t1_enc.c revision 1.138
1/* $OpenBSD: t1_enc.c,v 1.138 2021/04/19 17:26:39 jsing Exp $ */ 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) 1998-2007 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 2005 Nokia. All rights reserved. 113 * 114 * The portions of the attached software ("Contribution") is developed by 115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 116 * license. 117 * 118 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 119 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 120 * support (see RFC 4279) to OpenSSL. 121 * 122 * No patent licenses or other rights except those expressly stated in 123 * the OpenSSL open source license shall be deemed granted or received 124 * expressly, by implication, estoppel, or otherwise. 125 * 126 * No assurances are provided by Nokia that the Contribution does not 127 * infringe the patent or other intellectual property rights of any third 128 * party or that the license provides you with all the necessary rights 129 * to make use of the Contribution. 130 * 131 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 132 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 133 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 134 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 135 * OTHERWISE. 136 */ 137 138#include <limits.h> 139#include <stdio.h> 140 141#include "ssl_locl.h" 142 143#include <openssl/evp.h> 144#include <openssl/hmac.h> 145#include <openssl/md5.h> 146 147int tls1_PRF(SSL *s, const unsigned char *secret, size_t secret_len, 148 const void *seed1, size_t seed1_len, const void *seed2, size_t seed2_len, 149 const void *seed3, size_t seed3_len, const void *seed4, size_t seed4_len, 150 const void *seed5, size_t seed5_len, unsigned char *out, size_t out_len); 151 152void 153tls1_cleanup_key_block(SSL *s) 154{ 155 freezero(S3I(s)->hs.tls12.key_block, S3I(s)->hs.tls12.key_block_len); 156 S3I(s)->hs.tls12.key_block = NULL; 157 S3I(s)->hs.tls12.key_block_len = 0; 158} 159 160/* 161 * TLS P_hash() data expansion function - see RFC 5246, section 5. 162 */ 163static int 164tls1_P_hash(const EVP_MD *md, const unsigned char *secret, size_t secret_len, 165 const void *seed1, size_t seed1_len, const void *seed2, size_t seed2_len, 166 const void *seed3, size_t seed3_len, const void *seed4, size_t seed4_len, 167 const void *seed5, size_t seed5_len, unsigned char *out, size_t out_len) 168{ 169 unsigned char A1[EVP_MAX_MD_SIZE], hmac[EVP_MAX_MD_SIZE]; 170 size_t A1_len, hmac_len; 171 EVP_MD_CTX ctx; 172 EVP_PKEY *mac_key; 173 int ret = 0; 174 int chunk; 175 size_t i; 176 177 chunk = EVP_MD_size(md); 178 OPENSSL_assert(chunk >= 0); 179 180 EVP_MD_CTX_init(&ctx); 181 182 mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, secret, secret_len); 183 if (!mac_key) 184 goto err; 185 if (!EVP_DigestSignInit(&ctx, NULL, md, NULL, mac_key)) 186 goto err; 187 if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len)) 188 goto err; 189 if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len)) 190 goto err; 191 if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len)) 192 goto err; 193 if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len)) 194 goto err; 195 if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len)) 196 goto err; 197 if (!EVP_DigestSignFinal(&ctx, A1, &A1_len)) 198 goto err; 199 200 for (;;) { 201 if (!EVP_DigestSignInit(&ctx, NULL, md, NULL, mac_key)) 202 goto err; 203 if (!EVP_DigestSignUpdate(&ctx, A1, A1_len)) 204 goto err; 205 if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len)) 206 goto err; 207 if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len)) 208 goto err; 209 if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len)) 210 goto err; 211 if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len)) 212 goto err; 213 if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len)) 214 goto err; 215 if (!EVP_DigestSignFinal(&ctx, hmac, &hmac_len)) 216 goto err; 217 218 if (hmac_len > out_len) 219 hmac_len = out_len; 220 221 for (i = 0; i < hmac_len; i++) 222 out[i] ^= hmac[i]; 223 224 out += hmac_len; 225 out_len -= hmac_len; 226 227 if (out_len == 0) 228 break; 229 230 if (!EVP_DigestSignInit(&ctx, NULL, md, NULL, mac_key)) 231 goto err; 232 if (!EVP_DigestSignUpdate(&ctx, A1, A1_len)) 233 goto err; 234 if (!EVP_DigestSignFinal(&ctx, A1, &A1_len)) 235 goto err; 236 } 237 ret = 1; 238 239 err: 240 EVP_PKEY_free(mac_key); 241 EVP_MD_CTX_cleanup(&ctx); 242 243 explicit_bzero(A1, sizeof(A1)); 244 explicit_bzero(hmac, sizeof(hmac)); 245 246 return ret; 247} 248 249int 250tls1_PRF(SSL *s, const unsigned char *secret, size_t secret_len, 251 const void *seed1, size_t seed1_len, const void *seed2, size_t seed2_len, 252 const void *seed3, size_t seed3_len, const void *seed4, size_t seed4_len, 253 const void *seed5, size_t seed5_len, unsigned char *out, size_t out_len) 254{ 255 const EVP_MD *md; 256 size_t half_len; 257 258 memset(out, 0, out_len); 259 260 if (!ssl_get_handshake_evp_md(s, &md)) 261 return (0); 262 263 if (md->type == NID_md5_sha1) { 264 /* 265 * Partition secret between MD5 and SHA1, then XOR result. 266 * If the secret length is odd, a one byte overlap is used. 267 */ 268 half_len = secret_len - (secret_len / 2); 269 if (!tls1_P_hash(EVP_md5(), secret, half_len, seed1, seed1_len, 270 seed2, seed2_len, seed3, seed3_len, seed4, seed4_len, 271 seed5, seed5_len, out, out_len)) 272 return (0); 273 274 secret += secret_len - half_len; 275 if (!tls1_P_hash(EVP_sha1(), secret, half_len, seed1, seed1_len, 276 seed2, seed2_len, seed3, seed3_len, seed4, seed4_len, 277 seed5, seed5_len, out, out_len)) 278 return (0); 279 280 return (1); 281 } 282 283 if (!tls1_P_hash(md, secret, secret_len, seed1, seed1_len, 284 seed2, seed2_len, seed3, seed3_len, seed4, seed4_len, 285 seed5, seed5_len, out, out_len)) 286 return (0); 287 288 return (1); 289} 290 291static int 292tls1_generate_key_block(SSL *s, uint8_t *key_block, size_t key_block_len) 293{ 294 return tls1_PRF(s, 295 s->session->master_key, s->session->master_key_length, 296 TLS_MD_KEY_EXPANSION_CONST, TLS_MD_KEY_EXPANSION_CONST_SIZE, 297 s->s3->server_random, SSL3_RANDOM_SIZE, 298 s->s3->client_random, SSL3_RANDOM_SIZE, 299 NULL, 0, NULL, 0, key_block, key_block_len); 300} 301 302int 303tls1_change_cipher_state(SSL *s, int which) 304{ 305 const unsigned char *client_write_mac_secret, *server_write_mac_secret; 306 const unsigned char *client_write_key, *server_write_key; 307 const unsigned char *client_write_iv, *server_write_iv; 308 const unsigned char *mac_secret, *key, *iv; 309 int mac_secret_size, key_len, iv_len; 310 unsigned char *key_block; 311 const EVP_CIPHER *cipher; 312 const EVP_AEAD *aead; 313 char is_read, use_client_keys; 314 315 aead = tls12_record_layer_aead(s->internal->rl); 316 cipher = tls12_record_layer_cipher(s->internal->rl); 317 318 /* 319 * is_read is true if we have just read a ChangeCipherSpec message, 320 * that is we need to update the read cipherspec. Otherwise we have 321 * just written one. 322 */ 323 is_read = (which & SSL3_CC_READ) != 0; 324 325 /* 326 * use_client_keys is true if we wish to use the keys for the "client 327 * write" direction. This is the case if we're a client sending a 328 * ChangeCipherSpec, or a server reading a client's ChangeCipherSpec. 329 */ 330 use_client_keys = ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || 331 (which == SSL3_CHANGE_CIPHER_SERVER_READ)); 332 333 if (aead != NULL) { 334 key_len = EVP_AEAD_key_length(aead); 335 iv_len = SSL_CIPHER_AEAD_FIXED_NONCE_LEN(S3I(s)->hs.cipher); 336 } else { 337 key_len = EVP_CIPHER_key_length(cipher); 338 iv_len = EVP_CIPHER_iv_length(cipher); 339 } 340 341 mac_secret_size = S3I(s)->hs.tls12.mac_secret_size; 342 343 key_block = S3I(s)->hs.tls12.key_block; 344 client_write_mac_secret = key_block; 345 key_block += mac_secret_size; 346 server_write_mac_secret = key_block; 347 key_block += mac_secret_size; 348 client_write_key = key_block; 349 key_block += key_len; 350 server_write_key = key_block; 351 key_block += key_len; 352 client_write_iv = key_block; 353 key_block += iv_len; 354 server_write_iv = key_block; 355 key_block += iv_len; 356 357 if (use_client_keys) { 358 mac_secret = client_write_mac_secret; 359 key = client_write_key; 360 iv = client_write_iv; 361 } else { 362 mac_secret = server_write_mac_secret; 363 key = server_write_key; 364 iv = server_write_iv; 365 } 366 367 if (key_block - S3I(s)->hs.tls12.key_block != 368 S3I(s)->hs.tls12.key_block_len) { 369 SSLerror(s, ERR_R_INTERNAL_ERROR); 370 goto err; 371 } 372 373 if (is_read) { 374 if (!tls12_record_layer_change_read_cipher_state(s->internal->rl, 375 mac_secret, mac_secret_size, key, key_len, iv, iv_len)) 376 goto err; 377 tls12_record_layer_read_cipher_hash(s->internal->rl, 378 &s->enc_read_ctx, &s->read_hash); 379 } else { 380 if (!tls12_record_layer_change_write_cipher_state(s->internal->rl, 381 mac_secret, mac_secret_size, key, key_len, iv, iv_len)) 382 goto err; 383 } 384 return (1); 385 386 err: 387 return (0); 388} 389 390int 391tls1_setup_key_block(SSL *s) 392{ 393 unsigned char *key_block; 394 int mac_type = NID_undef, mac_secret_size = 0; 395 size_t key_block_len; 396 int key_len, iv_len; 397 const EVP_CIPHER *cipher = NULL; 398 const EVP_AEAD *aead = NULL; 399 const EVP_MD *handshake_hash = NULL; 400 const EVP_MD *mac_hash = NULL; 401 int ret = 0; 402 403 if (S3I(s)->hs.tls12.key_block_len != 0) 404 return (1); 405 406 if (s->session->cipher && 407 (s->session->cipher->algorithm_mac & SSL_AEAD)) { 408 if (!ssl_cipher_get_evp_aead(s->session, &aead)) { 409 SSLerror(s, SSL_R_CIPHER_OR_HASH_UNAVAILABLE); 410 return (0); 411 } 412 key_len = EVP_AEAD_key_length(aead); 413 iv_len = SSL_CIPHER_AEAD_FIXED_NONCE_LEN(s->session->cipher); 414 } else { 415 if (!ssl_cipher_get_evp(s->session, &cipher, &mac_hash, 416 &mac_type, &mac_secret_size)) { 417 SSLerror(s, SSL_R_CIPHER_OR_HASH_UNAVAILABLE); 418 return (0); 419 } 420 key_len = EVP_CIPHER_key_length(cipher); 421 iv_len = EVP_CIPHER_iv_length(cipher); 422 } 423 424 if (!ssl_get_handshake_evp_md(s, &handshake_hash)) 425 return (0); 426 427 S3I(s)->hs.tls12.mac_secret_size = mac_secret_size; 428 429 tls12_record_layer_set_aead(s->internal->rl, aead); 430 tls12_record_layer_set_cipher_hash(s->internal->rl, cipher, 431 handshake_hash, mac_hash); 432 433 tls1_cleanup_key_block(s); 434 435 if ((key_block = reallocarray(NULL, mac_secret_size + key_len + iv_len, 436 2)) == NULL) { 437 SSLerror(s, ERR_R_MALLOC_FAILURE); 438 goto err; 439 } 440 key_block_len = (mac_secret_size + key_len + iv_len) * 2; 441 442 S3I(s)->hs.tls12.key_block_len = key_block_len; 443 S3I(s)->hs.tls12.key_block = key_block; 444 445 if (!tls1_generate_key_block(s, key_block, key_block_len)) 446 goto err; 447 448 if (!(s->internal->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS) && 449 s->method->internal->version <= TLS1_VERSION) { 450 /* 451 * Enable vulnerability countermeasure for CBC ciphers with 452 * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt) 453 */ 454 S3I(s)->need_empty_fragments = 1; 455 456 if (s->session->cipher != NULL) { 457 if (s->session->cipher->algorithm_enc == SSL_eNULL) 458 S3I(s)->need_empty_fragments = 0; 459 460#ifndef OPENSSL_NO_RC4 461 if (s->session->cipher->algorithm_enc == SSL_RC4) 462 S3I(s)->need_empty_fragments = 0; 463#endif 464 } 465 } 466 467 ret = 1; 468 469 err: 470 return (ret); 471} 472 473int 474tls1_final_finish_mac(SSL *s, const char *str, int str_len, unsigned char *out) 475{ 476 unsigned char buf[EVP_MAX_MD_SIZE]; 477 size_t hash_len; 478 479 if (str_len < 0) 480 return 0; 481 482 if (!tls1_transcript_hash_value(s, buf, sizeof(buf), &hash_len)) 483 return 0; 484 485 if (!tls1_PRF(s, s->session->master_key, s->session->master_key_length, 486 str, str_len, buf, hash_len, NULL, 0, NULL, 0, NULL, 0, 487 out, TLS1_FINISH_MAC_LENGTH)) 488 return 0; 489 490 return TLS1_FINISH_MAC_LENGTH; 491} 492 493int 494tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, 495 int len) 496{ 497 if (len < 0) 498 return 0; 499 500 if (!tls1_PRF(s, p, len, 501 TLS_MD_MASTER_SECRET_CONST, TLS_MD_MASTER_SECRET_CONST_SIZE, 502 s->s3->client_random, SSL3_RANDOM_SIZE, NULL, 0, 503 s->s3->server_random, SSL3_RANDOM_SIZE, NULL, 0, 504 s->session->master_key, SSL_MAX_MASTER_KEY_LENGTH)) 505 return 0; 506 507 return (SSL_MAX_MASTER_KEY_LENGTH); 508} 509 510int 511tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, 512 const char *label, size_t llen, const unsigned char *context, 513 size_t contextlen, int use_context) 514{ 515 unsigned char *val = NULL; 516 size_t vallen, currentvalpos; 517 int rv; 518 519 if (!SSL_is_init_finished(s)) { 520 SSLerror(s, SSL_R_BAD_STATE); 521 return 0; 522 } 523 524 /* construct PRF arguments 525 * we construct the PRF argument ourself rather than passing separate 526 * values into the TLS PRF to ensure that the concatenation of values 527 * does not create a prohibited label. 528 */ 529 vallen = llen + SSL3_RANDOM_SIZE * 2; 530 if (use_context) { 531 vallen += 2 + contextlen; 532 } 533 534 val = malloc(vallen); 535 if (val == NULL) 536 goto err2; 537 currentvalpos = 0; 538 memcpy(val + currentvalpos, (unsigned char *) label, llen); 539 currentvalpos += llen; 540 memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE); 541 currentvalpos += SSL3_RANDOM_SIZE; 542 memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE); 543 currentvalpos += SSL3_RANDOM_SIZE; 544 545 if (use_context) { 546 val[currentvalpos] = (contextlen >> 8) & 0xff; 547 currentvalpos++; 548 val[currentvalpos] = contextlen & 0xff; 549 currentvalpos++; 550 if ((contextlen > 0) || (context != NULL)) { 551 memcpy(val + currentvalpos, context, contextlen); 552 } 553 } 554 555 /* disallow prohibited labels 556 * note that SSL3_RANDOM_SIZE > max(prohibited label len) = 557 * 15, so size of val > max(prohibited label len) = 15 and the 558 * comparisons won't have buffer overflow 559 */ 560 if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST, 561 TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0) 562 goto err1; 563 if (memcmp(val, TLS_MD_SERVER_FINISH_CONST, 564 TLS_MD_SERVER_FINISH_CONST_SIZE) == 0) 565 goto err1; 566 if (memcmp(val, TLS_MD_MASTER_SECRET_CONST, 567 TLS_MD_MASTER_SECRET_CONST_SIZE) == 0) 568 goto err1; 569 if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST, 570 TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0) 571 goto err1; 572 573 rv = tls1_PRF(s, s->session->master_key, s->session->master_key_length, 574 val, vallen, NULL, 0, NULL, 0, NULL, 0, NULL, 0, out, olen); 575 576 goto ret; 577err1: 578 SSLerror(s, SSL_R_TLS_ILLEGAL_EXPORTER_LABEL); 579 rv = 0; 580 goto ret; 581err2: 582 SSLerror(s, ERR_R_MALLOC_FAILURE); 583 rv = 0; 584ret: 585 free(val); 586 587 return (rv); 588} 589 590int 591tls1_alert_code(int code) 592{ 593 switch (code) { 594 case SSL_AD_CLOSE_NOTIFY: 595 return (SSL3_AD_CLOSE_NOTIFY); 596 case SSL_AD_UNEXPECTED_MESSAGE: 597 return (SSL3_AD_UNEXPECTED_MESSAGE); 598 case SSL_AD_BAD_RECORD_MAC: 599 return (SSL3_AD_BAD_RECORD_MAC); 600 case SSL_AD_DECRYPTION_FAILED: 601 return (TLS1_AD_DECRYPTION_FAILED); 602 case SSL_AD_RECORD_OVERFLOW: 603 return (TLS1_AD_RECORD_OVERFLOW); 604 case SSL_AD_DECOMPRESSION_FAILURE: 605 return (SSL3_AD_DECOMPRESSION_FAILURE); 606 case SSL_AD_HANDSHAKE_FAILURE: 607 return (SSL3_AD_HANDSHAKE_FAILURE); 608 case SSL_AD_NO_CERTIFICATE: 609 return (-1); 610 case SSL_AD_BAD_CERTIFICATE: 611 return (SSL3_AD_BAD_CERTIFICATE); 612 case SSL_AD_UNSUPPORTED_CERTIFICATE: 613 return (SSL3_AD_UNSUPPORTED_CERTIFICATE); 614 case SSL_AD_CERTIFICATE_REVOKED: 615 return (SSL3_AD_CERTIFICATE_REVOKED); 616 case SSL_AD_CERTIFICATE_EXPIRED: 617 return (SSL3_AD_CERTIFICATE_EXPIRED); 618 case SSL_AD_CERTIFICATE_UNKNOWN: 619 return (SSL3_AD_CERTIFICATE_UNKNOWN); 620 case SSL_AD_ILLEGAL_PARAMETER: 621 return (SSL3_AD_ILLEGAL_PARAMETER); 622 case SSL_AD_UNKNOWN_CA: 623 return (TLS1_AD_UNKNOWN_CA); 624 case SSL_AD_ACCESS_DENIED: 625 return (TLS1_AD_ACCESS_DENIED); 626 case SSL_AD_DECODE_ERROR: 627 return (TLS1_AD_DECODE_ERROR); 628 case SSL_AD_DECRYPT_ERROR: 629 return (TLS1_AD_DECRYPT_ERROR); 630 case SSL_AD_EXPORT_RESTRICTION: 631 return (TLS1_AD_EXPORT_RESTRICTION); 632 case SSL_AD_PROTOCOL_VERSION: 633 return (TLS1_AD_PROTOCOL_VERSION); 634 case SSL_AD_INSUFFICIENT_SECURITY: 635 return (TLS1_AD_INSUFFICIENT_SECURITY); 636 case SSL_AD_INTERNAL_ERROR: 637 return (TLS1_AD_INTERNAL_ERROR); 638 case SSL_AD_INAPPROPRIATE_FALLBACK: 639 return(TLS1_AD_INAPPROPRIATE_FALLBACK); 640 case SSL_AD_USER_CANCELLED: 641 return (TLS1_AD_USER_CANCELLED); 642 case SSL_AD_NO_RENEGOTIATION: 643 return (TLS1_AD_NO_RENEGOTIATION); 644 case SSL_AD_UNSUPPORTED_EXTENSION: 645 return (TLS1_AD_UNSUPPORTED_EXTENSION); 646 case SSL_AD_CERTIFICATE_UNOBTAINABLE: 647 return (TLS1_AD_CERTIFICATE_UNOBTAINABLE); 648 case SSL_AD_UNRECOGNIZED_NAME: 649 return (TLS1_AD_UNRECOGNIZED_NAME); 650 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: 651 return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE); 652 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: 653 return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE); 654 case SSL_AD_UNKNOWN_PSK_IDENTITY: 655 return (TLS1_AD_UNKNOWN_PSK_IDENTITY); 656 default: 657 return (-1); 658 } 659} 660