2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
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).
111 /* ====================================================================
112 * Copyright 2005 Nokia. All rights reserved.
114 * The portions of the attached software ("Contribution") is developed by
115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
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.
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.
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.
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
139 #include "ssl_locl.h"
140 #ifndef OPENSSL_NO_COMP
141 # include <openssl/comp.h>
143 #include <openssl/evp.h>
144 #include <openssl/hmac.h>
145 #include <openssl/md5.h>
146 #include <openssl/rand.h>
148 /* seed1 through seed5 are virtually concatenated */
149 static int tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
151 const void *seed1, int seed1_len,
152 const void *seed2, int seed2_len,
153 const void *seed3, int seed3_len,
154 const void *seed4, int seed4_len,
155 const void *seed5, int seed5_len,
156 unsigned char *out, int olen)
160 EVP_MD_CTX ctx, ctx_tmp, ctx_init;
162 unsigned char A1[EVP_MAX_MD_SIZE];
166 chunk = EVP_MD_size(md);
167 OPENSSL_assert(chunk >= 0);
169 EVP_MD_CTX_init(&ctx);
170 EVP_MD_CTX_init(&ctx_tmp);
171 EVP_MD_CTX_init(&ctx_init);
172 EVP_MD_CTX_set_flags(&ctx_init, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
173 mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len);
176 if (!EVP_DigestSignInit(&ctx_init, NULL, md, NULL, mac_key))
178 if (!EVP_MD_CTX_copy_ex(&ctx, &ctx_init))
180 if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len))
182 if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len))
184 if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len))
186 if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len))
188 if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len))
190 if (!EVP_DigestSignFinal(&ctx, A1, &A1_len))
194 /* Reinit mac contexts */
195 if (!EVP_MD_CTX_copy_ex(&ctx, &ctx_init))
197 if (!EVP_DigestSignUpdate(&ctx, A1, A1_len))
199 if (olen > chunk && !EVP_MD_CTX_copy_ex(&ctx_tmp, &ctx))
201 if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len))
203 if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len))
205 if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len))
207 if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len))
209 if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len))
213 if (!EVP_DigestSignFinal(&ctx, out, &j))
217 /* calc the next A1 value */
218 if (!EVP_DigestSignFinal(&ctx_tmp, A1, &A1_len))
220 } else { /* last one */
222 if (!EVP_DigestSignFinal(&ctx, A1, &A1_len))
224 memcpy(out, A1, olen);
230 EVP_PKEY_free(mac_key);
231 EVP_MD_CTX_cleanup(&ctx);
232 EVP_MD_CTX_cleanup(&ctx_tmp);
233 EVP_MD_CTX_cleanup(&ctx_init);
234 OPENSSL_cleanse(A1, sizeof(A1));
238 /* seed1 through seed5 are virtually concatenated */
239 static int tls1_PRF(SSL *s,
240 const void *seed1, int seed1_len,
241 const void *seed2, int seed2_len,
242 const void *seed3, int seed3_len,
243 const void *seed4, int seed4_len,
244 const void *seed5, int seed5_len,
245 const unsigned char *sec, int slen,
246 unsigned char *out1, unsigned char *out2, int olen)
248 const EVP_MD *md = ssl_prf_md(s);
251 /* Should never happen */
252 SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR);
255 if (EVP_MD_type(md) == NID_md5_sha1) {
257 if (!tls1_P_hash(EVP_md5(), sec, slen/2 + (slen & 1),
258 seed1, seed1_len, seed2, seed2_len, seed3,
259 seed3_len, seed4, seed4_len, seed5, seed5_len,
262 if (!tls1_P_hash(EVP_sha1(), sec + slen/2, slen/2 + (slen & 1),
263 seed1, seed1_len, seed2, seed2_len, seed3,
264 seed3_len, seed4, seed4_len, seed5, seed5_len,
267 for (i = 0; i < olen; i++)
271 memset(out2, 0, olen);
272 if (!tls1_P_hash(md, sec, slen,
273 seed1, seed1_len, seed2, seed2_len, seed3,
274 seed3_len, seed4, seed4_len, seed5, seed5_len,
281 static int tls1_generate_key_block(SSL *s, unsigned char *km,
282 unsigned char *tmp, int num)
286 TLS_MD_KEY_EXPANSION_CONST,
287 TLS_MD_KEY_EXPANSION_CONST_SIZE, s->s3->server_random,
288 SSL3_RANDOM_SIZE, s->s3->client_random, SSL3_RANDOM_SIZE,
289 NULL, 0, NULL, 0, s->session->master_key,
290 s->session->master_key_length, km, tmp, num);
295 int tls1_change_cipher_state(SSL *s, int which)
297 static const unsigned char empty[] = "";
298 unsigned char *p, *mac_secret;
299 unsigned char *exp_label;
300 unsigned char tmp1[EVP_MAX_KEY_LENGTH];
301 unsigned char tmp2[EVP_MAX_KEY_LENGTH];
302 unsigned char iv1[EVP_MAX_IV_LENGTH * 2];
303 unsigned char iv2[EVP_MAX_IV_LENGTH * 2];
304 unsigned char *ms, *key, *iv;
308 #ifndef OPENSSL_NO_COMP
309 const SSL_COMP *comp;
313 int *mac_secret_size;
316 int is_export, n, i, j, k, exp_label_len, cl;
319 is_export = SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
320 c = s->s3->tmp.new_sym_enc;
321 m = s->s3->tmp.new_hash;
322 mac_type = s->s3->tmp.new_mac_pkey_type;
323 #ifndef OPENSSL_NO_COMP
324 comp = s->s3->tmp.new_compression;
327 if (which & SSL3_CC_READ) {
328 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
329 s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
331 s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
333 if (s->enc_read_ctx != NULL)
335 else if ((s->enc_read_ctx =
336 OPENSSL_malloc(sizeof(*s->enc_read_ctx))) == NULL)
340 * make sure it's intialized in case we exit later with an error
342 EVP_CIPHER_CTX_init(s->enc_read_ctx);
343 dd = s->enc_read_ctx;
344 mac_ctx = ssl_replace_hash(&s->read_hash, NULL);
347 #ifndef OPENSSL_NO_COMP
348 COMP_CTX_free(s->expand);
351 s->expand = COMP_CTX_new(comp->method);
352 if (s->expand == NULL) {
353 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
354 SSL_R_COMPRESSION_LIBRARY_ERROR);
357 if (!RECORD_LAYER_setup_comp_buffer(&s->rlayer))
362 * this is done by dtls1_reset_seq_numbers for DTLS
365 RECORD_LAYER_reset_read_sequence(&s->rlayer);
366 mac_secret = &(s->s3->read_mac_secret[0]);
367 mac_secret_size = &(s->s3->read_mac_secret_size);
369 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
370 s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
372 s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
373 if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s))
375 else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL)
377 dd = s->enc_write_ctx;
378 if (SSL_IS_DTLS(s)) {
379 mac_ctx = EVP_MD_CTX_create();
382 s->write_hash = mac_ctx;
384 mac_ctx = ssl_replace_hash(&s->write_hash, NULL);
388 #ifndef OPENSSL_NO_COMP
389 COMP_CTX_free(s->compress);
392 s->compress = COMP_CTX_new(comp->method);
393 if (s->compress == NULL) {
394 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
395 SSL_R_COMPRESSION_LIBRARY_ERROR);
401 * this is done by dtls1_reset_seq_numbers for DTLS
404 RECORD_LAYER_reset_write_sequence(&s->rlayer);
405 mac_secret = &(s->s3->write_mac_secret[0]);
406 mac_secret_size = &(s->s3->write_mac_secret_size);
410 EVP_CIPHER_CTX_cleanup(dd);
412 p = s->s3->tmp.key_block;
413 i = *mac_secret_size = s->s3->tmp.new_mac_secret_size;
415 cl = EVP_CIPHER_key_length(c);
416 j = is_export ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
417 cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
418 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
419 /* If GCM/CCM mode only part of IV comes from PRF */
420 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
421 k = EVP_GCM_TLS_FIXED_IV_LEN;
422 else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE)
423 k = EVP_CCM_TLS_FIXED_IV_LEN;
425 k = EVP_CIPHER_iv_length(c);
426 if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
427 (which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
434 exp_label = (unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST;
435 exp_label_len = TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE;
445 exp_label = (unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST;
446 exp_label_len = TLS_MD_SERVER_WRITE_KEY_CONST_SIZE;
450 if (n > s->s3->tmp.key_block_length) {
451 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
455 memcpy(mac_secret, ms, i);
457 if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) {
458 mac_key = EVP_PKEY_new_mac_key(mac_type, NULL,
459 mac_secret, *mac_secret_size);
461 || EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key) <= 0) {
462 EVP_PKEY_free(mac_key);
463 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
466 EVP_PKEY_free(mac_key);
469 printf("which = %04X\nmac key=", which);
472 for (z = 0; z < i; z++)
473 printf("%02X%c", ms[z], ((z + 1) % 16) ? ' ' : '\n');
478 * In here I set both the read and write key/iv to the same value
479 * since only the correct one will be used :-).
482 exp_label, exp_label_len,
483 s->s3->client_random, SSL3_RANDOM_SIZE,
484 s->s3->server_random, SSL3_RANDOM_SIZE,
486 key, j, tmp1, tmp2, EVP_CIPHER_key_length(c)))
492 TLS_MD_IV_BLOCK_CONST, TLS_MD_IV_BLOCK_CONST_SIZE,
493 s->s3->client_random, SSL3_RANDOM_SIZE,
494 s->s3->server_random, SSL3_RANDOM_SIZE,
495 NULL, 0, NULL, 0, empty, 0, iv1, iv2, k * 2))
504 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) {
505 if (!EVP_CipherInit_ex(dd, c, NULL, key, NULL, (which & SSL3_CC_WRITE))
506 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GCM_SET_IV_FIXED, k, iv)) {
507 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
510 } else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE) {
512 if (s->s3->tmp.new_cipher->algorithm_enc & (SSL_AES128CCM8|SSL_AES256CCM8))
516 if (!EVP_CipherInit_ex(dd, c, NULL, NULL, NULL, (which & SSL3_CC_WRITE))
517 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_IVLEN, 12, NULL)
518 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_TAG, taglen, NULL)
519 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_CCM_SET_IV_FIXED, k, iv)
520 || !EVP_CipherInit_ex(dd, NULL, NULL, key, NULL, -1)) {
521 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
525 if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) {
526 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
530 /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
531 if ((EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER) && *mac_secret_size
532 && !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_MAC_KEY,
533 *mac_secret_size, mac_secret)) {
534 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
537 #ifdef OPENSSL_SSL_TRACE_CRYPTO
538 if (s->msg_callback) {
539 int wh = which & SSL3_CC_WRITE ? TLS1_RT_CRYPTO_WRITE : 0;
540 if (*mac_secret_size)
541 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_MAC,
542 mac_secret, *mac_secret_size,
543 s, s->msg_callback_arg);
545 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_KEY,
546 key, c->key_len, s, s->msg_callback_arg);
548 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
549 wh |= TLS1_RT_CRYPTO_FIXED_IV;
551 wh |= TLS1_RT_CRYPTO_IV;
552 s->msg_callback(2, s->version, wh, iv, k, s, s->msg_callback_arg);
558 printf("which = %04X\nkey=", which);
561 for (z = 0; z < EVP_CIPHER_key_length(c); z++)
562 printf("%02X%c", key[z], ((z + 1) % 16) ? ' ' : '\n');
567 for (z = 0; z < k; z++)
568 printf("%02X%c", iv[z], ((z + 1) % 16) ? ' ' : '\n');
573 OPENSSL_cleanse(tmp1, sizeof(tmp1));
574 OPENSSL_cleanse(tmp2, sizeof(tmp1));
575 OPENSSL_cleanse(iv1, sizeof(iv1));
576 OPENSSL_cleanse(iv2, sizeof(iv2));
579 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE);
581 OPENSSL_cleanse(tmp1, sizeof(tmp1));
582 OPENSSL_cleanse(tmp2, sizeof(tmp1));
583 OPENSSL_cleanse(iv1, sizeof(iv1));
584 OPENSSL_cleanse(iv2, sizeof(iv2));
588 int tls1_setup_key_block(SSL *s)
590 unsigned char *p1, *p2 = NULL;
595 int mac_type = NID_undef, mac_secret_size = 0;
598 if (s->s3->tmp.key_block_length != 0)
601 if (!ssl_cipher_get_evp
602 (s->session, &c, &hash, &mac_type, &mac_secret_size, &comp,
604 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
608 s->s3->tmp.new_sym_enc = c;
609 s->s3->tmp.new_hash = hash;
610 s->s3->tmp.new_mac_pkey_type = mac_type;
611 s->s3->tmp.new_mac_secret_size = mac_secret_size;
613 EVP_CIPHER_key_length(c) + mac_secret_size + EVP_CIPHER_iv_length(c);
616 ssl3_cleanup_key_block(s);
618 if ((p1 = OPENSSL_malloc(num)) == NULL) {
619 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
623 s->s3->tmp.key_block_length = num;
624 s->s3->tmp.key_block = p1;
626 if ((p2 = OPENSSL_malloc(num)) == NULL) {
627 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
632 printf("client random\n");
635 for (z = 0; z < SSL3_RANDOM_SIZE; z++)
636 printf("%02X%c", s->s3->client_random[z],
637 ((z + 1) % 16) ? ' ' : '\n');
639 printf("server random\n");
642 for (z = 0; z < SSL3_RANDOM_SIZE; z++)
643 printf("%02X%c", s->s3->server_random[z],
644 ((z + 1) % 16) ? ' ' : '\n');
646 printf("master key\n");
649 for (z = 0; z < s->session->master_key_length; z++)
650 printf("%02X%c", s->session->master_key[z],
651 ((z + 1) % 16) ? ' ' : '\n');
654 if (!tls1_generate_key_block(s, p1, p2, num))
657 printf("\nkey block\n");
660 for (z = 0; z < num; z++)
661 printf("%02X%c", p1[z], ((z + 1) % 16) ? ' ' : '\n');
665 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)
666 && s->method->version <= TLS1_VERSION) {
668 * enable vulnerability countermeasure for CBC ciphers with known-IV
669 * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
671 s->s3->need_empty_fragments = 1;
673 if (s->session->cipher != NULL) {
674 if (s->session->cipher->algorithm_enc == SSL_eNULL)
675 s->s3->need_empty_fragments = 0;
677 #ifndef OPENSSL_NO_RC4
678 if (s->session->cipher->algorithm_enc == SSL_RC4)
679 s->s3->need_empty_fragments = 0;
686 OPENSSL_clear_free(p2, num);
690 int tls1_final_finish_mac(SSL *s, const char *str, int slen,
694 unsigned char hash[EVP_MAX_MD_SIZE];
695 unsigned char buf2[12];
697 if (!ssl3_digest_cached_records(s, 0))
700 hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
706 str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0,
707 s->session->master_key, s->session->master_key_length,
708 out, buf2, sizeof buf2))
710 OPENSSL_cleanse(hash, hashlen);
711 OPENSSL_cleanse(buf2, sizeof(buf2));
715 int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
718 unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
720 if (s->session->flags & SSL_SESS_FLAG_EXTMS) {
721 unsigned char hash[EVP_MAX_MD_SIZE * 2];
723 /* Digest cached records keeping record buffer (if present):
724 * this wont affect client auth because we're freezing the buffer
725 * at the same point (after client key exchange and before certificate
728 if (!ssl3_digest_cached_records(s, 1))
730 hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
732 fprintf(stderr, "Handshake hashes:\n");
733 BIO_dump_fp(stderr, (char *)hash, hashlen);
736 TLS_MD_EXTENDED_MASTER_SECRET_CONST,
737 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE,
741 NULL, 0, p, len, s->session->master_key, buff, sizeof buff);
742 OPENSSL_cleanse(hash, hashlen);
745 TLS_MD_MASTER_SECRET_CONST,
746 TLS_MD_MASTER_SECRET_CONST_SIZE,
747 s->s3->client_random, SSL3_RANDOM_SIZE,
749 s->s3->server_random, SSL3_RANDOM_SIZE,
750 NULL, 0, p, len, s->session->master_key, buff, sizeof buff);
752 OPENSSL_cleanse(buff, sizeof buff);
754 fprintf(stderr, "Premaster Secret:\n");
755 BIO_dump_fp(stderr, (char *)p, len);
756 fprintf(stderr, "Client Random:\n");
757 BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE);
758 fprintf(stderr, "Server Random:\n");
759 BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE);
760 fprintf(stderr, "Master Secret:\n");
761 BIO_dump_fp(stderr, (char *)s->session->master_key,
762 SSL3_MASTER_SECRET_SIZE);
765 #ifdef OPENSSL_SSL_TRACE_CRYPTO
766 if (s->msg_callback) {
767 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER,
768 p, len, s, s->msg_callback_arg);
769 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM,
770 s->s3->client_random, SSL3_RANDOM_SIZE,
771 s, s->msg_callback_arg);
772 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_SERVER_RANDOM,
773 s->s3->server_random, SSL3_RANDOM_SIZE,
774 s, s->msg_callback_arg);
775 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_MASTER,
776 s->session->master_key,
777 SSL3_MASTER_SECRET_SIZE, s, s->msg_callback_arg);
781 return (SSL3_MASTER_SECRET_SIZE);
784 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
785 const char *label, size_t llen,
786 const unsigned char *context,
787 size_t contextlen, int use_context)
790 unsigned char *val = NULL;
791 size_t vallen = 0, currentvalpos;
794 buff = OPENSSL_malloc(olen);
799 * construct PRF arguments we construct the PRF argument ourself rather
800 * than passing separate values into the TLS PRF to ensure that the
801 * concatenation of values does not create a prohibited label.
803 vallen = llen + SSL3_RANDOM_SIZE * 2;
805 vallen += 2 + contextlen;
808 val = OPENSSL_malloc(vallen);
812 memcpy(val + currentvalpos, (unsigned char *)label, llen);
813 currentvalpos += llen;
814 memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE);
815 currentvalpos += SSL3_RANDOM_SIZE;
816 memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE);
817 currentvalpos += SSL3_RANDOM_SIZE;
820 val[currentvalpos] = (contextlen >> 8) & 0xff;
822 val[currentvalpos] = contextlen & 0xff;
824 if ((contextlen > 0) || (context != NULL)) {
825 memcpy(val + currentvalpos, context, contextlen);
830 * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
831 * label len) = 15, so size of val > max(prohibited label len) = 15 and
832 * the comparisons won't have buffer overflow
834 if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST,
835 TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0)
837 if (memcmp(val, TLS_MD_SERVER_FINISH_CONST,
838 TLS_MD_SERVER_FINISH_CONST_SIZE) == 0)
840 if (memcmp(val, TLS_MD_MASTER_SECRET_CONST,
841 TLS_MD_MASTER_SECRET_CONST_SIZE) == 0)
843 if (memcmp(val, TLS_MD_EXTENDED_MASTER_SECRET_CONST,
844 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE) == 0)
846 if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST,
847 TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0)
856 s->session->master_key, s->session->master_key_length,
861 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL,
862 SSL_R_TLS_ILLEGAL_EXPORTER_LABEL);
866 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE);
869 CRYPTO_clear_free(val, vallen);
870 CRYPTO_clear_free(buff, olen);
874 int tls1_alert_code(int code)
877 case SSL_AD_CLOSE_NOTIFY:
878 return (SSL3_AD_CLOSE_NOTIFY);
879 case SSL_AD_UNEXPECTED_MESSAGE:
880 return (SSL3_AD_UNEXPECTED_MESSAGE);
881 case SSL_AD_BAD_RECORD_MAC:
882 return (SSL3_AD_BAD_RECORD_MAC);
883 case SSL_AD_DECRYPTION_FAILED:
884 return (TLS1_AD_DECRYPTION_FAILED);
885 case SSL_AD_RECORD_OVERFLOW:
886 return (TLS1_AD_RECORD_OVERFLOW);
887 case SSL_AD_DECOMPRESSION_FAILURE:
888 return (SSL3_AD_DECOMPRESSION_FAILURE);
889 case SSL_AD_HANDSHAKE_FAILURE:
890 return (SSL3_AD_HANDSHAKE_FAILURE);
891 case SSL_AD_NO_CERTIFICATE:
893 case SSL_AD_BAD_CERTIFICATE:
894 return (SSL3_AD_BAD_CERTIFICATE);
895 case SSL_AD_UNSUPPORTED_CERTIFICATE:
896 return (SSL3_AD_UNSUPPORTED_CERTIFICATE);
897 case SSL_AD_CERTIFICATE_REVOKED:
898 return (SSL3_AD_CERTIFICATE_REVOKED);
899 case SSL_AD_CERTIFICATE_EXPIRED:
900 return (SSL3_AD_CERTIFICATE_EXPIRED);
901 case SSL_AD_CERTIFICATE_UNKNOWN:
902 return (SSL3_AD_CERTIFICATE_UNKNOWN);
903 case SSL_AD_ILLEGAL_PARAMETER:
904 return (SSL3_AD_ILLEGAL_PARAMETER);
905 case SSL_AD_UNKNOWN_CA:
906 return (TLS1_AD_UNKNOWN_CA);
907 case SSL_AD_ACCESS_DENIED:
908 return (TLS1_AD_ACCESS_DENIED);
909 case SSL_AD_DECODE_ERROR:
910 return (TLS1_AD_DECODE_ERROR);
911 case SSL_AD_DECRYPT_ERROR:
912 return (TLS1_AD_DECRYPT_ERROR);
913 case SSL_AD_EXPORT_RESTRICTION:
914 return (TLS1_AD_EXPORT_RESTRICTION);
915 case SSL_AD_PROTOCOL_VERSION:
916 return (TLS1_AD_PROTOCOL_VERSION);
917 case SSL_AD_INSUFFICIENT_SECURITY:
918 return (TLS1_AD_INSUFFICIENT_SECURITY);
919 case SSL_AD_INTERNAL_ERROR:
920 return (TLS1_AD_INTERNAL_ERROR);
921 case SSL_AD_USER_CANCELLED:
922 return (TLS1_AD_USER_CANCELLED);
923 case SSL_AD_NO_RENEGOTIATION:
924 return (TLS1_AD_NO_RENEGOTIATION);
925 case SSL_AD_UNSUPPORTED_EXTENSION:
926 return (TLS1_AD_UNSUPPORTED_EXTENSION);
927 case SSL_AD_CERTIFICATE_UNOBTAINABLE:
928 return (TLS1_AD_CERTIFICATE_UNOBTAINABLE);
929 case SSL_AD_UNRECOGNIZED_NAME:
930 return (TLS1_AD_UNRECOGNIZED_NAME);
931 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
932 return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
933 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
934 return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
935 case SSL_AD_UNKNOWN_PSK_IDENTITY:
936 return (TLS1_AD_UNKNOWN_PSK_IDENTITY);
937 case SSL_AD_INAPPROPRIATE_FALLBACK:
938 return (TLS1_AD_INAPPROPRIATE_FALLBACK);