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 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@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 23 325 326 #define SSL3_AL_WARNING 1 327 #define SSL3_AL_FATAL 2 328 329 #define SSL3_AD_CLOSE_NOTIFY 0 330 #define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */ 331 #define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */ 332 #define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */ 333 #define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */ 334 #define SSL3_AD_NO_CERTIFICATE 41 335 #define SSL3_AD_BAD_CERTIFICATE 42 336 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43 337 #define SSL3_AD_CERTIFICATE_REVOKED 44 338 #define SSL3_AD_CERTIFICATE_EXPIRED 45 339 #define SSL3_AD_CERTIFICATE_UNKNOWN 46 340 #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */ 341 342 typedef struct ssl3_record_st 343 { 344 /*r */ int type; /* type of record */ 345 /*rw*/ unsigned int length; /* How many bytes available */ 346 /*r */ unsigned int off; /* read/write offset into 'buf' */ 347 /*rw*/ unsigned char *data; /* pointer to the record data */ 348 /*rw*/ unsigned char *input; /* where the decode bytes are */ 349 /*r */ unsigned char *comp; /* only used with decompression - malloc()ed */ 350 /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */ 351 /*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ 352 } SSL3_RECORD; 353 354 typedef struct ssl3_buffer_st 355 { 356 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, 357 * see ssl3_setup_buffers() */ 358 size_t len; /* buffer size */ 359 int offset; /* where to 'copy from' */ 360 int left; /* how many bytes left */ 361 } SSL3_BUFFER; 362 363 #define SSL3_CT_RSA_SIGN 1 364 #define SSL3_CT_DSS_SIGN 2 365 #define SSL3_CT_RSA_FIXED_DH 3 366 #define SSL3_CT_DSS_FIXED_DH 4 367 #define SSL3_CT_RSA_EPHEMERAL_DH 5 368 #define SSL3_CT_DSS_EPHEMERAL_DH 6 369 #define SSL3_CT_FORTEZZA_DMS 20 370 /* SSL3_CT_NUMBER is used to size arrays and it must be large 371 * enough to contain all of the cert types defined either for 372 * SSLv3 and TLSv1. 373 */ 374 #define SSL3_CT_NUMBER 9 375 376 377 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001 378 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002 379 #define SSL3_FLAGS_POP_BUFFER 0x0004 380 #define TLS1_FLAGS_TLS_PADDING_BUG 0x0008 381 #define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010 382 383 /* SSL3_FLAGS_SGC_RESTART_DONE is set when we 384 * restart a handshake because of MS SGC and so prevents us 385 * from restarting the handshake in a loop. It's reset on a 386 * renegotiation, so effectively limits the client to one restart 387 * per negotiation. This limits the possibility of a DDoS 388 * attack where the client handshakes in a loop using SGC to 389 * restart. Servers which permit renegotiation can still be 390 * effected, but we can't prevent that. 391 */ 392 #define SSL3_FLAGS_SGC_RESTART_DONE 0x0040 393 394 typedef struct ssl3_state_st 395 { 396 long flags; 397 int delay_buf_pop_ret; 398 399 unsigned char read_sequence[8]; 400 int read_mac_secret_size; 401 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 402 unsigned char write_sequence[8]; 403 int write_mac_secret_size; 404 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 405 406 unsigned char server_random[SSL3_RANDOM_SIZE]; 407 unsigned char client_random[SSL3_RANDOM_SIZE]; 408 409 /* flags for countermeasure against known-IV weakness */ 410 int need_empty_fragments; 411 int empty_fragment_done; 412 413 /* The value of 'extra' when the buffers were initialized */ 414 int init_extra; 415 416 SSL3_BUFFER rbuf; /* read IO goes into here */ 417 SSL3_BUFFER wbuf; /* write IO goes into here */ 418 419 SSL3_RECORD rrec; /* each decoded record goes in here */ 420 SSL3_RECORD wrec; /* goes out from here */ 421 422 /* storage for Alert/Handshake protocol data received but not 423 * yet processed by ssl3_read_bytes: */ 424 unsigned char alert_fragment[2]; 425 unsigned int alert_fragment_len; 426 unsigned char handshake_fragment[4]; 427 unsigned int handshake_fragment_len; 428 429 /* partial write - check the numbers match */ 430 unsigned int wnum; /* number of bytes sent so far */ 431 int wpend_tot; /* number bytes written */ 432 int wpend_type; 433 int wpend_ret; /* number of bytes submitted */ 434 const unsigned char *wpend_buf; 435 436 /* used during startup, digest all incoming/outgoing packets */ 437 BIO *handshake_buffer; 438 /* When set of handshake digests is determined, buffer is hashed 439 * and freed and MD_CTX-es for all required digests are stored in 440 * this array */ 441 EVP_MD_CTX **handshake_dgst; 442 /* this is set whenerver we see a change_cipher_spec message 443 * come in when we are not looking for one */ 444 int change_cipher_spec; 445 446 int warn_alert; 447 int fatal_alert; 448 /* we allow one fatal and one warning alert to be outstanding, 449 * send close alert via the warning alert */ 450 int alert_dispatch; 451 unsigned char send_alert[2]; 452 453 /* This flag is set when we should renegotiate ASAP, basically when 454 * there is no more data in the read or write buffers */ 455 int renegotiate; 456 int total_renegotiations; 457 int num_renegotiations; 458 459 int in_read_app_data; 460 461 /* Opaque PRF input as used for the current handshake. 462 * These fields are used only if TLSEXT_TYPE_opaque_prf_input is defined 463 * (otherwise, they are merely present to improve binary compatibility) */ 464 void *client_opaque_prf_input; 465 size_t client_opaque_prf_input_len; 466 void *server_opaque_prf_input; 467 size_t server_opaque_prf_input_len; 468 469 struct { 470 /* actually only needs to be 16+20 */ 471 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; 472 473 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 474 unsigned char finish_md[EVP_MAX_MD_SIZE*2]; 475 int finish_md_len; 476 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; 477 int peer_finish_md_len; 478 479 unsigned long message_size; 480 int message_type; 481 482 /* used to hold the new cipher we are going to use */ 483 const SSL_CIPHER *new_cipher; 484 #ifndef OPENSSL_NO_DH 485 DH *dh; 486 #endif 487 488 #ifndef OPENSSL_NO_ECDH 489 EC_KEY *ecdh; /* holds short lived ECDH key */ 490 #endif 491 492 /* used when SSL_ST_FLUSH_DATA is entered */ 493 int next_state; 494 495 int reuse_message; 496 497 /* used for certificate requests */ 498 int cert_req; 499 int ctype_num; 500 char ctype[SSL3_CT_NUMBER]; 501 STACK_OF(X509_NAME) *ca_names; 502 503 int use_rsa_tmp; 504 505 int key_block_length; 506 unsigned char *key_block; 507 508 const EVP_CIPHER *new_sym_enc; 509 const EVP_MD *new_hash; 510 int new_mac_pkey_type; 511 int new_mac_secret_size; 512 #ifndef OPENSSL_NO_COMP 513 const SSL_COMP *new_compression; 514 #else 515 char *new_compression; 516 #endif 517 int cert_request; 518 } tmp; 519 520 /* Connection binding to prevent renegotiation attacks */ 521 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 522 unsigned char previous_client_finished_len; 523 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 524 unsigned char previous_server_finished_len; 525 int send_connection_binding; /* TODOEKR */ 526 } SSL3_STATE; 527 528 529 /* SSLv3 */ 530 /*client */ 531 /* extra state */ 532 #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT) 533 /* write to server */ 534 #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT) 535 #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT) 536 /* read from server */ 537 #define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT) 538 #define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT) 539 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT) 540 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT) 541 #define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT) 542 #define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT) 543 #define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT) 544 #define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT) 545 #define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT) 546 #define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT) 547 #define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT) 548 #define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT) 549 /* write to server */ 550 #define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT) 551 #define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT) 552 #define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT) 553 #define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT) 554 #define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT) 555 #define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT) 556 #define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT) 557 #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT) 558 #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT) 559 #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT) 560 #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT) 561 #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT) 562 /* read from server */ 563 #define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT) 564 #define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT) 565 #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT) 566 #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT) 567 #define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT) 568 #define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT) 569 #define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT) 570 #define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT) 571 572 /* server */ 573 /* extra state */ 574 #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT) 575 /* read from client */ 576 /* Do not change the number values, they do matter */ 577 #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT) 578 #define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT) 579 #define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT) 580 /* write to client */ 581 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT) 582 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT) 583 #define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT) 584 #define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT) 585 #define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT) 586 #define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT) 587 #define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT) 588 #define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT) 589 #define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT) 590 #define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT) 591 #define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT) 592 #define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT) 593 #define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT) 594 #define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT) 595 #define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT) 596 /* read from client */ 597 #define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT) 598 #define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT) 599 #define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT) 600 #define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT) 601 #define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT) 602 #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT) 603 #define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT) 604 #define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT) 605 #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT) 606 #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT) 607 /* write to client */ 608 #define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT) 609 #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT) 610 #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT) 611 #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT) 612 #define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT) 613 #define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT) 614 #define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT) 615 #define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT) 616 617 #define SSL3_MT_HELLO_REQUEST 0 618 #define SSL3_MT_CLIENT_HELLO 1 619 #define SSL3_MT_SERVER_HELLO 2 620 #define SSL3_MT_NEWSESSION_TICKET 4 621 #define SSL3_MT_CERTIFICATE 11 622 #define SSL3_MT_SERVER_KEY_EXCHANGE 12 623 #define SSL3_MT_CERTIFICATE_REQUEST 13 624 #define SSL3_MT_SERVER_DONE 14 625 #define SSL3_MT_CERTIFICATE_VERIFY 15 626 #define SSL3_MT_CLIENT_KEY_EXCHANGE 16 627 #define SSL3_MT_FINISHED 20 628 #define SSL3_MT_CERTIFICATE_STATUS 22 629 #define DTLS1_MT_HELLO_VERIFY_REQUEST 3 630 631 632 #define SSL3_MT_CCS 1 633 634 /* These are used when changing over to a new cipher */ 635 #define SSL3_CC_READ 0x01 636 #define SSL3_CC_WRITE 0x02 637 #define SSL3_CC_CLIENT 0x10 638 #define SSL3_CC_SERVER 0x20 639 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE) 640 #define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ) 641 #define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ) 642 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE) 643 644 #ifdef __cplusplus 645 } 646 #endif 647 #endif 648 649