ssl3.h revision 267104
1/* ssl/ssl3.h */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58/* ==================================================================== 59 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111/* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 117#ifndef HEADER_SSL3_H 118#define HEADER_SSL3_H 119 120#ifndef OPENSSL_NO_COMP 121#include <openssl/comp.h> 122#endif 123#include <openssl/buffer.h> 124#include <openssl/evp.h> 125#include <openssl/ssl.h> 126 127#ifdef __cplusplus 128extern "C" { 129#endif 130 131/* Signalling cipher suite value: from draft-ietf-tls-renegotiation-03.txt */ 132#define SSL3_CK_SCSV 0x030000FF 133 134#define SSL3_CK_RSA_NULL_MD5 0x03000001 135#define SSL3_CK_RSA_NULL_SHA 0x03000002 136#define SSL3_CK_RSA_RC4_40_MD5 0x03000003 137#define SSL3_CK_RSA_RC4_128_MD5 0x03000004 138#define SSL3_CK_RSA_RC4_128_SHA 0x03000005 139#define SSL3_CK_RSA_RC2_40_MD5 0x03000006 140#define SSL3_CK_RSA_IDEA_128_SHA 0x03000007 141#define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008 142#define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009 143#define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A 144 145#define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B 146#define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C 147#define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D 148#define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E 149#define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F 150#define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010 151 152#define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011 153#define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012 154#define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013 155#define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014 156#define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015 157#define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016 158 159#define SSL3_CK_ADH_RC4_40_MD5 0x03000017 160#define SSL3_CK_ADH_RC4_128_MD5 0x03000018 161#define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019 162#define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A 163#define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B 164 165#if 0 166 #define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C 167 #define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D 168 #if 0 /* Because it clashes with KRB5, is never used any more, and is safe 169 to remove according to David Hopwood <david.hopwood@zetnet.co.uk> 170 of the ietf-tls list */ 171 #define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E 172 #endif 173#endif 174 175/* VRS Additional Kerberos5 entries 176 */ 177#define SSL3_CK_KRB5_DES_64_CBC_SHA 0x0300001E 178#define SSL3_CK_KRB5_DES_192_CBC3_SHA 0x0300001F 179#define SSL3_CK_KRB5_RC4_128_SHA 0x03000020 180#define SSL3_CK_KRB5_IDEA_128_CBC_SHA 0x03000021 181#define SSL3_CK_KRB5_DES_64_CBC_MD5 0x03000022 182#define SSL3_CK_KRB5_DES_192_CBC3_MD5 0x03000023 183#define SSL3_CK_KRB5_RC4_128_MD5 0x03000024 184#define SSL3_CK_KRB5_IDEA_128_CBC_MD5 0x03000025 185 186#define SSL3_CK_KRB5_DES_40_CBC_SHA 0x03000026 187#define SSL3_CK_KRB5_RC2_40_CBC_SHA 0x03000027 188#define SSL3_CK_KRB5_RC4_40_SHA 0x03000028 189#define SSL3_CK_KRB5_DES_40_CBC_MD5 0x03000029 190#define SSL3_CK_KRB5_RC2_40_CBC_MD5 0x0300002A 191#define SSL3_CK_KRB5_RC4_40_MD5 0x0300002B 192 193#define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5" 194#define SSL3_TXT_RSA_NULL_SHA "NULL-SHA" 195#define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5" 196#define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5" 197#define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA" 198#define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5" 199#define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA" 200#define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA" 201#define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA" 202#define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA" 203 204#define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA" 205#define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA" 206#define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA" 207#define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA" 208#define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA" 209#define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA" 210 211#define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA" 212#define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA" 213#define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA" 214#define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA" 215#define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA" 216#define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA" 217 218#define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5" 219#define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5" 220#define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA" 221#define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA" 222#define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA" 223 224#if 0 225 #define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA" 226 #define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA" 227 #define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA" 228#endif 229 230#define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA" 231#define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA" 232#define SSL3_TXT_KRB5_RC4_128_SHA "KRB5-RC4-SHA" 233#define SSL3_TXT_KRB5_IDEA_128_CBC_SHA "KRB5-IDEA-CBC-SHA" 234#define SSL3_TXT_KRB5_DES_64_CBC_MD5 "KRB5-DES-CBC-MD5" 235#define SSL3_TXT_KRB5_DES_192_CBC3_MD5 "KRB5-DES-CBC3-MD5" 236#define SSL3_TXT_KRB5_RC4_128_MD5 "KRB5-RC4-MD5" 237#define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 "KRB5-IDEA-CBC-MD5" 238 239#define SSL3_TXT_KRB5_DES_40_CBC_SHA "EXP-KRB5-DES-CBC-SHA" 240#define SSL3_TXT_KRB5_RC2_40_CBC_SHA "EXP-KRB5-RC2-CBC-SHA" 241#define SSL3_TXT_KRB5_RC4_40_SHA "EXP-KRB5-RC4-SHA" 242#define SSL3_TXT_KRB5_DES_40_CBC_MD5 "EXP-KRB5-DES-CBC-MD5" 243#define SSL3_TXT_KRB5_RC2_40_CBC_MD5 "EXP-KRB5-RC2-CBC-MD5" 244#define SSL3_TXT_KRB5_RC4_40_MD5 "EXP-KRB5-RC4-MD5" 245 246#define SSL3_SSL_SESSION_ID_LENGTH 32 247#define SSL3_MAX_SSL_SESSION_ID_LENGTH 32 248 249#define SSL3_MASTER_SECRET_SIZE 48 250#define SSL3_RANDOM_SIZE 32 251#define SSL3_SESSION_ID_SIZE 32 252#define SSL3_RT_HEADER_LENGTH 5 253 254#ifndef SSL3_ALIGN_PAYLOAD 255 /* Some will argue that this increases memory footprint, but it's 256 * not actually true. Point is that malloc has to return at least 257 * 64-bit aligned pointers, meaning that allocating 5 bytes wastes 258 * 3 bytes in either case. Suggested pre-gaping simply moves these 259 * wasted bytes from the end of allocated region to its front, 260 * but makes data payload aligned, which improves performance:-) */ 261# define SSL3_ALIGN_PAYLOAD 8 262#else 263# if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0 264# error "insane SSL3_ALIGN_PAYLOAD" 265# undef SSL3_ALIGN_PAYLOAD 266# endif 267#endif 268 269/* This is the maximum MAC (digest) size used by the SSL library. 270 * Currently maximum of 20 is used by SHA1, but we reserve for 271 * future extension for 512-bit hashes. 272 */ 273 274#define SSL3_RT_MAX_MD_SIZE 64 275 276/* Maximum block size used in all ciphersuites. Currently 16 for AES. 277 */ 278 279#define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16 280 281#define SSL3_RT_MAX_EXTRA (16384) 282 283/* Maximum plaintext length: defined by SSL/TLS standards */ 284#define SSL3_RT_MAX_PLAIN_LENGTH 16384 285/* Maximum compression overhead: defined by SSL/TLS standards */ 286#define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024 287 288/* The standards give a maximum encryption overhead of 1024 bytes. 289 * In practice the value is lower than this. The overhead is the maximum 290 * number of padding bytes (256) plus the mac size. 291 */ 292#define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE) 293 294/* OpenSSL currently only uses a padding length of at most one block so 295 * the send overhead is smaller. 296 */ 297 298#define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \ 299 (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE) 300 301/* If compression isn't used don't include the compression overhead */ 302 303#ifdef OPENSSL_NO_COMP 304#define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH 305#else 306#define SSL3_RT_MAX_COMPRESSED_LENGTH \ 307 (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD) 308#endif 309#define SSL3_RT_MAX_ENCRYPTED_LENGTH \ 310 (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH) 311#define SSL3_RT_MAX_PACKET_SIZE \ 312 (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH) 313 314#define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54" 315#define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52" 316 317#define SSL3_VERSION 0x0300 318#define SSL3_VERSION_MAJOR 0x03 319#define SSL3_VERSION_MINOR 0x00 320 321#define SSL3_RT_CHANGE_CIPHER_SPEC 20 322#define SSL3_RT_ALERT 21 323#define SSL3_RT_HANDSHAKE 22 324#define SSL3_RT_APPLICATION_DATA 23 325#define TLS1_RT_HEARTBEAT 24 326 327#define SSL3_AL_WARNING 1 328#define SSL3_AL_FATAL 2 329 330#define SSL3_AD_CLOSE_NOTIFY 0 331#define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */ 332#define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */ 333#define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */ 334#define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */ 335#define SSL3_AD_NO_CERTIFICATE 41 336#define SSL3_AD_BAD_CERTIFICATE 42 337#define SSL3_AD_UNSUPPORTED_CERTIFICATE 43 338#define SSL3_AD_CERTIFICATE_REVOKED 44 339#define SSL3_AD_CERTIFICATE_EXPIRED 45 340#define SSL3_AD_CERTIFICATE_UNKNOWN 46 341#define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */ 342 343#define TLS1_HB_REQUEST 1 344#define TLS1_HB_RESPONSE 2 345 346#ifndef OPENSSL_NO_SSL_INTERN 347 348typedef struct ssl3_record_st 349 { 350/*r */ int type; /* type of record */ 351/*rw*/ unsigned int length; /* How many bytes available */ 352/*r */ unsigned int off; /* read/write offset into 'buf' */ 353/*rw*/ unsigned char *data; /* pointer to the record data */ 354/*rw*/ unsigned char *input; /* where the decode bytes are */ 355/*r */ unsigned char *comp; /* only used with decompression - malloc()ed */ 356/*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */ 357/*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ 358 } SSL3_RECORD; 359 360typedef struct ssl3_buffer_st 361 { 362 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, 363 * see ssl3_setup_buffers() */ 364 size_t len; /* buffer size */ 365 int offset; /* where to 'copy from' */ 366 int left; /* how many bytes left */ 367 } SSL3_BUFFER; 368 369#endif 370 371#define SSL3_CT_RSA_SIGN 1 372#define SSL3_CT_DSS_SIGN 2 373#define SSL3_CT_RSA_FIXED_DH 3 374#define SSL3_CT_DSS_FIXED_DH 4 375#define SSL3_CT_RSA_EPHEMERAL_DH 5 376#define SSL3_CT_DSS_EPHEMERAL_DH 6 377#define SSL3_CT_FORTEZZA_DMS 20 378/* SSL3_CT_NUMBER is used to size arrays and it must be large 379 * enough to contain all of the cert types defined either for 380 * SSLv3 and TLSv1. 381 */ 382#define SSL3_CT_NUMBER 9 383 384 385#define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001 386#define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002 387#define SSL3_FLAGS_POP_BUFFER 0x0004 388#define TLS1_FLAGS_TLS_PADDING_BUG 0x0008 389#define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010 390#define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020 391 392/* SSL3_FLAGS_SGC_RESTART_DONE is set when we 393 * restart a handshake because of MS SGC and so prevents us 394 * from restarting the handshake in a loop. It's reset on a 395 * renegotiation, so effectively limits the client to one restart 396 * per negotiation. This limits the possibility of a DDoS 397 * attack where the client handshakes in a loop using SGC to 398 * restart. Servers which permit renegotiation can still be 399 * effected, but we can't prevent that. 400 */ 401#define SSL3_FLAGS_SGC_RESTART_DONE 0x0040 402#define SSL3_FLAGS_CCS_OK 0x0080 403 404#ifndef OPENSSL_NO_SSL_INTERN 405 406typedef struct ssl3_state_st 407 { 408 long flags; 409 int delay_buf_pop_ret; 410 411 unsigned char read_sequence[8]; 412 int read_mac_secret_size; 413 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 414 unsigned char write_sequence[8]; 415 int write_mac_secret_size; 416 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 417 418 unsigned char server_random[SSL3_RANDOM_SIZE]; 419 unsigned char client_random[SSL3_RANDOM_SIZE]; 420 421 /* flags for countermeasure against known-IV weakness */ 422 int need_empty_fragments; 423 int empty_fragment_done; 424 425 /* The value of 'extra' when the buffers were initialized */ 426 int init_extra; 427 428 SSL3_BUFFER rbuf; /* read IO goes into here */ 429 SSL3_BUFFER wbuf; /* write IO goes into here */ 430 431 SSL3_RECORD rrec; /* each decoded record goes in here */ 432 SSL3_RECORD wrec; /* goes out from here */ 433 434 /* storage for Alert/Handshake protocol data received but not 435 * yet processed by ssl3_read_bytes: */ 436 unsigned char alert_fragment[2]; 437 unsigned int alert_fragment_len; 438 unsigned char handshake_fragment[4]; 439 unsigned int handshake_fragment_len; 440 441 /* partial write - check the numbers match */ 442 unsigned int wnum; /* number of bytes sent so far */ 443 int wpend_tot; /* number bytes written */ 444 int wpend_type; 445 int wpend_ret; /* number of bytes submitted */ 446 const unsigned char *wpend_buf; 447 448 /* used during startup, digest all incoming/outgoing packets */ 449 BIO *handshake_buffer; 450 /* When set of handshake digests is determined, buffer is hashed 451 * and freed and MD_CTX-es for all required digests are stored in 452 * this array */ 453 EVP_MD_CTX **handshake_dgst; 454 /* this is set whenerver we see a change_cipher_spec message 455 * come in when we are not looking for one */ 456 int change_cipher_spec; 457 458 int warn_alert; 459 int fatal_alert; 460 /* we allow one fatal and one warning alert to be outstanding, 461 * send close alert via the warning alert */ 462 int alert_dispatch; 463 unsigned char send_alert[2]; 464 465 /* This flag is set when we should renegotiate ASAP, basically when 466 * there is no more data in the read or write buffers */ 467 int renegotiate; 468 int total_renegotiations; 469 int num_renegotiations; 470 471 int in_read_app_data; 472 473 /* Opaque PRF input as used for the current handshake. 474 * These fields are used only if TLSEXT_TYPE_opaque_prf_input is defined 475 * (otherwise, they are merely present to improve binary compatibility) */ 476 void *client_opaque_prf_input; 477 size_t client_opaque_prf_input_len; 478 void *server_opaque_prf_input; 479 size_t server_opaque_prf_input_len; 480 481 struct { 482 /* actually only needs to be 16+20 */ 483 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; 484 485 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 486 unsigned char finish_md[EVP_MAX_MD_SIZE*2]; 487 int finish_md_len; 488 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; 489 int peer_finish_md_len; 490 491 unsigned long message_size; 492 int message_type; 493 494 /* used to hold the new cipher we are going to use */ 495 const SSL_CIPHER *new_cipher; 496#ifndef OPENSSL_NO_DH 497 DH *dh; 498#endif 499 500#ifndef OPENSSL_NO_ECDH 501 EC_KEY *ecdh; /* holds short lived ECDH key */ 502#endif 503 504 /* used when SSL_ST_FLUSH_DATA is entered */ 505 int next_state; 506 507 int reuse_message; 508 509 /* used for certificate requests */ 510 int cert_req; 511 int ctype_num; 512 char ctype[SSL3_CT_NUMBER]; 513 STACK_OF(X509_NAME) *ca_names; 514 515 int use_rsa_tmp; 516 517 int key_block_length; 518 unsigned char *key_block; 519 520 const EVP_CIPHER *new_sym_enc; 521 const EVP_MD *new_hash; 522 int new_mac_pkey_type; 523 int new_mac_secret_size; 524#ifndef OPENSSL_NO_COMP 525 const SSL_COMP *new_compression; 526#else 527 char *new_compression; 528#endif 529 int cert_request; 530 } tmp; 531 532 /* Connection binding to prevent renegotiation attacks */ 533 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 534 unsigned char previous_client_finished_len; 535 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 536 unsigned char previous_server_finished_len; 537 int send_connection_binding; /* TODOEKR */ 538 539#ifndef OPENSSL_NO_NEXTPROTONEG 540 /* Set if we saw the Next Protocol Negotiation extension from our peer. */ 541 int next_proto_neg_seen; 542#endif 543 } SSL3_STATE; 544 545#endif 546 547/* SSLv3 */ 548/*client */ 549/* extra state */ 550#define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT) 551#ifndef OPENSSL_NO_SCTP 552#define DTLS1_SCTP_ST_CW_WRITE_SOCK (0x310|SSL_ST_CONNECT) 553#define DTLS1_SCTP_ST_CR_READ_SOCK (0x320|SSL_ST_CONNECT) 554#endif 555/* write to server */ 556#define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT) 557#define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT) 558/* read from server */ 559#define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT) 560#define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT) 561#define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT) 562#define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT) 563#define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT) 564#define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT) 565#define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT) 566#define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT) 567#define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT) 568#define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT) 569#define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT) 570#define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT) 571/* write to server */ 572#define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT) 573#define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT) 574#define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT) 575#define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT) 576#define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT) 577#define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT) 578#define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT) 579#define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT) 580#define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT) 581#define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT) 582#ifndef OPENSSL_NO_NEXTPROTONEG 583#define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT) 584#define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT) 585#endif 586#define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT) 587#define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT) 588/* read from server */ 589#define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT) 590#define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT) 591#define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT) 592#define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT) 593#define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT) 594#define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT) 595#define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT) 596#define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT) 597 598/* server */ 599/* extra state */ 600#define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT) 601#ifndef OPENSSL_NO_SCTP 602#define DTLS1_SCTP_ST_SW_WRITE_SOCK (0x310|SSL_ST_ACCEPT) 603#define DTLS1_SCTP_ST_SR_READ_SOCK (0x320|SSL_ST_ACCEPT) 604#endif 605/* read from client */ 606/* Do not change the number values, they do matter */ 607#define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT) 608#define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT) 609#define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT) 610/* write to client */ 611#define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT) 612#define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT) 613#define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT) 614#define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT) 615#define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT) 616#define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT) 617#define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT) 618#define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT) 619#define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT) 620#define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT) 621#define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT) 622#define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT) 623#define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT) 624#define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT) 625#define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT) 626/* read from client */ 627#define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT) 628#define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT) 629#define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT) 630#define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT) 631#define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT) 632#define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT) 633#define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT) 634#define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT) 635#ifndef OPENSSL_NO_NEXTPROTONEG 636#define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT) 637#define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT) 638#endif 639#define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT) 640#define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT) 641/* write to client */ 642#define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT) 643#define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT) 644#define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT) 645#define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT) 646#define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT) 647#define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT) 648#define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT) 649#define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT) 650 651#define SSL3_MT_HELLO_REQUEST 0 652#define SSL3_MT_CLIENT_HELLO 1 653#define SSL3_MT_SERVER_HELLO 2 654#define SSL3_MT_NEWSESSION_TICKET 4 655#define SSL3_MT_CERTIFICATE 11 656#define SSL3_MT_SERVER_KEY_EXCHANGE 12 657#define SSL3_MT_CERTIFICATE_REQUEST 13 658#define SSL3_MT_SERVER_DONE 14 659#define SSL3_MT_CERTIFICATE_VERIFY 15 660#define SSL3_MT_CLIENT_KEY_EXCHANGE 16 661#define SSL3_MT_FINISHED 20 662#define SSL3_MT_CERTIFICATE_STATUS 22 663#ifndef OPENSSL_NO_NEXTPROTONEG 664#define SSL3_MT_NEXT_PROTO 67 665#endif 666#define DTLS1_MT_HELLO_VERIFY_REQUEST 3 667 668 669#define SSL3_MT_CCS 1 670 671/* These are used when changing over to a new cipher */ 672#define SSL3_CC_READ 0x01 673#define SSL3_CC_WRITE 0x02 674#define SSL3_CC_CLIENT 0x10 675#define SSL3_CC_SERVER 0x20 676#define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE) 677#define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ) 678#define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ) 679#define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE) 680 681#ifdef __cplusplus 682} 683#endif 684#endif 685 686