1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
57 /* ====================================================================
58 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * openssl-core@openssl.org.
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com).
110 /* ====================================================================
111 * Copyright 2005 Nokia. All rights reserved.
113 * The portions of the attached software ("Contribution") is developed by
114 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
117 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
118 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
119 * support (see RFC 4279) to OpenSSL.
121 * No patent licenses or other rights except those expressly stated in
122 * the OpenSSL open source license shall be deemed granted or received
123 * expressly, by implication, estoppel, or otherwise.
125 * No assurances are provided by Nokia that the Contribution does not
126 * infringe the patent or other intellectual property rights of any third
127 * party or that the license provides you with all the necessary rights
128 * to make use of the Contribution.
130 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
131 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
132 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
133 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
138 #include "ssl_locl.h"
139 #ifndef OPENSSL_NO_COMP
140 # include <openssl/comp.h>
142 #include <openssl/evp.h>
143 #include <openssl/kdf.h>
144 #include <openssl/rand.h>
146 /* seed1 through seed5 are concatenated */
147 static int tls1_PRF(SSL *s,
148 const void *seed1, int seed1_len,
149 const void *seed2, int seed2_len,
150 const void *seed3, int seed3_len,
151 const void *seed4, int seed4_len,
152 const void *seed5, int seed5_len,
153 const unsigned char *sec, int slen,
154 unsigned char *out, int olen)
156 const EVP_MD *md = ssl_prf_md(s);
157 EVP_PKEY_CTX *pctx = NULL;
160 size_t outlen = olen;
163 /* Should never happen */
164 SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR);
167 pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_TLS1_PRF, NULL);
168 if (pctx == NULL || EVP_PKEY_derive_init(pctx) <= 0
169 || EVP_PKEY_CTX_set_tls1_prf_md(pctx, md) <= 0
170 || EVP_PKEY_CTX_set1_tls1_prf_secret(pctx, sec, slen) <= 0)
173 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed1, seed1_len) <= 0)
175 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed2, seed2_len) <= 0)
177 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed3, seed3_len) <= 0)
179 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed4, seed4_len) <= 0)
181 if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed5, seed5_len) <= 0)
184 if (EVP_PKEY_derive(pctx, out, &outlen) <= 0)
189 EVP_PKEY_CTX_free(pctx);
193 static int tls1_generate_key_block(SSL *s, unsigned char *km, int num)
197 TLS_MD_KEY_EXPANSION_CONST,
198 TLS_MD_KEY_EXPANSION_CONST_SIZE, s->s3->server_random,
199 SSL3_RANDOM_SIZE, s->s3->client_random, SSL3_RANDOM_SIZE,
200 NULL, 0, NULL, 0, s->session->master_key,
201 s->session->master_key_length, km, num);
206 int tls1_change_cipher_state(SSL *s, int which)
208 unsigned char *p, *mac_secret;
209 unsigned char tmp1[EVP_MAX_KEY_LENGTH];
210 unsigned char tmp2[EVP_MAX_KEY_LENGTH];
211 unsigned char iv1[EVP_MAX_IV_LENGTH * 2];
212 unsigned char iv2[EVP_MAX_IV_LENGTH * 2];
213 unsigned char *ms, *key, *iv;
216 #ifndef OPENSSL_NO_COMP
217 const SSL_COMP *comp;
221 int *mac_secret_size;
227 c = s->s3->tmp.new_sym_enc;
228 m = s->s3->tmp.new_hash;
229 mac_type = s->s3->tmp.new_mac_pkey_type;
230 #ifndef OPENSSL_NO_COMP
231 comp = s->s3->tmp.new_compression;
234 if (which & SSL3_CC_READ) {
235 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
236 s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
238 s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
240 if (s->enc_read_ctx != NULL)
242 else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL)
246 * make sure it's intialized in case we exit later with an error
248 EVP_CIPHER_CTX_reset(s->enc_read_ctx);
249 dd = s->enc_read_ctx;
250 mac_ctx = ssl_replace_hash(&s->read_hash, NULL);
253 #ifndef OPENSSL_NO_COMP
254 COMP_CTX_free(s->expand);
257 s->expand = COMP_CTX_new(comp->method);
258 if (s->expand == NULL) {
259 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
260 SSL_R_COMPRESSION_LIBRARY_ERROR);
263 if (!RECORD_LAYER_setup_comp_buffer(&s->rlayer))
268 * this is done by dtls1_reset_seq_numbers for DTLS
271 RECORD_LAYER_reset_read_sequence(&s->rlayer);
272 mac_secret = &(s->s3->read_mac_secret[0]);
273 mac_secret_size = &(s->s3->read_mac_secret_size);
275 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
276 s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
278 s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
279 if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s))
281 else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL)
283 dd = s->enc_write_ctx;
284 if (SSL_IS_DTLS(s)) {
285 mac_ctx = EVP_MD_CTX_new();
288 s->write_hash = mac_ctx;
290 mac_ctx = ssl_replace_hash(&s->write_hash, NULL);
294 #ifndef OPENSSL_NO_COMP
295 COMP_CTX_free(s->compress);
298 s->compress = COMP_CTX_new(comp->method);
299 if (s->compress == NULL) {
300 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
301 SSL_R_COMPRESSION_LIBRARY_ERROR);
307 * this is done by dtls1_reset_seq_numbers for DTLS
310 RECORD_LAYER_reset_write_sequence(&s->rlayer);
311 mac_secret = &(s->s3->write_mac_secret[0]);
312 mac_secret_size = &(s->s3->write_mac_secret_size);
316 EVP_CIPHER_CTX_reset(dd);
318 p = s->s3->tmp.key_block;
319 i = *mac_secret_size = s->s3->tmp.new_mac_secret_size;
321 cl = EVP_CIPHER_key_length(c);
323 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
324 /* If GCM/CCM mode only part of IV comes from PRF */
325 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
326 k = EVP_GCM_TLS_FIXED_IV_LEN;
327 else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE)
328 k = EVP_CCM_TLS_FIXED_IV_LEN;
330 k = EVP_CIPHER_iv_length(c);
331 if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
332 (which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
349 if (n > s->s3->tmp.key_block_length) {
350 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
354 memcpy(mac_secret, ms, i);
356 if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) {
357 mac_key = EVP_PKEY_new_mac_key(mac_type, NULL,
358 mac_secret, *mac_secret_size);
360 || EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key) <= 0) {
361 EVP_PKEY_free(mac_key);
362 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
365 EVP_PKEY_free(mac_key);
368 printf("which = %04X\nmac key=", which);
371 for (z = 0; z < i; z++)
372 printf("%02X%c", ms[z], ((z + 1) % 16) ? ' ' : '\n');
376 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) {
377 if (!EVP_CipherInit_ex(dd, c, NULL, key, NULL, (which & SSL3_CC_WRITE))
378 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GCM_SET_IV_FIXED, k, iv)) {
379 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
382 } else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE) {
384 if (s->s3->tmp.new_cipher->algorithm_enc & (SSL_AES128CCM8|SSL_AES256CCM8))
388 if (!EVP_CipherInit_ex(dd, c, NULL, NULL, NULL, (which & SSL3_CC_WRITE))
389 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_IVLEN, 12, NULL)
390 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_TAG, taglen, NULL)
391 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_CCM_SET_IV_FIXED, k, iv)
392 || !EVP_CipherInit_ex(dd, NULL, NULL, key, NULL, -1)) {
393 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
397 if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) {
398 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
402 /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
403 if ((EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER) && *mac_secret_size
404 && !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_MAC_KEY,
405 *mac_secret_size, mac_secret)) {
406 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
409 #ifdef OPENSSL_SSL_TRACE_CRYPTO
410 if (s->msg_callback) {
411 int wh = which & SSL3_CC_WRITE ? TLS1_RT_CRYPTO_WRITE : 0;
412 if (*mac_secret_size)
413 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_MAC,
414 mac_secret, *mac_secret_size,
415 s, s->msg_callback_arg);
417 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_KEY,
418 key, c->key_len, s, s->msg_callback_arg);
420 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
421 wh |= TLS1_RT_CRYPTO_FIXED_IV;
423 wh |= TLS1_RT_CRYPTO_IV;
424 s->msg_callback(2, s->version, wh, iv, k, s, s->msg_callback_arg);
430 printf("which = %04X\nkey=", which);
433 for (z = 0; z < EVP_CIPHER_key_length(c); z++)
434 printf("%02X%c", key[z], ((z + 1) % 16) ? ' ' : '\n');
439 for (z = 0; z < k; z++)
440 printf("%02X%c", iv[z], ((z + 1) % 16) ? ' ' : '\n');
445 OPENSSL_cleanse(tmp1, sizeof(tmp1));
446 OPENSSL_cleanse(tmp2, sizeof(tmp1));
447 OPENSSL_cleanse(iv1, sizeof(iv1));
448 OPENSSL_cleanse(iv2, sizeof(iv2));
451 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE);
453 OPENSSL_cleanse(tmp1, sizeof(tmp1));
454 OPENSSL_cleanse(tmp2, sizeof(tmp1));
455 OPENSSL_cleanse(iv1, sizeof(iv1));
456 OPENSSL_cleanse(iv2, sizeof(iv2));
460 int tls1_setup_key_block(SSL *s)
467 int mac_type = NID_undef, mac_secret_size = 0;
470 if (s->s3->tmp.key_block_length != 0)
473 if (!ssl_cipher_get_evp
474 (s->session, &c, &hash, &mac_type, &mac_secret_size, &comp,
476 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
480 s->s3->tmp.new_sym_enc = c;
481 s->s3->tmp.new_hash = hash;
482 s->s3->tmp.new_mac_pkey_type = mac_type;
483 s->s3->tmp.new_mac_secret_size = mac_secret_size;
485 EVP_CIPHER_key_length(c) + mac_secret_size + EVP_CIPHER_iv_length(c);
488 ssl3_cleanup_key_block(s);
490 if ((p = OPENSSL_malloc(num)) == NULL) {
491 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
495 s->s3->tmp.key_block_length = num;
496 s->s3->tmp.key_block = p;
499 printf("client random\n");
502 for (z = 0; z < SSL3_RANDOM_SIZE; z++)
503 printf("%02X%c", s->s3->client_random[z],
504 ((z + 1) % 16) ? ' ' : '\n');
506 printf("server random\n");
509 for (z = 0; z < SSL3_RANDOM_SIZE; z++)
510 printf("%02X%c", s->s3->server_random[z],
511 ((z + 1) % 16) ? ' ' : '\n');
513 printf("master key\n");
516 for (z = 0; z < s->session->master_key_length; z++)
517 printf("%02X%c", s->session->master_key[z],
518 ((z + 1) % 16) ? ' ' : '\n');
521 if (!tls1_generate_key_block(s, p, num))
524 printf("\nkey block\n");
527 for (z = 0; z < num; z++)
528 printf("%02X%c", p[z], ((z + 1) % 16) ? ' ' : '\n');
532 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)
533 && s->method->version <= TLS1_VERSION) {
535 * enable vulnerability countermeasure for CBC ciphers with known-IV
536 * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
538 s->s3->need_empty_fragments = 1;
540 if (s->session->cipher != NULL) {
541 if (s->session->cipher->algorithm_enc == SSL_eNULL)
542 s->s3->need_empty_fragments = 0;
544 #ifndef OPENSSL_NO_RC4
545 if (s->session->cipher->algorithm_enc == SSL_RC4)
546 s->s3->need_empty_fragments = 0;
556 int tls1_final_finish_mac(SSL *s, const char *str, int slen,
560 unsigned char hash[EVP_MAX_MD_SIZE];
562 if (!ssl3_digest_cached_records(s, 0))
565 hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
570 if (!tls1_PRF(s, str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0,
571 s->session->master_key, s->session->master_key_length,
572 out, TLS1_FINISH_MAC_LENGTH))
574 OPENSSL_cleanse(hash, hashlen);
575 return TLS1_FINISH_MAC_LENGTH;
578 int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
581 if (s->session->flags & SSL_SESS_FLAG_EXTMS) {
582 unsigned char hash[EVP_MAX_MD_SIZE * 2];
584 /* Digest cached records keeping record buffer (if present):
585 * this wont affect client auth because we're freezing the buffer
586 * at the same point (after client key exchange and before certificate
589 if (!ssl3_digest_cached_records(s, 1))
591 hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
593 fprintf(stderr, "Handshake hashes:\n");
594 BIO_dump_fp(stderr, (char *)hash, hashlen);
597 TLS_MD_EXTENDED_MASTER_SECRET_CONST,
598 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE,
602 NULL, 0, p, len, s->session->master_key,
603 SSL3_MASTER_SECRET_SIZE);
604 OPENSSL_cleanse(hash, hashlen);
607 TLS_MD_MASTER_SECRET_CONST,
608 TLS_MD_MASTER_SECRET_CONST_SIZE,
609 s->s3->client_random, SSL3_RANDOM_SIZE,
611 s->s3->server_random, SSL3_RANDOM_SIZE,
612 NULL, 0, p, len, s->session->master_key,
613 SSL3_MASTER_SECRET_SIZE);
616 fprintf(stderr, "Premaster Secret:\n");
617 BIO_dump_fp(stderr, (char *)p, len);
618 fprintf(stderr, "Client Random:\n");
619 BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE);
620 fprintf(stderr, "Server Random:\n");
621 BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE);
622 fprintf(stderr, "Master Secret:\n");
623 BIO_dump_fp(stderr, (char *)s->session->master_key,
624 SSL3_MASTER_SECRET_SIZE);
627 #ifdef OPENSSL_SSL_TRACE_CRYPTO
628 if (s->msg_callback) {
629 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER,
630 p, len, s, s->msg_callback_arg);
631 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM,
632 s->s3->client_random, SSL3_RANDOM_SIZE,
633 s, s->msg_callback_arg);
634 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_SERVER_RANDOM,
635 s->s3->server_random, SSL3_RANDOM_SIZE,
636 s, s->msg_callback_arg);
637 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_MASTER,
638 s->session->master_key,
639 SSL3_MASTER_SECRET_SIZE, s, s->msg_callback_arg);
643 return (SSL3_MASTER_SECRET_SIZE);
646 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
647 const char *label, size_t llen,
648 const unsigned char *context,
649 size_t contextlen, int use_context)
651 unsigned char *val = NULL;
652 size_t vallen = 0, currentvalpos;
656 * construct PRF arguments we construct the PRF argument ourself rather
657 * than passing separate values into the TLS PRF to ensure that the
658 * concatenation of values does not create a prohibited label.
660 vallen = llen + SSL3_RANDOM_SIZE * 2;
662 vallen += 2 + contextlen;
665 val = OPENSSL_malloc(vallen);
669 memcpy(val + currentvalpos, (unsigned char *)label, llen);
670 currentvalpos += llen;
671 memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE);
672 currentvalpos += SSL3_RANDOM_SIZE;
673 memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE);
674 currentvalpos += SSL3_RANDOM_SIZE;
677 val[currentvalpos] = (contextlen >> 8) & 0xff;
679 val[currentvalpos] = contextlen & 0xff;
681 if ((contextlen > 0) || (context != NULL)) {
682 memcpy(val + currentvalpos, context, contextlen);
687 * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
688 * label len) = 15, so size of val > max(prohibited label len) = 15 and
689 * the comparisons won't have buffer overflow
691 if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST,
692 TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0)
694 if (memcmp(val, TLS_MD_SERVER_FINISH_CONST,
695 TLS_MD_SERVER_FINISH_CONST_SIZE) == 0)
697 if (memcmp(val, TLS_MD_MASTER_SECRET_CONST,
698 TLS_MD_MASTER_SECRET_CONST_SIZE) == 0)
700 if (memcmp(val, TLS_MD_EXTENDED_MASTER_SECRET_CONST,
701 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE) == 0)
703 if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST,
704 TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0)
713 s->session->master_key, s->session->master_key_length,
718 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL,
719 SSL_R_TLS_ILLEGAL_EXPORTER_LABEL);
723 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE);
726 OPENSSL_clear_free(val, vallen);
730 int tls1_alert_code(int code)
733 case SSL_AD_CLOSE_NOTIFY:
734 return (SSL3_AD_CLOSE_NOTIFY);
735 case SSL_AD_UNEXPECTED_MESSAGE:
736 return (SSL3_AD_UNEXPECTED_MESSAGE);
737 case SSL_AD_BAD_RECORD_MAC:
738 return (SSL3_AD_BAD_RECORD_MAC);
739 case SSL_AD_DECRYPTION_FAILED:
740 return (TLS1_AD_DECRYPTION_FAILED);
741 case SSL_AD_RECORD_OVERFLOW:
742 return (TLS1_AD_RECORD_OVERFLOW);
743 case SSL_AD_DECOMPRESSION_FAILURE:
744 return (SSL3_AD_DECOMPRESSION_FAILURE);
745 case SSL_AD_HANDSHAKE_FAILURE:
746 return (SSL3_AD_HANDSHAKE_FAILURE);
747 case SSL_AD_NO_CERTIFICATE:
749 case SSL_AD_BAD_CERTIFICATE:
750 return (SSL3_AD_BAD_CERTIFICATE);
751 case SSL_AD_UNSUPPORTED_CERTIFICATE:
752 return (SSL3_AD_UNSUPPORTED_CERTIFICATE);
753 case SSL_AD_CERTIFICATE_REVOKED:
754 return (SSL3_AD_CERTIFICATE_REVOKED);
755 case SSL_AD_CERTIFICATE_EXPIRED:
756 return (SSL3_AD_CERTIFICATE_EXPIRED);
757 case SSL_AD_CERTIFICATE_UNKNOWN:
758 return (SSL3_AD_CERTIFICATE_UNKNOWN);
759 case SSL_AD_ILLEGAL_PARAMETER:
760 return (SSL3_AD_ILLEGAL_PARAMETER);
761 case SSL_AD_UNKNOWN_CA:
762 return (TLS1_AD_UNKNOWN_CA);
763 case SSL_AD_ACCESS_DENIED:
764 return (TLS1_AD_ACCESS_DENIED);
765 case SSL_AD_DECODE_ERROR:
766 return (TLS1_AD_DECODE_ERROR);
767 case SSL_AD_DECRYPT_ERROR:
768 return (TLS1_AD_DECRYPT_ERROR);
769 case SSL_AD_EXPORT_RESTRICTION:
770 return (TLS1_AD_EXPORT_RESTRICTION);
771 case SSL_AD_PROTOCOL_VERSION:
772 return (TLS1_AD_PROTOCOL_VERSION);
773 case SSL_AD_INSUFFICIENT_SECURITY:
774 return (TLS1_AD_INSUFFICIENT_SECURITY);
775 case SSL_AD_INTERNAL_ERROR:
776 return (TLS1_AD_INTERNAL_ERROR);
777 case SSL_AD_USER_CANCELLED:
778 return (TLS1_AD_USER_CANCELLED);
779 case SSL_AD_NO_RENEGOTIATION:
780 return (TLS1_AD_NO_RENEGOTIATION);
781 case SSL_AD_UNSUPPORTED_EXTENSION:
782 return (TLS1_AD_UNSUPPORTED_EXTENSION);
783 case SSL_AD_CERTIFICATE_UNOBTAINABLE:
784 return (TLS1_AD_CERTIFICATE_UNOBTAINABLE);
785 case SSL_AD_UNRECOGNIZED_NAME:
786 return (TLS1_AD_UNRECOGNIZED_NAME);
787 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
788 return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
789 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
790 return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
791 case SSL_AD_UNKNOWN_PSK_IDENTITY:
792 return (TLS1_AD_UNKNOWN_PSK_IDENTITY);
793 case SSL_AD_INAPPROPRIATE_FALLBACK:
794 return (TLS1_AD_INAPPROPRIATE_FALLBACK);