1 /* ssl/ssl3.h */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 (at) 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 (at) cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh (at) 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 128 extern "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 (at) 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 /* Default buffer length used for writen records. Thus a generated record 284 * will contain plaintext no larger than this value. */ 285 #define SSL3_RT_DEFAULT_PLAIN_LENGTH 2048 286 /* Maximum plaintext length: defined by SSL/TLS standards */ 287 #define SSL3_RT_MAX_PLAIN_LENGTH 16384 288 /* Maximum compression overhead: defined by SSL/TLS standards */ 289 #define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024 290 291 /* The standards give a maximum encryption overhead of 1024 bytes. 292 * In practice the value is lower than this. The overhead is the maximum 293 * number of padding bytes (256) plus the mac size. 294 */ 295 #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE) 296 297 /* OpenSSL currently only uses a padding length of at most one block so 298 * the send overhead is smaller. 299 */ 300 301 #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \ 302 (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE) 303 304 /* If compression isn't used don't include the compression overhead */ 305 306 #ifdef OPENSSL_NO_COMP 307 #define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH 308 #else 309 #define SSL3_RT_MAX_COMPRESSED_LENGTH \ 310 (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD) 311 #endif 312 #define SSL3_RT_MAX_ENCRYPTED_LENGTH \ 313 (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH) 314 #define SSL3_RT_MAX_PACKET_SIZE \ 315 (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH) 316 317 /* Extra space for empty fragment, headers, MAC, and padding. */ 318 #define SSL3_RT_DEFAULT_WRITE_OVERHEAD 256 319 #define SSL3_RT_DEFAULT_PACKET_SIZE 4096 - SSL3_RT_DEFAULT_WRITE_OVERHEAD 320 #if SSL3_RT_DEFAULT_PLAIN_LENGTH + SSL3_RT_DEFAULT_WRITE_OVERHEAD > SSL3_RT_DEFAULT_PACKET_SIZE 321 #error "Insufficient space allocated for write buffers." 322 #endif 323 324 #define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54" 325 #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52" 326 327 #define SSL3_VERSION 0x0300 328 #define SSL3_VERSION_MAJOR 0x03 329 #define SSL3_VERSION_MINOR 0x00 330 331 #define SSL3_RT_CHANGE_CIPHER_SPEC 20 332 #define SSL3_RT_ALERT 21 333 #define SSL3_RT_HANDSHAKE 22 334 #define SSL3_RT_APPLICATION_DATA 23 335 #define TLS1_RT_HEARTBEAT 24 336 337 #define SSL3_AL_WARNING 1 338 #define SSL3_AL_FATAL 2 339 340 #define SSL3_AD_CLOSE_NOTIFY 0 341 #define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */ 342 #define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */ 343 #define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */ 344 #define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */ 345 #define SSL3_AD_NO_CERTIFICATE 41 346 #define SSL3_AD_BAD_CERTIFICATE 42 347 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43 348 #define SSL3_AD_CERTIFICATE_REVOKED 44 349 #define SSL3_AD_CERTIFICATE_EXPIRED 45 350 #define SSL3_AD_CERTIFICATE_UNKNOWN 46 351 #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */ 352 353 #define TLS1_HB_REQUEST 1 354 #define TLS1_HB_RESPONSE 2 355 356 #ifndef OPENSSL_NO_SSL_INTERN 357 358 typedef struct ssl3_record_st 359 { 360 /*r */ int type; /* type of record */ 361 /*rw*/ unsigned int length; /* How many bytes available */ 362 /*r */ unsigned int off; /* read/write offset into 'buf' */ 363 /*rw*/ unsigned char *data; /* pointer to the record data */ 364 /*rw*/ unsigned char *input; /* where the decode bytes are */ 365 /*r */ unsigned char *comp; /* only used with decompression - malloc()ed */ 366 /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */ 367 /*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ 368 } SSL3_RECORD; 369 370 typedef struct ssl3_buffer_st 371 { 372 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, 373 * see ssl3_setup_buffers() */ 374 size_t len; /* buffer size */ 375 int offset; /* where to 'copy from' */ 376 int left; /* how many bytes left */ 377 } SSL3_BUFFER; 378 379 #endif 380 381 #define SSL3_CT_RSA_SIGN 1 382 #define SSL3_CT_DSS_SIGN 2 383 #define SSL3_CT_RSA_FIXED_DH 3 384 #define SSL3_CT_DSS_FIXED_DH 4 385 #define SSL3_CT_RSA_EPHEMERAL_DH 5 386 #define SSL3_CT_DSS_EPHEMERAL_DH 6 387 #define SSL3_CT_FORTEZZA_DMS 20 388 /* SSL3_CT_NUMBER is used to size arrays and it must be large 389 * enough to contain all of the cert types defined either for 390 * SSLv3 and TLSv1. 391 */ 392 #define SSL3_CT_NUMBER 9 393 394 395 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001 396 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002 397 #define SSL3_FLAGS_POP_BUFFER 0x0004 398 #define TLS1_FLAGS_TLS_PADDING_BUG 0x0008 399 #define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010 400 #define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020 401 402 /* SSL3_FLAGS_SGC_RESTART_DONE is set when we 403 * restart a handshake because of MS SGC and so prevents us 404 * from restarting the handshake in a loop. It's reset on a 405 * renegotiation, so effectively limits the client to one restart 406 * per negotiation. This limits the possibility of a DDoS 407 * attack where the client handshakes in a loop using SGC to 408 * restart. Servers which permit renegotiation can still be 409 * effected, but we can't prevent that. 410 */ 411 #define SSL3_FLAGS_SGC_RESTART_DONE 0x0040 412 413 #ifndef OPENSSL_NO_SSL_INTERN 414 415 typedef struct ssl3_state_st 416 { 417 long flags; 418 int delay_buf_pop_ret; 419 420 unsigned char read_sequence[8]; 421 int read_mac_secret_size; 422 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 423 unsigned char write_sequence[8]; 424 int write_mac_secret_size; 425 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 426 427 unsigned char server_random[SSL3_RANDOM_SIZE]; 428 unsigned char client_random[SSL3_RANDOM_SIZE]; 429 430 /* flags for countermeasure against known-IV weakness */ 431 int need_empty_fragments; 432 int empty_fragment_done; 433 434 /* The value of 'extra' when the buffers were initialized */ 435 int init_extra; 436 437 SSL3_BUFFER rbuf; /* read IO goes into here */ 438 SSL3_BUFFER wbuf; /* write IO goes into here */ 439 440 SSL3_RECORD rrec; /* each decoded record goes in here */ 441 SSL3_RECORD wrec; /* goes out from here */ 442 443 /* storage for Alert/Handshake protocol data received but not 444 * yet processed by ssl3_read_bytes: */ 445 unsigned char alert_fragment[2]; 446 unsigned int alert_fragment_len; 447 unsigned char handshake_fragment[4]; 448 unsigned int handshake_fragment_len; 449 450 /* partial write - check the numbers match */ 451 unsigned int wnum; /* number of bytes sent so far */ 452 int wpend_tot; /* number bytes written */ 453 int wpend_type; 454 int wpend_ret; /* number of bytes submitted */ 455 const unsigned char *wpend_buf; 456 457 /* used during startup, digest all incoming/outgoing packets */ 458 BIO *handshake_buffer; 459 /* When set of handshake digests is determined, buffer is hashed 460 * and freed and MD_CTX-es for all required digests are stored in 461 * this array */ 462 EVP_MD_CTX **handshake_dgst; 463 /* this is set whenerver we see a change_cipher_spec message 464 * come in when we are not looking for one */ 465 int change_cipher_spec; 466 467 int warn_alert; 468 int fatal_alert; 469 /* we allow one fatal and one warning alert to be outstanding, 470 * send close alert via the warning alert */ 471 int alert_dispatch; 472 unsigned char send_alert[2]; 473 474 /* This flag is set when we should renegotiate ASAP, basically when 475 * there is no more data in the read or write buffers */ 476 int renegotiate; 477 int total_renegotiations; 478 int num_renegotiations; 479 480 int in_read_app_data; 481 482 /* Opaque PRF input as used for the current handshake. 483 * These fields are used only if TLSEXT_TYPE_opaque_prf_input is defined 484 * (otherwise, they are merely present to improve binary compatibility) */ 485 void *client_opaque_prf_input; 486 size_t client_opaque_prf_input_len; 487 void *server_opaque_prf_input; 488 size_t server_opaque_prf_input_len; 489 490 struct { 491 /* actually only needs to be 16+20 */ 492 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; 493 494 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 495 unsigned char finish_md[EVP_MAX_MD_SIZE*2]; 496 int finish_md_len; 497 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; 498 int peer_finish_md_len; 499 500 unsigned long message_size; 501 int message_type; 502 503 /* used to hold the new cipher we are going to use */ 504 const SSL_CIPHER *new_cipher; 505 #ifndef OPENSSL_NO_DH 506 DH *dh; 507 #endif 508 509 #ifndef OPENSSL_NO_ECDH 510 EC_KEY *ecdh; /* holds short lived ECDH key */ 511 #endif 512 513 /* used when SSL_ST_FLUSH_DATA is entered */ 514 int next_state; 515 516 int reuse_message; 517 518 /* used for certificate requests */ 519 int cert_req; 520 int ctype_num; 521 char ctype[SSL3_CT_NUMBER]; 522 STACK_OF(X509_NAME) *ca_names; 523 524 int use_rsa_tmp; 525 526 int key_block_length; 527 unsigned char *key_block; 528 529 const EVP_CIPHER *new_sym_enc; 530 const EVP_MD *new_hash; 531 int new_mac_pkey_type; 532 int new_mac_secret_size; 533 #ifndef OPENSSL_NO_COMP 534 const SSL_COMP *new_compression; 535 #else 536 char *new_compression; 537 #endif 538 int cert_request; 539 } tmp; 540 541 /* Connection binding to prevent renegotiation attacks */ 542 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 543 unsigned char previous_client_finished_len; 544 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 545 unsigned char previous_server_finished_len; 546 int send_connection_binding; /* TODOEKR */ 547 548 #ifndef OPENSSL_NO_NEXTPROTONEG 549 /* Set if we saw the Next Protocol Negotiation extension from our peer. */ 550 int next_proto_neg_seen; 551 #endif 552 } SSL3_STATE; 553 554 #endif 555 556 /* SSLv3 */ 557 /*client */ 558 /* extra state */ 559 #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT) 560 #define SSL3_ST_CUTTHROUGH_COMPLETE (0x101|SSL_ST_CONNECT) 561 #ifndef OPENSSL_NO_SCTP 562 #define DTLS1_SCTP_ST_CW_WRITE_SOCK (0x310|SSL_ST_CONNECT) 563 #define DTLS1_SCTP_ST_CR_READ_SOCK (0x320|SSL_ST_CONNECT) 564 #endif 565 /* write to server */ 566 #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT) 567 #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT) 568 /* read from server */ 569 #define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT) 570 #define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT) 571 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT) 572 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT) 573 #define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT) 574 #define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT) 575 #define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT) 576 #define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT) 577 #define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT) 578 #define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT) 579 #define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT) 580 #define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT) 581 /* write to server */ 582 #define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT) 583 #define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT) 584 #define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT) 585 #define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT) 586 #define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT) 587 #define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT) 588 #define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT) 589 #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT) 590 #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT) 591 #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT) 592 #define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT) 593 #define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT) 594 #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT) 595 #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT) 596 /* read from server */ 597 #define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT) 598 #define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT) 599 #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT) 600 #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT) 601 #define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT) 602 #define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT) 603 #define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT) 604 #define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT) 605 606 /* server */ 607 /* extra state */ 608 #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT) 609 #ifndef OPENSSL_NO_SCTP 610 #define DTLS1_SCTP_ST_SW_WRITE_SOCK (0x310|SSL_ST_ACCEPT) 611 #define DTLS1_SCTP_ST_SR_READ_SOCK (0x320|SSL_ST_ACCEPT) 612 #endif 613 /* read from client */ 614 /* Do not change the number values, they do matter */ 615 #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT) 616 #define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT) 617 #define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT) 618 /* write to client */ 619 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT) 620 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT) 621 #define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT) 622 #define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT) 623 #define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT) 624 #define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT) 625 #define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT) 626 #define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT) 627 #define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT) 628 #define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT) 629 #define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT) 630 #define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT) 631 #define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT) 632 #define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT) 633 #define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT) 634 /* read from client */ 635 #define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT) 636 #define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT) 637 #define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT) 638 #define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT) 639 #define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT) 640 #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT) 641 #define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT) 642 #define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT) 643 #define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT) 644 #define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT) 645 #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT) 646 #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT) 647 /* write to client */ 648 #define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT) 649 #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT) 650 #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT) 651 #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT) 652 #define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT) 653 #define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT) 654 #define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT) 655 #define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT) 656 657 #define SSL3_MT_HELLO_REQUEST 0 658 #define SSL3_MT_CLIENT_HELLO 1 659 #define SSL3_MT_SERVER_HELLO 2 660 #define SSL3_MT_NEWSESSION_TICKET 4 661 #define SSL3_MT_CERTIFICATE 11 662 #define SSL3_MT_SERVER_KEY_EXCHANGE 12 663 #define SSL3_MT_CERTIFICATE_REQUEST 13 664 #define SSL3_MT_SERVER_DONE 14 665 #define SSL3_MT_CERTIFICATE_VERIFY 15 666 #define SSL3_MT_CLIENT_KEY_EXCHANGE 16 667 #define SSL3_MT_FINISHED 20 668 #define SSL3_MT_CERTIFICATE_STATUS 22 669 #define SSL3_MT_NEXT_PROTO 67 670 #define DTLS1_MT_HELLO_VERIFY_REQUEST 3 671 672 673 #define SSL3_MT_CCS 1 674 675 /* These are used when changing over to a new cipher */ 676 #define SSL3_CC_READ 0x01 677 #define SSL3_CC_WRITE 0x02 678 #define SSL3_CC_CLIENT 0x10 679 #define SSL3_CC_SERVER 0x20 680 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE) 681 #define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ) 682 #define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ) 683 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE) 684 685 #ifdef __cplusplus 686 } 687 #endif 688 #endif 689
