if a failure occurs. 5082 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson] 5083 5084 *) Add new -passin argument to dgst. 5085 [Steve Henson] 5086 5087 *) Perform some character comparisons of different types in X509_NAME_cmp: 5088 this is needed for some certificates that reencode DNs into UTF8Strings 5089 (in violation of RFC3280) and can't or wont issue name rollover 5090 certificates. 5091 [Steve Henson] 5092 5093 *) Make an explicit check during certificate validation to see that 5094 the CA setting in each certificate on the chain is correct. As a 5095 side effect always do the following basic checks on extensions, 5096 not just when there's an associated purpose to the check: 5097 5098 - if there is an unhandled critical extension (unless the user 5099 has chosen to ignore this fault) 5100 - if the path length has been exceeded (if one is set at all) 5101 - that certain extensions fit the associated purpose (if one has 5102 been given) 5103 [Richard Levitte] 5104 5105 Changes between 0.9.7d and 0.9.7e [25 Oct 2004] 5106 5107 *) Avoid a race condition when CRLs are checked in a multi threaded 5108 environment. This would happen due to the reordering of the revoked 5109 entries during signature checking and serial number lookup. Now the 5110 encoding is cached and the serial number sort performed under a lock. 5111 Add new STACK function sk_is_sorted(). 5112 [Steve Henson] 5113 5114 *) Add Delta CRL to the extension code. 5115 [Steve Henson] 5116 5117 *) Various fixes to s3_pkt.c so alerts are sent properly. 5118 [David Holmes <d.holmes@f5.com>] 5119 5120 *) Reduce the chances of duplicate issuer name and serial numbers (in 5121 violation of RFC3280) using the OpenSSL certificate creation utilities. 5122 This is done by creating a random 64 bit value for the initial serial 5123 number when a serial number file is created or when a self signed 5124 certificate is created using 'openssl req -x509'. The initial serial 5125 number file is created using 'openssl x509 -next_serial' in CA.pl 5126 rather than being initialized to 1. 5127 [Steve Henson] 5128 5129 Changes between 0.9.7c and 0.9.7d [17 Mar 2004] 5130 5131 *) Fix null-pointer assignment in do_change_cipher_spec() revealed 5132 by using the Codenomicon TLS Test Tool (CVE-2004-0079) 5133 [Joe Orton, Steve Henson] 5134 5135 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites 5136 (CVE-2004-0112) 5137 [Joe Orton, Steve Henson] 5138 5139 *) Make it possible to have multiple active certificates with the same 5140 subject in the CA index file. This is done only if the keyword 5141 'unique_subject' is set to 'no' in the main CA section (default 5142 if 'CA_default') of the configuration file. The value is saved 5143 with the database itself in a separate index attribute file, 5144 named like the index file with '.attr' appended to the name. 5145 [Richard Levitte] 5146 5147 *) X509 verify fixes. Disable broken certificate workarounds when 5148 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if 5149 keyUsage extension present. Don't accept CRLs with unhandled critical 5150 extensions: since verify currently doesn't process CRL extensions this 5151 rejects a CRL with *any* critical extensions. Add new verify error codes 5152 for these cases. 5153 [Steve Henson] 5154 5155 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue. 5156 A clarification of RFC2560 will require the use of OCTET STRINGs and 5157 some implementations cannot handle the current raw format. Since OpenSSL 5158 copies and compares OCSP nonces as opaque blobs without any attempt at 5159 parsing them this should not create any compatibility issues. 5160 [Steve Henson] 5161 5162 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when 5163 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without 5164 this HMAC (and other) operations are several times slower than OpenSSL 5165 < 0.9.7. 5166 [Steve Henson] 5167 5168 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex(). 5169 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>] 5170 5171 *) Use the correct content when signing type "other". 5172 [Steve Henson] 5173 5174 Changes between 0.9.7b and 0.9.7c [30 Sep 2003] 5175 5176 *) Fix various bugs revealed by running the NISCC test suite: 5177 5178 Stop out of bounds reads in the ASN1 code when presented with 5179 invalid tags (CVE-2003-0543 and CVE-2003-0544). 5180 5181 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545). 5182 5183 If verify callback ignores invalid public key errors don't try to check 5184 certificate signature with the NULL public key. 5185 5186 [Steve Henson] 5187 5188 *) New -ignore_err option in ocsp application to stop the server 5189 exiting on the first error in a request. 5190 [Steve Henson] 5191 5192 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate 5193 if the server requested one: as stated in TLS 1.0 and SSL 3.0 5194 specifications. 5195 [Steve Henson] 5196 5197 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional 5198 extra data after the compression methods not only for TLS 1.0 5199 but also for SSL 3.0 (as required by the specification). 5200 [Bodo Moeller; problem pointed out by Matthias Loepfe] 5201 5202 *) Change X509_certificate_type() to mark the key as exported/exportable 5203 when it's 512 *bits* long, not 512 bytes. 5204 [Richard Levitte] 5205 5206 *) Change AES_cbc_encrypt() so it outputs exact multiple of 5207 blocks during encryption. 5208 [Richard Levitte] 5209 5210 *) Various fixes to base64 BIO and non blocking I/O. On write 5211 flushes were not handled properly if the BIO retried. On read 5212 data was not being buffered properly and had various logic bugs. 5213 This also affects blocking I/O when the data being decoded is a 5214 certain size. 5215 [Steve Henson] 5216 5217 *) Various S/MIME bugfixes and compatibility changes: 5218 output correct application/pkcs7 MIME type if 5219 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures. 5220 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening 5221 of files as .eml work). Correctly handle very long lines in MIME 5222 parser. 5223 [Steve Henson] 5224 5225 Changes between 0.9.7a and 0.9.7b [10 Apr 2003] 5226 5227 *) Countermeasure against the Klima-Pokorny-Rosa extension of 5228 Bleichbacher's attack on PKCS #1 v1.5 padding: treat 5229 a protocol version number mismatch like a decryption error 5230 in ssl3_get_client_key_exchange (ssl/s3_srvr.c). 5231 [Bodo Moeller] 5232 5233 *) Turn on RSA blinding by default in the default implementation 5234 to avoid a timing attack. Applications that don't want it can call 5235 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. 5236 They would be ill-advised to do so in most cases. 5237 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] 5238 5239 *) Change RSA blinding code so that it works when the PRNG is not 5240 seeded (in this case, the secret RSA exponent is abused as 5241 an unpredictable seed -- if it is not unpredictable, there 5242 is no point in blinding anyway). Make RSA blinding thread-safe 5243 by remembering the creator's thread ID in rsa->blinding and 5244 having all other threads use local one-time blinding factors 5245 (this requires more computation than sharing rsa->blinding, but 5246 avoids excessive locking; and if an RSA object is not shared 5247 between threads, blinding will still be very fast). 5248 [Bodo Moeller] 5249 5250 *) Fixed a typo bug that would cause ENGINE_set_default() to set an 5251 ENGINE as defaults for all supported algorithms irrespective of 5252 the 'flags' parameter. 'flags' is now honoured, so applications 5253 should make sure they are passing it correctly. 5254 [Geoff Thorpe] 5255 5256 *) Target "mingw" now allows native Windows code to be generated in 5257 the Cygwin environment as well as with the MinGW compiler. 5258 [Ulf Moeller] 5259 5260 Changes between 0.9.7 and 0.9.7a [19 Feb 2003] 5261 5262 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked 5263 via timing by performing a MAC computation even if incorrrect 5264 block cipher padding has been found. This is a countermeasure 5265 against active attacks where the attacker has to distinguish 5266 between bad padding and a MAC verification error. (CVE-2003-0078) 5267 5268 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), 5269 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and 5270 Martin Vuagnoux (EPFL, Ilion)] 5271 5272 *) Make the no-err option work as intended. The intention with no-err 5273 is not to have the whole error stack handling routines removed from 5274 libcrypto, it's only intended to remove all the function name and 5275 reason texts, thereby removing some of the footprint that may not 5276 be interesting if those errors aren't displayed anyway. 5277 5278 NOTE: it's still possible for any application or module to have it's 5279 own set of error texts inserted. The routines are there, just not 5280 used by default when no-err is given. 5281 [Richard Levitte] 5282 5283 *) Add support for FreeBSD on IA64. 5284 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454] 5285 5286 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT 5287 Kerberos function mit_des_cbc_cksum(). Before this change, 5288 the value returned by DES_cbc_cksum() was like the one from 5289 mit_des_cbc_cksum(), except the bytes were swapped. 5290 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte] 5291 5292 *) Allow an application to disable the automatic SSL chain building. 5293 Before this a rather primitive chain build was always performed in 5294 ssl3_output_cert_chain(): an application had no way to send the 5295 correct chain if the automatic operation produced an incorrect result. 5296 5297 Now the chain builder is disabled if either: 5298 5299 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert(). 5300 5301 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set. 5302 5303 The reasoning behind this is that an application would not want the 5304 auto chain building to take place if extra chain certificates are 5305 present and it might also want a means of sending no additional 5306 certificates (for example the chain has two certificates and the 5307 root is omitted). 5308 [Steve Henson] 5309 5310 *) Add the possibility to build without the ENGINE framework. 5311 [Steven Reddie <smr@essemer.com.au> via Richard Levitte] 5312 5313 *) Under Win32 gmtime() can return NULL: check return value in 5314 OPENSSL_gmtime(). Add error code for case where gmtime() fails. 5315 [Steve Henson] 5316 5317 *) DSA routines: under certain error conditions uninitialized BN objects 5318 could be freed. Solution: make sure initialization is performed early 5319 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>, 5320 Nils Larsch <nla@trustcenter.de> via PR#459) 5321 [Lutz Jaenicke] 5322 5323 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly 5324 checked on reconnect on the client side, therefore session resumption 5325 could still fail with a "ssl session id is different" error. This 5326 behaviour is masked when SSL_OP_ALL is used due to 5327 SSL_OP_MICROSOFT_SESS_ID_BUG being set. 5328 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as 5329 followup to PR #377. 5330 [Lutz Jaenicke] 5331 5332 *) IA-32 assembler support enhancements: unified ELF targets, support 5333 for SCO/Caldera platforms, fix for Cygwin shared build. 5334 [Andy Polyakov] 5335 5336 *) Add support for FreeBSD on sparc64. As a consequence, support for 5337 FreeBSD on non-x86 processors is separate from x86 processors on 5338 the config script, much like the NetBSD support. 5339 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>] 5340 5341 Changes between 0.9.6h and 0.9.7 [31 Dec 2002] 5342 5343 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after 5344 OpenSSL 0.9.7.] 5345 5346 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED 5347 code (06) was taken as the first octet of the session ID and the last 5348 octet was ignored consequently. As a result SSLv2 client side session 5349 caching could not have worked due to the session ID mismatch between 5350 client and server. 5351 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as 5352 PR #377. 5353 [Lutz Jaenicke] 5354 5355 *) Change the declaration of needed Kerberos libraries to use EX_LIBS 5356 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is 5357 removed entirely. 5358 [Richard Levitte] 5359 5360 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it 5361 seems that in spite of existing for more than a year, many application 5362 author have done nothing to provide the necessary callbacks, which 5363 means that this particular engine will not work properly anywhere. 5364 This is a very unfortunate situation which forces us, in the name 5365 of usability, to give the hw_ncipher.c a static lock, which is part 5366 of libcrypto. 5367 NOTE: This is for the 0.9.7 series ONLY. This hack will never 5368 appear in 0.9.8 or later. We EXPECT application authors to have 5369 dealt properly with this when 0.9.8 is released (unless we actually 5370 make such changes in the libcrypto locking code that changes will 5371 have to be made anyway). 5372 [Richard Levitte] 5373 5374 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content 5375 octets have been read, EOF or an error occurs. Without this change 5376 some truncated ASN1 structures will not produce an error. 5377 [Steve Henson] 5378 5379 *) Disable Heimdal support, since it hasn't been fully implemented. 5380 Still give the possibility to force the use of Heimdal, but with 5381 warnings and a request that patches get sent to openssl-dev. 5382 [Richard Levitte] 5383 5384 *) Add the VC-CE target, introduce the WINCE sysname, and add 5385 INSTALL.WCE and appropriate conditionals to make it build. 5386 [Steven Reddie <smr@essemer.com.au> via Richard Levitte] 5387 5388 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and 5389 cygssl-x.y.z.dll, where x, y and z are the major, minor and 5390 edit numbers of the version. 5391 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte] 5392 5393 *) Introduce safe string copy and catenation functions 5394 (BUF_strlcpy() and BUF_strlcat()). 5395 [Ben Laurie (CHATS) and Richard Levitte] 5396 5397 *) Avoid using fixed-size buffers for one-line DNs. 5398 [Ben Laurie (CHATS)] 5399 5400 *) Add BUF_MEM_grow_clean() to avoid information leakage when 5401 resizing buffers containing secrets, and use where appropriate. 5402 [Ben Laurie (CHATS)] 5403 5404 *) Avoid using fixed size buffers for configuration file location. 5405 [Ben Laurie (CHATS)] 5406 5407 *) Avoid filename truncation for various CA files. 5408 [Ben Laurie (CHATS)] 5409 5410 *) Use sizeof in preference to magic numbers. 5411 [Ben Laurie (CHATS)] 5412 5413 *) Avoid filename truncation in cert requests. 5414 [Ben Laurie (CHATS)] 5415 5416 *) Add assertions to check for (supposedly impossible) buffer 5417 overflows. 5418 [Ben Laurie (CHATS)] 5419 5420 *) Don't cache truncated DNS entries in the local cache (this could 5421 potentially lead to a spoofing attack). 5422 [Ben Laurie (CHATS)] 5423 5424 *) Fix various buffers to be large enough for hex/decimal 5425 representations in a platform independent manner. 5426 [Ben Laurie (CHATS)] 5427 5428 *) Add CRYPTO_realloc_clean() to avoid information leakage when 5429 resizing buffers containing secrets, and use where appropriate. 5430 [Ben Laurie (CHATS)] 5431 5432 *) Add BIO_indent() to avoid much slightly worrying code to do 5433 indents. 5434 [Ben Laurie (CHATS)] 5435 5436 *) Convert sprintf()/BIO_puts() to BIO_printf(). 5437 [Ben Laurie (CHATS)] 5438 5439 *) buffer_gets() could terminate with the buffer only half 5440 full. Fixed. 5441 [Ben Laurie (CHATS)] 5442 5443 *) Add assertions to prevent user-supplied crypto functions from 5444 overflowing internal buffers by having large block sizes, etc. 5445 [Ben Laurie (CHATS)] 5446 5447 *) New OPENSSL_assert() macro (similar to assert(), but enabled 5448 unconditionally). 5449 [Ben Laurie (CHATS)] 5450 5451 *) Eliminate unused copy of key in RC4. 5452 [Ben Laurie (CHATS)] 5453 5454 *) Eliminate unused and incorrectly sized buffers for IV in pem.h. 5455 [Ben Laurie (CHATS)] 5456 5457 *) Fix off-by-one error in EGD path. 5458 [Ben Laurie (CHATS)] 5459 5460 *) If RANDFILE path is too long, ignore instead of truncating. 5461 [Ben Laurie (CHATS)] 5462 5463 *) Eliminate unused and incorrectly sized X.509 structure 5464 CBCParameter. 5465 [Ben Laurie (CHATS)] 5466 5467 *) Eliminate unused and dangerous function knumber(). 5468 [Ben Laurie (CHATS)] 5469 5470 *) Eliminate unused and dangerous structure, KSSL_ERR. 5471 [Ben Laurie (CHATS)] 5472 5473 *) Protect against overlong session ID context length in an encoded 5474 session object. Since these are local, this does not appear to be 5475 exploitable. 5476 [Ben Laurie (CHATS)] 5477 5478 *) Change from security patch (see 0.9.6e below) that did not affect 5479 the 0.9.6 release series: 5480 5481 Remote buffer overflow in SSL3 protocol - an attacker could 5482 supply an oversized master key in Kerberos-enabled versions. 5483 (CVE-2002-0657) 5484 [Ben Laurie (CHATS)] 5485 5486 *) Change the SSL kerb5 codes to match RFC 2712. 5487 [Richard Levitte] 5488 5489 *) Make -nameopt work fully for req and add -reqopt switch. 5490 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson] 5491 5492 *) The "block size" for block ciphers in CFB and OFB mode should be 1. 5493 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>] 5494 5495 *) Make sure tests can be performed even if the corresponding algorithms 5496 have been removed entirely. This was also the last step to make 5497 OpenSSL compilable with DJGPP under all reasonable conditions. 5498 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>] 5499 5500 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT 5501 to allow version independent disabling of normally unselected ciphers, 5502 which may be activated as a side-effect of selecting a single cipher. 5503 5504 (E.g., cipher list string "RSA" enables ciphersuites that are left 5505 out of "ALL" because they do not provide symmetric encryption. 5506 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.) 5507 [Lutz Jaenicke, Bodo Moeller] 5508 5509 *) Add appropriate support for separate platform-dependent build 5510 directories. The recommended way to make a platform-dependent 5511 build directory is the following (tested on Linux), maybe with 5512 some local tweaks: 5513 5514 # Place yourself outside of the OpenSSL source tree. In 5515 # this example, the environment variable OPENSSL_SOURCE 5516 # is assumed to contain the absolute OpenSSL source directory. 5517 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`" 5518 cd objtree/"`uname -s`-`uname -r`-`uname -m`" 5519 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do 5520 mkdir -p `dirname $F` 5521 ln -s $OPENSSL_SOURCE/$F $F 5522 done 5523 5524 To be absolutely sure not to disturb the source tree, a "make clean" 5525 is a good thing. If it isn't successfull, don't worry about it, 5526 it probably means the source directory is very clean. 5527 [Richard Levitte] 5528 5529 *) Make sure any ENGINE control commands make local copies of string 5530 pointers passed to them whenever necessary. Otherwise it is possible 5531 the caller may have overwritten (or deallocated) the original string 5532 data when a later ENGINE operation tries to use the stored values. 5533 [G��tz Babin-Ebell <babinebell@trustcenter.de>] 5534 5535 *) Improve diagnostics in file reading and command-line digests. 5536 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>] 5537 5538 *) Add AES modes CFB and OFB to the object database. Correct an 5539 error in AES-CFB decryption. 5540 [Richard Levitte] 5541 5542 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this 5543 allows existing EVP_CIPHER_CTX structures to be reused after 5544 calling EVP_*Final(). This behaviour is used by encryption 5545 BIOs and some applications. This has the side effect that 5546 applications must explicitly clean up cipher contexts with 5547 EVP_CIPHER_CTX_cleanup() or they will leak memory. 5548 [Steve Henson] 5549 5550 *) Check the values of dna and dnb in bn_mul_recursive before calling 5551 bn_mul_comba (a non zero value means the a or b arrays do not contain 5552 n2 elements) and fallback to bn_mul_normal if either is not zero. 5553 [Steve Henson] 5554 5555 *) Fix escaping of non-ASCII characters when using the -subj option 5556 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>) 5557 [Lutz Jaenicke] 5558 5559 *) Make object definitions compliant to LDAP (RFC2256): SN is the short 5560 form for "surname", serialNumber has no short form. 5561 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798; 5562 therefore remove "mail" short name for "internet 7". 5563 The OID for unique identifiers in X509 certificates is 5564 x500UniqueIdentifier, not uniqueIdentifier. 5565 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>) 5566 [Lutz Jaenicke] 5567 5568 *) Add an "init" command to the ENGINE config module and auto initialize 5569 ENGINEs. Without any "init" command the ENGINE will be initialized 5570 after all ctrl commands have been executed on it. If init=1 the 5571 ENGINE is initailized at that point (ctrls before that point are run 5572 on the uninitialized ENGINE and after on the initialized one). If 5573 init=0 then the ENGINE will not be iniatialized at all. 5574 [Steve Henson] 5575 5576 *) Fix the 'app_verify_callback' interface so that the user-defined 5577 argument is actually passed to the callback: In the 5578 SSL_CTX_set_cert_verify_callback() prototype, the callback 5579 declaration has been changed from 5580 int (*cb)() 5581 into 5582 int (*cb)(X509_STORE_CTX *,void *); 5583 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call 5584 i=s->ctx->app_verify_callback(&ctx) 5585 has been changed into 5586 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg). 5587 5588 To update applications using SSL_CTX_set_cert_verify_callback(), 5589 a dummy argument can be added to their callback functions. 5590 [D. K. Smetters <smetters@parc.xerox.com>] 5591 5592 *) Added the '4758cca' ENGINE to support IBM 4758 cards. 5593 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe] 5594 5595 *) Add and OPENSSL_LOAD_CONF define which will cause 5596 OpenSSL_add_all_algorithms() to load the openssl.cnf config file. 5597 This allows older applications to transparently support certain 5598 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading. 5599 Two new functions OPENSSL_add_all_algorithms_noconf() which will never 5600 load the config file and OPENSSL_add_all_algorithms_conf() which will 5601 always load it have also been added. 5602 [Steve Henson] 5603 5604 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES. 5605 Adjust NIDs and EVP layer. 5606 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] 5607 5608 *) Config modules support in openssl utility. 5609 5610 Most commands now load modules from the config file, 5611 though in a few (such as version) this isn't done 5612 because it couldn't be used for anything. 5613 5614 In the case of ca and req the config file used is 5615 the same as the utility itself: that is the -config 5616 command line option can be used to specify an 5617 alternative file. 5618 [Steve Henson] 5619 5620 *) Move default behaviour from OPENSSL_config(). If appname is NULL 5621 use "openssl_conf" if filename is NULL use default openssl config file. 5622 [Steve Henson] 5623 5624 *) Add an argument to OPENSSL_config() to allow the use of an alternative 5625 config section name. Add a new flag to tolerate a missing config file 5626 and move code to CONF_modules_load_file(). 5627 [Steve Henson] 5628 5629 *) Support for crypto accelerator cards from Accelerated Encryption 5630 Processing, www.aep.ie. (Use engine 'aep') 5631 The support was copied from 0.9.6c [engine] and adapted/corrected 5632 to work with the new engine framework. 5633 [AEP Inc. and Richard Levitte] 5634 5635 *) Support for SureWare crypto accelerator cards from Baltimore 5636 Technologies. (Use engine 'sureware') 5637 The support was copied from 0.9.6c [engine] and adapted 5638 to work with the new engine framework. 5639 [Richard Levitte] 5640 5641 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually 5642 make the newer ENGINE framework commands for the CHIL engine work. 5643 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte] 5644 5645 *) Make it possible to produce shared libraries on ReliantUNIX. 5646 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte] 5647 5648 *) Add the configuration target debug-linux-ppro. 5649 Make 'openssl rsa' use the general key loading routines 5650 implemented in apps.c, and make those routines able to 5651 handle the key format FORMAT_NETSCAPE and the variant 5652 FORMAT_IISSGC. 5653 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 5654 5655 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). 5656 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 5657 5658 *) Add -keyform to rsautl, and document -engine. 5659 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>] 5660 5661 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new 5662 BIO_R_NO_SUCH_FILE error code rather than the generic 5663 ERR_R_SYS_LIB error code if fopen() fails with ENOENT. 5664 [Ben Laurie] 5665 5666 *) Add new functions 5667 ERR_peek_last_error 5668 ERR_peek_last_error_line 5669 ERR_peek_last_error_line_data. 5670 These are similar to 5671 ERR_peek_error 5672 ERR_peek_error_line 5673 ERR_peek_error_line_data, 5674 but report on the latest error recorded rather than the first one 5675 still in the error queue. 5676 [Ben Laurie, Bodo Moeller] 5677 5678 *) default_algorithms option in ENGINE config module. This allows things 5679 like: 5680 default_algorithms = ALL 5681 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS 5682 [Steve Henson] 5683 5684 *) Prelminary ENGINE config module. 5685 [Steve Henson] 5686 5687 *) New experimental application configuration code. 5688 [Steve Henson] 5689 5690 *) Change the AES code to follow the same name structure as all other 5691 symmetric ciphers, and behave the same way. Move everything to 5692 the directory crypto/aes, thereby obsoleting crypto/rijndael. 5693 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] 5694 5695 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c. 5696 [Ben Laurie and Theo de Raadt] 5697 5698 *) Add option to output public keys in req command. 5699 [Massimiliano Pala madwolf@openca.org] 5700 5701 *) Use wNAFs in EC_POINTs_mul() for improved efficiency 5702 (up to about 10% better than before for P-192 and P-224). 5703 [Bodo Moeller] 5704 5705 *) New functions/macros 5706 5707 SSL_CTX_set_msg_callback(ctx, cb) 5708 SSL_CTX_set_msg_callback_arg(ctx, arg) 5709 SSL_set_msg_callback(ssl, cb) 5710 SSL_set_msg_callback_arg(ssl, arg) 5711 5712 to request calling a callback function 5713 5714 void cb(int write_p, int version, int content_type, 5715 const void *buf, size_t len, SSL *ssl, void *arg) 5716 5717 whenever a protocol message has been completely received 5718 (write_p == 0) or sent (write_p == 1). Here 'version' is the 5719 protocol version according to which the SSL library interprets 5720 the current protocol message (SSL2_VERSION, SSL3_VERSION, or 5721 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or 5722 the content type as defined in the SSL 3.0/TLS 1.0 protocol 5723 specification (change_cipher_spec(20), alert(21), handshake(22)). 5724 'buf' and 'len' point to the actual message, 'ssl' to the 5725 SSL object, and 'arg' is the application-defined value set by 5726 SSL[_CTX]_set_msg_callback_arg(). 5727 5728 'openssl s_client' and 'openssl s_server' have new '-msg' options 5729 to enable a callback that displays all protocol messages. 5730 [Bodo Moeller] 5731 5732 *) Change the shared library support so shared libraries are built as 5733 soon as the corresponding static library is finished, and thereby get 5734 openssl and the test programs linked against the shared library. 5735 This still only happens when the keyword "shard" has been given to 5736 the configuration scripts. 5737 5738 NOTE: shared library support is still an experimental thing, and 5739 backward binary compatibility is still not guaranteed. 5740 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte] 5741 5742 *) Add support for Subject Information Access extension. 5743 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>] 5744 5745 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero 5746 additional bytes when new memory had to be allocated, not just 5747 when reusing an existing buffer. 5748 [Bodo Moeller] 5749 5750 *) New command line and configuration option 'utf8' for the req command. 5751 This allows field values to be specified as UTF8 strings. 5752 [Steve Henson] 5753 5754 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel 5755 runs for the former and machine-readable output for the latter. 5756 [Ben Laurie] 5757 5758 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion 5759 of the e-mail address in the DN (i.e., it will go into a certificate 5760 extension only). The new configuration file option 'email_in_dn = no' 5761 has the same effect. 5762 [Massimiliano Pala madwolf@openca.org] 5763 5764 *) Change all functions with names starting with des_ to be starting 5765 with DES_ instead. Add wrappers that are compatible with libdes, 5766 but are named _ossl_old_des_*. Finally, add macros that map the 5767 des_* symbols to the corresponding _ossl_old_des_* if libdes 5768 compatibility is desired. If OpenSSL 0.9.6c compatibility is 5769 desired, the des_* symbols will be mapped to DES_*, with one 5770 exception. 5771 5772 Since we provide two compatibility mappings, the user needs to 5773 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes 5774 compatibility is desired. The default (i.e., when that macro 5775 isn't defined) is OpenSSL 0.9.6c compatibility. 5776 5777 There are also macros that enable and disable the support of old 5778 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT 5779 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those 5780 are defined, the default will apply: to support the old des routines. 5781 5782 In either case, one must include openssl/des.h to get the correct 5783 definitions. Do not try to just include openssl/des_old.h, that 5784 won't work. 5785 5786 NOTE: This is a major break of an old API into a new one. Software 5787 authors are encouraged to switch to the DES_ style functions. Some 5788 time in the future, des_old.h and the libdes compatibility functions 5789 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the 5790 default), and then completely removed. 5791 [Richard Levitte] 5792 5793 *) Test for certificates which contain unsupported critical extensions. 5794 If such a certificate is found during a verify operation it is 5795 rejected by default: this behaviour can be overridden by either 5796 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or 5797 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function 5798 X509_supported_extension() has also been added which returns 1 if a 5799 particular extension is supported. 5800 [Steve Henson] 5801 5802 *) Modify the behaviour of EVP cipher functions in similar way to digests 5803 to retain compatibility with existing code. 5804 [Steve Henson] 5805 5806 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain 5807 compatibility with existing code. In particular the 'ctx' parameter does 5808 not have to be to be initialized before the call to EVP_DigestInit() and 5809 it is tidied up after a call to EVP_DigestFinal(). New function 5810 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function 5811 EVP_MD_CTX_copy() changed to not require the destination to be 5812 initialized valid and new function EVP_MD_CTX_copy_ex() added which 5813 requires the destination to be valid. 5814 5815 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(), 5816 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex(). 5817 [Steve Henson] 5818 5819 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it 5820 so that complete 'Handshake' protocol structures are kept in memory 5821 instead of overwriting 'msg_type' and 'length' with 'body' data. 5822 [Bodo Moeller] 5823 5824 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32. 5825 [Massimo Santin via Richard Levitte] 5826 5827 *) Major restructuring to the underlying ENGINE code. This includes 5828 reduction of linker bloat, separation of pure "ENGINE" manipulation 5829 (initialisation, etc) from functionality dealing with implementations 5830 of specific crypto iterfaces. This change also introduces integrated 5831 support for symmetric ciphers and digest implementations - so ENGINEs 5832 can now accelerate these by providing EVP_CIPHER and EVP_MD 5833 implementations of their own. This is detailed in crypto/engine/README 5834 as it couldn't be adequately described here. However, there are a few 5835 API changes worth noting - some RSA, DSA, DH, and RAND functions that 5836 were changed in the original introduction of ENGINE code have now 5837 reverted back - the hooking from this code to ENGINE is now a good 5838 deal more passive and at run-time, operations deal directly with 5839 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than 5840 dereferencing through an ENGINE pointer any more. Also, the ENGINE 5841 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed - 5842 they were not being used by the framework as there is no concept of a 5843 BIGNUM_METHOD and they could not be generalised to the new 5844 'ENGINE_TABLE' mechanism that underlies the new code. Similarly, 5845 ENGINE_cpy() has been removed as it cannot be consistently defined in 5846 the new code. 5847 [Geoff Thorpe] 5848 5849 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds. 5850 [Steve Henson] 5851 5852 *) Change mkdef.pl to sort symbols that get the same entry number, 5853 and make sure the automatically generated functions ERR_load_* 5854 become part of libeay.num as well. 5855 [Richard Levitte] 5856 5857 *) New function SSL_renegotiate_pending(). This returns true once 5858 renegotiation has been requested (either SSL_renegotiate() call 5859 or HelloRequest/ClientHello receveived from the peer) and becomes 5860 false once a handshake has been completed. 5861 (For servers, SSL_renegotiate() followed by SSL_do_handshake() 5862 sends a HelloRequest, but does not ensure that a handshake takes 5863 place. SSL_renegotiate_pending() is useful for checking if the 5864 client has followed the request.) 5865 [Bodo Moeller] 5866 5867 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION. 5868 By default, clients may request session resumption even during 5869 renegotiation (if session ID contexts permit); with this option, 5870 session resumption is possible only in the first handshake. 5871 5872 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes 5873 more bits available for options that should not be part of 5874 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION). 5875 [Bodo Moeller] 5876 5877 *) Add some demos for certificate and certificate request creation. 5878 [Steve Henson] 5879 5880 *) Make maximum certificate chain size accepted from the peer application 5881 settable (SSL*_get/set_max_cert_list()), as proposed by 5882 "Douglas E. Engert" <deengert@anl.gov>. 5883 [Lutz Jaenicke] 5884 5885 *) Add support for shared libraries for Unixware-7 5886 (Boyd Lynn Gerber <gerberb@zenez.com>). 5887 [Lutz Jaenicke] 5888 5889 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to 5890 be done prior to destruction. Use this to unload error strings from 5891 ENGINEs that load their own error strings. NB: This adds two new API 5892 functions to "get" and "set" this destroy handler in an ENGINE. 5893 [Geoff Thorpe] 5894 5895 *) Alter all existing ENGINE implementations (except "openssl" and 5896 "openbsd") to dynamically instantiate their own error strings. This 5897 makes them more flexible to be built both as statically-linked ENGINEs 5898 and self-contained shared-libraries loadable via the "dynamic" ENGINE. 5899 Also, add stub code to each that makes building them as self-contained 5900 shared-libraries easier (see README.ENGINE). 5901 [Geoff Thorpe] 5902 5903 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE 5904 implementations into applications that are completely implemented in 5905 self-contained shared-libraries. The "dynamic" ENGINE exposes control 5906 commands that can be used to configure what shared-library to load and 5907 to control aspects of the way it is handled. Also, made an update to 5908 the README.ENGINE file that brings its information up-to-date and 5909 provides some information and instructions on the "dynamic" ENGINE 5910 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc). 5911 [Geoff Thorpe] 5912 5913 *) Make it possible to unload ranges of ERR strings with a new 5914 "ERR_unload_strings" function. 5915 [Geoff Thorpe] 5916 5917 *) Add a copy() function to EVP_MD. 5918 [Ben Laurie] 5919 5920 *) Make EVP_MD routines take a context pointer instead of just the 5921 md_data void pointer. 5922 [Ben Laurie] 5923 5924 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates 5925 that the digest can only process a single chunk of data 5926 (typically because it is provided by a piece of 5927 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application 5928 is only going to provide a single chunk of data, and hence the 5929 framework needn't accumulate the data for oneshot drivers. 5930 [Ben Laurie] 5931 5932 *) As with "ERR", make it possible to replace the underlying "ex_data" 5933 functions. This change also alters the storage and management of global 5934 ex_data state - it's now all inside ex_data.c and all "class" code (eg. 5935 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class 5936 index counters. The API functions that use this state have been changed 5937 to take a "class_index" rather than pointers to the class's local STACK 5938 and counter, and there is now an API function to dynamically create new 5939 classes. This centralisation allows us to (a) plug a lot of the 5940 thread-safety problems that existed, and (b) makes it possible to clean 5941 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b) 5942 such data would previously have always leaked in application code and 5943 workarounds were in place to make the memory debugging turn a blind eye 5944 to it. Application code that doesn't use this new function will still 5945 leak as before, but their memory debugging output will announce it now 5946 rather than letting it slide. 5947 5948 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change 5949 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now 5950 has a return value to indicate success or failure. 5951 [Geoff Thorpe] 5952 5953 *) Make it possible to replace the underlying "ERR" functions such that the 5954 global state (2 LHASH tables and 2 locks) is only used by the "default" 5955 implementation. This change also adds two functions to "get" and "set" 5956 the implementation prior to it being automatically set the first time 5957 any other ERR function takes place. Ie. an application can call "get", 5958 pass the return value to a module it has just loaded, and that module 5959 can call its own "set" function using that value. This means the 5960 module's "ERR" operations will use (and modify) the error state in the 5961 application and not in its own statically linked copy of OpenSSL code. 5962 [Geoff Thorpe] 5963 5964 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment 5965 reference counts. This performs normal REF_PRINT/REF_CHECK macros on 5966 the operation, and provides a more encapsulated way for external code 5967 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code 5968 to use these functions rather than manually incrementing the counts. 5969 5970 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()". 5971 [Geoff Thorpe] 5972 5973 *) Add EVP test program. 5974 [Ben Laurie] 5975 5976 *) Add symmetric cipher support to ENGINE. Expect the API to change! 5977 [Ben Laurie] 5978 5979 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name() 5980 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(), 5981 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate(). 5982 These allow a CRL to be built without having to access X509_CRL fields 5983 directly. Modify 'ca' application to use new functions. 5984 [Steve Henson] 5985 5986 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended 5987 bug workarounds. Rollback attack detection is a security feature. 5988 The problem will only arise on OpenSSL servers when TLSv1 is not 5989 available (sslv3_server_method() or SSL_OP_NO_TLSv1). 5990 Software authors not wanting to support TLSv1 will have special reasons 5991 for their choice and can explicitly enable this option. 5992 [Bodo Moeller, Lutz Jaenicke] 5993 5994 *) Rationalise EVP so it can be extended: don't include a union of 5995 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX 5996 (similar to those existing for EVP_CIPHER_CTX). 5997 Usage example: 5998 5999 EVP_MD_CTX md; 6000 6001 EVP_MD_CTX_init(&md); /* new function call */ 6002 EVP_DigestInit(&md, EVP_sha1()); 6003 EVP_DigestUpdate(&md, in, len); 6004 EVP_DigestFinal(&md, out, NULL); 6005 EVP_MD_CTX_cleanup(&md); /* new function call */ 6006 6007 [Ben Laurie] 6008 6009 *) Make DES key schedule conform to the usual scheme, as well as 6010 correcting its structure. This means that calls to DES functions 6011 now have to pass a pointer to a des_key_schedule instead of a 6012 plain des_key_schedule (which was actually always a pointer 6013 anyway): E.g., 6014 6015 des_key_schedule ks; 6016 6017 des_set_key_checked(..., &ks); 6018 des_ncbc_encrypt(..., &ks, ...); 6019 6020 (Note that a later change renames 'des_...' into 'DES_...'.) 6021 [Ben Laurie] 6022 6023 *) Initial reduction of linker bloat: the use of some functions, such as 6024 PEM causes large amounts of unused functions to be linked in due to 6025 poor organisation. For example pem_all.c contains every PEM function 6026 which has a knock on effect of linking in large amounts of (unused) 6027 ASN1 code. Grouping together similar functions and splitting unrelated 6028 functions prevents this. 6029 [Steve Henson] 6030 6031 *) Cleanup of EVP macros. 6032 [Ben Laurie] 6033 6034 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the 6035 correct _ecb suffix. 6036 [Ben Laurie] 6037 6038 *) Add initial OCSP responder support to ocsp application. The 6039 revocation information is handled using the text based index 6040 use by the ca application. The responder can either handle 6041 requests generated internally, supplied in files (for example 6042 via a CGI script) or using an internal minimal server. 6043 [Steve Henson] 6044 6045 *) Add configuration choices to get zlib compression for TLS. 6046 [Richard Levitte] 6047 6048 *) Changes to Kerberos SSL for RFC 2712 compliance: 6049 1. Implemented real KerberosWrapper, instead of just using 6050 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>] 6051 2. Implemented optional authenticator field of KerberosWrapper. 6052 6053 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req, 6054 and authenticator structs; see crypto/krb5/. 6055 6056 Generalized Kerberos calls to support multiple Kerberos libraries. 6057 [Vern Staats <staatsvr@asc.hpc.mil>, 6058 Jeffrey Altman <jaltman@columbia.edu> 6059 via Richard Levitte] 6060 6061 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it 6062 already does with RSA. testdsa.h now has 'priv_key/pub_key' 6063 values for each of the key sizes rather than having just 6064 parameters (and 'speed' generating keys each time). 6065 [Geoff Thorpe] 6066 6067 *) Speed up EVP routines. 6068 Before: 6069encrypt 6070type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes 6071des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k 6072des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k 6073des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k 6074decrypt 6075des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k 6076des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k 6077des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k 6078 After: 6079encrypt 6080des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k 6081decrypt 6082des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k 6083 [Ben Laurie] 6084 6085 *) Added the OS2-EMX target. 6086 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte] 6087 6088 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions 6089 to support NCONF routines in extension code. New function CONF_set_nconf() 6090 to allow functions which take an NCONF to also handle the old LHASH 6091 structure: this means that the old CONF compatible routines can be 6092 retained (in particular wrt extensions) without having to duplicate the 6093 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack. 6094 [Steve Henson] 6095 6096 *) Enhance the general user interface with mechanisms for inner control 6097 and with possibilities to have yes/no kind of prompts. 6098 [Richard Levitte] 6099 6100 *) Change all calls to low level digest routines in the library and 6101 applications to use EVP. Add missing calls to HMAC_cleanup() and 6102 don't assume HMAC_CTX can be copied using memcpy(). 6103 [Verdon Walker <VWalker@novell.com>, Steve Henson] 6104 6105 *) Add the possibility to control engines through control names but with 6106 arbitrary arguments instead of just a string. 6107 Change the key loaders to take a UI_METHOD instead of a callback 6108 function pointer. NOTE: this breaks binary compatibility with earlier 6109 versions of OpenSSL [engine]. 6110 Adapt the nCipher code for these new conditions and add a card insertion 6111 callback. 6112 [Richard Levitte] 6113 6114 *) Enhance the general user interface with mechanisms to better support 6115 dialog box interfaces, application-defined prompts, the possibility 6116 to use defaults (for example default passwords from somewhere else) 6117 and interrupts/cancellations. 6118 [Richard Levitte] 6119 6120 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name 6121 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility. 6122 [Steve Henson] 6123 6124 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also 6125 tidy up some unnecessarily weird code in 'sk_new()'). 6126 [Geoff, reported by Diego Tartara <dtartara@novamens.com>] 6127 6128 *) Change the key loading routines for ENGINEs to use the same kind 6129 callback (pem_password_cb) as all other routines that need this 6130 kind of callback. 6131 [Richard Levitte] 6132 6133 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with 6134 256 bit (=32 byte) keys. Of course seeding with more entropy bytes 6135 than this minimum value is recommended. 6136 [Lutz Jaenicke] 6137 6138 *) New random seeder for OpenVMS, using the system process statistics 6139 that are easily reachable. 6140 [Richard Levitte] 6141 6142 *) Windows apparently can't transparently handle global 6143 variables defined in DLLs. Initialisations such as: 6144 6145 const ASN1_ITEM *it = &ASN1_INTEGER_it; 6146 6147 wont compile. This is used by the any applications that need to 6148 declare their own ASN1 modules. This was fixed by adding the option 6149 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly 6150 needed for static libraries under Win32. 6151 [Steve Henson] 6152 6153 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle 6154 setting of purpose and trust fields. New X509_STORE trust and 6155 purpose functions and tidy up setting in other SSL functions. 6156 [Steve Henson] 6157 6158 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE 6159 structure. These are inherited by X509_STORE_CTX when it is 6160 initialised. This allows various defaults to be set in the 6161 X509_STORE structure (such as flags for CRL checking and custom 6162 purpose or trust settings) for functions which only use X509_STORE_CTX 6163 internally such as S/MIME. 6164 6165 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and 6166 trust settings if they are not set in X509_STORE. This allows X509_STORE 6167 purposes and trust (in S/MIME for example) to override any set by default. 6168 6169 Add command line options for CRL checking to smime, s_client and s_server 6170 applications. 6171 [Steve Henson] 6172 6173 *) Initial CRL based revocation checking. If the CRL checking flag(s) 6174 are set then the CRL is looked up in the X509_STORE structure and 6175 its validity and signature checked, then if the certificate is found 6176 in the CRL the verify fails with a revoked error. 6177 6178 Various new CRL related callbacks added to X509_STORE_CTX structure. 6179 6180 Command line options added to 'verify' application to support this. 6181 6182 This needs some additional work, such as being able to handle multiple 6183 CRLs with different times, extension based lookup (rather than just 6184 by subject name) and ultimately more complete V2 CRL extension 6185 handling. 6186 [Steve Henson] 6187 6188 *) Add a general user interface API (crypto/ui/). This is designed 6189 to replace things like des_read_password and friends (backward 6190 compatibility functions using this new API are provided). 6191 The purpose is to remove prompting functions from the DES code 6192 section as well as provide for prompting through dialog boxes in 6193 a window system and the like. 6194 [Richard Levitte] 6195 6196 *) Add "ex_data" support to ENGINE so implementations can add state at a 6197 per-structure level rather than having to store it globally. 6198 [Geoff] 6199 6200 *) Make it possible for ENGINE structures to be copied when retrieved by 6201 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY. 6202 This causes the "original" ENGINE structure to act like a template, 6203 analogous to the RSA vs. RSA_METHOD type of separation. Because of this 6204 operational state can be localised to each ENGINE structure, despite the 6205 fact they all share the same "methods". New ENGINE structures returned in 6206 this case have no functional references and the return value is the single 6207 structural reference. This matches the single structural reference returned 6208 by ENGINE_by_id() normally, when it is incremented on the pre-existing 6209 ENGINE structure. 6210 [Geoff] 6211 6212 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this 6213 needs to match any other type at all we need to manually clear the 6214 tag cache. 6215 [Steve Henson] 6216 6217 *) Changes to the "openssl engine" utility to include; 6218 - verbosity levels ('-v', '-vv', and '-vvv') that provide information 6219 about an ENGINE's available control commands. 6220 - executing control commands from command line arguments using the 6221 '-pre' and '-post' switches. '-post' is only used if '-t' is 6222 specified and the ENGINE is successfully initialised. The syntax for 6223 the individual commands are colon-separated, for example; 6224 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so 6225 [Geoff] 6226 6227 *) New dynamic control command support for ENGINEs. ENGINEs can now 6228 declare their own commands (numbers), names (strings), descriptions, 6229 and input types for run-time discovery by calling applications. A 6230 subset of these commands are implicitly classed as "executable" 6231 depending on their input type, and only these can be invoked through 6232 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this 6233 can be based on user input, config files, etc). The distinction is 6234 that "executable" commands cannot return anything other than a boolean 6235 result and can only support numeric or string input, whereas some 6236 discoverable commands may only be for direct use through 6237 ENGINE_ctrl(), eg. supporting the exchange of binary data, function 6238 pointers, or other custom uses. The "executable" commands are to 6239 support parameterisations of ENGINE behaviour that can be 6240 unambiguously defined by ENGINEs and used consistently across any 6241 OpenSSL-based application. Commands have been added to all the 6242 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow 6243 control over shared-library paths without source code alterations. 6244 [Geoff] 6245 6246 *) Changed all ENGINE implementations to dynamically allocate their 6247 ENGINEs rather than declaring them statically. Apart from this being 6248 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction, 6249 this also allows the implementations to compile without using the 6250 internal engine_int.h header. 6251 [Geoff] 6252 6253 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a 6254 'const' value. Any code that should be able to modify a RAND_METHOD 6255 should already have non-const pointers to it (ie. they should only 6256 modify their own ones). 6257 [Geoff] 6258 6259 *) Made a variety of little tweaks to the ENGINE code. 6260 - "atalla" and "ubsec" string definitions were moved from header files 6261 to C code. "nuron" string definitions were placed in variables 6262 rather than hard-coded - allowing parameterisation of these values 6263 later on via ctrl() commands. 6264 - Removed unused "#if 0"'d code. 6265 - Fixed engine list iteration code so it uses ENGINE_free() to release 6266 structural references. 6267 - Constified the RAND_METHOD element of ENGINE structures. 6268 - Constified various get/set functions as appropriate and added 6269 missing functions (including a catch-all ENGINE_cpy that duplicates 6270 all ENGINE values onto a new ENGINE except reference counts/state). 6271 - Removed NULL parameter checks in get/set functions. Setting a method 6272 or function to NULL is a way of cancelling out a previously set 6273 value. Passing a NULL ENGINE parameter is just plain stupid anyway 6274 and doesn't justify the extra error symbols and code. 6275 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for 6276 flags from engine_int.h to engine.h. 6277 - Changed prototypes for ENGINE handler functions (init(), finish(), 6278 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter. 6279 [Geoff] 6280 6281 *) Implement binary inversion algorithm for BN_mod_inverse in addition 6282 to the algorithm using long division. The binary algorithm can be 6283 used only if the modulus is odd. On 32-bit systems, it is faster 6284 only for relatively small moduli (roughly 20-30% for 128-bit moduli, 6285 roughly 5-15% for 256-bit moduli), so we use it only for moduli 6286 up to 450 bits. In 64-bit environments, the binary algorithm 6287 appears to be advantageous for much longer moduli; here we use it 6288 for moduli up to 2048 bits. 6289 [Bodo Moeller] 6290 6291 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code 6292 could not support the combine flag in choice fields. 6293 [Steve Henson] 6294 6295 *) Add a 'copy_extensions' option to the 'ca' utility. This copies 6296 extensions from a certificate request to the certificate. 6297 [Steve Henson] 6298 6299 *) Allow multiple 'certopt' and 'nameopt' options to be separated 6300 by commas. Add 'namopt' and 'certopt' options to the 'ca' config 6301 file: this allows the display of the certificate about to be 6302 signed to be customised, to allow certain fields to be included 6303 or excluded and extension details. The old system didn't display 6304 multicharacter strings properly, omitted fields not in the policy 6305 and couldn't display additional details such as extensions. 6306 [Steve Henson] 6307 6308 *) Function EC_POINTs_mul for multiple scalar multiplication 6309 of an arbitrary number of elliptic curve points 6310 \sum scalars[i]*points[i], 6311 optionally including the generator defined for the EC_GROUP: 6312 scalar*generator + \sum scalars[i]*points[i]. 6313 6314 EC_POINT_mul is a simple wrapper function for the typical case 6315 that the point list has just one item (besides the optional 6316 generator). 6317 [Bodo Moeller] 6318 6319 *) First EC_METHODs for curves over GF(p): 6320 6321 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr 6322 operations and provides various method functions that can also 6323 operate with faster implementations of modular arithmetic. 6324 6325 EC_GFp_mont_method() reuses most functions that are part of 6326 EC_GFp_simple_method, but uses Montgomery arithmetic. 6327 6328 [Bodo Moeller; point addition and point doubling 6329 implementation directly derived from source code provided by 6330 Lenka Fibikova <fibikova@exp-math.uni-essen.de>] 6331 6332 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h, 6333 crypto/ec/ec_lib.c): 6334 6335 Curves are EC_GROUP objects (with an optional group generator) 6336 based on EC_METHODs that are built into the library. 6337 6338 Points are EC_POINT objects based on EC_GROUP objects. 6339 6340 Most of the framework would be able to handle curves over arbitrary 6341 finite fields, but as there are no obvious types for fields other 6342 than GF(p), some functions are limited to that for now. 6343 [Bodo Moeller] 6344 6345 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires 6346 that the file contains a complete HTTP response. 6347 [Richard Levitte] 6348 6349 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl 6350 change the def and num file printf format specifier from "%-40sXXX" 6351 to "%-39s XXX". The latter will always guarantee a space after the 6352 field while the former will cause them to run together if the field 6353 is 40 of more characters long. 6354 [Steve Henson] 6355 6356 *) Constify the cipher and digest 'method' functions and structures 6357 and modify related functions to take constant EVP_MD and EVP_CIPHER 6358 pointers. 6359 [Steve Henson] 6360 6361 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them 6362 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32. 6363 [Bodo Moeller] 6364 6365 *) Modify EVP_Digest*() routines so they now return values. Although the 6366 internal software routines can never fail additional hardware versions 6367 might. 6368 [Steve Henson] 6369 6370 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts: 6371 6372 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7 6373 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32. 6374 6375 ASN1 error codes 6376 ERR_R_NESTED_ASN1_ERROR 6377 ... 6378 ERR_R_MISSING_ASN1_EOS 6379 were 4 .. 9, conflicting with 6380 ERR_LIB_RSA (= ERR_R_RSA_LIB) 6381 ... 6382 ERR_LIB_PEM (= ERR_R_PEM_LIB). 6383 They are now 58 .. 63 (i.e., just below ERR_R_FATAL). 6384 6385 Add new error code 'ERR_R_INTERNAL_ERROR'. 6386 [Bodo Moeller] 6387 6388 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock 6389 suffices. 6390 [Bodo Moeller] 6391 6392 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This 6393 sets the subject name for a new request or supersedes the 6394 subject name in a given request. Formats that can be parsed are 6395 'CN=Some Name, OU=myOU, C=IT' 6396 and 6397 'CN=Some Name/OU=myOU/C=IT'. 6398 6399 Add options '-batch' and '-verbose' to 'openssl req'. 6400 [Massimiliano Pala <madwolf@hackmasters.net>] 6401 6402 *) Introduce the possibility to access global variables through 6403 functions on platform were that's the best way to handle exporting 6404 global variables in shared libraries. To enable this functionality, 6405 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro 6406 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter 6407 is normally done by Configure or something similar). 6408 6409 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL 6410 in the source file (foo.c) like this: 6411 6412 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1; 6413 OPENSSL_IMPLEMENT_GLOBAL(double,bar); 6414 6415 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL 6416 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this: 6417 6418 OPENSSL_DECLARE_GLOBAL(int,foo); 6419 #define foo OPENSSL_GLOBAL_REF(foo) 6420 OPENSSL_DECLARE_GLOBAL(double,bar); 6421 #define bar OPENSSL_GLOBAL_REF(bar) 6422 6423 The #defines are very important, and therefore so is including the 6424 header file everywhere where the defined globals are used. 6425 6426 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition 6427 of ASN.1 items, but that structure is a bit different. 6428 6429 The largest change is in util/mkdef.pl which has been enhanced with 6430 better and easier to understand logic to choose which symbols should 6431 go into the Windows .def files as well as a number of fixes and code 6432 cleanup (among others, algorithm keywords are now sorted 6433 lexicographically to avoid constant rewrites). 6434 [Richard Levitte] 6435 6436 *) In BN_div() keep a copy of the sign of 'num' before writing the 6437 result to 'rm' because if rm==num the value will be overwritten 6438 and produce the wrong result if 'num' is negative: this caused 6439 problems with BN_mod() and BN_nnmod(). 6440 [Steve Henson] 6441 6442 *) Function OCSP_request_verify(). This checks the signature on an 6443 OCSP request and verifies the signer certificate. The signer 6444 certificate is just checked for a generic purpose and OCSP request 6445 trust settings. 6446 [Steve Henson] 6447 6448 *) Add OCSP_check_validity() function to check the validity of OCSP 6449 responses. OCSP responses are prepared in real time and may only 6450 be a few seconds old. Simply checking that the current time lies 6451 between thisUpdate and nextUpdate max reject otherwise valid responses 6452 caused by either OCSP responder or client clock inaccuracy. Instead 6453 we allow thisUpdate and nextUpdate to fall within a certain period of 6454 the current time. The age of the response can also optionally be 6455 checked. Two new options -validity_period and -status_age added to 6456 ocsp utility. 6457 [Steve Henson] 6458 6459 *) If signature or public key algorithm is unrecognized print out its 6460 OID rather that just UNKNOWN. 6461 [Steve Henson] 6462 6463 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and 6464 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate 6465 ID to be generated from the issuer certificate alone which can then be 6466 passed to OCSP_id_issuer_cmp(). 6467 [Steve Henson] 6468 6469 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new 6470 ASN1 modules to export functions returning ASN1_ITEM pointers 6471 instead of the ASN1_ITEM structures themselves. This adds several 6472 new macros which allow the underlying ASN1 function/structure to 6473 be accessed transparently. As a result code should not use ASN1_ITEM 6474 references directly (such as &X509_it) but instead use the relevant 6475 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow 6476 use of the new ASN1 code on platforms where exporting structures 6477 is problematical (for example in shared libraries) but exporting 6478 functions returning pointers to structures is not. 6479 [Steve Henson] 6480 6481 *) Add support for overriding the generation of SSL/TLS session IDs. 6482 These callbacks can be registered either in an SSL_CTX or per SSL. 6483 The purpose of this is to allow applications to control, if they wish, 6484 the arbitrary values chosen for use as session IDs, particularly as it 6485 can be useful for session caching in multiple-server environments. A 6486 command-line switch for testing this (and any client code that wishes 6487 to use such a feature) has been added to "s_server". 6488 [Geoff Thorpe, Lutz Jaenicke] 6489 6490 *) Modify mkdef.pl to recognise and parse preprocessor conditionals 6491 of the form '#if defined(...) || defined(...) || ...' and 6492 '#if !defined(...) && !defined(...) && ...'. This also avoids 6493 the growing number of special cases it was previously handling. 6494 [Richard Levitte] 6495 6496 *) Make all configuration macros available for application by making 6497 sure they are available in opensslconf.h, by giving them names starting 6498 with "OPENSSL_" to avoid conflicts with other packages and by making 6499 sure e_os2.h will cover all platform-specific cases together with 6500 opensslconf.h. 6501 Additionally, it is now possible to define configuration/platform- 6502 specific names (called "system identities"). In the C code, these 6503 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another 6504 macro with the name beginning with "OPENSSL_SYS_", which is determined 6505 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on 6506 what is available. 6507 [Richard Levitte] 6508 6509 *) New option -set_serial to 'req' and 'x509' this allows the serial 6510 number to use to be specified on the command line. Previously self 6511 signed certificates were hard coded with serial number 0 and the 6512 CA options of 'x509' had to use a serial number in a file which was 6513 auto incremented. 6514 [Steve Henson] 6515 6516 *) New options to 'ca' utility to support V2 CRL entry extensions. 6517 Currently CRL reason, invalidity date and hold instruction are 6518 supported. Add new CRL extensions to V3 code and some new objects. 6519 [Steve Henson] 6520 6521 *) New function EVP_CIPHER_CTX_set_padding() this is used to 6522 disable standard block padding (aka PKCS#5 padding) in the EVP 6523 API, which was previously mandatory. This means that the data is 6524 not padded in any way and so the total length much be a multiple 6525 of the block size, otherwise an error occurs. 6526 [Steve Henson] 6527 6528 *) Initial (incomplete) OCSP SSL support. 6529 [Steve Henson] 6530 6531 *) New function OCSP_parse_url(). This splits up a URL into its host, 6532 port and path components: primarily to parse OCSP URLs. New -url 6533 option to ocsp utility. 6534 [Steve Henson] 6535 6536 *) New nonce behavior. The return value of OCSP_check_nonce() now 6537 reflects the various checks performed. Applications can decide 6538 whether to tolerate certain situations such as an absent nonce 6539 in a response when one was present in a request: the ocsp application 6540 just prints out a warning. New function OCSP_add1_basic_nonce() 6541 this is to allow responders to include a nonce in a response even if 6542 the request is nonce-less. 6543 [Steve Henson] 6544 6545 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are 6546 skipped when using openssl x509 multiple times on a single input file, 6547 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs". 6548 [Bodo Moeller] 6549 6550 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string() 6551 set string type: to handle setting ASN1_TIME structures. Fix ca 6552 utility to correctly initialize revocation date of CRLs. 6553 [Steve Henson] 6554 6555 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override 6556 the clients preferred ciphersuites and rather use its own preferences. 6557 Should help to work around M$ SGC (Server Gated Cryptography) bug in 6558 Internet Explorer by ensuring unchanged hash method during stepup. 6559 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.) 6560 [Lutz Jaenicke] 6561 6562 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael 6563 to aes and add a new 'exist' option to print out symbols that don't 6564 appear to exist. 6565 [Steve Henson] 6566 6567 *) Additional options to ocsp utility to allow flags to be set and 6568 additional certificates supplied. 6569 [Steve Henson] 6570 6571 *) Add the option -VAfile to 'openssl ocsp', so the user can give the 6572 OCSP client a number of certificate to only verify the response 6573 signature against. 6574 [Richard Levitte] 6575 6576 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to 6577 handle the new API. Currently only ECB, CBC modes supported. Add new 6578 AES OIDs. 6579 6580 Add TLS AES ciphersuites as described in RFC3268, "Advanced 6581 Encryption Standard (AES) Ciphersuites for Transport Layer 6582 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were 6583 not enabled by default and were not part of the "ALL" ciphersuite 6584 alias because they were not yet official; they could be 6585 explicitly requested by specifying the "AESdraft" ciphersuite 6586 group alias. In the final release of OpenSSL 0.9.7, the group 6587 alias is called "AES" and is part of "ALL".) 6588 [Ben Laurie, Steve Henson, Bodo Moeller] 6589 6590 *) New function OCSP_copy_nonce() to copy nonce value (if present) from 6591 request to response. 6592 [Steve Henson] 6593 6594 *) Functions for OCSP responders. OCSP_request_onereq_count(), 6595 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info() 6596 extract information from a certificate request. OCSP_response_create() 6597 creates a response and optionally adds a basic response structure. 6598 OCSP_basic_add1_status() adds a complete single response to a basic 6599 response and returns the OCSP_SINGLERESP structure just added (to allow 6600 extensions to be included for example). OCSP_basic_add1_cert() adds a 6601 certificate to a basic response and OCSP_basic_sign() signs a basic 6602 response with various flags. New helper functions ASN1_TIME_check() 6603 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime() 6604 (converts ASN1_TIME to GeneralizedTime). 6605 [Steve Henson] 6606 6607 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}() 6608 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key 6609 structure from a certificate. X509_pubkey_digest() digests the public_key 6610 contents: this is used in various key identifiers. 6611 [Steve Henson] 6612 6613 *) Make sk_sort() tolerate a NULL argument. 6614 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>] 6615 6616 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates 6617 passed by the function are trusted implicitly. If any of them signed the 6618 response then it is assumed to be valid and is not verified. 6619 [Steve Henson] 6620 6621 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT 6622 to data. This was previously part of the PKCS7 ASN1 code. This 6623 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures. 6624 [Steve Henson, reported by Kenneth R. Robinette 6625 <support@securenetterm.com>] 6626 6627 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1 6628 routines: without these tracing memory leaks is very painful. 6629 Fix leaks in PKCS12 and PKCS7 routines. 6630 [Steve Henson] 6631 6632 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new(). 6633 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which 6634 effectively meant GeneralizedTime would never be used. Now it 6635 is initialised to -1 but X509_time_adj() now has to check the value 6636 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or 6637 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime. 6638 [Steve Henson, reported by Kenneth R. Robinette 6639 <support@securenetterm.com>] 6640 6641 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously 6642 result in a zero length in the ASN1_INTEGER structure which was 6643 not consistent with the structure when d2i_ASN1_INTEGER() was used 6644 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER() 6645 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER() 6646 where it did not print out a minus for negative ASN1_INTEGER. 6647 [Steve Henson] 6648 6649 *) Add summary printout to ocsp utility. The various functions which 6650 convert status values to strings have been renamed to: 6651 OCSP_response_status_str(), OCSP_cert_status_str() and 6652 OCSP_crl_reason_str() and are no longer static. New options 6653 to verify nonce values and to disable verification. OCSP response 6654 printout format cleaned up. 6655 [Steve Henson] 6656 6657 *) Add additional OCSP certificate checks. These are those specified 6658 in RFC2560. This consists of two separate checks: the CA of the 6659 certificate being checked must either be the OCSP signer certificate 6660 or the issuer of the OCSP signer certificate. In the latter case the 6661 OCSP signer certificate must contain the OCSP signing extended key 6662 usage. This check is performed by attempting to match the OCSP 6663 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash 6664 in the OCSP_CERTID structures of the response. 6665 [Steve Henson] 6666 6667 *) Initial OCSP certificate verification added to OCSP_basic_verify() 6668 and related routines. This uses the standard OpenSSL certificate 6669 verify routines to perform initial checks (just CA validity) and 6670 to obtain the certificate chain. Then additional checks will be 6671 performed on the chain. Currently the root CA is checked to see 6672 if it is explicitly trusted for OCSP signing. This is used to set 6673 a root CA as a global signing root: that is any certificate that 6674 chains to that CA is an acceptable OCSP signing certificate. 6675 [Steve Henson] 6676 6677 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3 6678 extensions from a separate configuration file. 6679 As when reading extensions from the main configuration file, 6680 the '-extensions ...' option may be used for specifying the 6681 section to use. 6682 [Massimiliano Pala <madwolf@comune.modena.it>] 6683 6684 *) New OCSP utility. Allows OCSP requests to be generated or 6685 read. The request can be sent to a responder and the output 6686 parsed, outputed or printed in text form. Not complete yet: 6687 still needs to check the OCSP response validity. 6688 [Steve Henson] 6689 6690 *) New subcommands for 'openssl ca': 6691 'openssl ca -status <serial>' prints the status of the cert with 6692 the given serial number (according to the index file). 6693 'openssl ca -updatedb' updates the expiry status of certificates 6694 in the index file. 6695 [Massimiliano Pala <madwolf@comune.modena.it>] 6696 6697 *) New '-newreq-nodes' command option to CA.pl. This is like 6698 '-newreq', but calls 'openssl req' with the '-nodes' option 6699 so that the resulting key is not encrypted. 6700 [Damien Miller <djm@mindrot.org>] 6701 6702 *) New configuration for the GNU Hurd. 6703 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte] 6704 6705 *) Initial code to implement OCSP basic response verify. This 6706 is currently incomplete. Currently just finds the signer's 6707 certificate and verifies the signature on the response. 6708 [Steve Henson] 6709 6710 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in 6711 value of OPENSSLDIR. This is available via the new '-d' option 6712 to 'openssl version', and is also included in 'openssl version -a'. 6713 [Bodo Moeller] 6714 6715 *) Allowing defining memory allocation callbacks that will be given 6716 file name and line number information in additional arguments 6717 (a const char* and an int). The basic functionality remains, as 6718 well as the original possibility to just replace malloc(), 6719 realloc() and free() by functions that do not know about these 6720 additional arguments. To register and find out the current 6721 settings for extended allocation functions, the following 6722 functions are provided: 6723 6724 CRYPTO_set_mem_ex_functions 6725 CRYPTO_set_locked_mem_ex_functions 6726 CRYPTO_get_mem_ex_functions 6727 CRYPTO_get_locked_mem_ex_functions 6728 6729 These work the same way as CRYPTO_set_mem_functions and friends. 6730 CRYPTO_get_[locked_]mem_functions now writes 0 where such an 6731 extended allocation function is enabled. 6732 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where 6733 a conventional allocation function is enabled. 6734 [Richard Levitte, Bodo Moeller] 6735 6736 *) Finish off removing the remaining LHASH function pointer casts. 6737 There should no longer be any prototype-casting required when using 6738 the LHASH abstraction, and any casts that remain are "bugs". See 6739 the callback types and macros at the head of lhash.h for details 6740 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example). 6741 [Geoff Thorpe] 6742 6743 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant. 6744 If /dev/[u]random devices are not available or do not return enough 6745 entropy, EGD style sockets (served by EGD or PRNGD) will automatically 6746 be queried. 6747 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and 6748 /etc/entropy will be queried once each in this sequence, quering stops 6749 when enough entropy was collected without querying more sockets. 6750 [Lutz Jaenicke] 6751 6752 *) Change the Unix RAND_poll() variant to be able to poll several 6753 random devices, as specified by DEVRANDOM, until a sufficient amount 6754 of data has been collected. We spend at most 10 ms on each file 6755 (select timeout) and read in non-blocking mode. DEVRANDOM now 6756 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom" 6757 (previously it was just the string "/dev/urandom"), so on typical 6758 platforms the 10 ms delay will never occur. 6759 Also separate out the Unix variant to its own file, rand_unix.c. 6760 For VMS, there's a currently-empty rand_vms.c. 6761 [Richard Levitte] 6762 6763 *) Move OCSP client related routines to ocsp_cl.c. These 6764 provide utility functions which an application needing 6765 to issue a request to an OCSP responder and analyse the 6766 response will typically need: as opposed to those which an 6767 OCSP responder itself would need which will be added later. 6768 6769 OCSP_request_sign() signs an OCSP request with an API similar 6770 to PKCS7_sign(). OCSP_response_status() returns status of OCSP 6771 response. OCSP_response_get1_basic() extracts basic response 6772 from response. OCSP_resp_find_status(): finds and extracts status 6773 information from an OCSP_CERTID structure (which will be created 6774 when the request structure is built). These are built from lower 6775 level functions which work on OCSP_SINGLERESP structures but 6776 wont normally be used unless the application wishes to examine 6777 extensions in the OCSP response for example. 6778 6779 Replace nonce routines with a pair of functions. 6780 OCSP_request_add1_nonce() adds a nonce value and optionally 6781 generates a random value. OCSP_check_nonce() checks the 6782 validity of the nonce in an OCSP response. 6783 [Steve Henson] 6784 6785 *) Change function OCSP_request_add() to OCSP_request_add0_id(). 6786 This doesn't copy the supplied OCSP_CERTID and avoids the 6787 need to free up the newly created id. Change return type 6788 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure. 6789 This can then be used to add extensions to the request. 6790 Deleted OCSP_request_new(), since most of its functionality 6791 is now in OCSP_REQUEST_new() (and the case insensitive name 6792 clash) apart from the ability to set the request name which 6793 will be added elsewhere. 6794 [Steve Henson] 6795 6796 *) Update OCSP API. Remove obsolete extensions argument from 6797 various functions. Extensions are now handled using the new 6798 OCSP extension code. New simple OCSP HTTP function which 6799 can be used to send requests and parse the response. 6800 [Steve Henson] 6801 6802 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new 6803 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN 6804 uses the special reorder version of SET OF to sort the attributes 6805 and reorder them to match the encoded order. This resolves a long 6806 standing problem: a verify on a PKCS7 structure just after signing 6807 it used to fail because the attribute order did not match the 6808 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes: 6809 it uses the received order. This is necessary to tolerate some broken 6810 software that does not order SET OF. This is handled by encoding 6811 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class) 6812 to produce the required SET OF. 6813 [Steve Henson] 6814 6815 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and 6816 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header 6817 files to get correct declarations of the ASN.1 item variables. 6818 [Richard Levitte] 6819 6820 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many 6821 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs: 6822 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was 6823 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i(). 6824 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant 6825 ASN1_ITEM and no wrapper functions. 6826 [Steve Henson] 6827 6828 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These 6829 replace the old function pointer based I/O routines. Change most of 6830 the *_d2i_bio() and *_d2i_fp() functions to use these. 6831 [Steve Henson] 6832 6833 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor 6834 lines, recognice more "algorithms" that can be deselected, and make 6835 it complain about algorithm deselection that isn't recognised. 6836 [Richard Levitte] 6837 6838 *) New ASN1 functions to handle dup, sign, verify, digest, pack and 6839 unpack operations in terms of ASN1_ITEM. Modify existing wrappers 6840 to use new functions. Add NO_ASN1_OLD which can be set to remove 6841 some old style ASN1 functions: this can be used to determine if old 6842 code will still work when these eventually go away. 6843 [Steve Henson] 6844 6845 *) New extension functions for OCSP structures, these follow the 6846 same conventions as certificates and CRLs. 6847 [Steve Henson] 6848 6849 *) New function X509V3_add1_i2d(). This automatically encodes and 6850 adds an extension. Its behaviour can be customised with various 6851 flags to append, replace or delete. Various wrappers added for 6852 certifcates and CRLs. 6853 [Steve Henson] 6854 6855 *) Fix to avoid calling the underlying ASN1 print routine when 6856 an extension cannot be parsed. Correct a typo in the 6857 OCSP_SERVICELOC extension. Tidy up print OCSP format. 6858 [Steve Henson] 6859 6860 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate 6861 entries for variables. 6862 [Steve Henson] 6863 6864 *) Add functionality to apps/openssl.c for detecting locking 6865 problems: As the program is single-threaded, all we have 6866 to do is register a locking callback using an array for 6867 storing which locks are currently held by the program. 6868 [Bodo Moeller] 6869 6870 *) Use a lock around the call to CRYPTO_get_ex_new_index() in 6871 SSL_get_ex_data_X509_STORE_idx(), which is used in 6872 ssl_verify_cert_chain() and thus can be called at any time 6873 during TLS/SSL handshakes so that thread-safety is essential. 6874 Unfortunately, the ex_data design is not at all suited 6875 for multi-threaded use, so it probably should be abolished. 6876 [Bodo Moeller] 6877 6878 *) Added Broadcom "ubsec" ENGINE to OpenSSL. 6879 [Broadcom, tweaked and integrated by Geoff Thorpe] 6880 6881 *) Move common extension printing code to new function 6882 X509V3_print_extensions(). Reorganise OCSP print routines and 6883 implement some needed OCSP ASN1 functions. Add OCSP extensions. 6884 [Steve Henson] 6885 6886 *) New function X509_signature_print() to remove duplication in some 6887 print routines. 6888 [Steve Henson] 6889 6890 *) Add a special meaning when SET OF and SEQUENCE OF flags are both 6891 set (this was treated exactly the same as SET OF previously). This 6892 is used to reorder the STACK representing the structure to match the 6893 encoding. This will be used to get round a problem where a PKCS7 6894 structure which was signed could not be verified because the STACK 6895 order did not reflect the encoded order. 6896 [Steve Henson] 6897 6898 *) Reimplement the OCSP ASN1 module using the new code. 6899 [Steve Henson] 6900 6901 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure 6902 for its ASN1 operations. The old style function pointers still exist 6903 for now but they will eventually go away. 6904 [Steve Henson] 6905 6906 *) Merge in replacement ASN1 code from the ASN1 branch. This almost 6907 completely replaces the old ASN1 functionality with a table driven 6908 encoder and decoder which interprets an ASN1_ITEM structure describing 6909 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is 6910 largely maintained. Almost all of the old asn1_mac.h macro based ASN1 6911 has also been converted to the new form. 6912 [Steve Henson] 6913 6914 *) Change BN_mod_exp_recp so that negative moduli are tolerated 6915 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set 6916 so that BN_mod_exp_mont and BN_mod_exp_mont_word work 6917 for negative moduli. 6918 [Bodo Moeller] 6919 6920 *) Fix BN_uadd and BN_usub: Always return non-negative results instead 6921 of not touching the result's sign bit. 6922 [Bodo Moeller] 6923 6924 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be 6925 set. 6926 [Bodo Moeller] 6927 6928 *) Changed the LHASH code to use prototypes for callbacks, and created 6929 macros to declare and implement thin (optionally static) functions 6930 that provide type-safety and avoid function pointer casting for the 6931 type-specific callbacks. 6932 [Geoff Thorpe] 6933 6934 *) Added Kerberos Cipher Suites to be used with TLS, as written in 6935 RFC 2712. 6936 [Veers Staats <staatsvr@asc.hpc.mil>, 6937 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte] 6938 6939 *) Reformat the FAQ so the different questions and answers can be divided 6940 in sections depending on the subject. 6941 [Richard Levitte] 6942 6943 *) Have the zlib compression code load ZLIB.DLL dynamically under 6944 Windows. 6945 [Richard Levitte] 6946 6947 *) New function BN_mod_sqrt for computing square roots modulo a prime 6948 (using the probabilistic Tonelli-Shanks algorithm unless 6949 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can 6950 be handled deterministically). 6951 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] 6952 6953 *) Make BN_mod_inverse faster by explicitly handling small quotients 6954 in the Euclid loop. (Speed gain about 20% for small moduli [256 or 6955 512 bits], about 30% for larger ones [1024 or 2048 bits].) 6956 [Bodo Moeller] 6957 6958 *) New function BN_kronecker. 6959 [Bodo Moeller] 6960 6961 *) Fix BN_gcd so that it works on negative inputs; the result is 6962 positive unless both parameters are zero. 6963 Previously something reasonably close to an infinite loop was 6964 possible because numbers could be growing instead of shrinking 6965 in the implementation of Euclid's algorithm. 6966 [Bodo Moeller] 6967 6968 *) Fix BN_is_word() and BN_is_one() macros to take into account the 6969 sign of the number in question. 6970 6971 Fix BN_is_word(a,w) to work correctly for w == 0. 6972 6973 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w) 6974 because its test if the absolute value of 'a' equals 'w'. 6975 Note that BN_abs_is_word does *not* handle w == 0 reliably; 6976 it exists mostly for use in the implementations of BN_is_zero(), 6977 BN_is_one(), and BN_is_word(). 6978 [Bodo Moeller] 6979 6980 *) New function BN_swap. 6981 [Bodo Moeller] 6982 6983 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that 6984 the exponentiation functions are more likely to produce reasonable 6985 results on negative inputs. 6986 [Bodo Moeller] 6987 6988 *) Change BN_mod_mul so that the result is always non-negative. 6989 Previously, it could be negative if one of the factors was negative; 6990 I don't think anyone really wanted that behaviour. 6991 [Bodo Moeller] 6992 6993 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c 6994 (except for exponentiation, which stays in crypto/bn/bn_exp.c, 6995 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c) 6996 and add new functions: 6997 6998 BN_nnmod 6999 BN_mod_sqr 7000 BN_mod_add 7001 BN_mod_add_quick 7002 BN_mod_sub 7003 BN_mod_sub_quick 7004 BN_mod_lshift1 7005 BN_mod_lshift1_quick 7006 BN_mod_lshift 7007 BN_mod_lshift_quick 7008 7009 These functions always generate non-negative results. 7010 7011 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r 7012 such that |m| < r < 0, BN_nnmod will output rem + |m| instead). 7013 7014 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as 7015 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b] 7016 be reduced modulo m. 7017 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] 7018 7019#if 0 7020 The following entry accidentily appeared in the CHANGES file 7021 distributed with OpenSSL 0.9.7. The modifications described in 7022 it do *not* apply to OpenSSL 0.9.7. 7023 7024 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there 7025 was actually never needed) and in BN_mul(). The removal in BN_mul() 7026 required a small change in bn_mul_part_recursive() and the addition 7027 of the functions bn_cmp_part_words(), bn_sub_part_words() and 7028 bn_add_part_words(), which do the same thing as bn_cmp_words(), 7029 bn_sub_words() and bn_add_words() except they take arrays with 7030 differing sizes. 7031 [Richard Levitte] 7032#endif 7033 7034 *) In 'openssl passwd', verify passwords read from the terminal 7035 unless the '-salt' option is used (which usually means that 7036 verification would just waste user's time since the resulting 7037 hash is going to be compared with some given password hash) 7038 or the new '-noverify' option is used. 7039 7040 This is an incompatible change, but it does not affect 7041 non-interactive use of 'openssl passwd' (passwords on the command 7042 line, '-stdin' option, '-in ...' option) and thus should not 7043 cause any problems. 7044 [Bodo Moeller] 7045 7046 *) Remove all references to RSAref, since there's no more need for it. 7047 [Richard Levitte] 7048 7049 *) Make DSO load along a path given through an environment variable 7050 (SHLIB_PATH) with shl_load(). 7051 [Richard Levitte] 7052 7053 *) Constify the ENGINE code as a result of BIGNUM constification. 7054 Also constify the RSA code and most things related to it. In a 7055 few places, most notable in the depth of the ASN.1 code, ugly 7056 casts back to non-const were required (to be solved at a later 7057 time) 7058 [Richard Levitte] 7059 7060 *) Make it so the openssl application has all engines loaded by default. 7061 [Richard Levitte] 7062 7063 *) Constify the BIGNUM routines a little more. 7064 [Richard Levitte] 7065 7066 *) Add the following functions: 7067 7068 ENGINE_load_cswift() 7069 ENGINE_load_chil() 7070 ENGINE_load_atalla() 7071 ENGINE_load_nuron() 7072 ENGINE_load_builtin_engines() 7073 7074 That way, an application can itself choose if external engines that 7075 are built-in in OpenSSL shall ever be used or not. The benefit is 7076 that applications won't have to be linked with libdl or other dso 7077 libraries unless it's really needed. 7078 7079 Changed 'openssl engine' to load all engines on demand. 7080 Changed the engine header files to avoid the duplication of some 7081 declarations (they differed!). 7082 [Richard Levitte] 7083 7084 *) 'openssl engine' can now list capabilities. 7085 [Richard Levitte] 7086 7087 *) Better error reporting in 'openssl engine'. 7088 [Richard Levitte] 7089 7090 *) Never call load_dh_param(NULL) in s_server. 7091 [Bodo Moeller] 7092 7093 *) Add engine application. It can currently list engines by name and 7094 identity, and test if they are actually available. 7095 [Richard Levitte] 7096 7097 *) Improve RPM specification file by forcing symbolic linking and making 7098 sure the installed documentation is also owned by root.root. 7099 [Damien Miller <djm@mindrot.org>] 7100 7101 *) Give the OpenSSL applications more possibilities to make use of 7102 keys (public as well as private) handled by engines. 7103 [Richard Levitte] 7104 7105 *) Add OCSP code that comes from CertCo. 7106 [Richard Levitte] 7107 7108 *) Add VMS support for the Rijndael code. 7109 [Richard Levitte] 7110 7111 *) Added untested support for Nuron crypto accelerator. 7112 [Ben Laurie] 7113 7114 *) Add support for external cryptographic devices. This code was 7115 previously distributed separately as the "engine" branch. 7116 [Geoff Thorpe, Richard Levitte] 7117 7118 *) Rework the filename-translation in the DSO code. It is now possible to 7119 have far greater control over how a "name" is turned into a filename 7120 depending on the operating environment and any oddities about the 7121 different shared library filenames on each system. 7122 [Geoff Thorpe] 7123 7124 *) Support threads on FreeBSD-elf in Configure. 7125 [Richard Levitte] 7126 7127 *) Fix for SHA1 assembly problem with MASM: it produces 7128 warnings about corrupt line number information when assembling 7129 with debugging information. This is caused by the overlapping 7130 of two sections. 7131 [Bernd Matthes <mainbug@celocom.de>, Steve Henson] 7132 7133 *) NCONF changes. 7134 NCONF_get_number() has no error checking at all. As a replacement, 7135 NCONF_get_number_e() is defined (_e for "error checking") and is 7136 promoted strongly. The old NCONF_get_number is kept around for 7137 binary backward compatibility. 7138 Make it possible for methods to load from something other than a BIO, 7139 by providing a function pointer that is given a name instead of a BIO. 7140 For example, this could be used to load configuration data from an 7141 LDAP server. 7142 [Richard Levitte] 7143 7144 *) Fix for non blocking accept BIOs. Added new I/O special reason 7145 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs 7146 with non blocking I/O was not possible because no retry code was 7147 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover 7148 this case. 7149 [Steve Henson] 7150 7151 *) Added the beginnings of Rijndael support. 7152 [Ben Laurie] 7153 7154 *) Fix for bug in DirectoryString mask setting. Add support for 7155 X509_NAME_print_ex() in 'req' and X509_print_ex() function 7156 to allow certificate printing to more controllable, additional 7157 'certopt' option to 'x509' to allow new printing options to be 7158 set. 7159 [Steve Henson] 7160 7161 *) Clean old EAY MD5 hack from e_os.h. 7162 [Richard Levitte] 7163 7164 Changes between 0.9.6l and 0.9.6m [17 Mar 2004] 7165 7166 *) Fix null-pointer assignment in do_change_cipher_spec() revealed 7167 by using the Codenomicon TLS Test Tool (CVE-2004-0079) 7168 [Joe Orton, Steve Henson] 7169 7170 Changes between 0.9.6k and 0.9.6l [04 Nov 2003] 7171 7172 *) Fix additional bug revealed by the NISCC test suite: 7173 7174 Stop bug triggering large recursion when presented with 7175 certain ASN.1 tags (CVE-2003-0851) 7176 [Steve Henson] 7177 7178 Changes between 0.9.6j and 0.9.6k [30 Sep 2003] 7179 7180 *) Fix various bugs revealed by running the NISCC test suite: 7181 7182 Stop out of bounds reads in the ASN1 code when presented with 7183 invalid tags (CVE-2003-0543 and CVE-2003-0544). 7184 7185 If verify callback ignores invalid public key errors don't try to check 7186 certificate signature with the NULL public key. 7187 7188 [Steve Henson] 7189 7190 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate 7191 if the server requested one: as stated in TLS 1.0 and SSL 3.0 7192 specifications. 7193 [Steve Henson] 7194 7195 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional 7196 extra data after the compression methods not only for TLS 1.0 7197 but also for SSL 3.0 (as required by the specification). 7198 [Bodo Moeller; problem pointed out by Matthias Loepfe] 7199 7200 *) Change X509_certificate_type() to mark the key as exported/exportable 7201 when it's 512 *bits* long, not 512 bytes. 7202 [Richard Levitte] 7203 7204 Changes between 0.9.6i and 0.9.6j [10 Apr 2003] 7205 7206 *) Countermeasure against the Klima-Pokorny-Rosa extension of 7207 Bleichbacher's attack on PKCS #1 v1.5 padding: treat 7208 a protocol version number mismatch like a decryption error 7209 in ssl3_get_client_key_exchange (ssl/s3_srvr.c). 7210 [Bodo Moeller] 7211 7212 *) Turn on RSA blinding by default in the default implementation 7213 to avoid a timing attack. Applications that don't want it can call 7214 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. 7215 They would be ill-advised to do so in most cases. 7216 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] 7217 7218 *) Change RSA blinding code so that it works when the PRNG is not 7219 seeded (in this case, the secret RSA exponent is abused as 7220 an unpredictable seed -- if it is not unpredictable, there 7221 is no point in blinding anyway). Make RSA blinding thread-safe 7222 by remembering the creator's thread ID in rsa->blinding and 7223 having all other threads use local one-time blinding factors 7224 (this requires more computation than sharing rsa->blinding, but 7225 avoids excessive locking; and if an RSA object is not shared 7226 between threads, blinding will still be very fast). 7227 [Bodo Moeller] 7228 7229 Changes between 0.9.6h and 0.9.6i [19 Feb 2003] 7230 7231 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked 7232 via timing by performing a MAC computation even if incorrrect 7233 block cipher padding has been found. This is a countermeasure 7234 against active attacks where the attacker has to distinguish 7235 between bad padding and a MAC verification error. (CVE-2003-0078) 7236 7237 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), 7238 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and 7239 Martin Vuagnoux (EPFL, Ilion)] 7240 7241 Changes between 0.9.6g and 0.9.6h [5 Dec 2002] 7242 7243 *) New function OPENSSL_cleanse(), which is used to cleanse a section of 7244 memory from it's contents. This is done with a counter that will 7245 place alternating values in each byte. This can be used to solve 7246 two issues: 1) the removal of calls to memset() by highly optimizing 7247 compilers, and 2) cleansing with other values than 0, since those can 7248 be read through on certain media, for example a swap space on disk. 7249 [Geoff Thorpe] 7250 7251 *) Bugfix: client side session caching did not work with external caching, 7252 because the session->cipher setting was not restored when reloading 7253 from the external cache. This problem was masked, when 7254 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set. 7255 (Found by Steve Haslam <steve@araqnid.ddts.net>.) 7256 [Lutz Jaenicke] 7257 7258 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total 7259 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33. 7260 [Zeev Lieber <zeev-l@yahoo.com>] 7261 7262 *) Undo an undocumented change introduced in 0.9.6e which caused 7263 repeated calls to OpenSSL_add_all_ciphers() and 7264 OpenSSL_add_all_digests() to be ignored, even after calling 7265 EVP_cleanup(). 7266 [Richard Levitte] 7267 7268 *) Change the default configuration reader to deal with last line not 7269 being properly terminated. 7270 [Richard Levitte] 7271 7272 *) Change X509_NAME_cmp() so it applies the special rules on handling 7273 DN values that are of type PrintableString, as well as RDNs of type 7274 emailAddress where the value has the type ia5String. 7275 [stefank@valicert.com via Richard Levitte] 7276 7277 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half 7278 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently 7279 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be 7280 the bitwise-OR of the two for use by the majority of applications 7281 wanting this behaviour, and update the docs. The documented 7282 behaviour and actual behaviour were inconsistent and had been 7283 changing anyway, so this is more a bug-fix than a behavioural 7284 change. 7285 [Geoff Thorpe, diagnosed by Nadav Har'El] 7286 7287 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c 7288 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes). 7289 [Bodo Moeller] 7290 7291 *) Fix initialization code race conditions in 7292 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(), 7293 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(), 7294 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(), 7295 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(), 7296 ssl2_get_cipher_by_char(), 7297 ssl3_get_cipher_by_char(). 7298 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller] 7299 7300 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after 7301 the cached sessions are flushed, as the remove_cb() might use ex_data 7302 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com> 7303 (see [openssl.org #212]). 7304 [Geoff Thorpe, Lutz Jaenicke] 7305 7306 *) Fix typo in OBJ_txt2obj which incorrectly passed the content 7307 length, instead of the encoding length to d2i_ASN1_OBJECT. 7308 [Steve Henson] 7309 7310 Changes between 0.9.6f and 0.9.6g [9 Aug 2002] 7311 7312 *) [In 0.9.6g-engine release:] 7313 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall'). 7314 [Lynn Gazis <lgazis@rainbow.com>] 7315 7316 Changes between 0.9.6e and 0.9.6f [8 Aug 2002] 7317 7318 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX 7319 and get fix the header length calculation. 7320 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>, 7321 Alon Kantor <alonk@checkpoint.com> (and others), 7322 Steve Henson] 7323 7324 *) Use proper error handling instead of 'assertions' in buffer 7325 overflow checks added in 0.9.6e. This prevents DoS (the 7326 assertions could call abort()). 7327 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller] 7328 7329 Changes between 0.9.6d and 0.9.6e [30 Jul 2002] 7330 7331 *) Add various sanity checks to asn1_get_length() to reject 7332 the ASN1 length bytes if they exceed sizeof(long), will appear 7333 negative or the content length exceeds the length of the 7334 supplied buffer. 7335 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>] 7336 7337 *) Fix cipher selection routines: ciphers without encryption had no flags 7338 for the cipher strength set and where therefore not handled correctly 7339 by the selection routines (PR #130). 7340 [Lutz Jaenicke] 7341 7342 *) Fix EVP_dsa_sha macro. 7343 [Nils Larsch] 7344 7345 *) New option 7346 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS 7347 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure 7348 that was added in OpenSSL 0.9.6d. 7349 7350 As the countermeasure turned out to be incompatible with some 7351 broken SSL implementations, the new option is part of SSL_OP_ALL. 7352 SSL_OP_ALL is usually employed when compatibility with weird SSL 7353 implementations is desired (e.g. '-bugs' option to 's_client' and 7354 's_server'), so the new option is automatically set in many 7355 applications. 7356 [Bodo Moeller] 7357 7358 *) Changes in security patch: 7359 7360 Changes marked "(CHATS)" were sponsored by the Defense Advanced 7361 Research Projects Agency (DARPA) and Air Force Research Laboratory, 7362 Air Force Materiel Command, USAF, under agreement number 7363 F30602-01-2-0537. 7364 7365 *) Add various sanity checks to asn1_get_length() to reject 7366 the ASN1 length bytes if they exceed sizeof(long), will appear 7367 negative or the content length exceeds the length of the 7368 supplied buffer. (CVE-2002-0659) 7369 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>] 7370 7371 *) Assertions for various potential buffer overflows, not known to 7372 happen in practice. 7373 [Ben Laurie (CHATS)] 7374 7375 *) Various temporary buffers to hold ASCII versions of integers were 7376 too small for 64 bit platforms. (CVE-2002-0655) 7377 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)> 7378 7379 *) Remote buffer overflow in SSL3 protocol - an attacker could 7380 supply an oversized session ID to a client. (CVE-2002-0656) 7381 [Ben Laurie (CHATS)] 7382 7383 *) Remote buffer overflow in SSL2 protocol - an attacker could 7384 supply an oversized client master key. (CVE-2002-0656) 7385 [Ben Laurie (CHATS)] 7386 7387 Changes between 0.9.6c and 0.9.6d [9 May 2002] 7388 7389 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not 7390 encoded as NULL) with id-dsa-with-sha1. 7391 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller] 7392 7393 *) Check various X509_...() return values in apps/req.c. 7394 [Nils Larsch <nla@trustcenter.de>] 7395 7396 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines: 7397 an end-of-file condition would erronously be flagged, when the CRLF 7398 was just at the end of a processed block. The bug was discovered when 7399 processing data through a buffering memory BIO handing the data to a 7400 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov 7401 <ptsekov@syntrex.com> and Nedelcho Stanev. 7402 [Lutz Jaenicke] 7403 7404 *) Implement a countermeasure against a vulnerability recently found 7405 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment 7406 before application data chunks to avoid the use of known IVs 7407 with data potentially chosen by the attacker. 7408 [Bodo Moeller] 7409 7410 *) Fix length checks in ssl3_get_client_hello(). 7411 [Bodo Moeller] 7412 7413 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently 7414 to prevent ssl3_read_internal() from incorrectly assuming that 7415 ssl3_read_bytes() found application data while handshake 7416 processing was enabled when in fact s->s3->in_read_app_data was 7417 merely automatically cleared during the initial handshake. 7418 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>] 7419 7420 *) Fix object definitions for Private and Enterprise: they were not 7421 recognized in their shortname (=lowercase) representation. Extend 7422 obj_dat.pl to issue an error when using undefined keywords instead 7423 of silently ignoring the problem (Svenning Sorensen 7424 <sss@sss.dnsalias.net>). 7425 [Lutz Jaenicke] 7426 7427 *) Fix DH_generate_parameters() so that it works for 'non-standard' 7428 generators, i.e. generators other than 2 and 5. (Previously, the 7429 code did not properly initialise the 'add' and 'rem' values to 7430 BN_generate_prime().) 7431 7432 In the new general case, we do not insist that 'generator' is 7433 actually a primitive root: This requirement is rather pointless; 7434 a generator of the order-q subgroup is just as good, if not 7435 better. 7436 [Bodo Moeller] 7437 7438 *) Map new X509 verification errors to alerts. Discovered and submitted by 7439 Tom Wu <tom@arcot.com>. 7440 [Lutz Jaenicke] 7441 7442 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from 7443 returning non-zero before the data has been completely received 7444 when using non-blocking I/O. 7445 [Bodo Moeller; problem pointed out by John Hughes] 7446 7447 *) Some of the ciphers missed the strength entry (SSL_LOW etc). 7448 [Ben Laurie, Lutz Jaenicke] 7449 7450 *) Fix bug in SSL_clear(): bad sessions were not removed (found by 7451 Yoram Zahavi <YoramZ@gilian.com>). 7452 [Lutz Jaenicke] 7453 7454 *) Add information about CygWin 1.3 and on, and preserve proper 7455 configuration for the versions before that. 7456 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte] 7457 7458 *) Make removal from session cache (SSL_CTX_remove_session()) more robust: 7459 check whether we deal with a copy of a session and do not delete from 7460 the cache in this case. Problem reported by "Izhar Shoshani Levi" 7461 <izhar@checkpoint.com>. 7462 [Lutz Jaenicke] 7463 7464 *) Do not store session data into the internal session cache, if it 7465 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 7466 flag is set). Proposed by Aslam <aslam@funk.com>. 7467 [Lutz Jaenicke] 7468 7469 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested 7470 value is 0. 7471 [Richard Levitte] 7472 7473 *) [In 0.9.6d-engine release:] 7474 Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). 7475 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 7476 7477 *) Add the configuration target linux-s390x. 7478 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte] 7479 7480 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of 7481 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag 7482 variable as an indication that a ClientHello message has been 7483 received. As the flag value will be lost between multiple 7484 invocations of ssl3_accept when using non-blocking I/O, the 7485 function may not be aware that a handshake has actually taken 7486 place, thus preventing a new session from being added to the 7487 session cache. 7488 7489 To avoid this problem, we now set s->new_session to 2 instead of 7490 using a local variable. 7491 [Lutz Jaenicke, Bodo Moeller] 7492 7493 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c) 7494 if the SSL_R_LENGTH_MISMATCH error is detected. 7495 [Geoff Thorpe, Bodo Moeller] 7496 7497 *) New 'shared_ldflag' column in Configure platform table. 7498 [Richard Levitte] 7499 7500 *) Fix EVP_CIPHER_mode macro. 7501 ["Dan S. Camper" <dan@bti.net>] 7502 7503 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown 7504 type, we must throw them away by setting rr->length to 0. 7505 [D P Chang <dpc@qualys.com>] 7506 7507 Changes between 0.9.6b and 0.9.6c [21 dec 2001] 7508 7509 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl 7510 <Dominikus.Scherkl@biodata.com>. (The previous implementation 7511 worked incorrectly for those cases where range = 10..._2 and 7512 3*range is two bits longer than range.) 7513 [Bodo Moeller] 7514 7515 *) Only add signing time to PKCS7 structures if it is not already 7516 present. 7517 [Steve Henson] 7518 7519 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce", 7520 OBJ_ld_ce should be OBJ_id_ce. 7521 Also some ip-pda OIDs in crypto/objects/objects.txt were 7522 incorrect (cf. RFC 3039). 7523 [Matt Cooper, Frederic Giudicelli, Bodo Moeller] 7524 7525 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid() 7526 returns early because it has nothing to do. 7527 [Andy Schneider <andy.schneider@bjss.co.uk>] 7528 7529 *) [In 0.9.6c-engine release:] 7530 Fix mutex callback return values in crypto/engine/hw_ncipher.c. 7531 [Andy Schneider <andy.schneider@bjss.co.uk>] 7532 7533 *) [In 0.9.6c-engine release:] 7534 Add support for Cryptographic Appliance's keyserver technology. 7535 (Use engine 'keyclient') 7536 [Cryptographic Appliances and Geoff Thorpe] 7537 7538 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89' 7539 is called via tools/c89.sh because arguments have to be 7540 rearranged (all '-L' options must appear before the first object 7541 modules). 7542 [Richard Shapiro <rshapiro@abinitio.com>] 7543 7544 *) [In 0.9.6c-engine release:] 7545 Add support for Broadcom crypto accelerator cards, backported 7546 from 0.9.7. 7547 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox] 7548 7549 *) [In 0.9.6c-engine release:] 7550 Add support for SureWare crypto accelerator cards from 7551 Baltimore Technologies. (Use engine 'sureware') 7552 [Baltimore Technologies and Mark Cox] 7553 7554 *) [In 0.9.6c-engine release:] 7555 Add support for crypto accelerator cards from Accelerated 7556 Encryption Processing, www.aep.ie. (Use engine 'aep') 7557 [AEP Inc. and Mark Cox] 7558 7559 *) Add a configuration entry for gcc on UnixWare. 7560 [Gary Benson <gbenson@redhat.com>] 7561 7562 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake 7563 messages are stored in a single piece (fixed-length part and 7564 variable-length part combined) and fix various bugs found on the way. 7565 [Bodo Moeller] 7566 7567 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname() 7568 instead. BIO_gethostbyname() does not know what timeouts are 7569 appropriate, so entries would stay in cache even when they have 7570 become invalid. 7571 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com> 7572 7573 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when 7574 faced with a pathologically small ClientHello fragment that does 7575 not contain client_version: Instead of aborting with an error, 7576 simply choose the highest available protocol version (i.e., 7577 TLS 1.0 unless it is disabled). In practice, ClientHello 7578 messages are never sent like this, but this change gives us 7579 strictly correct behaviour at least for TLS. 7580 [Bodo Moeller] 7581 7582 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear() 7583 never resets s->method to s->ctx->method when called from within 7584 one of the SSL handshake functions. 7585 [Bodo Moeller; problem pointed out by Niko Baric] 7586 7587 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert 7588 (sent using the client's version number) if client_version is 7589 smaller than the protocol version in use. Also change 7590 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if 7591 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then 7592 the client will at least see that alert. 7593 [Bodo Moeller] 7594 7595 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation 7596 correctly. 7597 [Bodo Moeller] 7598 7599 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a 7600 client receives HelloRequest while in a handshake. 7601 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>] 7602 7603 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C 7604 should end in 'break', not 'goto end' which circuments various 7605 cleanups done in state SSL_ST_OK. But session related stuff 7606 must be disabled for SSL_ST_OK in the case that we just sent a 7607 HelloRequest. 7608 7609 Also avoid some overhead by not calling ssl_init_wbio_buffer() 7610 before just sending a HelloRequest. 7611 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>] 7612 7613 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't 7614 reveal whether illegal block cipher padding was found or a MAC 7615 verification error occured. (Neither SSLerr() codes nor alerts 7616 are directly visible to potential attackers, but the information 7617 may leak via logfiles.) 7618 7619 Similar changes are not required for the SSL 2.0 implementation 7620 because the number of padding bytes is sent in clear for SSL 2.0, 7621 and the extra bytes are just ignored. However ssl/s2_pkt.c 7622 failed to verify that the purported number of padding bytes is in 7623 the legal range. 7624 [Bodo Moeller] 7625 7626 *) Add OpenUNIX-8 support including shared libraries 7627 (Boyd Lynn Gerber <gerberb@zenez.com>). 7628 [Lutz Jaenicke] 7629 7630 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid 7631 'wristwatch attack' using huge encoding parameters (cf. 7632 James H. Manger's CRYPTO 2001 paper). Note that the 7633 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use 7634 encoding parameters and hence was not vulnerable. 7635 [Bodo Moeller] 7636 7637 *) BN_sqr() bug fix. 7638 [Ulf M��ller, reported by Jim Ellis <jim.ellis@cavium.com>] 7639 7640 *) Rabin-Miller test analyses assume uniformly distributed witnesses, 7641 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand() 7642 followed by modular reduction. 7643 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>] 7644 7645 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range() 7646 equivalent based on BN_pseudo_rand() instead of BN_rand(). 7647 [Bodo Moeller] 7648 7649 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB). 7650 This function was broken, as the check for a new client hello message 7651 to handle SGC did not allow these large messages. 7652 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.) 7653 [Lutz Jaenicke] 7654 7655 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long](). 7656 [Lutz Jaenicke] 7657 7658 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl() 7659 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>). 7660 [Lutz Jaenicke] 7661 7662 *) Rework the configuration and shared library support for Tru64 Unix. 7663 The configuration part makes use of modern compiler features and 7664 still retains old compiler behavior for those that run older versions 7665 of the OS. The shared library support part includes a variant that 7666 uses the RPATH feature, and is available through the special 7667 configuration target "alpha-cc-rpath", which will never be selected 7668 automatically. 7669 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte] 7670 7671 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message() 7672 with the same message size as in ssl3_get_certificate_request(). 7673 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest 7674 messages might inadvertently be reject as too long. 7675 [Petr Lampa <lampa@fee.vutbr.cz>] 7676 7677 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX). 7678 [Andy Polyakov] 7679 7680 *) Modified SSL library such that the verify_callback that has been set 7681 specificly for an SSL object with SSL_set_verify() is actually being 7682 used. Before the change, a verify_callback set with this function was 7683 ignored and the verify_callback() set in the SSL_CTX at the time of 7684 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced 7685 to allow the necessary settings. 7686 [Lutz Jaenicke] 7687 7688 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c 7689 explicitly to NULL, as at least on Solaris 8 this seems not always to be 7690 done automatically (in contradiction to the requirements of the C 7691 standard). This made problems when used from OpenSSH. 7692 [Lutz Jaenicke] 7693 7694 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored 7695 dh->length and always used 7696 7697 BN_rand_range(priv_key, dh->p). 7698 7699 BN_rand_range() is not necessary for Diffie-Hellman, and this 7700 specific range makes Diffie-Hellman unnecessarily inefficient if 7701 dh->length (recommended exponent length) is much smaller than the 7702 length of dh->p. We could use BN_rand_range() if the order of 7703 the subgroup was stored in the DH structure, but we only have 7704 dh->length. 7705 7706 So switch back to 7707 7708 BN_rand(priv_key, l, ...) 7709 7710 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1 7711 otherwise. 7712 [Bodo Moeller] 7713 7714 *) In 7715 7716 RSA_eay_public_encrypt 7717 RSA_eay_private_decrypt 7718 RSA_eay_private_encrypt (signing) 7719 RSA_eay_public_decrypt (signature verification) 7720 7721 (default implementations for RSA_public_encrypt, 7722 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt), 7723 always reject numbers >= n. 7724 [Bodo Moeller] 7725 7726 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2 7727 to synchronize access to 'locking_thread'. This is necessary on 7728 systems where access to 'locking_thread' (an 'unsigned long' 7729 variable) is not atomic. 7730 [Bodo Moeller] 7731 7732 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID 7733 *before* setting the 'crypto_lock_rand' flag. The previous code had 7734 a race condition if 0 is a valid thread ID. 7735 [Travis Vitek <vitek@roguewave.com>] 7736 7737 *) Add support for shared libraries under Irix. 7738 [Albert Chin-A-Young <china@thewrittenword.com>] 7739 7740 *) Add configuration option to build on Linux on both big-endian and 7741 little-endian MIPS. 7742 [Ralf Baechle <ralf@uni-koblenz.de>] 7743 7744 *) Add the possibility to create shared libraries on HP-UX. 7745 [Richard Levitte] 7746 7747 Changes between 0.9.6a and 0.9.6b [9 Jul 2001] 7748 7749 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c) 7750 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by 7751 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>: 7752 PRNG state recovery was possible based on the output of 7753 one PRNG request appropriately sized to gain knowledge on 7754 'md' followed by enough consecutive 1-byte PRNG requests 7755 to traverse all of 'state'. 7756 7757 1. When updating 'md_local' (the current thread's copy of 'md') 7758 during PRNG output generation, hash all of the previous 7759 'md_local' value, not just the half used for PRNG output. 7760 7761 2. Make the number of bytes from 'state' included into the hash 7762 independent from the number of PRNG bytes requested. 7763 7764 The first measure alone would be sufficient to avoid 7765 Markku-Juhani's attack. (Actually it had never occurred 7766 to me that the half of 'md_local' used for chaining was the 7767 half from which PRNG output bytes were taken -- I had always 7768 assumed that the secret half would be used.) The second 7769 measure makes sure that additional data from 'state' is never 7770 mixed into 'md_local' in small portions; this heuristically 7771 further strengthens the PRNG. 7772 [Bodo Moeller] 7773 7774 *) Fix crypto/bn/asm/mips3.s. 7775 [Andy Polyakov] 7776 7777 *) When only the key is given to "enc", the IV is undefined. Print out 7778 an error message in this case. 7779 [Lutz Jaenicke] 7780 7781 *) Handle special case when X509_NAME is empty in X509 printing routines. 7782 [Steve Henson] 7783 7784 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are 7785 positive and less than q. 7786 [Bodo Moeller] 7787 7788 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is 7789 used: it isn't thread safe and the add_lock_callback should handle 7790 that itself. 7791 [Paul Rose <Paul.Rose@bridge.com>] 7792 7793 *) Verify that incoming data obeys the block size in 7794 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c). 7795 [Bodo Moeller] 7796 7797 *) Fix OAEP check. 7798 [Ulf M��ller, Bodo M��ller] 7799 7800 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5 7801 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5 7802 when fixing the server behaviour for backwards-compatible 'client 7803 hello' messages. (Note that the attack is impractical against 7804 SSL 3.0 and TLS 1.0 anyway because length and version checking 7805 means that the probability of guessing a valid ciphertext is 7806 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98 7807 paper.) 7808 7809 Before 0.9.5, the countermeasure (hide the error by generating a 7810 random 'decryption result') did not work properly because 7811 ERR_clear_error() was missing, meaning that SSL_get_error() would 7812 detect the supposedly ignored error. 7813 7814 Both problems are now fixed. 7815 [Bodo Moeller] 7816 7817 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096 7818 (previously it was 1024). 7819 [Bodo Moeller] 7820 7821 *) Fix for compatibility mode trust settings: ignore trust settings 7822 unless some valid trust or reject settings are present. 7823 [Steve Henson] 7824 7825 *) Fix for blowfish EVP: its a variable length cipher. 7826 [Steve Henson] 7827 7828 *) Fix various bugs related to DSA S/MIME verification. Handle missing 7829 parameters in DSA public key structures and return an error in the 7830 DSA routines if parameters are absent. 7831 [Steve Henson] 7832 7833 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd" 7834 in the current directory if neither $RANDFILE nor $HOME was set. 7835 RAND_file_name() in 0.9.6a returned NULL in this case. This has 7836 caused some confusion to Windows users who haven't defined $HOME. 7837 Thus RAND_file_name() is changed again: e_os.h can define a 7838 DEFAULT_HOME, which will be used if $HOME is not set. 7839 For Windows, we use "C:"; on other platforms, we still require 7840 environment variables. 7841 7842 *) Move 'if (!initialized) RAND_poll()' into regions protected by 7843 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids 7844 having multiple threads call RAND_poll() concurrently. 7845 [Bodo Moeller] 7846 7847 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a 7848 combination of a flag and a thread ID variable. 7849 Otherwise while one thread is in ssleay_rand_bytes (which sets the 7850 flag), *other* threads can enter ssleay_add_bytes without obeying 7851 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock 7852 that they do not hold after the first thread unsets add_do_not_lock). 7853 [Bodo Moeller] 7854 7855 *) Change bctest again: '-x' expressions are not available in all 7856 versions of 'test'. 7857 [Bodo Moeller] 7858 7859 Changes between 0.9.6 and 0.9.6a [5 Apr 2001] 7860 7861 *) Fix a couple of memory leaks in PKCS7_dataDecode() 7862 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>] 7863 7864 *) Change Configure and Makefiles to provide EXE_EXT, which will contain 7865 the default extension for executables, if any. Also, make the perl 7866 scripts that use symlink() to test if it really exists and use "cp" 7867 if it doesn't. All this made OpenSSL compilable and installable in 7868 CygWin. 7869 [Richard Levitte] 7870 7871 *) Fix for asn1_GetSequence() for indefinite length constructed data. 7872 If SEQUENCE is length is indefinite just set c->slen to the total 7873 amount of data available. 7874 [Steve Henson, reported by shige@FreeBSD.org] 7875 [This change does not apply to 0.9.7.] 7876 7877 *) Change bctest to avoid here-documents inside command substitution 7878 (workaround for FreeBSD /bin/sh bug). 7879 For compatibility with Ultrix, avoid shell functions (introduced 7880 in the bctest version that searches along $PATH). 7881 [Bodo Moeller] 7882 7883 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes 7884 with des_encrypt() defined on some operating systems, like Solaris 7885 and UnixWare. 7886 [Richard Levitte] 7887 7888 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton: 7889 On the Importance of Eliminating Errors in Cryptographic 7890 Computations, J. Cryptology 14 (2001) 2, 101-119, 7891 http://theory.stanford.edu/~dabo/papers/faults.ps.gz). 7892 [Ulf Moeller] 7893 7894 *) MIPS assembler BIGNUM division bug fix. 7895 [Andy Polyakov] 7896 7897 *) Disabled incorrect Alpha assembler code. 7898 [Richard Levitte] 7899 7900 *) Fix PKCS#7 decode routines so they correctly update the length 7901 after reading an EOC for the EXPLICIT tag. 7902 [Steve Henson] 7903 [This change does not apply to 0.9.7.] 7904 7905 *) Fix bug in PKCS#12 key generation routines. This was triggered 7906 if a 3DES key was generated with a 0 initial byte. Include 7907 PKCS12_BROKEN_KEYGEN compilation option to retain the old 7908 (but broken) behaviour. 7909 [Steve Henson] 7910 7911 *) Enhance bctest to search for a working bc along $PATH and print 7912 it when found. 7913 [Tim Rice <tim@multitalents.net> via Richard Levitte] 7914 7915 *) Fix memory leaks in err.c: free err_data string if necessary; 7916 don't write to the wrong index in ERR_set_error_data. 7917 [Bodo Moeller] 7918 7919 *) Implement ssl23_peek (analogous to ssl23_read), which previously 7920 did not exist. 7921 [Bodo Moeller] 7922 7923 *) Replace rdtsc with _emit statements for VC++ version 5. 7924 [Jeremy Cooper <jeremy@baymoo.org>] 7925 7926 *) Make it possible to reuse SSLv2 sessions. 7927 [Richard Levitte] 7928 7929 *) In copy_email() check for >= 0 as a return value for 7930 X509_NAME_get_index_by_NID() since 0 is a valid index. 7931 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>] 7932 7933 *) Avoid coredump with unsupported or invalid public keys by checking if 7934 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when 7935 PKCS7_verify() fails with non detached data. 7936 [Steve Henson] 7937 7938 *) Don't use getenv in library functions when run as setuid/setgid. 7939 New function OPENSSL_issetugid(). 7940 [Ulf Moeller] 7941 7942 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c) 7943 due to incorrect handling of multi-threading: 7944 7945 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl(). 7946 7947 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on(). 7948 7949 3. Count how many times MemCheck_off() has been called so that 7950 nested use can be treated correctly. This also avoids 7951 inband-signalling in the previous code (which relied on the 7952 assumption that thread ID 0 is impossible). 7953 [Bodo Moeller] 7954 7955 *) Add "-rand" option also to s_client and s_server. 7956 [Lutz Jaenicke] 7957 7958 *) Fix CPU detection on Irix 6.x. 7959 [Kurt Hockenbury <khockenb@stevens-tech.edu> and 7960 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>] 7961 7962 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME 7963 was empty. 7964 [Steve Henson] 7965 [This change does not apply to 0.9.7.] 7966 7967 *) Use the cached encoding of an X509_NAME structure rather than 7968 copying it. This is apparently the reason for the libsafe "errors" 7969 but the code is actually correct. 7970 [Steve Henson] 7971 7972 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent 7973 Bleichenbacher's DSA attack. 7974 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits 7975 to be set and top=0 forces the highest bit to be set; top=-1 is new 7976 and leaves the highest bit random. 7977 [Ulf Moeller, Bodo Moeller] 7978 7979 *) In the NCONF_...-based implementations for CONF_... queries 7980 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using 7981 a temporary CONF structure with the data component set to NULL 7982 (which gives segmentation faults in lh_retrieve). 7983 Instead, use NULL for the CONF pointer in CONF_get_string and 7984 CONF_get_number (which may use environment variables) and directly 7985 return NULL from CONF_get_section. 7986 [Bodo Moeller] 7987 7988 *) Fix potential buffer overrun for EBCDIC. 7989 [Ulf Moeller] 7990 7991 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign 7992 keyUsage if basicConstraints absent for a CA. 7993 [Steve Henson] 7994 7995 *) Make SMIME_write_PKCS7() write mail header values with a format that 7996 is more generally accepted (no spaces before the semicolon), since 7997 some programs can't parse those values properly otherwise. Also make 7998 sure BIO's that break lines after each write do not create invalid 7999 headers. 8000 [Richard Levitte] 8001 8002 *) Make the CRL encoding routines work with empty SEQUENCE OF. The 8003 macros previously used would not encode an empty SEQUENCE OF 8004 and break the signature. 8005 [Steve Henson] 8006 [This change does not apply to 0.9.7.] 8007 8008 *) Zero the premaster secret after deriving the master secret in 8009 DH ciphersuites. 8010 [Steve Henson] 8011 8012 *) Add some EVP_add_digest_alias registrations (as found in 8013 OpenSSL_add_all_digests()) to SSL_library_init() 8014 aka OpenSSL_add_ssl_algorithms(). This provides improved 8015 compatibility with peers using X.509 certificates 8016 with unconventional AlgorithmIdentifier OIDs. 8017 [Bodo Moeller] 8018 8019 *) Fix for Irix with NO_ASM. 8020 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>] 8021 8022 *) ./config script fixes. 8023 [Ulf Moeller, Richard Levitte] 8024 8025 *) Fix 'openssl passwd -1'. 8026 [Bodo Moeller] 8027 8028 *) Change PKCS12_key_gen_asc() so it can cope with non null 8029 terminated strings whose length is passed in the passlen 8030 parameter, for example from PEM callbacks. This was done 8031 by adding an extra length parameter to asc2uni(). 8032 [Steve Henson, reported by <oddissey@samsung.co.kr>] 8033 8034 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn 8035 call failed, free the DSA structure. 8036 [Bodo Moeller] 8037 8038 *) Fix to uni2asc() to cope with zero length Unicode strings. 8039 These are present in some PKCS#12 files. 8040 [Steve Henson] 8041 8042 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c). 8043 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits 8044 when writing a 32767 byte record. 8045 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>] 8046 8047 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c), 8048 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}. 8049 8050 (RSA objects have a reference count access to which is protected 8051 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c], 8052 so they are meant to be shared between threads.) 8053 [Bodo Moeller, Geoff Thorpe; original patch submitted by 8054 "Reddie, Steven" <Steven.Reddie@ca.com>] 8055 8056 *) Fix a deadlock in CRYPTO_mem_leaks(). 8057 [Bodo Moeller] 8058 8059 *) Use better test patterns in bntest. 8060 [Ulf M��ller] 8061 8062 *) rand_win.c fix for Borland C. 8063 [Ulf M��ller] 8064 8065 *) BN_rshift bugfix for n == 0. 8066 [Bodo Moeller] 8067 8068 *) Add a 'bctest' script that checks for some known 'bc' bugs 8069 so that 'make test' does not abort just because 'bc' is broken. 8070 [Bodo Moeller] 8071 8072 *) Store verify_result within SSL_SESSION also for client side to 8073 avoid potential security hole. (Re-used sessions on the client side 8074 always resulted in verify_result==X509_V_OK, not using the original 8075 result of the server certificate verification.) 8076 [Lutz Jaenicke] 8077 8078 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type 8079 SSL3_RT_APPLICATION_DATA, return 0. 8080 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true. 8081 [Bodo Moeller] 8082 8083 *) Fix SSL_peek: 8084 Both ssl2_peek and ssl3_peek, which were totally broken in earlier 8085 releases, have been re-implemented by renaming the previous 8086 implementations of ssl2_read and ssl3_read to ssl2_read_internal 8087 and ssl3_read_internal, respectively, and adding 'peek' parameters 8088 to them. The new ssl[23]_{read,peek} functions are calls to 8089 ssl[23]_read_internal with the 'peek' flag set appropriately. 8090 A 'peek' parameter has also been added to ssl3_read_bytes, which 8091 does the actual work for ssl3_read_internal. 8092 [Bodo Moeller] 8093 8094 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling 8095 the method-specific "init()" handler. Also clean up ex_data after 8096 calling the method-specific "finish()" handler. Previously, this was 8097 happening the other way round. 8098 [Geoff Thorpe] 8099 8100 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16. 8101 The previous value, 12, was not always sufficient for BN_mod_exp(). 8102 [Bodo Moeller] 8103 8104 *) Make sure that shared libraries get the internal name engine with 8105 the full version number and not just 0. This should mark the 8106 shared libraries as not backward compatible. Of course, this should 8107 be changed again when we can guarantee backward binary compatibility. 8108 [Richard Levitte] 8109 8110 *) Fix typo in get_cert_by_subject() in by_dir.c 8111 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>] 8112 8113 *) Rework the system to generate shared libraries: 8114 8115 - Make note of the expected extension for the shared libraries and 8116 if there is a need for symbolic links from for example libcrypto.so.0 8117 to libcrypto.so.0.9.7. There is extended info in Configure for 8118 that. 8119 8120 - Make as few rebuilds of the shared libraries as possible. 8121 8122 - Still avoid linking the OpenSSL programs with the shared libraries. 8123 8124 - When installing, install the shared libraries separately from the 8125 static ones. 8126 [Richard Levitte] 8127 8128 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument. 8129 8130 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new 8131 and not in SSL_clear because the latter is also used by the 8132 accept/connect functions; previously, the settings made by 8133 SSL_set_read_ahead would be lost during the handshake. 8134 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>] 8135 8136 *) Correct util/mkdef.pl to be selective about disabled algorithms. 8137 Previously, it would create entries for disableed algorithms no 8138 matter what. 8139 [Richard Levitte] 8140 8141 *) Added several new manual pages for SSL_* function. 8142 [Lutz Jaenicke] 8143 8144 Changes between 0.9.5a and 0.9.6 [24 Sep 2000] 8145 8146 *) In ssl23_get_client_hello, generate an error message when faced 8147 with an initial SSL 3.0/TLS record that is too small to contain the 8148 first two bytes of the ClientHello message, i.e. client_version. 8149 (Note that this is a pathologic case that probably has never happened 8150 in real life.) The previous approach was to use the version number 8151 from the record header as a substitute; but our protocol choice 8152 should not depend on that one because it is not authenticated 8153 by the Finished messages. 8154 [Bodo Moeller] 8155 8156 *) More robust randomness gathering functions for Windows. 8157 [Jeffrey Altman <jaltman@columbia.edu>] 8158 8159 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is 8160 not set then we don't setup the error code for issuer check errors 8161 to avoid possibly overwriting other errors which the callback does 8162 handle. If an application does set the flag then we assume it knows 8163 what it is doing and can handle the new informational codes 8164 appropriately. 8165 [Steve Henson] 8166 8167 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for 8168 a general "ANY" type, as such it should be able to decode anything 8169 including tagged types. However it didn't check the class so it would 8170 wrongly interpret tagged types in the same way as their universal 8171 counterpart and unknown types were just rejected. Changed so that the 8172 tagged and unknown types are handled in the same way as a SEQUENCE: 8173 that is the encoding is stored intact. There is also a new type 8174 "V_ASN1_OTHER" which is used when the class is not universal, in this 8175 case we have no idea what the actual type is so we just lump them all 8176 together. 8177 [Steve Henson] 8178 8179 *) On VMS, stdout may very well lead to a file that is written to 8180 in a record-oriented fashion. That means that every write() will 8181 write a separate record, which will be read separately by the 8182 programs trying to read from it. This can be very confusing. 8183 8184 The solution is to put a BIO filter in the way that will buffer 8185 text until a linefeed is reached, and then write everything a 8186 line at a time, so every record written will be an actual line, 8187 not chunks of lines and not (usually doesn't happen, but I've 8188 seen it once) several lines in one record. BIO_f_linebuffer() is 8189 the answer. 8190 8191 Currently, it's a VMS-only method, because that's where it has 8192 been tested well enough. 8193 [Richard Levitte] 8194 8195 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery, 8196 it can return incorrect results. 8197 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a, 8198 but it was in 0.9.6-beta[12].) 8199 [Bodo Moeller] 8200 8201 *) Disable the check for content being present when verifying detached 8202 signatures in pk7_smime.c. Some versions of Netscape (wrongly) 8203 include zero length content when signing messages. 8204 [Steve Henson] 8205 8206 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR 8207 BIO_ctrl (for BIO pairs). 8208 [Bodo M��ller] 8209 8210 *) Add DSO method for VMS. 8211 [Richard Levitte] 8212 8213 *) Bug fix: Montgomery multiplication could produce results with the 8214 wrong sign. 8215 [Ulf M��ller] 8216 8217 *) Add RPM specification openssl.spec and modify it to build three 8218 packages. The default package contains applications, application 8219 documentation and run-time libraries. The devel package contains 8220 include files, static libraries and function documentation. The 8221 doc package contains the contents of the doc directory. The original 8222 openssl.spec was provided by Damien Miller <djm@mindrot.org>. 8223 [Richard Levitte] 8224 8225 *) Add a large number of documentation files for many SSL routines. 8226 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>] 8227 8228 *) Add a configuration entry for Sony News 4. 8229 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>] 8230 8231 *) Don't set the two most significant bits to one when generating a 8232 random number < q in the DSA library. 8233 [Ulf M��ller] 8234 8235 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default 8236 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if 8237 the underlying transport is blocking) if a handshake took place. 8238 (The default behaviour is needed by applications such as s_client 8239 and s_server that use select() to determine when to use SSL_read; 8240 but for applications that know in advance when to expect data, it 8241 just makes things more complicated.) 8242 [Bodo Moeller] 8243 8244 *) Add RAND_egd_bytes(), which gives control over the number of bytes read 8245 from EGD. 8246 [Ben Laurie] 8247 8248 *) Add a few more EBCDIC conditionals that make `req' and `x509' 8249 work better on such systems. 8250 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 8251 8252 *) Add two demo programs for PKCS12_parse() and PKCS12_create(). 8253 Update PKCS12_parse() so it copies the friendlyName and the 8254 keyid to the certificates aux info. 8255 [Steve Henson] 8256 8257 *) Fix bug in PKCS7_verify() which caused an infinite loop 8258 if there was more than one signature. 8259 [Sven Uszpelkat <su@celocom.de>] 8260 8261 *) Major change in util/mkdef.pl to include extra information 8262 about each symbol, as well as presentig variables as well 8263 as functions. This change means that there's n more need 8264 to rebuild the .num files when some algorithms are excluded. 8265 [Richard Levitte] 8266 8267 *) Allow the verify time to be set by an application, 8268 rather than always using the current time. 8269 [Steve Henson] 8270 8271 *) Phase 2 verify code reorganisation. The certificate 8272 verify code now looks up an issuer certificate by a 8273 number of criteria: subject name, authority key id 8274 and key usage. It also verifies self signed certificates 8275 by the same criteria. The main comparison function is 8276 X509_check_issued() which performs these checks. 8277 8278 Lot of changes were necessary in order to support this 8279 without completely rewriting the lookup code. 8280 8281 Authority and subject key identifier are now cached. 8282 8283 The LHASH 'certs' is X509_STORE has now been replaced 8284 by a STACK_OF(X509_OBJECT). This is mainly because an 8285 LHASH can't store or retrieve multiple objects with 8286 the same hash value. 8287 8288 As a result various functions (which were all internal 8289 use only) have changed to handle the new X509_STORE 8290 structure. This will break anything that messed round 8291 with X509_STORE internally. 8292 8293 The functions X509_STORE_add_cert() now checks for an 8294 exact match, rather than just subject name. 8295 8296 The X509_STORE API doesn't directly support the retrieval 8297 of multiple certificates matching a given criteria, however 8298 this can be worked round by performing a lookup first 8299 (which will fill the cache with candidate certificates) 8300 and then examining the cache for matches. This is probably 8301 the best we can do without throwing out X509_LOOKUP 8302 entirely (maybe later...). 8303 8304 The X509_VERIFY_CTX structure has been enhanced considerably. 8305 8306 All certificate lookup operations now go via a get_issuer() 8307 callback. Although this currently uses an X509_STORE it 8308 can be replaced by custom lookups. This is a simple way 8309 to bypass the X509_STORE hackery necessary to make this 8310 work and makes it possible to use more efficient techniques 8311 in future. A very simple version which uses a simple 8312 STACK for its trusted certificate store is also provided 8313 using X509_STORE_CTX_trusted_stack(). 8314 8315 The verify_cb() and verify() callbacks now have equivalents 8316 in the X509_STORE_CTX structure. 8317 8318 X509_STORE_CTX also has a 'flags' field which can be used 8319 to customise the verify behaviour. 8320 [Steve Henson] 8321 8322 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which 8323 excludes S/MIME capabilities. 8324 [Steve Henson] 8325 8326 *) When a certificate request is read in keep a copy of the 8327 original encoding of the signed data and use it when outputing 8328 again. Signatures then use the original encoding rather than 8329 a decoded, encoded version which may cause problems if the 8330 request is improperly encoded. 8331 [Steve Henson] 8332 8333 *) For consistency with other BIO_puts implementations, call 8334 buffer_write(b, ...) directly in buffer_puts instead of calling 8335 BIO_write(b, ...). 8336 8337 In BIO_puts, increment b->num_write as in BIO_write. 8338 [Peter.Sylvester@EdelWeb.fr] 8339 8340 *) Fix BN_mul_word for the case where the word is 0. (We have to use 8341 BN_zero, we may not return a BIGNUM with an array consisting of 8342 words set to zero.) 8343 [Bodo Moeller] 8344 8345 *) Avoid calling abort() from within the library when problems are 8346 detected, except if preprocessor symbols have been defined 8347 (such as REF_CHECK, BN_DEBUG etc.). 8348 [Bodo Moeller] 8349 8350 *) New openssl application 'rsautl'. This utility can be 8351 used for low level RSA operations. DER public key 8352 BIO/fp routines also added. 8353 [Steve Henson] 8354 8355 *) New Configure entry and patches for compiling on QNX 4. 8356 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>] 8357 8358 *) A demo state-machine implementation was sponsored by 8359 Nuron (http://www.nuron.com/) and is now available in 8360 demos/state_machine. 8361 [Ben Laurie] 8362 8363 *) New options added to the 'dgst' utility for signature 8364 generation and verification. 8365 [Steve Henson] 8366 8367 *) Unrecognized PKCS#7 content types are now handled via a 8368 catch all ASN1_TYPE structure. This allows unsupported 8369 types to be stored as a "blob" and an application can 8370 encode and decode it manually. 8371 [Steve Henson] 8372 8373 *) Fix various signed/unsigned issues to make a_strex.c 8374 compile under VC++. 8375 [Oscar Jacobsson <oscar.jacobsson@celocom.com>] 8376 8377 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct 8378 length if passed a buffer. ASN1_INTEGER_to_BN failed 8379 if passed a NULL BN and its argument was negative. 8380 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>] 8381 8382 *) Modification to PKCS#7 encoding routines to output definite 8383 length encoding. Since currently the whole structures are in 8384 memory there's not real point in using indefinite length 8385 constructed encoding. However if OpenSSL is compiled with 8386 the flag PKCS7_INDEFINITE_ENCODING the old form is used. 8387 [Steve Henson] 8388 8389 *) Added BIO_vprintf() and BIO_vsnprintf(). 8390 [Richard Levitte] 8391 8392 *) Added more prefixes to parse for in the the strings written 8393 through a logging bio, to cover all the levels that are available 8394 through syslog. The prefixes are now: 8395 8396 PANIC, EMERG, EMR => LOG_EMERG 8397 ALERT, ALR => LOG_ALERT 8398 CRIT, CRI => LOG_CRIT 8399 ERROR, ERR => LOG_ERR 8400 WARNING, WARN, WAR => LOG_WARNING 8401 NOTICE, NOTE, NOT => LOG_NOTICE 8402 INFO, INF => LOG_INFO 8403 DEBUG, DBG => LOG_DEBUG 8404 8405 and as before, if none of those prefixes are present at the 8406 beginning of the string, LOG_ERR is chosen. 8407 8408 On Win32, the LOG_* levels are mapped according to this: 8409 8410 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE 8411 LOG_WARNING => EVENTLOG_WARNING_TYPE 8412 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE 8413 8414 [Richard Levitte] 8415 8416 *) Made it possible to reconfigure with just the configuration 8417 argument "reconf" or "reconfigure". The command line arguments 8418 are stored in Makefile.ssl in the variable CONFIGURE_ARGS, 8419 and are retrieved from there when reconfiguring. 8420 [Richard Levitte] 8421 8422 *) MD4 implemented. 8423 [Assar Westerlund <assar@sics.se>, Richard Levitte] 8424 8425 *) Add the arguments -CAfile and -CApath to the pkcs12 utility. 8426 [Richard Levitte] 8427 8428 *) The obj_dat.pl script was messing up the sorting of object 8429 names. The reason was that it compared the quoted version 8430 of strings as a result "OCSP" > "OCSP Signing" because 8431 " > SPACE. Changed script to store unquoted versions of 8432 names and add quotes on output. It was also omitting some 8433 names from the lookup table if they were given a default 8434 value (that is if SN is missing it is given the same 8435 value as LN and vice versa), these are now added on the 8436 grounds that if an object has a name we should be able to 8437 look it up. Finally added warning output when duplicate 8438 short or long names are found. 8439 [Steve Henson] 8440 8441 *) Changes needed for Tandem NSK. 8442 [Scott Uroff <scott@xypro.com>] 8443 8444 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in 8445 RSA_padding_check_SSLv23(), special padding was never detected 8446 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol 8447 version rollback attacks was not effective. 8448 8449 In s23_clnt.c, don't use special rollback-attack detection padding 8450 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the 8451 client; similarly, in s23_srvr.c, don't do the rollback check if 8452 SSL 2.0 is the only protocol enabled in the server. 8453 [Bodo Moeller] 8454 8455 *) Make it possible to get hexdumps of unprintable data with 'openssl 8456 asn1parse'. By implication, the functions ASN1_parse_dump() and 8457 BIO_dump_indent() are added. 8458 [Richard Levitte] 8459 8460 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex() 8461 these print out strings and name structures based on various 8462 flags including RFC2253 support and proper handling of 8463 multibyte characters. Added options to the 'x509' utility 8464 to allow the various flags to be set. 8465 [Steve Henson] 8466 8467 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME. 8468 Also change the functions X509_cmp_current_time() and 8469 X509_gmtime_adj() work with an ASN1_TIME structure, 8470 this will enable certificates using GeneralizedTime in validity 8471 dates to be checked. 8472 [Steve Henson] 8473 8474 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid 8475 negative public key encodings) on by default, 8476 NO_NEG_PUBKEY_BUG can be set to disable it. 8477 [Steve Henson] 8478 8479 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT 8480 content octets. An i2c_ASN1_OBJECT is unnecessary because 8481 the encoding can be trivially obtained from the structure. 8482 [Steve Henson] 8483 8484 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock), 8485 not read locks (CRYPTO_r_[un]lock). 8486 [Bodo Moeller] 8487 8488 *) A first attempt at creating official support for shared 8489 libraries through configuration. I've kept it so the 8490 default is static libraries only, and the OpenSSL programs 8491 are always statically linked for now, but there are 8492 preparations for dynamic linking in place. 8493 This has been tested on Linux and Tru64. 8494 [Richard Levitte] 8495 8496 *) Randomness polling function for Win9x, as described in: 8497 Peter Gutmann, Software Generation of Practically Strong 8498 Random Numbers. 8499 [Ulf M��ller] 8500 8501 *) Fix so PRNG is seeded in req if using an already existing 8502 DSA key. 8503 [Steve Henson] 8504 8505 *) New options to smime application. -inform and -outform 8506 allow alternative formats for the S/MIME message including 8507 PEM and DER. The -content option allows the content to be 8508 specified separately. This should allow things like Netscape 8509 form signing output easier to verify. 8510 [Steve Henson] 8511 8512 *) Fix the ASN1 encoding of tags using the 'long form'. 8513 [Steve Henson] 8514 8515 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT 8516 STRING types. These convert content octets to and from the 8517 underlying type. The actual tag and length octets are 8518 already assumed to have been read in and checked. These 8519 are needed because all other string types have virtually 8520 identical handling apart from the tag. By having versions 8521 of the ASN1 functions that just operate on content octets 8522 IMPLICIT tagging can be handled properly. It also allows 8523 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED 8524 and ASN1_INTEGER are identical apart from the tag. 8525 [Steve Henson] 8526 8527 *) Change the handling of OID objects as follows: 8528 8529 - New object identifiers are inserted in objects.txt, following 8530 the syntax given in objects.README. 8531 - objects.pl is used to process obj_mac.num and create a new 8532 obj_mac.h. 8533 - obj_dat.pl is used to create a new obj_dat.h, using the data in 8534 obj_mac.h. 8535 8536 This is currently kind of a hack, and the perl code in objects.pl 8537 isn't very elegant, but it works as I intended. The simplest way 8538 to check that it worked correctly is to look in obj_dat.h and 8539 check the array nid_objs and make sure the objects haven't moved 8540 around (this is important!). Additions are OK, as well as 8541 consistent name changes. 8542 [Richard Levitte] 8543 8544 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1'). 8545 [Bodo Moeller] 8546 8547 *) Addition of the command line parameter '-rand file' to 'openssl req'. 8548 The given file adds to whatever has already been seeded into the 8549 random pool through the RANDFILE configuration file option or 8550 environment variable, or the default random state file. 8551 [Richard Levitte] 8552 8553 *) mkstack.pl now sorts each macro group into lexical order. 8554 Previously the output order depended on the order the files 8555 appeared in the directory, resulting in needless rewriting 8556 of safestack.h . 8557 [Steve Henson] 8558 8559 *) Patches to make OpenSSL compile under Win32 again. Mostly 8560 work arounds for the VC++ problem that it treats func() as 8561 func(void). Also stripped out the parts of mkdef.pl that 8562 added extra typesafe functions: these no longer exist. 8563 [Steve Henson] 8564 8565 *) Reorganisation of the stack code. The macros are now all 8566 collected in safestack.h . Each macro is defined in terms of 8567 a "stack macro" of the form SKM_<name>(type, a, b). The 8568 DEBUG_SAFESTACK is now handled in terms of function casts, 8569 this has the advantage of retaining type safety without the 8570 use of additional functions. If DEBUG_SAFESTACK is not defined 8571 then the non typesafe macros are used instead. Also modified the 8572 mkstack.pl script to handle the new form. Needs testing to see 8573 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK 8574 the default if no major problems. Similar behaviour for ASN1_SET_OF 8575 and PKCS12_STACK_OF. 8576 [Steve Henson] 8577 8578 *) When some versions of IIS use the 'NET' form of private key the 8579 key derivation algorithm is different. Normally MD5(password) is 8580 used as a 128 bit RC4 key. In the modified case 8581 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some 8582 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same 8583 as the old Netscape_RSA functions except they have an additional 8584 'sgckey' parameter which uses the modified algorithm. Also added 8585 an -sgckey command line option to the rsa utility. Thanks to 8586 Adrian Peck <bertie@ncipher.com> for posting details of the modified 8587 algorithm to openssl-dev. 8588 [Steve Henson] 8589 8590 *) The evp_local.h macros were using 'c.##kname' which resulted in 8591 invalid expansion on some systems (SCO 5.0.5 for example). 8592 Corrected to 'c.kname'. 8593 [Phillip Porch <root@theporch.com>] 8594 8595 *) New X509_get1_email() and X509_REQ_get1_email() functions that return 8596 a STACK of email addresses from a certificate or request, these look 8597 in the subject name and the subject alternative name extensions and 8598 omit any duplicate addresses. 8599 [Steve Henson] 8600 8601 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows. 8602 This makes DSA verification about 2 % faster. 8603 [Bodo Moeller] 8604 8605 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5 8606 (meaning that now 2^5 values will be precomputed, which is only 4 KB 8607 plus overhead for 1024 bit moduli). 8608 This makes exponentiations about 0.5 % faster for 1024 bit 8609 exponents (as measured by "openssl speed rsa2048"). 8610 [Bodo Moeller] 8611 8612 *) Rename memory handling macros to avoid conflicts with other 8613 software: 8614 Malloc => OPENSSL_malloc 8615 Malloc_locked => OPENSSL_malloc_locked 8616 Realloc => OPENSSL_realloc 8617 Free => OPENSSL_free 8618 [Richard Levitte] 8619 8620 *) New function BN_mod_exp_mont_word for small bases (roughly 15% 8621 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange). 8622 [Bodo Moeller] 8623 8624 *) CygWin32 support. 8625 [John Jarvie <jjarvie@newsguy.com>] 8626 8627 *) The type-safe stack code has been rejigged. It is now only compiled 8628 in when OpenSSL is configured with the DEBUG_SAFESTACK option and 8629 by default all type-specific stack functions are "#define"d back to 8630 standard stack functions. This results in more streamlined output 8631 but retains the type-safety checking possibilities of the original 8632 approach. 8633 [Geoff Thorpe] 8634 8635 *) The STACK code has been cleaned up, and certain type declarations 8636 that didn't make a lot of sense have been brought in line. This has 8637 also involved a cleanup of sorts in safestack.h to more correctly 8638 map type-safe stack functions onto their plain stack counterparts. 8639 This work has also resulted in a variety of "const"ifications of 8640 lots of the code, especially "_cmp" operations which should normally 8641 be prototyped with "const" parameters anyway. 8642 [Geoff Thorpe] 8643 8644 *) When generating bytes for the first time in md_rand.c, 'stir the pool' 8645 by seeding with STATE_SIZE dummy bytes (with zero entropy count). 8646 (The PRNG state consists of two parts, the large pool 'state' and 'md', 8647 where all of 'md' is used each time the PRNG is used, but 'state' 8648 is used only indexed by a cyclic counter. As entropy may not be 8649 well distributed from the beginning, 'md' is important as a 8650 chaining variable. However, the output function chains only half 8651 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains 8652 all of 'md', and seeding with STATE_SIZE dummy bytes will result 8653 in all of 'state' being rewritten, with the new values depending 8654 on virtually all of 'md'. This overcomes the 80 bit limitation.) 8655 [Bodo Moeller] 8656 8657 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when 8658 the handshake is continued after ssl_verify_cert_chain(); 8659 otherwise, if SSL_VERIFY_NONE is set, remaining error codes 8660 can lead to 'unexplainable' connection aborts later. 8661 [Bodo Moeller; problem tracked down by Lutz Jaenicke] 8662 8663 *) Major EVP API cipher revision. 8664 Add hooks for extra EVP features. This allows various cipher 8665 parameters to be set in the EVP interface. Support added for variable 8666 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and 8667 setting of RC2 and RC5 parameters. 8668 8669 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length 8670 ciphers. 8671 8672 Remove lots of duplicated code from the EVP library. For example *every* 8673 cipher init() function handles the 'iv' in the same way according to the 8674 cipher mode. They also all do nothing if the 'key' parameter is NULL and 8675 for CFB and OFB modes they zero ctx->num. 8676 8677 New functionality allows removal of S/MIME code RC2 hack. 8678 8679 Most of the routines have the same form and so can be declared in terms 8680 of macros. 8681 8682 By shifting this to the top level EVP_CipherInit() it can be removed from 8683 all individual ciphers. If the cipher wants to handle IVs or keys 8684 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT 8685 flags. 8686 8687 Change lots of functions like EVP_EncryptUpdate() to now return a 8688 value: although software versions of the algorithms cannot fail 8689 any installed hardware versions can. 8690 [Steve Henson] 8691 8692 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if 8693 this option is set, tolerate broken clients that send the negotiated 8694 protocol version number instead of the requested protocol version 8695 number. 8696 [Bodo Moeller] 8697 8698 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag; 8699 i.e. non-zero for export ciphersuites, zero otherwise. 8700 Previous versions had this flag inverted, inconsistent with 8701 rsa_tmp_cb (..._TMP_RSA_CB). 8702 [Bodo Moeller; problem reported by Amit Chopra] 8703 8704 *) Add missing DSA library text string. Work around for some IIS 8705 key files with invalid SEQUENCE encoding. 8706 [Steve Henson] 8707 8708 *) Add a document (doc/standards.txt) that list all kinds of standards 8709 and so on that are implemented in OpenSSL. 8710 [Richard Levitte] 8711 8712 *) Enhance c_rehash script. Old version would mishandle certificates 8713 with the same subject name hash and wouldn't handle CRLs at all. 8714 Added -fingerprint option to crl utility, to support new c_rehash 8715 features. 8716 [Steve Henson] 8717 8718 *) Eliminate non-ANSI declarations in crypto.h and stack.h. 8719 [Ulf M��ller] 8720 8721 *) Fix for SSL server purpose checking. Server checking was 8722 rejecting certificates which had extended key usage present 8723 but no ssl client purpose. 8724 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>] 8725 8726 *) Make PKCS#12 code work with no password. The PKCS#12 spec 8727 is a little unclear about how a blank password is handled. 8728 Since the password in encoded as a BMPString with terminating 8729 double NULL a zero length password would end up as just the 8730 double NULL. However no password at all is different and is 8731 handled differently in the PKCS#12 key generation code. NS 8732 treats a blank password as zero length. MSIE treats it as no 8733 password on export: but it will try both on import. We now do 8734 the same: PKCS12_parse() tries zero length and no password if 8735 the password is set to "" or NULL (NULL is now a valid password: 8736 it wasn't before) as does the pkcs12 application. 8737 [Steve Henson] 8738 8739 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use 8740 perror when PEM_read_bio_X509_REQ fails, the error message must 8741 be obtained from the error queue. 8742 [Bodo Moeller] 8743 8744 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing 8745 it in ERR_remove_state if appropriate, and change ERR_get_state 8746 accordingly to avoid race conditions (this is necessary because 8747 thread_hash is no longer constant once set). 8748 [Bodo Moeller] 8749 8750 *) Bugfix for linux-elf makefile.one. 8751 [Ulf M��ller] 8752 8753 *) RSA_get_default_method() will now cause a default 8754 RSA_METHOD to be chosen if one doesn't exist already. 8755 Previously this was only set during a call to RSA_new() 8756 or RSA_new_method(NULL) meaning it was possible for 8757 RSA_get_default_method() to return NULL. 8758 [Geoff Thorpe] 8759 8760 *) Added native name translation to the existing DSO code 8761 that will convert (if the flag to do so is set) filenames 8762 that are sufficiently small and have no path information 8763 into a canonical native form. Eg. "blah" converted to 8764 "libblah.so" or "blah.dll" etc. 8765 [Geoff Thorpe] 8766 8767 *) New function ERR_error_string_n(e, buf, len) which is like 8768 ERR_error_string(e, buf), but writes at most 'len' bytes 8769 including the 0 terminator. For ERR_error_string_n, 'buf' 8770 may not be NULL. 8771 [Damien Miller <djm@mindrot.org>, Bodo Moeller] 8772 8773 *) CONF library reworked to become more general. A new CONF 8774 configuration file reader "class" is implemented as well as a 8775 new functions (NCONF_*, for "New CONF") to handle it. The now 8776 old CONF_* functions are still there, but are reimplemented to 8777 work in terms of the new functions. Also, a set of functions 8778 to handle the internal storage of the configuration data is 8779 provided to make it easier to write new configuration file 8780 reader "classes" (I can definitely see something reading a 8781 configuration file in XML format, for example), called _CONF_*, 8782 or "the configuration storage API"... 8783 8784 The new configuration file reading functions are: 8785 8786 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio, 8787 NCONF_get_section, NCONF_get_string, NCONF_get_numbre 8788 8789 NCONF_default, NCONF_WIN32 8790 8791 NCONF_dump_fp, NCONF_dump_bio 8792 8793 NCONF_default and NCONF_WIN32 are method (or "class") choosers, 8794 NCONF_new creates a new CONF object. This works in the same way 8795 as other interfaces in OpenSSL, like the BIO interface. 8796 NCONF_dump_* dump the internal storage of the configuration file, 8797 which is useful for debugging. All other functions take the same 8798 arguments as the old CONF_* functions wth the exception of the 8799 first that must be a `CONF *' instead of a `LHASH *'. 8800 8801 To make it easer to use the new classes with the old CONF_* functions, 8802 the function CONF_set_default_method is provided. 8803 [Richard Levitte] 8804 8805 *) Add '-tls1' option to 'openssl ciphers', which was already 8806 mentioned in the documentation but had not been implemented. 8807 (This option is not yet really useful because even the additional 8808 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.) 8809 [Bodo Moeller] 8810 8811 *) Initial DSO code added into libcrypto for letting OpenSSL (and 8812 OpenSSL-based applications) load shared libraries and bind to 8813 them in a portable way. 8814 [Geoff Thorpe, with contributions from Richard Levitte] 8815 8816 Changes between 0.9.5 and 0.9.5a [1 Apr 2000] 8817 8818 *) Make sure _lrotl and _lrotr are only used with MSVC. 8819 8820 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status 8821 (the default implementation of RAND_status). 8822 8823 *) Rename openssl x509 option '-crlext', which was added in 0.9.5, 8824 to '-clrext' (= clear extensions), as intended and documented. 8825 [Bodo Moeller; inconsistency pointed out by Michael Attili 8826 <attili@amaxo.com>] 8827 8828 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length 8829 was larger than the MD block size. 8830 [Steve Henson, pointed out by Yost William <YostW@tce.com>] 8831 8832 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument 8833 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set() 8834 using the passed key: if the passed key was a private key the result 8835 of X509_print(), for example, would be to print out all the private key 8836 components. 8837 [Steve Henson] 8838 8839 *) des_quad_cksum() byte order bug fix. 8840 [Ulf M��ller, using the problem description in krb4-0.9.7, where 8841 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>] 8842 8843 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly 8844 discouraged. 8845 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>] 8846 8847 *) For easily testing in shell scripts whether some command 8848 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX' 8849 returns with exit code 0 iff no command of the given name is available. 8850 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases, 8851 the output goes to stdout and nothing is printed to stderr. 8852 Additional arguments are always ignored. 8853 8854 Since for each cipher there is a command of the same name, 8855 the 'no-cipher' compilation switches can be tested this way. 8856 8857 ('openssl no-XXX' is not able to detect pseudo-commands such 8858 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.) 8859 [Bodo Moeller] 8860 8861 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration. 8862 [Bodo Moeller] 8863 8864 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE 8865 is set; it will be thrown away anyway because each handshake creates 8866 its own key. 8867 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition 8868 to parameters -- in previous versions (since OpenSSL 0.9.3) the 8869 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining 8870 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro. 8871 [Bodo Moeller] 8872 8873 *) New s_client option -ign_eof: EOF at stdin is ignored, and 8874 'Q' and 'R' lose their special meanings (quit/renegotiate). 8875 This is part of what -quiet does; unlike -quiet, -ign_eof 8876 does not suppress any output. 8877 [Richard Levitte] 8878 8879 *) Add compatibility options to the purpose and trust code. The 8880 purpose X509_PURPOSE_ANY is "any purpose" which automatically 8881 accepts a certificate or CA, this was the previous behaviour, 8882 with all the associated security issues. 8883 8884 X509_TRUST_COMPAT is the old trust behaviour: only and 8885 automatically trust self signed roots in certificate store. A 8886 new trust setting X509_TRUST_DEFAULT is used to specify that 8887 a purpose has no associated trust setting and it should instead 8888 use the value in the default purpose. 8889 [Steve Henson] 8890 8891 *) Fix the PKCS#8 DSA private key code so it decodes keys again 8892 and fix a memory leak. 8893 [Steve Henson] 8894 8895 *) In util/mkerr.pl (which implements 'make errors'), preserve 8896 reason strings from the previous version of the .c file, as 8897 the default to have only downcase letters (and digits) in 8898 automatically generated reasons codes is not always appropriate. 8899 [Bodo Moeller] 8900 8901 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table 8902 using strerror. Previously, ERR_reason_error_string() returned 8903 library names as reason strings for SYSerr; but SYSerr is a special 8904 case where small numbers are errno values, not library numbers. 8905 [Bodo Moeller] 8906 8907 *) Add '-dsaparam' option to 'openssl dhparam' application. This 8908 converts DSA parameters into DH parameters. (When creating parameters, 8909 DSA_generate_parameters is used.) 8910 [Bodo Moeller] 8911 8912 *) Include 'length' (recommended exponent length) in C code generated 8913 by 'openssl dhparam -C'. 8914 [Bodo Moeller] 8915 8916 *) The second argument to set_label in perlasm was already being used 8917 so couldn't be used as a "file scope" flag. Moved to third argument 8918 which was free. 8919 [Steve Henson] 8920 8921 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes 8922 instead of RAND_bytes for encryption IVs and salts. 8923 [Bodo Moeller] 8924 8925 *) Include RAND_status() into RAND_METHOD instead of implementing 8926 it only for md_rand.c Otherwise replacing the PRNG by calling 8927 RAND_set_rand_method would be impossible. 8928 [Bodo Moeller] 8929 8930 *) Don't let DSA_generate_key() enter an infinite loop if the random 8931 number generation fails. 8932 [Bodo Moeller] 8933 8934 *) New 'rand' application for creating pseudo-random output. 8935 [Bodo Moeller] 8936 8937 *) Added configuration support for Linux/IA64 8938 [Rolf Haberrecker <rolf@suse.de>] 8939 8940 *) Assembler module support for Mingw32. 8941 [Ulf M��ller] 8942 8943 *) Shared library support for HPUX (in shlib/). 8944 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous] 8945 8946 *) Shared library support for Solaris gcc. 8947 [Lutz Behnke <behnke@trustcenter.de>] 8948 8949 Changes between 0.9.4 and 0.9.5 [28 Feb 2000] 8950 8951 *) PKCS7_encrypt() was adding text MIME headers twice because they 8952 were added manually and by SMIME_crlf_copy(). 8953 [Steve Henson] 8954 8955 *) In bntest.c don't call BN_rand with zero bits argument. 8956 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>] 8957 8958 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n] 8959 case was implemented. This caused BN_div_recp() to fail occasionally. 8960 [Ulf M��ller] 8961 8962 *) Add an optional second argument to the set_label() in the perl 8963 assembly language builder. If this argument exists and is set 8964 to 1 it signals that the assembler should use a symbol whose 8965 scope is the entire file, not just the current function. This 8966 is needed with MASM which uses the format label:: for this scope. 8967 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>] 8968 8969 *) Change the ASN1 types so they are typedefs by default. Before 8970 almost all types were #define'd to ASN1_STRING which was causing 8971 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING) 8972 for example. 8973 [Steve Henson] 8974 8975 *) Change names of new functions to the new get1/get0 naming 8976 convention: After 'get1', the caller owns a reference count 8977 and has to call ..._free; 'get0' returns a pointer to some 8978 data structure without incrementing reference counters. 8979 (Some of the existing 'get' functions increment a reference 8980 counter, some don't.) 8981 Similarly, 'set1' and 'add1' functions increase reference 8982 counters or duplicate objects. 8983 [Steve Henson] 8984 8985 *) Allow for the possibility of temp RSA key generation failure: 8986 the code used to assume it always worked and crashed on failure. 8987 [Steve Henson] 8988 8989 *) Fix potential buffer overrun problem in BIO_printf(). 8990 [Ulf M��ller, using public domain code by Patrick Powell; problem 8991 pointed out by David Sacerdote <das33@cornell.edu>] 8992 8993 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions 8994 RAND_egd() and RAND_status(). In the command line application, 8995 the EGD socket can be specified like a seed file using RANDFILE 8996 or -rand. 8997 [Ulf M��ller] 8998 8999 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures. 9000 Some CAs (e.g. Verisign) distribute certificates in this form. 9001 [Steve Henson] 9002 9003 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher 9004 list to exclude them. This means that no special compilation option 9005 is needed to use anonymous DH: it just needs to be included in the 9006 cipher list. 9007 [Steve Henson] 9008 9009 *) Change the EVP_MD_CTX_type macro so its meaning consistent with 9010 EVP_MD_type. The old functionality is available in a new macro called 9011 EVP_MD_md(). Change code that uses it and update docs. 9012 [Steve Henson] 9013 9014 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions 9015 where the 'void *' argument is replaced by a function pointer argument. 9016 Previously 'void *' was abused to point to functions, which works on 9017 many platforms, but is not correct. As these functions are usually 9018 called by macros defined in OpenSSL header files, most source code 9019 should work without changes. 9020 [Richard Levitte] 9021 9022 *) <openssl/opensslconf.h> (which is created by Configure) now contains 9023 sections with information on -D... compiler switches used for 9024 compiling the library so that applications can see them. To enable 9025 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES 9026 must be defined. E.g., 9027 #define OPENSSL_ALGORITHM_DEFINES 9028 #include <openssl/opensslconf.h> 9029 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc. 9030 [Richard Levitte, Ulf and Bodo M��ller] 9031 9032 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS 9033 record layer. 9034 [Bodo Moeller] 9035 9036 *) Change the 'other' type in certificate aux info to a STACK_OF 9037 X509_ALGOR. Although not an AlgorithmIdentifier as such it has 9038 the required ASN1 format: arbitrary types determined by an OID. 9039 [Steve Henson] 9040 9041 *) Add some PEM_write_X509_REQ_NEW() functions and a command line 9042 argument to 'req'. This is not because the function is newer or 9043 better than others it just uses the work 'NEW' in the certificate 9044 request header lines. Some software needs this. 9045 [Steve Henson] 9046 9047 *) Reorganise password command line arguments: now passwords can be 9048 obtained from various sources. Delete the PEM_cb function and make 9049 it the default behaviour: i.e. if the callback is NULL and the 9050 usrdata argument is not NULL interpret it as a null terminated pass 9051 phrase. If usrdata and the callback are NULL then the pass phrase 9052 is prompted for as usual. 9053 [Steve Henson] 9054 9055 *) Add support for the Compaq Atalla crypto accelerator. If it is installed, 9056 the support is automatically enabled. The resulting binaries will 9057 autodetect the card and use it if present. 9058 [Ben Laurie and Compaq Inc.] 9059 9060 *) Work around for Netscape hang bug. This sends certificate request 9061 and server done in one record. Since this is perfectly legal in the 9062 SSL/TLS protocol it isn't a "bug" option and is on by default. See 9063 the bugs/SSLv3 entry for more info. 9064 [Steve Henson] 9065 9066 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround. 9067 [Andy Polyakov] 9068 9069 *) Add -rand argument to smime and pkcs12 applications and read/write 9070 of seed file. 9071 [Steve Henson] 9072 9073 *) New 'passwd' tool for crypt(3) and apr1 password hashes. 9074 [Bodo Moeller] 9075 9076 *) Add command line password options to the remaining applications. 9077 [Steve Henson] 9078 9079 *) Bug fix for BN_div_recp() for numerators with an even number of 9080 bits. 9081 [Ulf M��ller] 9082 9083 *) More tests in bntest.c, and changed test_bn output. 9084 [Ulf M��ller] 9085 9086 *) ./config recognizes MacOS X now. 9087 [Andy Polyakov] 9088 9089 *) Bug fix for BN_div() when the first words of num and divsor are 9090 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0). 9091 [Ulf M��ller] 9092 9093 *) Add support for various broken PKCS#8 formats, and command line 9094 options to produce them. 9095 [Steve Henson] 9096 9097 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to 9098 get temporary BIGNUMs from a BN_CTX. 9099 [Ulf M��ller] 9100 9101 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont() 9102 for p == 0. 9103 [Ulf M��ller] 9104 9105 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and 9106 include a #define from the old name to the new. The original intent 9107 was that statically linked binaries could for example just call 9108 SSLeay_add_all_ciphers() to just add ciphers to the table and not 9109 link with digests. This never worked becayse SSLeay_add_all_digests() 9110 and SSLeay_add_all_ciphers() were in the same source file so calling 9111 one would link with the other. They are now in separate source files. 9112 [Steve Henson] 9113 9114 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'. 9115 [Steve Henson] 9116 9117 *) Use a less unusual form of the Miller-Rabin primality test (it used 9118 a binary algorithm for exponentiation integrated into the Miller-Rabin 9119 loop, our standard modexp algorithms are faster). 9120 [Bodo Moeller] 9121 9122 *) Support for the EBCDIC character set completed. 9123 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>] 9124 9125 *) Source code cleanups: use const where appropriate, eliminate casts, 9126 use void * instead of char * in lhash. 9127 [Ulf M��ller] 9128 9129 *) Bugfix: ssl3_send_server_key_exchange was not restartable 9130 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of 9131 this the server could overwrite ephemeral keys that the client 9132 has already seen). 9133 [Bodo Moeller] 9134 9135 *) Turn DSA_is_prime into a macro that calls BN_is_prime, 9136 using 50 iterations of the Rabin-Miller test. 9137 9138 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50 9139 iterations of the Rabin-Miller test as required by the appendix 9140 to FIPS PUB 186[-1]) instead of DSA_is_prime. 9141 As BN_is_prime_fasttest includes trial division, DSA parameter 9142 generation becomes much faster. 9143 9144 This implies a change for the callback functions in DSA_is_prime 9145 and DSA_generate_parameters: The callback function is called once 9146 for each positive witness in the Rabin-Miller test, not just 9147 occasionally in the inner loop; and the parameters to the 9148 callback function now provide an iteration count for the outer 9149 loop rather than for the current invocation of the inner loop. 9150 DSA_generate_parameters additionally can call the callback 9151 function with an 'iteration count' of -1, meaning that a 9152 candidate has passed the trial division test (when q is generated 9153 from an application-provided seed, trial division is skipped). 9154 [Bodo Moeller] 9155 9156 *) New function BN_is_prime_fasttest that optionally does trial 9157 division before starting the Rabin-Miller test and has 9158 an additional BN_CTX * argument (whereas BN_is_prime always 9159 has to allocate at least one BN_CTX). 9160 'callback(1, -1, cb_arg)' is called when a number has passed the 9161 trial division stage. 9162 [Bodo Moeller] 9163 9164 *) Fix for bug in CRL encoding. The validity dates weren't being handled 9165 as ASN1_TIME. 9166 [Steve Henson] 9167 9168 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file. 9169 [Steve Henson] 9170 9171 *) New function BN_pseudo_rand(). 9172 [Ulf M��ller] 9173 9174 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable) 9175 bignum version of BN_from_montgomery() with the working code from 9176 SSLeay 0.9.0 (the word based version is faster anyway), and clean up 9177 the comments. 9178 [Ulf M��ller] 9179 9180 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that 9181 made it impossible to use the same SSL_SESSION data structure in 9182 SSL2 clients in multiple threads. 9183 [Bodo Moeller] 9184 9185 *) The return value of RAND_load_file() no longer counts bytes obtained 9186 by stat(). RAND_load_file(..., -1) is new and uses the complete file 9187 to seed the PRNG (previously an explicit byte count was required). 9188 [Ulf M��ller, Bodo M��ller] 9189 9190 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes 9191 used (char *) instead of (void *) and had casts all over the place. 9192 [Steve Henson] 9193 9194 *) Make BN_generate_prime() return NULL on error if ret!=NULL. 9195 [Ulf M��ller] 9196 9197 *) Retain source code compatibility for BN_prime_checks macro: 9198 BN_is_prime(..., BN_prime_checks, ...) now uses 9199 BN_prime_checks_for_size to determine the appropriate number of 9200 Rabin-Miller iterations. 9201 [Ulf M��ller] 9202 9203 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to 9204 DH_CHECK_P_NOT_SAFE_PRIME. 9205 (Check if this is true? OpenPGP calls them "strong".) 9206 [Ulf M��ller] 9207 9208 *) Merge the functionality of "dh" and "gendh" programs into a new program 9209 "dhparam". The old programs are retained for now but will handle DH keys 9210 (instead of parameters) in future. 9211 [Steve Henson] 9212 9213 *) Make the ciphers, s_server and s_client programs check the return values 9214 when a new cipher list is set. 9215 [Steve Henson] 9216 9217 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit 9218 ciphers. Before when the 56bit ciphers were enabled the sorting was 9219 wrong. 9220 9221 The syntax for the cipher sorting has been extended to support sorting by 9222 cipher-strength (using the strength_bits hard coded in the tables). 9223 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod). 9224 9225 Fix a bug in the cipher-command parser: when supplying a cipher command 9226 string with an "undefined" symbol (neither command nor alphanumeric 9227 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now 9228 an error is flagged. 9229 9230 Due to the strength-sorting extension, the code of the 9231 ssl_create_cipher_list() function was completely rearranged. I hope that 9232 the readability was also increased :-) 9233 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>] 9234 9235 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1 9236 for the first serial number and places 2 in the serial number file. This 9237 avoids problems when the root CA is created with serial number zero and 9238 the first user certificate has the same issuer name and serial number 9239 as the root CA. 9240 [Steve Henson] 9241 9242 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses 9243 the new code. Add documentation for this stuff. 9244 [Steve Henson] 9245 9246 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from 9247 X509_*() to X509at_*() on the grounds that they don't handle X509 9248 structures and behave in an analagous way to the X509v3 functions: 9249 they shouldn't be called directly but wrapper functions should be used 9250 instead. 9251 9252 So we also now have some wrapper functions that call the X509at functions 9253 when passed certificate requests. (TO DO: similar things can be done with 9254 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other 9255 things. Some of these need some d2i or i2d and print functionality 9256 because they handle more complex structures.) 9257 [Steve Henson] 9258 9259 *) Add missing #ifndefs that caused missing symbols when building libssl 9260 as a shared library without RSA. Use #ifndef NO_SSL2 instead of 9261 NO_RSA in ssl/s2*.c. 9262 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf M��ller] 9263 9264 *) Precautions against using the PRNG uninitialized: RAND_bytes() now 9265 has a return value which indicates the quality of the random data 9266 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's 9267 error queue. New function RAND_pseudo_bytes() generates output that is 9268 guaranteed to be unique but not unpredictable. RAND_add is like 9269 RAND_seed, but takes an extra argument for an entropy estimate 9270 (RAND_seed always assumes full entropy). 9271 [Ulf M��ller] 9272 9273 *) Do more iterations of Rabin-Miller probable prime test (specifically, 9274 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes 9275 instead of only 2 for all lengths; see BN_prime_checks_for_size definition 9276 in crypto/bn/bn_prime.c for the complete table). This guarantees a 9277 false-positive rate of at most 2^-80 for random input. 9278 [Bodo Moeller] 9279 9280 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs. 9281 [Bodo Moeller] 9282 9283 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain 9284 in the 0.9.5 release), this returns the chain 9285 from an X509_CTX structure with a dup of the stack and all 9286 the X509 reference counts upped: so the stack will exist 9287 after X509_CTX_cleanup() has been called. Modify pkcs12.c 9288 to use this. 9289 9290 Also make SSL_SESSION_print() print out the verify return 9291 code. 9292 [Steve Henson] 9293 9294 *) Add manpage for the pkcs12 command. Also change the default 9295 behaviour so MAC iteration counts are used unless the new 9296 -nomaciter option is used. This improves file security and 9297 only older versions of MSIE (4.0 for example) need it. 9298 [Steve Henson] 9299 9300 *) Honor the no-xxx Configure options when creating .DEF files. 9301 [Ulf M��ller] 9302 9303 *) Add PKCS#10 attributes to field table: challengePassword, 9304 unstructuredName and unstructuredAddress. These are taken from 9305 draft PKCS#9 v2.0 but are compatible with v1.2 provided no 9306 international characters are used. 9307 9308 More changes to X509_ATTRIBUTE code: allow the setting of types 9309 based on strings. Remove the 'loc' parameter when adding 9310 attributes because these will be a SET OF encoding which is sorted 9311 in ASN1 order. 9312 [Steve Henson] 9313 9314 *) Initial changes to the 'req' utility to allow request generation 9315 automation. This will allow an application to just generate a template 9316 file containing all the field values and have req construct the 9317 request. 9318 9319 Initial support for X509_ATTRIBUTE handling. Stacks of these are 9320 used all over the place including certificate requests and PKCS#7 9321 structures. They are currently handled manually where necessary with 9322 some primitive wrappers for PKCS#7. The new functions behave in a 9323 manner analogous to the X509 extension functions: they allow 9324 attributes to be looked up by NID and added. 9325 9326 Later something similar to the X509V3 code would be desirable to 9327 automatically handle the encoding, decoding and printing of the 9328 more complex types. The string types like challengePassword can 9329 be handled by the string table functions. 9330 9331 Also modified the multi byte string table handling. Now there is 9332 a 'global mask' which masks out certain types. The table itself 9333 can use the flag STABLE_NO_MASK to ignore the mask setting: this 9334 is useful when for example there is only one permissible type 9335 (as in countryName) and using the mask might result in no valid 9336 types at all. 9337 [Steve Henson] 9338 9339 *) Clean up 'Finished' handling, and add functions SSL_get_finished and 9340 SSL_get_peer_finished to allow applications to obtain the latest 9341 Finished messages sent to the peer or expected from the peer, 9342 respectively. (SSL_get_peer_finished is usually the Finished message 9343 actually received from the peer, otherwise the protocol will be aborted.) 9344 9345 As the Finished message are message digests of the complete handshake 9346 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can 9347 be used for external authentication procedures when the authentication 9348 provided by SSL/TLS is not desired or is not enough. 9349 [Bodo Moeller] 9350 9351 *) Enhanced support for Alpha Linux is added. Now ./config checks if 9352 the host supports BWX extension and if Compaq C is present on the 9353 $PATH. Just exploiting of the BWX extension results in 20-30% 9354 performance kick for some algorithms, e.g. DES and RC4 to mention 9355 a couple. Compaq C in turn generates ~20% faster code for MD5 and 9356 SHA1. 9357 [Andy Polyakov] 9358 9359 *) Add support for MS "fast SGC". This is arguably a violation of the 9360 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with 9361 weak crypto and after checking the certificate is SGC a second one 9362 with strong crypto. MS SGC stops the first handshake after receiving 9363 the server certificate message and sends a second client hello. Since 9364 a server will typically do all the time consuming operations before 9365 expecting any further messages from the client (server key exchange 9366 is the most expensive) there is little difference between the two. 9367 9368 To get OpenSSL to support MS SGC we have to permit a second client 9369 hello message after we have sent server done. In addition we have to 9370 reset the MAC if we do get this second client hello. 9371 [Steve Henson] 9372 9373 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide 9374 if a DER encoded private key is RSA or DSA traditional format. Changed 9375 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional" 9376 format DER encoded private key. Newer code should use PKCS#8 format which 9377 has the key type encoded in the ASN1 structure. Added DER private key 9378 support to pkcs8 application. 9379 [Steve Henson] 9380 9381 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous 9382 ciphersuites has been selected (as required by the SSL 3/TLS 1 9383 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT 9384 is set, we interpret this as a request to violate the specification 9385 (the worst that can happen is a handshake failure, and 'correct' 9386 behaviour would result in a handshake failure anyway). 9387 [Bodo Moeller] 9388 9389 *) In SSL_CTX_add_session, take into account that there might be multiple 9390 SSL_SESSION structures with the same session ID (e.g. when two threads 9391 concurrently obtain them from an external cache). 9392 The internal cache can handle only one SSL_SESSION with a given ID, 9393 so if there's a conflict, we now throw out the old one to achieve 9394 consistency. 9395 [Bodo Moeller] 9396 9397 *) Add OIDs for idea and blowfish in CBC mode. This will allow both 9398 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to 9399 some routines that use cipher OIDs: some ciphers do not have OIDs 9400 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for 9401 example. 9402 [Steve Henson] 9403 9404 *) Simplify the trust setting structure and code. Now we just have 9405 two sequences of OIDs for trusted and rejected settings. These will 9406 typically have values the same as the extended key usage extension 9407 and any application specific purposes. 9408 9409 The trust checking code now has a default behaviour: it will just 9410 check for an object with the same NID as the passed id. Functions can 9411 be provided to override either the default behaviour or the behaviour 9412 for a given id. SSL client, server and email already have functions 9413 in place for compatibility: they check the NID and also return "trusted" 9414 if the certificate is self signed. 9415 [Steve Henson] 9416 9417 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the 9418 traditional format into an EVP_PKEY structure. 9419 [Steve Henson] 9420 9421 *) Add a password callback function PEM_cb() which either prompts for 9422 a password if usr_data is NULL or otherwise assumes it is a null 9423 terminated password. Allow passwords to be passed on command line 9424 environment or config files in a few more utilities. 9425 [Steve Henson] 9426 9427 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private 9428 keys. Add some short names for PKCS#8 PBE algorithms and allow them 9429 to be specified on the command line for the pkcs8 and pkcs12 utilities. 9430 Update documentation. 9431 [Steve Henson] 9432 9433 *) Support for ASN1 "NULL" type. This could be handled before by using 9434 ASN1_TYPE but there wasn't any function that would try to read a NULL 9435 and produce an error if it couldn't. For compatibility we also have 9436 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and 9437 don't allocate anything because they don't need to. 9438 [Steve Henson] 9439 9440 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS 9441 for details. 9442 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>] 9443 9444 *) Rebuild of the memory allocation routines used by OpenSSL code and 9445 possibly others as well. The purpose is to make an interface that 9446 provide hooks so anyone can build a separate set of allocation and 9447 deallocation routines to be used by OpenSSL, for example memory 9448 pool implementations, or something else, which was previously hard 9449 since Malloc(), Realloc() and Free() were defined as macros having 9450 the values malloc, realloc and free, respectively (except for Win32 9451 compilations). The same is provided for memory debugging code. 9452 OpenSSL already comes with functionality to find memory leaks, but 9453 this gives people a chance to debug other memory problems. 9454 9455 With these changes, a new set of functions and macros have appeared: 9456 9457 CRYPTO_set_mem_debug_functions() [F] 9458 CRYPTO_get_mem_debug_functions() [F] 9459 CRYPTO_dbg_set_options() [F] 9460 CRYPTO_dbg_get_options() [F] 9461 CRYPTO_malloc_debug_init() [M] 9462 9463 The memory debug functions are NULL by default, unless the library 9464 is compiled with CRYPTO_MDEBUG or friends is defined. If someone 9465 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which 9466 gives the standard debugging functions that come with OpenSSL) or 9467 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions 9468 provided by the library user) must be used. When the standard 9469 debugging functions are used, CRYPTO_dbg_set_options can be used to 9470 request additional information: 9471 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting 9472 the CRYPTO_MDEBUG_xxx macro when compiling the library. 9473 9474 Also, things like CRYPTO_set_mem_functions will always give the 9475 expected result (the new set of functions is used for allocation 9476 and deallocation) at all times, regardless of platform and compiler 9477 options. 9478 9479 To finish it up, some functions that were never use in any other 9480 way than through macros have a new API and new semantic: 9481 9482 CRYPTO_dbg_malloc() 9483 CRYPTO_dbg_realloc() 9484 CRYPTO_dbg_free() 9485 9486 All macros of value have retained their old syntax. 9487 [Richard Levitte and Bodo Moeller] 9488 9489 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the 9490 ordering of SMIMECapabilities wasn't in "strength order" and there 9491 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature 9492 algorithm. 9493 [Steve Henson] 9494 9495 *) Some ASN1 types with illegal zero length encoding (INTEGER, 9496 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines. 9497 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson] 9498 9499 *) Merge in my S/MIME library for OpenSSL. This provides a simple 9500 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough 9501 functionality to handle multipart/signed properly) and a utility 9502 called 'smime' to call all this stuff. This is based on code I 9503 originally wrote for Celo who have kindly allowed it to be 9504 included in OpenSSL. 9505 [Steve Henson] 9506 9507 *) Add variants des_set_key_checked and des_set_key_unchecked of 9508 des_set_key (aka des_key_sched). Global variable des_check_key 9509 decides which of these is called by des_set_key; this way 9510 des_check_key behaves as it always did, but applications and 9511 the library itself, which was buggy for des_check_key == 1, 9512 have a cleaner way to pick the version they need. 9513 [Bodo Moeller] 9514 9515 *) New function PKCS12_newpass() which changes the password of a 9516 PKCS12 structure. 9517 [Steve Henson] 9518 9519 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and 9520 dynamic mix. In both cases the ids can be used as an index into the 9521 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add() 9522 functions so they accept a list of the field values and the 9523 application doesn't need to directly manipulate the X509_TRUST 9524 structure. 9525 [Steve Henson] 9526 9527 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't 9528 need initialising. 9529 [Steve Henson] 9530 9531 *) Modify the way the V3 extension code looks up extensions. This now 9532 works in a similar way to the object code: we have some "standard" 9533 extensions in a static table which is searched with OBJ_bsearch() 9534 and the application can add dynamic ones if needed. The file 9535 crypto/x509v3/ext_dat.h now has the info: this file needs to be 9536 updated whenever a new extension is added to the core code and kept 9537 in ext_nid order. There is a simple program 'tabtest.c' which checks 9538 this. New extensions are not added too often so this file can readily 9539 be maintained manually. 9540 9541 There are two big advantages in doing things this way. The extensions 9542 can be looked up immediately and no longer need to be "added" using 9543 X509V3_add_standard_extensions(): this function now does nothing. 9544 [Side note: I get *lots* of email saying the extension code doesn't 9545 work because people forget to call this function] 9546 Also no dynamic allocation is done unless new extensions are added: 9547 so if we don't add custom extensions there is no need to call 9548 X509V3_EXT_cleanup(). 9549 [Steve Henson] 9550 9551 *) Modify enc utility's salting as follows: make salting the default. Add a 9552 magic header, so unsalted files fail gracefully instead of just decrypting 9553 to garbage. This is because not salting is a big security hole, so people 9554 should be discouraged from doing it. 9555 [Ben Laurie] 9556 9557 *) Fixes and enhancements to the 'x509' utility. It allowed a message 9558 digest to be passed on the command line but it only used this 9559 parameter when signing a certificate. Modified so all relevant 9560 operations are affected by the digest parameter including the 9561 -fingerprint and -x509toreq options. Also -x509toreq choked if a 9562 DSA key was used because it didn't fix the digest. 9563 [Steve Henson] 9564 9565 *) Initial certificate chain verify code. Currently tests the untrusted 9566 certificates for consistency with the verify purpose (which is set 9567 when the X509_STORE_CTX structure is set up) and checks the pathlength. 9568 9569 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour: 9570 this is because it will reject chains with invalid extensions whereas 9571 every previous version of OpenSSL and SSLeay made no checks at all. 9572 9573 Trust code: checks the root CA for the relevant trust settings. Trust 9574 settings have an initial value consistent with the verify purpose: e.g. 9575 if the verify purpose is for SSL client use it expects the CA to be 9576 trusted for SSL client use. However the default value can be changed to 9577 permit custom trust settings: one example of this would be to only trust 9578 certificates from a specific "secure" set of CAs. 9579 9580 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions 9581 which should be used for version portability: especially since the 9582 verify structure is likely to change more often now. 9583 9584 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions 9585 to set them. If not set then assume SSL clients will verify SSL servers 9586 and vice versa. 9587 9588 Two new options to the verify program: -untrusted allows a set of 9589 untrusted certificates to be passed in and -purpose which sets the 9590 intended purpose of the certificate. If a purpose is set then the 9591 new chain verify code is used to check extension consistency. 9592 [Steve Henson] 9593 9594 *) Support for the authority information access extension. 9595 [Steve Henson] 9596 9597 *) Modify RSA and DSA PEM read routines to transparently handle 9598 PKCS#8 format private keys. New *_PUBKEY_* functions that handle 9599 public keys in a format compatible with certificate 9600 SubjectPublicKeyInfo structures. Unfortunately there were already 9601 functions called *_PublicKey_* which used various odd formats so 9602 these are retained for compatibility: however the DSA variants were 9603 never in a public release so they have been deleted. Changed dsa/rsa 9604 utilities to handle the new format: note no releases ever handled public 9605 keys so we should be OK. 9606 9607 The primary motivation for this change is to avoid the same fiasco 9608 that dogs private keys: there are several incompatible private key 9609 formats some of which are standard and some OpenSSL specific and 9610 require various evil hacks to allow partial transparent handling and 9611 even then it doesn't work with DER formats. Given the option anything 9612 other than PKCS#8 should be dumped: but the other formats have to 9613 stay in the name of compatibility. 9614 9615 With public keys and the benefit of hindsight one standard format 9616 is used which works with EVP_PKEY, RSA or DSA structures: though 9617 it clearly returns an error if you try to read the wrong kind of key. 9618 9619 Added a -pubkey option to the 'x509' utility to output the public key. 9620 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*() 9621 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add 9622 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*()) 9623 that do the same as the EVP_PKEY_assign_*() except they up the 9624 reference count of the added key (they don't "swallow" the 9625 supplied key). 9626 [Steve Henson] 9627 9628 *) Fixes to crypto/x509/by_file.c the code to read in certificates and 9629 CRLs would fail if the file contained no certificates or no CRLs: 9630 added a new function to read in both types and return the number 9631 read: this means that if none are read it will be an error. The 9632 DER versions of the certificate and CRL reader would always fail 9633 because it isn't possible to mix certificates and CRLs in DER format 9634 without choking one or the other routine. Changed this to just read 9635 a certificate: this is the best we can do. Also modified the code 9636 in apps/verify.c to take notice of return codes: it was previously 9637 attempting to read in certificates from NULL pointers and ignoring 9638 any errors: this is one reason why the cert and CRL reader seemed 9639 to work. It doesn't check return codes from the default certificate 9640 routines: these may well fail if the certificates aren't installed. 9641 [Steve Henson] 9642 9643 *) Code to support otherName option in GeneralName. 9644 [Steve Henson] 9645 9646 *) First update to verify code. Change the verify utility 9647 so it warns if it is passed a self signed certificate: 9648 for consistency with the normal behaviour. X509_verify 9649 has been modified to it will now verify a self signed 9650 certificate if *exactly* the same certificate appears 9651 in the store: it was previously impossible to trust a 9652 single self signed certificate. This means that: 9653 openssl verify ss.pem 9654 now gives a warning about a self signed certificate but 9655 openssl verify -CAfile ss.pem ss.pem 9656 is OK. 9657 [Steve Henson] 9658 9659 *) For servers, store verify_result in SSL_SESSION data structure 9660 (and add it to external session representation). 9661 This is needed when client certificate verifications fails, 9662 but an application-provided verification callback (set by 9663 SSL_CTX_set_cert_verify_callback) allows accepting the session 9664 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK 9665 but returns 1): When the session is reused, we have to set 9666 ssl->verify_result to the appropriate error code to avoid 9667 security holes. 9668 [Bodo Moeller, problem pointed out by Lutz Jaenicke] 9669 9670 *) Fix a bug in the new PKCS#7 code: it didn't consider the 9671 case in PKCS7_dataInit() where the signed PKCS7 structure 9672 didn't contain any existing data because it was being created. 9673 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson] 9674 9675 *) Add a salt to the key derivation routines in enc.c. This 9676 forms the first 8 bytes of the encrypted file. Also add a 9677 -S option to allow a salt to be input on the command line. 9678 [Steve Henson] 9679 9680 *) New function X509_cmp(). Oddly enough there wasn't a function 9681 to compare two certificates. We do this by working out the SHA1 9682 hash and comparing that. X509_cmp() will be needed by the trust 9683 code. 9684 [Steve Henson] 9685 9686 *) SSL_get1_session() is like SSL_get_session(), but increments 9687 the reference count in the SSL_SESSION returned. 9688 [Geoff Thorpe <geoff@eu.c2.net>] 9689 9690 *) Fix for 'req': it was adding a null to request attributes. 9691 Also change the X509_LOOKUP and X509_INFO code to handle 9692 certificate auxiliary information. 9693 [Steve Henson] 9694 9695 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document 9696 the 'enc' command. 9697 [Steve Henson] 9698 9699 *) Add the possibility to add extra information to the memory leak 9700 detecting output, to form tracebacks, showing from where each 9701 allocation was originated: CRYPTO_push_info("constant string") adds 9702 the string plus current file name and line number to a per-thread 9703 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info() 9704 is like calling CYRPTO_pop_info() until the stack is empty. 9705 Also updated memory leak detection code to be multi-thread-safe. 9706 [Richard Levitte] 9707 9708 *) Add options -text and -noout to pkcs7 utility and delete the 9709 encryption options which never did anything. Update docs. 9710 [Steve Henson] 9711 9712 *) Add options to some of the utilities to allow the pass phrase 9713 to be included on either the command line (not recommended on 9714 OSes like Unix) or read from the environment. Update the 9715 manpages and fix a few bugs. 9716 [Steve Henson] 9717 9718 *) Add a few manpages for some of the openssl commands. 9719 [Steve Henson] 9720 9721 *) Fix the -revoke option in ca. It was freeing up memory twice, 9722 leaking and not finding already revoked certificates. 9723 [Steve Henson] 9724 9725 *) Extensive changes to support certificate auxiliary information. 9726 This involves the use of X509_CERT_AUX structure and X509_AUX 9727 functions. An X509_AUX function such as PEM_read_X509_AUX() 9728 can still read in a certificate file in the usual way but it 9729 will also read in any additional "auxiliary information". By 9730 doing things this way a fair degree of compatibility can be 9731 retained: existing certificates can have this information added 9732 using the new 'x509' options. 9733 9734 Current auxiliary information includes an "alias" and some trust 9735 settings. The trust settings will ultimately be used in enhanced 9736 certificate chain verification routines: currently a certificate 9737 can only be trusted if it is self signed and then it is trusted 9738 for all purposes. 9739 [Steve Henson] 9740 9741 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD). 9742 The problem was that one of the replacement routines had not been working 9743 since SSLeay releases. For now the offending routine has been replaced 9744 with non-optimised assembler. Even so, this now gives around 95% 9745 performance improvement for 1024 bit RSA signs. 9746 [Mark Cox] 9747 9748 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2 9749 handling. Most clients have the effective key size in bits equal to 9750 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key. 9751 A few however don't do this and instead use the size of the decrypted key 9752 to determine the RC2 key length and the AlgorithmIdentifier to determine 9753 the effective key length. In this case the effective key length can still 9754 be 40 bits but the key length can be 168 bits for example. This is fixed 9755 by manually forcing an RC2 key into the EVP_PKEY structure because the 9756 EVP code can't currently handle unusual RC2 key sizes: it always assumes 9757 the key length and effective key length are equal. 9758 [Steve Henson] 9759 9760 *) Add a bunch of functions that should simplify the creation of 9761 X509_NAME structures. Now you should be able to do: 9762 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0); 9763 and have it automatically work out the correct field type and fill in 9764 the structures. The more adventurous can try: 9765 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0); 9766 and it will (hopefully) work out the correct multibyte encoding. 9767 [Steve Henson] 9768 9769 *) Change the 'req' utility to use the new field handling and multibyte 9770 copy routines. Before the DN field creation was handled in an ad hoc 9771 way in req, ca, and x509 which was rather broken and didn't support 9772 BMPStrings or UTF8Strings. Since some software doesn't implement 9773 BMPStrings or UTF8Strings yet, they can be enabled using the config file 9774 using the dirstring_type option. See the new comment in the default 9775 openssl.cnf for more info. 9776 [Steve Henson] 9777 9778 *) Make crypto/rand/md_rand.c more robust: 9779 - Assure unique random numbers after fork(). 9780 - Make sure that concurrent threads access the global counter and 9781 md serializably so that we never lose entropy in them 9782 or use exactly the same state in multiple threads. 9783 Access to the large state is not always serializable because 9784 the additional locking could be a performance killer, and 9785 md should be large enough anyway. 9786 [Bodo Moeller] 9787 9788 *) New file apps/app_rand.c with commonly needed functionality 9789 for handling the random seed file. 9790 9791 Use the random seed file in some applications that previously did not: 9792 ca, 9793 dsaparam -genkey (which also ignored its '-rand' option), 9794 s_client, 9795 s_server, 9796 x509 (when signing). 9797 Except on systems with /dev/urandom, it is crucial to have a random 9798 seed file at least for key creation, DSA signing, and for DH exchanges; 9799 for RSA signatures we could do without one. 9800 9801 gendh and gendsa (unlike genrsa) used to read only the first byte 9802 of each file listed in the '-rand' option. The function as previously 9803 found in genrsa is now in app_rand.c and is used by all programs 9804 that support '-rand'. 9805 [Bodo Moeller] 9806 9807 *) In RAND_write_file, use mode 0600 for creating files; 9808 don't just chmod when it may be too late. 9809 [Bodo Moeller] 9810 9811 *) Report an error from X509_STORE_load_locations 9812 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed. 9813 [Bill Perry] 9814 9815 *) New function ASN1_mbstring_copy() this copies a string in either 9816 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format 9817 into an ASN1_STRING type. A mask of permissible types is passed 9818 and it chooses the "minimal" type to use or an error if not type 9819 is suitable. 9820 [Steve Henson] 9821 9822 *) Add function equivalents to the various macros in asn1.h. The old 9823 macros are retained with an M_ prefix. Code inside the library can 9824 use the M_ macros. External code (including the openssl utility) 9825 should *NOT* in order to be "shared library friendly". 9826 [Steve Henson] 9827 9828 *) Add various functions that can check a certificate's extensions 9829 to see if it usable for various purposes such as SSL client, 9830 server or S/MIME and CAs of these types. This is currently 9831 VERY EXPERIMENTAL but will ultimately be used for certificate chain 9832 verification. Also added a -purpose flag to x509 utility to 9833 print out all the purposes. 9834 [Steve Henson] 9835 9836 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated 9837 functions. 9838 [Steve Henson] 9839 9840 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search 9841 for, obtain and decode and extension and obtain its critical flag. 9842 This allows all the necessary extension code to be handled in a 9843 single function call. 9844 [Steve Henson] 9845 9846 *) RC4 tune-up featuring 30-40% performance improvement on most RISC 9847 platforms. See crypto/rc4/rc4_enc.c for further details. 9848 [Andy Polyakov] 9849 9850 *) New -noout option to asn1parse. This causes no output to be produced 9851 its main use is when combined with -strparse and -out to extract data 9852 from a file (which may not be in ASN.1 format). 9853 [Steve Henson] 9854 9855 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer 9856 when producing the local key id. 9857 [Richard Levitte <levitte@stacken.kth.se>] 9858 9859 *) New option -dhparam in s_server. This allows a DH parameter file to be 9860 stated explicitly. If it is not stated then it tries the first server 9861 certificate file. The previous behaviour hard coded the filename 9862 "server.pem". 9863 [Steve Henson] 9864 9865 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow 9866 a public key to be input or output. For example: 9867 openssl rsa -in key.pem -pubout -out pubkey.pem 9868 Also added necessary DSA public key functions to handle this. 9869 [Steve Henson] 9870 9871 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained 9872 in the message. This was handled by allowing 9873 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it. 9874 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>] 9875 9876 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null 9877 to the end of the strings whereas this didn't. This would cause problems 9878 if strings read with d2i_ASN1_bytes() were later modified. 9879 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>] 9880 9881 *) Fix for base64 decode bug. When a base64 bio reads only one line of 9882 data and it contains EOF it will end up returning an error. This is 9883 caused by input 46 bytes long. The cause is due to the way base64 9884 BIOs find the start of base64 encoded data. They do this by trying a 9885 trial decode on each line until they find one that works. When they 9886 do a flag is set and it starts again knowing it can pass all the 9887 data directly through the decoder. Unfortunately it doesn't reset 9888 the context it uses. This means that if EOF is reached an attempt 9889 is made to pass two EOFs through the context and this causes the 9890 resulting error. This can also cause other problems as well. As is 9891 usual with these problems it takes *ages* to find and the fix is 9892 trivial: move one line. 9893 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ] 9894 9895 *) Ugly workaround to get s_client and s_server working under Windows. The 9896 old code wouldn't work because it needed to select() on sockets and the 9897 tty (for keypresses and to see if data could be written). Win32 only 9898 supports select() on sockets so we select() with a 1s timeout on the 9899 sockets and then see if any characters are waiting to be read, if none 9900 are present then we retry, we also assume we can always write data to 9901 the tty. This isn't nice because the code then blocks until we've 9902 received a complete line of data and it is effectively polling the 9903 keyboard at 1s intervals: however it's quite a bit better than not 9904 working at all :-) A dedicated Windows application might handle this 9905 with an event loop for example. 9906 [Steve Henson] 9907 9908 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign 9909 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions 9910 will be called when RSA_sign() and RSA_verify() are used. This is useful 9911 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available. 9912 For this to work properly RSA_public_decrypt() and RSA_private_encrypt() 9913 should *not* be used: RSA_sign() and RSA_verify() must be used instead. 9914 This necessitated the support of an extra signature type NID_md5_sha1 9915 for SSL signatures and modifications to the SSL library to use it instead 9916 of calling RSA_public_decrypt() and RSA_private_encrypt(). 9917 [Steve Henson] 9918 9919 *) Add new -verify -CAfile and -CApath options to the crl program, these 9920 will lookup a CRL issuers certificate and verify the signature in a 9921 similar way to the verify program. Tidy up the crl program so it 9922 no longer accesses structures directly. Make the ASN1 CRL parsing a bit 9923 less strict. It will now permit CRL extensions even if it is not 9924 a V2 CRL: this will allow it to tolerate some broken CRLs. 9925 [Steve Henson] 9926 9927 *) Initialize all non-automatic variables each time one of the openssl 9928 sub-programs is started (this is necessary as they may be started 9929 multiple times from the "OpenSSL>" prompt). 9930 [Lennart Bang, Bodo Moeller] 9931 9932 *) Preliminary compilation option RSA_NULL which disables RSA crypto without 9933 removing all other RSA functionality (this is what NO_RSA does). This 9934 is so (for example) those in the US can disable those operations covered 9935 by the RSA patent while allowing storage and parsing of RSA keys and RSA 9936 key generation. 9937 [Steve Henson] 9938 9939 *) Non-copying interface to BIO pairs. 9940 (still largely untested) 9941 [Bodo Moeller] 9942 9943 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive 9944 ASCII string. This was handled independently in various places before. 9945 [Steve Henson] 9946 9947 *) New functions UTF8_getc() and UTF8_putc() that parse and generate 9948 UTF8 strings a character at a time. 9949 [Steve Henson] 9950 9951 *) Use client_version from client hello to select the protocol 9952 (s23_srvr.c) and for RSA client key exchange verification 9953 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications. 9954 [Bodo Moeller] 9955 9956 *) Add various utility functions to handle SPKACs, these were previously 9957 handled by poking round in the structure internals. Added new function 9958 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to 9959 print, verify and generate SPKACs. Based on an original idea from 9960 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified. 9961 [Steve Henson] 9962 9963 *) RIPEMD160 is operational on all platforms and is back in 'make test'. 9964 [Andy Polyakov] 9965 9966 *) Allow the config file extension section to be overwritten on the 9967 command line. Based on an original idea from Massimiliano Pala 9968 <madwolf@comune.modena.it>. The new option is called -extensions 9969 and can be applied to ca, req and x509. Also -reqexts to override 9970 the request extensions in req and -crlexts to override the crl extensions 9971 in ca. 9972 [Steve Henson] 9973 9974 *) Add new feature to the SPKAC handling in ca. Now you can include 9975 the same field multiple times by preceding it by "XXXX." for example: 9976 1.OU="Unit name 1" 9977 2.OU="Unit name 2" 9978 this is the same syntax as used in the req config file. 9979 [Steve Henson] 9980 9981 *) Allow certificate extensions to be added to certificate requests. These 9982 are specified in a 'req_extensions' option of the req section of the 9983 config file. They can be printed out with the -text option to req but 9984 are otherwise ignored at present. 9985 [Steve Henson] 9986 9987 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first 9988 data read consists of only the final block it would not decrypted because 9989 EVP_CipherUpdate() would correctly report zero bytes had been decrypted. 9990 A misplaced 'break' also meant the decrypted final block might not be 9991 copied until the next read. 9992 [Steve Henson] 9993 9994 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added 9995 a few extra parameters to the DH structure: these will be useful if 9996 for example we want the value of 'q' or implement X9.42 DH. 9997 [Steve Henson] 9998 9999 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and 10000 provides hooks that allow the default DSA functions or functions on a 10001 "per key" basis to be replaced. This allows hardware acceleration and 10002 hardware key storage to be handled without major modification to the 10003 library. Also added low level modexp hooks and CRYPTO_EX structure and 10004 associated functions. 10005 [Steve Henson] 10006 10007 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO 10008 as "read only": it can't be written to and the buffer it points to will 10009 not be freed. Reading from a read only BIO is much more efficient than 10010 a normal memory BIO. This was added because there are several times when 10011 an area of memory needs to be read from a BIO. The previous method was 10012 to create a memory BIO and write the data to it, this results in two 10013 copies of the data and an O(n^2) reading algorithm. There is a new 10014 function BIO_new_mem_buf() which creates a read only memory BIO from 10015 an area of memory. Also modified the PKCS#7 routines to use read only 10016 memory BIOs. 10017 [Steve Henson] 10018 10019 *) Bugfix: ssl23_get_client_hello did not work properly when called in 10020 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of 10021 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read, 10022 but a retry condition occured while trying to read the rest. 10023 [Bodo Moeller] 10024 10025 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as 10026 NID_pkcs7_encrypted by default: this was wrong since this should almost 10027 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle 10028 the encrypted data type: this is a more sensible place to put it and it 10029 allows the PKCS#12 code to be tidied up that duplicated this 10030 functionality. 10031 [Steve Henson] 10032 10033 *) Changed obj_dat.pl script so it takes its input and output files on 10034 the command line. This should avoid shell escape redirection problems 10035 under Win32. 10036 [Steve Henson] 10037 10038 *) Initial support for certificate extension requests, these are included 10039 in things like Xenroll certificate requests. Included functions to allow 10040 extensions to be obtained and added. 10041 [Steve Henson] 10042 10043 *) -crlf option to s_client and s_server for sending newlines as 10044 CRLF (as required by many protocols). 10045 [Bodo Moeller] 10046 10047 Changes between 0.9.3a and 0.9.4 [09 Aug 1999] 10048 10049 *) Install libRSAglue.a when OpenSSL is built with RSAref. 10050 [Ralf S. Engelschall] 10051 10052 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency. 10053 [Andrija Antonijevic <TheAntony2@bigfoot.com>] 10054 10055 *) Fix -startdate and -enddate (which was missing) arguments to 'ca' 10056 program. 10057 [Steve Henson] 10058 10059 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as 10060 DH parameters/keys (q is lost during that conversion, but the resulting 10061 DH parameters contain its length). 10062 10063 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is 10064 much faster than DH_generate_parameters (which creates parameters 10065 where p = 2*q + 1), and also the smaller q makes DH computations 10066 much more efficient (160-bit exponentiation instead of 1024-bit 10067 exponentiation); so this provides a convenient way to support DHE 10068 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of 10069 utter importance to use 10070 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE); 10071 or 10072 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE); 10073 when such DH parameters are used, because otherwise small subgroup 10074 attacks may become possible! 10075 [Bodo Moeller] 10076 10077 *) Avoid memory leak in i2d_DHparams. 10078 [Bodo Moeller] 10079 10080 *) Allow the -k option to be used more than once in the enc program: 10081 this allows the same encrypted message to be read by multiple recipients. 10082 [Steve Henson] 10083 10084 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts 10085 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then 10086 it will always use the numerical form of the OID, even if it has a short 10087 or long name. 10088 [Steve Henson] 10089 10090 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp 10091 method only got called if p,q,dmp1,dmq1,iqmp components were present, 10092 otherwise bn_mod_exp was called. In the case of hardware keys for example 10093 no private key components need be present and it might store extra data 10094 in the RSA structure, which cannot be accessed from bn_mod_exp. 10095 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for 10096 private key operations. 10097 [Steve Henson] 10098 10099 *) Added support for SPARC Linux. 10100 [Andy Polyakov] 10101 10102 *) pem_password_cb function type incompatibly changed from 10103 typedef int pem_password_cb(char *buf, int size, int rwflag); 10104 to 10105 ....(char *buf, int size, int rwflag, void *userdata); 10106 so that applications can pass data to their callbacks: 10107 The PEM[_ASN1]_{read,write}... functions and macros now take an 10108 additional void * argument, which is just handed through whenever 10109 the password callback is called. 10110 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller] 10111 10112 New function SSL_CTX_set_default_passwd_cb_userdata. 10113 10114 Compatibility note: As many C implementations push function arguments 10115 onto the stack in reverse order, the new library version is likely to 10116 interoperate with programs that have been compiled with the old 10117 pem_password_cb definition (PEM_whatever takes some data that 10118 happens to be on the stack as its last argument, and the callback 10119 just ignores this garbage); but there is no guarantee whatsoever that 10120 this will work. 10121 10122 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=... 10123 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused 10124 problems not only on Windows, but also on some Unix platforms. 10125 To avoid problematic command lines, these definitions are now in an 10126 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl 10127 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds). 10128 [Bodo Moeller] 10129 10130 *) MIPS III/IV assembler module is reimplemented. 10131 [Andy Polyakov] 10132 10133 *) More DES library cleanups: remove references to srand/rand and 10134 delete an unused file. 10135 [Ulf M��ller] 10136 10137 *) Add support for the the free Netwide assembler (NASM) under Win32, 10138 since not many people have MASM (ml) and it can be hard to obtain. 10139 This is currently experimental but it seems to work OK and pass all 10140 the tests. Check out INSTALL.W32 for info. 10141 [Steve Henson] 10142 10143 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections 10144 without temporary keys kept an extra copy of the server key, 10145 and connections with temporary keys did not free everything in case 10146 of an error. 10147 [Bodo Moeller] 10148 10149 *) New function RSA_check_key and new openssl rsa option -check 10150 for verifying the consistency of RSA keys. 10151 [Ulf Moeller, Bodo Moeller] 10152 10153 *) Various changes to make Win32 compile work: 10154 1. Casts to avoid "loss of data" warnings in p5_crpt2.c 10155 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned 10156 comparison" warnings. 10157 3. Add sk_<TYPE>_sort to DEF file generator and do make update. 10158 [Steve Henson] 10159 10160 *) Add a debugging option to PKCS#5 v2 key generation function: when 10161 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and 10162 derived keys are printed to stderr. 10163 [Steve Henson] 10164 10165 *) Copy the flags in ASN1_STRING_dup(). 10166 [Roman E. Pavlov <pre@mo.msk.ru>] 10167 10168 *) The x509 application mishandled signing requests containing DSA 10169 keys when the signing key was also DSA and the parameters didn't match. 10170 10171 It was supposed to omit the parameters when they matched the signing key: 10172 the verifying software was then supposed to automatically use the CA's 10173 parameters if they were absent from the end user certificate. 10174 10175 Omitting parameters is no longer recommended. The test was also 10176 the wrong way round! This was probably due to unusual behaviour in 10177 EVP_cmp_parameters() which returns 1 if the parameters match. 10178 This meant that parameters were omitted when they *didn't* match and 10179 the certificate was useless. Certificates signed with 'ca' didn't have 10180 this bug. 10181 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>] 10182 10183 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems. 10184 The interface is as follows: 10185 Applications can use 10186 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(), 10187 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop(); 10188 "off" is now the default. 10189 The library internally uses 10190 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(), 10191 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on() 10192 to disable memory-checking temporarily. 10193 10194 Some inconsistent states that previously were possible (and were 10195 even the default) are now avoided. 10196 10197 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time 10198 with each memory chunk allocated; this is occasionally more helpful 10199 than just having a counter. 10200 10201 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID. 10202 10203 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future 10204 extensions. 10205 [Bodo Moeller] 10206 10207 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX), 10208 which largely parallels "options", but is for changing API behaviour, 10209 whereas "options" are about protocol behaviour. 10210 Initial "mode" flags are: 10211 10212 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when 10213 a single record has been written. 10214 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write 10215 retries use the same buffer location. 10216 (But all of the contents must be 10217 copied!) 10218 [Bodo Moeller] 10219 10220 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options 10221 worked. 10222 10223 *) Fix problems with no-hmac etc. 10224 [Ulf M��ller, pointed out by Brian Wellington <bwelling@tislabs.com>] 10225 10226 *) New functions RSA_get_default_method(), RSA_set_method() and 10227 RSA_get_method(). These allows replacement of RSA_METHODs without having 10228 to mess around with the internals of an RSA structure. 10229 [Steve Henson] 10230 10231 *) Fix memory leaks in DSA_do_sign and DSA_is_prime. 10232 Also really enable memory leak checks in openssl.c and in some 10233 test programs. 10234 [Chad C. Mulligan, Bodo Moeller] 10235 10236 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess 10237 up the length of negative integers. This has now been simplified to just 10238 store the length when it is first determined and use it later, rather 10239 than trying to keep track of where data is copied and updating it to 10240 point to the end. 10241 [Steve Henson, reported by Brien Wheeler 10242 <bwheeler@authentica-security.com>] 10243 10244 *) Add a new function PKCS7_signatureVerify. This allows the verification 10245 of a PKCS#7 signature but with the signing certificate passed to the 10246 function itself. This contrasts with PKCS7_dataVerify which assumes the 10247 certificate is present in the PKCS#7 structure. This isn't always the 10248 case: certificates can be omitted from a PKCS#7 structure and be 10249 distributed by "out of band" means (such as a certificate database). 10250 [Steve Henson] 10251 10252 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the 10253 function prototypes in pem.h, also change util/mkdef.pl to add the 10254 necessary function names. 10255 [Steve Henson] 10256 10257 *) mk1mf.pl (used by Windows builds) did not properly read the 10258 options set by Configure in the top level Makefile, and Configure 10259 was not even able to write more than one option correctly. 10260 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended. 10261 [Bodo Moeller] 10262 10263 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config 10264 file to be loaded from a BIO or FILE pointer. The BIO version will 10265 for example allow memory BIOs to contain config info. 10266 [Steve Henson] 10267 10268 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS. 10269 Whoever hopes to achieve shared-library compatibility across versions 10270 must use this, not the compile-time macro. 10271 (Exercise 0.9.4: Which is the minimum library version required by 10272 such programs?) 10273 Note: All this applies only to multi-threaded programs, others don't 10274 need locks. 10275 [Bodo Moeller] 10276 10277 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests 10278 through a BIO pair triggered the default case, i.e. 10279 SSLerr(...,SSL_R_UNKNOWN_STATE). 10280 [Bodo Moeller] 10281 10282 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications 10283 can use the SSL library even if none of the specific BIOs is 10284 appropriate. 10285 [Bodo Moeller] 10286 10287 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value 10288 for the encoded length. 10289 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>] 10290 10291 *) Add initial documentation of the X509V3 functions. 10292 [Steve Henson] 10293 10294 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and 10295 PEM_write_bio_PKCS8PrivateKey() that are equivalent to 10296 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more 10297 secure PKCS#8 private key format with a high iteration count. 10298 [Steve Henson] 10299 10300 *) Fix determination of Perl interpreter: A perl or perl5 10301 _directory_ in $PATH was also accepted as the interpreter. 10302 [Ralf S. Engelschall] 10303 10304 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking 10305 wrong with it but it was very old and did things like calling 10306 PEM_ASN1_read() directly and used MD5 for the hash not to mention some 10307 unusual formatting. 10308 [Steve Henson] 10309 10310 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed 10311 to use the new extension code. 10312 [Steve Henson] 10313 10314 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c 10315 with macros. This should make it easier to change their form, add extra 10316 arguments etc. Fix a few PEM prototypes which didn't have cipher as a 10317 constant. 10318 [Steve Henson] 10319 10320 *) Add to configuration table a new entry that can specify an alternative 10321 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep, 10322 according to Mark Crispin <MRC@Panda.COM>. 10323 [Bodo Moeller] 10324 10325#if 0 10326 *) DES CBC did not update the IV. Weird. 10327 [Ben Laurie] 10328#else 10329 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does. 10330 Changing the behaviour of the former might break existing programs -- 10331 where IV updating is needed, des_ncbc_encrypt can be used. 10332#endif 10333 10334 *) When bntest is run from "make test" it drives bc to check its 10335 calculations, as well as internally checking them. If an internal check 10336 fails, it needs to cause bc to give a non-zero result or make test carries 10337 on without noticing the failure. Fixed. 10338 [Ben Laurie] 10339 10340 *) DES library cleanups. 10341 [Ulf M��ller] 10342 10343 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be 10344 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit 10345 ciphers. NOTE: although the key derivation function has been verified 10346 against some published test vectors it has not been extensively tested 10347 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use 10348 of v2.0. 10349 [Steve Henson] 10350 10351 *) Instead of "mkdir -p", which is not fully portable, use new 10352 Perl script "util/mkdir-p.pl". 10353 [Bodo Moeller] 10354 10355 *) Rewrite the way password based encryption (PBE) is handled. It used to 10356 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter 10357 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms 10358 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now 10359 the 'parameter' field of the AlgorithmIdentifier is passed to the 10360 underlying key generation function so it must do its own ASN1 parsing. 10361 This has also changed the EVP_PBE_CipherInit() function which now has a 10362 'parameter' argument instead of literal salt and iteration count values 10363 and the function EVP_PBE_ALGOR_CipherInit() has been deleted. 10364 [Steve Henson] 10365 10366 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms 10367 and PKCS#8 functionality. New 'pkcs8' application linked to openssl. 10368 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE 10369 KEY" because this clashed with PKCS#8 unencrypted string. Since this 10370 value was just used as a "magic string" and not used directly its 10371 value doesn't matter. 10372 [Steve Henson] 10373 10374 *) Introduce some semblance of const correctness to BN. Shame C doesn't 10375 support mutable. 10376 [Ben Laurie] 10377 10378 *) "linux-sparc64" configuration (ultrapenguin). 10379 [Ray Miller <ray.miller@oucs.ox.ac.uk>] 10380 "linux-sparc" configuration. 10381 [Christian Forster <fo@hawo.stw.uni-erlangen.de>] 10382 10383 *) config now generates no-xxx options for missing ciphers. 10384 [Ulf M��ller] 10385 10386 *) Support the EBCDIC character set (work in progress). 10387 File ebcdic.c not yet included because it has a different license. 10388 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 10389 10390 *) Support BS2000/OSD-POSIX. 10391 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 10392 10393 *) Make callbacks for key generation use void * instead of char *. 10394 [Ben Laurie] 10395 10396 *) Make S/MIME samples compile (not yet tested). 10397 [Ben Laurie] 10398 10399 *) Additional typesafe stacks. 10400 [Ben Laurie] 10401 10402 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x). 10403 [Bodo Moeller] 10404 10405 10406 Changes between 0.9.3 and 0.9.3a [29 May 1999] 10407 10408 *) New configuration variant "sco5-gcc". 10409 10410 *) Updated some demos. 10411 [Sean O Riordain, Wade Scholine] 10412 10413 *) Add missing BIO_free at exit of pkcs12 application. 10414 [Wu Zhigang] 10415 10416 *) Fix memory leak in conf.c. 10417 [Steve Henson] 10418 10419 *) Updates for Win32 to assembler version of MD5. 10420 [Steve Henson] 10421 10422 *) Set #! path to perl in apps/der_chop to where we found it 10423 instead of using a fixed path. 10424 [Bodo Moeller] 10425 10426 *) SHA library changes for irix64-mips4-cc. 10427 [Andy Polyakov] 10428 10429 *) Improvements for VMS support. 10430 [Richard Levitte] 10431 10432 10433 Changes between 0.9.2b and 0.9.3 [24 May 1999] 10434 10435 *) Bignum library bug fix. IRIX 6 passes "make test" now! 10436 This also avoids the problems with SC4.2 and unpatched SC5. 10437 [Andy Polyakov <appro@fy.chalmers.se>] 10438 10439 *) New functions sk_num, sk_value and sk_set to replace the previous macros. 10440 These are required because of the typesafe stack would otherwise break 10441 existing code. If old code used a structure member which used to be STACK 10442 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with 10443 sk_num or sk_value it would produce an error because the num, data members 10444 are not present in STACK_OF. Now it just produces a warning. sk_set 10445 replaces the old method of assigning a value to sk_value 10446 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code 10447 that does this will no longer work (and should use sk_set instead) but 10448 this could be regarded as a "questionable" behaviour anyway. 10449 [Steve Henson] 10450 10451 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now 10452 correctly handle encrypted S/MIME data. 10453 [Steve Henson] 10454 10455 *) Change type of various DES function arguments from des_cblock 10456 (which means, in function argument declarations, pointer to char) 10457 to des_cblock * (meaning pointer to array with 8 char elements), 10458 which allows the compiler to do more typechecking; it was like 10459 that back in SSLeay, but with lots of ugly casts. 10460 10461 Introduce new type const_des_cblock. 10462 [Bodo Moeller] 10463 10464 *) Reorganise the PKCS#7 library and get rid of some of the more obvious 10465 problems: find RecipientInfo structure that matches recipient certificate 10466 and initialise the ASN1 structures properly based on passed cipher. 10467 [Steve Henson] 10468 10469 *) Belatedly make the BN tests actually check the results. 10470 [Ben Laurie] 10471 10472 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion 10473 to and from BNs: it was completely broken. New compilation option 10474 NEG_PUBKEY_BUG to allow for some broken certificates that encode public 10475 key elements as negative integers. 10476 [Steve Henson] 10477 10478 *) Reorganize and speed up MD5. 10479 [Andy Polyakov <appro@fy.chalmers.se>] 10480 10481 *) VMS support. 10482 [Richard Levitte <richard@levitte.org>] 10483 10484 *) New option -out to asn1parse to allow the parsed structure to be 10485 output to a file. This is most useful when combined with the -strparse 10486 option to examine the output of things like OCTET STRINGS. 10487 [Steve Henson] 10488 10489 *) Make SSL library a little more fool-proof by not requiring any longer 10490 that SSL_set_{accept,connect}_state be called before 10491 SSL_{accept,connect} may be used (SSL_set_..._state is omitted 10492 in many applications because usually everything *appeared* to work as 10493 intended anyway -- now it really works as intended). 10494 [Bodo Moeller] 10495 10496 *) Move openssl.cnf out of lib/. 10497 [Ulf M��ller] 10498 10499 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall 10500 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes 10501 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+ 10502 [Ralf S. Engelschall] 10503 10504 *) Various fixes to the EVP and PKCS#7 code. It may now be able to 10505 handle PKCS#7 enveloped data properly. 10506 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve] 10507 10508 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of 10509 copying pointers. The cert_st handling is changed by this in 10510 various ways (and thus what used to be known as ctx->default_cert 10511 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert 10512 any longer when s->cert does not give us what we need). 10513 ssl_cert_instantiate becomes obsolete by this change. 10514 As soon as we've got the new code right (possibly it already is?), 10515 we have solved a couple of bugs of the earlier code where s->cert 10516 was used as if it could not have been shared with other SSL structures. 10517 10518 Note that using the SSL API in certain dirty ways now will result 10519 in different behaviour than observed with earlier library versions: 10520 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx) 10521 does not influence s as it used to. 10522 10523 In order to clean up things more thoroughly, inside SSL_SESSION 10524 we don't use CERT any longer, but a new structure SESS_CERT 10525 that holds per-session data (if available); currently, this is 10526 the peer's certificate chain and, for clients, the server's certificate 10527 and temporary key. CERT holds only those values that can have 10528 meaningful defaults in an SSL_CTX. 10529 [Bodo Moeller] 10530 10531 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure 10532 from the internal representation. Various PKCS#7 fixes: remove some 10533 evil casts and set the enc_dig_alg field properly based on the signing 10534 key type. 10535 [Steve Henson] 10536 10537 *) Allow PKCS#12 password to be set from the command line or the 10538 environment. Let 'ca' get its config file name from the environment 10539 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req' 10540 and 'x509'). 10541 [Steve Henson] 10542 10543 *) Allow certificate policies extension to use an IA5STRING for the 10544 organization field. This is contrary to the PKIX definition but 10545 VeriSign uses it and IE5 only recognises this form. Document 'x509' 10546 extension option. 10547 [Steve Henson] 10548 10549 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic, 10550 without disallowing inline assembler and the like for non-pedantic builds. 10551 [Ben Laurie] 10552 10553 *) Support Borland C++ builder. 10554 [Janez Jere <jj@void.si>, modified by Ulf M��ller] 10555 10556 *) Support Mingw32. 10557 [Ulf M��ller] 10558 10559 *) SHA-1 cleanups and performance enhancements. 10560 [Andy Polyakov <appro@fy.chalmers.se>] 10561 10562 *) Sparc v8plus assembler for the bignum library. 10563 [Andy Polyakov <appro@fy.chalmers.se>] 10564 10565 *) Accept any -xxx and +xxx compiler options in Configure. 10566 [Ulf M��ller] 10567 10568 *) Update HPUX configuration. 10569 [Anonymous] 10570 10571 *) Add missing sk_<type>_unshift() function to safestack.h 10572 [Ralf S. Engelschall] 10573 10574 *) New function SSL_CTX_use_certificate_chain_file that sets the 10575 "extra_cert"s in addition to the certificate. (This makes sense 10576 only for "PEM" format files, as chains as a whole are not 10577 DER-encoded.) 10578 [Bodo Moeller] 10579 10580 *) Support verify_depth from the SSL API. 10581 x509_vfy.c had what can be considered an off-by-one-error: 10582 Its depth (which was not part of the external interface) 10583 was actually counting the number of certificates in a chain; 10584 now it really counts the depth. 10585 [Bodo Moeller] 10586 10587 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used 10588 instead of X509err, which often resulted in confusing error 10589 messages since the error codes are not globally unique 10590 (e.g. an alleged error in ssl3_accept when a certificate 10591 didn't match the private key). 10592 10593 *) New function SSL_CTX_set_session_id_context that allows to set a default 10594 value (so that you don't need SSL_set_session_id_context for each 10595 connection using the SSL_CTX). 10596 [Bodo Moeller] 10597 10598 *) OAEP decoding bug fix. 10599 [Ulf M��ller] 10600 10601 *) Support INSTALL_PREFIX for package builders, as proposed by 10602 David Harris. 10603 [Bodo Moeller] 10604 10605 *) New Configure options "threads" and "no-threads". For systems 10606 where the proper compiler options are known (currently Solaris 10607 and Linux), "threads" is the default. 10608 [Bodo Moeller] 10609 10610 *) New script util/mklink.pl as a faster substitute for util/mklink.sh. 10611 [Bodo Moeller] 10612 10613 *) Install various scripts to $(OPENSSLDIR)/misc, not to 10614 $(INSTALLTOP)/bin -- they shouldn't clutter directories 10615 such as /usr/local/bin. 10616 [Bodo Moeller] 10617 10618 *) "make linux-shared" to build shared libraries. 10619 [Niels Poppe <niels@netbox.org>] 10620 10621 *) New Configure option no-<cipher> (rsa, idea, rc5, ...). 10622 [Ulf M��ller] 10623 10624 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for 10625 extension adding in x509 utility. 10626 [Steve Henson] 10627 10628 *) Remove NOPROTO sections and error code comments. 10629 [Ulf M��ller] 10630 10631 *) Partial rewrite of the DEF file generator to now parse the ANSI 10632 prototypes. 10633 [Steve Henson] 10634 10635 *) New Configure options --prefix=DIR and --openssldir=DIR. 10636 [Ulf M��ller] 10637 10638 *) Complete rewrite of the error code script(s). It is all now handled 10639 by one script at the top level which handles error code gathering, 10640 header rewriting and C source file generation. It should be much better 10641 than the old method: it now uses a modified version of Ulf's parser to 10642 read the ANSI prototypes in all header files (thus the old K&R definitions 10643 aren't needed for error creation any more) and do a better job of 10644 translating function codes into names. The old 'ASN1 error code imbedded 10645 in a comment' is no longer necessary and it doesn't use .err files which 10646 have now been deleted. Also the error code call doesn't have to appear all 10647 on one line (which resulted in some large lines...). 10648 [Steve Henson] 10649 10650 *) Change #include filenames from <foo.h> to <openssl/foo.h>. 10651 [Bodo Moeller] 10652 10653 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return 10654 0 (which usually indicates a closed connection), but continue reading. 10655 [Bodo Moeller] 10656 10657 *) Fix some race conditions. 10658 [Bodo Moeller] 10659 10660 *) Add support for CRL distribution points extension. Add Certificate 10661 Policies and CRL distribution points documentation. 10662 [Steve Henson] 10663 10664 *) Move the autogenerated header file parts to crypto/opensslconf.h. 10665 [Ulf M��ller] 10666 10667 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of 10668 8 of keying material. Merlin has also confirmed interop with this fix 10669 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0. 10670 [Merlin Hughes <merlin@baltimore.ie>] 10671 10672 *) Fix lots of warnings. 10673 [Richard Levitte <levitte@stacken.kth.se>] 10674 10675 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if 10676 the directory spec didn't end with a LIST_SEPARATOR_CHAR. 10677 [Richard Levitte <levitte@stacken.kth.se>] 10678 10679 *) Fix problems with sizeof(long) == 8. 10680 [Andy Polyakov <appro@fy.chalmers.se>] 10681 10682 *) Change functions to ANSI C. 10683 [Ulf M��ller] 10684 10685 *) Fix typos in error codes. 10686 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf M��ller] 10687 10688 *) Remove defunct assembler files from Configure. 10689 [Ulf M��ller] 10690 10691 *) SPARC v8 assembler BIGNUM implementation. 10692 [Andy Polyakov <appro@fy.chalmers.se>] 10693 10694 *) Support for Certificate Policies extension: both print and set. 10695 Various additions to support the r2i method this uses. 10696 [Steve Henson] 10697 10698 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could 10699 return a const string when you are expecting an allocated buffer. 10700 [Ben Laurie] 10701 10702 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE 10703 types DirectoryString and DisplayText. 10704 [Steve Henson] 10705 10706 *) Add code to allow r2i extensions to access the configuration database, 10707 add an LHASH database driver and add several ctx helper functions. 10708 [Steve Henson] 10709 10710 *) Fix an evil bug in bn_expand2() which caused various BN functions to 10711 fail when they extended the size of a BIGNUM. 10712 [Steve Henson] 10713 10714 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to 10715 support typesafe stack. 10716 [Steve Henson] 10717 10718 *) Fix typo in SSL_[gs]et_options(). 10719 [Nils Frostberg <nils@medcom.se>] 10720 10721 *) Delete various functions and files that belonged to the (now obsolete) 10722 old X509V3 handling code. 10723 [Steve Henson] 10724 10725 *) New Configure option "rsaref". 10726 [Ulf M��ller] 10727 10728 *) Don't auto-generate pem.h. 10729 [Bodo Moeller] 10730 10731 *) Introduce type-safe ASN.1 SETs. 10732 [Ben Laurie] 10733 10734 *) Convert various additional casted stacks to type-safe STACK_OF() variants. 10735 [Ben Laurie, Ralf S. Engelschall, Steve Henson] 10736 10737 *) Introduce type-safe STACKs. This will almost certainly break lots of code 10738 that links with OpenSSL (well at least cause lots of warnings), but fear 10739 not: the conversion is trivial, and it eliminates loads of evil casts. A 10740 few STACKed things have been converted already. Feel free to convert more. 10741 In the fullness of time, I'll do away with the STACK type altogether. 10742 [Ben Laurie] 10743 10744 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate 10745 specified in <certfile> by updating the entry in the index.txt file. 10746 This way one no longer has to edit the index.txt file manually for 10747 revoking a certificate. The -revoke option does the gory details now. 10748 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall] 10749 10750 *) Fix `openssl crl -noout -text' combination where `-noout' killed the 10751 `-text' option at all and this way the `-noout -text' combination was 10752 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'. 10753 [Ralf S. Engelschall] 10754 10755 *) Make sure a corresponding plain text error message exists for the 10756 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a 10757 verify callback function determined that a certificate was revoked. 10758 [Ralf S. Engelschall] 10759 10760 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for 10761 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test 10762 all available cipers including rc5, which was forgotten until now. 10763 In order to let the testing shell script know which algorithms 10764 are available, a new (up to now undocumented) command 10765 "openssl list-cipher-commands" is used. 10766 [Bodo Moeller] 10767 10768 *) Bugfix: s_client occasionally would sleep in select() when 10769 it should have checked SSL_pending() first. 10770 [Bodo Moeller] 10771 10772 *) New functions DSA_do_sign and DSA_do_verify to provide access to 10773 the raw DSA values prior to ASN.1 encoding. 10774 [Ulf M��ller] 10775 10776 *) Tweaks to Configure 10777 [Niels Poppe <niels@netbox.org>] 10778 10779 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support, 10780 yet... 10781 [Steve Henson] 10782 10783 *) New variables $(RANLIB) and $(PERL) in the Makefiles. 10784 [Ulf M��ller] 10785 10786 *) New config option to avoid instructions that are illegal on the 80386. 10787 The default code is faster, but requires at least a 486. 10788 [Ulf M��ller] 10789 10790 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and 10791 SSL2_SERVER_VERSION (not used at all) macros, which are now the 10792 same as SSL2_VERSION anyway. 10793 [Bodo Moeller] 10794 10795 *) New "-showcerts" option for s_client. 10796 [Bodo Moeller] 10797 10798 *) Still more PKCS#12 integration. Add pkcs12 application to openssl 10799 application. Various cleanups and fixes. 10800 [Steve Henson] 10801 10802 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and 10803 modify error routines to work internally. Add error codes and PBE init 10804 to library startup routines. 10805 [Steve Henson] 10806 10807 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and 10808 packing functions to asn1 and evp. Changed function names and error 10809 codes along the way. 10810 [Steve Henson] 10811 10812 *) PKCS12 integration: and so it begins... First of several patches to 10813 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12 10814 objects to objects.h 10815 [Steve Henson] 10816 10817 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1 10818 and display support for Thawte strong extranet extension. 10819 [Steve Henson] 10820 10821 *) Add LinuxPPC support. 10822 [Jeff Dubrule <igor@pobox.org>] 10823 10824 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to 10825 bn_div_words in alpha.s. 10826 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie] 10827 10828 *) Make sure the RSA OAEP test is skipped under -DRSAref because 10829 OAEP isn't supported when OpenSSL is built with RSAref. 10830 [Ulf Moeller <ulf@fitug.de>] 10831 10832 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h 10833 so they no longer are missing under -DNOPROTO. 10834 [Soren S. Jorvang <soren@t.dk>] 10835 10836 10837 Changes between 0.9.1c and 0.9.2b [22 Mar 1999] 10838 10839 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still 10840 doesn't work when the session is reused. Coming soon! 10841 [Ben Laurie] 10842 10843 *) Fix a security hole, that allows sessions to be reused in the wrong 10844 context thus bypassing client cert protection! All software that uses 10845 client certs and session caches in multiple contexts NEEDS PATCHING to 10846 allow session reuse! A fuller solution is in the works. 10847 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)] 10848 10849 *) Some more source tree cleanups (removed obsolete files 10850 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed 10851 permission on "config" script to be executable) and a fix for the INSTALL 10852 document. 10853 [Ulf Moeller <ulf@fitug.de>] 10854 10855 *) Remove some legacy and erroneous uses of malloc, free instead of 10856 Malloc, Free. 10857 [Lennart Bang <lob@netstream.se>, with minor changes by Steve] 10858 10859 *) Make rsa_oaep_test return non-zero on error. 10860 [Ulf Moeller <ulf@fitug.de>] 10861 10862 *) Add support for native Solaris shared libraries. Configure 10863 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice 10864 if someone would make that last step automatic. 10865 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>] 10866 10867 *) ctx_size was not built with the right compiler during "make links". Fixed. 10868 [Ben Laurie] 10869 10870 *) Change the meaning of 'ALL' in the cipher list. It now means "everything 10871 except NULL ciphers". This means the default cipher list will no longer 10872 enable NULL ciphers. They need to be specifically enabled e.g. with 10873 the string "DEFAULT:eNULL". 10874 [Steve Henson] 10875 10876 *) Fix to RSA private encryption routines: if p < q then it would 10877 occasionally produce an invalid result. This will only happen with 10878 externally generated keys because OpenSSL (and SSLeay) ensure p > q. 10879 [Steve Henson] 10880 10881 *) Be less restrictive and allow also `perl util/perlpath.pl 10882 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin', 10883 because this way one can also use an interpreter named `perl5' (which is 10884 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still 10885 installed as `perl'). 10886 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 10887 10888 *) Let util/clean-depend.pl work also with older Perl 5.00x versions. 10889 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 10890 10891 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add 10892 advapi32.lib to Win32 build and change the pem test comparision 10893 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the 10894 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h 10895 and crypto/des/ede_cbcm_enc.c. 10896 [Steve Henson] 10897 10898 *) DES quad checksum was broken on big-endian architectures. Fixed. 10899 [Ben Laurie] 10900 10901 *) Comment out two functions in bio.h that aren't implemented. Fix up the 10902 Win32 test batch file so it (might) work again. The Win32 test batch file 10903 is horrible: I feel ill.... 10904 [Steve Henson] 10905 10906 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected 10907 in e_os.h. Audit of header files to check ANSI and non ANSI 10908 sections: 10 functions were absent from non ANSI section and not exported 10909 from Windows DLLs. Fixed up libeay.num for new functions. 10910 [Steve Henson] 10911 10912 *) Make `openssl version' output lines consistent. 10913 [Ralf S. Engelschall] 10914 10915 *) Fix Win32 symbol export lists for BIO functions: Added 10916 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data 10917 to ms/libeay{16,32}.def. 10918 [Ralf S. Engelschall] 10919 10920 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled 10921 fine under Unix and passes some trivial tests I've now added. But the 10922 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was 10923 added to make sure no one expects that this stuff really works in the 10924 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources 10925 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and 10926 openssl_bio.xs. 10927 [Ralf S. Engelschall] 10928 10929 *) Fix the generation of two part addresses in perl. 10930 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie] 10931 10932 *) Add config entry for Linux on MIPS. 10933 [John Tobey <jtobey@channel1.com>] 10934 10935 *) Make links whenever Configure is run, unless we are on Windoze. 10936 [Ben Laurie] 10937 10938 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf. 10939 Currently only issuerAltName and AuthorityKeyIdentifier make any sense 10940 in CRLs. 10941 [Steve Henson] 10942 10943 *) Add a useful kludge to allow package maintainers to specify compiler and 10944 other platforms details on the command line without having to patch the 10945 Configure script everytime: One now can use ``perl Configure 10946 <id>:<details>'', i.e. platform ids are allowed to have details appended 10947 to them (seperated by colons). This is treated as there would be a static 10948 pre-configured entry in Configure's %table under key <id> with value 10949 <details> and ``perl Configure <id>'' is called. So, when you want to 10950 perform a quick test-compile under FreeBSD 3.1 with pgcc and without 10951 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"'' 10952 now, which overrides the FreeBSD-elf entry on-the-fly. 10953 [Ralf S. Engelschall] 10954 10955 *) Disable new TLS1 ciphersuites by default: they aren't official yet. 10956 [Ben Laurie] 10957 10958 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified 10959 on the `perl Configure ...' command line. This way one can compile 10960 OpenSSL libraries with Position Independent Code (PIC) which is needed 10961 for linking it into DSOs. 10962 [Ralf S. Engelschall] 10963 10964 *) Remarkably, export ciphers were totally broken and no-one had noticed! 10965 Fixed. 10966 [Ben Laurie] 10967 10968 *) Cleaned up the LICENSE document: The official contact for any license 10969 questions now is the OpenSSL core team under openssl-core@openssl.org. 10970 And add a paragraph about the dual-license situation to make sure people 10971 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply 10972 to the OpenSSL toolkit. 10973 [Ralf S. Engelschall] 10974 10975 *) General source tree makefile cleanups: Made `making xxx in yyy...' 10976 display consistent in the source tree and replaced `/bin/rm' by `rm'. 10977 Additonally cleaned up the `make links' target: Remove unnecessary 10978 semicolons, subsequent redundant removes, inline point.sh into mklink.sh 10979 to speed processing and no longer clutter the display with confusing 10980 stuff. Instead only the actually done links are displayed. 10981 [Ralf S. Engelschall] 10982 10983 *) Permit null encryption ciphersuites, used for authentication only. It used 10984 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this. 10985 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null 10986 encryption. 10987 [Ben Laurie] 10988 10989 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder 10990 signed attributes when verifying signatures (this would break them), 10991 the detached data encoding was wrong and public keys obtained using 10992 X509_get_pubkey() weren't freed. 10993 [Steve Henson] 10994 10995 *) Add text documentation for the BUFFER functions. Also added a work around 10996 to a Win95 console bug. This was triggered by the password read stuff: the 10997 last character typed gets carried over to the next fread(). If you were 10998 generating a new cert request using 'req' for example then the last 10999 character of the passphrase would be CR which would then enter the first 11000 field as blank. 11001 [Steve Henson] 11002 11003 *) Added the new `Includes OpenSSL Cryptography Software' button as 11004 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay 11005 button and can be used by applications based on OpenSSL to show the 11006 relationship to the OpenSSL project. 11007 [Ralf S. Engelschall] 11008 11009 *) Remove confusing variables in function signatures in files 11010 ssl/ssl_lib.c and ssl/ssl.h. 11011 [Lennart Bong <lob@kulthea.stacken.kth.se>] 11012 11013 *) Don't install bss_file.c under PREFIX/include/ 11014 [Lennart Bong <lob@kulthea.stacken.kth.se>] 11015 11016 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle 11017 functions that return function pointers and has support for NT specific 11018 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various 11019 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from 11020 unsigned to signed types: this was killing the Win32 compile. 11021 [Steve Henson] 11022 11023 *) Add new certificate file to stack functions, 11024 SSL_add_dir_cert_subjects_to_stack() and 11025 SSL_add_file_cert_subjects_to_stack(). These largely supplant 11026 SSL_load_client_CA_file(), and can be used to add multiple certs easily 11027 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()). 11028 This means that Apache-SSL and similar packages don't have to mess around 11029 to add as many CAs as they want to the preferred list. 11030 [Ben Laurie] 11031 11032 *) Experiment with doxygen documentation. Currently only partially applied to 11033 ssl/ssl_lib.c. 11034 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with 11035 openssl.doxy as the configuration file. 11036 [Ben Laurie] 11037 11038 *) Get rid of remaining C++-style comments which strict C compilers hate. 11039 [Ralf S. Engelschall, pointed out by Carlos Amengual] 11040 11041 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not 11042 compiled in by default: it has problems with large keys. 11043 [Steve Henson] 11044 11045 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and 11046 DH private keys and/or callback functions which directly correspond to 11047 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This 11048 is needed for applications which have to configure certificates on a 11049 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis 11050 (e.g. s_server). 11051 For the RSA certificate situation is makes no difference, but 11052 for the DSA certificate situation this fixes the "no shared cipher" 11053 problem where the OpenSSL cipher selection procedure failed because the 11054 temporary keys were not overtaken from the context and the API provided 11055 no way to reconfigure them. 11056 The new functions now let applications reconfigure the stuff and they 11057 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh, 11058 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new 11059 non-public-API function ssl_cert_instantiate() is used as a helper 11060 function and also to reduce code redundancy inside ssl_rsa.c. 11061 [Ralf S. Engelschall] 11062 11063 *) Move s_server -dcert and -dkey options out of the undocumented feature 11064 area because they are useful for the DSA situation and should be 11065 recognized by the users. 11066 [Ralf S. Engelschall] 11067 11068 *) Fix the cipher decision scheme for export ciphers: the export bits are 11069 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within 11070 SSL_EXP_MASK. So, the original variable has to be used instead of the 11071 already masked variable. 11072 [Richard Levitte <levitte@stacken.kth.se>] 11073 11074 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c 11075 [Richard Levitte <levitte@stacken.kth.se>] 11076 11077 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal() 11078 from `int' to `unsigned int' because it's a length and initialized by 11079 EVP_DigestFinal() which expects an `unsigned int *'. 11080 [Richard Levitte <levitte@stacken.kth.se>] 11081 11082 *) Don't hard-code path to Perl interpreter on shebang line of Configure 11083 script. Instead use the usual Shell->Perl transition trick. 11084 [Ralf S. Engelschall] 11085 11086 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates 11087 (in addition to RSA certificates) to match the behaviour of `openssl dsa 11088 -noout -modulus' as it's already the case for `openssl rsa -noout 11089 -modulus'. For RSA the -modulus is the real "modulus" while for DSA 11090 currently the public key is printed (a decision which was already done by 11091 `openssl dsa -modulus' in the past) which serves a similar purpose. 11092 Additionally the NO_RSA no longer completely removes the whole -modulus 11093 option; it now only avoids using the RSA stuff. Same applies to NO_DSA 11094 now, too. 11095 [Ralf S. Engelschall] 11096 11097 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested 11098 BIO. See the source (crypto/evp/bio_ok.c) for more info. 11099 [Arne Ansper <arne@ats.cyber.ee>] 11100 11101 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs 11102 to be added. Now both 'req' and 'ca' can use new objects defined in the 11103 config file. 11104 [Steve Henson] 11105 11106 *) Add cool BIO that does syslog (or event log on NT). 11107 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie] 11108 11109 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5, 11110 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and 11111 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher 11112 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt. 11113 [Ben Laurie] 11114 11115 *) Add preliminary config info for new extension code. 11116 [Steve Henson] 11117 11118 *) Make RSA_NO_PADDING really use no padding. 11119 [Ulf Moeller <ulf@fitug.de>] 11120 11121 *) Generate errors when private/public key check is done. 11122 [Ben Laurie] 11123 11124 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support 11125 for some CRL extensions and new objects added. 11126 [Steve Henson] 11127 11128 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private 11129 key usage extension and fuller support for authority key id. 11130 [Steve Henson] 11131 11132 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved 11133 padding method for RSA, which is recommended for new applications in PKCS 11134 #1 v2.0 (RFC 2437, October 1998). 11135 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical 11136 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure 11137 against Bleichbacher's attack on RSA. 11138 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by 11139 Ben Laurie] 11140 11141 *) Updates to the new SSL compression code 11142 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 11143 11144 *) Fix so that the version number in the master secret, when passed 11145 via RSA, checks that if TLS was proposed, but we roll back to SSLv3 11146 (because the server will not accept higher), that the version number 11147 is 0x03,0x01, not 0x03,0x00 11148 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 11149 11150 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory 11151 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes 11152 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c 11153 [Steve Henson] 11154 11155 *) Support for RAW extensions where an arbitrary extension can be 11156 created by including its DER encoding. See apps/openssl.cnf for 11157 an example. 11158 [Steve Henson] 11159 11160 *) Make sure latest Perl versions don't interpret some generated C array 11161 code as Perl array code in the crypto/err/err_genc.pl script. 11162 [Lars Weber <3weber@informatik.uni-hamburg.de>] 11163 11164 *) Modify ms/do_ms.bat to not generate assembly language makefiles since 11165 not many people have the assembler. Various Win32 compilation fixes and 11166 update to the INSTALL.W32 file with (hopefully) more accurate Win32 11167 build instructions. 11168 [Steve Henson] 11169 11170 *) Modify configure script 'Configure' to automatically create crypto/date.h 11171 file under Win32 and also build pem.h from pem.org. New script 11172 util/mkfiles.pl to create the MINFO file on environments that can't do a 11173 'make files': perl util/mkfiles.pl >MINFO should work. 11174 [Steve Henson] 11175 11176 *) Major rework of DES function declarations, in the pursuit of correctness 11177 and purity. As a result, many evil casts evaporated, and some weirdness, 11178 too. You may find this causes warnings in your code. Zapping your evil 11179 casts will probably fix them. Mostly. 11180 [Ben Laurie] 11181 11182 *) Fix for a typo in asn1.h. Bug fix to object creation script 11183 obj_dat.pl. It considered a zero in an object definition to mean 11184 "end of object": none of the objects in objects.h have any zeros 11185 so it wasn't spotted. 11186 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>] 11187 11188 *) Add support for Triple DES Cipher Block Chaining with Output Feedback 11189 Masking (CBCM). In the absence of test vectors, the best I have been able 11190 to do is check that the decrypt undoes the encrypt, so far. Send me test 11191 vectors if you have them. 11192 [Ben Laurie] 11193 11194 *) Correct calculation of key length for export ciphers (too much space was 11195 allocated for null ciphers). This has not been tested! 11196 [Ben Laurie] 11197 11198 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage 11199 message is now correct (it understands "crypto" and "ssl" on its 11200 command line). There is also now an "update" option. This will update 11201 the util/ssleay.num and util/libeay.num files with any new functions. 11202 If you do a: 11203 perl util/mkdef.pl crypto ssl update 11204 it will update them. 11205 [Steve Henson] 11206 11207 *) Overhauled the Perl interface (perl/*): 11208 - ported BN stuff to OpenSSL's different BN library 11209 - made the perl/ source tree CVS-aware 11210 - renamed the package from SSLeay to OpenSSL (the files still contain 11211 their history because I've copied them in the repository) 11212 - removed obsolete files (the test scripts will be replaced 11213 by better Test::Harness variants in the future) 11214 [Ralf S. Engelschall] 11215 11216 *) First cut for a very conservative source tree cleanup: 11217 1. merge various obsolete readme texts into doc/ssleay.txt 11218 where we collect the old documents and readme texts. 11219 2. remove the first part of files where I'm already sure that we no 11220 longer need them because of three reasons: either they are just temporary 11221 files which were left by Eric or they are preserved original files where 11222 I've verified that the diff is also available in the CVS via "cvs diff 11223 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for 11224 the crypto/md/ stuff). 11225 [Ralf S. Engelschall] 11226 11227 *) More extension code. Incomplete support for subject and issuer alt 11228 name, issuer and authority key id. Change the i2v function parameters 11229 and add an extra 'crl' parameter in the X509V3_CTX structure: guess 11230 what that's for :-) Fix to ASN1 macro which messed up 11231 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED. 11232 [Steve Henson] 11233 11234 *) Preliminary support for ENUMERATED type. This is largely copied from the 11235 INTEGER code. 11236 [Steve Henson] 11237 11238 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy. 11239 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 11240 11241 *) Make sure `make rehash' target really finds the `openssl' program. 11242 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 11243 11244 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd 11245 like to hear about it if this slows down other processors. 11246 [Ben Laurie] 11247 11248 *) Add CygWin32 platform information to Configure script. 11249 [Alan Batie <batie@aahz.jf.intel.com>] 11250 11251 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm' 11252 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>] 11253 11254 *) New program nseq to manipulate netscape certificate sequences 11255 [Steve Henson] 11256 11257 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a 11258 few typos. 11259 [Steve Henson] 11260 11261 *) Fixes to BN code. Previously the default was to define BN_RECURSION 11262 but the BN code had some problems that would cause failures when 11263 doing certificate verification and some other functions. 11264 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 11265 11266 *) Add ASN1 and PEM code to support netscape certificate sequences. 11267 [Steve Henson] 11268 11269 *) Add ASN1 and PEM code to support netscape certificate sequences. 11270 [Steve Henson] 11271 11272 *) Add several PKIX and private extended key usage OIDs. 11273 [Steve Henson] 11274 11275 *) Modify the 'ca' program to handle the new extension code. Modify 11276 openssl.cnf for new extension format, add comments. 11277 [Steve Henson] 11278 11279 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req' 11280 and add a sample to openssl.cnf so req -x509 now adds appropriate 11281 CA extensions. 11282 [Steve Henson] 11283 11284 *) Continued X509 V3 changes. Add to other makefiles, integrate with the 11285 error code, add initial support to X509_print() and x509 application. 11286 [Steve Henson] 11287 11288 *) Takes a deep breath and start addding X509 V3 extension support code. Add 11289 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this 11290 stuff is currently isolated and isn't even compiled yet. 11291 [Steve Henson] 11292 11293 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL 11294 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print. 11295 Removed the versions check from X509 routines when loading extensions: 11296 this allows certain broken certificates that don't set the version 11297 properly to be processed. 11298 [Steve Henson] 11299 11300 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another 11301 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which 11302 can still be regenerated with "make depend". 11303 [Ben Laurie] 11304 11305 *) Spelling mistake in C version of CAST-128. 11306 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>] 11307 11308 *) Changes to the error generation code. The perl script err-code.pl 11309 now reads in the old error codes and retains the old numbers, only 11310 adding new ones if necessary. It also only changes the .err files if new 11311 codes are added. The makefiles have been modified to only insert errors 11312 when needed (to avoid needlessly modifying header files). This is done 11313 by only inserting errors if the .err file is newer than the auto generated 11314 C file. To rebuild all the error codes from scratch (the old behaviour) 11315 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl 11316 or delete all the .err files. 11317 [Steve Henson] 11318 11319 *) CAST-128 was incorrectly implemented for short keys. The C version has 11320 been fixed, but is untested. The assembler versions are also fixed, but 11321 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing 11322 to regenerate it if needed. 11323 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun 11324 Hagino <itojun@kame.net>] 11325 11326 *) File was opened incorrectly in randfile.c. 11327 [Ulf M��ller <ulf@fitug.de>] 11328 11329 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print 11330 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or 11331 GeneralizedTime. ASN1_TIME is the proper type used in certificates et 11332 al: it's just almost always a UTCTime. Note this patch adds new error 11333 codes so do a "make errors" if there are problems. 11334 [Steve Henson] 11335 11336 *) Correct Linux 1 recognition in config. 11337 [Ulf M��ller <ulf@fitug.de>] 11338 11339 *) Remove pointless MD5 hash when using DSA keys in ca. 11340 [Anonymous <nobody@replay.com>] 11341 11342 *) Generate an error if given an empty string as a cert directory. Also 11343 generate an error if handed NULL (previously returned 0 to indicate an 11344 error, but didn't set one). 11345 [Ben Laurie, reported by Anonymous <nobody@replay.com>] 11346 11347 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last. 11348 [Ben Laurie] 11349 11350 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct 11351 parameters. This was causing a warning which killed off the Win32 compile. 11352 [Steve Henson] 11353 11354 *) Remove C++ style comments from crypto/bn/bn_local.h. 11355 [Neil Costigan <neil.costigan@celocom.com>] 11356 11357 *) The function OBJ_txt2nid was broken. It was supposed to return a nid 11358 based on a text string, looking up short and long names and finally 11359 "dot" format. The "dot" format stuff didn't work. Added new function 11360 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote 11361 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the 11362 OID is not part of the table. 11363 [Steve Henson] 11364 11365 *) Add prototypes to X509 lookup/verify methods, fixing a bug in 11366 X509_LOOKUP_by_alias(). 11367 [Ben Laurie] 11368 11369 *) Sort openssl functions by name. 11370 [Ben Laurie] 11371 11372 *) Get the gendsa program working (hopefully) and add it to app list. Remove 11373 encryption from sample DSA keys (in case anyone is interested the password 11374 was "1234"). 11375 [Steve Henson] 11376 11377 *) Make _all_ *_free functions accept a NULL pointer. 11378 [Frans Heymans <fheymans@isaserver.be>] 11379 11380 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use 11381 NULL pointers. 11382 [Anonymous <nobody@replay.com>] 11383 11384 *) s_server should send the CAfile as acceptable CAs, not its own cert. 11385 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] 11386 11387 *) Don't blow it for numeric -newkey arguments to apps/req. 11388 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] 11389 11390 *) Temp key "for export" tests were wrong in s3_srvr.c. 11391 [Anonymous <nobody@replay.com>] 11392 11393 *) Add prototype for temp key callback functions 11394 SSL_CTX_set_tmp_{rsa,dh}_callback(). 11395 [Ben Laurie] 11396 11397 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and 11398 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey(). 11399 [Steve Henson] 11400 11401 *) X509_name_add_entry() freed the wrong thing after an error. 11402 [Arne Ansper <arne@ats.cyber.ee>] 11403 11404 *) rsa_eay.c would attempt to free a NULL context. 11405 [Arne Ansper <arne@ats.cyber.ee>] 11406 11407 *) BIO_s_socket() had a broken should_retry() on Windoze. 11408 [Arne Ansper <arne@ats.cyber.ee>] 11409 11410 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH. 11411 [Arne Ansper <arne@ats.cyber.ee>] 11412 11413 *) Make sure the already existing X509_STORE->depth variable is initialized 11414 in X509_STORE_new(), but document the fact that this variable is still 11415 unused in the certificate verification process. 11416 [Ralf S. Engelschall] 11417 11418 *) Fix the various library and apps files to free up pkeys obtained from 11419 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions. 11420 [Steve Henson] 11421 11422 *) Fix reference counting in X509_PUBKEY_get(). This makes 11423 demos/maurice/example2.c work, amongst others, probably. 11424 [Steve Henson and Ben Laurie] 11425 11426 *) First cut of a cleanup for apps/. First the `ssleay' program is now named 11427 `openssl' and second, the shortcut symlinks for the `openssl <command>' 11428 are no longer created. This way we have a single and consistent command 11429 line interface `openssl <command>', similar to `cvs <command>'. 11430 [Ralf S. Engelschall, Paul Sutton and Ben Laurie] 11431 11432 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey 11433 BIT STRING wrapper always have zero unused bits. 11434 [Steve Henson] 11435 11436 *) Add CA.pl, perl version of CA.sh, add extended key usage OID. 11437 [Steve Henson] 11438 11439 *) Make the top-level INSTALL documentation easier to understand. 11440 [Paul Sutton] 11441 11442 *) Makefiles updated to exit if an error occurs in a sub-directory 11443 make (including if user presses ^C) [Paul Sutton] 11444 11445 *) Make Montgomery context stuff explicit in RSA data structure. 11446 [Ben Laurie] 11447 11448 *) Fix build order of pem and err to allow for generated pem.h. 11449 [Ben Laurie] 11450 11451 *) Fix renumbering bug in X509_NAME_delete_entry(). 11452 [Ben Laurie] 11453 11454 *) Enhanced the err-ins.pl script so it makes the error library number 11455 global and can add a library name. This is needed for external ASN1 and 11456 other error libraries. 11457 [Steve Henson] 11458 11459 *) Fixed sk_insert which never worked properly. 11460 [Steve Henson] 11461 11462 *) Fix ASN1 macros so they can handle indefinite length construted 11463 EXPLICIT tags. Some non standard certificates use these: they can now 11464 be read in. 11465 [Steve Henson] 11466 11467 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc) 11468 into a single doc/ssleay.txt bundle. This way the information is still 11469 preserved but no longer messes up this directory. Now it's new room for 11470 the new set of documenation files. 11471 [Ralf S. Engelschall] 11472 11473 *) SETs were incorrectly DER encoded. This was a major pain, because they 11474 shared code with SEQUENCEs, which aren't coded the same. This means that 11475 almost everything to do with SETs or SEQUENCEs has either changed name or 11476 number of arguments. 11477 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>] 11478 11479 *) Fix test data to work with the above. 11480 [Ben Laurie] 11481 11482 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but 11483 was already fixed by Eric for 0.9.1 it seems. 11484 [Ben Laurie - pointed out by Ulf M��ller <ulf@fitug.de>] 11485 11486 *) Autodetect FreeBSD3. 11487 [Ben Laurie] 11488 11489 *) Fix various bugs in Configure. This affects the following platforms: 11490 nextstep 11491 ncr-scde 11492 unixware-2.0 11493 unixware-2.0-pentium 11494 sco5-cc. 11495 [Ben Laurie] 11496 11497 *) Eliminate generated files from CVS. Reorder tests to regenerate files 11498 before they are needed. 11499 [Ben Laurie] 11500 11501 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy). 11502 [Ben Laurie] 11503 11504 11505 Changes between 0.9.1b and 0.9.1c [23-Dec-1998] 11506 11507 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and 11508 changed SSLeay to OpenSSL in version strings. 11509 [Ralf S. Engelschall] 11510 11511 *) Some fixups to the top-level documents. 11512 [Paul Sutton] 11513 11514 *) Fixed the nasty bug where rsaref.h was not found under compile-time 11515 because the symlink to include/ was missing. 11516 [Ralf S. Engelschall] 11517 11518 *) Incorporated the popular no-RSA/DSA-only patches 11519 which allow to compile a RSA-free SSLeay. 11520 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall] 11521 11522 *) Fixed nasty rehash problem under `make -f Makefile.ssl links' 11523 when "ssleay" is still not found. 11524 [Ralf S. Engelschall] 11525 11526 *) Added more platforms to Configure: Cray T3E, HPUX 11, 11527 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>] 11528 11529 *) Updated the README file. 11530 [Ralf S. Engelschall] 11531 11532 *) Added various .cvsignore files in the CVS repository subdirs 11533 to make a "cvs update" really silent. 11534 [Ralf S. Engelschall] 11535 11536 *) Recompiled the error-definition header files and added 11537 missing symbols to the Win32 linker tables. 11538 [Ralf S. Engelschall] 11539 11540 *) Cleaned up the top-level documents; 11541 o new files: CHANGES and LICENSE 11542 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay 11543 o merged COPYRIGHT into LICENSE 11544 o removed obsolete TODO file 11545 o renamed MICROSOFT to INSTALL.W32 11546 [Ralf S. Engelschall] 11547 11548 *) Removed dummy files from the 0.9.1b source tree: 11549 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi 11550 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f 11551 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f 11552 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f 11553 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f 11554 [Ralf S. Engelschall] 11555 11556 *) Added various platform portability fixes. 11557 [Mark J. Cox] 11558 11559 *) The Genesis of the OpenSSL rpject: 11560 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A. 11561 Young and Tim J. Hudson created while they were working for C2Net until 11562 summer 1998. 11563 [The OpenSSL Project] 11564 11565 11566 Changes between 0.9.0b and 0.9.1b [not released] 11567 11568 *) Updated a few CA certificates under certs/ 11569 [Eric A. Young] 11570 11571 *) Changed some BIGNUM api stuff. 11572 [Eric A. Young] 11573 11574 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD, 11575 DGUX x86, Linux Alpha, etc. 11576 [Eric A. Young] 11577 11578 *) New COMP library [crypto/comp/] for SSL Record Layer Compression: 11579 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is 11580 available). 11581 [Eric A. Young] 11582 11583 *) Add -strparse option to asn1pars program which parses nested 11584 binary structures 11585 [Dr Stephen Henson <shenson@bigfoot.com>] 11586 11587 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs. 11588 [Eric A. Young] 11589 11590 *) DSA fix for "ca" program. 11591 [Eric A. Young] 11592 11593 *) Added "-genkey" option to "dsaparam" program. 11594 [Eric A. Young] 11595 11596 *) Added RIPE MD160 (rmd160) message digest. 11597 [Eric A. Young] 11598 11599 *) Added -a (all) option to "ssleay version" command. 11600 [Eric A. Young] 11601 11602 *) Added PLATFORM define which is the id given to Configure. 11603 [Eric A. Young] 11604 11605 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking. 11606 [Eric A. Young] 11607 11608 *) Extended the ASN.1 parser routines. 11609 [Eric A. Young] 11610 11611 *) Extended BIO routines to support REUSEADDR, seek, tell, etc. 11612 [Eric A. Young] 11613 11614 *) Added a BN_CTX to the BN library. 11615 [Eric A. Young] 11616 11617 *) Fixed the weak key values in DES library 11618 [Eric A. Young] 11619 11620 *) Changed API in EVP library for cipher aliases. 11621 [Eric A. Young] 11622 11623 *) Added support for RC2/64bit cipher. 11624 [Eric A. Young] 11625 11626 *) Converted the lhash library to the crypto/mem.c functions. 11627 [Eric A. Young] 11628 11629 *) Added more recognized ASN.1 object ids. 11630 [Eric A. Young] 11631 11632 *) Added more RSA padding checks for SSL/TLS. 11633 [Eric A. Young] 11634 11635 *) Added BIO proxy/filter functionality. 11636 [Eric A. Young] 11637 11638 *) Added extra_certs to SSL_CTX which can be used 11639 send extra CA certificates to the client in the CA cert chain sending 11640 process. It can be configured with SSL_CTX_add_extra_chain_cert(). 11641 [Eric A. Young] 11642 11643 *) Now Fortezza is denied in the authentication phase because 11644 this is key exchange mechanism is not supported by SSLeay at all. 11645 [Eric A. Young] 11646 11647 *) Additional PKCS1 checks. 11648 [Eric A. Young] 11649 11650 *) Support the string "TLSv1" for all TLS v1 ciphers. 11651 [Eric A. Young] 11652 11653 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the 11654 ex_data index of the SSL context in the X509_STORE_CTX ex_data. 11655 [Eric A. Young] 11656 11657 *) Fixed a few memory leaks. 11658 [Eric A. Young] 11659 11660 *) Fixed various code and comment typos. 11661 [Eric A. Young] 11662 11663 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0 11664 bytes sent in the client random. 11665 [Edward Bishop <ebishop@spyglass.com>] 11666 11667