CHANGES revision 302408
1 2 OpenSSL CHANGES 3 _______________ 4 5 Changes between 1.0.2g and 1.0.2h [3 May 2016] 6 7 *) Prevent padding oracle in AES-NI CBC MAC check 8 9 A MITM attacker can use a padding oracle attack to decrypt traffic 10 when the connection uses an AES CBC cipher and the server support 11 AES-NI. 12 13 This issue was introduced as part of the fix for Lucky 13 padding 14 attack (CVE-2013-0169). The padding check was rewritten to be in 15 constant time by making sure that always the same bytes are read and 16 compared against either the MAC or padding bytes. But it no longer 17 checked that there was enough data to have both the MAC and padding 18 bytes. 19 20 This issue was reported by Juraj Somorovsky using TLS-Attacker. 21 (CVE-2016-2107) 22 [Kurt Roeckx] 23 24 *) Fix EVP_EncodeUpdate overflow 25 26 An overflow can occur in the EVP_EncodeUpdate() function which is used for 27 Base64 encoding of binary data. If an attacker is able to supply very large 28 amounts of input data then a length check can overflow resulting in a heap 29 corruption. 30 31 Internally to OpenSSL the EVP_EncodeUpdate() function is primarly used by 32 the PEM_write_bio* family of functions. These are mainly used within the 33 OpenSSL command line applications, so any application which processes data 34 from an untrusted source and outputs it as a PEM file should be considered 35 vulnerable to this issue. User applications that call these APIs directly 36 with large amounts of untrusted data may also be vulnerable. 37 38 This issue was reported by Guido Vranken. 39 (CVE-2016-2105) 40 [Matt Caswell] 41 42 *) Fix EVP_EncryptUpdate overflow 43 44 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker 45 is able to supply very large amounts of input data after a previous call to 46 EVP_EncryptUpdate() with a partial block then a length check can overflow 47 resulting in a heap corruption. Following an analysis of all OpenSSL 48 internal usage of the EVP_EncryptUpdate() function all usage is one of two 49 forms. The first form is where the EVP_EncryptUpdate() call is known to be 50 the first called function after an EVP_EncryptInit(), and therefore that 51 specific call must be safe. The second form is where the length passed to 52 EVP_EncryptUpdate() can be seen from the code to be some small value and 53 therefore there is no possibility of an overflow. Since all instances are 54 one of these two forms, it is believed that there can be no overflows in 55 internal code due to this problem. It should be noted that 56 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths. 57 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances 58 of these calls have also been analysed too and it is believed there are no 59 instances in internal usage where an overflow could occur. 60 61 This issue was reported by Guido Vranken. 62 (CVE-2016-2106) 63 [Matt Caswell] 64 65 *) Prevent ASN.1 BIO excessive memory allocation 66 67 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio() 68 a short invalid encoding can casuse allocation of large amounts of memory 69 potentially consuming excessive resources or exhausting memory. 70 71 Any application parsing untrusted data through d2i BIO functions is 72 affected. The memory based functions such as d2i_X509() are *not* affected. 73 Since the memory based functions are used by the TLS library, TLS 74 applications are not affected. 75 76 This issue was reported by Brian Carpenter. 77 (CVE-2016-2109) 78 [Stephen Henson] 79 80 *) EBCDIC overread 81 82 ASN1 Strings that are over 1024 bytes can cause an overread in applications 83 using the X509_NAME_oneline() function on EBCDIC systems. This could result 84 in arbitrary stack data being returned in the buffer. 85 86 This issue was reported by Guido Vranken. 87 (CVE-2016-2176) 88 [Matt Caswell] 89 90 *) Modify behavior of ALPN to invoke callback after SNI/servername 91 callback, such that updates to the SSL_CTX affect ALPN. 92 [Todd Short] 93 94 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the 95 default. 96 [Kurt Roeckx] 97 98 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the 99 methods are enabled and ssl2 is disabled the methods return NULL. 100 [Kurt Roeckx] 101 102 Changes between 1.0.2f and 1.0.2g [1 Mar 2016] 103 104 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL. 105 Builds that are not configured with "enable-weak-ssl-ciphers" will not 106 provide any "EXPORT" or "LOW" strength ciphers. 107 [Viktor Dukhovni] 108 109 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2 110 is by default disabled at build-time. Builds that are not configured with 111 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used, 112 users who want to negotiate SSLv2 via the version-flexible SSLv23_method() 113 will need to explicitly call either of: 114 115 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2); 116 or 117 SSL_clear_options(ssl, SSL_OP_NO_SSLv2); 118 119 as appropriate. Even if either of those is used, or the application 120 explicitly uses the version-specific SSLv2_method() or its client and 121 server variants, SSLv2 ciphers vulnerable to exhaustive search key 122 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT 123 ciphers, and SSLv2 56-bit DES are no longer available. 124 (CVE-2016-0800) 125 [Viktor Dukhovni] 126 127 *) Fix a double-free in DSA code 128 129 A double free bug was discovered when OpenSSL parses malformed DSA private 130 keys and could lead to a DoS attack or memory corruption for applications 131 that receive DSA private keys from untrusted sources. This scenario is 132 considered rare. 133 134 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using 135 libFuzzer. 136 (CVE-2016-0705) 137 [Stephen Henson] 138 139 *) Disable SRP fake user seed to address a server memory leak. 140 141 Add a new method SRP_VBASE_get1_by_user that handles the seed properly. 142 143 SRP_VBASE_get_by_user had inconsistent memory management behaviour. 144 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user 145 was changed to ignore the "fake user" SRP seed, even if the seed 146 is configured. 147 148 Users should use SRP_VBASE_get1_by_user instead. Note that in 149 SRP_VBASE_get1_by_user, caller must free the returned value. Note 150 also that even though configuring the SRP seed attempts to hide 151 invalid usernames by continuing the handshake with fake 152 credentials, this behaviour is not constant time and no strong 153 guarantees are made that the handshake is indistinguishable from 154 that of a valid user. 155 (CVE-2016-0798) 156 [Emilia K��sper] 157 158 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption 159 160 In the BN_hex2bn function the number of hex digits is calculated using an 161 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For 162 large values of |i| this can result in |bn_expand| not allocating any 163 memory because |i * 4| is negative. This can leave the internal BIGNUM data 164 field as NULL leading to a subsequent NULL ptr deref. For very large values 165 of |i|, the calculation |i * 4| could be a positive value smaller than |i|. 166 In this case memory is allocated to the internal BIGNUM data field, but it 167 is insufficiently sized leading to heap corruption. A similar issue exists 168 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn 169 is ever called by user applications with very large untrusted hex/dec data. 170 This is anticipated to be a rare occurrence. 171 172 All OpenSSL internal usage of these functions use data that is not expected 173 to be untrusted, e.g. config file data or application command line 174 arguments. If user developed applications generate config file data based 175 on untrusted data then it is possible that this could also lead to security 176 consequences. This is also anticipated to be rare. 177 178 This issue was reported to OpenSSL by Guido Vranken. 179 (CVE-2016-0797) 180 [Matt Caswell] 181 182 *) Fix memory issues in BIO_*printf functions 183 184 The internal |fmtstr| function used in processing a "%s" format string in 185 the BIO_*printf functions could overflow while calculating the length of a 186 string and cause an OOB read when printing very long strings. 187 188 Additionally the internal |doapr_outch| function can attempt to write to an 189 OOB memory location (at an offset from the NULL pointer) in the event of a 190 memory allocation failure. In 1.0.2 and below this could be caused where 191 the size of a buffer to be allocated is greater than INT_MAX. E.g. this 192 could be in processing a very long "%s" format string. Memory leaks can 193 also occur. 194 195 The first issue may mask the second issue dependent on compiler behaviour. 196 These problems could enable attacks where large amounts of untrusted data 197 is passed to the BIO_*printf functions. If applications use these functions 198 in this way then they could be vulnerable. OpenSSL itself uses these 199 functions when printing out human-readable dumps of ASN.1 data. Therefore 200 applications that print this data could be vulnerable if the data is from 201 untrusted sources. OpenSSL command line applications could also be 202 vulnerable where they print out ASN.1 data, or if untrusted data is passed 203 as command line arguments. 204 205 Libssl is not considered directly vulnerable. Additionally certificates etc 206 received via remote connections via libssl are also unlikely to be able to 207 trigger these issues because of message size limits enforced within libssl. 208 209 This issue was reported to OpenSSL Guido Vranken. 210 (CVE-2016-0799) 211 [Matt Caswell] 212 213 *) Side channel attack on modular exponentiation 214 215 A side-channel attack was found which makes use of cache-bank conflicts on 216 the Intel Sandy-Bridge microarchitecture which could lead to the recovery 217 of RSA keys. The ability to exploit this issue is limited as it relies on 218 an attacker who has control of code in a thread running on the same 219 hyper-threaded core as the victim thread which is performing decryptions. 220 221 This issue was reported to OpenSSL by Yuval Yarom, The University of 222 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and 223 Nadia Heninger, University of Pennsylvania with more information at 224 http://cachebleed.info. 225 (CVE-2016-0702) 226 [Andy Polyakov] 227 228 *) Change the req app to generate a 2048-bit RSA/DSA key by default, 229 if no keysize is specified with default_bits. This fixes an 230 omission in an earlier change that changed all RSA/DSA key generation 231 apps to use 2048 bits by default. 232 [Emilia K��sper] 233 234 Changes between 1.0.2e and 1.0.2f [28 Jan 2016] 235 236 *) DH small subgroups 237 238 Historically OpenSSL only ever generated DH parameters based on "safe" 239 primes. More recently (in version 1.0.2) support was provided for 240 generating X9.42 style parameter files such as those required for RFC 5114 241 support. The primes used in such files may not be "safe". Where an 242 application is using DH configured with parameters based on primes that are 243 not "safe" then an attacker could use this fact to find a peer's private 244 DH exponent. This attack requires that the attacker complete multiple 245 handshakes in which the peer uses the same private DH exponent. For example 246 this could be used to discover a TLS server's private DH exponent if it's 247 reusing the private DH exponent or it's using a static DH ciphersuite. 248 249 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in 250 TLS. It is not on by default. If the option is not set then the server 251 reuses the same private DH exponent for the life of the server process and 252 would be vulnerable to this attack. It is believed that many popular 253 applications do set this option and would therefore not be at risk. 254 255 The fix for this issue adds an additional check where a "q" parameter is 256 available (as is the case in X9.42 based parameters). This detects the 257 only known attack, and is the only possible defense for static DH 258 ciphersuites. This could have some performance impact. 259 260 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by 261 default and cannot be disabled. This could have some performance impact. 262 263 This issue was reported to OpenSSL by Antonio Sanso (Adobe). 264 (CVE-2016-0701) 265 [Matt Caswell] 266 267 *) SSLv2 doesn't block disabled ciphers 268 269 A malicious client can negotiate SSLv2 ciphers that have been disabled on 270 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have 271 been disabled, provided that the SSLv2 protocol was not also disabled via 272 SSL_OP_NO_SSLv2. 273 274 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram 275 and Sebastian Schinzel. 276 (CVE-2015-3197) 277 [Viktor Dukhovni] 278 279 *) Reject DH handshakes with parameters shorter than 1024 bits. 280 [Kurt Roeckx] 281 282 Changes between 1.0.2d and 1.0.2e [3 Dec 2015] 283 284 *) BN_mod_exp may produce incorrect results on x86_64 285 286 There is a carry propagating bug in the x86_64 Montgomery squaring 287 procedure. No EC algorithms are affected. Analysis suggests that attacks 288 against RSA and DSA as a result of this defect would be very difficult to 289 perform and are not believed likely. Attacks against DH are considered just 290 feasible (although very difficult) because most of the work necessary to 291 deduce information about a private key may be performed offline. The amount 292 of resources required for such an attack would be very significant and 293 likely only accessible to a limited number of attackers. An attacker would 294 additionally need online access to an unpatched system using the target 295 private key in a scenario with persistent DH parameters and a private 296 key that is shared between multiple clients. For example this can occur by 297 default in OpenSSL DHE based SSL/TLS ciphersuites. 298 299 This issue was reported to OpenSSL by Hanno B��ck. 300 (CVE-2015-3193) 301 [Andy Polyakov] 302 303 *) Certificate verify crash with missing PSS parameter 304 305 The signature verification routines will crash with a NULL pointer 306 dereference if presented with an ASN.1 signature using the RSA PSS 307 algorithm and absent mask generation function parameter. Since these 308 routines are used to verify certificate signature algorithms this can be 309 used to crash any certificate verification operation and exploited in a 310 DoS attack. Any application which performs certificate verification is 311 vulnerable including OpenSSL clients and servers which enable client 312 authentication. 313 314 This issue was reported to OpenSSL by Lo��c Jonas Etienne (Qnective AG). 315 (CVE-2015-3194) 316 [Stephen Henson] 317 318 *) X509_ATTRIBUTE memory leak 319 320 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak 321 memory. This structure is used by the PKCS#7 and CMS routines so any 322 application which reads PKCS#7 or CMS data from untrusted sources is 323 affected. SSL/TLS is not affected. 324 325 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using 326 libFuzzer. 327 (CVE-2015-3195) 328 [Stephen Henson] 329 330 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs. 331 This changes the decoding behaviour for some invalid messages, 332 though the change is mostly in the more lenient direction, and 333 legacy behaviour is preserved as much as possible. 334 [Emilia K��sper] 335 336 *) In DSA_generate_parameters_ex, if the provided seed is too short, 337 use a random seed, as already documented. 338 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>] 339 340 Changes between 1.0.2c and 1.0.2d [9 Jul 2015] 341 342 *) Alternate chains certificate forgery 343 344 During certificate verfification, OpenSSL will attempt to find an 345 alternative certificate chain if the first attempt to build such a chain 346 fails. An error in the implementation of this logic can mean that an 347 attacker could cause certain checks on untrusted certificates to be 348 bypassed, such as the CA flag, enabling them to use a valid leaf 349 certificate to act as a CA and "issue" an invalid certificate. 350 351 This issue was reported to OpenSSL by Adam Langley/David Benjamin 352 (Google/BoringSSL). 353 (CVE-2015-1793) 354 [Matt Caswell] 355 356 *) Race condition handling PSK identify hint 357 358 If PSK identity hints are received by a multi-threaded client then 359 the values are wrongly updated in the parent SSL_CTX structure. This can 360 result in a race condition potentially leading to a double free of the 361 identify hint data. 362 (CVE-2015-3196) 363 [Stephen Henson] 364 365 Changes between 1.0.2b and 1.0.2c [12 Jun 2015] 366 367 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI 368 incompatibility in the handling of HMAC. The previous ABI has now been 369 restored. 370 371 Changes between 1.0.2a and 1.0.2b [11 Jun 2015] 372 373 *) Malformed ECParameters causes infinite loop 374 375 When processing an ECParameters structure OpenSSL enters an infinite loop 376 if the curve specified is over a specially malformed binary polynomial 377 field. 378 379 This can be used to perform denial of service against any 380 system which processes public keys, certificate requests or 381 certificates. This includes TLS clients and TLS servers with 382 client authentication enabled. 383 384 This issue was reported to OpenSSL by Joseph Barr-Pixton. 385 (CVE-2015-1788) 386 [Andy Polyakov] 387 388 *) Exploitable out-of-bounds read in X509_cmp_time 389 390 X509_cmp_time does not properly check the length of the ASN1_TIME 391 string and can read a few bytes out of bounds. In addition, 392 X509_cmp_time accepts an arbitrary number of fractional seconds in the 393 time string. 394 395 An attacker can use this to craft malformed certificates and CRLs of 396 various sizes and potentially cause a segmentation fault, resulting in 397 a DoS on applications that verify certificates or CRLs. TLS clients 398 that verify CRLs are affected. TLS clients and servers with client 399 authentication enabled may be affected if they use custom verification 400 callbacks. 401 402 This issue was reported to OpenSSL by Robert Swiecki (Google), and 403 independently by Hanno B��ck. 404 (CVE-2015-1789) 405 [Emilia K��sper] 406 407 *) PKCS7 crash with missing EnvelopedContent 408 409 The PKCS#7 parsing code does not handle missing inner EncryptedContent 410 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs 411 with missing content and trigger a NULL pointer dereference on parsing. 412 413 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7 414 structures from untrusted sources are affected. OpenSSL clients and 415 servers are not affected. 416 417 This issue was reported to OpenSSL by Michal Zalewski (Google). 418 (CVE-2015-1790) 419 [Emilia K��sper] 420 421 *) CMS verify infinite loop with unknown hash function 422 423 When verifying a signedData message the CMS code can enter an infinite loop 424 if presented with an unknown hash function OID. This can be used to perform 425 denial of service against any system which verifies signedData messages using 426 the CMS code. 427 This issue was reported to OpenSSL by Johannes Bauer. 428 (CVE-2015-1792) 429 [Stephen Henson] 430 431 *) Race condition handling NewSessionTicket 432 433 If a NewSessionTicket is received by a multi-threaded client when attempting to 434 reuse a previous ticket then a race condition can occur potentially leading to 435 a double free of the ticket data. 436 (CVE-2015-1791) 437 [Matt Caswell] 438 439 *) Removed support for the two export grade static DH ciphersuites 440 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites 441 were newly added (along with a number of other static DH ciphersuites) to 442 1.0.2. However the two export ones have *never* worked since they were 443 introduced. It seems strange in any case to be adding new export 444 ciphersuites, and given "logjam" it also does not seem correct to fix them. 445 [Matt Caswell] 446 447 *) Only support 256-bit or stronger elliptic curves with the 448 'ecdh_auto' setting (server) or by default (client). Of supported 449 curves, prefer P-256 (both). 450 [Emilia Kasper] 451 452 *) Reject DH handshakes with parameters shorter than 768 bits. 453 [Kurt Roeckx and Emilia Kasper] 454 455 Changes between 1.0.2 and 1.0.2a [19 Mar 2015] 456 457 *) ClientHello sigalgs DoS fix 458 459 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an 460 invalid signature algorithms extension a NULL pointer dereference will 461 occur. This can be exploited in a DoS attack against the server. 462 463 This issue was was reported to OpenSSL by David Ramos of Stanford 464 University. 465 (CVE-2015-0291) 466 [Stephen Henson and Matt Caswell] 467 468 *) Multiblock corrupted pointer fix 469 470 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This 471 feature only applies on 64 bit x86 architecture platforms that support AES 472 NI instructions. A defect in the implementation of "multiblock" can cause 473 OpenSSL's internal write buffer to become incorrectly set to NULL when 474 using non-blocking IO. Typically, when the user application is using a 475 socket BIO for writing, this will only result in a failed connection. 476 However if some other BIO is used then it is likely that a segmentation 477 fault will be triggered, thus enabling a potential DoS attack. 478 479 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller. 480 (CVE-2015-0290) 481 [Matt Caswell] 482 483 *) Segmentation fault in DTLSv1_listen fix 484 485 The DTLSv1_listen function is intended to be stateless and processes the 486 initial ClientHello from many peers. It is common for user code to loop 487 over the call to DTLSv1_listen until a valid ClientHello is received with 488 an associated cookie. A defect in the implementation of DTLSv1_listen means 489 that state is preserved in the SSL object from one invocation to the next 490 that can lead to a segmentation fault. Errors processing the initial 491 ClientHello can trigger this scenario. An example of such an error could be 492 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only 493 server. 494 495 This issue was reported to OpenSSL by Per Allansson. 496 (CVE-2015-0207) 497 [Matt Caswell] 498 499 *) Segmentation fault in ASN1_TYPE_cmp fix 500 501 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is 502 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check 503 certificate signature algorithm consistency this can be used to crash any 504 certificate verification operation and exploited in a DoS attack. Any 505 application which performs certificate verification is vulnerable including 506 OpenSSL clients and servers which enable client authentication. 507 (CVE-2015-0286) 508 [Stephen Henson] 509 510 *) Segmentation fault for invalid PSS parameters fix 511 512 The signature verification routines will crash with a NULL pointer 513 dereference if presented with an ASN.1 signature using the RSA PSS 514 algorithm and invalid parameters. Since these routines are used to verify 515 certificate signature algorithms this can be used to crash any 516 certificate verification operation and exploited in a DoS attack. Any 517 application which performs certificate verification is vulnerable including 518 OpenSSL clients and servers which enable client authentication. 519 520 This issue was was reported to OpenSSL by Brian Carpenter. 521 (CVE-2015-0208) 522 [Stephen Henson] 523 524 *) ASN.1 structure reuse memory corruption fix 525 526 Reusing a structure in ASN.1 parsing may allow an attacker to cause 527 memory corruption via an invalid write. Such reuse is and has been 528 strongly discouraged and is believed to be rare. 529 530 Applications that parse structures containing CHOICE or ANY DEFINED BY 531 components may be affected. Certificate parsing (d2i_X509 and related 532 functions) are however not affected. OpenSSL clients and servers are 533 not affected. 534 (CVE-2015-0287) 535 [Stephen Henson] 536 537 *) PKCS7 NULL pointer dereferences fix 538 539 The PKCS#7 parsing code does not handle missing outer ContentInfo 540 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with 541 missing content and trigger a NULL pointer dereference on parsing. 542 543 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or 544 otherwise parse PKCS#7 structures from untrusted sources are 545 affected. OpenSSL clients and servers are not affected. 546 547 This issue was reported to OpenSSL by Michal Zalewski (Google). 548 (CVE-2015-0289) 549 [Emilia K��sper] 550 551 *) DoS via reachable assert in SSLv2 servers fix 552 553 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in 554 servers that both support SSLv2 and enable export cipher suites by sending 555 a specially crafted SSLv2 CLIENT-MASTER-KEY message. 556 557 This issue was discovered by Sean Burford (Google) and Emilia K��sper 558 (OpenSSL development team). 559 (CVE-2015-0293) 560 [Emilia K��sper] 561 562 *) Empty CKE with client auth and DHE fix 563 564 If client auth is used then a server can seg fault in the event of a DHE 565 ciphersuite being selected and a zero length ClientKeyExchange message 566 being sent by the client. This could be exploited in a DoS attack. 567 (CVE-2015-1787) 568 [Matt Caswell] 569 570 *) Handshake with unseeded PRNG fix 571 572 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake 573 with an unseeded PRNG. The conditions are: 574 - The client is on a platform where the PRNG has not been seeded 575 automatically, and the user has not seeded manually 576 - A protocol specific client method version has been used (i.e. not 577 SSL_client_methodv23) 578 - A ciphersuite is used that does not require additional random data from 579 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA). 580 581 If the handshake succeeds then the client random that has been used will 582 have been generated from a PRNG with insufficient entropy and therefore the 583 output may be predictable. 584 585 For example using the following command with an unseeded openssl will 586 succeed on an unpatched platform: 587 588 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA 589 (CVE-2015-0285) 590 [Matt Caswell] 591 592 *) Use After Free following d2i_ECPrivatekey error fix 593 594 A malformed EC private key file consumed via the d2i_ECPrivateKey function 595 could cause a use after free condition. This, in turn, could cause a double 596 free in several private key parsing functions (such as d2i_PrivateKey 597 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption 598 for applications that receive EC private keys from untrusted 599 sources. This scenario is considered rare. 600 601 This issue was discovered by the BoringSSL project and fixed in their 602 commit 517073cd4b. 603 (CVE-2015-0209) 604 [Matt Caswell] 605 606 *) X509_to_X509_REQ NULL pointer deref fix 607 608 The function X509_to_X509_REQ will crash with a NULL pointer dereference if 609 the certificate key is invalid. This function is rarely used in practice. 610 611 This issue was discovered by Brian Carpenter. 612 (CVE-2015-0288) 613 [Stephen Henson] 614 615 *) Removed the export ciphers from the DEFAULT ciphers 616 [Kurt Roeckx] 617 618 Changes between 1.0.1l and 1.0.2 [22 Jan 2015] 619 620 *) Change RSA and DH/DSA key generation apps to generate 2048-bit 621 keys by default. 622 [Kurt Roeckx] 623 624 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g. 625 ARMv5 through ARMv8, as opposite to "locking" it to single one. 626 So far those who have to target multiple plaforms would compromise 627 and argue that binary targeting say ARMv5 would still execute on 628 ARMv8. "Universal" build resolves this compromise by providing 629 near-optimal performance even on newer platforms. 630 [Andy Polyakov] 631 632 *) Accelerated NIST P-256 elliptic curve implementation for x86_64 633 (other platforms pending). 634 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov] 635 636 *) Add support for the SignedCertificateTimestampList certificate and 637 OCSP response extensions from RFC6962. 638 [Rob Stradling] 639 640 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) 641 for corner cases. (Certain input points at infinity could lead to 642 bogus results, with non-infinity inputs mapped to infinity too.) 643 [Bodo Moeller] 644 645 *) Initial support for PowerISA 2.0.7, first implemented in POWER8. 646 This covers AES, SHA256/512 and GHASH. "Initial" means that most 647 common cases are optimized and there still is room for further 648 improvements. Vector Permutation AES for Altivec is also added. 649 [Andy Polyakov] 650 651 *) Add support for little-endian ppc64 Linux target. 652 [Marcelo Cerri (IBM)] 653 654 *) Initial support for AMRv8 ISA crypto extensions. This covers AES, 655 SHA1, SHA256 and GHASH. "Initial" means that most common cases 656 are optimized and there still is room for further improvements. 657 Both 32- and 64-bit modes are supported. 658 [Andy Polyakov, Ard Biesheuvel (Linaro)] 659 660 *) Improved ARMv7 NEON support. 661 [Andy Polyakov] 662 663 *) Support for SPARC Architecture 2011 crypto extensions, first 664 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1, 665 SHA256/512, MD5, GHASH and modular exponentiation. 666 [Andy Polyakov, David Miller] 667 668 *) Accelerated modular exponentiation for Intel processors, a.k.a. 669 RSAZ. 670 [Shay Gueron & Vlad Krasnov (Intel Corp)] 671 672 *) Support for new and upcoming Intel processors, including AVX2, 673 BMI and SHA ISA extensions. This includes additional "stitched" 674 implementations, AESNI-SHA256 and GCM, and multi-buffer support 675 for TLS encrypt. 676 677 This work was sponsored by Intel Corp. 678 [Andy Polyakov] 679 680 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method() 681 supports both DTLS 1.2 and 1.0 and should use whatever version the peer 682 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only. 683 [Steve Henson] 684 685 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file(): 686 this fixes a limiation in previous versions of OpenSSL. 687 [Steve Henson] 688 689 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest, 690 MGF1 digest and OAEP label. 691 [Steve Henson] 692 693 *) Add EVP support for key wrapping algorithms, to avoid problems with 694 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in 695 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap 696 algorithms and include tests cases. 697 [Steve Henson] 698 699 *) Add functions to allocate and set the fields of an ECDSA_METHOD 700 structure. 701 [Douglas E. Engert, Steve Henson] 702 703 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the 704 difference in days and seconds between two tm or ASN1_TIME structures. 705 [Steve Henson] 706 707 *) Add -rev test option to s_server to just reverse order of characters 708 received by client and send back to server. Also prints an abbreviated 709 summary of the connection parameters. 710 [Steve Henson] 711 712 *) New option -brief for s_client and s_server to print out a brief summary 713 of connection parameters. 714 [Steve Henson] 715 716 *) Add callbacks for arbitrary TLS extensions. 717 [Trevor Perrin <trevp@trevp.net> and Ben Laurie] 718 719 *) New option -crl_download in several openssl utilities to download CRLs 720 from CRLDP extension in certificates. 721 [Steve Henson] 722 723 *) New options -CRL and -CRLform for s_client and s_server for CRLs. 724 [Steve Henson] 725 726 *) New function X509_CRL_diff to generate a delta CRL from the difference 727 of two full CRLs. Add support to "crl" utility. 728 [Steve Henson] 729 730 *) New functions to set lookup_crls function and to retrieve 731 X509_STORE from X509_STORE_CTX. 732 [Steve Henson] 733 734 *) Print out deprecated issuer and subject unique ID fields in 735 certificates. 736 [Steve Henson] 737 738 *) Extend OCSP I/O functions so they can be used for simple general purpose 739 HTTP as well as OCSP. New wrapper function which can be used to download 740 CRLs using the OCSP API. 741 [Steve Henson] 742 743 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs. 744 [Steve Henson] 745 746 *) SSL_CONF* functions. These provide a common framework for application 747 configuration using configuration files or command lines. 748 [Steve Henson] 749 750 *) SSL/TLS tracing code. This parses out SSL/TLS records using the 751 message callback and prints the results. Needs compile time option 752 "enable-ssl-trace". New options to s_client and s_server to enable 753 tracing. 754 [Steve Henson] 755 756 *) New ctrl and macro to retrieve supported points extensions. 757 Print out extension in s_server and s_client. 758 [Steve Henson] 759 760 *) New functions to retrieve certificate signature and signature 761 OID NID. 762 [Steve Henson] 763 764 *) Add functions to retrieve and manipulate the raw cipherlist sent by a 765 client to OpenSSL. 766 [Steve Henson] 767 768 *) New Suite B modes for TLS code. These use and enforce the requirements 769 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and 770 only use Suite B curves. The Suite B modes can be set by using the 771 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring. 772 [Steve Henson] 773 774 *) New chain verification flags for Suite B levels of security. Check 775 algorithms are acceptable when flags are set in X509_verify_cert. 776 [Steve Henson] 777 778 *) Make tls1_check_chain return a set of flags indicating checks passed 779 by a certificate chain. Add additional tests to handle client 780 certificates: checks for matching certificate type and issuer name 781 comparison. 782 [Steve Henson] 783 784 *) If an attempt is made to use a signature algorithm not in the peer 785 preference list abort the handshake. If client has no suitable 786 signature algorithms in response to a certificate request do not 787 use the certificate. 788 [Steve Henson] 789 790 *) If server EC tmp key is not in client preference list abort handshake. 791 [Steve Henson] 792 793 *) Add support for certificate stores in CERT structure. This makes it 794 possible to have different stores per SSL structure or one store in 795 the parent SSL_CTX. Include distint stores for certificate chain 796 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN 797 to build and store a certificate chain in CERT structure: returing 798 an error if the chain cannot be built: this will allow applications 799 to test if a chain is correctly configured. 800 801 Note: if the CERT based stores are not set then the parent SSL_CTX 802 store is used to retain compatibility with existing behaviour. 803 804 [Steve Henson] 805 806 *) New function ssl_set_client_disabled to set a ciphersuite disabled 807 mask based on the current session, check mask when sending client 808 hello and checking the requested ciphersuite. 809 [Steve Henson] 810 811 *) New ctrls to retrieve and set certificate types in a certificate 812 request message. Print out received values in s_client. If certificate 813 types is not set with custom values set sensible values based on 814 supported signature algorithms. 815 [Steve Henson] 816 817 *) Support for distinct client and server supported signature algorithms. 818 [Steve Henson] 819 820 *) Add certificate callback. If set this is called whenever a certificate 821 is required by client or server. An application can decide which 822 certificate chain to present based on arbitrary criteria: for example 823 supported signature algorithms. Add very simple example to s_server. 824 This fixes many of the problems and restrictions of the existing client 825 certificate callback: for example you can now clear an existing 826 certificate and specify the whole chain. 827 [Steve Henson] 828 829 *) Add new "valid_flags" field to CERT_PKEY structure which determines what 830 the certificate can be used for (if anything). Set valid_flags field 831 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used 832 to have similar checks in it. 833 834 Add new "cert_flags" field to CERT structure and include a "strict mode". 835 This enforces some TLS certificate requirements (such as only permitting 836 certificate signature algorithms contained in the supported algorithms 837 extension) which some implementations ignore: this option should be used 838 with caution as it could cause interoperability issues. 839 [Steve Henson] 840 841 *) Update and tidy signature algorithm extension processing. Work out 842 shared signature algorithms based on preferences and peer algorithms 843 and print them out in s_client and s_server. Abort handshake if no 844 shared signature algorithms. 845 [Steve Henson] 846 847 *) Add new functions to allow customised supported signature algorithms 848 for SSL and SSL_CTX structures. Add options to s_client and s_server 849 to support them. 850 [Steve Henson] 851 852 *) New function SSL_certs_clear() to delete all references to certificates 853 from an SSL structure. Before this once a certificate had been added 854 it couldn't be removed. 855 [Steve Henson] 856 857 *) Integrate hostname, email address and IP address checking with certificate 858 verification. New verify options supporting checking in opensl utility. 859 [Steve Henson] 860 861 *) Fixes and wildcard matching support to hostname and email checking 862 functions. Add manual page. 863 [Florian Weimer (Red Hat Product Security Team)] 864 865 *) New functions to check a hostname email or IP address against a 866 certificate. Add options x509 utility to print results of checks against 867 a certificate. 868 [Steve Henson] 869 870 *) Fix OCSP checking. 871 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie] 872 873 *) Initial experimental support for explicitly trusted non-root CAs. 874 OpenSSL still tries to build a complete chain to a root but if an 875 intermediate CA has a trust setting included that is used. The first 876 setting is used: whether to trust (e.g., -addtrust option to the x509 877 utility) or reject. 878 [Steve Henson] 879 880 *) Add -trusted_first option which attempts to find certificates in the 881 trusted store even if an untrusted chain is also supplied. 882 [Steve Henson] 883 884 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE, 885 platform support for Linux and Android. 886 [Andy Polyakov] 887 888 *) Support for linux-x32, ILP32 environment in x86_64 framework. 889 [Andy Polyakov] 890 891 *) Experimental multi-implementation support for FIPS capable OpenSSL. 892 When in FIPS mode the approved implementations are used as normal, 893 when not in FIPS mode the internal unapproved versions are used instead. 894 This means that the FIPS capable OpenSSL isn't forced to use the 895 (often lower perfomance) FIPS implementations outside FIPS mode. 896 [Steve Henson] 897 898 *) Transparently support X9.42 DH parameters when calling 899 PEM_read_bio_DHparameters. This means existing applications can handle 900 the new parameter format automatically. 901 [Steve Henson] 902 903 *) Initial experimental support for X9.42 DH parameter format: mainly 904 to support use of 'q' parameter for RFC5114 parameters. 905 [Steve Henson] 906 907 *) Add DH parameters from RFC5114 including test data to dhtest. 908 [Steve Henson] 909 910 *) Support for automatic EC temporary key parameter selection. If enabled 911 the most preferred EC parameters are automatically used instead of 912 hardcoded fixed parameters. Now a server just has to call: 913 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically 914 support ECDH and use the most appropriate parameters. 915 [Steve Henson] 916 917 *) Enhance and tidy EC curve and point format TLS extension code. Use 918 static structures instead of allocation if default values are used. 919 New ctrls to set curves we wish to support and to retrieve shared curves. 920 Print out shared curves in s_server. New options to s_server and s_client 921 to set list of supported curves. 922 [Steve Henson] 923 924 *) New ctrls to retrieve supported signature algorithms and 925 supported curve values as an array of NIDs. Extend openssl utility 926 to print out received values. 927 [Steve Henson] 928 929 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert 930 between NIDs and the more common NIST names such as "P-256". Enhance 931 ecparam utility and ECC method to recognise the NIST names for curves. 932 [Steve Henson] 933 934 *) Enhance SSL/TLS certificate chain handling to support different 935 chains for each certificate instead of one chain in the parent SSL_CTX. 936 [Steve Henson] 937 938 *) Support for fixed DH ciphersuite client authentication: where both 939 server and client use DH certificates with common parameters. 940 [Steve Henson] 941 942 *) Support for fixed DH ciphersuites: those requiring DH server 943 certificates. 944 [Steve Henson] 945 946 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of 947 the certificate. 948 Note: Related 1.0.2-beta specific macros X509_get_cert_info, 949 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and 950 X509_CINF_get_signature were reverted post internal team review. 951 952 Changes between 1.0.1k and 1.0.1l [15 Jan 2015] 953 954 *) Build fixes for the Windows and OpenVMS platforms 955 [Matt Caswell and Richard Levitte] 956 957 Changes between 1.0.1j and 1.0.1k [8 Jan 2015] 958 959 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS 960 message can cause a segmentation fault in OpenSSL due to a NULL pointer 961 dereference. This could lead to a Denial Of Service attack. Thanks to 962 Markus Stenberg of Cisco Systems, Inc. for reporting this issue. 963 (CVE-2014-3571) 964 [Steve Henson] 965 966 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the 967 dtls1_buffer_record function under certain conditions. In particular this 968 could occur if an attacker sent repeated DTLS records with the same 969 sequence number but for the next epoch. The memory leak could be exploited 970 by an attacker in a Denial of Service attack through memory exhaustion. 971 Thanks to Chris Mueller for reporting this issue. 972 (CVE-2015-0206) 973 [Matt Caswell] 974 975 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is 976 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl 977 method would be set to NULL which could later result in a NULL pointer 978 dereference. Thanks to Frank Schmirler for reporting this issue. 979 (CVE-2014-3569) 980 [Kurt Roeckx] 981 982 *) Abort handshake if server key exchange message is omitted for ephemeral 983 ECDH ciphersuites. 984 985 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for 986 reporting this issue. 987 (CVE-2014-3572) 988 [Steve Henson] 989 990 *) Remove non-export ephemeral RSA code on client and server. This code 991 violated the TLS standard by allowing the use of temporary RSA keys in 992 non-export ciphersuites and could be used by a server to effectively 993 downgrade the RSA key length used to a value smaller than the server 994 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at 995 INRIA or reporting this issue. 996 (CVE-2015-0204) 997 [Steve Henson] 998 999 *) Fixed issue where DH client certificates are accepted without verification. 1000 An OpenSSL server will accept a DH certificate for client authentication 1001 without the certificate verify message. This effectively allows a client to 1002 authenticate without the use of a private key. This only affects servers 1003 which trust a client certificate authority which issues certificates 1004 containing DH keys: these are extremely rare and hardly ever encountered. 1005 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting 1006 this issue. 1007 (CVE-2015-0205) 1008 [Steve Henson] 1009 1010 *) Ensure that the session ID context of an SSL is updated when its 1011 SSL_CTX is updated via SSL_set_SSL_CTX. 1012 1013 The session ID context is typically set from the parent SSL_CTX, 1014 and can vary with the CTX. 1015 [Adam Langley] 1016 1017 *) Fix various certificate fingerprint issues. 1018 1019 By using non-DER or invalid encodings outside the signed portion of a 1020 certificate the fingerprint can be changed without breaking the signature. 1021 Although no details of the signed portion of the certificate can be changed 1022 this can cause problems with some applications: e.g. those using the 1023 certificate fingerprint for blacklists. 1024 1025 1. Reject signatures with non zero unused bits. 1026 1027 If the BIT STRING containing the signature has non zero unused bits reject 1028 the signature. All current signature algorithms require zero unused bits. 1029 1030 2. Check certificate algorithm consistency. 1031 1032 Check the AlgorithmIdentifier inside TBS matches the one in the 1033 certificate signature. NB: this will result in signature failure 1034 errors for some broken certificates. 1035 1036 Thanks to Konrad Kraszewski from Google for reporting this issue. 1037 1038 3. Check DSA/ECDSA signatures use DER. 1039 1040 Reencode DSA/ECDSA signatures and compare with the original received 1041 signature. Return an error if there is a mismatch. 1042 1043 This will reject various cases including garbage after signature 1044 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS 1045 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs 1046 (negative or with leading zeroes). 1047 1048 Further analysis was conducted and fixes were developed by Stephen Henson 1049 of the OpenSSL core team. 1050 1051 (CVE-2014-8275) 1052 [Steve Henson] 1053 1054 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect 1055 results on some platforms, including x86_64. This bug occurs at random 1056 with a very low probability, and is not known to be exploitable in any 1057 way, though its exact impact is difficult to determine. Thanks to Pieter 1058 Wuille (Blockstream) who reported this issue and also suggested an initial 1059 fix. Further analysis was conducted by the OpenSSL development team and 1060 Adam Langley of Google. The final fix was developed by Andy Polyakov of 1061 the OpenSSL core team. 1062 (CVE-2014-3570) 1063 [Andy Polyakov] 1064 1065 *) Do not resume sessions on the server if the negotiated protocol 1066 version does not match the session's version. Resuming with a different 1067 version, while not strictly forbidden by the RFC, is of questionable 1068 sanity and breaks all known clients. 1069 [David Benjamin, Emilia K��sper] 1070 1071 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject 1072 early CCS messages during renegotiation. (Note that because 1073 renegotiation is encrypted, this early CCS was not exploitable.) 1074 [Emilia K��sper] 1075 1076 *) Tighten client-side session ticket handling during renegotiation: 1077 ensure that the client only accepts a session ticket if the server sends 1078 the extension anew in the ServerHello. Previously, a TLS client would 1079 reuse the old extension state and thus accept a session ticket if one was 1080 announced in the initial ServerHello. 1081 1082 Similarly, ensure that the client requires a session ticket if one 1083 was advertised in the ServerHello. Previously, a TLS client would 1084 ignore a missing NewSessionTicket message. 1085 [Emilia K��sper] 1086 1087 Changes between 1.0.1i and 1.0.1j [15 Oct 2014] 1088 1089 *) SRTP Memory Leak. 1090 1091 A flaw in the DTLS SRTP extension parsing code allows an attacker, who 1092 sends a carefully crafted handshake message, to cause OpenSSL to fail 1093 to free up to 64k of memory causing a memory leak. This could be 1094 exploited in a Denial Of Service attack. This issue affects OpenSSL 1095 1.0.1 server implementations for both SSL/TLS and DTLS regardless of 1096 whether SRTP is used or configured. Implementations of OpenSSL that 1097 have been compiled with OPENSSL_NO_SRTP defined are not affected. 1098 1099 The fix was developed by the OpenSSL team. 1100 (CVE-2014-3513) 1101 [OpenSSL team] 1102 1103 *) Session Ticket Memory Leak. 1104 1105 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the 1106 integrity of that ticket is first verified. In the event of a session 1107 ticket integrity check failing, OpenSSL will fail to free memory 1108 causing a memory leak. By sending a large number of invalid session 1109 tickets an attacker could exploit this issue in a Denial Of Service 1110 attack. 1111 (CVE-2014-3567) 1112 [Steve Henson] 1113 1114 *) Build option no-ssl3 is incomplete. 1115 1116 When OpenSSL is configured with "no-ssl3" as a build option, servers 1117 could accept and complete a SSL 3.0 handshake, and clients could be 1118 configured to send them. 1119 (CVE-2014-3568) 1120 [Akamai and the OpenSSL team] 1121 1122 *) Add support for TLS_FALLBACK_SCSV. 1123 Client applications doing fallback retries should call 1124 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV). 1125 (CVE-2014-3566) 1126 [Adam Langley, Bodo Moeller] 1127 1128 *) Add additional DigestInfo checks. 1129 1130 Reencode DigestInto in DER and check against the original when 1131 verifying RSA signature: this will reject any improperly encoded 1132 DigestInfo structures. 1133 1134 Note: this is a precautionary measure and no attacks are currently known. 1135 1136 [Steve Henson] 1137 1138 Changes between 1.0.1h and 1.0.1i [6 Aug 2014] 1139 1140 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the 1141 SRP code can be overrun an internal buffer. Add sanity check that 1142 g, A, B < N to SRP code. 1143 1144 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC 1145 Group for discovering this issue. 1146 (CVE-2014-3512) 1147 [Steve Henson] 1148 1149 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate 1150 TLS 1.0 instead of higher protocol versions when the ClientHello message 1151 is badly fragmented. This allows a man-in-the-middle attacker to force a 1152 downgrade to TLS 1.0 even if both the server and the client support a 1153 higher protocol version, by modifying the client's TLS records. 1154 1155 Thanks to David Benjamin and Adam Langley (Google) for discovering and 1156 researching this issue. 1157 (CVE-2014-3511) 1158 [David Benjamin] 1159 1160 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject 1161 to a denial of service attack. A malicious server can crash the client 1162 with a null pointer dereference (read) by specifying an anonymous (EC)DH 1163 ciphersuite and sending carefully crafted handshake messages. 1164 1165 Thanks to Felix Gr��bert (Google) for discovering and researching this 1166 issue. 1167 (CVE-2014-3510) 1168 [Emilia K��sper] 1169 1170 *) By sending carefully crafted DTLS packets an attacker could cause openssl 1171 to leak memory. This can be exploited through a Denial of Service attack. 1172 Thanks to Adam Langley for discovering and researching this issue. 1173 (CVE-2014-3507) 1174 [Adam Langley] 1175 1176 *) An attacker can force openssl to consume large amounts of memory whilst 1177 processing DTLS handshake messages. This can be exploited through a 1178 Denial of Service attack. 1179 Thanks to Adam Langley for discovering and researching this issue. 1180 (CVE-2014-3506) 1181 [Adam Langley] 1182 1183 *) An attacker can force an error condition which causes openssl to crash 1184 whilst processing DTLS packets due to memory being freed twice. This 1185 can be exploited through a Denial of Service attack. 1186 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching 1187 this issue. 1188 (CVE-2014-3505) 1189 [Adam Langley] 1190 1191 *) If a multithreaded client connects to a malicious server using a resumed 1192 session and the server sends an ec point format extension it could write 1193 up to 255 bytes to freed memory. 1194 1195 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this 1196 issue. 1197 (CVE-2014-3509) 1198 [Gabor Tyukasz] 1199 1200 *) A malicious server can crash an OpenSSL client with a null pointer 1201 dereference (read) by specifying an SRP ciphersuite even though it was not 1202 properly negotiated with the client. This can be exploited through a 1203 Denial of Service attack. 1204 1205 Thanks to Joonas Kuorilehto and Riku Hietam��ki (Codenomicon) for 1206 discovering and researching this issue. 1207 (CVE-2014-5139) 1208 [Steve Henson] 1209 1210 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as 1211 X509_name_oneline, X509_name_print_ex et al. to leak some information 1212 from the stack. Applications may be affected if they echo pretty printing 1213 output to the attacker. 1214 1215 Thanks to Ivan Fratric (Google) for discovering this issue. 1216 (CVE-2014-3508) 1217 [Emilia K��sper, and Steve Henson] 1218 1219 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) 1220 for corner cases. (Certain input points at infinity could lead to 1221 bogus results, with non-infinity inputs mapped to infinity too.) 1222 [Bodo Moeller] 1223 1224 Changes between 1.0.1g and 1.0.1h [5 Jun 2014] 1225 1226 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted 1227 handshake can force the use of weak keying material in OpenSSL 1228 SSL/TLS clients and servers. 1229 1230 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and 1231 researching this issue. (CVE-2014-0224) 1232 [KIKUCHI Masashi, Steve Henson] 1233 1234 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an 1235 OpenSSL DTLS client the code can be made to recurse eventually crashing 1236 in a DoS attack. 1237 1238 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue. 1239 (CVE-2014-0221) 1240 [Imre Rad, Steve Henson] 1241 1242 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can 1243 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS 1244 client or server. This is potentially exploitable to run arbitrary 1245 code on a vulnerable client or server. 1246 1247 Thanks to J��ri Aedla for reporting this issue. (CVE-2014-0195) 1248 [J��ri Aedla, Steve Henson] 1249 1250 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites 1251 are subject to a denial of service attack. 1252 1253 Thanks to Felix Gr��bert and Ivan Fratric at Google for discovering 1254 this issue. (CVE-2014-3470) 1255 [Felix Gr��bert, Ivan Fratric, Steve Henson] 1256 1257 *) Harmonize version and its documentation. -f flag is used to display 1258 compilation flags. 1259 [mancha <mancha1@zoho.com>] 1260 1261 *) Fix eckey_priv_encode so it immediately returns an error upon a failure 1262 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue. 1263 [mancha <mancha1@zoho.com>] 1264 1265 *) Fix some double frees. These are not thought to be exploitable. 1266 [mancha <mancha1@zoho.com>] 1267 1268 Changes between 1.0.1f and 1.0.1g [7 Apr 2014] 1269 1270 *) A missing bounds check in the handling of the TLS heartbeat extension 1271 can be used to reveal up to 64k of memory to a connected client or 1272 server. 1273 1274 Thanks for Neel Mehta of Google Security for discovering this bug and to 1275 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for 1276 preparing the fix (CVE-2014-0160) 1277 [Adam Langley, Bodo Moeller] 1278 1279 *) Fix for the attack described in the paper "Recovering OpenSSL 1280 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack" 1281 by Yuval Yarom and Naomi Benger. Details can be obtained from: 1282 http://eprint.iacr.org/2014/140 1283 1284 Thanks to Yuval Yarom and Naomi Benger for discovering this 1285 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076) 1286 [Yuval Yarom and Naomi Benger] 1287 1288 *) TLS pad extension: draft-agl-tls-padding-03 1289 1290 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the 1291 TLS client Hello record length value would otherwise be > 255 and 1292 less that 512 pad with a dummy extension containing zeroes so it 1293 is at least 512 bytes long. 1294 1295 [Adam Langley, Steve Henson] 1296 1297 Changes between 1.0.1e and 1.0.1f [6 Jan 2014] 1298 1299 *) Fix for TLS record tampering bug. A carefully crafted invalid 1300 handshake could crash OpenSSL with a NULL pointer exception. 1301 Thanks to Anton Johansson for reporting this issues. 1302 (CVE-2013-4353) 1303 1304 *) Keep original DTLS digest and encryption contexts in retransmission 1305 structures so we can use the previous session parameters if they need 1306 to be resent. (CVE-2013-6450) 1307 [Steve Henson] 1308 1309 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which 1310 avoids preferring ECDHE-ECDSA ciphers when the client appears to be 1311 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for 1312 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug 1313 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing 1314 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer. 1315 [Rob Stradling, Adam Langley] 1316 1317 Changes between 1.0.1d and 1.0.1e [11 Feb 2013] 1318 1319 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI 1320 supporting platforms or when small records were transferred. 1321 [Andy Polyakov, Steve Henson] 1322 1323 Changes between 1.0.1c and 1.0.1d [5 Feb 2013] 1324 1325 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time. 1326 1327 This addresses the flaw in CBC record processing discovered by 1328 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found 1329 at: http://www.isg.rhul.ac.uk/tls/ 1330 1331 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information 1332 Security Group at Royal Holloway, University of London 1333 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and 1334 Emilia K��sper for the initial patch. 1335 (CVE-2013-0169) 1336 [Emilia K��sper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson] 1337 1338 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode 1339 ciphersuites which can be exploited in a denial of service attack. 1340 Thanks go to and to Adam Langley <agl@chromium.org> for discovering 1341 and detecting this bug and to Wolfgang Ettlinger 1342 <wolfgang.ettlinger@gmail.com> for independently discovering this issue. 1343 (CVE-2012-2686) 1344 [Adam Langley] 1345 1346 *) Return an error when checking OCSP signatures when key is NULL. 1347 This fixes a DoS attack. (CVE-2013-0166) 1348 [Steve Henson] 1349 1350 *) Make openssl verify return errors. 1351 [Chris Palmer <palmer@google.com> and Ben Laurie] 1352 1353 *) Call OCSP Stapling callback after ciphersuite has been chosen, so 1354 the right response is stapled. Also change SSL_get_certificate() 1355 so it returns the certificate actually sent. 1356 See http://rt.openssl.org/Ticket/Display.html?id=2836. 1357 [Rob Stradling <rob.stradling@comodo.com>] 1358 1359 *) Fix possible deadlock when decoding public keys. 1360 [Steve Henson] 1361 1362 *) Don't use TLS 1.0 record version number in initial client hello 1363 if renegotiating. 1364 [Steve Henson] 1365 1366 Changes between 1.0.1b and 1.0.1c [10 May 2012] 1367 1368 *) Sanity check record length before skipping explicit IV in TLS 1369 1.2, 1.1 and DTLS to fix DoS attack. 1370 1371 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic 1372 fuzzing as a service testing platform. 1373 (CVE-2012-2333) 1374 [Steve Henson] 1375 1376 *) Initialise tkeylen properly when encrypting CMS messages. 1377 Thanks to Solar Designer of Openwall for reporting this issue. 1378 [Steve Henson] 1379 1380 *) In FIPS mode don't try to use composite ciphers as they are not 1381 approved. 1382 [Steve Henson] 1383 1384 Changes between 1.0.1a and 1.0.1b [26 Apr 2012] 1385 1386 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and 1387 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately 1388 mean any application compiled against OpenSSL 1.0.0 headers setting 1389 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng 1390 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to 1391 0x10000000L Any application which was previously compiled against 1392 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1 1393 will need to be recompiled as a result. Letting be results in 1394 inability to disable specifically TLS 1.1 and in client context, 1395 in unlike event, limit maximum offered version to TLS 1.0 [see below]. 1396 [Steve Henson] 1397 1398 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not 1399 disable just protocol X, but all protocols above X *if* there are 1400 protocols *below* X still enabled. In more practical terms it means 1401 that if application wants to disable TLS1.0 in favor of TLS1.1 and 1402 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass 1403 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to 1404 client side. 1405 [Andy Polyakov] 1406 1407 Changes between 1.0.1 and 1.0.1a [19 Apr 2012] 1408 1409 *) Check for potentially exploitable overflows in asn1_d2i_read_bio 1410 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer 1411 in CRYPTO_realloc_clean. 1412 1413 Thanks to Tavis Ormandy, Google Security Team, for discovering this 1414 issue and to Adam Langley <agl@chromium.org> for fixing it. 1415 (CVE-2012-2110) 1416 [Adam Langley (Google), Tavis Ormandy, Google Security Team] 1417 1418 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections. 1419 [Adam Langley] 1420 1421 *) Workarounds for some broken servers that "hang" if a client hello 1422 record length exceeds 255 bytes. 1423 1424 1. Do not use record version number > TLS 1.0 in initial client 1425 hello: some (but not all) hanging servers will now work. 1426 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate 1427 the number of ciphers sent in the client hello. This should be 1428 set to an even number, such as 50, for example by passing: 1429 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure. 1430 Most broken servers should now work. 1431 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable 1432 TLS 1.2 client support entirely. 1433 [Steve Henson] 1434 1435 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH. 1436 [Andy Polyakov] 1437 1438 Changes between 1.0.0h and 1.0.1 [14 Mar 2012] 1439 1440 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET 1441 STRING form instead of a DigestInfo. 1442 [Steve Henson] 1443 1444 *) The format used for MDC2 RSA signatures is inconsistent between EVP 1445 and the RSA_sign/RSA_verify functions. This was made more apparent when 1446 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular 1447 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect 1448 the correct format in RSA_verify so both forms transparently work. 1449 [Steve Henson] 1450 1451 *) Some servers which support TLS 1.0 can choke if we initially indicate 1452 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA 1453 encrypted premaster secret. As a workaround use the maximum pemitted 1454 client version in client hello, this should keep such servers happy 1455 and still work with previous versions of OpenSSL. 1456 [Steve Henson] 1457 1458 *) Add support for TLS/DTLS heartbeats. 1459 [Robin Seggelmann <seggelmann@fh-muenster.de>] 1460 1461 *) Add support for SCTP. 1462 [Robin Seggelmann <seggelmann@fh-muenster.de>] 1463 1464 *) Improved PRNG seeding for VOS. 1465 [Paul Green <Paul.Green@stratus.com>] 1466 1467 *) Extensive assembler packs updates, most notably: 1468 1469 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support; 1470 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES); 1471 - x86_64: bit-sliced AES implementation; 1472 - ARM: NEON support, contemporary platforms optimizations; 1473 - s390x: z196 support; 1474 - *: GHASH and GF(2^m) multiplication implementations; 1475 1476 [Andy Polyakov] 1477 1478 *) Make TLS-SRP code conformant with RFC 5054 API cleanup 1479 (removal of unnecessary code) 1480 [Peter Sylvester <peter.sylvester@edelweb.fr>] 1481 1482 *) Add TLS key material exporter from RFC 5705. 1483 [Eric Rescorla] 1484 1485 *) Add DTLS-SRTP negotiation from RFC 5764. 1486 [Eric Rescorla] 1487 1488 *) Add Next Protocol Negotiation, 1489 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be 1490 disabled with a no-npn flag to config or Configure. Code donated 1491 by Google. 1492 [Adam Langley <agl@google.com> and Ben Laurie] 1493 1494 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224, 1495 NIST-P256, NIST-P521, with constant-time single point multiplication on 1496 typical inputs. Compiler support for the nonstandard type __uint128_t is 1497 required to use this (present in gcc 4.4 and later, for 64-bit builds). 1498 Code made available under Apache License version 2.0. 1499 1500 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command 1501 line to include this in your build of OpenSSL, and run "make depend" (or 1502 "make update"). This enables the following EC_METHODs: 1503 1504 EC_GFp_nistp224_method() 1505 EC_GFp_nistp256_method() 1506 EC_GFp_nistp521_method() 1507 1508 EC_GROUP_new_by_curve_name() will automatically use these (while 1509 EC_GROUP_new_curve_GFp() currently prefers the more flexible 1510 implementations). 1511 [Emilia K��sper, Adam Langley, Bodo Moeller (Google)] 1512 1513 *) Use type ossl_ssize_t instad of ssize_t which isn't available on 1514 all platforms. Move ssize_t definition from e_os.h to the public 1515 header file e_os2.h as it now appears in public header file cms.h 1516 [Steve Henson] 1517 1518 *) New -sigopt option to the ca, req and x509 utilities. Additional 1519 signature parameters can be passed using this option and in 1520 particular PSS. 1521 [Steve Henson] 1522 1523 *) Add RSA PSS signing function. This will generate and set the 1524 appropriate AlgorithmIdentifiers for PSS based on those in the 1525 corresponding EVP_MD_CTX structure. No application support yet. 1526 [Steve Henson] 1527 1528 *) Support for companion algorithm specific ASN1 signing routines. 1529 New function ASN1_item_sign_ctx() signs a pre-initialised 1530 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on 1531 the appropriate parameters. 1532 [Steve Henson] 1533 1534 *) Add new algorithm specific ASN1 verification initialisation function 1535 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1 1536 handling will be the same no matter what EVP_PKEY_METHOD is used. 1537 Add a PSS handler to support verification of PSS signatures: checked 1538 against a number of sample certificates. 1539 [Steve Henson] 1540 1541 *) Add signature printing for PSS. Add PSS OIDs. 1542 [Steve Henson, Martin Kaiser <lists@kaiser.cx>] 1543 1544 *) Add algorithm specific signature printing. An individual ASN1 method 1545 can now print out signatures instead of the standard hex dump. 1546 1547 More complex signatures (e.g. PSS) can print out more meaningful 1548 information. Include DSA version that prints out the signature 1549 parameters r, s. 1550 [Steve Henson] 1551 1552 *) Password based recipient info support for CMS library: implementing 1553 RFC3211. 1554 [Steve Henson] 1555 1556 *) Split password based encryption into PBES2 and PBKDF2 functions. This 1557 neatly separates the code into cipher and PBE sections and is required 1558 for some algorithms that split PBES2 into separate pieces (such as 1559 password based CMS). 1560 [Steve Henson] 1561 1562 *) Session-handling fixes: 1563 - Fix handling of connections that are resuming with a session ID, 1564 but also support Session Tickets. 1565 - Fix a bug that suppressed issuing of a new ticket if the client 1566 presented a ticket with an expired session. 1567 - Try to set the ticket lifetime hint to something reasonable. 1568 - Make tickets shorter by excluding irrelevant information. 1569 - On the client side, don't ignore renewed tickets. 1570 [Adam Langley, Bodo Moeller (Google)] 1571 1572 *) Fix PSK session representation. 1573 [Bodo Moeller] 1574 1575 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations. 1576 1577 This work was sponsored by Intel. 1578 [Andy Polyakov] 1579 1580 *) Add GCM support to TLS library. Some custom code is needed to split 1581 the IV between the fixed (from PRF) and explicit (from TLS record) 1582 portions. This adds all GCM ciphersuites supported by RFC5288 and 1583 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and 1584 add a special AESGCM string for GCM only. 1585 [Steve Henson] 1586 1587 *) Expand range of ctrls for AES GCM. Permit setting invocation 1588 field on decrypt and retrieval of invocation field only on encrypt. 1589 [Steve Henson] 1590 1591 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support. 1592 As required by RFC5289 these ciphersuites cannot be used if for 1593 versions of TLS earlier than 1.2. 1594 [Steve Henson] 1595 1596 *) For FIPS capable OpenSSL interpret a NULL default public key method 1597 as unset and return the appopriate default but do *not* set the default. 1598 This means we can return the appopriate method in applications that 1599 swicth between FIPS and non-FIPS modes. 1600 [Steve Henson] 1601 1602 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an 1603 ENGINE is used then we cannot handle that in the FIPS module so we 1604 keep original code iff non-FIPS operations are allowed. 1605 [Steve Henson] 1606 1607 *) Add -attime option to openssl utilities. 1608 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson] 1609 1610 *) Redirect DSA and DH operations to FIPS module in FIPS mode. 1611 [Steve Henson] 1612 1613 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use 1614 FIPS EC methods unconditionally for now. 1615 [Steve Henson] 1616 1617 *) New build option no-ec2m to disable characteristic 2 code. 1618 [Steve Henson] 1619 1620 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not 1621 all cases can be covered as some introduce binary incompatibilities. 1622 [Steve Henson] 1623 1624 *) Redirect RSA operations to FIPS module including keygen, 1625 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods. 1626 [Steve Henson] 1627 1628 *) Add similar low level API blocking to ciphers. 1629 [Steve Henson] 1630 1631 *) Low level digest APIs are not approved in FIPS mode: any attempt 1632 to use these will cause a fatal error. Applications that *really* want 1633 to use them can use the private_* version instead. 1634 [Steve Henson] 1635 1636 *) Redirect cipher operations to FIPS module for FIPS builds. 1637 [Steve Henson] 1638 1639 *) Redirect digest operations to FIPS module for FIPS builds. 1640 [Steve Henson] 1641 1642 *) Update build system to add "fips" flag which will link in fipscanister.o 1643 for static and shared library builds embedding a signature if needed. 1644 [Steve Henson] 1645 1646 *) Output TLS supported curves in preference order instead of numerical 1647 order. This is currently hardcoded for the highest order curves first. 1648 This should be configurable so applications can judge speed vs strength. 1649 [Steve Henson] 1650 1651 *) Add TLS v1.2 server support for client authentication. 1652 [Steve Henson] 1653 1654 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers 1655 and enable MD5. 1656 [Steve Henson] 1657 1658 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying 1659 FIPS modules versions. 1660 [Steve Henson] 1661 1662 *) Add TLS v1.2 client side support for client authentication. Keep cache 1663 of handshake records longer as we don't know the hash algorithm to use 1664 until after the certificate request message is received. 1665 [Steve Henson] 1666 1667 *) Initial TLS v1.2 client support. Add a default signature algorithms 1668 extension including all the algorithms we support. Parse new signature 1669 format in client key exchange. Relax some ECC signing restrictions for 1670 TLS v1.2 as indicated in RFC5246. 1671 [Steve Henson] 1672 1673 *) Add server support for TLS v1.2 signature algorithms extension. Switch 1674 to new signature format when needed using client digest preference. 1675 All server ciphersuites should now work correctly in TLS v1.2. No client 1676 support yet and no support for client certificates. 1677 [Steve Henson] 1678 1679 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch 1680 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based 1681 ciphersuites. At present only RSA key exchange ciphersuites work with 1682 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete 1683 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods 1684 and version checking. 1685 [Steve Henson] 1686 1687 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled 1688 with this defined it will not be affected by any changes to ssl internal 1689 structures. Add several utility functions to allow openssl application 1690 to work with OPENSSL_NO_SSL_INTERN defined. 1691 [Steve Henson] 1692 1693 *) Add SRP support. 1694 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie] 1695 1696 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id. 1697 [Steve Henson] 1698 1699 *) Permit abbreviated handshakes when renegotiating using the function 1700 SSL_renegotiate_abbreviated(). 1701 [Robin Seggelmann <seggelmann@fh-muenster.de>] 1702 1703 *) Add call to ENGINE_register_all_complete() to 1704 ENGINE_load_builtin_engines(), so some implementations get used 1705 automatically instead of needing explicit application support. 1706 [Steve Henson] 1707 1708 *) Add support for TLS key exporter as described in RFC5705. 1709 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson] 1710 1711 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only 1712 a few changes are required: 1713 1714 Add SSL_OP_NO_TLSv1_1 flag. 1715 Add TLSv1_1 methods. 1716 Update version checking logic to handle version 1.1. 1717 Add explicit IV handling (ported from DTLS code). 1718 Add command line options to s_client/s_server. 1719 [Steve Henson] 1720 1721 Changes between 1.0.0g and 1.0.0h [12 Mar 2012] 1722 1723 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness 1724 in CMS and PKCS7 code. When RSA decryption fails use a random key for 1725 content decryption and always return the same error. Note: this attack 1726 needs on average 2^20 messages so it only affects automated senders. The 1727 old behaviour can be reenabled in the CMS code by setting the 1728 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where 1729 an MMA defence is not necessary. 1730 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering 1731 this issue. (CVE-2012-0884) 1732 [Steve Henson] 1733 1734 *) Fix CVE-2011-4619: make sure we really are receiving a 1735 client hello before rejecting multiple SGC restarts. Thanks to 1736 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug. 1737 [Steve Henson] 1738 1739 Changes between 1.0.0f and 1.0.0g [18 Jan 2012] 1740 1741 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109. 1742 Thanks to Antonio Martin, Enterprise Secure Access Research and 1743 Development, Cisco Systems, Inc. for discovering this bug and 1744 preparing a fix. (CVE-2012-0050) 1745 [Antonio Martin] 1746 1747 Changes between 1.0.0e and 1.0.0f [4 Jan 2012] 1748 1749 *) Nadhem Alfardan and Kenny Paterson have discovered an extension 1750 of the Vaudenay padding oracle attack on CBC mode encryption 1751 which enables an efficient plaintext recovery attack against 1752 the OpenSSL implementation of DTLS. Their attack exploits timing 1753 differences arising during decryption processing. A research 1754 paper describing this attack can be found at: 1755 http://www.isg.rhul.ac.uk/~kp/dtls.pdf 1756 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information 1757 Security Group at Royal Holloway, University of London 1758 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann 1759 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de> 1760 for preparing the fix. (CVE-2011-4108) 1761 [Robin Seggelmann, Michael Tuexen] 1762 1763 *) Clear bytes used for block padding of SSL 3.0 records. 1764 (CVE-2011-4576) 1765 [Adam Langley (Google)] 1766 1767 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George 1768 Kadianakis <desnacked@gmail.com> for discovering this issue and 1769 Adam Langley for preparing the fix. (CVE-2011-4619) 1770 [Adam Langley (Google)] 1771 1772 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027) 1773 [Andrey Kulikov <amdeich@gmail.com>] 1774 1775 *) Prevent malformed RFC3779 data triggering an assertion failure. 1776 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw 1777 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577) 1778 [Rob Austein <sra@hactrn.net>] 1779 1780 *) Improved PRNG seeding for VOS. 1781 [Paul Green <Paul.Green@stratus.com>] 1782 1783 *) Fix ssl_ciph.c set-up race. 1784 [Adam Langley (Google)] 1785 1786 *) Fix spurious failures in ecdsatest.c. 1787 [Emilia K��sper (Google)] 1788 1789 *) Fix the BIO_f_buffer() implementation (which was mixing different 1790 interpretations of the '..._len' fields). 1791 [Adam Langley (Google)] 1792 1793 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than 1794 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent 1795 threads won't reuse the same blinding coefficients. 1796 1797 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING 1798 lock to call BN_BLINDING_invert_ex, and avoids one use of 1799 BN_BLINDING_update for each BN_BLINDING structure (previously, 1800 the last update always remained unused). 1801 [Emilia K��sper (Google)] 1802 1803 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf. 1804 [Bob Buckholz (Google)] 1805 1806 Changes between 1.0.0d and 1.0.0e [6 Sep 2011] 1807 1808 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted 1809 by initialising X509_STORE_CTX properly. (CVE-2011-3207) 1810 [Kaspar Brand <ossl@velox.ch>] 1811 1812 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular 1813 for multi-threaded use of ECDH. (CVE-2011-3210) 1814 [Adam Langley (Google)] 1815 1816 *) Fix x509_name_ex_d2i memory leak on bad inputs. 1817 [Bodo Moeller] 1818 1819 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check 1820 signature public key algorithm by using OID xref utilities instead. 1821 Before this you could only use some ECC ciphersuites with SHA1 only. 1822 [Steve Henson] 1823 1824 *) Add protection against ECDSA timing attacks as mentioned in the paper 1825 by Billy Bob Brumley and Nicola Tuveri, see: 1826 1827 http://eprint.iacr.org/2011/232.pdf 1828 1829 [Billy Bob Brumley and Nicola Tuveri] 1830 1831 Changes between 1.0.0c and 1.0.0d [8 Feb 2011] 1832 1833 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014 1834 [Neel Mehta, Adam Langley, Bodo Moeller (Google)] 1835 1836 *) Fix bug in string printing code: if *any* escaping is enabled we must 1837 escape the escape character (backslash) or the resulting string is 1838 ambiguous. 1839 [Steve Henson] 1840 1841 Changes between 1.0.0b and 1.0.0c [2 Dec 2010] 1842 1843 *) Disable code workaround for ancient and obsolete Netscape browsers 1844 and servers: an attacker can use it in a ciphersuite downgrade attack. 1845 Thanks to Martin Rex for discovering this bug. CVE-2010-4180 1846 [Steve Henson] 1847 1848 *) Fixed J-PAKE implementation error, originally discovered by 1849 Sebastien Martini, further info and confirmation from Stefan 1850 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252 1851 [Ben Laurie] 1852 1853 Changes between 1.0.0a and 1.0.0b [16 Nov 2010] 1854 1855 *) Fix extension code to avoid race conditions which can result in a buffer 1856 overrun vulnerability: resumed sessions must not be modified as they can 1857 be shared by multiple threads. CVE-2010-3864 1858 [Steve Henson] 1859 1860 *) Fix WIN32 build system to correctly link an ENGINE directory into 1861 a DLL. 1862 [Steve Henson] 1863 1864 Changes between 1.0.0 and 1.0.0a [01 Jun 2010] 1865 1866 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover 1867 (CVE-2010-1633) 1868 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>] 1869 1870 Changes between 0.9.8n and 1.0.0 [29 Mar 2010] 1871 1872 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher 1873 context. The operation can be customised via the ctrl mechanism in 1874 case ENGINEs want to include additional functionality. 1875 [Steve Henson] 1876 1877 *) Tolerate yet another broken PKCS#8 key format: private key value negative. 1878 [Steve Henson] 1879 1880 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to 1881 output hashes compatible with older versions of OpenSSL. 1882 [Willy Weisz <weisz@vcpc.univie.ac.at>] 1883 1884 *) Fix compression algorithm handling: if resuming a session use the 1885 compression algorithm of the resumed session instead of determining 1886 it from client hello again. Don't allow server to change algorithm. 1887 [Steve Henson] 1888 1889 *) Add load_crls() function to apps tidying load_certs() too. Add option 1890 to verify utility to allow additional CRLs to be included. 1891 [Steve Henson] 1892 1893 *) Update OCSP request code to permit adding custom headers to the request: 1894 some responders need this. 1895 [Steve Henson] 1896 1897 *) The function EVP_PKEY_sign() returns <=0 on error: check return code 1898 correctly. 1899 [Julia Lawall <julia@diku.dk>] 1900 1901 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it 1902 needlessly dereferenced structures, used obsolete functions and 1903 didn't handle all updated verify codes correctly. 1904 [Steve Henson] 1905 1906 *) Disable MD2 in the default configuration. 1907 [Steve Henson] 1908 1909 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to 1910 indicate the initial BIO being pushed or popped. This makes it possible 1911 to determine whether the BIO is the one explicitly called or as a result 1912 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so 1913 it handles reference counts correctly and doesn't zero out the I/O bio 1914 when it is not being explicitly popped. WARNING: applications which 1915 included workarounds for the old buggy behaviour will need to be modified 1916 or they could free up already freed BIOs. 1917 [Steve Henson] 1918 1919 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni 1920 renaming to all platforms (within the 0.9.8 branch, this was 1921 done conditionally on Netware platforms to avoid a name clash). 1922 [Guenter <lists@gknw.net>] 1923 1924 *) Add ECDHE and PSK support to DTLS. 1925 [Michael Tuexen <tuexen@fh-muenster.de>] 1926 1927 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't 1928 be used on C++. 1929 [Steve Henson] 1930 1931 *) Add "missing" function EVP_MD_flags() (without this the only way to 1932 retrieve a digest flags is by accessing the structure directly. Update 1933 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest 1934 or cipher is registered as in the "from" argument. Print out all 1935 registered digests in the dgst usage message instead of manually 1936 attempting to work them out. 1937 [Steve Henson] 1938 1939 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello: 1940 this allows the use of compression and extensions. Change default cipher 1941 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2 1942 by default unless an application cipher string requests it. 1943 [Steve Henson] 1944 1945 *) Alter match criteria in PKCS12_parse(). It used to try to use local 1946 key ids to find matching certificates and keys but some PKCS#12 files 1947 don't follow the (somewhat unwritten) rules and this strategy fails. 1948 Now just gather all certificates together and the first private key 1949 then look for the first certificate that matches the key. 1950 [Steve Henson] 1951 1952 *) Support use of registered digest and cipher names for dgst and cipher 1953 commands instead of having to add each one as a special case. So now 1954 you can do: 1955 1956 openssl sha256 foo 1957 1958 as well as: 1959 1960 openssl dgst -sha256 foo 1961 1962 and this works for ENGINE based algorithms too. 1963 1964 [Steve Henson] 1965 1966 *) Update Gost ENGINE to support parameter files. 1967 [Victor B. Wagner <vitus@cryptocom.ru>] 1968 1969 *) Support GeneralizedTime in ca utility. 1970 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson] 1971 1972 *) Enhance the hash format used for certificate directory links. The new 1973 form uses the canonical encoding (meaning equivalent names will work 1974 even if they aren't identical) and uses SHA1 instead of MD5. This form 1975 is incompatible with the older format and as a result c_rehash should 1976 be used to rebuild symbolic links. 1977 [Steve Henson] 1978 1979 *) Make PKCS#8 the default write format for private keys, replacing the 1980 traditional format. This form is standardised, more secure and doesn't 1981 include an implicit MD5 dependency. 1982 [Steve Henson] 1983 1984 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code 1985 committed to OpenSSL should pass this lot as a minimum. 1986 [Steve Henson] 1987 1988 *) Add session ticket override functionality for use by EAP-FAST. 1989 [Jouni Malinen <j@w1.fi>] 1990 1991 *) Modify HMAC functions to return a value. Since these can be implemented 1992 in an ENGINE errors can occur. 1993 [Steve Henson] 1994 1995 *) Type-checked OBJ_bsearch_ex. 1996 [Ben Laurie] 1997 1998 *) Type-checked OBJ_bsearch. Also some constification necessitated 1999 by type-checking. Still to come: TXT_DB, bsearch(?), 2000 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING, 2001 CONF_VALUE. 2002 [Ben Laurie] 2003 2004 *) New function OPENSSL_gmtime_adj() to add a specific number of days and 2005 seconds to a tm structure directly, instead of going through OS 2006 specific date routines. This avoids any issues with OS routines such 2007 as the year 2038 bug. New *_adj() functions for ASN1 time structures 2008 and X509_time_adj_ex() to cover the extended range. The existing 2009 X509_time_adj() is still usable and will no longer have any date issues. 2010 [Steve Henson] 2011 2012 *) Delta CRL support. New use deltas option which will attempt to locate 2013 and search any appropriate delta CRLs available. 2014 2015 This work was sponsored by Google. 2016 [Steve Henson] 2017 2018 *) Support for CRLs partitioned by reason code. Reorganise CRL processing 2019 code and add additional score elements. Validate alternate CRL paths 2020 as part of the CRL checking and indicate a new error "CRL path validation 2021 error" in this case. Applications wanting additional details can use 2022 the verify callback and check the new "parent" field. If this is not 2023 NULL CRL path validation is taking place. Existing applications wont 2024 see this because it requires extended CRL support which is off by 2025 default. 2026 2027 This work was sponsored by Google. 2028 [Steve Henson] 2029 2030 *) Support for freshest CRL extension. 2031 2032 This work was sponsored by Google. 2033 [Steve Henson] 2034 2035 *) Initial indirect CRL support. Currently only supported in the CRLs 2036 passed directly and not via lookup. Process certificate issuer 2037 CRL entry extension and lookup CRL entries by bother issuer name 2038 and serial number. Check and process CRL issuer entry in IDP extension. 2039 2040 This work was sponsored by Google. 2041 [Steve Henson] 2042 2043 *) Add support for distinct certificate and CRL paths. The CRL issuer 2044 certificate is validated separately in this case. Only enabled if 2045 an extended CRL support flag is set: this flag will enable additional 2046 CRL functionality in future. 2047 2048 This work was sponsored by Google. 2049 [Steve Henson] 2050 2051 *) Add support for policy mappings extension. 2052 2053 This work was sponsored by Google. 2054 [Steve Henson] 2055 2056 *) Fixes to pathlength constraint, self issued certificate handling, 2057 policy processing to align with RFC3280 and PKITS tests. 2058 2059 This work was sponsored by Google. 2060 [Steve Henson] 2061 2062 *) Support for name constraints certificate extension. DN, email, DNS 2063 and URI types are currently supported. 2064 2065 This work was sponsored by Google. 2066 [Steve Henson] 2067 2068 *) To cater for systems that provide a pointer-based thread ID rather 2069 than numeric, deprecate the current numeric thread ID mechanism and 2070 replace it with a structure and associated callback type. This 2071 mechanism allows a numeric "hash" to be extracted from a thread ID in 2072 either case, and on platforms where pointers are larger than 'long', 2073 mixing is done to help ensure the numeric 'hash' is usable even if it 2074 can't be guaranteed unique. The default mechanism is to use "&errno" 2075 as a pointer-based thread ID to distinguish between threads. 2076 2077 Applications that want to provide their own thread IDs should now use 2078 CRYPTO_THREADID_set_callback() to register a callback that will call 2079 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer(). 2080 2081 Note that ERR_remove_state() is now deprecated, because it is tied 2082 to the assumption that thread IDs are numeric. ERR_remove_state(0) 2083 to free the current thread's error state should be replaced by 2084 ERR_remove_thread_state(NULL). 2085 2086 (This new approach replaces the functions CRYPTO_set_idptr_callback(), 2087 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in 2088 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an 2089 application was previously providing a numeric thread callback that 2090 was inappropriate for distinguishing threads, then uniqueness might 2091 have been obtained with &errno that happened immediately in the 2092 intermediate development versions of OpenSSL; this is no longer the 2093 case, the numeric thread callback will now override the automatic use 2094 of &errno.) 2095 [Geoff Thorpe, with help from Bodo Moeller] 2096 2097 *) Initial support for different CRL issuing certificates. This covers a 2098 simple case where the self issued certificates in the chain exist and 2099 the real CRL issuer is higher in the existing chain. 2100 2101 This work was sponsored by Google. 2102 [Steve Henson] 2103 2104 *) Removed effectively defunct crypto/store from the build. 2105 [Ben Laurie] 2106 2107 *) Revamp of STACK to provide stronger type-checking. Still to come: 2108 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE, 2109 ASN1_STRING, CONF_VALUE. 2110 [Ben Laurie] 2111 2112 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer 2113 RAM on SSL connections. This option can save about 34k per idle SSL. 2114 [Nick Mathewson] 2115 2116 *) Revamp of LHASH to provide stronger type-checking. Still to come: 2117 STACK, TXT_DB, bsearch, qsort. 2118 [Ben Laurie] 2119 2120 *) Initial support for Cryptographic Message Syntax (aka CMS) based 2121 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility, 2122 support for data, signedData, compressedData, digestedData and 2123 encryptedData, envelopedData types included. Scripts to check against 2124 RFC4134 examples draft and interop and consistency checks of many 2125 content types and variants. 2126 [Steve Henson] 2127 2128 *) Add options to enc utility to support use of zlib compression BIO. 2129 [Steve Henson] 2130 2131 *) Extend mk1mf to support importing of options and assembly language 2132 files from Configure script, currently only included in VC-WIN32. 2133 The assembly language rules can now optionally generate the source 2134 files from the associated perl scripts. 2135 [Steve Henson] 2136 2137 *) Implement remaining functionality needed to support GOST ciphersuites. 2138 Interop testing has been performed using CryptoPro implementations. 2139 [Victor B. Wagner <vitus@cryptocom.ru>] 2140 2141 *) s390x assembler pack. 2142 [Andy Polyakov] 2143 2144 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU 2145 "family." 2146 [Andy Polyakov] 2147 2148 *) Implement Opaque PRF Input TLS extension as specified in 2149 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an 2150 official specification yet and no extension type assignment by 2151 IANA exists, this extension (for now) will have to be explicitly 2152 enabled when building OpenSSL by providing the extension number 2153 to use. For example, specify an option 2154 2155 -DTLSEXT_TYPE_opaque_prf_input=0x9527 2156 2157 to the "config" or "Configure" script to enable the extension, 2158 assuming extension number 0x9527 (which is a completely arbitrary 2159 and unofficial assignment based on the MD5 hash of the Internet 2160 Draft). Note that by doing so, you potentially lose 2161 interoperability with other TLS implementations since these might 2162 be using the same extension number for other purposes. 2163 2164 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the 2165 opaque PRF input value to use in the handshake. This will create 2166 an interal copy of the length-'len' string at 'src', and will 2167 return non-zero for success. 2168 2169 To get more control and flexibility, provide a callback function 2170 by using 2171 2172 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb) 2173 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg) 2174 2175 where 2176 2177 int (*cb)(SSL *, void *peerinput, size_t len, void *arg); 2178 void *arg; 2179 2180 Callback function 'cb' will be called in handshakes, and is 2181 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate. 2182 Argument 'arg' is for application purposes (the value as given to 2183 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly 2184 be provided to the callback function). The callback function 2185 has to return non-zero to report success: usually 1 to use opaque 2186 PRF input just if possible, or 2 to enforce use of the opaque PRF 2187 input. In the latter case, the library will abort the handshake 2188 if opaque PRF input is not successfully negotiated. 2189 2190 Arguments 'peerinput' and 'len' given to the callback function 2191 will always be NULL and 0 in the case of a client. A server will 2192 see the client's opaque PRF input through these variables if 2193 available (NULL and 0 otherwise). Note that if the server 2194 provides an opaque PRF input, the length must be the same as the 2195 length of the client's opaque PRF input. 2196 2197 Note that the callback function will only be called when creating 2198 a new session (session resumption can resume whatever was 2199 previously negotiated), and will not be called in SSL 2.0 2200 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or 2201 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended 2202 for applications that need to enforce opaque PRF input. 2203 2204 [Bodo Moeller] 2205 2206 *) Update ssl code to support digests other than SHA1+MD5 for handshake 2207 MAC. 2208 2209 [Victor B. Wagner <vitus@cryptocom.ru>] 2210 2211 *) Add RFC4507 support to OpenSSL. This includes the corrections in 2212 RFC4507bis. The encrypted ticket format is an encrypted encoded 2213 SSL_SESSION structure, that way new session features are automatically 2214 supported. 2215 2216 If a client application caches session in an SSL_SESSION structure 2217 support is transparent because tickets are now stored in the encoded 2218 SSL_SESSION. 2219 2220 The SSL_CTX structure automatically generates keys for ticket 2221 protection in servers so again support should be possible 2222 with no application modification. 2223 2224 If a client or server wishes to disable RFC4507 support then the option 2225 SSL_OP_NO_TICKET can be set. 2226 2227 Add a TLS extension debugging callback to allow the contents of any client 2228 or server extensions to be examined. 2229 2230 This work was sponsored by Google. 2231 [Steve Henson] 2232 2233 *) Final changes to avoid use of pointer pointer casts in OpenSSL. 2234 OpenSSL should now compile cleanly on gcc 4.2 2235 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson] 2236 2237 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC 2238 support including streaming MAC support: this is required for GOST 2239 ciphersuite support. 2240 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson] 2241 2242 *) Add option -stream to use PKCS#7 streaming in smime utility. New 2243 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream() 2244 to output in BER and PEM format. 2245 [Steve Henson] 2246 2247 *) Experimental support for use of HMAC via EVP_PKEY interface. This 2248 allows HMAC to be handled via the EVP_DigestSign*() interface. The 2249 EVP_PKEY "key" in this case is the HMAC key, potentially allowing 2250 ENGINE support for HMAC keys which are unextractable. New -mac and 2251 -macopt options to dgst utility. 2252 [Steve Henson] 2253 2254 *) New option -sigopt to dgst utility. Update dgst to use 2255 EVP_Digest{Sign,Verify}*. These two changes make it possible to use 2256 alternative signing paramaters such as X9.31 or PSS in the dgst 2257 utility. 2258 [Steve Henson] 2259 2260 *) Change ssl_cipher_apply_rule(), the internal function that does 2261 the work each time a ciphersuite string requests enabling 2262 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or 2263 removing ("!foo+bar") a class of ciphersuites: Now it maintains 2264 the order of disabled ciphersuites such that those ciphersuites 2265 that most recently went from enabled to disabled not only stay 2266 in order with respect to each other, but also have higher priority 2267 than other disabled ciphersuites the next time ciphersuites are 2268 enabled again. 2269 2270 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable 2271 the same ciphersuites as with "HIGH" alone, but in a specific 2272 order where the PSK ciphersuites come first (since they are the 2273 most recently disabled ciphersuites when "HIGH" is parsed). 2274 2275 Also, change ssl_create_cipher_list() (using this new 2276 funcionality) such that between otherwise identical 2277 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in 2278 the default order. 2279 [Bodo Moeller] 2280 2281 *) Change ssl_create_cipher_list() so that it automatically 2282 arranges the ciphersuites in reasonable order before starting 2283 to process the rule string. Thus, the definition for "DEFAULT" 2284 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but 2285 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH". 2286 This makes it much easier to arrive at a reasonable default order 2287 in applications for which anonymous ciphers are OK (meaning 2288 that you can't actually use DEFAULT). 2289 [Bodo Moeller; suggested by Victor Duchovni] 2290 2291 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string 2292 processing) into multiple integers instead of setting 2293 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK", 2294 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer. 2295 (These masks as well as the individual bit definitions are hidden 2296 away into the non-exported interface ssl/ssl_locl.h, so this 2297 change to the definition of the SSL_CIPHER structure shouldn't 2298 affect applications.) This give us more bits for each of these 2299 categories, so there is no longer a need to coagulate AES128 and 2300 AES256 into a single algorithm bit, and to coagulate Camellia128 2301 and Camellia256 into a single algorithm bit, which has led to all 2302 kinds of kludges. 2303 2304 Thus, among other things, the kludge introduced in 0.9.7m and 2305 0.9.8e for masking out AES256 independently of AES128 or masking 2306 out Camellia256 independently of AES256 is not needed here in 0.9.9. 2307 2308 With the change, we also introduce new ciphersuite aliases that 2309 so far were missing: "AES128", "AES256", "CAMELLIA128", and 2310 "CAMELLIA256". 2311 [Bodo Moeller] 2312 2313 *) Add support for dsa-with-SHA224 and dsa-with-SHA256. 2314 Use the leftmost N bytes of the signature input if the input is 2315 larger than the prime q (with N being the size in bytes of q). 2316 [Nils Larsch] 2317 2318 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses 2319 it yet and it is largely untested. 2320 [Steve Henson] 2321 2322 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types. 2323 [Nils Larsch] 2324 2325 *) Initial incomplete changes to avoid need for function casts in OpenSSL 2326 some compilers (gcc 4.2 and later) reject their use. Safestack is 2327 reimplemented. Update ASN1 to avoid use of legacy functions. 2328 [Steve Henson] 2329 2330 *) Win32/64 targets are linked with Winsock2. 2331 [Andy Polyakov] 2332 2333 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected 2334 to external functions. This can be used to increase CRL handling 2335 efficiency especially when CRLs are very large by (for example) storing 2336 the CRL revoked certificates in a database. 2337 [Steve Henson] 2338 2339 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so 2340 new CRLs added to a directory can be used. New command line option 2341 -verify_return_error to s_client and s_server. This causes real errors 2342 to be returned by the verify callback instead of carrying on no matter 2343 what. This reflects the way a "real world" verify callback would behave. 2344 [Steve Henson] 2345 2346 *) GOST engine, supporting several GOST algorithms and public key formats. 2347 Kindly donated by Cryptocom. 2348 [Cryptocom] 2349 2350 *) Partial support for Issuing Distribution Point CRL extension. CRLs 2351 partitioned by DP are handled but no indirect CRL or reason partitioning 2352 (yet). Complete overhaul of CRL handling: now the most suitable CRL is 2353 selected via a scoring technique which handles IDP and AKID in CRLs. 2354 [Steve Henson] 2355 2356 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which 2357 will ultimately be used for all verify operations: this will remove the 2358 X509_STORE dependency on certificate verification and allow alternative 2359 lookup methods. X509_STORE based implementations of these two callbacks. 2360 [Steve Henson] 2361 2362 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names. 2363 Modify get_crl() to find a valid (unexpired) CRL if possible. 2364 [Steve Henson] 2365 2366 *) New function X509_CRL_match() to check if two CRLs are identical. Normally 2367 this would be called X509_CRL_cmp() but that name is already used by 2368 a function that just compares CRL issuer names. Cache several CRL 2369 extensions in X509_CRL structure and cache CRLDP in X509. 2370 [Steve Henson] 2371 2372 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name) 2373 this maps equivalent X509_NAME structures into a consistent structure. 2374 Name comparison can then be performed rapidly using memcmp(). 2375 [Steve Henson] 2376 2377 *) Non-blocking OCSP request processing. Add -timeout option to ocsp 2378 utility. 2379 [Steve Henson] 2380 2381 *) Allow digests to supply their own micalg string for S/MIME type using 2382 the ctrl EVP_MD_CTRL_MICALG. 2383 [Steve Henson] 2384 2385 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the 2386 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN 2387 ctrl. It can then customise the structure before and/or after signing 2388 if necessary. 2389 [Steve Henson] 2390 2391 *) New function OBJ_add_sigid() to allow application defined signature OIDs 2392 to be added to OpenSSLs internal tables. New function OBJ_sigid_free() 2393 to free up any added signature OIDs. 2394 [Steve Henson] 2395 2396 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(), 2397 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal 2398 digest and cipher tables. New options added to openssl utility: 2399 list-message-digest-algorithms and list-cipher-algorithms. 2400 [Steve Henson] 2401 2402 *) Change the array representation of binary polynomials: the list 2403 of degrees of non-zero coefficients is now terminated with -1. 2404 Previously it was terminated with 0, which was also part of the 2405 value; thus, the array representation was not applicable to 2406 polynomials where t^0 has coefficient zero. This change makes 2407 the array representation useful in a more general context. 2408 [Douglas Stebila] 2409 2410 *) Various modifications and fixes to SSL/TLS cipher string 2411 handling. For ECC, the code now distinguishes between fixed ECDH 2412 with RSA certificates on the one hand and with ECDSA certificates 2413 on the other hand, since these are separate ciphersuites. The 2414 unused code for Fortezza ciphersuites has been removed. 2415 2416 For consistency with EDH, ephemeral ECDH is now called "EECDH" 2417 (not "ECDHE"). For consistency with the code for DH 2418 certificates, use of ECDH certificates is now considered ECDH 2419 authentication, not RSA or ECDSA authentication (the latter is 2420 merely the CA's signing algorithm and not actively used in the 2421 protocol). 2422 2423 The temporary ciphersuite alias "ECCdraft" is no longer 2424 available, and ECC ciphersuites are no longer excluded from "ALL" 2425 and "DEFAULT". The following aliases now exist for RFC 4492 2426 ciphersuites, most of these by analogy with the DH case: 2427 2428 kECDHr - ECDH cert, signed with RSA 2429 kECDHe - ECDH cert, signed with ECDSA 2430 kECDH - ECDH cert (signed with either RSA or ECDSA) 2431 kEECDH - ephemeral ECDH 2432 ECDH - ECDH cert or ephemeral ECDH 2433 2434 aECDH - ECDH cert 2435 aECDSA - ECDSA cert 2436 ECDSA - ECDSA cert 2437 2438 AECDH - anonymous ECDH 2439 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH") 2440 2441 [Bodo Moeller] 2442 2443 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported. 2444 Use correct micalg parameters depending on digest(s) in signed message. 2445 [Steve Henson] 2446 2447 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process 2448 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code. 2449 [Steve Henson] 2450 2451 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit 2452 an engine to register a method. Add ENGINE lookups for methods and 2453 functional reference processing. 2454 [Steve Henson] 2455 2456 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of 2457 EVP_{Sign,Verify}* which allow an application to customise the signature 2458 process. 2459 [Steve Henson] 2460 2461 *) New -resign option to smime utility. This adds one or more signers 2462 to an existing PKCS#7 signedData structure. Also -md option to use an 2463 alternative message digest algorithm for signing. 2464 [Steve Henson] 2465 2466 *) Tidy up PKCS#7 routines and add new functions to make it easier to 2467 create PKCS7 structures containing multiple signers. Update smime 2468 application to support multiple signers. 2469 [Steve Henson] 2470 2471 *) New -macalg option to pkcs12 utility to allow setting of an alternative 2472 digest MAC. 2473 [Steve Henson] 2474 2475 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC. 2476 Reorganize PBE internals to lookup from a static table using NIDs, 2477 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl: 2478 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative 2479 PRF which will be automatically used with PBES2. 2480 [Steve Henson] 2481 2482 *) Replace the algorithm specific calls to generate keys in "req" with the 2483 new API. 2484 [Steve Henson] 2485 2486 *) Update PKCS#7 enveloped data routines to use new API. This is now 2487 supported by any public key method supporting the encrypt operation. A 2488 ctrl is added to allow the public key algorithm to examine or modify 2489 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is 2490 a no op. 2491 [Steve Henson] 2492 2493 *) Add a ctrl to asn1 method to allow a public key algorithm to express 2494 a default digest type to use. In most cases this will be SHA1 but some 2495 algorithms (such as GOST) need to specify an alternative digest. The 2496 return value indicates how strong the prefernce is 1 means optional and 2497 2 is mandatory (that is it is the only supported type). Modify 2498 ASN1_item_sign() to accept a NULL digest argument to indicate it should 2499 use the default md. Update openssl utilities to use the default digest 2500 type for signing if it is not explicitly indicated. 2501 [Steve Henson] 2502 2503 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New 2504 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant 2505 signing method from the key type. This effectively removes the link 2506 between digests and public key types. 2507 [Steve Henson] 2508 2509 *) Add an OID cross reference table and utility functions. Its purpose is to 2510 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1, 2511 rsaEncryption. This will allow some of the algorithm specific hackery 2512 needed to use the correct OID to be removed. 2513 [Steve Henson] 2514 2515 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO 2516 structures for PKCS7_sign(). They are now set up by the relevant public 2517 key ASN1 method. 2518 [Steve Henson] 2519 2520 *) Add provisional EC pkey method with support for ECDSA and ECDH. 2521 [Steve Henson] 2522 2523 *) Add support for key derivation (agreement) in the API, DH method and 2524 pkeyutl. 2525 [Steve Henson] 2526 2527 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support 2528 public and private key formats. As a side effect these add additional 2529 command line functionality not previously available: DSA signatures can be 2530 generated and verified using pkeyutl and DH key support and generation in 2531 pkey, genpkey. 2532 [Steve Henson] 2533 2534 *) BeOS support. 2535 [Oliver Tappe <zooey@hirschkaefer.de>] 2536 2537 *) New make target "install_html_docs" installs HTML renditions of the 2538 manual pages. 2539 [Oliver Tappe <zooey@hirschkaefer.de>] 2540 2541 *) New utility "genpkey" this is analagous to "genrsa" etc except it can 2542 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to 2543 support key and parameter generation and add initial key generation 2544 functionality for RSA. 2545 [Steve Henson] 2546 2547 *) Add functions for main EVP_PKEY_method operations. The undocumented 2548 functions EVP_PKEY_{encrypt,decrypt} have been renamed to 2549 EVP_PKEY_{encrypt,decrypt}_old. 2550 [Steve Henson] 2551 2552 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public 2553 key API, doesn't do much yet. 2554 [Steve Henson] 2555 2556 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about 2557 public key algorithms. New option to openssl utility: 2558 "list-public-key-algorithms" to print out info. 2559 [Steve Henson] 2560 2561 *) Implement the Supported Elliptic Curves Extension for 2562 ECC ciphersuites from draft-ietf-tls-ecc-12.txt. 2563 [Douglas Stebila] 2564 2565 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or 2566 EVP_CIPHER structures to avoid later problems in EVP_cleanup(). 2567 [Steve Henson] 2568 2569 *) New utilities pkey and pkeyparam. These are similar to algorithm specific 2570 utilities such as rsa, dsa, dsaparam etc except they process any key 2571 type. 2572 [Steve Henson] 2573 2574 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New 2575 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(), 2576 EVP_PKEY_print_param() to print public key data from an EVP_PKEY 2577 structure. 2578 [Steve Henson] 2579 2580 *) Initial support for pluggable public key ASN1. 2581 De-spaghettify the public key ASN1 handling. Move public and private 2582 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate 2583 algorithm specific handling to a single module within the relevant 2584 algorithm directory. Add functions to allow (near) opaque processing 2585 of public and private key structures. 2586 [Steve Henson] 2587 2588 *) Implement the Supported Point Formats Extension for 2589 ECC ciphersuites from draft-ietf-tls-ecc-12.txt. 2590 [Douglas Stebila] 2591 2592 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members 2593 for the psk identity [hint] and the psk callback functions to the 2594 SSL_SESSION, SSL and SSL_CTX structure. 2595 2596 New ciphersuites: 2597 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA, 2598 PSK-AES256-CBC-SHA 2599 2600 New functions: 2601 SSL_CTX_use_psk_identity_hint 2602 SSL_get_psk_identity_hint 2603 SSL_get_psk_identity 2604 SSL_use_psk_identity_hint 2605 2606 [Mika Kousa and Pasi Eronen of Nokia Corporation] 2607 2608 *) Add RFC 3161 compliant time stamp request creation, response generation 2609 and response verification functionality. 2610 [Zolt��n Gl��zik <zglozik@opentsa.org>, The OpenTSA Project] 2611 2612 *) Add initial support for TLS extensions, specifically for the server_name 2613 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now 2614 have new members for a host name. The SSL data structure has an 2615 additional member SSL_CTX *initial_ctx so that new sessions can be 2616 stored in that context to allow for session resumption, even after the 2617 SSL has been switched to a new SSL_CTX in reaction to a client's 2618 server_name extension. 2619 2620 New functions (subject to change): 2621 2622 SSL_get_servername() 2623 SSL_get_servername_type() 2624 SSL_set_SSL_CTX() 2625 2626 New CTRL codes and macros (subject to change): 2627 2628 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 2629 - SSL_CTX_set_tlsext_servername_callback() 2630 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 2631 - SSL_CTX_set_tlsext_servername_arg() 2632 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() 2633 2634 openssl s_client has a new '-servername ...' option. 2635 2636 openssl s_server has new options '-servername_host ...', '-cert2 ...', 2637 '-key2 ...', '-servername_fatal' (subject to change). This allows 2638 testing the HostName extension for a specific single host name ('-cert' 2639 and '-key' remain fallbacks for handshakes without HostName 2640 negotiation). If the unrecogninzed_name alert has to be sent, this by 2641 default is a warning; it becomes fatal with the '-servername_fatal' 2642 option. 2643 2644 [Peter Sylvester, Remy Allais, Christophe Renou] 2645 2646 *) Whirlpool hash implementation is added. 2647 [Andy Polyakov] 2648 2649 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to 2650 bn(64,32). Because of instruction set limitations it doesn't have 2651 any negative impact on performance. This was done mostly in order 2652 to make it possible to share assembler modules, such as bn_mul_mont 2653 implementations, between 32- and 64-bit builds without hassle. 2654 [Andy Polyakov] 2655 2656 *) Move code previously exiled into file crypto/ec/ec2_smpt.c 2657 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP 2658 macro. 2659 [Bodo Moeller] 2660 2661 *) New candidate for BIGNUM assembler implementation, bn_mul_mont, 2662 dedicated Montgomery multiplication procedure, is introduced. 2663 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher 2664 "64-bit" performance on certain 32-bit targets. 2665 [Andy Polyakov] 2666 2667 *) New option SSL_OP_NO_COMP to disable use of compression selectively 2668 in SSL structures. New SSL ctrl to set maximum send fragment size. 2669 Save memory by seeting the I/O buffer sizes dynamically instead of 2670 using the maximum available value. 2671 [Steve Henson] 2672 2673 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code 2674 in addition to the text details. 2675 [Bodo Moeller] 2676 2677 *) Very, very preliminary EXPERIMENTAL support for printing of general 2678 ASN1 structures. This currently produces rather ugly output and doesn't 2679 handle several customised structures at all. 2680 [Steve Henson] 2681 2682 *) Integrated support for PVK file format and some related formats such 2683 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support 2684 these in the 'rsa' and 'dsa' utilities. 2685 [Steve Henson] 2686 2687 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line. 2688 [Steve Henson] 2689 2690 *) Remove the ancient ASN1_METHOD code. This was only ever used in one 2691 place for the (very old) "NETSCAPE" format certificates which are now 2692 handled using new ASN1 code equivalents. 2693 [Steve Henson] 2694 2695 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD 2696 pointer and make the SSL_METHOD parameter in SSL_CTX_new, 2697 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'. 2698 [Nils Larsch] 2699 2700 *) Modify CRL distribution points extension code to print out previously 2701 unsupported fields. Enhance extension setting code to allow setting of 2702 all fields. 2703 [Steve Henson] 2704 2705 *) Add print and set support for Issuing Distribution Point CRL extension. 2706 [Steve Henson] 2707 2708 *) Change 'Configure' script to enable Camellia by default. 2709 [NTT] 2710 2711 Changes between 0.9.8m and 0.9.8n [24 Mar 2010] 2712 2713 *) When rejecting SSL/TLS records due to an incorrect version number, never 2714 update s->server with a new major version number. As of 2715 - OpenSSL 0.9.8m if 'short' is a 16-bit type, 2716 - OpenSSL 0.9.8f if 'short' is longer than 16 bits, 2717 the previous behavior could result in a read attempt at NULL when 2718 receiving specific incorrect SSL/TLS records once record payload 2719 protection is active. (CVE-2010-0740) 2720 [Bodo Moeller, Adam Langley <agl@chromium.org>] 2721 2722 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL 2723 could be crashed if the relevant tables were not present (e.g. chrooted). 2724 [Tomas Hoger <thoger@redhat.com>] 2725 2726 Changes between 0.9.8l and 0.9.8m [25 Feb 2010] 2727 2728 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245) 2729 [Martin Olsson, Neel Mehta] 2730 2731 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to 2732 accommodate for stack sorting, always a write lock!). 2733 [Bodo Moeller] 2734 2735 *) On some versions of WIN32 Heap32Next is very slow. This can cause 2736 excessive delays in the RAND_poll(): over a minute. As a workaround 2737 include a time check in the inner Heap32Next loop too. 2738 [Steve Henson] 2739 2740 *) The code that handled flushing of data in SSL/TLS originally used the 2741 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused 2742 the problem outlined in PR#1949. The fix suggested there however can 2743 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions 2744 of Apache). So instead simplify the code to flush unconditionally. 2745 This should be fine since flushing with no data to flush is a no op. 2746 [Steve Henson] 2747 2748 *) Handle TLS versions 2.0 and later properly and correctly use the 2749 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way 2750 off ancient servers have a habit of sticking around for a while... 2751 [Steve Henson] 2752 2753 *) Modify compression code so it frees up structures without using the 2754 ex_data callbacks. This works around a problem where some applications 2755 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when 2756 restarting) then use compression (e.g. SSL with compression) later. 2757 This results in significant per-connection memory leaks and 2758 has caused some security issues including CVE-2008-1678 and 2759 CVE-2009-4355. 2760 [Steve Henson] 2761 2762 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't 2763 change when encrypting or decrypting. 2764 [Bodo Moeller] 2765 2766 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to 2767 connect and renegotiate with servers which do not support RI. 2768 Until RI is more widely deployed this option is enabled by default. 2769 [Steve Henson] 2770 2771 *) Add "missing" ssl ctrls to clear options and mode. 2772 [Steve Henson] 2773 2774 *) If client attempts to renegotiate and doesn't support RI respond with 2775 a no_renegotiation alert as required by RFC5746. Some renegotiating 2776 TLS clients will continue a connection gracefully when they receive 2777 the alert. Unfortunately OpenSSL mishandled this alert and would hang 2778 waiting for a server hello which it will never receive. Now we treat a 2779 received no_renegotiation alert as a fatal error. This is because 2780 applications requesting a renegotiation might well expect it to succeed 2781 and would have no code in place to handle the server denying it so the 2782 only safe thing to do is to terminate the connection. 2783 [Steve Henson] 2784 2785 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if 2786 peer supports secure renegotiation and 0 otherwise. Print out peer 2787 renegotiation support in s_client/s_server. 2788 [Steve Henson] 2789 2790 *) Replace the highly broken and deprecated SPKAC certification method with 2791 the updated NID creation version. This should correctly handle UTF8. 2792 [Steve Henson] 2793 2794 *) Implement RFC5746. Re-enable renegotiation but require the extension 2795 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 2796 turns out to be a bad idea. It has been replaced by 2797 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with 2798 SSL_CTX_set_options(). This is really not recommended unless you 2799 know what you are doing. 2800 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson] 2801 2802 *) Fixes to stateless session resumption handling. Use initial_ctx when 2803 issuing and attempting to decrypt tickets in case it has changed during 2804 servername handling. Use a non-zero length session ID when attempting 2805 stateless session resumption: this makes it possible to determine if 2806 a resumption has occurred immediately after receiving server hello 2807 (several places in OpenSSL subtly assume this) instead of later in 2808 the handshake. 2809 [Steve Henson] 2810 2811 *) The functions ENGINE_ctrl(), OPENSSL_isservice(), 2812 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error 2813 fixes for a few places where the return code is not checked 2814 correctly. 2815 [Julia Lawall <julia@diku.dk>] 2816 2817 *) Add --strict-warnings option to Configure script to include devteam 2818 warnings in other configurations. 2819 [Steve Henson] 2820 2821 *) Add support for --libdir option and LIBDIR variable in makefiles. This 2822 makes it possible to install openssl libraries in locations which 2823 have names other than "lib", for example "/usr/lib64" which some 2824 systems need. 2825 [Steve Henson, based on patch from Jeremy Utley] 2826 2827 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of 2828 X690 8.9.12 and can produce some misleading textual output of OIDs. 2829 [Steve Henson, reported by Dan Kaminsky] 2830 2831 *) Delete MD2 from algorithm tables. This follows the recommendation in 2832 several standards that it is not used in new applications due to 2833 several cryptographic weaknesses. For binary compatibility reasons 2834 the MD2 API is still compiled in by default. 2835 [Steve Henson] 2836 2837 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved 2838 and restored. 2839 [Steve Henson] 2840 2841 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and 2842 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name 2843 clash. 2844 [Guenter <lists@gknw.net>] 2845 2846 *) Fix the server certificate chain building code to use X509_verify_cert(), 2847 it used to have an ad-hoc builder which was unable to cope with anything 2848 other than a simple chain. 2849 [David Woodhouse <dwmw2@infradead.org>, Steve Henson] 2850 2851 *) Don't check self signed certificate signatures in X509_verify_cert() 2852 by default (a flag can override this): it just wastes time without 2853 adding any security. As a useful side effect self signed root CAs 2854 with non-FIPS digests are now usable in FIPS mode. 2855 [Steve Henson] 2856 2857 *) In dtls1_process_out_of_seq_message() the check if the current message 2858 is already buffered was missing. For every new message was memory 2859 allocated, allowing an attacker to perform an denial of service attack 2860 with sending out of seq handshake messages until there is no memory 2861 left. Additionally every future messege was buffered, even if the 2862 sequence number made no sense and would be part of another handshake. 2863 So only messages with sequence numbers less than 10 in advance will be 2864 buffered. (CVE-2009-1378) 2865 [Robin Seggelmann, discovered by Daniel Mentz] 2866 2867 *) Records are buffered if they arrive with a future epoch to be 2868 processed after finishing the corresponding handshake. There is 2869 currently no limitation to this buffer allowing an attacker to perform 2870 a DOS attack with sending records with future epochs until there is no 2871 memory left. This patch adds the pqueue_size() function to detemine 2872 the size of a buffer and limits the record buffer to 100 entries. 2873 (CVE-2009-1377) 2874 [Robin Seggelmann, discovered by Daniel Mentz] 2875 2876 *) Keep a copy of frag->msg_header.frag_len so it can be used after the 2877 parent structure is freed. (CVE-2009-1379) 2878 [Daniel Mentz] 2879 2880 *) Handle non-blocking I/O properly in SSL_shutdown() call. 2881 [Darryl Miles <darryl-mailinglists@netbauds.net>] 2882 2883 *) Add 2.5.4.* OIDs 2884 [Ilya O. <vrghost@gmail.com>] 2885 2886 Changes between 0.9.8k and 0.9.8l [5 Nov 2009] 2887 2888 *) Disable renegotiation completely - this fixes a severe security 2889 problem (CVE-2009-3555) at the cost of breaking all 2890 renegotiation. Renegotiation can be re-enabled by setting 2891 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at 2892 run-time. This is really not recommended unless you know what 2893 you're doing. 2894 [Ben Laurie] 2895 2896 Changes between 0.9.8j and 0.9.8k [25 Mar 2009] 2897 2898 *) Don't set val to NULL when freeing up structures, it is freed up by 2899 underlying code. If sizeof(void *) > sizeof(long) this can result in 2900 zeroing past the valid field. (CVE-2009-0789) 2901 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>] 2902 2903 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not 2904 checked correctly. This would allow some invalid signed attributes to 2905 appear to verify correctly. (CVE-2009-0591) 2906 [Ivan Nestlerode <inestlerode@us.ibm.com>] 2907 2908 *) Reject UniversalString and BMPString types with invalid lengths. This 2909 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have 2910 a legal length. (CVE-2009-0590) 2911 [Steve Henson] 2912 2913 *) Set S/MIME signing as the default purpose rather than setting it 2914 unconditionally. This allows applications to override it at the store 2915 level. 2916 [Steve Henson] 2917 2918 *) Permit restricted recursion of ASN1 strings. This is needed in practice 2919 to handle some structures. 2920 [Steve Henson] 2921 2922 *) Improve efficiency of mem_gets: don't search whole buffer each time 2923 for a '\n' 2924 [Jeremy Shapiro <jnshapir@us.ibm.com>] 2925 2926 *) New -hex option for openssl rand. 2927 [Matthieu Herrb] 2928 2929 *) Print out UTF8String and NumericString when parsing ASN1. 2930 [Steve Henson] 2931 2932 *) Support NumericString type for name components. 2933 [Steve Henson] 2934 2935 *) Allow CC in the environment to override the automatically chosen 2936 compiler. Note that nothing is done to ensure flags work with the 2937 chosen compiler. 2938 [Ben Laurie] 2939 2940 Changes between 0.9.8i and 0.9.8j [07 Jan 2009] 2941 2942 *) Properly check EVP_VerifyFinal() and similar return values 2943 (CVE-2008-5077). 2944 [Ben Laurie, Bodo Moeller, Google Security Team] 2945 2946 *) Enable TLS extensions by default. 2947 [Ben Laurie] 2948 2949 *) Allow the CHIL engine to be loaded, whether the application is 2950 multithreaded or not. (This does not release the developer from the 2951 obligation to set up the dynamic locking callbacks.) 2952 [Sander Temme <sander@temme.net>] 2953 2954 *) Use correct exit code if there is an error in dgst command. 2955 [Steve Henson; problem pointed out by Roland Dirlewanger] 2956 2957 *) Tweak Configure so that you need to say "experimental-jpake" to enable 2958 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications. 2959 [Bodo Moeller] 2960 2961 *) Add experimental JPAKE support, including demo authentication in 2962 s_client and s_server. 2963 [Ben Laurie] 2964 2965 *) Set the comparison function in v3_addr_canonize(). 2966 [Rob Austein <sra@hactrn.net>] 2967 2968 *) Add support for XMPP STARTTLS in s_client. 2969 [Philip Paeps <philip@freebsd.org>] 2970 2971 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior 2972 to ensure that even with this option, only ciphersuites in the 2973 server's preference list will be accepted. (Note that the option 2974 applies only when resuming a session, so the earlier behavior was 2975 just about the algorithm choice for symmetric cryptography.) 2976 [Bodo Moeller] 2977 2978 Changes between 0.9.8h and 0.9.8i [15 Sep 2008] 2979 2980 *) Fix NULL pointer dereference if a DTLS server received 2981 ChangeCipherSpec as first record (CVE-2009-1386). 2982 [PR #1679] 2983 2984 *) Fix a state transitition in s3_srvr.c and d1_srvr.c 2985 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...). 2986 [Nagendra Modadugu] 2987 2988 *) The fix in 0.9.8c that supposedly got rid of unsafe 2989 double-checked locking was incomplete for RSA blinding, 2990 addressing just one layer of what turns out to have been 2991 doubly unsafe triple-checked locking. 2992 2993 So now fix this for real by retiring the MONT_HELPER macro 2994 in crypto/rsa/rsa_eay.c. 2995 2996 [Bodo Moeller; problem pointed out by Marius Schilder] 2997 2998 *) Various precautionary measures: 2999 3000 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h). 3001 3002 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c). 3003 (NB: This would require knowledge of the secret session ticket key 3004 to exploit, in which case you'd be SOL either way.) 3005 3006 - Change bn_nist.c so that it will properly handle input BIGNUMs 3007 outside the expected range. 3008 3009 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG 3010 builds. 3011 3012 [Neel Mehta, Bodo Moeller] 3013 3014 *) Allow engines to be "soft loaded" - i.e. optionally don't die if 3015 the load fails. Useful for distros. 3016 [Ben Laurie and the FreeBSD team] 3017 3018 *) Add support for Local Machine Keyset attribute in PKCS#12 files. 3019 [Steve Henson] 3020 3021 *) Fix BN_GF2m_mod_arr() top-bit cleanup code. 3022 [Huang Ying] 3023 3024 *) Expand ENGINE to support engine supplied SSL client certificate functions. 3025 3026 This work was sponsored by Logica. 3027 [Steve Henson] 3028 3029 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows 3030 keystores. Support for SSL/TLS client authentication too. 3031 Not compiled unless enable-capieng specified to Configure. 3032 3033 This work was sponsored by Logica. 3034 [Steve Henson] 3035 3036 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using 3037 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain 3038 attribute creation routines such as certifcate requests and PKCS#12 3039 files. 3040 [Steve Henson] 3041 3042 Changes between 0.9.8g and 0.9.8h [28 May 2008] 3043 3044 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS 3045 handshake which could lead to a cilent crash as found using the 3046 Codenomicon TLS test suite (CVE-2008-1672) 3047 [Steve Henson, Mark Cox] 3048 3049 *) Fix double free in TLS server name extensions which could lead to 3050 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891) 3051 [Joe Orton] 3052 3053 *) Clear error queue in SSL_CTX_use_certificate_chain_file() 3054 3055 Clear the error queue to ensure that error entries left from 3056 older function calls do not interfere with the correct operation. 3057 [Lutz Jaenicke, Erik de Castro Lopo] 3058 3059 *) Remove root CA certificates of commercial CAs: 3060 3061 The OpenSSL project does not recommend any specific CA and does not 3062 have any policy with respect to including or excluding any CA. 3063 Therefore it does not make any sense to ship an arbitrary selection 3064 of root CA certificates with the OpenSSL software. 3065 [Lutz Jaenicke] 3066 3067 *) RSA OAEP patches to fix two separate invalid memory reads. 3068 The first one involves inputs when 'lzero' is greater than 3069 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes 3070 before the beginning of from). The second one involves inputs where 3071 the 'db' section contains nothing but zeroes (there is a one-byte 3072 invalid read after the end of 'db'). 3073 [Ivan Nestlerode <inestlerode@us.ibm.com>] 3074 3075 *) Partial backport from 0.9.9-dev: 3076 3077 Introduce bn_mul_mont (dedicated Montgomery multiplication 3078 procedure) as a candidate for BIGNUM assembler implementation. 3079 While 0.9.9-dev uses assembler for various architectures, only 3080 x86_64 is available by default here in the 0.9.8 branch, and 3081 32-bit x86 is available through a compile-time setting. 3082 3083 To try the 32-bit x86 assembler implementation, use Configure 3084 option "enable-montasm" (which exists only for this backport). 3085 3086 As "enable-montasm" for 32-bit x86 disclaims code stability 3087 anyway, in this constellation we activate additional code 3088 backported from 0.9.9-dev for further performance improvements, 3089 namely BN_from_montgomery_word. (To enable this otherwise, 3090 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".) 3091 3092 [Andy Polyakov (backport partially by Bodo Moeller)] 3093 3094 *) Add TLS session ticket callback. This allows an application to set 3095 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed 3096 values. This is useful for key rollover for example where several key 3097 sets may exist with different names. 3098 [Steve Henson] 3099 3100 *) Reverse ENGINE-internal logic for caching default ENGINE handles. 3101 This was broken until now in 0.9.8 releases, such that the only way 3102 a registered ENGINE could be used (assuming it initialises 3103 successfully on the host) was to explicitly set it as the default 3104 for the relevant algorithms. This is in contradiction with 0.9.7 3105 behaviour and the documentation. With this fix, when an ENGINE is 3106 registered into a given algorithm's table of implementations, the 3107 'uptodate' flag is reset so that auto-discovery will be used next 3108 time a new context for that algorithm attempts to select an 3109 implementation. 3110 [Ian Lister (tweaked by Geoff Thorpe)] 3111 3112 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9 3113 implemention in the following ways: 3114 3115 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be 3116 hard coded. 3117 3118 Lack of BER streaming support means one pass streaming processing is 3119 only supported if data is detached: setting the streaming flag is 3120 ignored for embedded content. 3121 3122 CMS support is disabled by default and must be explicitly enabled 3123 with the enable-cms configuration option. 3124 [Steve Henson] 3125 3126 *) Update the GMP engine glue to do direct copies between BIGNUM and 3127 mpz_t when openssl and GMP use the same limb size. Otherwise the 3128 existing "conversion via a text string export" trick is still used. 3129 [Paul Sheer <paulsheer@gmail.com>] 3130 3131 *) Zlib compression BIO. This is a filter BIO which compressed and 3132 uncompresses any data passed through it. 3133 [Steve Henson] 3134 3135 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement 3136 RFC3394 compatible AES key wrapping. 3137 [Steve Henson] 3138 3139 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0(): 3140 sets string data without copying. X509_ALGOR_set0() and 3141 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier) 3142 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data 3143 from an X509_ATTRIBUTE structure optionally checking it occurs only 3144 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied 3145 data. 3146 [Steve Henson] 3147 3148 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set() 3149 to get the expected BN_FLG_CONSTTIME behavior. 3150 [Bodo Moeller (Google)] 3151 3152 *) Netware support: 3153 3154 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets 3155 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT) 3156 - added some more tests to do_tests.pl 3157 - fixed RunningProcess usage so that it works with newer LIBC NDKs too 3158 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency 3159 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc, 3160 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc 3161 - various changes to netware.pl to enable gcc-cross builds on Win32 3162 platform 3163 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD) 3164 - various changes to fix missing prototype warnings 3165 - fixed x86nasm.pl to create correct asm files for NASM COFF output 3166 - added AES, WHIRLPOOL and CPUID assembler code to build files 3167 - added missing AES assembler make rules to mk1mf.pl 3168 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply 3169 [Guenter Knauf <eflash@gmx.net>] 3170 3171 *) Implement certificate status request TLS extension defined in RFC3546. 3172 A client can set the appropriate parameters and receive the encoded 3173 OCSP response via a callback. A server can query the supplied parameters 3174 and set the encoded OCSP response in the callback. Add simplified examples 3175 to s_client and s_server. 3176 [Steve Henson] 3177 3178 Changes between 0.9.8f and 0.9.8g [19 Oct 2007] 3179 3180 *) Fix various bugs: 3181 + Binary incompatibility of ssl_ctx_st structure 3182 + DTLS interoperation with non-compliant servers 3183 + Don't call get_session_cb() without proposed session 3184 + Fix ia64 assembler code 3185 [Andy Polyakov, Steve Henson] 3186 3187 Changes between 0.9.8e and 0.9.8f [11 Oct 2007] 3188 3189 *) DTLS Handshake overhaul. There were longstanding issues with 3190 OpenSSL DTLS implementation, which were making it impossible for 3191 RFC 4347 compliant client to communicate with OpenSSL server. 3192 Unfortunately just fixing these incompatibilities would "cut off" 3193 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e 3194 server keeps tolerating non RFC compliant syntax. The opposite is 3195 not true, 0.9.8f client can not communicate with earlier server. 3196 This update even addresses CVE-2007-4995. 3197 [Andy Polyakov] 3198 3199 *) Changes to avoid need for function casts in OpenSSL: some compilers 3200 (gcc 4.2 and later) reject their use. 3201 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>, 3202 Steve Henson] 3203 3204 *) Add RFC4507 support to OpenSSL. This includes the corrections in 3205 RFC4507bis. The encrypted ticket format is an encrypted encoded 3206 SSL_SESSION structure, that way new session features are automatically 3207 supported. 3208 3209 If a client application caches session in an SSL_SESSION structure 3210 support is transparent because tickets are now stored in the encoded 3211 SSL_SESSION. 3212 3213 The SSL_CTX structure automatically generates keys for ticket 3214 protection in servers so again support should be possible 3215 with no application modification. 3216 3217 If a client or server wishes to disable RFC4507 support then the option 3218 SSL_OP_NO_TICKET can be set. 3219 3220 Add a TLS extension debugging callback to allow the contents of any client 3221 or server extensions to be examined. 3222 3223 This work was sponsored by Google. 3224 [Steve Henson] 3225 3226 *) Add initial support for TLS extensions, specifically for the server_name 3227 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now 3228 have new members for a host name. The SSL data structure has an 3229 additional member SSL_CTX *initial_ctx so that new sessions can be 3230 stored in that context to allow for session resumption, even after the 3231 SSL has been switched to a new SSL_CTX in reaction to a client's 3232 server_name extension. 3233 3234 New functions (subject to change): 3235 3236 SSL_get_servername() 3237 SSL_get_servername_type() 3238 SSL_set_SSL_CTX() 3239 3240 New CTRL codes and macros (subject to change): 3241 3242 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 3243 - SSL_CTX_set_tlsext_servername_callback() 3244 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 3245 - SSL_CTX_set_tlsext_servername_arg() 3246 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() 3247 3248 openssl s_client has a new '-servername ...' option. 3249 3250 openssl s_server has new options '-servername_host ...', '-cert2 ...', 3251 '-key2 ...', '-servername_fatal' (subject to change). This allows 3252 testing the HostName extension for a specific single host name ('-cert' 3253 and '-key' remain fallbacks for handshakes without HostName 3254 negotiation). If the unrecogninzed_name alert has to be sent, this by 3255 default is a warning; it becomes fatal with the '-servername_fatal' 3256 option. 3257 3258 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson] 3259 3260 *) Add AES and SSE2 assembly language support to VC++ build. 3261 [Steve Henson] 3262 3263 *) Mitigate attack on final subtraction in Montgomery reduction. 3264 [Andy Polyakov] 3265 3266 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0 3267 (which previously caused an internal error). 3268 [Bodo Moeller] 3269 3270 *) Squeeze another 10% out of IGE mode when in != out. 3271 [Ben Laurie] 3272 3273 *) AES IGE mode speedup. 3274 [Dean Gaudet (Google)] 3275 3276 *) Add the Korean symmetric 128-bit cipher SEED (see 3277 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and 3278 add SEED ciphersuites from RFC 4162: 3279 3280 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA" 3281 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA" 3282 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA" 3283 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA" 3284 3285 To minimize changes between patchlevels in the OpenSSL 0.9.8 3286 series, SEED remains excluded from compilation unless OpenSSL 3287 is configured with 'enable-seed'. 3288 [KISA, Bodo Moeller] 3289 3290 *) Mitigate branch prediction attacks, which can be practical if a 3291 single processor is shared, allowing a spy process to extract 3292 information. For detailed background information, see 3293 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron, 3294 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL 3295 and Necessary Software Countermeasures"). The core of the change 3296 are new versions BN_div_no_branch() and 3297 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(), 3298 respectively, which are slower, but avoid the security-relevant 3299 conditional branches. These are automatically called by BN_div() 3300 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one 3301 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to 3302 remove a conditional branch. 3303 3304 BN_FLG_CONSTTIME is the new name for the previous 3305 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just 3306 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag 3307 in the exponent causes BN_mod_exp_mont() to use the alternative 3308 implementation in BN_mod_exp_mont_consttime().) The old name 3309 remains as a deprecated alias. 3310 3311 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general 3312 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses 3313 constant-time implementations for more than just exponentiation. 3314 Here too the old name is kept as a deprecated alias. 3315 3316 BN_BLINDING_new() will now use BN_dup() for the modulus so that 3317 the BN_BLINDING structure gets an independent copy of the 3318 modulus. This means that the previous "BIGNUM *m" argument to 3319 BN_BLINDING_new() and to BN_BLINDING_create_param() now 3320 essentially becomes "const BIGNUM *m", although we can't actually 3321 change this in the header file before 0.9.9. It allows 3322 RSA_setup_blinding() to use BN_with_flags() on the modulus to 3323 enable BN_FLG_CONSTTIME. 3324 3325 [Matthew D Wood (Intel Corp)] 3326 3327 *) In the SSL/TLS server implementation, be strict about session ID 3328 context matching (which matters if an application uses a single 3329 external cache for different purposes). Previously, 3330 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was 3331 set. This did ensure strict client verification, but meant that, 3332 with applications using a single external cache for quite 3333 different requirements, clients could circumvent ciphersuite 3334 restrictions for a given session ID context by starting a session 3335 in a different context. 3336 [Bodo Moeller] 3337 3338 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that 3339 a ciphersuite string such as "DEFAULT:RSA" cannot enable 3340 authentication-only ciphersuites. 3341 [Bodo Moeller] 3342 3343 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was 3344 not complete and could lead to a possible single byte overflow 3345 (CVE-2007-5135) [Ben Laurie] 3346 3347 Changes between 0.9.8d and 0.9.8e [23 Feb 2007] 3348 3349 *) Since AES128 and AES256 (and similarly Camellia128 and 3350 Camellia256) share a single mask bit in the logic of 3351 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a 3352 kludge to work properly if AES128 is available and AES256 isn't 3353 (or if Camellia128 is available and Camellia256 isn't). 3354 [Victor Duchovni] 3355 3356 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c 3357 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters): 3358 When a point or a seed is encoded in a BIT STRING, we need to 3359 prevent the removal of trailing zero bits to get the proper DER 3360 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case 3361 of a NamedBitList, for which trailing 0 bits need to be removed.) 3362 [Bodo Moeller] 3363 3364 *) Have SSL/TLS server implementation tolerate "mismatched" record 3365 protocol version while receiving ClientHello even if the 3366 ClientHello is fragmented. (The server can't insist on the 3367 particular protocol version it has chosen before the ServerHello 3368 message has informed the client about his choice.) 3369 [Bodo Moeller] 3370 3371 *) Add RFC 3779 support. 3372 [Rob Austein for ARIN, Ben Laurie] 3373 3374 *) Load error codes if they are not already present instead of using a 3375 static variable. This allows them to be cleanly unloaded and reloaded. 3376 Improve header file function name parsing. 3377 [Steve Henson] 3378 3379 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO 3380 or CAPABILITY handshake as required by RFCs. 3381 [Goetz Babin-Ebell] 3382 3383 Changes between 0.9.8c and 0.9.8d [28 Sep 2006] 3384 3385 *) Introduce limits to prevent malicious keys being able to 3386 cause a denial of service. (CVE-2006-2940) 3387 [Steve Henson, Bodo Moeller] 3388 3389 *) Fix ASN.1 parsing of certain invalid structures that can result 3390 in a denial of service. (CVE-2006-2937) [Steve Henson] 3391 3392 *) Fix buffer overflow in SSL_get_shared_ciphers() function. 3393 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] 3394 3395 *) Fix SSL client code which could crash if connecting to a 3396 malicious SSLv2 server. (CVE-2006-4343) 3397 [Tavis Ormandy and Will Drewry, Google Security Team] 3398 3399 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites 3400 match only those. Before that, "AES256-SHA" would be interpreted 3401 as a pattern and match "AES128-SHA" too (since AES128-SHA got 3402 the same strength classification in 0.9.7h) as we currently only 3403 have a single AES bit in the ciphersuite description bitmap. 3404 That change, however, also applied to ciphersuite strings such as 3405 "RC4-MD5" that intentionally matched multiple ciphersuites -- 3406 namely, SSL 2.0 ciphersuites in addition to the more common ones 3407 from SSL 3.0/TLS 1.0. 3408 3409 So we change the selection algorithm again: Naming an explicit 3410 ciphersuite selects this one ciphersuite, and any other similar 3411 ciphersuite (same bitmap) from *other* protocol versions. 3412 Thus, "RC4-MD5" again will properly select both the SSL 2.0 3413 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite. 3414 3415 Since SSL 2.0 does not have any ciphersuites for which the 3416 128/256 bit distinction would be relevant, this works for now. 3417 The proper fix will be to use different bits for AES128 and 3418 AES256, which would have avoided the problems from the beginning; 3419 however, bits are scarce, so we can only do this in a new release 3420 (not just a patchlevel) when we can change the SSL_CIPHER 3421 definition to split the single 'unsigned long mask' bitmap into 3422 multiple values to extend the available space. 3423 3424 [Bodo Moeller] 3425 3426 Changes between 0.9.8b and 0.9.8c [05 Sep 2006] 3427 3428 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher 3429 (CVE-2006-4339) [Ben Laurie and Google Security Team] 3430 3431 *) Add AES IGE and biIGE modes. 3432 [Ben Laurie] 3433 3434 *) Change the Unix randomness entropy gathering to use poll() when 3435 possible instead of select(), since the latter has some 3436 undesirable limitations. 3437 [Darryl Miles via Richard Levitte and Bodo Moeller] 3438 3439 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special 3440 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites 3441 cannot be implicitly activated as part of, e.g., the "AES" alias. 3442 However, please upgrade to OpenSSL 0.9.9[-dev] for 3443 non-experimental use of the ECC ciphersuites to get TLS extension 3444 support, which is required for curve and point format negotiation 3445 to avoid potential handshake problems. 3446 [Bodo Moeller] 3447 3448 *) Disable rogue ciphersuites: 3449 3450 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") 3451 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") 3452 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") 3453 3454 The latter two were purportedly from 3455 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really 3456 appear there. 3457 3458 Also deactivate the remaining ciphersuites from 3459 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as 3460 unofficial, and the ID has long expired. 3461 [Bodo Moeller] 3462 3463 *) Fix RSA blinding Heisenbug (problems sometimes occured on 3464 dual-core machines) and other potential thread-safety issues. 3465 [Bodo Moeller] 3466 3467 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key 3468 versions), which is now available for royalty-free use 3469 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html). 3470 Also, add Camellia TLS ciphersuites from RFC 4132. 3471 3472 To minimize changes between patchlevels in the OpenSSL 0.9.8 3473 series, Camellia remains excluded from compilation unless OpenSSL 3474 is configured with 'enable-camellia'. 3475 [NTT] 3476 3477 *) Disable the padding bug check when compression is in use. The padding 3478 bug check assumes the first packet is of even length, this is not 3479 necessarily true if compresssion is enabled and can result in false 3480 positives causing handshake failure. The actual bug test is ancient 3481 code so it is hoped that implementations will either have fixed it by 3482 now or any which still have the bug do not support compression. 3483 [Steve Henson] 3484 3485 Changes between 0.9.8a and 0.9.8b [04 May 2006] 3486 3487 *) When applying a cipher rule check to see if string match is an explicit 3488 cipher suite and only match that one cipher suite if it is. 3489 [Steve Henson] 3490 3491 *) Link in manifests for VC++ if needed. 3492 [Austin Ziegler <halostatue@gmail.com>] 3493 3494 *) Update support for ECC-based TLS ciphersuites according to 3495 draft-ietf-tls-ecc-12.txt with proposed changes (but without 3496 TLS extensions, which are supported starting with the 0.9.9 3497 branch, not in the OpenSSL 0.9.8 branch). 3498 [Douglas Stebila] 3499 3500 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support 3501 opaque EVP_CIPHER_CTX handling. 3502 [Steve Henson] 3503 3504 *) Fixes and enhancements to zlib compression code. We now only use 3505 "zlib1.dll" and use the default __cdecl calling convention on Win32 3506 to conform with the standards mentioned here: 3507 http://www.zlib.net/DLL_FAQ.txt 3508 Static zlib linking now works on Windows and the new --with-zlib-include 3509 --with-zlib-lib options to Configure can be used to supply the location 3510 of the headers and library. Gracefully handle case where zlib library 3511 can't be loaded. 3512 [Steve Henson] 3513 3514 *) Several fixes and enhancements to the OID generation code. The old code 3515 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't 3516 handle numbers larger than ULONG_MAX, truncated printing and had a 3517 non standard OBJ_obj2txt() behaviour. 3518 [Steve Henson] 3519 3520 *) Add support for building of engines under engine/ as shared libraries 3521 under VC++ build system. 3522 [Steve Henson] 3523 3524 *) Corrected the numerous bugs in the Win32 path splitter in DSO. 3525 Hopefully, we will not see any false combination of paths any more. 3526 [Richard Levitte] 3527 3528 Changes between 0.9.8 and 0.9.8a [11 Oct 2005] 3529 3530 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING 3531 (part of SSL_OP_ALL). This option used to disable the 3532 countermeasure against man-in-the-middle protocol-version 3533 rollback in the SSL 2.0 server implementation, which is a bad 3534 idea. (CVE-2005-2969) 3535 3536 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center 3537 for Information Security, National Institute of Advanced Industrial 3538 Science and Technology [AIST], Japan)] 3539 3540 *) Add two function to clear and return the verify parameter flags. 3541 [Steve Henson] 3542 3543 *) Keep cipherlists sorted in the source instead of sorting them at 3544 runtime, thus removing the need for a lock. 3545 [Nils Larsch] 3546 3547 *) Avoid some small subgroup attacks in Diffie-Hellman. 3548 [Nick Mathewson and Ben Laurie] 3549 3550 *) Add functions for well-known primes. 3551 [Nick Mathewson] 3552 3553 *) Extended Windows CE support. 3554 [Satoshi Nakamura and Andy Polyakov] 3555 3556 *) Initialize SSL_METHOD structures at compile time instead of during 3557 runtime, thus removing the need for a lock. 3558 [Steve Henson] 3559 3560 *) Make PKCS7_decrypt() work even if no certificate is supplied by 3561 attempting to decrypt each encrypted key in turn. Add support to 3562 smime utility. 3563 [Steve Henson] 3564 3565 Changes between 0.9.7h and 0.9.8 [05 Jul 2005] 3566 3567 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after 3568 OpenSSL 0.9.8.] 3569 3570 *) Add libcrypto.pc and libssl.pc for those who feel they need them. 3571 [Richard Levitte] 3572 3573 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private 3574 key into the same file any more. 3575 [Richard Levitte] 3576 3577 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors. 3578 [Andy Polyakov] 3579 3580 *) Add -utf8 command line and config file option to 'ca'. 3581 [Stefan <stf@udoma.org] 3582 3583 *) Removed the macro des_crypt(), as it seems to conflict with some 3584 libraries. Use DES_crypt(). 3585 [Richard Levitte] 3586 3587 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This 3588 involves renaming the source and generated shared-libs for 3589 both. The engines will accept the corrected or legacy ids 3590 ('ncipher' and '4758_cca' respectively) when binding. NB, 3591 this only applies when building 'shared'. 3592 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe] 3593 3594 *) Add attribute functions to EVP_PKEY structure. Modify 3595 PKCS12_create() to recognize a CSP name attribute and 3596 use it. Make -CSP option work again in pkcs12 utility. 3597 [Steve Henson] 3598 3599 *) Add new functionality to the bn blinding code: 3600 - automatic re-creation of the BN_BLINDING parameters after 3601 a fixed number of uses (currently 32) 3602 - add new function for parameter creation 3603 - introduce flags to control the update behaviour of the 3604 BN_BLINDING parameters 3605 - hide BN_BLINDING structure 3606 Add a second BN_BLINDING slot to the RSA structure to improve 3607 performance when a single RSA object is shared among several 3608 threads. 3609 [Nils Larsch] 3610 3611 *) Add support for DTLS. 3612 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie] 3613 3614 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1) 3615 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file() 3616 [Walter Goulet] 3617 3618 *) Remove buggy and incompletet DH cert support from 3619 ssl/ssl_rsa.c and ssl/s3_both.c 3620 [Nils Larsch] 3621 3622 *) Use SHA-1 instead of MD5 as the default digest algorithm for 3623 the apps/openssl applications. 3624 [Nils Larsch] 3625 3626 *) Compile clean with "-Wall -Wmissing-prototypes 3627 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently 3628 DEBUG_SAFESTACK must also be set. 3629 [Ben Laurie] 3630 3631 *) Change ./Configure so that certain algorithms can be disabled by default. 3632 The new counterpiece to "no-xxx" is "enable-xxx". 3633 3634 The patented RC5 and MDC2 algorithms will now be disabled unless 3635 "enable-rc5" and "enable-mdc2", respectively, are specified. 3636 3637 (IDEA remains enabled despite being patented. This is because IDEA 3638 is frequently required for interoperability, and there is no license 3639 fee for non-commercial use. As before, "no-idea" can be used to 3640 avoid this algorithm.) 3641 3642 [Bodo Moeller] 3643 3644 *) Add processing of proxy certificates (see RFC 3820). This work was 3645 sponsored by KTH (The Royal Institute of Technology in Stockholm) and 3646 EGEE (Enabling Grids for E-science in Europe). 3647 [Richard Levitte] 3648 3649 *) RC4 performance overhaul on modern architectures/implementations, such 3650 as Intel P4, IA-64 and AMD64. 3651 [Andy Polyakov] 3652 3653 *) New utility extract-section.pl. This can be used specify an alternative 3654 section number in a pod file instead of having to treat each file as 3655 a separate case in Makefile. This can be done by adding two lines to the 3656 pod file: 3657 3658 =for comment openssl_section:XXX 3659 3660 The blank line is mandatory. 3661 3662 [Steve Henson] 3663 3664 *) New arguments -certform, -keyform and -pass for s_client and s_server 3665 to allow alternative format key and certificate files and passphrase 3666 sources. 3667 [Steve Henson] 3668 3669 *) New structure X509_VERIFY_PARAM which combines current verify parameters, 3670 update associated structures and add various utility functions. 3671 3672 Add new policy related verify parameters, include policy checking in 3673 standard verify code. Enhance 'smime' application with extra parameters 3674 to support policy checking and print out. 3675 [Steve Henson] 3676 3677 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3 3678 Nehemiah processors. These extensions support AES encryption in hardware 3679 as well as RNG (though RNG support is currently disabled). 3680 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov] 3681 3682 *) Deprecate BN_[get|set]_params() functions (they were ignored internally). 3683 [Geoff Thorpe] 3684 3685 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented. 3686 [Andy Polyakov and a number of other people] 3687 3688 *) Improved PowerPC platform support. Most notably BIGNUM assembler 3689 implementation contributed by IBM. 3690 [Suresh Chari, Peter Waltenberg, Andy Polyakov] 3691 3692 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public 3693 exponent rather than 'unsigned long'. There is a corresponding change to 3694 the new 'rsa_keygen' element of the RSA_METHOD structure. 3695 [Jelte Jansen, Geoff Thorpe] 3696 3697 *) Functionality for creating the initial serial number file is now 3698 moved from CA.pl to the 'ca' utility with a new option -create_serial. 3699 3700 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial 3701 number file to 1, which is bound to cause problems. To avoid 3702 the problems while respecting compatibility between different 0.9.7 3703 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in 3704 CA.pl for serial number initialization. With the new release 0.9.8, 3705 we can fix the problem directly in the 'ca' utility.) 3706 [Steve Henson] 3707 3708 *) Reduced header interdepencies by declaring more opaque objects in 3709 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will 3710 give fewer recursive includes, which could break lazy source code - so 3711 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always, 3712 developers should define this symbol when building and using openssl to 3713 ensure they track the recommended behaviour, interfaces, [etc], but 3714 backwards-compatible behaviour prevails when this isn't defined. 3715 [Geoff Thorpe] 3716 3717 *) New function X509_POLICY_NODE_print() which prints out policy nodes. 3718 [Steve Henson] 3719 3720 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality. 3721 This will generate a random key of the appropriate length based on the 3722 cipher context. The EVP_CIPHER can provide its own random key generation 3723 routine to support keys of a specific form. This is used in the des and 3724 3des routines to generate a key of the correct parity. Update S/MIME 3725 code to use new functions and hence generate correct parity DES keys. 3726 Add EVP_CHECK_DES_KEY #define to return an error if the key is not 3727 valid (weak or incorrect parity). 3728 [Steve Henson] 3729 3730 *) Add a local set of CRLs that can be used by X509_verify_cert() as well 3731 as looking them up. This is useful when the verified structure may contain 3732 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs 3733 present unless the new PKCS7_NO_CRL flag is asserted. 3734 [Steve Henson] 3735 3736 *) Extend ASN1 oid configuration module. It now additionally accepts the 3737 syntax: 3738 3739 shortName = some long name, 1.2.3.4 3740 [Steve Henson] 3741 3742 *) Reimplemented the BN_CTX implementation. There is now no more static 3743 limitation on the number of variables it can handle nor the depth of the 3744 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack 3745 information can now expand as required, and rather than having a single 3746 static array of bignums, BN_CTX now uses a linked-list of such arrays 3747 allowing it to expand on demand whilst maintaining the usefulness of 3748 BN_CTX's "bundling". 3749 [Geoff Thorpe] 3750 3751 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD 3752 to allow all RSA operations to function using a single BN_CTX. 3753 [Geoff Thorpe] 3754 3755 *) Preliminary support for certificate policy evaluation and checking. This 3756 is initially intended to pass the tests outlined in "Conformance Testing 3757 of Relying Party Client Certificate Path Processing Logic" v1.07. 3758 [Steve Henson] 3759 3760 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and 3761 remained unused and not that useful. A variety of other little bignum 3762 tweaks and fixes have also been made continuing on from the audit (see 3763 below). 3764 [Geoff Thorpe] 3765 3766 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with 3767 associated ASN1, EVP and SSL functions and old ASN1 macros. 3768 [Richard Levitte] 3769 3770 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results, 3771 and this should never fail. So the return value from the use of 3772 BN_set_word() (which can fail due to needless expansion) is now deprecated; 3773 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro. 3774 [Geoff Thorpe] 3775 3776 *) BN_CTX_get() should return zero-valued bignums, providing the same 3777 initialised value as BN_new(). 3778 [Geoff Thorpe, suggested by Ulf M��ller] 3779 3780 *) Support for inhibitAnyPolicy certificate extension. 3781 [Steve Henson] 3782 3783 *) An audit of the BIGNUM code is underway, for which debugging code is 3784 enabled when BN_DEBUG is defined. This makes stricter enforcements on what 3785 is considered valid when processing BIGNUMs, and causes execution to 3786 assert() when a problem is discovered. If BN_DEBUG_RAND is defined, 3787 further steps are taken to deliberately pollute unused data in BIGNUM 3788 structures to try and expose faulty code further on. For now, openssl will 3789 (in its default mode of operation) continue to tolerate the inconsistent 3790 forms that it has tolerated in the past, but authors and packagers should 3791 consider trying openssl and their own applications when compiled with 3792 these debugging symbols defined. It will help highlight potential bugs in 3793 their own code, and will improve the test coverage for OpenSSL itself. At 3794 some point, these tighter rules will become openssl's default to improve 3795 maintainability, though the assert()s and other overheads will remain only 3796 in debugging configurations. See bn.h for more details. 3797 [Geoff Thorpe, Nils Larsch, Ulf M��ller] 3798 3799 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure 3800 that can only be obtained through BN_CTX_new() (which implicitly 3801 initialises it). The presence of this function only made it possible 3802 to overwrite an existing structure (and cause memory leaks). 3803 [Geoff Thorpe] 3804 3805 *) Because of the callback-based approach for implementing LHASH as a 3806 template type, lh_insert() adds opaque objects to hash-tables and 3807 lh_doall() or lh_doall_arg() are typically used with a destructor callback 3808 to clean up those corresponding objects before destroying the hash table 3809 (and losing the object pointers). So some over-zealous constifications in 3810 LHASH have been relaxed so that lh_insert() does not take (nor store) the 3811 objects as "const" and the lh_doall[_arg] callback wrappers are not 3812 prototyped to have "const" restrictions on the object pointers they are 3813 given (and so aren't required to cast them away any more). 3814 [Geoff Thorpe] 3815 3816 *) The tmdiff.h API was so ugly and minimal that our own timing utility 3817 (speed) prefers to use its own implementation. The two implementations 3818 haven't been consolidated as yet (volunteers?) but the tmdiff API has had 3819 its object type properly exposed (MS_TM) instead of casting to/from "char 3820 *". This may still change yet if someone realises MS_TM and "ms_time_***" 3821 aren't necessarily the greatest nomenclatures - but this is what was used 3822 internally to the implementation so I've used that for now. 3823 [Geoff Thorpe] 3824 3825 *) Ensure that deprecated functions do not get compiled when 3826 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of 3827 the self-tests were still using deprecated key-generation functions so 3828 these have been updated also. 3829 [Geoff Thorpe] 3830 3831 *) Reorganise PKCS#7 code to separate the digest location functionality 3832 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest(). 3833 New function PKCS7_set_digest() to set the digest type for PKCS#7 3834 digestedData type. Add additional code to correctly generate the 3835 digestedData type and add support for this type in PKCS7 initialization 3836 functions. 3837 [Steve Henson] 3838 3839 *) New function PKCS7_set0_type_other() this initializes a PKCS7 3840 structure of type "other". 3841 [Steve Henson] 3842 3843 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making 3844 sure the loop does correctly stop and breaking ("division by zero") 3845 modulus operations are not performed. The (pre-generated) prime 3846 table crypto/bn/bn_prime.h was already correct, but it could not be 3847 re-generated on some platforms because of the "division by zero" 3848 situation in the script. 3849 [Ralf S. Engelschall] 3850 3851 *) Update support for ECC-based TLS ciphersuites according to 3852 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with 3853 SHA-1 now is only used for "small" curves (where the 3854 representation of a field element takes up to 24 bytes); for 3855 larger curves, the field element resulting from ECDH is directly 3856 used as premaster secret. 3857 [Douglas Stebila (Sun Microsystems Laboratories)] 3858 3859 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2 3860 curve secp160r1 to the tests. 3861 [Douglas Stebila (Sun Microsystems Laboratories)] 3862 3863 *) Add the possibility to load symbols globally with DSO. 3864 [G��tz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte] 3865 3866 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better 3867 control of the error stack. 3868 [Richard Levitte] 3869 3870 *) Add support for STORE in ENGINE. 3871 [Richard Levitte] 3872 3873 *) Add the STORE type. The intention is to provide a common interface 3874 to certificate and key stores, be they simple file-based stores, or 3875 HSM-type store, or LDAP stores, or... 3876 NOTE: The code is currently UNTESTED and isn't really used anywhere. 3877 [Richard Levitte] 3878 3879 *) Add a generic structure called OPENSSL_ITEM. This can be used to 3880 pass a list of arguments to any function as well as provide a way 3881 for a function to pass data back to the caller. 3882 [Richard Levitte] 3883 3884 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup() 3885 works like BUF_strdup() but can be used to duplicate a portion of 3886 a string. The copy gets NUL-terminated. BUF_memdup() duplicates 3887 a memory area. 3888 [Richard Levitte] 3889 3890 *) Add the function sk_find_ex() which works like sk_find(), but will 3891 return an index to an element even if an exact match couldn't be 3892 found. The index is guaranteed to point at the element where the 3893 searched-for key would be inserted to preserve sorting order. 3894 [Richard Levitte] 3895 3896 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but 3897 takes an extra flags argument for optional functionality. Currently, 3898 the following flags are defined: 3899 3900 OBJ_BSEARCH_VALUE_ON_NOMATCH 3901 This one gets OBJ_bsearch_ex() to return a pointer to the first 3902 element where the comparing function returns a negative or zero 3903 number. 3904 3905 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH 3906 This one gets OBJ_bsearch_ex() to return a pointer to the first 3907 element where the comparing function returns zero. This is useful 3908 if there are more than one element where the comparing function 3909 returns zero. 3910 [Richard Levitte] 3911 3912 *) Make it possible to create self-signed certificates with 'openssl ca' 3913 in such a way that the self-signed certificate becomes part of the 3914 CA database and uses the same mechanisms for serial number generation 3915 as all other certificate signing. The new flag '-selfsign' enables 3916 this functionality. Adapt CA.sh and CA.pl.in. 3917 [Richard Levitte] 3918 3919 *) Add functionality to check the public key of a certificate request 3920 against a given private. This is useful to check that a certificate 3921 request can be signed by that key (self-signing). 3922 [Richard Levitte] 3923 3924 *) Make it possible to have multiple active certificates with the same 3925 subject in the CA index file. This is done only if the keyword 3926 'unique_subject' is set to 'no' in the main CA section (default 3927 if 'CA_default') of the configuration file. The value is saved 3928 with the database itself in a separate index attribute file, 3929 named like the index file with '.attr' appended to the name. 3930 [Richard Levitte] 3931 3932 *) Generate muti valued AVAs using '+' notation in config files for 3933 req and dirName. 3934 [Steve Henson] 3935 3936 *) Support for nameConstraints certificate extension. 3937 [Steve Henson] 3938 3939 *) Support for policyConstraints certificate extension. 3940 [Steve Henson] 3941 3942 *) Support for policyMappings certificate extension. 3943 [Steve Henson] 3944 3945 *) Make sure the default DSA_METHOD implementation only uses its 3946 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL, 3947 and change its own handlers to be NULL so as to remove unnecessary 3948 indirection. This lets alternative implementations fallback to the 3949 default implementation more easily. 3950 [Geoff Thorpe] 3951 3952 *) Support for directoryName in GeneralName related extensions 3953 in config files. 3954 [Steve Henson] 3955 3956 *) Make it possible to link applications using Makefile.shared. 3957 Make that possible even when linking against static libraries! 3958 [Richard Levitte] 3959 3960 *) Support for single pass processing for S/MIME signing. This now 3961 means that S/MIME signing can be done from a pipe, in addition 3962 cleartext signing (multipart/signed type) is effectively streaming 3963 and the signed data does not need to be all held in memory. 3964 3965 This is done with a new flag PKCS7_STREAM. When this flag is set 3966 PKCS7_sign() only initializes the PKCS7 structure and the actual signing 3967 is done after the data is output (and digests calculated) in 3968 SMIME_write_PKCS7(). 3969 [Steve Henson] 3970 3971 *) Add full support for -rpath/-R, both in shared libraries and 3972 applications, at least on the platforms where it's known how 3973 to do it. 3974 [Richard Levitte] 3975 3976 *) In crypto/ec/ec_mult.c, implement fast point multiplication with 3977 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult() 3978 will now compute a table of multiples of the generator that 3979 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul() 3980 faster (notably in the case of a single point multiplication, 3981 scalar * generator). 3982 [Nils Larsch, Bodo Moeller] 3983 3984 *) IPv6 support for certificate extensions. The various extensions 3985 which use the IP:a.b.c.d can now take IPv6 addresses using the 3986 formats of RFC1884 2.2 . IPv6 addresses are now also displayed 3987 correctly. 3988 [Steve Henson] 3989 3990 *) Added an ENGINE that implements RSA by performing private key 3991 exponentiations with the GMP library. The conversions to and from 3992 GMP's mpz_t format aren't optimised nor are any montgomery forms 3993 cached, and on x86 it appears OpenSSL's own performance has caught up. 3994 However there are likely to be other architectures where GMP could 3995 provide a boost. This ENGINE is not built in by default, but it can be 3996 specified at Configure time and should be accompanied by the necessary 3997 linker additions, eg; 3998 ./config -DOPENSSL_USE_GMP -lgmp 3999 [Geoff Thorpe] 4000 4001 *) "openssl engine" will not display ENGINE/DSO load failure errors when 4002 testing availability of engines with "-t" - the old behaviour is 4003 produced by increasing the feature's verbosity with "-tt". 4004 [Geoff Thorpe] 4005 4006 *) ECDSA routines: under certain error conditions uninitialized BN objects 4007 could be freed. Solution: make sure initialization is performed early 4008 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de> 4009 via PR#459) 4010 [Lutz Jaenicke] 4011 4012 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD 4013 and DH_METHOD (eg. by ENGINE implementations) to override the normal 4014 software implementations. For DSA and DH, parameter generation can 4015 also be overriden by providing the appropriate method callbacks. 4016 [Geoff Thorpe] 4017 4018 *) Change the "progress" mechanism used in key-generation and 4019 primality testing to functions that take a new BN_GENCB pointer in 4020 place of callback/argument pairs. The new API functions have "_ex" 4021 postfixes and the older functions are reimplemented as wrappers for 4022 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide 4023 declarations of the old functions to help (graceful) attempts to 4024 migrate to the new functions. Also, the new key-generation API 4025 functions operate on a caller-supplied key-structure and return 4026 success/failure rather than returning a key or NULL - this is to 4027 help make "keygen" another member function of RSA_METHOD etc. 4028 4029 Example for using the new callback interface: 4030 4031 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...; 4032 void *my_arg = ...; 4033 BN_GENCB my_cb; 4034 4035 BN_GENCB_set(&my_cb, my_callback, my_arg); 4036 4037 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb); 4038 /* For the meaning of a, b in calls to my_callback(), see the 4039 * documentation of the function that calls the callback. 4040 * cb will point to my_cb; my_arg can be retrieved as cb->arg. 4041 * my_callback should return 1 if it wants BN_is_prime_ex() 4042 * to continue, or 0 to stop. 4043 */ 4044 4045 [Geoff Thorpe] 4046 4047 *) Change the ZLIB compression method to be stateful, and make it 4048 available to TLS with the number defined in 4049 draft-ietf-tls-compression-04.txt. 4050 [Richard Levitte] 4051 4052 *) Add the ASN.1 structures and functions for CertificatePair, which 4053 is defined as follows (according to X.509_4thEditionDraftV6.pdf): 4054 4055 CertificatePair ::= SEQUENCE { 4056 forward [0] Certificate OPTIONAL, 4057 reverse [1] Certificate OPTIONAL, 4058 -- at least one of the pair shall be present -- } 4059 4060 Also implement the PEM functions to read and write certificate 4061 pairs, and defined the PEM tag as "CERTIFICATE PAIR". 4062 4063 This needed to be defined, mostly for the sake of the LDAP 4064 attribute crossCertificatePair, but may prove useful elsewhere as 4065 well. 4066 [Richard Levitte] 4067 4068 *) Make it possible to inhibit symlinking of shared libraries in 4069 Makefile.shared, for Cygwin's sake. 4070 [Richard Levitte] 4071 4072 *) Extend the BIGNUM API by creating a function 4073 void BN_set_negative(BIGNUM *a, int neg); 4074 and a macro that behave like 4075 int BN_is_negative(const BIGNUM *a); 4076 4077 to avoid the need to access 'a->neg' directly in applications. 4078 [Nils Larsch] 4079 4080 *) Implement fast modular reduction for pseudo-Mersenne primes 4081 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c). 4082 EC_GROUP_new_curve_GFp() will now automatically use this 4083 if applicable. 4084 [Nils Larsch <nla@trustcenter.de>] 4085 4086 *) Add new lock type (CRYPTO_LOCK_BN). 4087 [Bodo Moeller] 4088 4089 *) Change the ENGINE framework to automatically load engines 4090 dynamically from specific directories unless they could be 4091 found to already be built in or loaded. Move all the 4092 current engines except for the cryptodev one to a new 4093 directory engines/. 4094 The engines in engines/ are built as shared libraries if 4095 the "shared" options was given to ./Configure or ./config. 4096 Otherwise, they are inserted in libcrypto.a. 4097 /usr/local/ssl/engines is the default directory for dynamic 4098 engines, but that can be overriden at configure time through 4099 the usual use of --prefix and/or --openssldir, and at run 4100 time with the environment variable OPENSSL_ENGINES. 4101 [Geoff Thorpe and Richard Levitte] 4102 4103 *) Add Makefile.shared, a helper makefile to build shared 4104 libraries. Addapt Makefile.org. 4105 [Richard Levitte] 4106 4107 *) Add version info to Win32 DLLs. 4108 [Peter 'Luna' Runestig" <peter@runestig.com>] 4109 4110 *) Add new 'medium level' PKCS#12 API. Certificates and keys 4111 can be added using this API to created arbitrary PKCS#12 4112 files while avoiding the low level API. 4113 4114 New options to PKCS12_create(), key or cert can be NULL and 4115 will then be omitted from the output file. The encryption 4116 algorithm NIDs can be set to -1 for no encryption, the mac 4117 iteration count can be set to 0 to omit the mac. 4118 4119 Enhance pkcs12 utility by making the -nokeys and -nocerts 4120 options work when creating a PKCS#12 file. New option -nomac 4121 to omit the mac, NONE can be set for an encryption algorithm. 4122 New code is modified to use the enhanced PKCS12_create() 4123 instead of the low level API. 4124 [Steve Henson] 4125 4126 *) Extend ASN1 encoder to support indefinite length constructed 4127 encoding. This can output sequences tags and octet strings in 4128 this form. Modify pk7_asn1.c to support indefinite length 4129 encoding. This is experimental and needs additional code to 4130 be useful, such as an ASN1 bio and some enhanced streaming 4131 PKCS#7 code. 4132 4133 Extend template encode functionality so that tagging is passed 4134 down to the template encoder. 4135 [Steve Henson] 4136 4137 *) Let 'openssl req' fail if an argument to '-newkey' is not 4138 recognized instead of using RSA as a default. 4139 [Bodo Moeller] 4140 4141 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt. 4142 As these are not official, they are not included in "ALL"; 4143 the "ECCdraft" ciphersuite group alias can be used to select them. 4144 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)] 4145 4146 *) Add ECDH engine support. 4147 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)] 4148 4149 *) Add ECDH in new directory crypto/ecdh/. 4150 [Douglas Stebila (Sun Microsystems Laboratories)] 4151 4152 *) Let BN_rand_range() abort with an error after 100 iterations 4153 without success (which indicates a broken PRNG). 4154 [Bodo Moeller] 4155 4156 *) Change BN_mod_sqrt() so that it verifies that the input value 4157 is really the square of the return value. (Previously, 4158 BN_mod_sqrt would show GIGO behaviour.) 4159 [Bodo Moeller] 4160 4161 *) Add named elliptic curves over binary fields from X9.62, SECG, 4162 and WAP/WTLS; add OIDs that were still missing. 4163 4164 [Sheueling Chang Shantz and Douglas Stebila 4165 (Sun Microsystems Laboratories)] 4166 4167 *) Extend the EC library for elliptic curves over binary fields 4168 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/). 4169 New EC_METHOD: 4170 4171 EC_GF2m_simple_method 4172 4173 New API functions: 4174 4175 EC_GROUP_new_curve_GF2m 4176 EC_GROUP_set_curve_GF2m 4177 EC_GROUP_get_curve_GF2m 4178 EC_POINT_set_affine_coordinates_GF2m 4179 EC_POINT_get_affine_coordinates_GF2m 4180 EC_POINT_set_compressed_coordinates_GF2m 4181 4182 Point compression for binary fields is disabled by default for 4183 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to 4184 enable it). 4185 4186 As binary polynomials are represented as BIGNUMs, various members 4187 of the EC_GROUP and EC_POINT data structures can be shared 4188 between the implementations for prime fields and binary fields; 4189 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m) 4190 are essentially identical to their ..._GFp counterparts. 4191 (For simplicity, the '..._GFp' prefix has been dropped from 4192 various internal method names.) 4193 4194 An internal 'field_div' method (similar to 'field_mul' and 4195 'field_sqr') has been added; this is used only for binary fields. 4196 4197 [Sheueling Chang Shantz and Douglas Stebila 4198 (Sun Microsystems Laboratories)] 4199 4200 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult() 4201 through methods ('mul', 'precompute_mult'). 4202 4203 The generic implementations (now internally called 'ec_wNAF_mul' 4204 and 'ec_wNAF_precomputed_mult') remain the default if these 4205 methods are undefined. 4206 4207 [Sheueling Chang Shantz and Douglas Stebila 4208 (Sun Microsystems Laboratories)] 4209 4210 *) New function EC_GROUP_get_degree, which is defined through 4211 EC_METHOD. For curves over prime fields, this returns the bit 4212 length of the modulus. 4213 4214 [Sheueling Chang Shantz and Douglas Stebila 4215 (Sun Microsystems Laboratories)] 4216 4217 *) New functions EC_GROUP_dup, EC_POINT_dup. 4218 (These simply call ..._new and ..._copy). 4219 4220 [Sheueling Chang Shantz and Douglas Stebila 4221 (Sun Microsystems Laboratories)] 4222 4223 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c. 4224 Polynomials are represented as BIGNUMs (where the sign bit is not 4225 used) in the following functions [macros]: 4226 4227 BN_GF2m_add 4228 BN_GF2m_sub [= BN_GF2m_add] 4229 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr] 4230 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr] 4231 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr] 4232 BN_GF2m_mod_inv 4233 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr] 4234 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr] 4235 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr] 4236 BN_GF2m_cmp [= BN_ucmp] 4237 4238 (Note that only the 'mod' functions are actually for fields GF(2^m). 4239 BN_GF2m_add() is misnomer, but this is for the sake of consistency.) 4240 4241 For some functions, an the irreducible polynomial defining a 4242 field can be given as an 'unsigned int[]' with strictly 4243 decreasing elements giving the indices of those bits that are set; 4244 i.e., p[] represents the polynomial 4245 f(t) = t^p[0] + t^p[1] + ... + t^p[k] 4246 where 4247 p[0] > p[1] > ... > p[k] = 0. 4248 This applies to the following functions: 4249 4250 BN_GF2m_mod_arr 4251 BN_GF2m_mod_mul_arr 4252 BN_GF2m_mod_sqr_arr 4253 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv] 4254 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div] 4255 BN_GF2m_mod_exp_arr 4256 BN_GF2m_mod_sqrt_arr 4257 BN_GF2m_mod_solve_quad_arr 4258 BN_GF2m_poly2arr 4259 BN_GF2m_arr2poly 4260 4261 Conversion can be performed by the following functions: 4262 4263 BN_GF2m_poly2arr 4264 BN_GF2m_arr2poly 4265 4266 bntest.c has additional tests for binary polynomial arithmetic. 4267 4268 Two implementations for BN_GF2m_mod_div() are available. 4269 The default algorithm simply uses BN_GF2m_mod_inv() and 4270 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only 4271 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the 4272 copyright notice in crypto/bn/bn_gf2m.c before enabling it). 4273 4274 [Sheueling Chang Shantz and Douglas Stebila 4275 (Sun Microsystems Laboratories)] 4276 4277 *) Add new error code 'ERR_R_DISABLED' that can be used when some 4278 functionality is disabled at compile-time. 4279 [Douglas Stebila <douglas.stebila@sun.com>] 4280 4281 *) Change default behaviour of 'openssl asn1parse' so that more 4282 information is visible when viewing, e.g., a certificate: 4283 4284 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump' 4285 mode the content of non-printable OCTET STRINGs is output in a 4286 style similar to INTEGERs, but with '[HEX DUMP]' prepended to 4287 avoid the appearance of a printable string. 4288 [Nils Larsch <nla@trustcenter.de>] 4289 4290 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access 4291 functions 4292 EC_GROUP_set_asn1_flag() 4293 EC_GROUP_get_asn1_flag() 4294 EC_GROUP_set_point_conversion_form() 4295 EC_GROUP_get_point_conversion_form() 4296 These control ASN1 encoding details: 4297 - Curves (i.e., groups) are encoded explicitly unless asn1_flag 4298 has been set to OPENSSL_EC_NAMED_CURVE. 4299 - Points are encoded in uncompressed form by default; options for 4300 asn1_for are as for point2oct, namely 4301 POINT_CONVERSION_COMPRESSED 4302 POINT_CONVERSION_UNCOMPRESSED 4303 POINT_CONVERSION_HYBRID 4304 4305 Also add 'seed' and 'seed_len' members to EC_GROUP with access 4306 functions 4307 EC_GROUP_set_seed() 4308 EC_GROUP_get0_seed() 4309 EC_GROUP_get_seed_len() 4310 This is used only for ASN1 purposes (so far). 4311 [Nils Larsch <nla@trustcenter.de>] 4312 4313 *) Add 'field_type' member to EC_METHOD, which holds the NID 4314 of the appropriate field type OID. The new function 4315 EC_METHOD_get_field_type() returns this value. 4316 [Nils Larsch <nla@trustcenter.de>] 4317 4318 *) Add functions 4319 EC_POINT_point2bn() 4320 EC_POINT_bn2point() 4321 EC_POINT_point2hex() 4322 EC_POINT_hex2point() 4323 providing useful interfaces to EC_POINT_point2oct() and 4324 EC_POINT_oct2point(). 4325 [Nils Larsch <nla@trustcenter.de>] 4326 4327 *) Change internals of the EC library so that the functions 4328 EC_GROUP_set_generator() 4329 EC_GROUP_get_generator() 4330 EC_GROUP_get_order() 4331 EC_GROUP_get_cofactor() 4332 are implemented directly in crypto/ec/ec_lib.c and not dispatched 4333 to methods, which would lead to unnecessary code duplication when 4334 adding different types of curves. 4335 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller] 4336 4337 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM 4338 arithmetic, and such that modified wNAFs are generated 4339 (which avoid length expansion in many cases). 4340 [Bodo Moeller] 4341 4342 *) Add a function EC_GROUP_check_discriminant() (defined via 4343 EC_METHOD) that verifies that the curve discriminant is non-zero. 4344 4345 Add a function EC_GROUP_check() that makes some sanity tests 4346 on a EC_GROUP, its generator and order. This includes 4347 EC_GROUP_check_discriminant(). 4348 [Nils Larsch <nla@trustcenter.de>] 4349 4350 *) Add ECDSA in new directory crypto/ecdsa/. 4351 4352 Add applications 'openssl ecparam' and 'openssl ecdsa' 4353 (these are based on 'openssl dsaparam' and 'openssl dsa'). 4354 4355 ECDSA support is also included in various other files across the 4356 library. Most notably, 4357 - 'openssl req' now has a '-newkey ecdsa:file' option; 4358 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA; 4359 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and 4360 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make 4361 them suitable for ECDSA where domain parameters must be 4362 extracted before the specific public key; 4363 - ECDSA engine support has been added. 4364 [Nils Larsch <nla@trustcenter.de>] 4365 4366 *) Include some named elliptic curves, and add OIDs from X9.62, 4367 SECG, and WAP/WTLS. Each curve can be obtained from the new 4368 function 4369 EC_GROUP_new_by_curve_name(), 4370 and the list of available named curves can be obtained with 4371 EC_get_builtin_curves(). 4372 Also add a 'curve_name' member to EC_GROUP objects, which can be 4373 accessed via 4374 EC_GROUP_set_curve_name() 4375 EC_GROUP_get_curve_name() 4376 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller] 4377 4378 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there 4379 was actually never needed) and in BN_mul(). The removal in BN_mul() 4380 required a small change in bn_mul_part_recursive() and the addition 4381 of the functions bn_cmp_part_words(), bn_sub_part_words() and 4382 bn_add_part_words(), which do the same thing as bn_cmp_words(), 4383 bn_sub_words() and bn_add_words() except they take arrays with 4384 differing sizes. 4385 [Richard Levitte] 4386 4387 Changes between 0.9.7l and 0.9.7m [23 Feb 2007] 4388 4389 *) Cleanse PEM buffers before freeing them since they may contain 4390 sensitive data. 4391 [Benjamin Bennett <ben@psc.edu>] 4392 4393 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that 4394 a ciphersuite string such as "DEFAULT:RSA" cannot enable 4395 authentication-only ciphersuites. 4396 [Bodo Moeller] 4397 4398 *) Since AES128 and AES256 share a single mask bit in the logic of 4399 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a 4400 kludge to work properly if AES128 is available and AES256 isn't. 4401 [Victor Duchovni] 4402 4403 *) Expand security boundary to match 1.1.1 module. 4404 [Steve Henson] 4405 4406 *) Remove redundant features: hash file source, editing of test vectors 4407 modify fipsld to use external fips_premain.c signature. 4408 [Steve Henson] 4409 4410 *) New perl script mkfipsscr.pl to create shell scripts or batch files to 4411 run algorithm test programs. 4412 [Steve Henson] 4413 4414 *) Make algorithm test programs more tolerant of whitespace. 4415 [Steve Henson] 4416 4417 *) Have SSL/TLS server implementation tolerate "mismatched" record 4418 protocol version while receiving ClientHello even if the 4419 ClientHello is fragmented. (The server can't insist on the 4420 particular protocol version it has chosen before the ServerHello 4421 message has informed the client about his choice.) 4422 [Bodo Moeller] 4423 4424 *) Load error codes if they are not already present instead of using a 4425 static variable. This allows them to be cleanly unloaded and reloaded. 4426 [Steve Henson] 4427 4428 Changes between 0.9.7k and 0.9.7l [28 Sep 2006] 4429 4430 *) Introduce limits to prevent malicious keys being able to 4431 cause a denial of service. (CVE-2006-2940) 4432 [Steve Henson, Bodo Moeller] 4433 4434 *) Fix ASN.1 parsing of certain invalid structures that can result 4435 in a denial of service. (CVE-2006-2937) [Steve Henson] 4436 4437 *) Fix buffer overflow in SSL_get_shared_ciphers() function. 4438 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] 4439 4440 *) Fix SSL client code which could crash if connecting to a 4441 malicious SSLv2 server. (CVE-2006-4343) 4442 [Tavis Ormandy and Will Drewry, Google Security Team] 4443 4444 *) Change ciphersuite string processing so that an explicit 4445 ciphersuite selects this one ciphersuite (so that "AES256-SHA" 4446 will no longer include "AES128-SHA"), and any other similar 4447 ciphersuite (same bitmap) from *other* protocol versions (so that 4448 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the 4449 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining 4450 changes from 0.9.8b and 0.9.8d. 4451 [Bodo Moeller] 4452 4453 Changes between 0.9.7j and 0.9.7k [05 Sep 2006] 4454 4455 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher 4456 (CVE-2006-4339) [Ben Laurie and Google Security Team] 4457 4458 *) Change the Unix randomness entropy gathering to use poll() when 4459 possible instead of select(), since the latter has some 4460 undesirable limitations. 4461 [Darryl Miles via Richard Levitte and Bodo Moeller] 4462 4463 *) Disable rogue ciphersuites: 4464 4465 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") 4466 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") 4467 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") 4468 4469 The latter two were purportedly from 4470 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really 4471 appear there. 4472 4473 Also deactive the remaining ciphersuites from 4474 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as 4475 unofficial, and the ID has long expired. 4476 [Bodo Moeller] 4477 4478 *) Fix RSA blinding Heisenbug (problems sometimes occured on 4479 dual-core machines) and other potential thread-safety issues. 4480 [Bodo Moeller] 4481 4482 Changes between 0.9.7i and 0.9.7j [04 May 2006] 4483 4484 *) Adapt fipsld and the build system to link against the validated FIPS 4485 module in FIPS mode. 4486 [Steve Henson] 4487 4488 *) Fixes for VC++ 2005 build under Windows. 4489 [Steve Henson] 4490 4491 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make 4492 from a Windows bash shell such as MSYS. It is autodetected from the 4493 "config" script when run from a VC++ environment. Modify standard VC++ 4494 build to use fipscanister.o from the GNU make build. 4495 [Steve Henson] 4496 4497 Changes between 0.9.7h and 0.9.7i [14 Oct 2005] 4498 4499 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS. 4500 The value now differs depending on if you build for FIPS or not. 4501 BEWARE! A program linked with a shared FIPSed libcrypto can't be 4502 safely run with a non-FIPSed libcrypto, as it may crash because of 4503 the difference induced by this change. 4504 [Andy Polyakov] 4505 4506 Changes between 0.9.7g and 0.9.7h [11 Oct 2005] 4507 4508 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING 4509 (part of SSL_OP_ALL). This option used to disable the 4510 countermeasure against man-in-the-middle protocol-version 4511 rollback in the SSL 2.0 server implementation, which is a bad 4512 idea. (CVE-2005-2969) 4513 4514 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center 4515 for Information Security, National Institute of Advanced Industrial 4516 Science and Technology [AIST], Japan)] 4517 4518 *) Minimal support for X9.31 signatures and PSS padding modes. This is 4519 mainly for FIPS compliance and not fully integrated at this stage. 4520 [Steve Henson] 4521 4522 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform 4523 the exponentiation using a fixed-length exponent. (Otherwise, 4524 the information leaked through timing could expose the secret key 4525 after many signatures; cf. Bleichenbacher's attack on DSA with 4526 biased k.) 4527 [Bodo Moeller] 4528 4529 *) Make a new fixed-window mod_exp implementation the default for 4530 RSA, DSA, and DH private-key operations so that the sequence of 4531 squares and multiplies and the memory access pattern are 4532 independent of the particular secret key. This will mitigate 4533 cache-timing and potential related attacks. 4534 4535 BN_mod_exp_mont_consttime() is the new exponentiation implementation, 4536 and this is automatically used by BN_mod_exp_mont() if the new flag 4537 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH 4538 will use this BN flag for private exponents unless the flag 4539 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or 4540 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set. 4541 4542 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller] 4543 4544 *) Change the client implementation for SSLv23_method() and 4545 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0 4546 Client Hello message format if the SSL_OP_NO_SSLv2 option is set. 4547 (Previously, the SSL 2.0 backwards compatible Client Hello 4548 message format would be used even with SSL_OP_NO_SSLv2.) 4549 [Bodo Moeller] 4550 4551 *) Add support for smime-type MIME parameter in S/MIME messages which some 4552 clients need. 4553 [Steve Henson] 4554 4555 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in 4556 a threadsafe manner. Modify rsa code to use new function and add calls 4557 to dsa and dh code (which had race conditions before). 4558 [Steve Henson] 4559 4560 *) Include the fixed error library code in the C error file definitions 4561 instead of fixing them up at runtime. This keeps the error code 4562 structures constant. 4563 [Steve Henson] 4564 4565 Changes between 0.9.7f and 0.9.7g [11 Apr 2005] 4566 4567 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after 4568 OpenSSL 0.9.8.] 4569 4570 *) Fixes for newer kerberos headers. NB: the casts are needed because 4571 the 'length' field is signed on one version and unsigned on another 4572 with no (?) obvious way to tell the difference, without these VC++ 4573 complains. Also the "definition" of FAR (blank) is no longer included 4574 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up 4575 some needed definitions. 4576 [Steve Henson] 4577 4578 *) Undo Cygwin change. 4579 [Ulf M��ller] 4580 4581 *) Added support for proxy certificates according to RFC 3820. 4582 Because they may be a security thread to unaware applications, 4583 they must be explicitely allowed in run-time. See 4584 docs/HOWTO/proxy_certificates.txt for further information. 4585 [Richard Levitte] 4586 4587 Changes between 0.9.7e and 0.9.7f [22 Mar 2005] 4588 4589 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating 4590 server and client random values. Previously 4591 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in 4592 less random data when sizeof(time_t) > 4 (some 64 bit platforms). 4593 4594 This change has negligible security impact because: 4595 4596 1. Server and client random values still have 24 bytes of pseudo random 4597 data. 4598 4599 2. Server and client random values are sent in the clear in the initial 4600 handshake. 4601 4602 3. The master secret is derived using the premaster secret (48 bytes in 4603 size for static RSA ciphersuites) as well as client server and random 4604 values. 4605 4606 The OpenSSL team would like to thank the UK NISCC for bringing this issue 4607 to our attention. 4608 4609 [Stephen Henson, reported by UK NISCC] 4610 4611 *) Use Windows randomness collection on Cygwin. 4612 [Ulf M��ller] 4613 4614 *) Fix hang in EGD/PRNGD query when communication socket is closed 4615 prematurely by EGD/PRNGD. 4616 [Darren Tucker <dtucker@zip.com.au> via Lutz J��nicke, resolves #1014] 4617 4618 *) Prompt for pass phrases when appropriate for PKCS12 input format. 4619 [Steve Henson] 4620 4621 *) Back-port of selected performance improvements from development 4622 branch, as well as improved support for PowerPC platforms. 4623 [Andy Polyakov] 4624 4625 *) Add lots of checks for memory allocation failure, error codes to indicate 4626 failure and freeing up memory if a failure occurs. 4627 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson] 4628 4629 *) Add new -passin argument to dgst. 4630 [Steve Henson] 4631 4632 *) Perform some character comparisons of different types in X509_NAME_cmp: 4633 this is needed for some certificates that reencode DNs into UTF8Strings 4634 (in violation of RFC3280) and can't or wont issue name rollover 4635 certificates. 4636 [Steve Henson] 4637 4638 *) Make an explicit check during certificate validation to see that 4639 the CA setting in each certificate on the chain is correct. As a 4640 side effect always do the following basic checks on extensions, 4641 not just when there's an associated purpose to the check: 4642 4643 - if there is an unhandled critical extension (unless the user 4644 has chosen to ignore this fault) 4645 - if the path length has been exceeded (if one is set at all) 4646 - that certain extensions fit the associated purpose (if one has 4647 been given) 4648 [Richard Levitte] 4649 4650 Changes between 0.9.7d and 0.9.7e [25 Oct 2004] 4651 4652 *) Avoid a race condition when CRLs are checked in a multi threaded 4653 environment. This would happen due to the reordering of the revoked 4654 entries during signature checking and serial number lookup. Now the 4655 encoding is cached and the serial number sort performed under a lock. 4656 Add new STACK function sk_is_sorted(). 4657 [Steve Henson] 4658 4659 *) Add Delta CRL to the extension code. 4660 [Steve Henson] 4661 4662 *) Various fixes to s3_pkt.c so alerts are sent properly. 4663 [David Holmes <d.holmes@f5.com>] 4664 4665 *) Reduce the chances of duplicate issuer name and serial numbers (in 4666 violation of RFC3280) using the OpenSSL certificate creation utilities. 4667 This is done by creating a random 64 bit value for the initial serial 4668 number when a serial number file is created or when a self signed 4669 certificate is created using 'openssl req -x509'. The initial serial 4670 number file is created using 'openssl x509 -next_serial' in CA.pl 4671 rather than being initialized to 1. 4672 [Steve Henson] 4673 4674 Changes between 0.9.7c and 0.9.7d [17 Mar 2004] 4675 4676 *) Fix null-pointer assignment in do_change_cipher_spec() revealed 4677 by using the Codenomicon TLS Test Tool (CVE-2004-0079) 4678 [Joe Orton, Steve Henson] 4679 4680 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites 4681 (CVE-2004-0112) 4682 [Joe Orton, Steve Henson] 4683 4684 *) Make it possible to have multiple active certificates with the same 4685 subject in the CA index file. This is done only if the keyword 4686 'unique_subject' is set to 'no' in the main CA section (default 4687 if 'CA_default') of the configuration file. The value is saved 4688 with the database itself in a separate index attribute file, 4689 named like the index file with '.attr' appended to the name. 4690 [Richard Levitte] 4691 4692 *) X509 verify fixes. Disable broken certificate workarounds when 4693 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if 4694 keyUsage extension present. Don't accept CRLs with unhandled critical 4695 extensions: since verify currently doesn't process CRL extensions this 4696 rejects a CRL with *any* critical extensions. Add new verify error codes 4697 for these cases. 4698 [Steve Henson] 4699 4700 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue. 4701 A clarification of RFC2560 will require the use of OCTET STRINGs and 4702 some implementations cannot handle the current raw format. Since OpenSSL 4703 copies and compares OCSP nonces as opaque blobs without any attempt at 4704 parsing them this should not create any compatibility issues. 4705 [Steve Henson] 4706 4707 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when 4708 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without 4709 this HMAC (and other) operations are several times slower than OpenSSL 4710 < 0.9.7. 4711 [Steve Henson] 4712 4713 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex(). 4714 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>] 4715 4716 *) Use the correct content when signing type "other". 4717 [Steve Henson] 4718 4719 Changes between 0.9.7b and 0.9.7c [30 Sep 2003] 4720 4721 *) Fix various bugs revealed by running the NISCC test suite: 4722 4723 Stop out of bounds reads in the ASN1 code when presented with 4724 invalid tags (CVE-2003-0543 and CVE-2003-0544). 4725 4726 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545). 4727 4728 If verify callback ignores invalid public key errors don't try to check 4729 certificate signature with the NULL public key. 4730 4731 [Steve Henson] 4732 4733 *) New -ignore_err option in ocsp application to stop the server 4734 exiting on the first error in a request. 4735 [Steve Henson] 4736 4737 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate 4738 if the server requested one: as stated in TLS 1.0 and SSL 3.0 4739 specifications. 4740 [Steve Henson] 4741 4742 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional 4743 extra data after the compression methods not only for TLS 1.0 4744 but also for SSL 3.0 (as required by the specification). 4745 [Bodo Moeller; problem pointed out by Matthias Loepfe] 4746 4747 *) Change X509_certificate_type() to mark the key as exported/exportable 4748 when it's 512 *bits* long, not 512 bytes. 4749 [Richard Levitte] 4750 4751 *) Change AES_cbc_encrypt() so it outputs exact multiple of 4752 blocks during encryption. 4753 [Richard Levitte] 4754 4755 *) Various fixes to base64 BIO and non blocking I/O. On write 4756 flushes were not handled properly if the BIO retried. On read 4757 data was not being buffered properly and had various logic bugs. 4758 This also affects blocking I/O when the data being decoded is a 4759 certain size. 4760 [Steve Henson] 4761 4762 *) Various S/MIME bugfixes and compatibility changes: 4763 output correct application/pkcs7 MIME type if 4764 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures. 4765 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening 4766 of files as .eml work). Correctly handle very long lines in MIME 4767 parser. 4768 [Steve Henson] 4769 4770 Changes between 0.9.7a and 0.9.7b [10 Apr 2003] 4771 4772 *) Countermeasure against the Klima-Pokorny-Rosa extension of 4773 Bleichbacher's attack on PKCS #1 v1.5 padding: treat 4774 a protocol version number mismatch like a decryption error 4775 in ssl3_get_client_key_exchange (ssl/s3_srvr.c). 4776 [Bodo Moeller] 4777 4778 *) Turn on RSA blinding by default in the default implementation 4779 to avoid a timing attack. Applications that don't want it can call 4780 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. 4781 They would be ill-advised to do so in most cases. 4782 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] 4783 4784 *) Change RSA blinding code so that it works when the PRNG is not 4785 seeded (in this case, the secret RSA exponent is abused as 4786 an unpredictable seed -- if it is not unpredictable, there 4787 is no point in blinding anyway). Make RSA blinding thread-safe 4788 by remembering the creator's thread ID in rsa->blinding and 4789 having all other threads use local one-time blinding factors 4790 (this requires more computation than sharing rsa->blinding, but 4791 avoids excessive locking; and if an RSA object is not shared 4792 between threads, blinding will still be very fast). 4793 [Bodo Moeller] 4794 4795 *) Fixed a typo bug that would cause ENGINE_set_default() to set an 4796 ENGINE as defaults for all supported algorithms irrespective of 4797 the 'flags' parameter. 'flags' is now honoured, so applications 4798 should make sure they are passing it correctly. 4799 [Geoff Thorpe] 4800 4801 *) Target "mingw" now allows native Windows code to be generated in 4802 the Cygwin environment as well as with the MinGW compiler. 4803 [Ulf Moeller] 4804 4805 Changes between 0.9.7 and 0.9.7a [19 Feb 2003] 4806 4807 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked 4808 via timing by performing a MAC computation even if incorrrect 4809 block cipher padding has been found. This is a countermeasure 4810 against active attacks where the attacker has to distinguish 4811 between bad padding and a MAC verification error. (CVE-2003-0078) 4812 4813 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), 4814 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and 4815 Martin Vuagnoux (EPFL, Ilion)] 4816 4817 *) Make the no-err option work as intended. The intention with no-err 4818 is not to have the whole error stack handling routines removed from 4819 libcrypto, it's only intended to remove all the function name and 4820 reason texts, thereby removing some of the footprint that may not 4821 be interesting if those errors aren't displayed anyway. 4822 4823 NOTE: it's still possible for any application or module to have it's 4824 own set of error texts inserted. The routines are there, just not 4825 used by default when no-err is given. 4826 [Richard Levitte] 4827 4828 *) Add support for FreeBSD on IA64. 4829 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454] 4830 4831 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT 4832 Kerberos function mit_des_cbc_cksum(). Before this change, 4833 the value returned by DES_cbc_cksum() was like the one from 4834 mit_des_cbc_cksum(), except the bytes were swapped. 4835 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte] 4836 4837 *) Allow an application to disable the automatic SSL chain building. 4838 Before this a rather primitive chain build was always performed in 4839 ssl3_output_cert_chain(): an application had no way to send the 4840 correct chain if the automatic operation produced an incorrect result. 4841 4842 Now the chain builder is disabled if either: 4843 4844 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert(). 4845 4846 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set. 4847 4848 The reasoning behind this is that an application would not want the 4849 auto chain building to take place if extra chain certificates are 4850 present and it might also want a means of sending no additional 4851 certificates (for example the chain has two certificates and the 4852 root is omitted). 4853 [Steve Henson] 4854 4855 *) Add the possibility to build without the ENGINE framework. 4856 [Steven Reddie <smr@essemer.com.au> via Richard Levitte] 4857 4858 *) Under Win32 gmtime() can return NULL: check return value in 4859 OPENSSL_gmtime(). Add error code for case where gmtime() fails. 4860 [Steve Henson] 4861 4862 *) DSA routines: under certain error conditions uninitialized BN objects 4863 could be freed. Solution: make sure initialization is performed early 4864 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>, 4865 Nils Larsch <nla@trustcenter.de> via PR#459) 4866 [Lutz Jaenicke] 4867 4868 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly 4869 checked on reconnect on the client side, therefore session resumption 4870 could still fail with a "ssl session id is different" error. This 4871 behaviour is masked when SSL_OP_ALL is used due to 4872 SSL_OP_MICROSOFT_SESS_ID_BUG being set. 4873 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as 4874 followup to PR #377. 4875 [Lutz Jaenicke] 4876 4877 *) IA-32 assembler support enhancements: unified ELF targets, support 4878 for SCO/Caldera platforms, fix for Cygwin shared build. 4879 [Andy Polyakov] 4880 4881 *) Add support for FreeBSD on sparc64. As a consequence, support for 4882 FreeBSD on non-x86 processors is separate from x86 processors on 4883 the config script, much like the NetBSD support. 4884 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>] 4885 4886 Changes between 0.9.6h and 0.9.7 [31 Dec 2002] 4887 4888 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after 4889 OpenSSL 0.9.7.] 4890 4891 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED 4892 code (06) was taken as the first octet of the session ID and the last 4893 octet was ignored consequently. As a result SSLv2 client side session 4894 caching could not have worked due to the session ID mismatch between 4895 client and server. 4896 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as 4897 PR #377. 4898 [Lutz Jaenicke] 4899 4900 *) Change the declaration of needed Kerberos libraries to use EX_LIBS 4901 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is 4902 removed entirely. 4903 [Richard Levitte] 4904 4905 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it 4906 seems that in spite of existing for more than a year, many application 4907 author have done nothing to provide the necessary callbacks, which 4908 means that this particular engine will not work properly anywhere. 4909 This is a very unfortunate situation which forces us, in the name 4910 of usability, to give the hw_ncipher.c a static lock, which is part 4911 of libcrypto. 4912 NOTE: This is for the 0.9.7 series ONLY. This hack will never 4913 appear in 0.9.8 or later. We EXPECT application authors to have 4914 dealt properly with this when 0.9.8 is released (unless we actually 4915 make such changes in the libcrypto locking code that changes will 4916 have to be made anyway). 4917 [Richard Levitte] 4918 4919 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content 4920 octets have been read, EOF or an error occurs. Without this change 4921 some truncated ASN1 structures will not produce an error. 4922 [Steve Henson] 4923 4924 *) Disable Heimdal support, since it hasn't been fully implemented. 4925 Still give the possibility to force the use of Heimdal, but with 4926 warnings and a request that patches get sent to openssl-dev. 4927 [Richard Levitte] 4928 4929 *) Add the VC-CE target, introduce the WINCE sysname, and add 4930 INSTALL.WCE and appropriate conditionals to make it build. 4931 [Steven Reddie <smr@essemer.com.au> via Richard Levitte] 4932 4933 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and 4934 cygssl-x.y.z.dll, where x, y and z are the major, minor and 4935 edit numbers of the version. 4936 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte] 4937 4938 *) Introduce safe string copy and catenation functions 4939 (BUF_strlcpy() and BUF_strlcat()). 4940 [Ben Laurie (CHATS) and Richard Levitte] 4941 4942 *) Avoid using fixed-size buffers for one-line DNs. 4943 [Ben Laurie (CHATS)] 4944 4945 *) Add BUF_MEM_grow_clean() to avoid information leakage when 4946 resizing buffers containing secrets, and use where appropriate. 4947 [Ben Laurie (CHATS)] 4948 4949 *) Avoid using fixed size buffers for configuration file location. 4950 [Ben Laurie (CHATS)] 4951 4952 *) Avoid filename truncation for various CA files. 4953 [Ben Laurie (CHATS)] 4954 4955 *) Use sizeof in preference to magic numbers. 4956 [Ben Laurie (CHATS)] 4957 4958 *) Avoid filename truncation in cert requests. 4959 [Ben Laurie (CHATS)] 4960 4961 *) Add assertions to check for (supposedly impossible) buffer 4962 overflows. 4963 [Ben Laurie (CHATS)] 4964 4965 *) Don't cache truncated DNS entries in the local cache (this could 4966 potentially lead to a spoofing attack). 4967 [Ben Laurie (CHATS)] 4968 4969 *) Fix various buffers to be large enough for hex/decimal 4970 representations in a platform independent manner. 4971 [Ben Laurie (CHATS)] 4972 4973 *) Add CRYPTO_realloc_clean() to avoid information leakage when 4974 resizing buffers containing secrets, and use where appropriate. 4975 [Ben Laurie (CHATS)] 4976 4977 *) Add BIO_indent() to avoid much slightly worrying code to do 4978 indents. 4979 [Ben Laurie (CHATS)] 4980 4981 *) Convert sprintf()/BIO_puts() to BIO_printf(). 4982 [Ben Laurie (CHATS)] 4983 4984 *) buffer_gets() could terminate with the buffer only half 4985 full. Fixed. 4986 [Ben Laurie (CHATS)] 4987 4988 *) Add assertions to prevent user-supplied crypto functions from 4989 overflowing internal buffers by having large block sizes, etc. 4990 [Ben Laurie (CHATS)] 4991 4992 *) New OPENSSL_assert() macro (similar to assert(), but enabled 4993 unconditionally). 4994 [Ben Laurie (CHATS)] 4995 4996 *) Eliminate unused copy of key in RC4. 4997 [Ben Laurie (CHATS)] 4998 4999 *) Eliminate unused and incorrectly sized buffers for IV in pem.h. 5000 [Ben Laurie (CHATS)] 5001 5002 *) Fix off-by-one error in EGD path. 5003 [Ben Laurie (CHATS)] 5004 5005 *) If RANDFILE path is too long, ignore instead of truncating. 5006 [Ben Laurie (CHATS)] 5007 5008 *) Eliminate unused and incorrectly sized X.509 structure 5009 CBCParameter. 5010 [Ben Laurie (CHATS)] 5011 5012 *) Eliminate unused and dangerous function knumber(). 5013 [Ben Laurie (CHATS)] 5014 5015 *) Eliminate unused and dangerous structure, KSSL_ERR. 5016 [Ben Laurie (CHATS)] 5017 5018 *) Protect against overlong session ID context length in an encoded 5019 session object. Since these are local, this does not appear to be 5020 exploitable. 5021 [Ben Laurie (CHATS)] 5022 5023 *) Change from security patch (see 0.9.6e below) that did not affect 5024 the 0.9.6 release series: 5025 5026 Remote buffer overflow in SSL3 protocol - an attacker could 5027 supply an oversized master key in Kerberos-enabled versions. 5028 (CVE-2002-0657) 5029 [Ben Laurie (CHATS)] 5030 5031 *) Change the SSL kerb5 codes to match RFC 2712. 5032 [Richard Levitte] 5033 5034 *) Make -nameopt work fully for req and add -reqopt switch. 5035 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson] 5036 5037 *) The "block size" for block ciphers in CFB and OFB mode should be 1. 5038 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>] 5039 5040 *) Make sure tests can be performed even if the corresponding algorithms 5041 have been removed entirely. This was also the last step to make 5042 OpenSSL compilable with DJGPP under all reasonable conditions. 5043 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>] 5044 5045 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT 5046 to allow version independent disabling of normally unselected ciphers, 5047 which may be activated as a side-effect of selecting a single cipher. 5048 5049 (E.g., cipher list string "RSA" enables ciphersuites that are left 5050 out of "ALL" because they do not provide symmetric encryption. 5051 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.) 5052 [Lutz Jaenicke, Bodo Moeller] 5053 5054 *) Add appropriate support for separate platform-dependent build 5055 directories. The recommended way to make a platform-dependent 5056 build directory is the following (tested on Linux), maybe with 5057 some local tweaks: 5058 5059 # Place yourself outside of the OpenSSL source tree. In 5060 # this example, the environment variable OPENSSL_SOURCE 5061 # is assumed to contain the absolute OpenSSL source directory. 5062 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`" 5063 cd objtree/"`uname -s`-`uname -r`-`uname -m`" 5064 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do 5065 mkdir -p `dirname $F` 5066 ln -s $OPENSSL_SOURCE/$F $F 5067 done 5068 5069 To be absolutely sure not to disturb the source tree, a "make clean" 5070 is a good thing. If it isn't successfull, don't worry about it, 5071 it probably means the source directory is very clean. 5072 [Richard Levitte] 5073 5074 *) Make sure any ENGINE control commands make local copies of string 5075 pointers passed to them whenever necessary. Otherwise it is possible 5076 the caller may have overwritten (or deallocated) the original string 5077 data when a later ENGINE operation tries to use the stored values. 5078 [G��tz Babin-Ebell <babinebell@trustcenter.de>] 5079 5080 *) Improve diagnostics in file reading and command-line digests. 5081 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>] 5082 5083 *) Add AES modes CFB and OFB to the object database. Correct an 5084 error in AES-CFB decryption. 5085 [Richard Levitte] 5086 5087 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this 5088 allows existing EVP_CIPHER_CTX structures to be reused after 5089 calling EVP_*Final(). This behaviour is used by encryption 5090 BIOs and some applications. This has the side effect that 5091 applications must explicitly clean up cipher contexts with 5092 EVP_CIPHER_CTX_cleanup() or they will leak memory. 5093 [Steve Henson] 5094 5095 *) Check the values of dna and dnb in bn_mul_recursive before calling 5096 bn_mul_comba (a non zero value means the a or b arrays do not contain 5097 n2 elements) and fallback to bn_mul_normal if either is not zero. 5098 [Steve Henson] 5099 5100 *) Fix escaping of non-ASCII characters when using the -subj option 5101 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>) 5102 [Lutz Jaenicke] 5103 5104 *) Make object definitions compliant to LDAP (RFC2256): SN is the short 5105 form for "surname", serialNumber has no short form. 5106 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798; 5107 therefore remove "mail" short name for "internet 7". 5108 The OID for unique identifiers in X509 certificates is 5109 x500UniqueIdentifier, not uniqueIdentifier. 5110 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>) 5111 [Lutz Jaenicke] 5112 5113 *) Add an "init" command to the ENGINE config module and auto initialize 5114 ENGINEs. Without any "init" command the ENGINE will be initialized 5115 after all ctrl commands have been executed on it. If init=1 the 5116 ENGINE is initailized at that point (ctrls before that point are run 5117 on the uninitialized ENGINE and after on the initialized one). If 5118 init=0 then the ENGINE will not be iniatialized at all. 5119 [Steve Henson] 5120 5121 *) Fix the 'app_verify_callback' interface so that the user-defined 5122 argument is actually passed to the callback: In the 5123 SSL_CTX_set_cert_verify_callback() prototype, the callback 5124 declaration has been changed from 5125 int (*cb)() 5126 into 5127 int (*cb)(X509_STORE_CTX *,void *); 5128 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call 5129 i=s->ctx->app_verify_callback(&ctx) 5130 has been changed into 5131 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg). 5132 5133 To update applications using SSL_CTX_set_cert_verify_callback(), 5134 a dummy argument can be added to their callback functions. 5135 [D. K. Smetters <smetters@parc.xerox.com>] 5136 5137 *) Added the '4758cca' ENGINE to support IBM 4758 cards. 5138 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe] 5139 5140 *) Add and OPENSSL_LOAD_CONF define which will cause 5141 OpenSSL_add_all_algorithms() to load the openssl.cnf config file. 5142 This allows older applications to transparently support certain 5143 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading. 5144 Two new functions OPENSSL_add_all_algorithms_noconf() which will never 5145 load the config file and OPENSSL_add_all_algorithms_conf() which will 5146 always load it have also been added. 5147 [Steve Henson] 5148 5149 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES. 5150 Adjust NIDs and EVP layer. 5151 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] 5152 5153 *) Config modules support in openssl utility. 5154 5155 Most commands now load modules from the config file, 5156 though in a few (such as version) this isn't done 5157 because it couldn't be used for anything. 5158 5159 In the case of ca and req the config file used is 5160 the same as the utility itself: that is the -config 5161 command line option can be used to specify an 5162 alternative file. 5163 [Steve Henson] 5164 5165 *) Move default behaviour from OPENSSL_config(). If appname is NULL 5166 use "openssl_conf" if filename is NULL use default openssl config file. 5167 [Steve Henson] 5168 5169 *) Add an argument to OPENSSL_config() to allow the use of an alternative 5170 config section name. Add a new flag to tolerate a missing config file 5171 and move code to CONF_modules_load_file(). 5172 [Steve Henson] 5173 5174 *) Support for crypto accelerator cards from Accelerated Encryption 5175 Processing, www.aep.ie. (Use engine 'aep') 5176 The support was copied from 0.9.6c [engine] and adapted/corrected 5177 to work with the new engine framework. 5178 [AEP Inc. and Richard Levitte] 5179 5180 *) Support for SureWare crypto accelerator cards from Baltimore 5181 Technologies. (Use engine 'sureware') 5182 The support was copied from 0.9.6c [engine] and adapted 5183 to work with the new engine framework. 5184 [Richard Levitte] 5185 5186 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually 5187 make the newer ENGINE framework commands for the CHIL engine work. 5188 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte] 5189 5190 *) Make it possible to produce shared libraries on ReliantUNIX. 5191 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte] 5192 5193 *) Add the configuration target debug-linux-ppro. 5194 Make 'openssl rsa' use the general key loading routines 5195 implemented in apps.c, and make those routines able to 5196 handle the key format FORMAT_NETSCAPE and the variant 5197 FORMAT_IISSGC. 5198 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 5199 5200 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). 5201 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 5202 5203 *) Add -keyform to rsautl, and document -engine. 5204 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>] 5205 5206 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new 5207 BIO_R_NO_SUCH_FILE error code rather than the generic 5208 ERR_R_SYS_LIB error code if fopen() fails with ENOENT. 5209 [Ben Laurie] 5210 5211 *) Add new functions 5212 ERR_peek_last_error 5213 ERR_peek_last_error_line 5214 ERR_peek_last_error_line_data. 5215 These are similar to 5216 ERR_peek_error 5217 ERR_peek_error_line 5218 ERR_peek_error_line_data, 5219 but report on the latest error recorded rather than the first one 5220 still in the error queue. 5221 [Ben Laurie, Bodo Moeller] 5222 5223 *) default_algorithms option in ENGINE config module. This allows things 5224 like: 5225 default_algorithms = ALL 5226 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS 5227 [Steve Henson] 5228 5229 *) Prelminary ENGINE config module. 5230 [Steve Henson] 5231 5232 *) New experimental application configuration code. 5233 [Steve Henson] 5234 5235 *) Change the AES code to follow the same name structure as all other 5236 symmetric ciphers, and behave the same way. Move everything to 5237 the directory crypto/aes, thereby obsoleting crypto/rijndael. 5238 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] 5239 5240 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c. 5241 [Ben Laurie and Theo de Raadt] 5242 5243 *) Add option to output public keys in req command. 5244 [Massimiliano Pala madwolf@openca.org] 5245 5246 *) Use wNAFs in EC_POINTs_mul() for improved efficiency 5247 (up to about 10% better than before for P-192 and P-224). 5248 [Bodo Moeller] 5249 5250 *) New functions/macros 5251 5252 SSL_CTX_set_msg_callback(ctx, cb) 5253 SSL_CTX_set_msg_callback_arg(ctx, arg) 5254 SSL_set_msg_callback(ssl, cb) 5255 SSL_set_msg_callback_arg(ssl, arg) 5256 5257 to request calling a callback function 5258 5259 void cb(int write_p, int version, int content_type, 5260 const void *buf, size_t len, SSL *ssl, void *arg) 5261 5262 whenever a protocol message has been completely received 5263 (write_p == 0) or sent (write_p == 1). Here 'version' is the 5264 protocol version according to which the SSL library interprets 5265 the current protocol message (SSL2_VERSION, SSL3_VERSION, or 5266 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or 5267 the content type as defined in the SSL 3.0/TLS 1.0 protocol 5268 specification (change_cipher_spec(20), alert(21), handshake(22)). 5269 'buf' and 'len' point to the actual message, 'ssl' to the 5270 SSL object, and 'arg' is the application-defined value set by 5271 SSL[_CTX]_set_msg_callback_arg(). 5272 5273 'openssl s_client' and 'openssl s_server' have new '-msg' options 5274 to enable a callback that displays all protocol messages. 5275 [Bodo Moeller] 5276 5277 *) Change the shared library support so shared libraries are built as 5278 soon as the corresponding static library is finished, and thereby get 5279 openssl and the test programs linked against the shared library. 5280 This still only happens when the keyword "shard" has been given to 5281 the configuration scripts. 5282 5283 NOTE: shared library support is still an experimental thing, and 5284 backward binary compatibility is still not guaranteed. 5285 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte] 5286 5287 *) Add support for Subject Information Access extension. 5288 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>] 5289 5290 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero 5291 additional bytes when new memory had to be allocated, not just 5292 when reusing an existing buffer. 5293 [Bodo Moeller] 5294 5295 *) New command line and configuration option 'utf8' for the req command. 5296 This allows field values to be specified as UTF8 strings. 5297 [Steve Henson] 5298 5299 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel 5300 runs for the former and machine-readable output for the latter. 5301 [Ben Laurie] 5302 5303 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion 5304 of the e-mail address in the DN (i.e., it will go into a certificate 5305 extension only). The new configuration file option 'email_in_dn = no' 5306 has the same effect. 5307 [Massimiliano Pala madwolf@openca.org] 5308 5309 *) Change all functions with names starting with des_ to be starting 5310 with DES_ instead. Add wrappers that are compatible with libdes, 5311 but are named _ossl_old_des_*. Finally, add macros that map the 5312 des_* symbols to the corresponding _ossl_old_des_* if libdes 5313 compatibility is desired. If OpenSSL 0.9.6c compatibility is 5314 desired, the des_* symbols will be mapped to DES_*, with one 5315 exception. 5316 5317 Since we provide two compatibility mappings, the user needs to 5318 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes 5319 compatibility is desired. The default (i.e., when that macro 5320 isn't defined) is OpenSSL 0.9.6c compatibility. 5321 5322 There are also macros that enable and disable the support of old 5323 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT 5324 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those 5325 are defined, the default will apply: to support the old des routines. 5326 5327 In either case, one must include openssl/des.h to get the correct 5328 definitions. Do not try to just include openssl/des_old.h, that 5329 won't work. 5330 5331 NOTE: This is a major break of an old API into a new one. Software 5332 authors are encouraged to switch to the DES_ style functions. Some 5333 time in the future, des_old.h and the libdes compatibility functions 5334 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the 5335 default), and then completely removed. 5336 [Richard Levitte] 5337 5338 *) Test for certificates which contain unsupported critical extensions. 5339 If such a certificate is found during a verify operation it is 5340 rejected by default: this behaviour can be overridden by either 5341 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or 5342 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function 5343 X509_supported_extension() has also been added which returns 1 if a 5344 particular extension is supported. 5345 [Steve Henson] 5346 5347 *) Modify the behaviour of EVP cipher functions in similar way to digests 5348 to retain compatibility with existing code. 5349 [Steve Henson] 5350 5351 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain 5352 compatibility with existing code. In particular the 'ctx' parameter does 5353 not have to be to be initialized before the call to EVP_DigestInit() and 5354 it is tidied up after a call to EVP_DigestFinal(). New function 5355 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function 5356 EVP_MD_CTX_copy() changed to not require the destination to be 5357 initialized valid and new function EVP_MD_CTX_copy_ex() added which 5358 requires the destination to be valid. 5359 5360 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(), 5361 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex(). 5362 [Steve Henson] 5363 5364 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it 5365 so that complete 'Handshake' protocol structures are kept in memory 5366 instead of overwriting 'msg_type' and 'length' with 'body' data. 5367 [Bodo Moeller] 5368 5369 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32. 5370 [Massimo Santin via Richard Levitte] 5371 5372 *) Major restructuring to the underlying ENGINE code. This includes 5373 reduction of linker bloat, separation of pure "ENGINE" manipulation 5374 (initialisation, etc) from functionality dealing with implementations 5375 of specific crypto iterfaces. This change also introduces integrated 5376 support for symmetric ciphers and digest implementations - so ENGINEs 5377 can now accelerate these by providing EVP_CIPHER and EVP_MD 5378 implementations of their own. This is detailed in crypto/engine/README 5379 as it couldn't be adequately described here. However, there are a few 5380 API changes worth noting - some RSA, DSA, DH, and RAND functions that 5381 were changed in the original introduction of ENGINE code have now 5382 reverted back - the hooking from this code to ENGINE is now a good 5383 deal more passive and at run-time, operations deal directly with 5384 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than 5385 dereferencing through an ENGINE pointer any more. Also, the ENGINE 5386 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed - 5387 they were not being used by the framework as there is no concept of a 5388 BIGNUM_METHOD and they could not be generalised to the new 5389 'ENGINE_TABLE' mechanism that underlies the new code. Similarly, 5390 ENGINE_cpy() has been removed as it cannot be consistently defined in 5391 the new code. 5392 [Geoff Thorpe] 5393 5394 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds. 5395 [Steve Henson] 5396 5397 *) Change mkdef.pl to sort symbols that get the same entry number, 5398 and make sure the automatically generated functions ERR_load_* 5399 become part of libeay.num as well. 5400 [Richard Levitte] 5401 5402 *) New function SSL_renegotiate_pending(). This returns true once 5403 renegotiation has been requested (either SSL_renegotiate() call 5404 or HelloRequest/ClientHello receveived from the peer) and becomes 5405 false once a handshake has been completed. 5406 (For servers, SSL_renegotiate() followed by SSL_do_handshake() 5407 sends a HelloRequest, but does not ensure that a handshake takes 5408 place. SSL_renegotiate_pending() is useful for checking if the 5409 client has followed the request.) 5410 [Bodo Moeller] 5411 5412 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION. 5413 By default, clients may request session resumption even during 5414 renegotiation (if session ID contexts permit); with this option, 5415 session resumption is possible only in the first handshake. 5416 5417 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes 5418 more bits available for options that should not be part of 5419 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION). 5420 [Bodo Moeller] 5421 5422 *) Add some demos for certificate and certificate request creation. 5423 [Steve Henson] 5424 5425 *) Make maximum certificate chain size accepted from the peer application 5426 settable (SSL*_get/set_max_cert_list()), as proposed by 5427 "Douglas E. Engert" <deengert@anl.gov>. 5428 [Lutz Jaenicke] 5429 5430 *) Add support for shared libraries for Unixware-7 5431 (Boyd Lynn Gerber <gerberb@zenez.com>). 5432 [Lutz Jaenicke] 5433 5434 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to 5435 be done prior to destruction. Use this to unload error strings from 5436 ENGINEs that load their own error strings. NB: This adds two new API 5437 functions to "get" and "set" this destroy handler in an ENGINE. 5438 [Geoff Thorpe] 5439 5440 *) Alter all existing ENGINE implementations (except "openssl" and 5441 "openbsd") to dynamically instantiate their own error strings. This 5442 makes them more flexible to be built both as statically-linked ENGINEs 5443 and self-contained shared-libraries loadable via the "dynamic" ENGINE. 5444 Also, add stub code to each that makes building them as self-contained 5445 shared-libraries easier (see README.ENGINE). 5446 [Geoff Thorpe] 5447 5448 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE 5449 implementations into applications that are completely implemented in 5450 self-contained shared-libraries. The "dynamic" ENGINE exposes control 5451 commands that can be used to configure what shared-library to load and 5452 to control aspects of the way it is handled. Also, made an update to 5453 the README.ENGINE file that brings its information up-to-date and 5454 provides some information and instructions on the "dynamic" ENGINE 5455 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc). 5456 [Geoff Thorpe] 5457 5458 *) Make it possible to unload ranges of ERR strings with a new 5459 "ERR_unload_strings" function. 5460 [Geoff Thorpe] 5461 5462 *) Add a copy() function to EVP_MD. 5463 [Ben Laurie] 5464 5465 *) Make EVP_MD routines take a context pointer instead of just the 5466 md_data void pointer. 5467 [Ben Laurie] 5468 5469 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates 5470 that the digest can only process a single chunk of data 5471 (typically because it is provided by a piece of 5472 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application 5473 is only going to provide a single chunk of data, and hence the 5474 framework needn't accumulate the data for oneshot drivers. 5475 [Ben Laurie] 5476 5477 *) As with "ERR", make it possible to replace the underlying "ex_data" 5478 functions. This change also alters the storage and management of global 5479 ex_data state - it's now all inside ex_data.c and all "class" code (eg. 5480 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class 5481 index counters. The API functions that use this state have been changed 5482 to take a "class_index" rather than pointers to the class's local STACK 5483 and counter, and there is now an API function to dynamically create new 5484 classes. This centralisation allows us to (a) plug a lot of the 5485 thread-safety problems that existed, and (b) makes it possible to clean 5486 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b) 5487 such data would previously have always leaked in application code and 5488 workarounds were in place to make the memory debugging turn a blind eye 5489 to it. Application code that doesn't use this new function will still 5490 leak as before, but their memory debugging output will announce it now 5491 rather than letting it slide. 5492 5493 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change 5494 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now 5495 has a return value to indicate success or failure. 5496 [Geoff Thorpe] 5497 5498 *) Make it possible to replace the underlying "ERR" functions such that the 5499 global state (2 LHASH tables and 2 locks) is only used by the "default" 5500 implementation. This change also adds two functions to "get" and "set" 5501 the implementation prior to it being automatically set the first time 5502 any other ERR function takes place. Ie. an application can call "get", 5503 pass the return value to a module it has just loaded, and that module 5504 can call its own "set" function using that value. This means the 5505 module's "ERR" operations will use (and modify) the error state in the 5506 application and not in its own statically linked copy of OpenSSL code. 5507 [Geoff Thorpe] 5508 5509 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment 5510 reference counts. This performs normal REF_PRINT/REF_CHECK macros on 5511 the operation, and provides a more encapsulated way for external code 5512 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code 5513 to use these functions rather than manually incrementing the counts. 5514 5515 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()". 5516 [Geoff Thorpe] 5517 5518 *) Add EVP test program. 5519 [Ben Laurie] 5520 5521 *) Add symmetric cipher support to ENGINE. Expect the API to change! 5522 [Ben Laurie] 5523 5524 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name() 5525 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(), 5526 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate(). 5527 These allow a CRL to be built without having to access X509_CRL fields 5528 directly. Modify 'ca' application to use new functions. 5529 [Steve Henson] 5530 5531 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended 5532 bug workarounds. Rollback attack detection is a security feature. 5533 The problem will only arise on OpenSSL servers when TLSv1 is not 5534 available (sslv3_server_method() or SSL_OP_NO_TLSv1). 5535 Software authors not wanting to support TLSv1 will have special reasons 5536 for their choice and can explicitly enable this option. 5537 [Bodo Moeller, Lutz Jaenicke] 5538 5539 *) Rationalise EVP so it can be extended: don't include a union of 5540 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX 5541 (similar to those existing for EVP_CIPHER_CTX). 5542 Usage example: 5543 5544 EVP_MD_CTX md; 5545 5546 EVP_MD_CTX_init(&md); /* new function call */ 5547 EVP_DigestInit(&md, EVP_sha1()); 5548 EVP_DigestUpdate(&md, in, len); 5549 EVP_DigestFinal(&md, out, NULL); 5550 EVP_MD_CTX_cleanup(&md); /* new function call */ 5551 5552 [Ben Laurie] 5553 5554 *) Make DES key schedule conform to the usual scheme, as well as 5555 correcting its structure. This means that calls to DES functions 5556 now have to pass a pointer to a des_key_schedule instead of a 5557 plain des_key_schedule (which was actually always a pointer 5558 anyway): E.g., 5559 5560 des_key_schedule ks; 5561 5562 des_set_key_checked(..., &ks); 5563 des_ncbc_encrypt(..., &ks, ...); 5564 5565 (Note that a later change renames 'des_...' into 'DES_...'.) 5566 [Ben Laurie] 5567 5568 *) Initial reduction of linker bloat: the use of some functions, such as 5569 PEM causes large amounts of unused functions to be linked in due to 5570 poor organisation. For example pem_all.c contains every PEM function 5571 which has a knock on effect of linking in large amounts of (unused) 5572 ASN1 code. Grouping together similar functions and splitting unrelated 5573 functions prevents this. 5574 [Steve Henson] 5575 5576 *) Cleanup of EVP macros. 5577 [Ben Laurie] 5578 5579 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the 5580 correct _ecb suffix. 5581 [Ben Laurie] 5582 5583 *) Add initial OCSP responder support to ocsp application. The 5584 revocation information is handled using the text based index 5585 use by the ca application. The responder can either handle 5586 requests generated internally, supplied in files (for example 5587 via a CGI script) or using an internal minimal server. 5588 [Steve Henson] 5589 5590 *) Add configuration choices to get zlib compression for TLS. 5591 [Richard Levitte] 5592 5593 *) Changes to Kerberos SSL for RFC 2712 compliance: 5594 1. Implemented real KerberosWrapper, instead of just using 5595 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>] 5596 2. Implemented optional authenticator field of KerberosWrapper. 5597 5598 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req, 5599 and authenticator structs; see crypto/krb5/. 5600 5601 Generalized Kerberos calls to support multiple Kerberos libraries. 5602 [Vern Staats <staatsvr@asc.hpc.mil>, 5603 Jeffrey Altman <jaltman@columbia.edu> 5604 via Richard Levitte] 5605 5606 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it 5607 already does with RSA. testdsa.h now has 'priv_key/pub_key' 5608 values for each of the key sizes rather than having just 5609 parameters (and 'speed' generating keys each time). 5610 [Geoff Thorpe] 5611 5612 *) Speed up EVP routines. 5613 Before: 5614encrypt 5615type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes 5616des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k 5617des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k 5618des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k 5619decrypt 5620des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k 5621des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k 5622des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k 5623 After: 5624encrypt 5625des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k 5626decrypt 5627des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k 5628 [Ben Laurie] 5629 5630 *) Added the OS2-EMX target. 5631 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte] 5632 5633 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions 5634 to support NCONF routines in extension code. New function CONF_set_nconf() 5635 to allow functions which take an NCONF to also handle the old LHASH 5636 structure: this means that the old CONF compatible routines can be 5637 retained (in particular wrt extensions) without having to duplicate the 5638 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack. 5639 [Steve Henson] 5640 5641 *) Enhance the general user interface with mechanisms for inner control 5642 and with possibilities to have yes/no kind of prompts. 5643 [Richard Levitte] 5644 5645 *) Change all calls to low level digest routines in the library and 5646 applications to use EVP. Add missing calls to HMAC_cleanup() and 5647 don't assume HMAC_CTX can be copied using memcpy(). 5648 [Verdon Walker <VWalker@novell.com>, Steve Henson] 5649 5650 *) Add the possibility to control engines through control names but with 5651 arbitrary arguments instead of just a string. 5652 Change the key loaders to take a UI_METHOD instead of a callback 5653 function pointer. NOTE: this breaks binary compatibility with earlier 5654 versions of OpenSSL [engine]. 5655 Adapt the nCipher code for these new conditions and add a card insertion 5656 callback. 5657 [Richard Levitte] 5658 5659 *) Enhance the general user interface with mechanisms to better support 5660 dialog box interfaces, application-defined prompts, the possibility 5661 to use defaults (for example default passwords from somewhere else) 5662 and interrupts/cancellations. 5663 [Richard Levitte] 5664 5665 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name 5666 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility. 5667 [Steve Henson] 5668 5669 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also 5670 tidy up some unnecessarily weird code in 'sk_new()'). 5671 [Geoff, reported by Diego Tartara <dtartara@novamens.com>] 5672 5673 *) Change the key loading routines for ENGINEs to use the same kind 5674 callback (pem_password_cb) as all other routines that need this 5675 kind of callback. 5676 [Richard Levitte] 5677 5678 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with 5679 256 bit (=32 byte) keys. Of course seeding with more entropy bytes 5680 than this minimum value is recommended. 5681 [Lutz Jaenicke] 5682 5683 *) New random seeder for OpenVMS, using the system process statistics 5684 that are easily reachable. 5685 [Richard Levitte] 5686 5687 *) Windows apparently can't transparently handle global 5688 variables defined in DLLs. Initialisations such as: 5689 5690 const ASN1_ITEM *it = &ASN1_INTEGER_it; 5691 5692 wont compile. This is used by the any applications that need to 5693 declare their own ASN1 modules. This was fixed by adding the option 5694 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly 5695 needed for static libraries under Win32. 5696 [Steve Henson] 5697 5698 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle 5699 setting of purpose and trust fields. New X509_STORE trust and 5700 purpose functions and tidy up setting in other SSL functions. 5701 [Steve Henson] 5702 5703 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE 5704 structure. These are inherited by X509_STORE_CTX when it is 5705 initialised. This allows various defaults to be set in the 5706 X509_STORE structure (such as flags for CRL checking and custom 5707 purpose or trust settings) for functions which only use X509_STORE_CTX 5708 internally such as S/MIME. 5709 5710 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and 5711 trust settings if they are not set in X509_STORE. This allows X509_STORE 5712 purposes and trust (in S/MIME for example) to override any set by default. 5713 5714 Add command line options for CRL checking to smime, s_client and s_server 5715 applications. 5716 [Steve Henson] 5717 5718 *) Initial CRL based revocation checking. If the CRL checking flag(s) 5719 are set then the CRL is looked up in the X509_STORE structure and 5720 its validity and signature checked, then if the certificate is found 5721 in the CRL the verify fails with a revoked error. 5722 5723 Various new CRL related callbacks added to X509_STORE_CTX structure. 5724 5725 Command line options added to 'verify' application to support this. 5726 5727 This needs some additional work, such as being able to handle multiple 5728 CRLs with different times, extension based lookup (rather than just 5729 by subject name) and ultimately more complete V2 CRL extension 5730 handling. 5731 [Steve Henson] 5732 5733 *) Add a general user interface API (crypto/ui/). This is designed 5734 to replace things like des_read_password and friends (backward 5735 compatibility functions using this new API are provided). 5736 The purpose is to remove prompting functions from the DES code 5737 section as well as provide for prompting through dialog boxes in 5738 a window system and the like. 5739 [Richard Levitte] 5740 5741 *) Add "ex_data" support to ENGINE so implementations can add state at a 5742 per-structure level rather than having to store it globally. 5743 [Geoff] 5744 5745 *) Make it possible for ENGINE structures to be copied when retrieved by 5746 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY. 5747 This causes the "original" ENGINE structure to act like a template, 5748 analogous to the RSA vs. RSA_METHOD type of separation. Because of this 5749 operational state can be localised to each ENGINE structure, despite the 5750 fact they all share the same "methods". New ENGINE structures returned in 5751 this case have no functional references and the return value is the single 5752 structural reference. This matches the single structural reference returned 5753 by ENGINE_by_id() normally, when it is incremented on the pre-existing 5754 ENGINE structure. 5755 [Geoff] 5756 5757 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this 5758 needs to match any other type at all we need to manually clear the 5759 tag cache. 5760 [Steve Henson] 5761 5762 *) Changes to the "openssl engine" utility to include; 5763 - verbosity levels ('-v', '-vv', and '-vvv') that provide information 5764 about an ENGINE's available control commands. 5765 - executing control commands from command line arguments using the 5766 '-pre' and '-post' switches. '-post' is only used if '-t' is 5767 specified and the ENGINE is successfully initialised. The syntax for 5768 the individual commands are colon-separated, for example; 5769 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so 5770 [Geoff] 5771 5772 *) New dynamic control command support for ENGINEs. ENGINEs can now 5773 declare their own commands (numbers), names (strings), descriptions, 5774 and input types for run-time discovery by calling applications. A 5775 subset of these commands are implicitly classed as "executable" 5776 depending on their input type, and only these can be invoked through 5777 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this 5778 can be based on user input, config files, etc). The distinction is 5779 that "executable" commands cannot return anything other than a boolean 5780 result and can only support numeric or string input, whereas some 5781 discoverable commands may only be for direct use through 5782 ENGINE_ctrl(), eg. supporting the exchange of binary data, function 5783 pointers, or other custom uses. The "executable" commands are to 5784 support parameterisations of ENGINE behaviour that can be 5785 unambiguously defined by ENGINEs and used consistently across any 5786 OpenSSL-based application. Commands have been added to all the 5787 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow 5788 control over shared-library paths without source code alterations. 5789 [Geoff] 5790 5791 *) Changed all ENGINE implementations to dynamically allocate their 5792 ENGINEs rather than declaring them statically. Apart from this being 5793 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction, 5794 this also allows the implementations to compile without using the 5795 internal engine_int.h header. 5796 [Geoff] 5797 5798 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a 5799 'const' value. Any code that should be able to modify a RAND_METHOD 5800 should already have non-const pointers to it (ie. they should only 5801 modify their own ones). 5802 [Geoff] 5803 5804 *) Made a variety of little tweaks to the ENGINE code. 5805 - "atalla" and "ubsec" string definitions were moved from header files 5806 to C code. "nuron" string definitions were placed in variables 5807 rather than hard-coded - allowing parameterisation of these values 5808 later on via ctrl() commands. 5809 - Removed unused "#if 0"'d code. 5810 - Fixed engine list iteration code so it uses ENGINE_free() to release 5811 structural references. 5812 - Constified the RAND_METHOD element of ENGINE structures. 5813 - Constified various get/set functions as appropriate and added 5814 missing functions (including a catch-all ENGINE_cpy that duplicates 5815 all ENGINE values onto a new ENGINE except reference counts/state). 5816 - Removed NULL parameter checks in get/set functions. Setting a method 5817 or function to NULL is a way of cancelling out a previously set 5818 value. Passing a NULL ENGINE parameter is just plain stupid anyway 5819 and doesn't justify the extra error symbols and code. 5820 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for 5821 flags from engine_int.h to engine.h. 5822 - Changed prototypes for ENGINE handler functions (init(), finish(), 5823 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter. 5824 [Geoff] 5825 5826 *) Implement binary inversion algorithm for BN_mod_inverse in addition 5827 to the algorithm using long division. The binary algorithm can be 5828 used only if the modulus is odd. On 32-bit systems, it is faster 5829 only for relatively small moduli (roughly 20-30% for 128-bit moduli, 5830 roughly 5-15% for 256-bit moduli), so we use it only for moduli 5831 up to 450 bits. In 64-bit environments, the binary algorithm 5832 appears to be advantageous for much longer moduli; here we use it 5833 for moduli up to 2048 bits. 5834 [Bodo Moeller] 5835 5836 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code 5837 could not support the combine flag in choice fields. 5838 [Steve Henson] 5839 5840 *) Add a 'copy_extensions' option to the 'ca' utility. This copies 5841 extensions from a certificate request to the certificate. 5842 [Steve Henson] 5843 5844 *) Allow multiple 'certopt' and 'nameopt' options to be separated 5845 by commas. Add 'namopt' and 'certopt' options to the 'ca' config 5846 file: this allows the display of the certificate about to be 5847 signed to be customised, to allow certain fields to be included 5848 or excluded and extension details. The old system didn't display 5849 multicharacter strings properly, omitted fields not in the policy 5850 and couldn't display additional details such as extensions. 5851 [Steve Henson] 5852 5853 *) Function EC_POINTs_mul for multiple scalar multiplication 5854 of an arbitrary number of elliptic curve points 5855 \sum scalars[i]*points[i], 5856 optionally including the generator defined for the EC_GROUP: 5857 scalar*generator + \sum scalars[i]*points[i]. 5858 5859 EC_POINT_mul is a simple wrapper function for the typical case 5860 that the point list has just one item (besides the optional 5861 generator). 5862 [Bodo Moeller] 5863 5864 *) First EC_METHODs for curves over GF(p): 5865 5866 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr 5867 operations and provides various method functions that can also 5868 operate with faster implementations of modular arithmetic. 5869 5870 EC_GFp_mont_method() reuses most functions that are part of 5871 EC_GFp_simple_method, but uses Montgomery arithmetic. 5872 5873 [Bodo Moeller; point addition and point doubling 5874 implementation directly derived from source code provided by 5875 Lenka Fibikova <fibikova@exp-math.uni-essen.de>] 5876 5877 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h, 5878 crypto/ec/ec_lib.c): 5879 5880 Curves are EC_GROUP objects (with an optional group generator) 5881 based on EC_METHODs that are built into the library. 5882 5883 Points are EC_POINT objects based on EC_GROUP objects. 5884 5885 Most of the framework would be able to handle curves over arbitrary 5886 finite fields, but as there are no obvious types for fields other 5887 than GF(p), some functions are limited to that for now. 5888 [Bodo Moeller] 5889 5890 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires 5891 that the file contains a complete HTTP response. 5892 [Richard Levitte] 5893 5894 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl 5895 change the def and num file printf format specifier from "%-40sXXX" 5896 to "%-39s XXX". The latter will always guarantee a space after the 5897 field while the former will cause them to run together if the field 5898 is 40 of more characters long. 5899 [Steve Henson] 5900 5901 *) Constify the cipher and digest 'method' functions and structures 5902 and modify related functions to take constant EVP_MD and EVP_CIPHER 5903 pointers. 5904 [Steve Henson] 5905 5906 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them 5907 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32. 5908 [Bodo Moeller] 5909 5910 *) Modify EVP_Digest*() routines so they now return values. Although the 5911 internal software routines can never fail additional hardware versions 5912 might. 5913 [Steve Henson] 5914 5915 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts: 5916 5917 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7 5918 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32. 5919 5920 ASN1 error codes 5921 ERR_R_NESTED_ASN1_ERROR 5922 ... 5923 ERR_R_MISSING_ASN1_EOS 5924 were 4 .. 9, conflicting with 5925 ERR_LIB_RSA (= ERR_R_RSA_LIB) 5926 ... 5927 ERR_LIB_PEM (= ERR_R_PEM_LIB). 5928 They are now 58 .. 63 (i.e., just below ERR_R_FATAL). 5929 5930 Add new error code 'ERR_R_INTERNAL_ERROR'. 5931 [Bodo Moeller] 5932 5933 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock 5934 suffices. 5935 [Bodo Moeller] 5936 5937 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This 5938 sets the subject name for a new request or supersedes the 5939 subject name in a given request. Formats that can be parsed are 5940 'CN=Some Name, OU=myOU, C=IT' 5941 and 5942 'CN=Some Name/OU=myOU/C=IT'. 5943 5944 Add options '-batch' and '-verbose' to 'openssl req'. 5945 [Massimiliano Pala <madwolf@hackmasters.net>] 5946 5947 *) Introduce the possibility to access global variables through 5948 functions on platform were that's the best way to handle exporting 5949 global variables in shared libraries. To enable this functionality, 5950 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro 5951 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter 5952 is normally done by Configure or something similar). 5953 5954 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL 5955 in the source file (foo.c) like this: 5956 5957 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1; 5958 OPENSSL_IMPLEMENT_GLOBAL(double,bar); 5959 5960 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL 5961 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this: 5962 5963 OPENSSL_DECLARE_GLOBAL(int,foo); 5964 #define foo OPENSSL_GLOBAL_REF(foo) 5965 OPENSSL_DECLARE_GLOBAL(double,bar); 5966 #define bar OPENSSL_GLOBAL_REF(bar) 5967 5968 The #defines are very important, and therefore so is including the 5969 header file everywhere where the defined globals are used. 5970 5971 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition 5972 of ASN.1 items, but that structure is a bit different. 5973 5974 The largest change is in util/mkdef.pl which has been enhanced with 5975 better and easier to understand logic to choose which symbols should 5976 go into the Windows .def files as well as a number of fixes and code 5977 cleanup (among others, algorithm keywords are now sorted 5978 lexicographically to avoid constant rewrites). 5979 [Richard Levitte] 5980 5981 *) In BN_div() keep a copy of the sign of 'num' before writing the 5982 result to 'rm' because if rm==num the value will be overwritten 5983 and produce the wrong result if 'num' is negative: this caused 5984 problems with BN_mod() and BN_nnmod(). 5985 [Steve Henson] 5986 5987 *) Function OCSP_request_verify(). This checks the signature on an 5988 OCSP request and verifies the signer certificate. The signer 5989 certificate is just checked for a generic purpose and OCSP request 5990 trust settings. 5991 [Steve Henson] 5992 5993 *) Add OCSP_check_validity() function to check the validity of OCSP 5994 responses. OCSP responses are prepared in real time and may only 5995 be a few seconds old. Simply checking that the current time lies 5996 between thisUpdate and nextUpdate max reject otherwise valid responses 5997 caused by either OCSP responder or client clock inaccuracy. Instead 5998 we allow thisUpdate and nextUpdate to fall within a certain period of 5999 the current time. The age of the response can also optionally be 6000 checked. Two new options -validity_period and -status_age added to 6001 ocsp utility. 6002 [Steve Henson] 6003 6004 *) If signature or public key algorithm is unrecognized print out its 6005 OID rather that just UNKNOWN. 6006 [Steve Henson] 6007 6008 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and 6009 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate 6010 ID to be generated from the issuer certificate alone which can then be 6011 passed to OCSP_id_issuer_cmp(). 6012 [Steve Henson] 6013 6014 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new 6015 ASN1 modules to export functions returning ASN1_ITEM pointers 6016 instead of the ASN1_ITEM structures themselves. This adds several 6017 new macros which allow the underlying ASN1 function/structure to 6018 be accessed transparently. As a result code should not use ASN1_ITEM 6019 references directly (such as &X509_it) but instead use the relevant 6020 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow 6021 use of the new ASN1 code on platforms where exporting structures 6022 is problematical (for example in shared libraries) but exporting 6023 functions returning pointers to structures is not. 6024 [Steve Henson] 6025 6026 *) Add support for overriding the generation of SSL/TLS session IDs. 6027 These callbacks can be registered either in an SSL_CTX or per SSL. 6028 The purpose of this is to allow applications to control, if they wish, 6029 the arbitrary values chosen for use as session IDs, particularly as it 6030 can be useful for session caching in multiple-server environments. A 6031 command-line switch for testing this (and any client code that wishes 6032 to use such a feature) has been added to "s_server". 6033 [Geoff Thorpe, Lutz Jaenicke] 6034 6035 *) Modify mkdef.pl to recognise and parse preprocessor conditionals 6036 of the form '#if defined(...) || defined(...) || ...' and 6037 '#if !defined(...) && !defined(...) && ...'. This also avoids 6038 the growing number of special cases it was previously handling. 6039 [Richard Levitte] 6040 6041 *) Make all configuration macros available for application by making 6042 sure they are available in opensslconf.h, by giving them names starting 6043 with "OPENSSL_" to avoid conflicts with other packages and by making 6044 sure e_os2.h will cover all platform-specific cases together with 6045 opensslconf.h. 6046 Additionally, it is now possible to define configuration/platform- 6047 specific names (called "system identities"). In the C code, these 6048 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another 6049 macro with the name beginning with "OPENSSL_SYS_", which is determined 6050 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on 6051 what is available. 6052 [Richard Levitte] 6053 6054 *) New option -set_serial to 'req' and 'x509' this allows the serial 6055 number to use to be specified on the command line. Previously self 6056 signed certificates were hard coded with serial number 0 and the 6057 CA options of 'x509' had to use a serial number in a file which was 6058 auto incremented. 6059 [Steve Henson] 6060 6061 *) New options to 'ca' utility to support V2 CRL entry extensions. 6062 Currently CRL reason, invalidity date and hold instruction are 6063 supported. Add new CRL extensions to V3 code and some new objects. 6064 [Steve Henson] 6065 6066 *) New function EVP_CIPHER_CTX_set_padding() this is used to 6067 disable standard block padding (aka PKCS#5 padding) in the EVP 6068 API, which was previously mandatory. This means that the data is 6069 not padded in any way and so the total length much be a multiple 6070 of the block size, otherwise an error occurs. 6071 [Steve Henson] 6072 6073 *) Initial (incomplete) OCSP SSL support. 6074 [Steve Henson] 6075 6076 *) New function OCSP_parse_url(). This splits up a URL into its host, 6077 port and path components: primarily to parse OCSP URLs. New -url 6078 option to ocsp utility. 6079 [Steve Henson] 6080 6081 *) New nonce behavior. The return value of OCSP_check_nonce() now 6082 reflects the various checks performed. Applications can decide 6083 whether to tolerate certain situations such as an absent nonce 6084 in a response when one was present in a request: the ocsp application 6085 just prints out a warning. New function OCSP_add1_basic_nonce() 6086 this is to allow responders to include a nonce in a response even if 6087 the request is nonce-less. 6088 [Steve Henson] 6089 6090 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are 6091 skipped when using openssl x509 multiple times on a single input file, 6092 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs". 6093 [Bodo Moeller] 6094 6095 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string() 6096 set string type: to handle setting ASN1_TIME structures. Fix ca 6097 utility to correctly initialize revocation date of CRLs. 6098 [Steve Henson] 6099 6100 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override 6101 the clients preferred ciphersuites and rather use its own preferences. 6102 Should help to work around M$ SGC (Server Gated Cryptography) bug in 6103 Internet Explorer by ensuring unchanged hash method during stepup. 6104 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.) 6105 [Lutz Jaenicke] 6106 6107 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael 6108 to aes and add a new 'exist' option to print out symbols that don't 6109 appear to exist. 6110 [Steve Henson] 6111 6112 *) Additional options to ocsp utility to allow flags to be set and 6113 additional certificates supplied. 6114 [Steve Henson] 6115 6116 *) Add the option -VAfile to 'openssl ocsp', so the user can give the 6117 OCSP client a number of certificate to only verify the response 6118 signature against. 6119 [Richard Levitte] 6120 6121 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to 6122 handle the new API. Currently only ECB, CBC modes supported. Add new 6123 AES OIDs. 6124 6125 Add TLS AES ciphersuites as described in RFC3268, "Advanced 6126 Encryption Standard (AES) Ciphersuites for Transport Layer 6127 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were 6128 not enabled by default and were not part of the "ALL" ciphersuite 6129 alias because they were not yet official; they could be 6130 explicitly requested by specifying the "AESdraft" ciphersuite 6131 group alias. In the final release of OpenSSL 0.9.7, the group 6132 alias is called "AES" and is part of "ALL".) 6133 [Ben Laurie, Steve Henson, Bodo Moeller] 6134 6135 *) New function OCSP_copy_nonce() to copy nonce value (if present) from 6136 request to response. 6137 [Steve Henson] 6138 6139 *) Functions for OCSP responders. OCSP_request_onereq_count(), 6140 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info() 6141 extract information from a certificate request. OCSP_response_create() 6142 creates a response and optionally adds a basic response structure. 6143 OCSP_basic_add1_status() adds a complete single response to a basic 6144 response and returns the OCSP_SINGLERESP structure just added (to allow 6145 extensions to be included for example). OCSP_basic_add1_cert() adds a 6146 certificate to a basic response and OCSP_basic_sign() signs a basic 6147 response with various flags. New helper functions ASN1_TIME_check() 6148 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime() 6149 (converts ASN1_TIME to GeneralizedTime). 6150 [Steve Henson] 6151 6152 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}() 6153 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key 6154 structure from a certificate. X509_pubkey_digest() digests the public_key 6155 contents: this is used in various key identifiers. 6156 [Steve Henson] 6157 6158 *) Make sk_sort() tolerate a NULL argument. 6159 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>] 6160 6161 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates 6162 passed by the function are trusted implicitly. If any of them signed the 6163 response then it is assumed to be valid and is not verified. 6164 [Steve Henson] 6165 6166 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT 6167 to data. This was previously part of the PKCS7 ASN1 code. This 6168 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures. 6169 [Steve Henson, reported by Kenneth R. Robinette 6170 <support@securenetterm.com>] 6171 6172 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1 6173 routines: without these tracing memory leaks is very painful. 6174 Fix leaks in PKCS12 and PKCS7 routines. 6175 [Steve Henson] 6176 6177 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new(). 6178 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which 6179 effectively meant GeneralizedTime would never be used. Now it 6180 is initialised to -1 but X509_time_adj() now has to check the value 6181 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or 6182 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime. 6183 [Steve Henson, reported by Kenneth R. Robinette 6184 <support@securenetterm.com>] 6185 6186 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously 6187 result in a zero length in the ASN1_INTEGER structure which was 6188 not consistent with the structure when d2i_ASN1_INTEGER() was used 6189 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER() 6190 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER() 6191 where it did not print out a minus for negative ASN1_INTEGER. 6192 [Steve Henson] 6193 6194 *) Add summary printout to ocsp utility. The various functions which 6195 convert status values to strings have been renamed to: 6196 OCSP_response_status_str(), OCSP_cert_status_str() and 6197 OCSP_crl_reason_str() and are no longer static. New options 6198 to verify nonce values and to disable verification. OCSP response 6199 printout format cleaned up. 6200 [Steve Henson] 6201 6202 *) Add additional OCSP certificate checks. These are those specified 6203 in RFC2560. This consists of two separate checks: the CA of the 6204 certificate being checked must either be the OCSP signer certificate 6205 or the issuer of the OCSP signer certificate. In the latter case the 6206 OCSP signer certificate must contain the OCSP signing extended key 6207 usage. This check is performed by attempting to match the OCSP 6208 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash 6209 in the OCSP_CERTID structures of the response. 6210 [Steve Henson] 6211 6212 *) Initial OCSP certificate verification added to OCSP_basic_verify() 6213 and related routines. This uses the standard OpenSSL certificate 6214 verify routines to perform initial checks (just CA validity) and 6215 to obtain the certificate chain. Then additional checks will be 6216 performed on the chain. Currently the root CA is checked to see 6217 if it is explicitly trusted for OCSP signing. This is used to set 6218 a root CA as a global signing root: that is any certificate that 6219 chains to that CA is an acceptable OCSP signing certificate. 6220 [Steve Henson] 6221 6222 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3 6223 extensions from a separate configuration file. 6224 As when reading extensions from the main configuration file, 6225 the '-extensions ...' option may be used for specifying the 6226 section to use. 6227 [Massimiliano Pala <madwolf@comune.modena.it>] 6228 6229 *) New OCSP utility. Allows OCSP requests to be generated or 6230 read. The request can be sent to a responder and the output 6231 parsed, outputed or printed in text form. Not complete yet: 6232 still needs to check the OCSP response validity. 6233 [Steve Henson] 6234 6235 *) New subcommands for 'openssl ca': 6236 'openssl ca -status <serial>' prints the status of the cert with 6237 the given serial number (according to the index file). 6238 'openssl ca -updatedb' updates the expiry status of certificates 6239 in the index file. 6240 [Massimiliano Pala <madwolf@comune.modena.it>] 6241 6242 *) New '-newreq-nodes' command option to CA.pl. This is like 6243 '-newreq', but calls 'openssl req' with the '-nodes' option 6244 so that the resulting key is not encrypted. 6245 [Damien Miller <djm@mindrot.org>] 6246 6247 *) New configuration for the GNU Hurd. 6248 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte] 6249 6250 *) Initial code to implement OCSP basic response verify. This 6251 is currently incomplete. Currently just finds the signer's 6252 certificate and verifies the signature on the response. 6253 [Steve Henson] 6254 6255 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in 6256 value of OPENSSLDIR. This is available via the new '-d' option 6257 to 'openssl version', and is also included in 'openssl version -a'. 6258 [Bodo Moeller] 6259 6260 *) Allowing defining memory allocation callbacks that will be given 6261 file name and line number information in additional arguments 6262 (a const char* and an int). The basic functionality remains, as 6263 well as the original possibility to just replace malloc(), 6264 realloc() and free() by functions that do not know about these 6265 additional arguments. To register and find out the current 6266 settings for extended allocation functions, the following 6267 functions are provided: 6268 6269 CRYPTO_set_mem_ex_functions 6270 CRYPTO_set_locked_mem_ex_functions 6271 CRYPTO_get_mem_ex_functions 6272 CRYPTO_get_locked_mem_ex_functions 6273 6274 These work the same way as CRYPTO_set_mem_functions and friends. 6275 CRYPTO_get_[locked_]mem_functions now writes 0 where such an 6276 extended allocation function is enabled. 6277 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where 6278 a conventional allocation function is enabled. 6279 [Richard Levitte, Bodo Moeller] 6280 6281 *) Finish off removing the remaining LHASH function pointer casts. 6282 There should no longer be any prototype-casting required when using 6283 the LHASH abstraction, and any casts that remain are "bugs". See 6284 the callback types and macros at the head of lhash.h for details 6285 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example). 6286 [Geoff Thorpe] 6287 6288 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant. 6289 If /dev/[u]random devices are not available or do not return enough 6290 entropy, EGD style sockets (served by EGD or PRNGD) will automatically 6291 be queried. 6292 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and 6293 /etc/entropy will be queried once each in this sequence, quering stops 6294 when enough entropy was collected without querying more sockets. 6295 [Lutz Jaenicke] 6296 6297 *) Change the Unix RAND_poll() variant to be able to poll several 6298 random devices, as specified by DEVRANDOM, until a sufficient amount 6299 of data has been collected. We spend at most 10 ms on each file 6300 (select timeout) and read in non-blocking mode. DEVRANDOM now 6301 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom" 6302 (previously it was just the string "/dev/urandom"), so on typical 6303 platforms the 10 ms delay will never occur. 6304 Also separate out the Unix variant to its own file, rand_unix.c. 6305 For VMS, there's a currently-empty rand_vms.c. 6306 [Richard Levitte] 6307 6308 *) Move OCSP client related routines to ocsp_cl.c. These 6309 provide utility functions which an application needing 6310 to issue a request to an OCSP responder and analyse the 6311 response will typically need: as opposed to those which an 6312 OCSP responder itself would need which will be added later. 6313 6314 OCSP_request_sign() signs an OCSP request with an API similar 6315 to PKCS7_sign(). OCSP_response_status() returns status of OCSP 6316 response. OCSP_response_get1_basic() extracts basic response 6317 from response. OCSP_resp_find_status(): finds and extracts status 6318 information from an OCSP_CERTID structure (which will be created 6319 when the request structure is built). These are built from lower 6320 level functions which work on OCSP_SINGLERESP structures but 6321 wont normally be used unless the application wishes to examine 6322 extensions in the OCSP response for example. 6323 6324 Replace nonce routines with a pair of functions. 6325 OCSP_request_add1_nonce() adds a nonce value and optionally 6326 generates a random value. OCSP_check_nonce() checks the 6327 validity of the nonce in an OCSP response. 6328 [Steve Henson] 6329 6330 *) Change function OCSP_request_add() to OCSP_request_add0_id(). 6331 This doesn't copy the supplied OCSP_CERTID and avoids the 6332 need to free up the newly created id. Change return type 6333 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure. 6334 This can then be used to add extensions to the request. 6335 Deleted OCSP_request_new(), since most of its functionality 6336 is now in OCSP_REQUEST_new() (and the case insensitive name 6337 clash) apart from the ability to set the request name which 6338 will be added elsewhere. 6339 [Steve Henson] 6340 6341 *) Update OCSP API. Remove obsolete extensions argument from 6342 various functions. Extensions are now handled using the new 6343 OCSP extension code. New simple OCSP HTTP function which 6344 can be used to send requests and parse the response. 6345 [Steve Henson] 6346 6347 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new 6348 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN 6349 uses the special reorder version of SET OF to sort the attributes 6350 and reorder them to match the encoded order. This resolves a long 6351 standing problem: a verify on a PKCS7 structure just after signing 6352 it used to fail because the attribute order did not match the 6353 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes: 6354 it uses the received order. This is necessary to tolerate some broken 6355 software that does not order SET OF. This is handled by encoding 6356 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class) 6357 to produce the required SET OF. 6358 [Steve Henson] 6359 6360 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and 6361 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header 6362 files to get correct declarations of the ASN.1 item variables. 6363 [Richard Levitte] 6364 6365 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many 6366 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs: 6367 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was 6368 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i(). 6369 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant 6370 ASN1_ITEM and no wrapper functions. 6371 [Steve Henson] 6372 6373 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These 6374 replace the old function pointer based I/O routines. Change most of 6375 the *_d2i_bio() and *_d2i_fp() functions to use these. 6376 [Steve Henson] 6377 6378 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor 6379 lines, recognice more "algorithms" that can be deselected, and make 6380 it complain about algorithm deselection that isn't recognised. 6381 [Richard Levitte] 6382 6383 *) New ASN1 functions to handle dup, sign, verify, digest, pack and 6384 unpack operations in terms of ASN1_ITEM. Modify existing wrappers 6385 to use new functions. Add NO_ASN1_OLD which can be set to remove 6386 some old style ASN1 functions: this can be used to determine if old 6387 code will still work when these eventually go away. 6388 [Steve Henson] 6389 6390 *) New extension functions for OCSP structures, these follow the 6391 same conventions as certificates and CRLs. 6392 [Steve Henson] 6393 6394 *) New function X509V3_add1_i2d(). This automatically encodes and 6395 adds an extension. Its behaviour can be customised with various 6396 flags to append, replace or delete. Various wrappers added for 6397 certifcates and CRLs. 6398 [Steve Henson] 6399 6400 *) Fix to avoid calling the underlying ASN1 print routine when 6401 an extension cannot be parsed. Correct a typo in the 6402 OCSP_SERVICELOC extension. Tidy up print OCSP format. 6403 [Steve Henson] 6404 6405 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate 6406 entries for variables. 6407 [Steve Henson] 6408 6409 *) Add functionality to apps/openssl.c for detecting locking 6410 problems: As the program is single-threaded, all we have 6411 to do is register a locking callback using an array for 6412 storing which locks are currently held by the program. 6413 [Bodo Moeller] 6414 6415 *) Use a lock around the call to CRYPTO_get_ex_new_index() in 6416 SSL_get_ex_data_X509_STORE_idx(), which is used in 6417 ssl_verify_cert_chain() and thus can be called at any time 6418 during TLS/SSL handshakes so that thread-safety is essential. 6419 Unfortunately, the ex_data design is not at all suited 6420 for multi-threaded use, so it probably should be abolished. 6421 [Bodo Moeller] 6422 6423 *) Added Broadcom "ubsec" ENGINE to OpenSSL. 6424 [Broadcom, tweaked and integrated by Geoff Thorpe] 6425 6426 *) Move common extension printing code to new function 6427 X509V3_print_extensions(). Reorganise OCSP print routines and 6428 implement some needed OCSP ASN1 functions. Add OCSP extensions. 6429 [Steve Henson] 6430 6431 *) New function X509_signature_print() to remove duplication in some 6432 print routines. 6433 [Steve Henson] 6434 6435 *) Add a special meaning when SET OF and SEQUENCE OF flags are both 6436 set (this was treated exactly the same as SET OF previously). This 6437 is used to reorder the STACK representing the structure to match the 6438 encoding. This will be used to get round a problem where a PKCS7 6439 structure which was signed could not be verified because the STACK 6440 order did not reflect the encoded order. 6441 [Steve Henson] 6442 6443 *) Reimplement the OCSP ASN1 module using the new code. 6444 [Steve Henson] 6445 6446 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure 6447 for its ASN1 operations. The old style function pointers still exist 6448 for now but they will eventually go away. 6449 [Steve Henson] 6450 6451 *) Merge in replacement ASN1 code from the ASN1 branch. This almost 6452 completely replaces the old ASN1 functionality with a table driven 6453 encoder and decoder which interprets an ASN1_ITEM structure describing 6454 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is 6455 largely maintained. Almost all of the old asn1_mac.h macro based ASN1 6456 has also been converted to the new form. 6457 [Steve Henson] 6458 6459 *) Change BN_mod_exp_recp so that negative moduli are tolerated 6460 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set 6461 so that BN_mod_exp_mont and BN_mod_exp_mont_word work 6462 for negative moduli. 6463 [Bodo Moeller] 6464 6465 *) Fix BN_uadd and BN_usub: Always return non-negative results instead 6466 of not touching the result's sign bit. 6467 [Bodo Moeller] 6468 6469 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be 6470 set. 6471 [Bodo Moeller] 6472 6473 *) Changed the LHASH code to use prototypes for callbacks, and created 6474 macros to declare and implement thin (optionally static) functions 6475 that provide type-safety and avoid function pointer casting for the 6476 type-specific callbacks. 6477 [Geoff Thorpe] 6478 6479 *) Added Kerberos Cipher Suites to be used with TLS, as written in 6480 RFC 2712. 6481 [Veers Staats <staatsvr@asc.hpc.mil>, 6482 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte] 6483 6484 *) Reformat the FAQ so the different questions and answers can be divided 6485 in sections depending on the subject. 6486 [Richard Levitte] 6487 6488 *) Have the zlib compression code load ZLIB.DLL dynamically under 6489 Windows. 6490 [Richard Levitte] 6491 6492 *) New function BN_mod_sqrt for computing square roots modulo a prime 6493 (using the probabilistic Tonelli-Shanks algorithm unless 6494 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can 6495 be handled deterministically). 6496 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] 6497 6498 *) Make BN_mod_inverse faster by explicitly handling small quotients 6499 in the Euclid loop. (Speed gain about 20% for small moduli [256 or 6500 512 bits], about 30% for larger ones [1024 or 2048 bits].) 6501 [Bodo Moeller] 6502 6503 *) New function BN_kronecker. 6504 [Bodo Moeller] 6505 6506 *) Fix BN_gcd so that it works on negative inputs; the result is 6507 positive unless both parameters are zero. 6508 Previously something reasonably close to an infinite loop was 6509 possible because numbers could be growing instead of shrinking 6510 in the implementation of Euclid's algorithm. 6511 [Bodo Moeller] 6512 6513 *) Fix BN_is_word() and BN_is_one() macros to take into account the 6514 sign of the number in question. 6515 6516 Fix BN_is_word(a,w) to work correctly for w == 0. 6517 6518 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w) 6519 because its test if the absolute value of 'a' equals 'w'. 6520 Note that BN_abs_is_word does *not* handle w == 0 reliably; 6521 it exists mostly for use in the implementations of BN_is_zero(), 6522 BN_is_one(), and BN_is_word(). 6523 [Bodo Moeller] 6524 6525 *) New function BN_swap. 6526 [Bodo Moeller] 6527 6528 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that 6529 the exponentiation functions are more likely to produce reasonable 6530 results on negative inputs. 6531 [Bodo Moeller] 6532 6533 *) Change BN_mod_mul so that the result is always non-negative. 6534 Previously, it could be negative if one of the factors was negative; 6535 I don't think anyone really wanted that behaviour. 6536 [Bodo Moeller] 6537 6538 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c 6539 (except for exponentiation, which stays in crypto/bn/bn_exp.c, 6540 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c) 6541 and add new functions: 6542 6543 BN_nnmod 6544 BN_mod_sqr 6545 BN_mod_add 6546 BN_mod_add_quick 6547 BN_mod_sub 6548 BN_mod_sub_quick 6549 BN_mod_lshift1 6550 BN_mod_lshift1_quick 6551 BN_mod_lshift 6552 BN_mod_lshift_quick 6553 6554 These functions always generate non-negative results. 6555 6556 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r 6557 such that |m| < r < 0, BN_nnmod will output rem + |m| instead). 6558 6559 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as 6560 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b] 6561 be reduced modulo m. 6562 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] 6563 6564#if 0 6565 The following entry accidentily appeared in the CHANGES file 6566 distributed with OpenSSL 0.9.7. The modifications described in 6567 it do *not* apply to OpenSSL 0.9.7. 6568 6569 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there 6570 was actually never needed) and in BN_mul(). The removal in BN_mul() 6571 required a small change in bn_mul_part_recursive() and the addition 6572 of the functions bn_cmp_part_words(), bn_sub_part_words() and 6573 bn_add_part_words(), which do the same thing as bn_cmp_words(), 6574 bn_sub_words() and bn_add_words() except they take arrays with 6575 differing sizes. 6576 [Richard Levitte] 6577#endif 6578 6579 *) In 'openssl passwd', verify passwords read from the terminal 6580 unless the '-salt' option is used (which usually means that 6581 verification would just waste user's time since the resulting 6582 hash is going to be compared with some given password hash) 6583 or the new '-noverify' option is used. 6584 6585 This is an incompatible change, but it does not affect 6586 non-interactive use of 'openssl passwd' (passwords on the command 6587 line, '-stdin' option, '-in ...' option) and thus should not 6588 cause any problems. 6589 [Bodo Moeller] 6590 6591 *) Remove all references to RSAref, since there's no more need for it. 6592 [Richard Levitte] 6593 6594 *) Make DSO load along a path given through an environment variable 6595 (SHLIB_PATH) with shl_load(). 6596 [Richard Levitte] 6597 6598 *) Constify the ENGINE code as a result of BIGNUM constification. 6599 Also constify the RSA code and most things related to it. In a 6600 few places, most notable in the depth of the ASN.1 code, ugly 6601 casts back to non-const were required (to be solved at a later 6602 time) 6603 [Richard Levitte] 6604 6605 *) Make it so the openssl application has all engines loaded by default. 6606 [Richard Levitte] 6607 6608 *) Constify the BIGNUM routines a little more. 6609 [Richard Levitte] 6610 6611 *) Add the following functions: 6612 6613 ENGINE_load_cswift() 6614 ENGINE_load_chil() 6615 ENGINE_load_atalla() 6616 ENGINE_load_nuron() 6617 ENGINE_load_builtin_engines() 6618 6619 That way, an application can itself choose if external engines that 6620 are built-in in OpenSSL shall ever be used or not. The benefit is 6621 that applications won't have to be linked with libdl or other dso 6622 libraries unless it's really needed. 6623 6624 Changed 'openssl engine' to load all engines on demand. 6625 Changed the engine header files to avoid the duplication of some 6626 declarations (they differed!). 6627 [Richard Levitte] 6628 6629 *) 'openssl engine' can now list capabilities. 6630 [Richard Levitte] 6631 6632 *) Better error reporting in 'openssl engine'. 6633 [Richard Levitte] 6634 6635 *) Never call load_dh_param(NULL) in s_server. 6636 [Bodo Moeller] 6637 6638 *) Add engine application. It can currently list engines by name and 6639 identity, and test if they are actually available. 6640 [Richard Levitte] 6641 6642 *) Improve RPM specification file by forcing symbolic linking and making 6643 sure the installed documentation is also owned by root.root. 6644 [Damien Miller <djm@mindrot.org>] 6645 6646 *) Give the OpenSSL applications more possibilities to make use of 6647 keys (public as well as private) handled by engines. 6648 [Richard Levitte] 6649 6650 *) Add OCSP code that comes from CertCo. 6651 [Richard Levitte] 6652 6653 *) Add VMS support for the Rijndael code. 6654 [Richard Levitte] 6655 6656 *) Added untested support for Nuron crypto accelerator. 6657 [Ben Laurie] 6658 6659 *) Add support for external cryptographic devices. This code was 6660 previously distributed separately as the "engine" branch. 6661 [Geoff Thorpe, Richard Levitte] 6662 6663 *) Rework the filename-translation in the DSO code. It is now possible to 6664 have far greater control over how a "name" is turned into a filename 6665 depending on the operating environment and any oddities about the 6666 different shared library filenames on each system. 6667 [Geoff Thorpe] 6668 6669 *) Support threads on FreeBSD-elf in Configure. 6670 [Richard Levitte] 6671 6672 *) Fix for SHA1 assembly problem with MASM: it produces 6673 warnings about corrupt line number information when assembling 6674 with debugging information. This is caused by the overlapping 6675 of two sections. 6676 [Bernd Matthes <mainbug@celocom.de>, Steve Henson] 6677 6678 *) NCONF changes. 6679 NCONF_get_number() has no error checking at all. As a replacement, 6680 NCONF_get_number_e() is defined (_e for "error checking") and is 6681 promoted strongly. The old NCONF_get_number is kept around for 6682 binary backward compatibility. 6683 Make it possible for methods to load from something other than a BIO, 6684 by providing a function pointer that is given a name instead of a BIO. 6685 For example, this could be used to load configuration data from an 6686 LDAP server. 6687 [Richard Levitte] 6688 6689 *) Fix for non blocking accept BIOs. Added new I/O special reason 6690 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs 6691 with non blocking I/O was not possible because no retry code was 6692 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover 6693 this case. 6694 [Steve Henson] 6695 6696 *) Added the beginnings of Rijndael support. 6697 [Ben Laurie] 6698 6699 *) Fix for bug in DirectoryString mask setting. Add support for 6700 X509_NAME_print_ex() in 'req' and X509_print_ex() function 6701 to allow certificate printing to more controllable, additional 6702 'certopt' option to 'x509' to allow new printing options to be 6703 set. 6704 [Steve Henson] 6705 6706 *) Clean old EAY MD5 hack from e_os.h. 6707 [Richard Levitte] 6708 6709 Changes between 0.9.6l and 0.9.6m [17 Mar 2004] 6710 6711 *) Fix null-pointer assignment in do_change_cipher_spec() revealed 6712 by using the Codenomicon TLS Test Tool (CVE-2004-0079) 6713 [Joe Orton, Steve Henson] 6714 6715 Changes between 0.9.6k and 0.9.6l [04 Nov 2003] 6716 6717 *) Fix additional bug revealed by the NISCC test suite: 6718 6719 Stop bug triggering large recursion when presented with 6720 certain ASN.1 tags (CVE-2003-0851) 6721 [Steve Henson] 6722 6723 Changes between 0.9.6j and 0.9.6k [30 Sep 2003] 6724 6725 *) Fix various bugs revealed by running the NISCC test suite: 6726 6727 Stop out of bounds reads in the ASN1 code when presented with 6728 invalid tags (CVE-2003-0543 and CVE-2003-0544). 6729 6730 If verify callback ignores invalid public key errors don't try to check 6731 certificate signature with the NULL public key. 6732 6733 [Steve Henson] 6734 6735 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate 6736 if the server requested one: as stated in TLS 1.0 and SSL 3.0 6737 specifications. 6738 [Steve Henson] 6739 6740 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional 6741 extra data after the compression methods not only for TLS 1.0 6742 but also for SSL 3.0 (as required by the specification). 6743 [Bodo Moeller; problem pointed out by Matthias Loepfe] 6744 6745 *) Change X509_certificate_type() to mark the key as exported/exportable 6746 when it's 512 *bits* long, not 512 bytes. 6747 [Richard Levitte] 6748 6749 Changes between 0.9.6i and 0.9.6j [10 Apr 2003] 6750 6751 *) Countermeasure against the Klima-Pokorny-Rosa extension of 6752 Bleichbacher's attack on PKCS #1 v1.5 padding: treat 6753 a protocol version number mismatch like a decryption error 6754 in ssl3_get_client_key_exchange (ssl/s3_srvr.c). 6755 [Bodo Moeller] 6756 6757 *) Turn on RSA blinding by default in the default implementation 6758 to avoid a timing attack. Applications that don't want it can call 6759 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. 6760 They would be ill-advised to do so in most cases. 6761 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] 6762 6763 *) Change RSA blinding code so that it works when the PRNG is not 6764 seeded (in this case, the secret RSA exponent is abused as 6765 an unpredictable seed -- if it is not unpredictable, there 6766 is no point in blinding anyway). Make RSA blinding thread-safe 6767 by remembering the creator's thread ID in rsa->blinding and 6768 having all other threads use local one-time blinding factors 6769 (this requires more computation than sharing rsa->blinding, but 6770 avoids excessive locking; and if an RSA object is not shared 6771 between threads, blinding will still be very fast). 6772 [Bodo Moeller] 6773 6774 Changes between 0.9.6h and 0.9.6i [19 Feb 2003] 6775 6776 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked 6777 via timing by performing a MAC computation even if incorrrect 6778 block cipher padding has been found. This is a countermeasure 6779 against active attacks where the attacker has to distinguish 6780 between bad padding and a MAC verification error. (CVE-2003-0078) 6781 6782 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), 6783 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and 6784 Martin Vuagnoux (EPFL, Ilion)] 6785 6786 Changes between 0.9.6g and 0.9.6h [5 Dec 2002] 6787 6788 *) New function OPENSSL_cleanse(), which is used to cleanse a section of 6789 memory from it's contents. This is done with a counter that will 6790 place alternating values in each byte. This can be used to solve 6791 two issues: 1) the removal of calls to memset() by highly optimizing 6792 compilers, and 2) cleansing with other values than 0, since those can 6793 be read through on certain media, for example a swap space on disk. 6794 [Geoff Thorpe] 6795 6796 *) Bugfix: client side session caching did not work with external caching, 6797 because the session->cipher setting was not restored when reloading 6798 from the external cache. This problem was masked, when 6799 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set. 6800 (Found by Steve Haslam <steve@araqnid.ddts.net>.) 6801 [Lutz Jaenicke] 6802 6803 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total 6804 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33. 6805 [Zeev Lieber <zeev-l@yahoo.com>] 6806 6807 *) Undo an undocumented change introduced in 0.9.6e which caused 6808 repeated calls to OpenSSL_add_all_ciphers() and 6809 OpenSSL_add_all_digests() to be ignored, even after calling 6810 EVP_cleanup(). 6811 [Richard Levitte] 6812 6813 *) Change the default configuration reader to deal with last line not 6814 being properly terminated. 6815 [Richard Levitte] 6816 6817 *) Change X509_NAME_cmp() so it applies the special rules on handling 6818 DN values that are of type PrintableString, as well as RDNs of type 6819 emailAddress where the value has the type ia5String. 6820 [stefank@valicert.com via Richard Levitte] 6821 6822 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half 6823 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently 6824 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be 6825 the bitwise-OR of the two for use by the majority of applications 6826 wanting this behaviour, and update the docs. The documented 6827 behaviour and actual behaviour were inconsistent and had been 6828 changing anyway, so this is more a bug-fix than a behavioural 6829 change. 6830 [Geoff Thorpe, diagnosed by Nadav Har'El] 6831 6832 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c 6833 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes). 6834 [Bodo Moeller] 6835 6836 *) Fix initialization code race conditions in 6837 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(), 6838 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(), 6839 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(), 6840 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(), 6841 ssl2_get_cipher_by_char(), 6842 ssl3_get_cipher_by_char(). 6843 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller] 6844 6845 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after 6846 the cached sessions are flushed, as the remove_cb() might use ex_data 6847 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com> 6848 (see [openssl.org #212]). 6849 [Geoff Thorpe, Lutz Jaenicke] 6850 6851 *) Fix typo in OBJ_txt2obj which incorrectly passed the content 6852 length, instead of the encoding length to d2i_ASN1_OBJECT. 6853 [Steve Henson] 6854 6855 Changes between 0.9.6f and 0.9.6g [9 Aug 2002] 6856 6857 *) [In 0.9.6g-engine release:] 6858 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall'). 6859 [Lynn Gazis <lgazis@rainbow.com>] 6860 6861 Changes between 0.9.6e and 0.9.6f [8 Aug 2002] 6862 6863 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX 6864 and get fix the header length calculation. 6865 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>, 6866 Alon Kantor <alonk@checkpoint.com> (and others), 6867 Steve Henson] 6868 6869 *) Use proper error handling instead of 'assertions' in buffer 6870 overflow checks added in 0.9.6e. This prevents DoS (the 6871 assertions could call abort()). 6872 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller] 6873 6874 Changes between 0.9.6d and 0.9.6e [30 Jul 2002] 6875 6876 *) Add various sanity checks to asn1_get_length() to reject 6877 the ASN1 length bytes if they exceed sizeof(long), will appear 6878 negative or the content length exceeds the length of the 6879 supplied buffer. 6880 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>] 6881 6882 *) Fix cipher selection routines: ciphers without encryption had no flags 6883 for the cipher strength set and where therefore not handled correctly 6884 by the selection routines (PR #130). 6885 [Lutz Jaenicke] 6886 6887 *) Fix EVP_dsa_sha macro. 6888 [Nils Larsch] 6889 6890 *) New option 6891 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS 6892 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure 6893 that was added in OpenSSL 0.9.6d. 6894 6895 As the countermeasure turned out to be incompatible with some 6896 broken SSL implementations, the new option is part of SSL_OP_ALL. 6897 SSL_OP_ALL is usually employed when compatibility with weird SSL 6898 implementations is desired (e.g. '-bugs' option to 's_client' and 6899 's_server'), so the new option is automatically set in many 6900 applications. 6901 [Bodo Moeller] 6902 6903 *) Changes in security patch: 6904 6905 Changes marked "(CHATS)" were sponsored by the Defense Advanced 6906 Research Projects Agency (DARPA) and Air Force Research Laboratory, 6907 Air Force Materiel Command, USAF, under agreement number 6908 F30602-01-2-0537. 6909 6910 *) Add various sanity checks to asn1_get_length() to reject 6911 the ASN1 length bytes if they exceed sizeof(long), will appear 6912 negative or the content length exceeds the length of the 6913 supplied buffer. (CVE-2002-0659) 6914 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>] 6915 6916 *) Assertions for various potential buffer overflows, not known to 6917 happen in practice. 6918 [Ben Laurie (CHATS)] 6919 6920 *) Various temporary buffers to hold ASCII versions of integers were 6921 too small for 64 bit platforms. (CVE-2002-0655) 6922 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)> 6923 6924 *) Remote buffer overflow in SSL3 protocol - an attacker could 6925 supply an oversized session ID to a client. (CVE-2002-0656) 6926 [Ben Laurie (CHATS)] 6927 6928 *) Remote buffer overflow in SSL2 protocol - an attacker could 6929 supply an oversized client master key. (CVE-2002-0656) 6930 [Ben Laurie (CHATS)] 6931 6932 Changes between 0.9.6c and 0.9.6d [9 May 2002] 6933 6934 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not 6935 encoded as NULL) with id-dsa-with-sha1. 6936 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller] 6937 6938 *) Check various X509_...() return values in apps/req.c. 6939 [Nils Larsch <nla@trustcenter.de>] 6940 6941 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines: 6942 an end-of-file condition would erronously be flagged, when the CRLF 6943 was just at the end of a processed block. The bug was discovered when 6944 processing data through a buffering memory BIO handing the data to a 6945 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov 6946 <ptsekov@syntrex.com> and Nedelcho Stanev. 6947 [Lutz Jaenicke] 6948 6949 *) Implement a countermeasure against a vulnerability recently found 6950 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment 6951 before application data chunks to avoid the use of known IVs 6952 with data potentially chosen by the attacker. 6953 [Bodo Moeller] 6954 6955 *) Fix length checks in ssl3_get_client_hello(). 6956 [Bodo Moeller] 6957 6958 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently 6959 to prevent ssl3_read_internal() from incorrectly assuming that 6960 ssl3_read_bytes() found application data while handshake 6961 processing was enabled when in fact s->s3->in_read_app_data was 6962 merely automatically cleared during the initial handshake. 6963 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>] 6964 6965 *) Fix object definitions for Private and Enterprise: they were not 6966 recognized in their shortname (=lowercase) representation. Extend 6967 obj_dat.pl to issue an error when using undefined keywords instead 6968 of silently ignoring the problem (Svenning Sorensen 6969 <sss@sss.dnsalias.net>). 6970 [Lutz Jaenicke] 6971 6972 *) Fix DH_generate_parameters() so that it works for 'non-standard' 6973 generators, i.e. generators other than 2 and 5. (Previously, the 6974 code did not properly initialise the 'add' and 'rem' values to 6975 BN_generate_prime().) 6976 6977 In the new general case, we do not insist that 'generator' is 6978 actually a primitive root: This requirement is rather pointless; 6979 a generator of the order-q subgroup is just as good, if not 6980 better. 6981 [Bodo Moeller] 6982 6983 *) Map new X509 verification errors to alerts. Discovered and submitted by 6984 Tom Wu <tom@arcot.com>. 6985 [Lutz Jaenicke] 6986 6987 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from 6988 returning non-zero before the data has been completely received 6989 when using non-blocking I/O. 6990 [Bodo Moeller; problem pointed out by John Hughes] 6991 6992 *) Some of the ciphers missed the strength entry (SSL_LOW etc). 6993 [Ben Laurie, Lutz Jaenicke] 6994 6995 *) Fix bug in SSL_clear(): bad sessions were not removed (found by 6996 Yoram Zahavi <YoramZ@gilian.com>). 6997 [Lutz Jaenicke] 6998 6999 *) Add information about CygWin 1.3 and on, and preserve proper 7000 configuration for the versions before that. 7001 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte] 7002 7003 *) Make removal from session cache (SSL_CTX_remove_session()) more robust: 7004 check whether we deal with a copy of a session and do not delete from 7005 the cache in this case. Problem reported by "Izhar Shoshani Levi" 7006 <izhar@checkpoint.com>. 7007 [Lutz Jaenicke] 7008 7009 *) Do not store session data into the internal session cache, if it 7010 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 7011 flag is set). Proposed by Aslam <aslam@funk.com>. 7012 [Lutz Jaenicke] 7013 7014 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested 7015 value is 0. 7016 [Richard Levitte] 7017 7018 *) [In 0.9.6d-engine release:] 7019 Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). 7020 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 7021 7022 *) Add the configuration target linux-s390x. 7023 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte] 7024 7025 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of 7026 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag 7027 variable as an indication that a ClientHello message has been 7028 received. As the flag value will be lost between multiple 7029 invocations of ssl3_accept when using non-blocking I/O, the 7030 function may not be aware that a handshake has actually taken 7031 place, thus preventing a new session from being added to the 7032 session cache. 7033 7034 To avoid this problem, we now set s->new_session to 2 instead of 7035 using a local variable. 7036 [Lutz Jaenicke, Bodo Moeller] 7037 7038 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c) 7039 if the SSL_R_LENGTH_MISMATCH error is detected. 7040 [Geoff Thorpe, Bodo Moeller] 7041 7042 *) New 'shared_ldflag' column in Configure platform table. 7043 [Richard Levitte] 7044 7045 *) Fix EVP_CIPHER_mode macro. 7046 ["Dan S. Camper" <dan@bti.net>] 7047 7048 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown 7049 type, we must throw them away by setting rr->length to 0. 7050 [D P Chang <dpc@qualys.com>] 7051 7052 Changes between 0.9.6b and 0.9.6c [21 dec 2001] 7053 7054 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl 7055 <Dominikus.Scherkl@biodata.com>. (The previous implementation 7056 worked incorrectly for those cases where range = 10..._2 and 7057 3*range is two bits longer than range.) 7058 [Bodo Moeller] 7059 7060 *) Only add signing time to PKCS7 structures if it is not already 7061 present. 7062 [Steve Henson] 7063 7064 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce", 7065 OBJ_ld_ce should be OBJ_id_ce. 7066 Also some ip-pda OIDs in crypto/objects/objects.txt were 7067 incorrect (cf. RFC 3039). 7068 [Matt Cooper, Frederic Giudicelli, Bodo Moeller] 7069 7070 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid() 7071 returns early because it has nothing to do. 7072 [Andy Schneider <andy.schneider@bjss.co.uk>] 7073 7074 *) [In 0.9.6c-engine release:] 7075 Fix mutex callback return values in crypto/engine/hw_ncipher.c. 7076 [Andy Schneider <andy.schneider@bjss.co.uk>] 7077 7078 *) [In 0.9.6c-engine release:] 7079 Add support for Cryptographic Appliance's keyserver technology. 7080 (Use engine 'keyclient') 7081 [Cryptographic Appliances and Geoff Thorpe] 7082 7083 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89' 7084 is called via tools/c89.sh because arguments have to be 7085 rearranged (all '-L' options must appear before the first object 7086 modules). 7087 [Richard Shapiro <rshapiro@abinitio.com>] 7088 7089 *) [In 0.9.6c-engine release:] 7090 Add support for Broadcom crypto accelerator cards, backported 7091 from 0.9.7. 7092 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox] 7093 7094 *) [In 0.9.6c-engine release:] 7095 Add support for SureWare crypto accelerator cards from 7096 Baltimore Technologies. (Use engine 'sureware') 7097 [Baltimore Technologies and Mark Cox] 7098 7099 *) [In 0.9.6c-engine release:] 7100 Add support for crypto accelerator cards from Accelerated 7101 Encryption Processing, www.aep.ie. (Use engine 'aep') 7102 [AEP Inc. and Mark Cox] 7103 7104 *) Add a configuration entry for gcc on UnixWare. 7105 [Gary Benson <gbenson@redhat.com>] 7106 7107 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake 7108 messages are stored in a single piece (fixed-length part and 7109 variable-length part combined) and fix various bugs found on the way. 7110 [Bodo Moeller] 7111 7112 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname() 7113 instead. BIO_gethostbyname() does not know what timeouts are 7114 appropriate, so entries would stay in cache even when they have 7115 become invalid. 7116 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com> 7117 7118 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when 7119 faced with a pathologically small ClientHello fragment that does 7120 not contain client_version: Instead of aborting with an error, 7121 simply choose the highest available protocol version (i.e., 7122 TLS 1.0 unless it is disabled). In practice, ClientHello 7123 messages are never sent like this, but this change gives us 7124 strictly correct behaviour at least for TLS. 7125 [Bodo Moeller] 7126 7127 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear() 7128 never resets s->method to s->ctx->method when called from within 7129 one of the SSL handshake functions. 7130 [Bodo Moeller; problem pointed out by Niko Baric] 7131 7132 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert 7133 (sent using the client's version number) if client_version is 7134 smaller than the protocol version in use. Also change 7135 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if 7136 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then 7137 the client will at least see that alert. 7138 [Bodo Moeller] 7139 7140 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation 7141 correctly. 7142 [Bodo Moeller] 7143 7144 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a 7145 client receives HelloRequest while in a handshake. 7146 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>] 7147 7148 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C 7149 should end in 'break', not 'goto end' which circuments various 7150 cleanups done in state SSL_ST_OK. But session related stuff 7151 must be disabled for SSL_ST_OK in the case that we just sent a 7152 HelloRequest. 7153 7154 Also avoid some overhead by not calling ssl_init_wbio_buffer() 7155 before just sending a HelloRequest. 7156 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>] 7157 7158 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't 7159 reveal whether illegal block cipher padding was found or a MAC 7160 verification error occured. (Neither SSLerr() codes nor alerts 7161 are directly visible to potential attackers, but the information 7162 may leak via logfiles.) 7163 7164 Similar changes are not required for the SSL 2.0 implementation 7165 because the number of padding bytes is sent in clear for SSL 2.0, 7166 and the extra bytes are just ignored. However ssl/s2_pkt.c 7167 failed to verify that the purported number of padding bytes is in 7168 the legal range. 7169 [Bodo Moeller] 7170 7171 *) Add OpenUNIX-8 support including shared libraries 7172 (Boyd Lynn Gerber <gerberb@zenez.com>). 7173 [Lutz Jaenicke] 7174 7175 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid 7176 'wristwatch attack' using huge encoding parameters (cf. 7177 James H. Manger's CRYPTO 2001 paper). Note that the 7178 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use 7179 encoding parameters and hence was not vulnerable. 7180 [Bodo Moeller] 7181 7182 *) BN_sqr() bug fix. 7183 [Ulf M��ller, reported by Jim Ellis <jim.ellis@cavium.com>] 7184 7185 *) Rabin-Miller test analyses assume uniformly distributed witnesses, 7186 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand() 7187 followed by modular reduction. 7188 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>] 7189 7190 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range() 7191 equivalent based on BN_pseudo_rand() instead of BN_rand(). 7192 [Bodo Moeller] 7193 7194 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB). 7195 This function was broken, as the check for a new client hello message 7196 to handle SGC did not allow these large messages. 7197 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.) 7198 [Lutz Jaenicke] 7199 7200 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long](). 7201 [Lutz Jaenicke] 7202 7203 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl() 7204 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>). 7205 [Lutz Jaenicke] 7206 7207 *) Rework the configuration and shared library support for Tru64 Unix. 7208 The configuration part makes use of modern compiler features and 7209 still retains old compiler behavior for those that run older versions 7210 of the OS. The shared library support part includes a variant that 7211 uses the RPATH feature, and is available through the special 7212 configuration target "alpha-cc-rpath", which will never be selected 7213 automatically. 7214 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte] 7215 7216 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message() 7217 with the same message size as in ssl3_get_certificate_request(). 7218 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest 7219 messages might inadvertently be reject as too long. 7220 [Petr Lampa <lampa@fee.vutbr.cz>] 7221 7222 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX). 7223 [Andy Polyakov] 7224 7225 *) Modified SSL library such that the verify_callback that has been set 7226 specificly for an SSL object with SSL_set_verify() is actually being 7227 used. Before the change, a verify_callback set with this function was 7228 ignored and the verify_callback() set in the SSL_CTX at the time of 7229 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced 7230 to allow the necessary settings. 7231 [Lutz Jaenicke] 7232 7233 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c 7234 explicitly to NULL, as at least on Solaris 8 this seems not always to be 7235 done automatically (in contradiction to the requirements of the C 7236 standard). This made problems when used from OpenSSH. 7237 [Lutz Jaenicke] 7238 7239 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored 7240 dh->length and always used 7241 7242 BN_rand_range(priv_key, dh->p). 7243 7244 BN_rand_range() is not necessary for Diffie-Hellman, and this 7245 specific range makes Diffie-Hellman unnecessarily inefficient if 7246 dh->length (recommended exponent length) is much smaller than the 7247 length of dh->p. We could use BN_rand_range() if the order of 7248 the subgroup was stored in the DH structure, but we only have 7249 dh->length. 7250 7251 So switch back to 7252 7253 BN_rand(priv_key, l, ...) 7254 7255 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1 7256 otherwise. 7257 [Bodo Moeller] 7258 7259 *) In 7260 7261 RSA_eay_public_encrypt 7262 RSA_eay_private_decrypt 7263 RSA_eay_private_encrypt (signing) 7264 RSA_eay_public_decrypt (signature verification) 7265 7266 (default implementations for RSA_public_encrypt, 7267 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt), 7268 always reject numbers >= n. 7269 [Bodo Moeller] 7270 7271 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2 7272 to synchronize access to 'locking_thread'. This is necessary on 7273 systems where access to 'locking_thread' (an 'unsigned long' 7274 variable) is not atomic. 7275 [Bodo Moeller] 7276 7277 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID 7278 *before* setting the 'crypto_lock_rand' flag. The previous code had 7279 a race condition if 0 is a valid thread ID. 7280 [Travis Vitek <vitek@roguewave.com>] 7281 7282 *) Add support for shared libraries under Irix. 7283 [Albert Chin-A-Young <china@thewrittenword.com>] 7284 7285 *) Add configuration option to build on Linux on both big-endian and 7286 little-endian MIPS. 7287 [Ralf Baechle <ralf@uni-koblenz.de>] 7288 7289 *) Add the possibility to create shared libraries on HP-UX. 7290 [Richard Levitte] 7291 7292 Changes between 0.9.6a and 0.9.6b [9 Jul 2001] 7293 7294 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c) 7295 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by 7296 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>: 7297 PRNG state recovery was possible based on the output of 7298 one PRNG request appropriately sized to gain knowledge on 7299 'md' followed by enough consecutive 1-byte PRNG requests 7300 to traverse all of 'state'. 7301 7302 1. When updating 'md_local' (the current thread's copy of 'md') 7303 during PRNG output generation, hash all of the previous 7304 'md_local' value, not just the half used for PRNG output. 7305 7306 2. Make the number of bytes from 'state' included into the hash 7307 independent from the number of PRNG bytes requested. 7308 7309 The first measure alone would be sufficient to avoid 7310 Markku-Juhani's attack. (Actually it had never occurred 7311 to me that the half of 'md_local' used for chaining was the 7312 half from which PRNG output bytes were taken -- I had always 7313 assumed that the secret half would be used.) The second 7314 measure makes sure that additional data from 'state' is never 7315 mixed into 'md_local' in small portions; this heuristically 7316 further strengthens the PRNG. 7317 [Bodo Moeller] 7318 7319 *) Fix crypto/bn/asm/mips3.s. 7320 [Andy Polyakov] 7321 7322 *) When only the key is given to "enc", the IV is undefined. Print out 7323 an error message in this case. 7324 [Lutz Jaenicke] 7325 7326 *) Handle special case when X509_NAME is empty in X509 printing routines. 7327 [Steve Henson] 7328 7329 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are 7330 positive and less than q. 7331 [Bodo Moeller] 7332 7333 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is 7334 used: it isn't thread safe and the add_lock_callback should handle 7335 that itself. 7336 [Paul Rose <Paul.Rose@bridge.com>] 7337 7338 *) Verify that incoming data obeys the block size in 7339 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c). 7340 [Bodo Moeller] 7341 7342 *) Fix OAEP check. 7343 [Ulf M��ller, Bodo M��ller] 7344 7345 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5 7346 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5 7347 when fixing the server behaviour for backwards-compatible 'client 7348 hello' messages. (Note that the attack is impractical against 7349 SSL 3.0 and TLS 1.0 anyway because length and version checking 7350 means that the probability of guessing a valid ciphertext is 7351 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98 7352 paper.) 7353 7354 Before 0.9.5, the countermeasure (hide the error by generating a 7355 random 'decryption result') did not work properly because 7356 ERR_clear_error() was missing, meaning that SSL_get_error() would 7357 detect the supposedly ignored error. 7358 7359 Both problems are now fixed. 7360 [Bodo Moeller] 7361 7362 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096 7363 (previously it was 1024). 7364 [Bodo Moeller] 7365 7366 *) Fix for compatibility mode trust settings: ignore trust settings 7367 unless some valid trust or reject settings are present. 7368 [Steve Henson] 7369 7370 *) Fix for blowfish EVP: its a variable length cipher. 7371 [Steve Henson] 7372 7373 *) Fix various bugs related to DSA S/MIME verification. Handle missing 7374 parameters in DSA public key structures and return an error in the 7375 DSA routines if parameters are absent. 7376 [Steve Henson] 7377 7378 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd" 7379 in the current directory if neither $RANDFILE nor $HOME was set. 7380 RAND_file_name() in 0.9.6a returned NULL in this case. This has 7381 caused some confusion to Windows users who haven't defined $HOME. 7382 Thus RAND_file_name() is changed again: e_os.h can define a 7383 DEFAULT_HOME, which will be used if $HOME is not set. 7384 For Windows, we use "C:"; on other platforms, we still require 7385 environment variables. 7386 7387 *) Move 'if (!initialized) RAND_poll()' into regions protected by 7388 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids 7389 having multiple threads call RAND_poll() concurrently. 7390 [Bodo Moeller] 7391 7392 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a 7393 combination of a flag and a thread ID variable. 7394 Otherwise while one thread is in ssleay_rand_bytes (which sets the 7395 flag), *other* threads can enter ssleay_add_bytes without obeying 7396 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock 7397 that they do not hold after the first thread unsets add_do_not_lock). 7398 [Bodo Moeller] 7399 7400 *) Change bctest again: '-x' expressions are not available in all 7401 versions of 'test'. 7402 [Bodo Moeller] 7403 7404 Changes between 0.9.6 and 0.9.6a [5 Apr 2001] 7405 7406 *) Fix a couple of memory leaks in PKCS7_dataDecode() 7407 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>] 7408 7409 *) Change Configure and Makefiles to provide EXE_EXT, which will contain 7410 the default extension for executables, if any. Also, make the perl 7411 scripts that use symlink() to test if it really exists and use "cp" 7412 if it doesn't. All this made OpenSSL compilable and installable in 7413 CygWin. 7414 [Richard Levitte] 7415 7416 *) Fix for asn1_GetSequence() for indefinite length constructed data. 7417 If SEQUENCE is length is indefinite just set c->slen to the total 7418 amount of data available. 7419 [Steve Henson, reported by shige@FreeBSD.org] 7420 [This change does not apply to 0.9.7.] 7421 7422 *) Change bctest to avoid here-documents inside command substitution 7423 (workaround for FreeBSD /bin/sh bug). 7424 For compatibility with Ultrix, avoid shell functions (introduced 7425 in the bctest version that searches along $PATH). 7426 [Bodo Moeller] 7427 7428 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes 7429 with des_encrypt() defined on some operating systems, like Solaris 7430 and UnixWare. 7431 [Richard Levitte] 7432 7433 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton: 7434 On the Importance of Eliminating Errors in Cryptographic 7435 Computations, J. Cryptology 14 (2001) 2, 101-119, 7436 http://theory.stanford.edu/~dabo/papers/faults.ps.gz). 7437 [Ulf Moeller] 7438 7439 *) MIPS assembler BIGNUM division bug fix. 7440 [Andy Polyakov] 7441 7442 *) Disabled incorrect Alpha assembler code. 7443 [Richard Levitte] 7444 7445 *) Fix PKCS#7 decode routines so they correctly update the length 7446 after reading an EOC for the EXPLICIT tag. 7447 [Steve Henson] 7448 [This change does not apply to 0.9.7.] 7449 7450 *) Fix bug in PKCS#12 key generation routines. This was triggered 7451 if a 3DES key was generated with a 0 initial byte. Include 7452 PKCS12_BROKEN_KEYGEN compilation option to retain the old 7453 (but broken) behaviour. 7454 [Steve Henson] 7455 7456 *) Enhance bctest to search for a working bc along $PATH and print 7457 it when found. 7458 [Tim Rice <tim@multitalents.net> via Richard Levitte] 7459 7460 *) Fix memory leaks in err.c: free err_data string if necessary; 7461 don't write to the wrong index in ERR_set_error_data. 7462 [Bodo Moeller] 7463 7464 *) Implement ssl23_peek (analogous to ssl23_read), which previously 7465 did not exist. 7466 [Bodo Moeller] 7467 7468 *) Replace rdtsc with _emit statements for VC++ version 5. 7469 [Jeremy Cooper <jeremy@baymoo.org>] 7470 7471 *) Make it possible to reuse SSLv2 sessions. 7472 [Richard Levitte] 7473 7474 *) In copy_email() check for >= 0 as a return value for 7475 X509_NAME_get_index_by_NID() since 0 is a valid index. 7476 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>] 7477 7478 *) Avoid coredump with unsupported or invalid public keys by checking if 7479 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when 7480 PKCS7_verify() fails with non detached data. 7481 [Steve Henson] 7482 7483 *) Don't use getenv in library functions when run as setuid/setgid. 7484 New function OPENSSL_issetugid(). 7485 [Ulf Moeller] 7486 7487 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c) 7488 due to incorrect handling of multi-threading: 7489 7490 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl(). 7491 7492 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on(). 7493 7494 3. Count how many times MemCheck_off() has been called so that 7495 nested use can be treated correctly. This also avoids 7496 inband-signalling in the previous code (which relied on the 7497 assumption that thread ID 0 is impossible). 7498 [Bodo Moeller] 7499 7500 *) Add "-rand" option also to s_client and s_server. 7501 [Lutz Jaenicke] 7502 7503 *) Fix CPU detection on Irix 6.x. 7504 [Kurt Hockenbury <khockenb@stevens-tech.edu> and 7505 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>] 7506 7507 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME 7508 was empty. 7509 [Steve Henson] 7510 [This change does not apply to 0.9.7.] 7511 7512 *) Use the cached encoding of an X509_NAME structure rather than 7513 copying it. This is apparently the reason for the libsafe "errors" 7514 but the code is actually correct. 7515 [Steve Henson] 7516 7517 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent 7518 Bleichenbacher's DSA attack. 7519 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits 7520 to be set and top=0 forces the highest bit to be set; top=-1 is new 7521 and leaves the highest bit random. 7522 [Ulf Moeller, Bodo Moeller] 7523 7524 *) In the NCONF_...-based implementations for CONF_... queries 7525 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using 7526 a temporary CONF structure with the data component set to NULL 7527 (which gives segmentation faults in lh_retrieve). 7528 Instead, use NULL for the CONF pointer in CONF_get_string and 7529 CONF_get_number (which may use environment variables) and directly 7530 return NULL from CONF_get_section. 7531 [Bodo Moeller] 7532 7533 *) Fix potential buffer overrun for EBCDIC. 7534 [Ulf Moeller] 7535 7536 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign 7537 keyUsage if basicConstraints absent for a CA. 7538 [Steve Henson] 7539 7540 *) Make SMIME_write_PKCS7() write mail header values with a format that 7541 is more generally accepted (no spaces before the semicolon), since 7542 some programs can't parse those values properly otherwise. Also make 7543 sure BIO's that break lines after each write do not create invalid 7544 headers. 7545 [Richard Levitte] 7546 7547 *) Make the CRL encoding routines work with empty SEQUENCE OF. The 7548 macros previously used would not encode an empty SEQUENCE OF 7549 and break the signature. 7550 [Steve Henson] 7551 [This change does not apply to 0.9.7.] 7552 7553 *) Zero the premaster secret after deriving the master secret in 7554 DH ciphersuites. 7555 [Steve Henson] 7556 7557 *) Add some EVP_add_digest_alias registrations (as found in 7558 OpenSSL_add_all_digests()) to SSL_library_init() 7559 aka OpenSSL_add_ssl_algorithms(). This provides improved 7560 compatibility with peers using X.509 certificates 7561 with unconventional AlgorithmIdentifier OIDs. 7562 [Bodo Moeller] 7563 7564 *) Fix for Irix with NO_ASM. 7565 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>] 7566 7567 *) ./config script fixes. 7568 [Ulf Moeller, Richard Levitte] 7569 7570 *) Fix 'openssl passwd -1'. 7571 [Bodo Moeller] 7572 7573 *) Change PKCS12_key_gen_asc() so it can cope with non null 7574 terminated strings whose length is passed in the passlen 7575 parameter, for example from PEM callbacks. This was done 7576 by adding an extra length parameter to asc2uni(). 7577 [Steve Henson, reported by <oddissey@samsung.co.kr>] 7578 7579 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn 7580 call failed, free the DSA structure. 7581 [Bodo Moeller] 7582 7583 *) Fix to uni2asc() to cope with zero length Unicode strings. 7584 These are present in some PKCS#12 files. 7585 [Steve Henson] 7586 7587 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c). 7588 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits 7589 when writing a 32767 byte record. 7590 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>] 7591 7592 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c), 7593 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}. 7594 7595 (RSA objects have a reference count access to which is protected 7596 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c], 7597 so they are meant to be shared between threads.) 7598 [Bodo Moeller, Geoff Thorpe; original patch submitted by 7599 "Reddie, Steven" <Steven.Reddie@ca.com>] 7600 7601 *) Fix a deadlock in CRYPTO_mem_leaks(). 7602 [Bodo Moeller] 7603 7604 *) Use better test patterns in bntest. 7605 [Ulf M��ller] 7606 7607 *) rand_win.c fix for Borland C. 7608 [Ulf M��ller] 7609 7610 *) BN_rshift bugfix for n == 0. 7611 [Bodo Moeller] 7612 7613 *) Add a 'bctest' script that checks for some known 'bc' bugs 7614 so that 'make test' does not abort just because 'bc' is broken. 7615 [Bodo Moeller] 7616 7617 *) Store verify_result within SSL_SESSION also for client side to 7618 avoid potential security hole. (Re-used sessions on the client side 7619 always resulted in verify_result==X509_V_OK, not using the original 7620 result of the server certificate verification.) 7621 [Lutz Jaenicke] 7622 7623 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type 7624 SSL3_RT_APPLICATION_DATA, return 0. 7625 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true. 7626 [Bodo Moeller] 7627 7628 *) Fix SSL_peek: 7629 Both ssl2_peek and ssl3_peek, which were totally broken in earlier 7630 releases, have been re-implemented by renaming the previous 7631 implementations of ssl2_read and ssl3_read to ssl2_read_internal 7632 and ssl3_read_internal, respectively, and adding 'peek' parameters 7633 to them. The new ssl[23]_{read,peek} functions are calls to 7634 ssl[23]_read_internal with the 'peek' flag set appropriately. 7635 A 'peek' parameter has also been added to ssl3_read_bytes, which 7636 does the actual work for ssl3_read_internal. 7637 [Bodo Moeller] 7638 7639 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling 7640 the method-specific "init()" handler. Also clean up ex_data after 7641 calling the method-specific "finish()" handler. Previously, this was 7642 happening the other way round. 7643 [Geoff Thorpe] 7644 7645 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16. 7646 The previous value, 12, was not always sufficient for BN_mod_exp(). 7647 [Bodo Moeller] 7648 7649 *) Make sure that shared libraries get the internal name engine with 7650 the full version number and not just 0. This should mark the 7651 shared libraries as not backward compatible. Of course, this should 7652 be changed again when we can guarantee backward binary compatibility. 7653 [Richard Levitte] 7654 7655 *) Fix typo in get_cert_by_subject() in by_dir.c 7656 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>] 7657 7658 *) Rework the system to generate shared libraries: 7659 7660 - Make note of the expected extension for the shared libraries and 7661 if there is a need for symbolic links from for example libcrypto.so.0 7662 to libcrypto.so.0.9.7. There is extended info in Configure for 7663 that. 7664 7665 - Make as few rebuilds of the shared libraries as possible. 7666 7667 - Still avoid linking the OpenSSL programs with the shared libraries. 7668 7669 - When installing, install the shared libraries separately from the 7670 static ones. 7671 [Richard Levitte] 7672 7673 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument. 7674 7675 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new 7676 and not in SSL_clear because the latter is also used by the 7677 accept/connect functions; previously, the settings made by 7678 SSL_set_read_ahead would be lost during the handshake. 7679 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>] 7680 7681 *) Correct util/mkdef.pl to be selective about disabled algorithms. 7682 Previously, it would create entries for disableed algorithms no 7683 matter what. 7684 [Richard Levitte] 7685 7686 *) Added several new manual pages for SSL_* function. 7687 [Lutz Jaenicke] 7688 7689 Changes between 0.9.5a and 0.9.6 [24 Sep 2000] 7690 7691 *) In ssl23_get_client_hello, generate an error message when faced 7692 with an initial SSL 3.0/TLS record that is too small to contain the 7693 first two bytes of the ClientHello message, i.e. client_version. 7694 (Note that this is a pathologic case that probably has never happened 7695 in real life.) The previous approach was to use the version number 7696 from the record header as a substitute; but our protocol choice 7697 should not depend on that one because it is not authenticated 7698 by the Finished messages. 7699 [Bodo Moeller] 7700 7701 *) More robust randomness gathering functions for Windows. 7702 [Jeffrey Altman <jaltman@columbia.edu>] 7703 7704 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is 7705 not set then we don't setup the error code for issuer check errors 7706 to avoid possibly overwriting other errors which the callback does 7707 handle. If an application does set the flag then we assume it knows 7708 what it is doing and can handle the new informational codes 7709 appropriately. 7710 [Steve Henson] 7711 7712 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for 7713 a general "ANY" type, as such it should be able to decode anything 7714 including tagged types. However it didn't check the class so it would 7715 wrongly interpret tagged types in the same way as their universal 7716 counterpart and unknown types were just rejected. Changed so that the 7717 tagged and unknown types are handled in the same way as a SEQUENCE: 7718 that is the encoding is stored intact. There is also a new type 7719 "V_ASN1_OTHER" which is used when the class is not universal, in this 7720 case we have no idea what the actual type is so we just lump them all 7721 together. 7722 [Steve Henson] 7723 7724 *) On VMS, stdout may very well lead to a file that is written to 7725 in a record-oriented fashion. That means that every write() will 7726 write a separate record, which will be read separately by the 7727 programs trying to read from it. This can be very confusing. 7728 7729 The solution is to put a BIO filter in the way that will buffer 7730 text until a linefeed is reached, and then write everything a 7731 line at a time, so every record written will be an actual line, 7732 not chunks of lines and not (usually doesn't happen, but I've 7733 seen it once) several lines in one record. BIO_f_linebuffer() is 7734 the answer. 7735 7736 Currently, it's a VMS-only method, because that's where it has 7737 been tested well enough. 7738 [Richard Levitte] 7739 7740 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery, 7741 it can return incorrect results. 7742 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a, 7743 but it was in 0.9.6-beta[12].) 7744 [Bodo Moeller] 7745 7746 *) Disable the check for content being present when verifying detached 7747 signatures in pk7_smime.c. Some versions of Netscape (wrongly) 7748 include zero length content when signing messages. 7749 [Steve Henson] 7750 7751 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR 7752 BIO_ctrl (for BIO pairs). 7753 [Bodo M��ller] 7754 7755 *) Add DSO method for VMS. 7756 [Richard Levitte] 7757 7758 *) Bug fix: Montgomery multiplication could produce results with the 7759 wrong sign. 7760 [Ulf M��ller] 7761 7762 *) Add RPM specification openssl.spec and modify it to build three 7763 packages. The default package contains applications, application 7764 documentation and run-time libraries. The devel package contains 7765 include files, static libraries and function documentation. The 7766 doc package contains the contents of the doc directory. The original 7767 openssl.spec was provided by Damien Miller <djm@mindrot.org>. 7768 [Richard Levitte] 7769 7770 *) Add a large number of documentation files for many SSL routines. 7771 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>] 7772 7773 *) Add a configuration entry for Sony News 4. 7774 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>] 7775 7776 *) Don't set the two most significant bits to one when generating a 7777 random number < q in the DSA library. 7778 [Ulf M��ller] 7779 7780 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default 7781 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if 7782 the underlying transport is blocking) if a handshake took place. 7783 (The default behaviour is needed by applications such as s_client 7784 and s_server that use select() to determine when to use SSL_read; 7785 but for applications that know in advance when to expect data, it 7786 just makes things more complicated.) 7787 [Bodo Moeller] 7788 7789 *) Add RAND_egd_bytes(), which gives control over the number of bytes read 7790 from EGD. 7791 [Ben Laurie] 7792 7793 *) Add a few more EBCDIC conditionals that make `req' and `x509' 7794 work better on such systems. 7795 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 7796 7797 *) Add two demo programs for PKCS12_parse() and PKCS12_create(). 7798 Update PKCS12_parse() so it copies the friendlyName and the 7799 keyid to the certificates aux info. 7800 [Steve Henson] 7801 7802 *) Fix bug in PKCS7_verify() which caused an infinite loop 7803 if there was more than one signature. 7804 [Sven Uszpelkat <su@celocom.de>] 7805 7806 *) Major change in util/mkdef.pl to include extra information 7807 about each symbol, as well as presentig variables as well 7808 as functions. This change means that there's n more need 7809 to rebuild the .num files when some algorithms are excluded. 7810 [Richard Levitte] 7811 7812 *) Allow the verify time to be set by an application, 7813 rather than always using the current time. 7814 [Steve Henson] 7815 7816 *) Phase 2 verify code reorganisation. The certificate 7817 verify code now looks up an issuer certificate by a 7818 number of criteria: subject name, authority key id 7819 and key usage. It also verifies self signed certificates 7820 by the same criteria. The main comparison function is 7821 X509_check_issued() which performs these checks. 7822 7823 Lot of changes were necessary in order to support this 7824 without completely rewriting the lookup code. 7825 7826 Authority and subject key identifier are now cached. 7827 7828 The LHASH 'certs' is X509_STORE has now been replaced 7829 by a STACK_OF(X509_OBJECT). This is mainly because an 7830 LHASH can't store or retrieve multiple objects with 7831 the same hash value. 7832 7833 As a result various functions (which were all internal 7834 use only) have changed to handle the new X509_STORE 7835 structure. This will break anything that messed round 7836 with X509_STORE internally. 7837 7838 The functions X509_STORE_add_cert() now checks for an 7839 exact match, rather than just subject name. 7840 7841 The X509_STORE API doesn't directly support the retrieval 7842 of multiple certificates matching a given criteria, however 7843 this can be worked round by performing a lookup first 7844 (which will fill the cache with candidate certificates) 7845 and then examining the cache for matches. This is probably 7846 the best we can do without throwing out X509_LOOKUP 7847 entirely (maybe later...). 7848 7849 The X509_VERIFY_CTX structure has been enhanced considerably. 7850 7851 All certificate lookup operations now go via a get_issuer() 7852 callback. Although this currently uses an X509_STORE it 7853 can be replaced by custom lookups. This is a simple way 7854 to bypass the X509_STORE hackery necessary to make this 7855 work and makes it possible to use more efficient techniques 7856 in future. A very simple version which uses a simple 7857 STACK for its trusted certificate store is also provided 7858 using X509_STORE_CTX_trusted_stack(). 7859 7860 The verify_cb() and verify() callbacks now have equivalents 7861 in the X509_STORE_CTX structure. 7862 7863 X509_STORE_CTX also has a 'flags' field which can be used 7864 to customise the verify behaviour. 7865 [Steve Henson] 7866 7867 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which 7868 excludes S/MIME capabilities. 7869 [Steve Henson] 7870 7871 *) When a certificate request is read in keep a copy of the 7872 original encoding of the signed data and use it when outputing 7873 again. Signatures then use the original encoding rather than 7874 a decoded, encoded version which may cause problems if the 7875 request is improperly encoded. 7876 [Steve Henson] 7877 7878 *) For consistency with other BIO_puts implementations, call 7879 buffer_write(b, ...) directly in buffer_puts instead of calling 7880 BIO_write(b, ...). 7881 7882 In BIO_puts, increment b->num_write as in BIO_write. 7883 [Peter.Sylvester@EdelWeb.fr] 7884 7885 *) Fix BN_mul_word for the case where the word is 0. (We have to use 7886 BN_zero, we may not return a BIGNUM with an array consisting of 7887 words set to zero.) 7888 [Bodo Moeller] 7889 7890 *) Avoid calling abort() from within the library when problems are 7891 detected, except if preprocessor symbols have been defined 7892 (such as REF_CHECK, BN_DEBUG etc.). 7893 [Bodo Moeller] 7894 7895 *) New openssl application 'rsautl'. This utility can be 7896 used for low level RSA operations. DER public key 7897 BIO/fp routines also added. 7898 [Steve Henson] 7899 7900 *) New Configure entry and patches for compiling on QNX 4. 7901 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>] 7902 7903 *) A demo state-machine implementation was sponsored by 7904 Nuron (http://www.nuron.com/) and is now available in 7905 demos/state_machine. 7906 [Ben Laurie] 7907 7908 *) New options added to the 'dgst' utility for signature 7909 generation and verification. 7910 [Steve Henson] 7911 7912 *) Unrecognized PKCS#7 content types are now handled via a 7913 catch all ASN1_TYPE structure. This allows unsupported 7914 types to be stored as a "blob" and an application can 7915 encode and decode it manually. 7916 [Steve Henson] 7917 7918 *) Fix various signed/unsigned issues to make a_strex.c 7919 compile under VC++. 7920 [Oscar Jacobsson <oscar.jacobsson@celocom.com>] 7921 7922 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct 7923 length if passed a buffer. ASN1_INTEGER_to_BN failed 7924 if passed a NULL BN and its argument was negative. 7925 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>] 7926 7927 *) Modification to PKCS#7 encoding routines to output definite 7928 length encoding. Since currently the whole structures are in 7929 memory there's not real point in using indefinite length 7930 constructed encoding. However if OpenSSL is compiled with 7931 the flag PKCS7_INDEFINITE_ENCODING the old form is used. 7932 [Steve Henson] 7933 7934 *) Added BIO_vprintf() and BIO_vsnprintf(). 7935 [Richard Levitte] 7936 7937 *) Added more prefixes to parse for in the the strings written 7938 through a logging bio, to cover all the levels that are available 7939 through syslog. The prefixes are now: 7940 7941 PANIC, EMERG, EMR => LOG_EMERG 7942 ALERT, ALR => LOG_ALERT 7943 CRIT, CRI => LOG_CRIT 7944 ERROR, ERR => LOG_ERR 7945 WARNING, WARN, WAR => LOG_WARNING 7946 NOTICE, NOTE, NOT => LOG_NOTICE 7947 INFO, INF => LOG_INFO 7948 DEBUG, DBG => LOG_DEBUG 7949 7950 and as before, if none of those prefixes are present at the 7951 beginning of the string, LOG_ERR is chosen. 7952 7953 On Win32, the LOG_* levels are mapped according to this: 7954 7955 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE 7956 LOG_WARNING => EVENTLOG_WARNING_TYPE 7957 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE 7958 7959 [Richard Levitte] 7960 7961 *) Made it possible to reconfigure with just the configuration 7962 argument "reconf" or "reconfigure". The command line arguments 7963 are stored in Makefile.ssl in the variable CONFIGURE_ARGS, 7964 and are retrieved from there when reconfiguring. 7965 [Richard Levitte] 7966 7967 *) MD4 implemented. 7968 [Assar Westerlund <assar@sics.se>, Richard Levitte] 7969 7970 *) Add the arguments -CAfile and -CApath to the pkcs12 utility. 7971 [Richard Levitte] 7972 7973 *) The obj_dat.pl script was messing up the sorting of object 7974 names. The reason was that it compared the quoted version 7975 of strings as a result "OCSP" > "OCSP Signing" because 7976 " > SPACE. Changed script to store unquoted versions of 7977 names and add quotes on output. It was also omitting some 7978 names from the lookup table if they were given a default 7979 value (that is if SN is missing it is given the same 7980 value as LN and vice versa), these are now added on the 7981 grounds that if an object has a name we should be able to 7982 look it up. Finally added warning output when duplicate 7983 short or long names are found. 7984 [Steve Henson] 7985 7986 *) Changes needed for Tandem NSK. 7987 [Scott Uroff <scott@xypro.com>] 7988 7989 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in 7990 RSA_padding_check_SSLv23(), special padding was never detected 7991 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol 7992 version rollback attacks was not effective. 7993 7994 In s23_clnt.c, don't use special rollback-attack detection padding 7995 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the 7996 client; similarly, in s23_srvr.c, don't do the rollback check if 7997 SSL 2.0 is the only protocol enabled in the server. 7998 [Bodo Moeller] 7999 8000 *) Make it possible to get hexdumps of unprintable data with 'openssl 8001 asn1parse'. By implication, the functions ASN1_parse_dump() and 8002 BIO_dump_indent() are added. 8003 [Richard Levitte] 8004 8005 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex() 8006 these print out strings and name structures based on various 8007 flags including RFC2253 support and proper handling of 8008 multibyte characters. Added options to the 'x509' utility 8009 to allow the various flags to be set. 8010 [Steve Henson] 8011 8012 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME. 8013 Also change the functions X509_cmp_current_time() and 8014 X509_gmtime_adj() work with an ASN1_TIME structure, 8015 this will enable certificates using GeneralizedTime in validity 8016 dates to be checked. 8017 [Steve Henson] 8018 8019 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid 8020 negative public key encodings) on by default, 8021 NO_NEG_PUBKEY_BUG can be set to disable it. 8022 [Steve Henson] 8023 8024 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT 8025 content octets. An i2c_ASN1_OBJECT is unnecessary because 8026 the encoding can be trivially obtained from the structure. 8027 [Steve Henson] 8028 8029 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock), 8030 not read locks (CRYPTO_r_[un]lock). 8031 [Bodo Moeller] 8032 8033 *) A first attempt at creating official support for shared 8034 libraries through configuration. I've kept it so the 8035 default is static libraries only, and the OpenSSL programs 8036 are always statically linked for now, but there are 8037 preparations for dynamic linking in place. 8038 This has been tested on Linux and Tru64. 8039 [Richard Levitte] 8040 8041 *) Randomness polling function for Win9x, as described in: 8042 Peter Gutmann, Software Generation of Practically Strong 8043 Random Numbers. 8044 [Ulf M��ller] 8045 8046 *) Fix so PRNG is seeded in req if using an already existing 8047 DSA key. 8048 [Steve Henson] 8049 8050 *) New options to smime application. -inform and -outform 8051 allow alternative formats for the S/MIME message including 8052 PEM and DER. The -content option allows the content to be 8053 specified separately. This should allow things like Netscape 8054 form signing output easier to verify. 8055 [Steve Henson] 8056 8057 *) Fix the ASN1 encoding of tags using the 'long form'. 8058 [Steve Henson] 8059 8060 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT 8061 STRING types. These convert content octets to and from the 8062 underlying type. The actual tag and length octets are 8063 already assumed to have been read in and checked. These 8064 are needed because all other string types have virtually 8065 identical handling apart from the tag. By having versions 8066 of the ASN1 functions that just operate on content octets 8067 IMPLICIT tagging can be handled properly. It also allows 8068 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED 8069 and ASN1_INTEGER are identical apart from the tag. 8070 [Steve Henson] 8071 8072 *) Change the handling of OID objects as follows: 8073 8074 - New object identifiers are inserted in objects.txt, following 8075 the syntax given in objects.README. 8076 - objects.pl is used to process obj_mac.num and create a new 8077 obj_mac.h. 8078 - obj_dat.pl is used to create a new obj_dat.h, using the data in 8079 obj_mac.h. 8080 8081 This is currently kind of a hack, and the perl code in objects.pl 8082 isn't very elegant, but it works as I intended. The simplest way 8083 to check that it worked correctly is to look in obj_dat.h and 8084 check the array nid_objs and make sure the objects haven't moved 8085 around (this is important!). Additions are OK, as well as 8086 consistent name changes. 8087 [Richard Levitte] 8088 8089 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1'). 8090 [Bodo Moeller] 8091 8092 *) Addition of the command line parameter '-rand file' to 'openssl req'. 8093 The given file adds to whatever has already been seeded into the 8094 random pool through the RANDFILE configuration file option or 8095 environment variable, or the default random state file. 8096 [Richard Levitte] 8097 8098 *) mkstack.pl now sorts each macro group into lexical order. 8099 Previously the output order depended on the order the files 8100 appeared in the directory, resulting in needless rewriting 8101 of safestack.h . 8102 [Steve Henson] 8103 8104 *) Patches to make OpenSSL compile under Win32 again. Mostly 8105 work arounds for the VC++ problem that it treats func() as 8106 func(void). Also stripped out the parts of mkdef.pl that 8107 added extra typesafe functions: these no longer exist. 8108 [Steve Henson] 8109 8110 *) Reorganisation of the stack code. The macros are now all 8111 collected in safestack.h . Each macro is defined in terms of 8112 a "stack macro" of the form SKM_<name>(type, a, b). The 8113 DEBUG_SAFESTACK is now handled in terms of function casts, 8114 this has the advantage of retaining type safety without the 8115 use of additional functions. If DEBUG_SAFESTACK is not defined 8116 then the non typesafe macros are used instead. Also modified the 8117 mkstack.pl script to handle the new form. Needs testing to see 8118 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK 8119 the default if no major problems. Similar behaviour for ASN1_SET_OF 8120 and PKCS12_STACK_OF. 8121 [Steve Henson] 8122 8123 *) When some versions of IIS use the 'NET' form of private key the 8124 key derivation algorithm is different. Normally MD5(password) is 8125 used as a 128 bit RC4 key. In the modified case 8126 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some 8127 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same 8128 as the old Netscape_RSA functions except they have an additional 8129 'sgckey' parameter which uses the modified algorithm. Also added 8130 an -sgckey command line option to the rsa utility. Thanks to 8131 Adrian Peck <bertie@ncipher.com> for posting details of the modified 8132 algorithm to openssl-dev. 8133 [Steve Henson] 8134 8135 *) The evp_local.h macros were using 'c.##kname' which resulted in 8136 invalid expansion on some systems (SCO 5.0.5 for example). 8137 Corrected to 'c.kname'. 8138 [Phillip Porch <root@theporch.com>] 8139 8140 *) New X509_get1_email() and X509_REQ_get1_email() functions that return 8141 a STACK of email addresses from a certificate or request, these look 8142 in the subject name and the subject alternative name extensions and 8143 omit any duplicate addresses. 8144 [Steve Henson] 8145 8146 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows. 8147 This makes DSA verification about 2 % faster. 8148 [Bodo Moeller] 8149 8150 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5 8151 (meaning that now 2^5 values will be precomputed, which is only 4 KB 8152 plus overhead for 1024 bit moduli). 8153 This makes exponentiations about 0.5 % faster for 1024 bit 8154 exponents (as measured by "openssl speed rsa2048"). 8155 [Bodo Moeller] 8156 8157 *) Rename memory handling macros to avoid conflicts with other 8158 software: 8159 Malloc => OPENSSL_malloc 8160 Malloc_locked => OPENSSL_malloc_locked 8161 Realloc => OPENSSL_realloc 8162 Free => OPENSSL_free 8163 [Richard Levitte] 8164 8165 *) New function BN_mod_exp_mont_word for small bases (roughly 15% 8166 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange). 8167 [Bodo Moeller] 8168 8169 *) CygWin32 support. 8170 [John Jarvie <jjarvie@newsguy.com>] 8171 8172 *) The type-safe stack code has been rejigged. It is now only compiled 8173 in when OpenSSL is configured with the DEBUG_SAFESTACK option and 8174 by default all type-specific stack functions are "#define"d back to 8175 standard stack functions. This results in more streamlined output 8176 but retains the type-safety checking possibilities of the original 8177 approach. 8178 [Geoff Thorpe] 8179 8180 *) The STACK code has been cleaned up, and certain type declarations 8181 that didn't make a lot of sense have been brought in line. This has 8182 also involved a cleanup of sorts in safestack.h to more correctly 8183 map type-safe stack functions onto their plain stack counterparts. 8184 This work has also resulted in a variety of "const"ifications of 8185 lots of the code, especially "_cmp" operations which should normally 8186 be prototyped with "const" parameters anyway. 8187 [Geoff Thorpe] 8188 8189 *) When generating bytes for the first time in md_rand.c, 'stir the pool' 8190 by seeding with STATE_SIZE dummy bytes (with zero entropy count). 8191 (The PRNG state consists of two parts, the large pool 'state' and 'md', 8192 where all of 'md' is used each time the PRNG is used, but 'state' 8193 is used only indexed by a cyclic counter. As entropy may not be 8194 well distributed from the beginning, 'md' is important as a 8195 chaining variable. However, the output function chains only half 8196 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains 8197 all of 'md', and seeding with STATE_SIZE dummy bytes will result 8198 in all of 'state' being rewritten, with the new values depending 8199 on virtually all of 'md'. This overcomes the 80 bit limitation.) 8200 [Bodo Moeller] 8201 8202 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when 8203 the handshake is continued after ssl_verify_cert_chain(); 8204 otherwise, if SSL_VERIFY_NONE is set, remaining error codes 8205 can lead to 'unexplainable' connection aborts later. 8206 [Bodo Moeller; problem tracked down by Lutz Jaenicke] 8207 8208 *) Major EVP API cipher revision. 8209 Add hooks for extra EVP features. This allows various cipher 8210 parameters to be set in the EVP interface. Support added for variable 8211 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and 8212 setting of RC2 and RC5 parameters. 8213 8214 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length 8215 ciphers. 8216 8217 Remove lots of duplicated code from the EVP library. For example *every* 8218 cipher init() function handles the 'iv' in the same way according to the 8219 cipher mode. They also all do nothing if the 'key' parameter is NULL and 8220 for CFB and OFB modes they zero ctx->num. 8221 8222 New functionality allows removal of S/MIME code RC2 hack. 8223 8224 Most of the routines have the same form and so can be declared in terms 8225 of macros. 8226 8227 By shifting this to the top level EVP_CipherInit() it can be removed from 8228 all individual ciphers. If the cipher wants to handle IVs or keys 8229 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT 8230 flags. 8231 8232 Change lots of functions like EVP_EncryptUpdate() to now return a 8233 value: although software versions of the algorithms cannot fail 8234 any installed hardware versions can. 8235 [Steve Henson] 8236 8237 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if 8238 this option is set, tolerate broken clients that send the negotiated 8239 protocol version number instead of the requested protocol version 8240 number. 8241 [Bodo Moeller] 8242 8243 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag; 8244 i.e. non-zero for export ciphersuites, zero otherwise. 8245 Previous versions had this flag inverted, inconsistent with 8246 rsa_tmp_cb (..._TMP_RSA_CB). 8247 [Bodo Moeller; problem reported by Amit Chopra] 8248 8249 *) Add missing DSA library text string. Work around for some IIS 8250 key files with invalid SEQUENCE encoding. 8251 [Steve Henson] 8252 8253 *) Add a document (doc/standards.txt) that list all kinds of standards 8254 and so on that are implemented in OpenSSL. 8255 [Richard Levitte] 8256 8257 *) Enhance c_rehash script. Old version would mishandle certificates 8258 with the same subject name hash and wouldn't handle CRLs at all. 8259 Added -fingerprint option to crl utility, to support new c_rehash 8260 features. 8261 [Steve Henson] 8262 8263 *) Eliminate non-ANSI declarations in crypto.h and stack.h. 8264 [Ulf M��ller] 8265 8266 *) Fix for SSL server purpose checking. Server checking was 8267 rejecting certificates which had extended key usage present 8268 but no ssl client purpose. 8269 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>] 8270 8271 *) Make PKCS#12 code work with no password. The PKCS#12 spec 8272 is a little unclear about how a blank password is handled. 8273 Since the password in encoded as a BMPString with terminating 8274 double NULL a zero length password would end up as just the 8275 double NULL. However no password at all is different and is 8276 handled differently in the PKCS#12 key generation code. NS 8277 treats a blank password as zero length. MSIE treats it as no 8278 password on export: but it will try both on import. We now do 8279 the same: PKCS12_parse() tries zero length and no password if 8280 the password is set to "" or NULL (NULL is now a valid password: 8281 it wasn't before) as does the pkcs12 application. 8282 [Steve Henson] 8283 8284 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use 8285 perror when PEM_read_bio_X509_REQ fails, the error message must 8286 be obtained from the error queue. 8287 [Bodo Moeller] 8288 8289 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing 8290 it in ERR_remove_state if appropriate, and change ERR_get_state 8291 accordingly to avoid race conditions (this is necessary because 8292 thread_hash is no longer constant once set). 8293 [Bodo Moeller] 8294 8295 *) Bugfix for linux-elf makefile.one. 8296 [Ulf M��ller] 8297 8298 *) RSA_get_default_method() will now cause a default 8299 RSA_METHOD to be chosen if one doesn't exist already. 8300 Previously this was only set during a call to RSA_new() 8301 or RSA_new_method(NULL) meaning it was possible for 8302 RSA_get_default_method() to return NULL. 8303 [Geoff Thorpe] 8304 8305 *) Added native name translation to the existing DSO code 8306 that will convert (if the flag to do so is set) filenames 8307 that are sufficiently small and have no path information 8308 into a canonical native form. Eg. "blah" converted to 8309 "libblah.so" or "blah.dll" etc. 8310 [Geoff Thorpe] 8311 8312 *) New function ERR_error_string_n(e, buf, len) which is like 8313 ERR_error_string(e, buf), but writes at most 'len' bytes 8314 including the 0 terminator. For ERR_error_string_n, 'buf' 8315 may not be NULL. 8316 [Damien Miller <djm@mindrot.org>, Bodo Moeller] 8317 8318 *) CONF library reworked to become more general. A new CONF 8319 configuration file reader "class" is implemented as well as a 8320 new functions (NCONF_*, for "New CONF") to handle it. The now 8321 old CONF_* functions are still there, but are reimplemented to 8322 work in terms of the new functions. Also, a set of functions 8323 to handle the internal storage of the configuration data is 8324 provided to make it easier to write new configuration file 8325 reader "classes" (I can definitely see something reading a 8326 configuration file in XML format, for example), called _CONF_*, 8327 or "the configuration storage API"... 8328 8329 The new configuration file reading functions are: 8330 8331 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio, 8332 NCONF_get_section, NCONF_get_string, NCONF_get_numbre 8333 8334 NCONF_default, NCONF_WIN32 8335 8336 NCONF_dump_fp, NCONF_dump_bio 8337 8338 NCONF_default and NCONF_WIN32 are method (or "class") choosers, 8339 NCONF_new creates a new CONF object. This works in the same way 8340 as other interfaces in OpenSSL, like the BIO interface. 8341 NCONF_dump_* dump the internal storage of the configuration file, 8342 which is useful for debugging. All other functions take the same 8343 arguments as the old CONF_* functions wth the exception of the 8344 first that must be a `CONF *' instead of a `LHASH *'. 8345 8346 To make it easer to use the new classes with the old CONF_* functions, 8347 the function CONF_set_default_method is provided. 8348 [Richard Levitte] 8349 8350 *) Add '-tls1' option to 'openssl ciphers', which was already 8351 mentioned in the documentation but had not been implemented. 8352 (This option is not yet really useful because even the additional 8353 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.) 8354 [Bodo Moeller] 8355 8356 *) Initial DSO code added into libcrypto for letting OpenSSL (and 8357 OpenSSL-based applications) load shared libraries and bind to 8358 them in a portable way. 8359 [Geoff Thorpe, with contributions from Richard Levitte] 8360 8361 Changes between 0.9.5 and 0.9.5a [1 Apr 2000] 8362 8363 *) Make sure _lrotl and _lrotr are only used with MSVC. 8364 8365 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status 8366 (the default implementation of RAND_status). 8367 8368 *) Rename openssl x509 option '-crlext', which was added in 0.9.5, 8369 to '-clrext' (= clear extensions), as intended and documented. 8370 [Bodo Moeller; inconsistency pointed out by Michael Attili 8371 <attili@amaxo.com>] 8372 8373 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length 8374 was larger than the MD block size. 8375 [Steve Henson, pointed out by Yost William <YostW@tce.com>] 8376 8377 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument 8378 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set() 8379 using the passed key: if the passed key was a private key the result 8380 of X509_print(), for example, would be to print out all the private key 8381 components. 8382 [Steve Henson] 8383 8384 *) des_quad_cksum() byte order bug fix. 8385 [Ulf M��ller, using the problem description in krb4-0.9.7, where 8386 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>] 8387 8388 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly 8389 discouraged. 8390 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>] 8391 8392 *) For easily testing in shell scripts whether some command 8393 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX' 8394 returns with exit code 0 iff no command of the given name is available. 8395 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases, 8396 the output goes to stdout and nothing is printed to stderr. 8397 Additional arguments are always ignored. 8398 8399 Since for each cipher there is a command of the same name, 8400 the 'no-cipher' compilation switches can be tested this way. 8401 8402 ('openssl no-XXX' is not able to detect pseudo-commands such 8403 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.) 8404 [Bodo Moeller] 8405 8406 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration. 8407 [Bodo Moeller] 8408 8409 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE 8410 is set; it will be thrown away anyway because each handshake creates 8411 its own key. 8412 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition 8413 to parameters -- in previous versions (since OpenSSL 0.9.3) the 8414 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining 8415 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro. 8416 [Bodo Moeller] 8417 8418 *) New s_client option -ign_eof: EOF at stdin is ignored, and 8419 'Q' and 'R' lose their special meanings (quit/renegotiate). 8420 This is part of what -quiet does; unlike -quiet, -ign_eof 8421 does not suppress any output. 8422 [Richard Levitte] 8423 8424 *) Add compatibility options to the purpose and trust code. The 8425 purpose X509_PURPOSE_ANY is "any purpose" which automatically 8426 accepts a certificate or CA, this was the previous behaviour, 8427 with all the associated security issues. 8428 8429 X509_TRUST_COMPAT is the old trust behaviour: only and 8430 automatically trust self signed roots in certificate store. A 8431 new trust setting X509_TRUST_DEFAULT is used to specify that 8432 a purpose has no associated trust setting and it should instead 8433 use the value in the default purpose. 8434 [Steve Henson] 8435 8436 *) Fix the PKCS#8 DSA private key code so it decodes keys again 8437 and fix a memory leak. 8438 [Steve Henson] 8439 8440 *) In util/mkerr.pl (which implements 'make errors'), preserve 8441 reason strings from the previous version of the .c file, as 8442 the default to have only downcase letters (and digits) in 8443 automatically generated reasons codes is not always appropriate. 8444 [Bodo Moeller] 8445 8446 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table 8447 using strerror. Previously, ERR_reason_error_string() returned 8448 library names as reason strings for SYSerr; but SYSerr is a special 8449 case where small numbers are errno values, not library numbers. 8450 [Bodo Moeller] 8451 8452 *) Add '-dsaparam' option to 'openssl dhparam' application. This 8453 converts DSA parameters into DH parameters. (When creating parameters, 8454 DSA_generate_parameters is used.) 8455 [Bodo Moeller] 8456 8457 *) Include 'length' (recommended exponent length) in C code generated 8458 by 'openssl dhparam -C'. 8459 [Bodo Moeller] 8460 8461 *) The second argument to set_label in perlasm was already being used 8462 so couldn't be used as a "file scope" flag. Moved to third argument 8463 which was free. 8464 [Steve Henson] 8465 8466 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes 8467 instead of RAND_bytes for encryption IVs and salts. 8468 [Bodo Moeller] 8469 8470 *) Include RAND_status() into RAND_METHOD instead of implementing 8471 it only for md_rand.c Otherwise replacing the PRNG by calling 8472 RAND_set_rand_method would be impossible. 8473 [Bodo Moeller] 8474 8475 *) Don't let DSA_generate_key() enter an infinite loop if the random 8476 number generation fails. 8477 [Bodo Moeller] 8478 8479 *) New 'rand' application for creating pseudo-random output. 8480 [Bodo Moeller] 8481 8482 *) Added configuration support for Linux/IA64 8483 [Rolf Haberrecker <rolf@suse.de>] 8484 8485 *) Assembler module support for Mingw32. 8486 [Ulf M��ller] 8487 8488 *) Shared library support for HPUX (in shlib/). 8489 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous] 8490 8491 *) Shared library support for Solaris gcc. 8492 [Lutz Behnke <behnke@trustcenter.de>] 8493 8494 Changes between 0.9.4 and 0.9.5 [28 Feb 2000] 8495 8496 *) PKCS7_encrypt() was adding text MIME headers twice because they 8497 were added manually and by SMIME_crlf_copy(). 8498 [Steve Henson] 8499 8500 *) In bntest.c don't call BN_rand with zero bits argument. 8501 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>] 8502 8503 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n] 8504 case was implemented. This caused BN_div_recp() to fail occasionally. 8505 [Ulf M��ller] 8506 8507 *) Add an optional second argument to the set_label() in the perl 8508 assembly language builder. If this argument exists and is set 8509 to 1 it signals that the assembler should use a symbol whose 8510 scope is the entire file, not just the current function. This 8511 is needed with MASM which uses the format label:: for this scope. 8512 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>] 8513 8514 *) Change the ASN1 types so they are typedefs by default. Before 8515 almost all types were #define'd to ASN1_STRING which was causing 8516 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING) 8517 for example. 8518 [Steve Henson] 8519 8520 *) Change names of new functions to the new get1/get0 naming 8521 convention: After 'get1', the caller owns a reference count 8522 and has to call ..._free; 'get0' returns a pointer to some 8523 data structure without incrementing reference counters. 8524 (Some of the existing 'get' functions increment a reference 8525 counter, some don't.) 8526 Similarly, 'set1' and 'add1' functions increase reference 8527 counters or duplicate objects. 8528 [Steve Henson] 8529 8530 *) Allow for the possibility of temp RSA key generation failure: 8531 the code used to assume it always worked and crashed on failure. 8532 [Steve Henson] 8533 8534 *) Fix potential buffer overrun problem in BIO_printf(). 8535 [Ulf M��ller, using public domain code by Patrick Powell; problem 8536 pointed out by David Sacerdote <das33@cornell.edu>] 8537 8538 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions 8539 RAND_egd() and RAND_status(). In the command line application, 8540 the EGD socket can be specified like a seed file using RANDFILE 8541 or -rand. 8542 [Ulf M��ller] 8543 8544 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures. 8545 Some CAs (e.g. Verisign) distribute certificates in this form. 8546 [Steve Henson] 8547 8548 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher 8549 list to exclude them. This means that no special compilation option 8550 is needed to use anonymous DH: it just needs to be included in the 8551 cipher list. 8552 [Steve Henson] 8553 8554 *) Change the EVP_MD_CTX_type macro so its meaning consistent with 8555 EVP_MD_type. The old functionality is available in a new macro called 8556 EVP_MD_md(). Change code that uses it and update docs. 8557 [Steve Henson] 8558 8559 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions 8560 where the 'void *' argument is replaced by a function pointer argument. 8561 Previously 'void *' was abused to point to functions, which works on 8562 many platforms, but is not correct. As these functions are usually 8563 called by macros defined in OpenSSL header files, most source code 8564 should work without changes. 8565 [Richard Levitte] 8566 8567 *) <openssl/opensslconf.h> (which is created by Configure) now contains 8568 sections with information on -D... compiler switches used for 8569 compiling the library so that applications can see them. To enable 8570 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES 8571 must be defined. E.g., 8572 #define OPENSSL_ALGORITHM_DEFINES 8573 #include <openssl/opensslconf.h> 8574 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc. 8575 [Richard Levitte, Ulf and Bodo M��ller] 8576 8577 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS 8578 record layer. 8579 [Bodo Moeller] 8580 8581 *) Change the 'other' type in certificate aux info to a STACK_OF 8582 X509_ALGOR. Although not an AlgorithmIdentifier as such it has 8583 the required ASN1 format: arbitrary types determined by an OID. 8584 [Steve Henson] 8585 8586 *) Add some PEM_write_X509_REQ_NEW() functions and a command line 8587 argument to 'req'. This is not because the function is newer or 8588 better than others it just uses the work 'NEW' in the certificate 8589 request header lines. Some software needs this. 8590 [Steve Henson] 8591 8592 *) Reorganise password command line arguments: now passwords can be 8593 obtained from various sources. Delete the PEM_cb function and make 8594 it the default behaviour: i.e. if the callback is NULL and the 8595 usrdata argument is not NULL interpret it as a null terminated pass 8596 phrase. If usrdata and the callback are NULL then the pass phrase 8597 is prompted for as usual. 8598 [Steve Henson] 8599 8600 *) Add support for the Compaq Atalla crypto accelerator. If it is installed, 8601 the support is automatically enabled. The resulting binaries will 8602 autodetect the card and use it if present. 8603 [Ben Laurie and Compaq Inc.] 8604 8605 *) Work around for Netscape hang bug. This sends certificate request 8606 and server done in one record. Since this is perfectly legal in the 8607 SSL/TLS protocol it isn't a "bug" option and is on by default. See 8608 the bugs/SSLv3 entry for more info. 8609 [Steve Henson] 8610 8611 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround. 8612 [Andy Polyakov] 8613 8614 *) Add -rand argument to smime and pkcs12 applications and read/write 8615 of seed file. 8616 [Steve Henson] 8617 8618 *) New 'passwd' tool for crypt(3) and apr1 password hashes. 8619 [Bodo Moeller] 8620 8621 *) Add command line password options to the remaining applications. 8622 [Steve Henson] 8623 8624 *) Bug fix for BN_div_recp() for numerators with an even number of 8625 bits. 8626 [Ulf M��ller] 8627 8628 *) More tests in bntest.c, and changed test_bn output. 8629 [Ulf M��ller] 8630 8631 *) ./config recognizes MacOS X now. 8632 [Andy Polyakov] 8633 8634 *) Bug fix for BN_div() when the first words of num and divsor are 8635 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0). 8636 [Ulf M��ller] 8637 8638 *) Add support for various broken PKCS#8 formats, and command line 8639 options to produce them. 8640 [Steve Henson] 8641 8642 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to 8643 get temporary BIGNUMs from a BN_CTX. 8644 [Ulf M��ller] 8645 8646 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont() 8647 for p == 0. 8648 [Ulf M��ller] 8649 8650 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and 8651 include a #define from the old name to the new. The original intent 8652 was that statically linked binaries could for example just call 8653 SSLeay_add_all_ciphers() to just add ciphers to the table and not 8654 link with digests. This never worked becayse SSLeay_add_all_digests() 8655 and SSLeay_add_all_ciphers() were in the same source file so calling 8656 one would link with the other. They are now in separate source files. 8657 [Steve Henson] 8658 8659 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'. 8660 [Steve Henson] 8661 8662 *) Use a less unusual form of the Miller-Rabin primality test (it used 8663 a binary algorithm for exponentiation integrated into the Miller-Rabin 8664 loop, our standard modexp algorithms are faster). 8665 [Bodo Moeller] 8666 8667 *) Support for the EBCDIC character set completed. 8668 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>] 8669 8670 *) Source code cleanups: use const where appropriate, eliminate casts, 8671 use void * instead of char * in lhash. 8672 [Ulf M��ller] 8673 8674 *) Bugfix: ssl3_send_server_key_exchange was not restartable 8675 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of 8676 this the server could overwrite ephemeral keys that the client 8677 has already seen). 8678 [Bodo Moeller] 8679 8680 *) Turn DSA_is_prime into a macro that calls BN_is_prime, 8681 using 50 iterations of the Rabin-Miller test. 8682 8683 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50 8684 iterations of the Rabin-Miller test as required by the appendix 8685 to FIPS PUB 186[-1]) instead of DSA_is_prime. 8686 As BN_is_prime_fasttest includes trial division, DSA parameter 8687 generation becomes much faster. 8688 8689 This implies a change for the callback functions in DSA_is_prime 8690 and DSA_generate_parameters: The callback function is called once 8691 for each positive witness in the Rabin-Miller test, not just 8692 occasionally in the inner loop; and the parameters to the 8693 callback function now provide an iteration count for the outer 8694 loop rather than for the current invocation of the inner loop. 8695 DSA_generate_parameters additionally can call the callback 8696 function with an 'iteration count' of -1, meaning that a 8697 candidate has passed the trial division test (when q is generated 8698 from an application-provided seed, trial division is skipped). 8699 [Bodo Moeller] 8700 8701 *) New function BN_is_prime_fasttest that optionally does trial 8702 division before starting the Rabin-Miller test and has 8703 an additional BN_CTX * argument (whereas BN_is_prime always 8704 has to allocate at least one BN_CTX). 8705 'callback(1, -1, cb_arg)' is called when a number has passed the 8706 trial division stage. 8707 [Bodo Moeller] 8708 8709 *) Fix for bug in CRL encoding. The validity dates weren't being handled 8710 as ASN1_TIME. 8711 [Steve Henson] 8712 8713 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file. 8714 [Steve Henson] 8715 8716 *) New function BN_pseudo_rand(). 8717 [Ulf M��ller] 8718 8719 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable) 8720 bignum version of BN_from_montgomery() with the working code from 8721 SSLeay 0.9.0 (the word based version is faster anyway), and clean up 8722 the comments. 8723 [Ulf M��ller] 8724 8725 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that 8726 made it impossible to use the same SSL_SESSION data structure in 8727 SSL2 clients in multiple threads. 8728 [Bodo Moeller] 8729 8730 *) The return value of RAND_load_file() no longer counts bytes obtained 8731 by stat(). RAND_load_file(..., -1) is new and uses the complete file 8732 to seed the PRNG (previously an explicit byte count was required). 8733 [Ulf M��ller, Bodo M��ller] 8734 8735 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes 8736 used (char *) instead of (void *) and had casts all over the place. 8737 [Steve Henson] 8738 8739 *) Make BN_generate_prime() return NULL on error if ret!=NULL. 8740 [Ulf M��ller] 8741 8742 *) Retain source code compatibility for BN_prime_checks macro: 8743 BN_is_prime(..., BN_prime_checks, ...) now uses 8744 BN_prime_checks_for_size to determine the appropriate number of 8745 Rabin-Miller iterations. 8746 [Ulf M��ller] 8747 8748 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to 8749 DH_CHECK_P_NOT_SAFE_PRIME. 8750 (Check if this is true? OpenPGP calls them "strong".) 8751 [Ulf M��ller] 8752 8753 *) Merge the functionality of "dh" and "gendh" programs into a new program 8754 "dhparam". The old programs are retained for now but will handle DH keys 8755 (instead of parameters) in future. 8756 [Steve Henson] 8757 8758 *) Make the ciphers, s_server and s_client programs check the return values 8759 when a new cipher list is set. 8760 [Steve Henson] 8761 8762 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit 8763 ciphers. Before when the 56bit ciphers were enabled the sorting was 8764 wrong. 8765 8766 The syntax for the cipher sorting has been extended to support sorting by 8767 cipher-strength (using the strength_bits hard coded in the tables). 8768 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod). 8769 8770 Fix a bug in the cipher-command parser: when supplying a cipher command 8771 string with an "undefined" symbol (neither command nor alphanumeric 8772 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now 8773 an error is flagged. 8774 8775 Due to the strength-sorting extension, the code of the 8776 ssl_create_cipher_list() function was completely rearranged. I hope that 8777 the readability was also increased :-) 8778 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>] 8779 8780 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1 8781 for the first serial number and places 2 in the serial number file. This 8782 avoids problems when the root CA is created with serial number zero and 8783 the first user certificate has the same issuer name and serial number 8784 as the root CA. 8785 [Steve Henson] 8786 8787 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses 8788 the new code. Add documentation for this stuff. 8789 [Steve Henson] 8790 8791 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from 8792 X509_*() to X509at_*() on the grounds that they don't handle X509 8793 structures and behave in an analagous way to the X509v3 functions: 8794 they shouldn't be called directly but wrapper functions should be used 8795 instead. 8796 8797 So we also now have some wrapper functions that call the X509at functions 8798 when passed certificate requests. (TO DO: similar things can be done with 8799 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other 8800 things. Some of these need some d2i or i2d and print functionality 8801 because they handle more complex structures.) 8802 [Steve Henson] 8803 8804 *) Add missing #ifndefs that caused missing symbols when building libssl 8805 as a shared library without RSA. Use #ifndef NO_SSL2 instead of 8806 NO_RSA in ssl/s2*.c. 8807 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf M��ller] 8808 8809 *) Precautions against using the PRNG uninitialized: RAND_bytes() now 8810 has a return value which indicates the quality of the random data 8811 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's 8812 error queue. New function RAND_pseudo_bytes() generates output that is 8813 guaranteed to be unique but not unpredictable. RAND_add is like 8814 RAND_seed, but takes an extra argument for an entropy estimate 8815 (RAND_seed always assumes full entropy). 8816 [Ulf M��ller] 8817 8818 *) Do more iterations of Rabin-Miller probable prime test (specifically, 8819 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes 8820 instead of only 2 for all lengths; see BN_prime_checks_for_size definition 8821 in crypto/bn/bn_prime.c for the complete table). This guarantees a 8822 false-positive rate of at most 2^-80 for random input. 8823 [Bodo Moeller] 8824 8825 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs. 8826 [Bodo Moeller] 8827 8828 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain 8829 in the 0.9.5 release), this returns the chain 8830 from an X509_CTX structure with a dup of the stack and all 8831 the X509 reference counts upped: so the stack will exist 8832 after X509_CTX_cleanup() has been called. Modify pkcs12.c 8833 to use this. 8834 8835 Also make SSL_SESSION_print() print out the verify return 8836 code. 8837 [Steve Henson] 8838 8839 *) Add manpage for the pkcs12 command. Also change the default 8840 behaviour so MAC iteration counts are used unless the new 8841 -nomaciter option is used. This improves file security and 8842 only older versions of MSIE (4.0 for example) need it. 8843 [Steve Henson] 8844 8845 *) Honor the no-xxx Configure options when creating .DEF files. 8846 [Ulf M��ller] 8847 8848 *) Add PKCS#10 attributes to field table: challengePassword, 8849 unstructuredName and unstructuredAddress. These are taken from 8850 draft PKCS#9 v2.0 but are compatible with v1.2 provided no 8851 international characters are used. 8852 8853 More changes to X509_ATTRIBUTE code: allow the setting of types 8854 based on strings. Remove the 'loc' parameter when adding 8855 attributes because these will be a SET OF encoding which is sorted 8856 in ASN1 order. 8857 [Steve Henson] 8858 8859 *) Initial changes to the 'req' utility to allow request generation 8860 automation. This will allow an application to just generate a template 8861 file containing all the field values and have req construct the 8862 request. 8863 8864 Initial support for X509_ATTRIBUTE handling. Stacks of these are 8865 used all over the place including certificate requests and PKCS#7 8866 structures. They are currently handled manually where necessary with 8867 some primitive wrappers for PKCS#7. The new functions behave in a 8868 manner analogous to the X509 extension functions: they allow 8869 attributes to be looked up by NID and added. 8870 8871 Later something similar to the X509V3 code would be desirable to 8872 automatically handle the encoding, decoding and printing of the 8873 more complex types. The string types like challengePassword can 8874 be handled by the string table functions. 8875 8876 Also modified the multi byte string table handling. Now there is 8877 a 'global mask' which masks out certain types. The table itself 8878 can use the flag STABLE_NO_MASK to ignore the mask setting: this 8879 is useful when for example there is only one permissible type 8880 (as in countryName) and using the mask might result in no valid 8881 types at all. 8882 [Steve Henson] 8883 8884 *) Clean up 'Finished' handling, and add functions SSL_get_finished and 8885 SSL_get_peer_finished to allow applications to obtain the latest 8886 Finished messages sent to the peer or expected from the peer, 8887 respectively. (SSL_get_peer_finished is usually the Finished message 8888 actually received from the peer, otherwise the protocol will be aborted.) 8889 8890 As the Finished message are message digests of the complete handshake 8891 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can 8892 be used for external authentication procedures when the authentication 8893 provided by SSL/TLS is not desired or is not enough. 8894 [Bodo Moeller] 8895 8896 *) Enhanced support for Alpha Linux is added. Now ./config checks if 8897 the host supports BWX extension and if Compaq C is present on the 8898 $PATH. Just exploiting of the BWX extension results in 20-30% 8899 performance kick for some algorithms, e.g. DES and RC4 to mention 8900 a couple. Compaq C in turn generates ~20% faster code for MD5 and 8901 SHA1. 8902 [Andy Polyakov] 8903 8904 *) Add support for MS "fast SGC". This is arguably a violation of the 8905 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with 8906 weak crypto and after checking the certificate is SGC a second one 8907 with strong crypto. MS SGC stops the first handshake after receiving 8908 the server certificate message and sends a second client hello. Since 8909 a server will typically do all the time consuming operations before 8910 expecting any further messages from the client (server key exchange 8911 is the most expensive) there is little difference between the two. 8912 8913 To get OpenSSL to support MS SGC we have to permit a second client 8914 hello message after we have sent server done. In addition we have to 8915 reset the MAC if we do get this second client hello. 8916 [Steve Henson] 8917 8918 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide 8919 if a DER encoded private key is RSA or DSA traditional format. Changed 8920 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional" 8921 format DER encoded private key. Newer code should use PKCS#8 format which 8922 has the key type encoded in the ASN1 structure. Added DER private key 8923 support to pkcs8 application. 8924 [Steve Henson] 8925 8926 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous 8927 ciphersuites has been selected (as required by the SSL 3/TLS 1 8928 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT 8929 is set, we interpret this as a request to violate the specification 8930 (the worst that can happen is a handshake failure, and 'correct' 8931 behaviour would result in a handshake failure anyway). 8932 [Bodo Moeller] 8933 8934 *) In SSL_CTX_add_session, take into account that there might be multiple 8935 SSL_SESSION structures with the same session ID (e.g. when two threads 8936 concurrently obtain them from an external cache). 8937 The internal cache can handle only one SSL_SESSION with a given ID, 8938 so if there's a conflict, we now throw out the old one to achieve 8939 consistency. 8940 [Bodo Moeller] 8941 8942 *) Add OIDs for idea and blowfish in CBC mode. This will allow both 8943 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to 8944 some routines that use cipher OIDs: some ciphers do not have OIDs 8945 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for 8946 example. 8947 [Steve Henson] 8948 8949 *) Simplify the trust setting structure and code. Now we just have 8950 two sequences of OIDs for trusted and rejected settings. These will 8951 typically have values the same as the extended key usage extension 8952 and any application specific purposes. 8953 8954 The trust checking code now has a default behaviour: it will just 8955 check for an object with the same NID as the passed id. Functions can 8956 be provided to override either the default behaviour or the behaviour 8957 for a given id. SSL client, server and email already have functions 8958 in place for compatibility: they check the NID and also return "trusted" 8959 if the certificate is self signed. 8960 [Steve Henson] 8961 8962 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the 8963 traditional format into an EVP_PKEY structure. 8964 [Steve Henson] 8965 8966 *) Add a password callback function PEM_cb() which either prompts for 8967 a password if usr_data is NULL or otherwise assumes it is a null 8968 terminated password. Allow passwords to be passed on command line 8969 environment or config files in a few more utilities. 8970 [Steve Henson] 8971 8972 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private 8973 keys. Add some short names for PKCS#8 PBE algorithms and allow them 8974 to be specified on the command line for the pkcs8 and pkcs12 utilities. 8975 Update documentation. 8976 [Steve Henson] 8977 8978 *) Support for ASN1 "NULL" type. This could be handled before by using 8979 ASN1_TYPE but there wasn't any function that would try to read a NULL 8980 and produce an error if it couldn't. For compatibility we also have 8981 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and 8982 don't allocate anything because they don't need to. 8983 [Steve Henson] 8984 8985 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS 8986 for details. 8987 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>] 8988 8989 *) Rebuild of the memory allocation routines used by OpenSSL code and 8990 possibly others as well. The purpose is to make an interface that 8991 provide hooks so anyone can build a separate set of allocation and 8992 deallocation routines to be used by OpenSSL, for example memory 8993 pool implementations, or something else, which was previously hard 8994 since Malloc(), Realloc() and Free() were defined as macros having 8995 the values malloc, realloc and free, respectively (except for Win32 8996 compilations). The same is provided for memory debugging code. 8997 OpenSSL already comes with functionality to find memory leaks, but 8998 this gives people a chance to debug other memory problems. 8999 9000 With these changes, a new set of functions and macros have appeared: 9001 9002 CRYPTO_set_mem_debug_functions() [F] 9003 CRYPTO_get_mem_debug_functions() [F] 9004 CRYPTO_dbg_set_options() [F] 9005 CRYPTO_dbg_get_options() [F] 9006 CRYPTO_malloc_debug_init() [M] 9007 9008 The memory debug functions are NULL by default, unless the library 9009 is compiled with CRYPTO_MDEBUG or friends is defined. If someone 9010 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which 9011 gives the standard debugging functions that come with OpenSSL) or 9012 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions 9013 provided by the library user) must be used. When the standard 9014 debugging functions are used, CRYPTO_dbg_set_options can be used to 9015 request additional information: 9016 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting 9017 the CRYPTO_MDEBUG_xxx macro when compiling the library. 9018 9019 Also, things like CRYPTO_set_mem_functions will always give the 9020 expected result (the new set of functions is used for allocation 9021 and deallocation) at all times, regardless of platform and compiler 9022 options. 9023 9024 To finish it up, some functions that were never use in any other 9025 way than through macros have a new API and new semantic: 9026 9027 CRYPTO_dbg_malloc() 9028 CRYPTO_dbg_realloc() 9029 CRYPTO_dbg_free() 9030 9031 All macros of value have retained their old syntax. 9032 [Richard Levitte and Bodo Moeller] 9033 9034 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the 9035 ordering of SMIMECapabilities wasn't in "strength order" and there 9036 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature 9037 algorithm. 9038 [Steve Henson] 9039 9040 *) Some ASN1 types with illegal zero length encoding (INTEGER, 9041 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines. 9042 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson] 9043 9044 *) Merge in my S/MIME library for OpenSSL. This provides a simple 9045 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough 9046 functionality to handle multipart/signed properly) and a utility 9047 called 'smime' to call all this stuff. This is based on code I 9048 originally wrote for Celo who have kindly allowed it to be 9049 included in OpenSSL. 9050 [Steve Henson] 9051 9052 *) Add variants des_set_key_checked and des_set_key_unchecked of 9053 des_set_key (aka des_key_sched). Global variable des_check_key 9054 decides which of these is called by des_set_key; this way 9055 des_check_key behaves as it always did, but applications and 9056 the library itself, which was buggy for des_check_key == 1, 9057 have a cleaner way to pick the version they need. 9058 [Bodo Moeller] 9059 9060 *) New function PKCS12_newpass() which changes the password of a 9061 PKCS12 structure. 9062 [Steve Henson] 9063 9064 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and 9065 dynamic mix. In both cases the ids can be used as an index into the 9066 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add() 9067 functions so they accept a list of the field values and the 9068 application doesn't need to directly manipulate the X509_TRUST 9069 structure. 9070 [Steve Henson] 9071 9072 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't 9073 need initialising. 9074 [Steve Henson] 9075 9076 *) Modify the way the V3 extension code looks up extensions. This now 9077 works in a similar way to the object code: we have some "standard" 9078 extensions in a static table which is searched with OBJ_bsearch() 9079 and the application can add dynamic ones if needed. The file 9080 crypto/x509v3/ext_dat.h now has the info: this file needs to be 9081 updated whenever a new extension is added to the core code and kept 9082 in ext_nid order. There is a simple program 'tabtest.c' which checks 9083 this. New extensions are not added too often so this file can readily 9084 be maintained manually. 9085 9086 There are two big advantages in doing things this way. The extensions 9087 can be looked up immediately and no longer need to be "added" using 9088 X509V3_add_standard_extensions(): this function now does nothing. 9089 [Side note: I get *lots* of email saying the extension code doesn't 9090 work because people forget to call this function] 9091 Also no dynamic allocation is done unless new extensions are added: 9092 so if we don't add custom extensions there is no need to call 9093 X509V3_EXT_cleanup(). 9094 [Steve Henson] 9095 9096 *) Modify enc utility's salting as follows: make salting the default. Add a 9097 magic header, so unsalted files fail gracefully instead of just decrypting 9098 to garbage. This is because not salting is a big security hole, so people 9099 should be discouraged from doing it. 9100 [Ben Laurie] 9101 9102 *) Fixes and enhancements to the 'x509' utility. It allowed a message 9103 digest to be passed on the command line but it only used this 9104 parameter when signing a certificate. Modified so all relevant 9105 operations are affected by the digest parameter including the 9106 -fingerprint and -x509toreq options. Also -x509toreq choked if a 9107 DSA key was used because it didn't fix the digest. 9108 [Steve Henson] 9109 9110 *) Initial certificate chain verify code. Currently tests the untrusted 9111 certificates for consistency with the verify purpose (which is set 9112 when the X509_STORE_CTX structure is set up) and checks the pathlength. 9113 9114 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour: 9115 this is because it will reject chains with invalid extensions whereas 9116 every previous version of OpenSSL and SSLeay made no checks at all. 9117 9118 Trust code: checks the root CA for the relevant trust settings. Trust 9119 settings have an initial value consistent with the verify purpose: e.g. 9120 if the verify purpose is for SSL client use it expects the CA to be 9121 trusted for SSL client use. However the default value can be changed to 9122 permit custom trust settings: one example of this would be to only trust 9123 certificates from a specific "secure" set of CAs. 9124 9125 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions 9126 which should be used for version portability: especially since the 9127 verify structure is likely to change more often now. 9128 9129 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions 9130 to set them. If not set then assume SSL clients will verify SSL servers 9131 and vice versa. 9132 9133 Two new options to the verify program: -untrusted allows a set of 9134 untrusted certificates to be passed in and -purpose which sets the 9135 intended purpose of the certificate. If a purpose is set then the 9136 new chain verify code is used to check extension consistency. 9137 [Steve Henson] 9138 9139 *) Support for the authority information access extension. 9140 [Steve Henson] 9141 9142 *) Modify RSA and DSA PEM read routines to transparently handle 9143 PKCS#8 format private keys. New *_PUBKEY_* functions that handle 9144 public keys in a format compatible with certificate 9145 SubjectPublicKeyInfo structures. Unfortunately there were already 9146 functions called *_PublicKey_* which used various odd formats so 9147 these are retained for compatibility: however the DSA variants were 9148 never in a public release so they have been deleted. Changed dsa/rsa 9149 utilities to handle the new format: note no releases ever handled public 9150 keys so we should be OK. 9151 9152 The primary motivation for this change is to avoid the same fiasco 9153 that dogs private keys: there are several incompatible private key 9154 formats some of which are standard and some OpenSSL specific and 9155 require various evil hacks to allow partial transparent handling and 9156 even then it doesn't work with DER formats. Given the option anything 9157 other than PKCS#8 should be dumped: but the other formats have to 9158 stay in the name of compatibility. 9159 9160 With public keys and the benefit of hindsight one standard format 9161 is used which works with EVP_PKEY, RSA or DSA structures: though 9162 it clearly returns an error if you try to read the wrong kind of key. 9163 9164 Added a -pubkey option to the 'x509' utility to output the public key. 9165 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*() 9166 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add 9167 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*()) 9168 that do the same as the EVP_PKEY_assign_*() except they up the 9169 reference count of the added key (they don't "swallow" the 9170 supplied key). 9171 [Steve Henson] 9172 9173 *) Fixes to crypto/x509/by_file.c the code to read in certificates and 9174 CRLs would fail if the file contained no certificates or no CRLs: 9175 added a new function to read in both types and return the number 9176 read: this means that if none are read it will be an error. The 9177 DER versions of the certificate and CRL reader would always fail 9178 because it isn't possible to mix certificates and CRLs in DER format 9179 without choking one or the other routine. Changed this to just read 9180 a certificate: this is the best we can do. Also modified the code 9181 in apps/verify.c to take notice of return codes: it was previously 9182 attempting to read in certificates from NULL pointers and ignoring 9183 any errors: this is one reason why the cert and CRL reader seemed 9184 to work. It doesn't check return codes from the default certificate 9185 routines: these may well fail if the certificates aren't installed. 9186 [Steve Henson] 9187 9188 *) Code to support otherName option in GeneralName. 9189 [Steve Henson] 9190 9191 *) First update to verify code. Change the verify utility 9192 so it warns if it is passed a self signed certificate: 9193 for consistency with the normal behaviour. X509_verify 9194 has been modified to it will now verify a self signed 9195 certificate if *exactly* the same certificate appears 9196 in the store: it was previously impossible to trust a 9197 single self signed certificate. This means that: 9198 openssl verify ss.pem 9199 now gives a warning about a self signed certificate but 9200 openssl verify -CAfile ss.pem ss.pem 9201 is OK. 9202 [Steve Henson] 9203 9204 *) For servers, store verify_result in SSL_SESSION data structure 9205 (and add it to external session representation). 9206 This is needed when client certificate verifications fails, 9207 but an application-provided verification callback (set by 9208 SSL_CTX_set_cert_verify_callback) allows accepting the session 9209 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK 9210 but returns 1): When the session is reused, we have to set 9211 ssl->verify_result to the appropriate error code to avoid 9212 security holes. 9213 [Bodo Moeller, problem pointed out by Lutz Jaenicke] 9214 9215 *) Fix a bug in the new PKCS#7 code: it didn't consider the 9216 case in PKCS7_dataInit() where the signed PKCS7 structure 9217 didn't contain any existing data because it was being created. 9218 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson] 9219 9220 *) Add a salt to the key derivation routines in enc.c. This 9221 forms the first 8 bytes of the encrypted file. Also add a 9222 -S option to allow a salt to be input on the command line. 9223 [Steve Henson] 9224 9225 *) New function X509_cmp(). Oddly enough there wasn't a function 9226 to compare two certificates. We do this by working out the SHA1 9227 hash and comparing that. X509_cmp() will be needed by the trust 9228 code. 9229 [Steve Henson] 9230 9231 *) SSL_get1_session() is like SSL_get_session(), but increments 9232 the reference count in the SSL_SESSION returned. 9233 [Geoff Thorpe <geoff@eu.c2.net>] 9234 9235 *) Fix for 'req': it was adding a null to request attributes. 9236 Also change the X509_LOOKUP and X509_INFO code to handle 9237 certificate auxiliary information. 9238 [Steve Henson] 9239 9240 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document 9241 the 'enc' command. 9242 [Steve Henson] 9243 9244 *) Add the possibility to add extra information to the memory leak 9245 detecting output, to form tracebacks, showing from where each 9246 allocation was originated: CRYPTO_push_info("constant string") adds 9247 the string plus current file name and line number to a per-thread 9248 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info() 9249 is like calling CYRPTO_pop_info() until the stack is empty. 9250 Also updated memory leak detection code to be multi-thread-safe. 9251 [Richard Levitte] 9252 9253 *) Add options -text and -noout to pkcs7 utility and delete the 9254 encryption options which never did anything. Update docs. 9255 [Steve Henson] 9256 9257 *) Add options to some of the utilities to allow the pass phrase 9258 to be included on either the command line (not recommended on 9259 OSes like Unix) or read from the environment. Update the 9260 manpages and fix a few bugs. 9261 [Steve Henson] 9262 9263 *) Add a few manpages for some of the openssl commands. 9264 [Steve Henson] 9265 9266 *) Fix the -revoke option in ca. It was freeing up memory twice, 9267 leaking and not finding already revoked certificates. 9268 [Steve Henson] 9269 9270 *) Extensive changes to support certificate auxiliary information. 9271 This involves the use of X509_CERT_AUX structure and X509_AUX 9272 functions. An X509_AUX function such as PEM_read_X509_AUX() 9273 can still read in a certificate file in the usual way but it 9274 will also read in any additional "auxiliary information". By 9275 doing things this way a fair degree of compatibility can be 9276 retained: existing certificates can have this information added 9277 using the new 'x509' options. 9278 9279 Current auxiliary information includes an "alias" and some trust 9280 settings. The trust settings will ultimately be used in enhanced 9281 certificate chain verification routines: currently a certificate 9282 can only be trusted if it is self signed and then it is trusted 9283 for all purposes. 9284 [Steve Henson] 9285 9286 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD). 9287 The problem was that one of the replacement routines had not been working 9288 since SSLeay releases. For now the offending routine has been replaced 9289 with non-optimised assembler. Even so, this now gives around 95% 9290 performance improvement for 1024 bit RSA signs. 9291 [Mark Cox] 9292 9293 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2 9294 handling. Most clients have the effective key size in bits equal to 9295 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key. 9296 A few however don't do this and instead use the size of the decrypted key 9297 to determine the RC2 key length and the AlgorithmIdentifier to determine 9298 the effective key length. In this case the effective key length can still 9299 be 40 bits but the key length can be 168 bits for example. This is fixed 9300 by manually forcing an RC2 key into the EVP_PKEY structure because the 9301 EVP code can't currently handle unusual RC2 key sizes: it always assumes 9302 the key length and effective key length are equal. 9303 [Steve Henson] 9304 9305 *) Add a bunch of functions that should simplify the creation of 9306 X509_NAME structures. Now you should be able to do: 9307 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0); 9308 and have it automatically work out the correct field type and fill in 9309 the structures. The more adventurous can try: 9310 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0); 9311 and it will (hopefully) work out the correct multibyte encoding. 9312 [Steve Henson] 9313 9314 *) Change the 'req' utility to use the new field handling and multibyte 9315 copy routines. Before the DN field creation was handled in an ad hoc 9316 way in req, ca, and x509 which was rather broken and didn't support 9317 BMPStrings or UTF8Strings. Since some software doesn't implement 9318 BMPStrings or UTF8Strings yet, they can be enabled using the config file 9319 using the dirstring_type option. See the new comment in the default 9320 openssl.cnf for more info. 9321 [Steve Henson] 9322 9323 *) Make crypto/rand/md_rand.c more robust: 9324 - Assure unique random numbers after fork(). 9325 - Make sure that concurrent threads access the global counter and 9326 md serializably so that we never lose entropy in them 9327 or use exactly the same state in multiple threads. 9328 Access to the large state is not always serializable because 9329 the additional locking could be a performance killer, and 9330 md should be large enough anyway. 9331 [Bodo Moeller] 9332 9333 *) New file apps/app_rand.c with commonly needed functionality 9334 for handling the random seed file. 9335 9336 Use the random seed file in some applications that previously did not: 9337 ca, 9338 dsaparam -genkey (which also ignored its '-rand' option), 9339 s_client, 9340 s_server, 9341 x509 (when signing). 9342 Except on systems with /dev/urandom, it is crucial to have a random 9343 seed file at least for key creation, DSA signing, and for DH exchanges; 9344 for RSA signatures we could do without one. 9345 9346 gendh and gendsa (unlike genrsa) used to read only the first byte 9347 of each file listed in the '-rand' option. The function as previously 9348 found in genrsa is now in app_rand.c and is used by all programs 9349 that support '-rand'. 9350 [Bodo Moeller] 9351 9352 *) In RAND_write_file, use mode 0600 for creating files; 9353 don't just chmod when it may be too late. 9354 [Bodo Moeller] 9355 9356 *) Report an error from X509_STORE_load_locations 9357 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed. 9358 [Bill Perry] 9359 9360 *) New function ASN1_mbstring_copy() this copies a string in either 9361 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format 9362 into an ASN1_STRING type. A mask of permissible types is passed 9363 and it chooses the "minimal" type to use or an error if not type 9364 is suitable. 9365 [Steve Henson] 9366 9367 *) Add function equivalents to the various macros in asn1.h. The old 9368 macros are retained with an M_ prefix. Code inside the library can 9369 use the M_ macros. External code (including the openssl utility) 9370 should *NOT* in order to be "shared library friendly". 9371 [Steve Henson] 9372 9373 *) Add various functions that can check a certificate's extensions 9374 to see if it usable for various purposes such as SSL client, 9375 server or S/MIME and CAs of these types. This is currently 9376 VERY EXPERIMENTAL but will ultimately be used for certificate chain 9377 verification. Also added a -purpose flag to x509 utility to 9378 print out all the purposes. 9379 [Steve Henson] 9380 9381 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated 9382 functions. 9383 [Steve Henson] 9384 9385 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search 9386 for, obtain and decode and extension and obtain its critical flag. 9387 This allows all the necessary extension code to be handled in a 9388 single function call. 9389 [Steve Henson] 9390 9391 *) RC4 tune-up featuring 30-40% performance improvement on most RISC 9392 platforms. See crypto/rc4/rc4_enc.c for further details. 9393 [Andy Polyakov] 9394 9395 *) New -noout option to asn1parse. This causes no output to be produced 9396 its main use is when combined with -strparse and -out to extract data 9397 from a file (which may not be in ASN.1 format). 9398 [Steve Henson] 9399 9400 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer 9401 when producing the local key id. 9402 [Richard Levitte <levitte@stacken.kth.se>] 9403 9404 *) New option -dhparam in s_server. This allows a DH parameter file to be 9405 stated explicitly. If it is not stated then it tries the first server 9406 certificate file. The previous behaviour hard coded the filename 9407 "server.pem". 9408 [Steve Henson] 9409 9410 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow 9411 a public key to be input or output. For example: 9412 openssl rsa -in key.pem -pubout -out pubkey.pem 9413 Also added necessary DSA public key functions to handle this. 9414 [Steve Henson] 9415 9416 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained 9417 in the message. This was handled by allowing 9418 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it. 9419 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>] 9420 9421 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null 9422 to the end of the strings whereas this didn't. This would cause problems 9423 if strings read with d2i_ASN1_bytes() were later modified. 9424 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>] 9425 9426 *) Fix for base64 decode bug. When a base64 bio reads only one line of 9427 data and it contains EOF it will end up returning an error. This is 9428 caused by input 46 bytes long. The cause is due to the way base64 9429 BIOs find the start of base64 encoded data. They do this by trying a 9430 trial decode on each line until they find one that works. When they 9431 do a flag is set and it starts again knowing it can pass all the 9432 data directly through the decoder. Unfortunately it doesn't reset 9433 the context it uses. This means that if EOF is reached an attempt 9434 is made to pass two EOFs through the context and this causes the 9435 resulting error. This can also cause other problems as well. As is 9436 usual with these problems it takes *ages* to find and the fix is 9437 trivial: move one line. 9438 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ] 9439 9440 *) Ugly workaround to get s_client and s_server working under Windows. The 9441 old code wouldn't work because it needed to select() on sockets and the 9442 tty (for keypresses and to see if data could be written). Win32 only 9443 supports select() on sockets so we select() with a 1s timeout on the 9444 sockets and then see if any characters are waiting to be read, if none 9445 are present then we retry, we also assume we can always write data to 9446 the tty. This isn't nice because the code then blocks until we've 9447 received a complete line of data and it is effectively polling the 9448 keyboard at 1s intervals: however it's quite a bit better than not 9449 working at all :-) A dedicated Windows application might handle this 9450 with an event loop for example. 9451 [Steve Henson] 9452 9453 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign 9454 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions 9455 will be called when RSA_sign() and RSA_verify() are used. This is useful 9456 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available. 9457 For this to work properly RSA_public_decrypt() and RSA_private_encrypt() 9458 should *not* be used: RSA_sign() and RSA_verify() must be used instead. 9459 This necessitated the support of an extra signature type NID_md5_sha1 9460 for SSL signatures and modifications to the SSL library to use it instead 9461 of calling RSA_public_decrypt() and RSA_private_encrypt(). 9462 [Steve Henson] 9463 9464 *) Add new -verify -CAfile and -CApath options to the crl program, these 9465 will lookup a CRL issuers certificate and verify the signature in a 9466 similar way to the verify program. Tidy up the crl program so it 9467 no longer accesses structures directly. Make the ASN1 CRL parsing a bit 9468 less strict. It will now permit CRL extensions even if it is not 9469 a V2 CRL: this will allow it to tolerate some broken CRLs. 9470 [Steve Henson] 9471 9472 *) Initialize all non-automatic variables each time one of the openssl 9473 sub-programs is started (this is necessary as they may be started 9474 multiple times from the "OpenSSL>" prompt). 9475 [Lennart Bang, Bodo Moeller] 9476 9477 *) Preliminary compilation option RSA_NULL which disables RSA crypto without 9478 removing all other RSA functionality (this is what NO_RSA does). This 9479 is so (for example) those in the US can disable those operations covered 9480 by the RSA patent while allowing storage and parsing of RSA keys and RSA 9481 key generation. 9482 [Steve Henson] 9483 9484 *) Non-copying interface to BIO pairs. 9485 (still largely untested) 9486 [Bodo Moeller] 9487 9488 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive 9489 ASCII string. This was handled independently in various places before. 9490 [Steve Henson] 9491 9492 *) New functions UTF8_getc() and UTF8_putc() that parse and generate 9493 UTF8 strings a character at a time. 9494 [Steve Henson] 9495 9496 *) Use client_version from client hello to select the protocol 9497 (s23_srvr.c) and for RSA client key exchange verification 9498 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications. 9499 [Bodo Moeller] 9500 9501 *) Add various utility functions to handle SPKACs, these were previously 9502 handled by poking round in the structure internals. Added new function 9503 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to 9504 print, verify and generate SPKACs. Based on an original idea from 9505 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified. 9506 [Steve Henson] 9507 9508 *) RIPEMD160 is operational on all platforms and is back in 'make test'. 9509 [Andy Polyakov] 9510 9511 *) Allow the config file extension section to be overwritten on the 9512 command line. Based on an original idea from Massimiliano Pala 9513 <madwolf@comune.modena.it>. The new option is called -extensions 9514 and can be applied to ca, req and x509. Also -reqexts to override 9515 the request extensions in req and -crlexts to override the crl extensions 9516 in ca. 9517 [Steve Henson] 9518 9519 *) Add new feature to the SPKAC handling in ca. Now you can include 9520 the same field multiple times by preceding it by "XXXX." for example: 9521 1.OU="Unit name 1" 9522 2.OU="Unit name 2" 9523 this is the same syntax as used in the req config file. 9524 [Steve Henson] 9525 9526 *) Allow certificate extensions to be added to certificate requests. These 9527 are specified in a 'req_extensions' option of the req section of the 9528 config file. They can be printed out with the -text option to req but 9529 are otherwise ignored at present. 9530 [Steve Henson] 9531 9532 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first 9533 data read consists of only the final block it would not decrypted because 9534 EVP_CipherUpdate() would correctly report zero bytes had been decrypted. 9535 A misplaced 'break' also meant the decrypted final block might not be 9536 copied until the next read. 9537 [Steve Henson] 9538 9539 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added 9540 a few extra parameters to the DH structure: these will be useful if 9541 for example we want the value of 'q' or implement X9.42 DH. 9542 [Steve Henson] 9543 9544 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and 9545 provides hooks that allow the default DSA functions or functions on a 9546 "per key" basis to be replaced. This allows hardware acceleration and 9547 hardware key storage to be handled without major modification to the 9548 library. Also added low level modexp hooks and CRYPTO_EX structure and 9549 associated functions. 9550 [Steve Henson] 9551 9552 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO 9553 as "read only": it can't be written to and the buffer it points to will 9554 not be freed. Reading from a read only BIO is much more efficient than 9555 a normal memory BIO. This was added because there are several times when 9556 an area of memory needs to be read from a BIO. The previous method was 9557 to create a memory BIO and write the data to it, this results in two 9558 copies of the data and an O(n^2) reading algorithm. There is a new 9559 function BIO_new_mem_buf() which creates a read only memory BIO from 9560 an area of memory. Also modified the PKCS#7 routines to use read only 9561 memory BIOs. 9562 [Steve Henson] 9563 9564 *) Bugfix: ssl23_get_client_hello did not work properly when called in 9565 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of 9566 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read, 9567 but a retry condition occured while trying to read the rest. 9568 [Bodo Moeller] 9569 9570 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as 9571 NID_pkcs7_encrypted by default: this was wrong since this should almost 9572 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle 9573 the encrypted data type: this is a more sensible place to put it and it 9574 allows the PKCS#12 code to be tidied up that duplicated this 9575 functionality. 9576 [Steve Henson] 9577 9578 *) Changed obj_dat.pl script so it takes its input and output files on 9579 the command line. This should avoid shell escape redirection problems 9580 under Win32. 9581 [Steve Henson] 9582 9583 *) Initial support for certificate extension requests, these are included 9584 in things like Xenroll certificate requests. Included functions to allow 9585 extensions to be obtained and added. 9586 [Steve Henson] 9587 9588 *) -crlf option to s_client and s_server for sending newlines as 9589 CRLF (as required by many protocols). 9590 [Bodo Moeller] 9591 9592 Changes between 0.9.3a and 0.9.4 [09 Aug 1999] 9593 9594 *) Install libRSAglue.a when OpenSSL is built with RSAref. 9595 [Ralf S. Engelschall] 9596 9597 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency. 9598 [Andrija Antonijevic <TheAntony2@bigfoot.com>] 9599 9600 *) Fix -startdate and -enddate (which was missing) arguments to 'ca' 9601 program. 9602 [Steve Henson] 9603 9604 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as 9605 DH parameters/keys (q is lost during that conversion, but the resulting 9606 DH parameters contain its length). 9607 9608 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is 9609 much faster than DH_generate_parameters (which creates parameters 9610 where p = 2*q + 1), and also the smaller q makes DH computations 9611 much more efficient (160-bit exponentiation instead of 1024-bit 9612 exponentiation); so this provides a convenient way to support DHE 9613 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of 9614 utter importance to use 9615 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE); 9616 or 9617 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE); 9618 when such DH parameters are used, because otherwise small subgroup 9619 attacks may become possible! 9620 [Bodo Moeller] 9621 9622 *) Avoid memory leak in i2d_DHparams. 9623 [Bodo Moeller] 9624 9625 *) Allow the -k option to be used more than once in the enc program: 9626 this allows the same encrypted message to be read by multiple recipients. 9627 [Steve Henson] 9628 9629 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts 9630 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then 9631 it will always use the numerical form of the OID, even if it has a short 9632 or long name. 9633 [Steve Henson] 9634 9635 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp 9636 method only got called if p,q,dmp1,dmq1,iqmp components were present, 9637 otherwise bn_mod_exp was called. In the case of hardware keys for example 9638 no private key components need be present and it might store extra data 9639 in the RSA structure, which cannot be accessed from bn_mod_exp. 9640 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for 9641 private key operations. 9642 [Steve Henson] 9643 9644 *) Added support for SPARC Linux. 9645 [Andy Polyakov] 9646 9647 *) pem_password_cb function type incompatibly changed from 9648 typedef int pem_password_cb(char *buf, int size, int rwflag); 9649 to 9650 ....(char *buf, int size, int rwflag, void *userdata); 9651 so that applications can pass data to their callbacks: 9652 The PEM[_ASN1]_{read,write}... functions and macros now take an 9653 additional void * argument, which is just handed through whenever 9654 the password callback is called. 9655 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller] 9656 9657 New function SSL_CTX_set_default_passwd_cb_userdata. 9658 9659 Compatibility note: As many C implementations push function arguments 9660 onto the stack in reverse order, the new library version is likely to 9661 interoperate with programs that have been compiled with the old 9662 pem_password_cb definition (PEM_whatever takes some data that 9663 happens to be on the stack as its last argument, and the callback 9664 just ignores this garbage); but there is no guarantee whatsoever that 9665 this will work. 9666 9667 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=... 9668 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused 9669 problems not only on Windows, but also on some Unix platforms. 9670 To avoid problematic command lines, these definitions are now in an 9671 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl 9672 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds). 9673 [Bodo Moeller] 9674 9675 *) MIPS III/IV assembler module is reimplemented. 9676 [Andy Polyakov] 9677 9678 *) More DES library cleanups: remove references to srand/rand and 9679 delete an unused file. 9680 [Ulf M��ller] 9681 9682 *) Add support for the the free Netwide assembler (NASM) under Win32, 9683 since not many people have MASM (ml) and it can be hard to obtain. 9684 This is currently experimental but it seems to work OK and pass all 9685 the tests. Check out INSTALL.W32 for info. 9686 [Steve Henson] 9687 9688 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections 9689 without temporary keys kept an extra copy of the server key, 9690 and connections with temporary keys did not free everything in case 9691 of an error. 9692 [Bodo Moeller] 9693 9694 *) New function RSA_check_key and new openssl rsa option -check 9695 for verifying the consistency of RSA keys. 9696 [Ulf Moeller, Bodo Moeller] 9697 9698 *) Various changes to make Win32 compile work: 9699 1. Casts to avoid "loss of data" warnings in p5_crpt2.c 9700 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned 9701 comparison" warnings. 9702 3. Add sk_<TYPE>_sort to DEF file generator and do make update. 9703 [Steve Henson] 9704 9705 *) Add a debugging option to PKCS#5 v2 key generation function: when 9706 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and 9707 derived keys are printed to stderr. 9708 [Steve Henson] 9709 9710 *) Copy the flags in ASN1_STRING_dup(). 9711 [Roman E. Pavlov <pre@mo.msk.ru>] 9712 9713 *) The x509 application mishandled signing requests containing DSA 9714 keys when the signing key was also DSA and the parameters didn't match. 9715 9716 It was supposed to omit the parameters when they matched the signing key: 9717 the verifying software was then supposed to automatically use the CA's 9718 parameters if they were absent from the end user certificate. 9719 9720 Omitting parameters is no longer recommended. The test was also 9721 the wrong way round! This was probably due to unusual behaviour in 9722 EVP_cmp_parameters() which returns 1 if the parameters match. 9723 This meant that parameters were omitted when they *didn't* match and 9724 the certificate was useless. Certificates signed with 'ca' didn't have 9725 this bug. 9726 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>] 9727 9728 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems. 9729 The interface is as follows: 9730 Applications can use 9731 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(), 9732 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop(); 9733 "off" is now the default. 9734 The library internally uses 9735 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(), 9736 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on() 9737 to disable memory-checking temporarily. 9738 9739 Some inconsistent states that previously were possible (and were 9740 even the default) are now avoided. 9741 9742 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time 9743 with each memory chunk allocated; this is occasionally more helpful 9744 than just having a counter. 9745 9746 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID. 9747 9748 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future 9749 extensions. 9750 [Bodo Moeller] 9751 9752 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX), 9753 which largely parallels "options", but is for changing API behaviour, 9754 whereas "options" are about protocol behaviour. 9755 Initial "mode" flags are: 9756 9757 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when 9758 a single record has been written. 9759 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write 9760 retries use the same buffer location. 9761 (But all of the contents must be 9762 copied!) 9763 [Bodo Moeller] 9764 9765 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options 9766 worked. 9767 9768 *) Fix problems with no-hmac etc. 9769 [Ulf M��ller, pointed out by Brian Wellington <bwelling@tislabs.com>] 9770 9771 *) New functions RSA_get_default_method(), RSA_set_method() and 9772 RSA_get_method(). These allows replacement of RSA_METHODs without having 9773 to mess around with the internals of an RSA structure. 9774 [Steve Henson] 9775 9776 *) Fix memory leaks in DSA_do_sign and DSA_is_prime. 9777 Also really enable memory leak checks in openssl.c and in some 9778 test programs. 9779 [Chad C. Mulligan, Bodo Moeller] 9780 9781 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess 9782 up the length of negative integers. This has now been simplified to just 9783 store the length when it is first determined and use it later, rather 9784 than trying to keep track of where data is copied and updating it to 9785 point to the end. 9786 [Steve Henson, reported by Brien Wheeler 9787 <bwheeler@authentica-security.com>] 9788 9789 *) Add a new function PKCS7_signatureVerify. This allows the verification 9790 of a PKCS#7 signature but with the signing certificate passed to the 9791 function itself. This contrasts with PKCS7_dataVerify which assumes the 9792 certificate is present in the PKCS#7 structure. This isn't always the 9793 case: certificates can be omitted from a PKCS#7 structure and be 9794 distributed by "out of band" means (such as a certificate database). 9795 [Steve Henson] 9796 9797 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the 9798 function prototypes in pem.h, also change util/mkdef.pl to add the 9799 necessary function names. 9800 [Steve Henson] 9801 9802 *) mk1mf.pl (used by Windows builds) did not properly read the 9803 options set by Configure in the top level Makefile, and Configure 9804 was not even able to write more than one option correctly. 9805 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended. 9806 [Bodo Moeller] 9807 9808 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config 9809 file to be loaded from a BIO or FILE pointer. The BIO version will 9810 for example allow memory BIOs to contain config info. 9811 [Steve Henson] 9812 9813 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS. 9814 Whoever hopes to achieve shared-library compatibility across versions 9815 must use this, not the compile-time macro. 9816 (Exercise 0.9.4: Which is the minimum library version required by 9817 such programs?) 9818 Note: All this applies only to multi-threaded programs, others don't 9819 need locks. 9820 [Bodo Moeller] 9821 9822 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests 9823 through a BIO pair triggered the default case, i.e. 9824 SSLerr(...,SSL_R_UNKNOWN_STATE). 9825 [Bodo Moeller] 9826 9827 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications 9828 can use the SSL library even if none of the specific BIOs is 9829 appropriate. 9830 [Bodo Moeller] 9831 9832 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value 9833 for the encoded length. 9834 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>] 9835 9836 *) Add initial documentation of the X509V3 functions. 9837 [Steve Henson] 9838 9839 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and 9840 PEM_write_bio_PKCS8PrivateKey() that are equivalent to 9841 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more 9842 secure PKCS#8 private key format with a high iteration count. 9843 [Steve Henson] 9844 9845 *) Fix determination of Perl interpreter: A perl or perl5 9846 _directory_ in $PATH was also accepted as the interpreter. 9847 [Ralf S. Engelschall] 9848 9849 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking 9850 wrong with it but it was very old and did things like calling 9851 PEM_ASN1_read() directly and used MD5 for the hash not to mention some 9852 unusual formatting. 9853 [Steve Henson] 9854 9855 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed 9856 to use the new extension code. 9857 [Steve Henson] 9858 9859 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c 9860 with macros. This should make it easier to change their form, add extra 9861 arguments etc. Fix a few PEM prototypes which didn't have cipher as a 9862 constant. 9863 [Steve Henson] 9864 9865 *) Add to configuration table a new entry that can specify an alternative 9866 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep, 9867 according to Mark Crispin <MRC@Panda.COM>. 9868 [Bodo Moeller] 9869 9870#if 0 9871 *) DES CBC did not update the IV. Weird. 9872 [Ben Laurie] 9873#else 9874 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does. 9875 Changing the behaviour of the former might break existing programs -- 9876 where IV updating is needed, des_ncbc_encrypt can be used. 9877#endif 9878 9879 *) When bntest is run from "make test" it drives bc to check its 9880 calculations, as well as internally checking them. If an internal check 9881 fails, it needs to cause bc to give a non-zero result or make test carries 9882 on without noticing the failure. Fixed. 9883 [Ben Laurie] 9884 9885 *) DES library cleanups. 9886 [Ulf M��ller] 9887 9888 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be 9889 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit 9890 ciphers. NOTE: although the key derivation function has been verified 9891 against some published test vectors it has not been extensively tested 9892 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use 9893 of v2.0. 9894 [Steve Henson] 9895 9896 *) Instead of "mkdir -p", which is not fully portable, use new 9897 Perl script "util/mkdir-p.pl". 9898 [Bodo Moeller] 9899 9900 *) Rewrite the way password based encryption (PBE) is handled. It used to 9901 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter 9902 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms 9903 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now 9904 the 'parameter' field of the AlgorithmIdentifier is passed to the 9905 underlying key generation function so it must do its own ASN1 parsing. 9906 This has also changed the EVP_PBE_CipherInit() function which now has a 9907 'parameter' argument instead of literal salt and iteration count values 9908 and the function EVP_PBE_ALGOR_CipherInit() has been deleted. 9909 [Steve Henson] 9910 9911 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms 9912 and PKCS#8 functionality. New 'pkcs8' application linked to openssl. 9913 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE 9914 KEY" because this clashed with PKCS#8 unencrypted string. Since this 9915 value was just used as a "magic string" and not used directly its 9916 value doesn't matter. 9917 [Steve Henson] 9918 9919 *) Introduce some semblance of const correctness to BN. Shame C doesn't 9920 support mutable. 9921 [Ben Laurie] 9922 9923 *) "linux-sparc64" configuration (ultrapenguin). 9924 [Ray Miller <ray.miller@oucs.ox.ac.uk>] 9925 "linux-sparc" configuration. 9926 [Christian Forster <fo@hawo.stw.uni-erlangen.de>] 9927 9928 *) config now generates no-xxx options for missing ciphers. 9929 [Ulf M��ller] 9930 9931 *) Support the EBCDIC character set (work in progress). 9932 File ebcdic.c not yet included because it has a different license. 9933 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 9934 9935 *) Support BS2000/OSD-POSIX. 9936 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 9937 9938 *) Make callbacks for key generation use void * instead of char *. 9939 [Ben Laurie] 9940 9941 *) Make S/MIME samples compile (not yet tested). 9942 [Ben Laurie] 9943 9944 *) Additional typesafe stacks. 9945 [Ben Laurie] 9946 9947 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x). 9948 [Bodo Moeller] 9949 9950 9951 Changes between 0.9.3 and 0.9.3a [29 May 1999] 9952 9953 *) New configuration variant "sco5-gcc". 9954 9955 *) Updated some demos. 9956 [Sean O Riordain, Wade Scholine] 9957 9958 *) Add missing BIO_free at exit of pkcs12 application. 9959 [Wu Zhigang] 9960 9961 *) Fix memory leak in conf.c. 9962 [Steve Henson] 9963 9964 *) Updates for Win32 to assembler version of MD5. 9965 [Steve Henson] 9966 9967 *) Set #! path to perl in apps/der_chop to where we found it 9968 instead of using a fixed path. 9969 [Bodo Moeller] 9970 9971 *) SHA library changes for irix64-mips4-cc. 9972 [Andy Polyakov] 9973 9974 *) Improvements for VMS support. 9975 [Richard Levitte] 9976 9977 9978 Changes between 0.9.2b and 0.9.3 [24 May 1999] 9979 9980 *) Bignum library bug fix. IRIX 6 passes "make test" now! 9981 This also avoids the problems with SC4.2 and unpatched SC5. 9982 [Andy Polyakov <appro@fy.chalmers.se>] 9983 9984 *) New functions sk_num, sk_value and sk_set to replace the previous macros. 9985 These are required because of the typesafe stack would otherwise break 9986 existing code. If old code used a structure member which used to be STACK 9987 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with 9988 sk_num or sk_value it would produce an error because the num, data members 9989 are not present in STACK_OF. Now it just produces a warning. sk_set 9990 replaces the old method of assigning a value to sk_value 9991 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code 9992 that does this will no longer work (and should use sk_set instead) but 9993 this could be regarded as a "questionable" behaviour anyway. 9994 [Steve Henson] 9995 9996 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now 9997 correctly handle encrypted S/MIME data. 9998 [Steve Henson] 9999 10000 *) Change type of various DES function arguments from des_cblock 10001 (which means, in function argument declarations, pointer to char) 10002 to des_cblock * (meaning pointer to array with 8 char elements), 10003 which allows the compiler to do more typechecking; it was like 10004 that back in SSLeay, but with lots of ugly casts. 10005 10006 Introduce new type const_des_cblock. 10007 [Bodo Moeller] 10008 10009 *) Reorganise the PKCS#7 library and get rid of some of the more obvious 10010 problems: find RecipientInfo structure that matches recipient certificate 10011 and initialise the ASN1 structures properly based on passed cipher. 10012 [Steve Henson] 10013 10014 *) Belatedly make the BN tests actually check the results. 10015 [Ben Laurie] 10016 10017 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion 10018 to and from BNs: it was completely broken. New compilation option 10019 NEG_PUBKEY_BUG to allow for some broken certificates that encode public 10020 key elements as negative integers. 10021 [Steve Henson] 10022 10023 *) Reorganize and speed up MD5. 10024 [Andy Polyakov <appro@fy.chalmers.se>] 10025 10026 *) VMS support. 10027 [Richard Levitte <richard@levitte.org>] 10028 10029 *) New option -out to asn1parse to allow the parsed structure to be 10030 output to a file. This is most useful when combined with the -strparse 10031 option to examine the output of things like OCTET STRINGS. 10032 [Steve Henson] 10033 10034 *) Make SSL library a little more fool-proof by not requiring any longer 10035 that SSL_set_{accept,connect}_state be called before 10036 SSL_{accept,connect} may be used (SSL_set_..._state is omitted 10037 in many applications because usually everything *appeared* to work as 10038 intended anyway -- now it really works as intended). 10039 [Bodo Moeller] 10040 10041 *) Move openssl.cnf out of lib/. 10042 [Ulf M��ller] 10043 10044 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall 10045 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes 10046 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+ 10047 [Ralf S. Engelschall] 10048 10049 *) Various fixes to the EVP and PKCS#7 code. It may now be able to 10050 handle PKCS#7 enveloped data properly. 10051 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve] 10052 10053 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of 10054 copying pointers. The cert_st handling is changed by this in 10055 various ways (and thus what used to be known as ctx->default_cert 10056 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert 10057 any longer when s->cert does not give us what we need). 10058 ssl_cert_instantiate becomes obsolete by this change. 10059 As soon as we've got the new code right (possibly it already is?), 10060 we have solved a couple of bugs of the earlier code where s->cert 10061 was used as if it could not have been shared with other SSL structures. 10062 10063 Note that using the SSL API in certain dirty ways now will result 10064 in different behaviour than observed with earlier library versions: 10065 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx) 10066 does not influence s as it used to. 10067 10068 In order to clean up things more thoroughly, inside SSL_SESSION 10069 we don't use CERT any longer, but a new structure SESS_CERT 10070 that holds per-session data (if available); currently, this is 10071 the peer's certificate chain and, for clients, the server's certificate 10072 and temporary key. CERT holds only those values that can have 10073 meaningful defaults in an SSL_CTX. 10074 [Bodo Moeller] 10075 10076 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure 10077 from the internal representation. Various PKCS#7 fixes: remove some 10078 evil casts and set the enc_dig_alg field properly based on the signing 10079 key type. 10080 [Steve Henson] 10081 10082 *) Allow PKCS#12 password to be set from the command line or the 10083 environment. Let 'ca' get its config file name from the environment 10084 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req' 10085 and 'x509'). 10086 [Steve Henson] 10087 10088 *) Allow certificate policies extension to use an IA5STRING for the 10089 organization field. This is contrary to the PKIX definition but 10090 VeriSign uses it and IE5 only recognises this form. Document 'x509' 10091 extension option. 10092 [Steve Henson] 10093 10094 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic, 10095 without disallowing inline assembler and the like for non-pedantic builds. 10096 [Ben Laurie] 10097 10098 *) Support Borland C++ builder. 10099 [Janez Jere <jj@void.si>, modified by Ulf M��ller] 10100 10101 *) Support Mingw32. 10102 [Ulf M��ller] 10103 10104 *) SHA-1 cleanups and performance enhancements. 10105 [Andy Polyakov <appro@fy.chalmers.se>] 10106 10107 *) Sparc v8plus assembler for the bignum library. 10108 [Andy Polyakov <appro@fy.chalmers.se>] 10109 10110 *) Accept any -xxx and +xxx compiler options in Configure. 10111 [Ulf M��ller] 10112 10113 *) Update HPUX configuration. 10114 [Anonymous] 10115 10116 *) Add missing sk_<type>_unshift() function to safestack.h 10117 [Ralf S. Engelschall] 10118 10119 *) New function SSL_CTX_use_certificate_chain_file that sets the 10120 "extra_cert"s in addition to the certificate. (This makes sense 10121 only for "PEM" format files, as chains as a whole are not 10122 DER-encoded.) 10123 [Bodo Moeller] 10124 10125 *) Support verify_depth from the SSL API. 10126 x509_vfy.c had what can be considered an off-by-one-error: 10127 Its depth (which was not part of the external interface) 10128 was actually counting the number of certificates in a chain; 10129 now it really counts the depth. 10130 [Bodo Moeller] 10131 10132 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used 10133 instead of X509err, which often resulted in confusing error 10134 messages since the error codes are not globally unique 10135 (e.g. an alleged error in ssl3_accept when a certificate 10136 didn't match the private key). 10137 10138 *) New function SSL_CTX_set_session_id_context that allows to set a default 10139 value (so that you don't need SSL_set_session_id_context for each 10140 connection using the SSL_CTX). 10141 [Bodo Moeller] 10142 10143 *) OAEP decoding bug fix. 10144 [Ulf M��ller] 10145 10146 *) Support INSTALL_PREFIX for package builders, as proposed by 10147 David Harris. 10148 [Bodo Moeller] 10149 10150 *) New Configure options "threads" and "no-threads". For systems 10151 where the proper compiler options are known (currently Solaris 10152 and Linux), "threads" is the default. 10153 [Bodo Moeller] 10154 10155 *) New script util/mklink.pl as a faster substitute for util/mklink.sh. 10156 [Bodo Moeller] 10157 10158 *) Install various scripts to $(OPENSSLDIR)/misc, not to 10159 $(INSTALLTOP)/bin -- they shouldn't clutter directories 10160 such as /usr/local/bin. 10161 [Bodo Moeller] 10162 10163 *) "make linux-shared" to build shared libraries. 10164 [Niels Poppe <niels@netbox.org>] 10165 10166 *) New Configure option no-<cipher> (rsa, idea, rc5, ...). 10167 [Ulf M��ller] 10168 10169 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for 10170 extension adding in x509 utility. 10171 [Steve Henson] 10172 10173 *) Remove NOPROTO sections and error code comments. 10174 [Ulf M��ller] 10175 10176 *) Partial rewrite of the DEF file generator to now parse the ANSI 10177 prototypes. 10178 [Steve Henson] 10179 10180 *) New Configure options --prefix=DIR and --openssldir=DIR. 10181 [Ulf M��ller] 10182 10183 *) Complete rewrite of the error code script(s). It is all now handled 10184 by one script at the top level which handles error code gathering, 10185 header rewriting and C source file generation. It should be much better 10186 than the old method: it now uses a modified version of Ulf's parser to 10187 read the ANSI prototypes in all header files (thus the old K&R definitions 10188 aren't needed for error creation any more) and do a better job of 10189 translating function codes into names. The old 'ASN1 error code imbedded 10190 in a comment' is no longer necessary and it doesn't use .err files which 10191 have now been deleted. Also the error code call doesn't have to appear all 10192 on one line (which resulted in some large lines...). 10193 [Steve Henson] 10194 10195 *) Change #include filenames from <foo.h> to <openssl/foo.h>. 10196 [Bodo Moeller] 10197 10198 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return 10199 0 (which usually indicates a closed connection), but continue reading. 10200 [Bodo Moeller] 10201 10202 *) Fix some race conditions. 10203 [Bodo Moeller] 10204 10205 *) Add support for CRL distribution points extension. Add Certificate 10206 Policies and CRL distribution points documentation. 10207 [Steve Henson] 10208 10209 *) Move the autogenerated header file parts to crypto/opensslconf.h. 10210 [Ulf M��ller] 10211 10212 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of 10213 8 of keying material. Merlin has also confirmed interop with this fix 10214 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0. 10215 [Merlin Hughes <merlin@baltimore.ie>] 10216 10217 *) Fix lots of warnings. 10218 [Richard Levitte <levitte@stacken.kth.se>] 10219 10220 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if 10221 the directory spec didn't end with a LIST_SEPARATOR_CHAR. 10222 [Richard Levitte <levitte@stacken.kth.se>] 10223 10224 *) Fix problems with sizeof(long) == 8. 10225 [Andy Polyakov <appro@fy.chalmers.se>] 10226 10227 *) Change functions to ANSI C. 10228 [Ulf M��ller] 10229 10230 *) Fix typos in error codes. 10231 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf M��ller] 10232 10233 *) Remove defunct assembler files from Configure. 10234 [Ulf M��ller] 10235 10236 *) SPARC v8 assembler BIGNUM implementation. 10237 [Andy Polyakov <appro@fy.chalmers.se>] 10238 10239 *) Support for Certificate Policies extension: both print and set. 10240 Various additions to support the r2i method this uses. 10241 [Steve Henson] 10242 10243 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could 10244 return a const string when you are expecting an allocated buffer. 10245 [Ben Laurie] 10246 10247 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE 10248 types DirectoryString and DisplayText. 10249 [Steve Henson] 10250 10251 *) Add code to allow r2i extensions to access the configuration database, 10252 add an LHASH database driver and add several ctx helper functions. 10253 [Steve Henson] 10254 10255 *) Fix an evil bug in bn_expand2() which caused various BN functions to 10256 fail when they extended the size of a BIGNUM. 10257 [Steve Henson] 10258 10259 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to 10260 support typesafe stack. 10261 [Steve Henson] 10262 10263 *) Fix typo in SSL_[gs]et_options(). 10264 [Nils Frostberg <nils@medcom.se>] 10265 10266 *) Delete various functions and files that belonged to the (now obsolete) 10267 old X509V3 handling code. 10268 [Steve Henson] 10269 10270 *) New Configure option "rsaref". 10271 [Ulf M��ller] 10272 10273 *) Don't auto-generate pem.h. 10274 [Bodo Moeller] 10275 10276 *) Introduce type-safe ASN.1 SETs. 10277 [Ben Laurie] 10278 10279 *) Convert various additional casted stacks to type-safe STACK_OF() variants. 10280 [Ben Laurie, Ralf S. Engelschall, Steve Henson] 10281 10282 *) Introduce type-safe STACKs. This will almost certainly break lots of code 10283 that links with OpenSSL (well at least cause lots of warnings), but fear 10284 not: the conversion is trivial, and it eliminates loads of evil casts. A 10285 few STACKed things have been converted already. Feel free to convert more. 10286 In the fullness of time, I'll do away with the STACK type altogether. 10287 [Ben Laurie] 10288 10289 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate 10290 specified in <certfile> by updating the entry in the index.txt file. 10291 This way one no longer has to edit the index.txt file manually for 10292 revoking a certificate. The -revoke option does the gory details now. 10293 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall] 10294 10295 *) Fix `openssl crl -noout -text' combination where `-noout' killed the 10296 `-text' option at all and this way the `-noout -text' combination was 10297 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'. 10298 [Ralf S. Engelschall] 10299 10300 *) Make sure a corresponding plain text error message exists for the 10301 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a 10302 verify callback function determined that a certificate was revoked. 10303 [Ralf S. Engelschall] 10304 10305 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for 10306 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test 10307 all available cipers including rc5, which was forgotten until now. 10308 In order to let the testing shell script know which algorithms 10309 are available, a new (up to now undocumented) command 10310 "openssl list-cipher-commands" is used. 10311 [Bodo Moeller] 10312 10313 *) Bugfix: s_client occasionally would sleep in select() when 10314 it should have checked SSL_pending() first. 10315 [Bodo Moeller] 10316 10317 *) New functions DSA_do_sign and DSA_do_verify to provide access to 10318 the raw DSA values prior to ASN.1 encoding. 10319 [Ulf M��ller] 10320 10321 *) Tweaks to Configure 10322 [Niels Poppe <niels@netbox.org>] 10323 10324 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support, 10325 yet... 10326 [Steve Henson] 10327 10328 *) New variables $(RANLIB) and $(PERL) in the Makefiles. 10329 [Ulf M��ller] 10330 10331 *) New config option to avoid instructions that are illegal on the 80386. 10332 The default code is faster, but requires at least a 486. 10333 [Ulf M��ller] 10334 10335 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and 10336 SSL2_SERVER_VERSION (not used at all) macros, which are now the 10337 same as SSL2_VERSION anyway. 10338 [Bodo Moeller] 10339 10340 *) New "-showcerts" option for s_client. 10341 [Bodo Moeller] 10342 10343 *) Still more PKCS#12 integration. Add pkcs12 application to openssl 10344 application. Various cleanups and fixes. 10345 [Steve Henson] 10346 10347 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and 10348 modify error routines to work internally. Add error codes and PBE init 10349 to library startup routines. 10350 [Steve Henson] 10351 10352 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and 10353 packing functions to asn1 and evp. Changed function names and error 10354 codes along the way. 10355 [Steve Henson] 10356 10357 *) PKCS12 integration: and so it begins... First of several patches to 10358 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12 10359 objects to objects.h 10360 [Steve Henson] 10361 10362 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1 10363 and display support for Thawte strong extranet extension. 10364 [Steve Henson] 10365 10366 *) Add LinuxPPC support. 10367 [Jeff Dubrule <igor@pobox.org>] 10368 10369 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to 10370 bn_div_words in alpha.s. 10371 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie] 10372 10373 *) Make sure the RSA OAEP test is skipped under -DRSAref because 10374 OAEP isn't supported when OpenSSL is built with RSAref. 10375 [Ulf Moeller <ulf@fitug.de>] 10376 10377 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h 10378 so they no longer are missing under -DNOPROTO. 10379 [Soren S. Jorvang <soren@t.dk>] 10380 10381 10382 Changes between 0.9.1c and 0.9.2b [22 Mar 1999] 10383 10384 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still 10385 doesn't work when the session is reused. Coming soon! 10386 [Ben Laurie] 10387 10388 *) Fix a security hole, that allows sessions to be reused in the wrong 10389 context thus bypassing client cert protection! All software that uses 10390 client certs and session caches in multiple contexts NEEDS PATCHING to 10391 allow session reuse! A fuller solution is in the works. 10392 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)] 10393 10394 *) Some more source tree cleanups (removed obsolete files 10395 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed 10396 permission on "config" script to be executable) and a fix for the INSTALL 10397 document. 10398 [Ulf Moeller <ulf@fitug.de>] 10399 10400 *) Remove some legacy and erroneous uses of malloc, free instead of 10401 Malloc, Free. 10402 [Lennart Bang <lob@netstream.se>, with minor changes by Steve] 10403 10404 *) Make rsa_oaep_test return non-zero on error. 10405 [Ulf Moeller <ulf@fitug.de>] 10406 10407 *) Add support for native Solaris shared libraries. Configure 10408 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice 10409 if someone would make that last step automatic. 10410 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>] 10411 10412 *) ctx_size was not built with the right compiler during "make links". Fixed. 10413 [Ben Laurie] 10414 10415 *) Change the meaning of 'ALL' in the cipher list. It now means "everything 10416 except NULL ciphers". This means the default cipher list will no longer 10417 enable NULL ciphers. They need to be specifically enabled e.g. with 10418 the string "DEFAULT:eNULL". 10419 [Steve Henson] 10420 10421 *) Fix to RSA private encryption routines: if p < q then it would 10422 occasionally produce an invalid result. This will only happen with 10423 externally generated keys because OpenSSL (and SSLeay) ensure p > q. 10424 [Steve Henson] 10425 10426 *) Be less restrictive and allow also `perl util/perlpath.pl 10427 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin', 10428 because this way one can also use an interpreter named `perl5' (which is 10429 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still 10430 installed as `perl'). 10431 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 10432 10433 *) Let util/clean-depend.pl work also with older Perl 5.00x versions. 10434 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 10435 10436 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add 10437 advapi32.lib to Win32 build and change the pem test comparision 10438 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the 10439 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h 10440 and crypto/des/ede_cbcm_enc.c. 10441 [Steve Henson] 10442 10443 *) DES quad checksum was broken on big-endian architectures. Fixed. 10444 [Ben Laurie] 10445 10446 *) Comment out two functions in bio.h that aren't implemented. Fix up the 10447 Win32 test batch file so it (might) work again. The Win32 test batch file 10448 is horrible: I feel ill.... 10449 [Steve Henson] 10450 10451 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected 10452 in e_os.h. Audit of header files to check ANSI and non ANSI 10453 sections: 10 functions were absent from non ANSI section and not exported 10454 from Windows DLLs. Fixed up libeay.num for new functions. 10455 [Steve Henson] 10456 10457 *) Make `openssl version' output lines consistent. 10458 [Ralf S. Engelschall] 10459 10460 *) Fix Win32 symbol export lists for BIO functions: Added 10461 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data 10462 to ms/libeay{16,32}.def. 10463 [Ralf S. Engelschall] 10464 10465 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled 10466 fine under Unix and passes some trivial tests I've now added. But the 10467 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was 10468 added to make sure no one expects that this stuff really works in the 10469 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources 10470 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and 10471 openssl_bio.xs. 10472 [Ralf S. Engelschall] 10473 10474 *) Fix the generation of two part addresses in perl. 10475 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie] 10476 10477 *) Add config entry for Linux on MIPS. 10478 [John Tobey <jtobey@channel1.com>] 10479 10480 *) Make links whenever Configure is run, unless we are on Windoze. 10481 [Ben Laurie] 10482 10483 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf. 10484 Currently only issuerAltName and AuthorityKeyIdentifier make any sense 10485 in CRLs. 10486 [Steve Henson] 10487 10488 *) Add a useful kludge to allow package maintainers to specify compiler and 10489 other platforms details on the command line without having to patch the 10490 Configure script everytime: One now can use ``perl Configure 10491 <id>:<details>'', i.e. platform ids are allowed to have details appended 10492 to them (seperated by colons). This is treated as there would be a static 10493 pre-configured entry in Configure's %table under key <id> with value 10494 <details> and ``perl Configure <id>'' is called. So, when you want to 10495 perform a quick test-compile under FreeBSD 3.1 with pgcc and without 10496 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"'' 10497 now, which overrides the FreeBSD-elf entry on-the-fly. 10498 [Ralf S. Engelschall] 10499 10500 *) Disable new TLS1 ciphersuites by default: they aren't official yet. 10501 [Ben Laurie] 10502 10503 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified 10504 on the `perl Configure ...' command line. This way one can compile 10505 OpenSSL libraries with Position Independent Code (PIC) which is needed 10506 for linking it into DSOs. 10507 [Ralf S. Engelschall] 10508 10509 *) Remarkably, export ciphers were totally broken and no-one had noticed! 10510 Fixed. 10511 [Ben Laurie] 10512 10513 *) Cleaned up the LICENSE document: The official contact for any license 10514 questions now is the OpenSSL core team under openssl-core@openssl.org. 10515 And add a paragraph about the dual-license situation to make sure people 10516 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply 10517 to the OpenSSL toolkit. 10518 [Ralf S. Engelschall] 10519 10520 *) General source tree makefile cleanups: Made `making xxx in yyy...' 10521 display consistent in the source tree and replaced `/bin/rm' by `rm'. 10522 Additonally cleaned up the `make links' target: Remove unnecessary 10523 semicolons, subsequent redundant removes, inline point.sh into mklink.sh 10524 to speed processing and no longer clutter the display with confusing 10525 stuff. Instead only the actually done links are displayed. 10526 [Ralf S. Engelschall] 10527 10528 *) Permit null encryption ciphersuites, used for authentication only. It used 10529 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this. 10530 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null 10531 encryption. 10532 [Ben Laurie] 10533 10534 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder 10535 signed attributes when verifying signatures (this would break them), 10536 the detached data encoding was wrong and public keys obtained using 10537 X509_get_pubkey() weren't freed. 10538 [Steve Henson] 10539 10540 *) Add text documentation for the BUFFER functions. Also added a work around 10541 to a Win95 console bug. This was triggered by the password read stuff: the 10542 last character typed gets carried over to the next fread(). If you were 10543 generating a new cert request using 'req' for example then the last 10544 character of the passphrase would be CR which would then enter the first 10545 field as blank. 10546 [Steve Henson] 10547 10548 *) Added the new `Includes OpenSSL Cryptography Software' button as 10549 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay 10550 button and can be used by applications based on OpenSSL to show the 10551 relationship to the OpenSSL project. 10552 [Ralf S. Engelschall] 10553 10554 *) Remove confusing variables in function signatures in files 10555 ssl/ssl_lib.c and ssl/ssl.h. 10556 [Lennart Bong <lob@kulthea.stacken.kth.se>] 10557 10558 *) Don't install bss_file.c under PREFIX/include/ 10559 [Lennart Bong <lob@kulthea.stacken.kth.se>] 10560 10561 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle 10562 functions that return function pointers and has support for NT specific 10563 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various 10564 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from 10565 unsigned to signed types: this was killing the Win32 compile. 10566 [Steve Henson] 10567 10568 *) Add new certificate file to stack functions, 10569 SSL_add_dir_cert_subjects_to_stack() and 10570 SSL_add_file_cert_subjects_to_stack(). These largely supplant 10571 SSL_load_client_CA_file(), and can be used to add multiple certs easily 10572 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()). 10573 This means that Apache-SSL and similar packages don't have to mess around 10574 to add as many CAs as they want to the preferred list. 10575 [Ben Laurie] 10576 10577 *) Experiment with doxygen documentation. Currently only partially applied to 10578 ssl/ssl_lib.c. 10579 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with 10580 openssl.doxy as the configuration file. 10581 [Ben Laurie] 10582 10583 *) Get rid of remaining C++-style comments which strict C compilers hate. 10584 [Ralf S. Engelschall, pointed out by Carlos Amengual] 10585 10586 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not 10587 compiled in by default: it has problems with large keys. 10588 [Steve Henson] 10589 10590 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and 10591 DH private keys and/or callback functions which directly correspond to 10592 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This 10593 is needed for applications which have to configure certificates on a 10594 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis 10595 (e.g. s_server). 10596 For the RSA certificate situation is makes no difference, but 10597 for the DSA certificate situation this fixes the "no shared cipher" 10598 problem where the OpenSSL cipher selection procedure failed because the 10599 temporary keys were not overtaken from the context and the API provided 10600 no way to reconfigure them. 10601 The new functions now let applications reconfigure the stuff and they 10602 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh, 10603 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new 10604 non-public-API function ssl_cert_instantiate() is used as a helper 10605 function and also to reduce code redundancy inside ssl_rsa.c. 10606 [Ralf S. Engelschall] 10607 10608 *) Move s_server -dcert and -dkey options out of the undocumented feature 10609 area because they are useful for the DSA situation and should be 10610 recognized by the users. 10611 [Ralf S. Engelschall] 10612 10613 *) Fix the cipher decision scheme for export ciphers: the export bits are 10614 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within 10615 SSL_EXP_MASK. So, the original variable has to be used instead of the 10616 already masked variable. 10617 [Richard Levitte <levitte@stacken.kth.se>] 10618 10619 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c 10620 [Richard Levitte <levitte@stacken.kth.se>] 10621 10622 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal() 10623 from `int' to `unsigned int' because it's a length and initialized by 10624 EVP_DigestFinal() which expects an `unsigned int *'. 10625 [Richard Levitte <levitte@stacken.kth.se>] 10626 10627 *) Don't hard-code path to Perl interpreter on shebang line of Configure 10628 script. Instead use the usual Shell->Perl transition trick. 10629 [Ralf S. Engelschall] 10630 10631 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates 10632 (in addition to RSA certificates) to match the behaviour of `openssl dsa 10633 -noout -modulus' as it's already the case for `openssl rsa -noout 10634 -modulus'. For RSA the -modulus is the real "modulus" while for DSA 10635 currently the public key is printed (a decision which was already done by 10636 `openssl dsa -modulus' in the past) which serves a similar purpose. 10637 Additionally the NO_RSA no longer completely removes the whole -modulus 10638 option; it now only avoids using the RSA stuff. Same applies to NO_DSA 10639 now, too. 10640 [Ralf S. Engelschall] 10641 10642 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested 10643 BIO. See the source (crypto/evp/bio_ok.c) for more info. 10644 [Arne Ansper <arne@ats.cyber.ee>] 10645 10646 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs 10647 to be added. Now both 'req' and 'ca' can use new objects defined in the 10648 config file. 10649 [Steve Henson] 10650 10651 *) Add cool BIO that does syslog (or event log on NT). 10652 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie] 10653 10654 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5, 10655 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and 10656 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher 10657 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt. 10658 [Ben Laurie] 10659 10660 *) Add preliminary config info for new extension code. 10661 [Steve Henson] 10662 10663 *) Make RSA_NO_PADDING really use no padding. 10664 [Ulf Moeller <ulf@fitug.de>] 10665 10666 *) Generate errors when private/public key check is done. 10667 [Ben Laurie] 10668 10669 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support 10670 for some CRL extensions and new objects added. 10671 [Steve Henson] 10672 10673 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private 10674 key usage extension and fuller support for authority key id. 10675 [Steve Henson] 10676 10677 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved 10678 padding method for RSA, which is recommended for new applications in PKCS 10679 #1 v2.0 (RFC 2437, October 1998). 10680 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical 10681 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure 10682 against Bleichbacher's attack on RSA. 10683 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by 10684 Ben Laurie] 10685 10686 *) Updates to the new SSL compression code 10687 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 10688 10689 *) Fix so that the version number in the master secret, when passed 10690 via RSA, checks that if TLS was proposed, but we roll back to SSLv3 10691 (because the server will not accept higher), that the version number 10692 is 0x03,0x01, not 0x03,0x00 10693 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 10694 10695 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory 10696 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes 10697 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c 10698 [Steve Henson] 10699 10700 *) Support for RAW extensions where an arbitrary extension can be 10701 created by including its DER encoding. See apps/openssl.cnf for 10702 an example. 10703 [Steve Henson] 10704 10705 *) Make sure latest Perl versions don't interpret some generated C array 10706 code as Perl array code in the crypto/err/err_genc.pl script. 10707 [Lars Weber <3weber@informatik.uni-hamburg.de>] 10708 10709 *) Modify ms/do_ms.bat to not generate assembly language makefiles since 10710 not many people have the assembler. Various Win32 compilation fixes and 10711 update to the INSTALL.W32 file with (hopefully) more accurate Win32 10712 build instructions. 10713 [Steve Henson] 10714 10715 *) Modify configure script 'Configure' to automatically create crypto/date.h 10716 file under Win32 and also build pem.h from pem.org. New script 10717 util/mkfiles.pl to create the MINFO file on environments that can't do a 10718 'make files': perl util/mkfiles.pl >MINFO should work. 10719 [Steve Henson] 10720 10721 *) Major rework of DES function declarations, in the pursuit of correctness 10722 and purity. As a result, many evil casts evaporated, and some weirdness, 10723 too. You may find this causes warnings in your code. Zapping your evil 10724 casts will probably fix them. Mostly. 10725 [Ben Laurie] 10726 10727 *) Fix for a typo in asn1.h. Bug fix to object creation script 10728 obj_dat.pl. It considered a zero in an object definition to mean 10729 "end of object": none of the objects in objects.h have any zeros 10730 so it wasn't spotted. 10731 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>] 10732 10733 *) Add support for Triple DES Cipher Block Chaining with Output Feedback 10734 Masking (CBCM). In the absence of test vectors, the best I have been able 10735 to do is check that the decrypt undoes the encrypt, so far. Send me test 10736 vectors if you have them. 10737 [Ben Laurie] 10738 10739 *) Correct calculation of key length for export ciphers (too much space was 10740 allocated for null ciphers). This has not been tested! 10741 [Ben Laurie] 10742 10743 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage 10744 message is now correct (it understands "crypto" and "ssl" on its 10745 command line). There is also now an "update" option. This will update 10746 the util/ssleay.num and util/libeay.num files with any new functions. 10747 If you do a: 10748 perl util/mkdef.pl crypto ssl update 10749 it will update them. 10750 [Steve Henson] 10751 10752 *) Overhauled the Perl interface (perl/*): 10753 - ported BN stuff to OpenSSL's different BN library 10754 - made the perl/ source tree CVS-aware 10755 - renamed the package from SSLeay to OpenSSL (the files still contain 10756 their history because I've copied them in the repository) 10757 - removed obsolete files (the test scripts will be replaced 10758 by better Test::Harness variants in the future) 10759 [Ralf S. Engelschall] 10760 10761 *) First cut for a very conservative source tree cleanup: 10762 1. merge various obsolete readme texts into doc/ssleay.txt 10763 where we collect the old documents and readme texts. 10764 2. remove the first part of files where I'm already sure that we no 10765 longer need them because of three reasons: either they are just temporary 10766 files which were left by Eric or they are preserved original files where 10767 I've verified that the diff is also available in the CVS via "cvs diff 10768 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for 10769 the crypto/md/ stuff). 10770 [Ralf S. Engelschall] 10771 10772 *) More extension code. Incomplete support for subject and issuer alt 10773 name, issuer and authority key id. Change the i2v function parameters 10774 and add an extra 'crl' parameter in the X509V3_CTX structure: guess 10775 what that's for :-) Fix to ASN1 macro which messed up 10776 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED. 10777 [Steve Henson] 10778 10779 *) Preliminary support for ENUMERATED type. This is largely copied from the 10780 INTEGER code. 10781 [Steve Henson] 10782 10783 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy. 10784 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 10785 10786 *) Make sure `make rehash' target really finds the `openssl' program. 10787 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 10788 10789 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd 10790 like to hear about it if this slows down other processors. 10791 [Ben Laurie] 10792 10793 *) Add CygWin32 platform information to Configure script. 10794 [Alan Batie <batie@aahz.jf.intel.com>] 10795 10796 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm' 10797 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>] 10798 10799 *) New program nseq to manipulate netscape certificate sequences 10800 [Steve Henson] 10801 10802 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a 10803 few typos. 10804 [Steve Henson] 10805 10806 *) Fixes to BN code. Previously the default was to define BN_RECURSION 10807 but the BN code had some problems that would cause failures when 10808 doing certificate verification and some other functions. 10809 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 10810 10811 *) Add ASN1 and PEM code to support netscape certificate sequences. 10812 [Steve Henson] 10813 10814 *) Add ASN1 and PEM code to support netscape certificate sequences. 10815 [Steve Henson] 10816 10817 *) Add several PKIX and private extended key usage OIDs. 10818 [Steve Henson] 10819 10820 *) Modify the 'ca' program to handle the new extension code. Modify 10821 openssl.cnf for new extension format, add comments. 10822 [Steve Henson] 10823 10824 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req' 10825 and add a sample to openssl.cnf so req -x509 now adds appropriate 10826 CA extensions. 10827 [Steve Henson] 10828 10829 *) Continued X509 V3 changes. Add to other makefiles, integrate with the 10830 error code, add initial support to X509_print() and x509 application. 10831 [Steve Henson] 10832 10833 *) Takes a deep breath and start addding X509 V3 extension support code. Add 10834 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this 10835 stuff is currently isolated and isn't even compiled yet. 10836 [Steve Henson] 10837 10838 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL 10839 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print. 10840 Removed the versions check from X509 routines when loading extensions: 10841 this allows certain broken certificates that don't set the version 10842 properly to be processed. 10843 [Steve Henson] 10844 10845 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another 10846 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which 10847 can still be regenerated with "make depend". 10848 [Ben Laurie] 10849 10850 *) Spelling mistake in C version of CAST-128. 10851 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>] 10852 10853 *) Changes to the error generation code. The perl script err-code.pl 10854 now reads in the old error codes and retains the old numbers, only 10855 adding new ones if necessary. It also only changes the .err files if new 10856 codes are added. The makefiles have been modified to only insert errors 10857 when needed (to avoid needlessly modifying header files). This is done 10858 by only inserting errors if the .err file is newer than the auto generated 10859 C file. To rebuild all the error codes from scratch (the old behaviour) 10860 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl 10861 or delete all the .err files. 10862 [Steve Henson] 10863 10864 *) CAST-128 was incorrectly implemented for short keys. The C version has 10865 been fixed, but is untested. The assembler versions are also fixed, but 10866 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing 10867 to regenerate it if needed. 10868 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun 10869 Hagino <itojun@kame.net>] 10870 10871 *) File was opened incorrectly in randfile.c. 10872 [Ulf M��ller <ulf@fitug.de>] 10873 10874 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print 10875 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or 10876 GeneralizedTime. ASN1_TIME is the proper type used in certificates et 10877 al: it's just almost always a UTCTime. Note this patch adds new error 10878 codes so do a "make errors" if there are problems. 10879 [Steve Henson] 10880 10881 *) Correct Linux 1 recognition in config. 10882 [Ulf M��ller <ulf@fitug.de>] 10883 10884 *) Remove pointless MD5 hash when using DSA keys in ca. 10885 [Anonymous <nobody@replay.com>] 10886 10887 *) Generate an error if given an empty string as a cert directory. Also 10888 generate an error if handed NULL (previously returned 0 to indicate an 10889 error, but didn't set one). 10890 [Ben Laurie, reported by Anonymous <nobody@replay.com>] 10891 10892 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last. 10893 [Ben Laurie] 10894 10895 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct 10896 parameters. This was causing a warning which killed off the Win32 compile. 10897 [Steve Henson] 10898 10899 *) Remove C++ style comments from crypto/bn/bn_local.h. 10900 [Neil Costigan <neil.costigan@celocom.com>] 10901 10902 *) The function OBJ_txt2nid was broken. It was supposed to return a nid 10903 based on a text string, looking up short and long names and finally 10904 "dot" format. The "dot" format stuff didn't work. Added new function 10905 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote 10906 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the 10907 OID is not part of the table. 10908 [Steve Henson] 10909 10910 *) Add prototypes to X509 lookup/verify methods, fixing a bug in 10911 X509_LOOKUP_by_alias(). 10912 [Ben Laurie] 10913 10914 *) Sort openssl functions by name. 10915 [Ben Laurie] 10916 10917 *) Get the gendsa program working (hopefully) and add it to app list. Remove 10918 encryption from sample DSA keys (in case anyone is interested the password 10919 was "1234"). 10920 [Steve Henson] 10921 10922 *) Make _all_ *_free functions accept a NULL pointer. 10923 [Frans Heymans <fheymans@isaserver.be>] 10924 10925 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use 10926 NULL pointers. 10927 [Anonymous <nobody@replay.com>] 10928 10929 *) s_server should send the CAfile as acceptable CAs, not its own cert. 10930 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] 10931 10932 *) Don't blow it for numeric -newkey arguments to apps/req. 10933 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] 10934 10935 *) Temp key "for export" tests were wrong in s3_srvr.c. 10936 [Anonymous <nobody@replay.com>] 10937 10938 *) Add prototype for temp key callback functions 10939 SSL_CTX_set_tmp_{rsa,dh}_callback(). 10940 [Ben Laurie] 10941 10942 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and 10943 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey(). 10944 [Steve Henson] 10945 10946 *) X509_name_add_entry() freed the wrong thing after an error. 10947 [Arne Ansper <arne@ats.cyber.ee>] 10948 10949 *) rsa_eay.c would attempt to free a NULL context. 10950 [Arne Ansper <arne@ats.cyber.ee>] 10951 10952 *) BIO_s_socket() had a broken should_retry() on Windoze. 10953 [Arne Ansper <arne@ats.cyber.ee>] 10954 10955 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH. 10956 [Arne Ansper <arne@ats.cyber.ee>] 10957 10958 *) Make sure the already existing X509_STORE->depth variable is initialized 10959 in X509_STORE_new(), but document the fact that this variable is still 10960 unused in the certificate verification process. 10961 [Ralf S. Engelschall] 10962 10963 *) Fix the various library and apps files to free up pkeys obtained from 10964 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions. 10965 [Steve Henson] 10966 10967 *) Fix reference counting in X509_PUBKEY_get(). This makes 10968 demos/maurice/example2.c work, amongst others, probably. 10969 [Steve Henson and Ben Laurie] 10970 10971 *) First cut of a cleanup for apps/. First the `ssleay' program is now named 10972 `openssl' and second, the shortcut symlinks for the `openssl <command>' 10973 are no longer created. This way we have a single and consistent command 10974 line interface `openssl <command>', similar to `cvs <command>'. 10975 [Ralf S. Engelschall, Paul Sutton and Ben Laurie] 10976 10977 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey 10978 BIT STRING wrapper always have zero unused bits. 10979 [Steve Henson] 10980 10981 *) Add CA.pl, perl version of CA.sh, add extended key usage OID. 10982 [Steve Henson] 10983 10984 *) Make the top-level INSTALL documentation easier to understand. 10985 [Paul Sutton] 10986 10987 *) Makefiles updated to exit if an error occurs in a sub-directory 10988 make (including if user presses ^C) [Paul Sutton] 10989 10990 *) Make Montgomery context stuff explicit in RSA data structure. 10991 [Ben Laurie] 10992 10993 *) Fix build order of pem and err to allow for generated pem.h. 10994 [Ben Laurie] 10995 10996 *) Fix renumbering bug in X509_NAME_delete_entry(). 10997 [Ben Laurie] 10998 10999 *) Enhanced the err-ins.pl script so it makes the error library number 11000 global and can add a library name. This is needed for external ASN1 and 11001 other error libraries. 11002 [Steve Henson] 11003 11004 *) Fixed sk_insert which never worked properly. 11005 [Steve Henson] 11006 11007 *) Fix ASN1 macros so they can handle indefinite length construted 11008 EXPLICIT tags. Some non standard certificates use these: they can now 11009 be read in. 11010 [Steve Henson] 11011 11012 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc) 11013 into a single doc/ssleay.txt bundle. This way the information is still 11014 preserved but no longer messes up this directory. Now it's new room for 11015 the new set of documenation files. 11016 [Ralf S. Engelschall] 11017 11018 *) SETs were incorrectly DER encoded. This was a major pain, because they 11019 shared code with SEQUENCEs, which aren't coded the same. This means that 11020 almost everything to do with SETs or SEQUENCEs has either changed name or 11021 number of arguments. 11022 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>] 11023 11024 *) Fix test data to work with the above. 11025 [Ben Laurie] 11026 11027 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but 11028 was already fixed by Eric for 0.9.1 it seems. 11029 [Ben Laurie - pointed out by Ulf M��ller <ulf@fitug.de>] 11030 11031 *) Autodetect FreeBSD3. 11032 [Ben Laurie] 11033 11034 *) Fix various bugs in Configure. This affects the following platforms: 11035 nextstep 11036 ncr-scde 11037 unixware-2.0 11038 unixware-2.0-pentium 11039 sco5-cc. 11040 [Ben Laurie] 11041 11042 *) Eliminate generated files from CVS. Reorder tests to regenerate files 11043 before they are needed. 11044 [Ben Laurie] 11045 11046 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy). 11047 [Ben Laurie] 11048 11049 11050 Changes between 0.9.1b and 0.9.1c [23-Dec-1998] 11051 11052 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and 11053 changed SSLeay to OpenSSL in version strings. 11054 [Ralf S. Engelschall] 11055 11056 *) Some fixups to the top-level documents. 11057 [Paul Sutton] 11058 11059 *) Fixed the nasty bug where rsaref.h was not found under compile-time 11060 because the symlink to include/ was missing. 11061 [Ralf S. Engelschall] 11062 11063 *) Incorporated the popular no-RSA/DSA-only patches 11064 which allow to compile a RSA-free SSLeay. 11065 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall] 11066 11067 *) Fixed nasty rehash problem under `make -f Makefile.ssl links' 11068 when "ssleay" is still not found. 11069 [Ralf S. Engelschall] 11070 11071 *) Added more platforms to Configure: Cray T3E, HPUX 11, 11072 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>] 11073 11074 *) Updated the README file. 11075 [Ralf S. Engelschall] 11076 11077 *) Added various .cvsignore files in the CVS repository subdirs 11078 to make a "cvs update" really silent. 11079 [Ralf S. Engelschall] 11080 11081 *) Recompiled the error-definition header files and added 11082 missing symbols to the Win32 linker tables. 11083 [Ralf S. Engelschall] 11084 11085 *) Cleaned up the top-level documents; 11086 o new files: CHANGES and LICENSE 11087 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay 11088 o merged COPYRIGHT into LICENSE 11089 o removed obsolete TODO file 11090 o renamed MICROSOFT to INSTALL.W32 11091 [Ralf S. Engelschall] 11092 11093 *) Removed dummy files from the 0.9.1b source tree: 11094 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi 11095 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f 11096 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f 11097 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f 11098 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f 11099 [Ralf S. Engelschall] 11100 11101 *) Added various platform portability fixes. 11102 [Mark J. Cox] 11103 11104 *) The Genesis of the OpenSSL rpject: 11105 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A. 11106 Young and Tim J. Hudson created while they were working for C2Net until 11107 summer 1998. 11108 [The OpenSSL Project] 11109 11110 11111 Changes between 0.9.0b and 0.9.1b [not released] 11112 11113 *) Updated a few CA certificates under certs/ 11114 [Eric A. Young] 11115 11116 *) Changed some BIGNUM api stuff. 11117 [Eric A. Young] 11118 11119 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD, 11120 DGUX x86, Linux Alpha, etc. 11121 [Eric A. Young] 11122 11123 *) New COMP library [crypto/comp/] for SSL Record Layer Compression: 11124 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is 11125 available). 11126 [Eric A. Young] 11127 11128 *) Add -strparse option to asn1pars program which parses nested 11129 binary structures 11130 [Dr Stephen Henson <shenson@bigfoot.com>] 11131 11132 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs. 11133 [Eric A. Young] 11134 11135 *) DSA fix for "ca" program. 11136 [Eric A. Young] 11137 11138 *) Added "-genkey" option to "dsaparam" program. 11139 [Eric A. Young] 11140 11141 *) Added RIPE MD160 (rmd160) message digest. 11142 [Eric A. Young] 11143 11144 *) Added -a (all) option to "ssleay version" command. 11145 [Eric A. Young] 11146 11147 *) Added PLATFORM define which is the id given to Configure. 11148 [Eric A. Young] 11149 11150 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking. 11151 [Eric A. Young] 11152 11153 *) Extended the ASN.1 parser routines. 11154 [Eric A. Young] 11155 11156 *) Extended BIO routines to support REUSEADDR, seek, tell, etc. 11157 [Eric A. Young] 11158 11159 *) Added a BN_CTX to the BN library. 11160 [Eric A. Young] 11161 11162 *) Fixed the weak key values in DES library 11163 [Eric A. Young] 11164 11165 *) Changed API in EVP library for cipher aliases. 11166 [Eric A. Young] 11167 11168 *) Added support for RC2/64bit cipher. 11169 [Eric A. Young] 11170 11171 *) Converted the lhash library to the crypto/mem.c functions. 11172 [Eric A. Young] 11173 11174 *) Added more recognized ASN.1 object ids. 11175 [Eric A. Young] 11176 11177 *) Added more RSA padding checks for SSL/TLS. 11178 [Eric A. Young] 11179 11180 *) Added BIO proxy/filter functionality. 11181 [Eric A. Young] 11182 11183 *) Added extra_certs to SSL_CTX which can be used 11184 send extra CA certificates to the client in the CA cert chain sending 11185 process. It can be configured with SSL_CTX_add_extra_chain_cert(). 11186 [Eric A. Young] 11187 11188 *) Now Fortezza is denied in the authentication phase because 11189 this is key exchange mechanism is not supported by SSLeay at all. 11190 [Eric A. Young] 11191 11192 *) Additional PKCS1 checks. 11193 [Eric A. Young] 11194 11195 *) Support the string "TLSv1" for all TLS v1 ciphers. 11196 [Eric A. Young] 11197 11198 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the 11199 ex_data index of the SSL context in the X509_STORE_CTX ex_data. 11200 [Eric A. Young] 11201 11202 *) Fixed a few memory leaks. 11203 [Eric A. Young] 11204 11205 *) Fixed various code and comment typos. 11206 [Eric A. Young] 11207 11208 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0 11209 bytes sent in the client random. 11210 [Edward Bishop <ebishop@spyglass.com>] 11211 11212