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 # include <openssl/des.h>
151 /* seed1 through seed5 are virtually concatenated */
152 static int tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
154 const void *seed1, int seed1_len,
155 const void *seed2, int seed2_len,
156 const void *seed3, int seed3_len,
157 const void *seed4, int seed4_len,
158 const void *seed5, int seed5_len,
159 unsigned char *out, int olen)
163 EVP_MD_CTX ctx, ctx_tmp, ctx_init;
165 unsigned char A1[EVP_MAX_MD_SIZE];
169 chunk = EVP_MD_size(md);
170 OPENSSL_assert(chunk >= 0);
172 EVP_MD_CTX_init(&ctx);
173 EVP_MD_CTX_init(&ctx_tmp);
174 EVP_MD_CTX_init(&ctx_init);
175 EVP_MD_CTX_set_flags(&ctx_init, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
176 mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len);
179 if (!EVP_DigestSignInit(&ctx_init, NULL, md, NULL, mac_key))
181 if (!EVP_MD_CTX_copy_ex(&ctx, &ctx_init))
183 if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len))
185 if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len))
187 if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len))
189 if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len))
191 if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len))
193 if (!EVP_DigestSignFinal(&ctx, A1, &A1_len))
197 /* Reinit mac contexts */
198 if (!EVP_MD_CTX_copy_ex(&ctx, &ctx_init))
200 if (!EVP_DigestSignUpdate(&ctx, A1, A1_len))
202 if (olen > chunk && !EVP_MD_CTX_copy_ex(&ctx_tmp, &ctx))
204 if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len))
206 if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len))
208 if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len))
210 if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len))
212 if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len))
216 if (!EVP_DigestSignFinal(&ctx, out, &j))
220 /* calc the next A1 value */
221 if (!EVP_DigestSignFinal(&ctx_tmp, A1, &A1_len))
223 } else { /* last one */
225 if (!EVP_DigestSignFinal(&ctx, A1, &A1_len))
227 memcpy(out, A1, olen);
233 EVP_PKEY_free(mac_key);
234 EVP_MD_CTX_cleanup(&ctx);
235 EVP_MD_CTX_cleanup(&ctx_tmp);
236 EVP_MD_CTX_cleanup(&ctx_init);
237 OPENSSL_cleanse(A1, sizeof(A1));
241 /* seed1 through seed5 are virtually concatenated */
242 static int tls1_PRF(long digest_mask,
243 const void *seed1, int seed1_len,
244 const void *seed2, int seed2_len,
245 const void *seed3, int seed3_len,
246 const void *seed4, int seed4_len,
247 const void *seed5, int seed5_len,
248 const unsigned char *sec, int slen,
249 unsigned char *out1, unsigned char *out2, int olen)
251 int len, i, idx, count;
252 const unsigned char *S1;
257 /* Count number of digests and partition sec evenly */
259 for (idx = 0; ssl_get_handshake_digest(idx, &m, &md); idx++) {
260 if ((m << TLS1_PRF_DGST_SHIFT) & digest_mask)
264 /* Should never happen */
265 SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR);
272 memset(out1, 0, olen);
273 for (idx = 0; ssl_get_handshake_digest(idx, &m, &md); idx++) {
274 if ((m << TLS1_PRF_DGST_SHIFT) & digest_mask) {
276 SSLerr(SSL_F_TLS1_PRF, SSL_R_UNSUPPORTED_DIGEST_TYPE);
279 if (!tls1_P_hash(md, S1, len + (slen & 1),
280 seed1, seed1_len, seed2, seed2_len, seed3,
281 seed3_len, seed4, seed4_len, seed5, seed5_len,
285 for (i = 0; i < olen; i++) {
295 static int tls1_generate_key_block(SSL *s, unsigned char *km,
296 unsigned char *tmp, int num)
299 ret = tls1_PRF(ssl_get_algorithm2(s),
300 TLS_MD_KEY_EXPANSION_CONST,
301 TLS_MD_KEY_EXPANSION_CONST_SIZE, s->s3->server_random,
302 SSL3_RANDOM_SIZE, s->s3->client_random, SSL3_RANDOM_SIZE,
303 NULL, 0, NULL, 0, s->session->master_key,
304 s->session->master_key_length, km, tmp, num);
306 fprintf(stderr, "tls1_generate_key_block() ==> %d byte master_key =\n\t",
307 s->session->master_key_length);
310 for (i = 0; i < s->session->master_key_length; i++) {
311 fprintf(stderr, "%02X", s->session->master_key[i]);
313 fprintf(stderr, "\n");
315 #endif /* KSSL_DEBUG */
319 int tls1_change_cipher_state(SSL *s, int which)
321 static const unsigned char empty[] = "";
322 unsigned char *p, *mac_secret;
323 unsigned char *exp_label;
324 unsigned char tmp1[EVP_MAX_KEY_LENGTH];
325 unsigned char tmp2[EVP_MAX_KEY_LENGTH];
326 unsigned char iv1[EVP_MAX_IV_LENGTH * 2];
327 unsigned char iv2[EVP_MAX_IV_LENGTH * 2];
328 unsigned char *ms, *key, *iv;
332 #ifndef OPENSSL_NO_COMP
333 const SSL_COMP *comp;
337 int *mac_secret_size;
340 int is_export, n, i, j, k, exp_label_len, cl;
343 is_export = SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
344 c = s->s3->tmp.new_sym_enc;
345 m = s->s3->tmp.new_hash;
346 mac_type = s->s3->tmp.new_mac_pkey_type;
347 #ifndef OPENSSL_NO_COMP
348 comp = s->s3->tmp.new_compression;
352 fprintf(stderr, "tls1_change_cipher_state(which= %d) w/\n", which);
353 fprintf(stderr, "\talg= %ld/%ld, comp= %p\n",
354 s->s3->tmp.new_cipher->algorithm_mkey,
355 s->s3->tmp.new_cipher->algorithm_auth, comp);
356 fprintf(stderr, "\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c);
357 fprintf(stderr, "\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n",
358 c->nid, c->block_size, c->key_len, c->iv_len);
359 fprintf(stderr, "\tkey_block: len= %d, data= ",
360 s->s3->tmp.key_block_length);
363 for (i = 0; i < s->s3->tmp.key_block_length; i++)
364 fprintf(stderr, "%02x", s->s3->tmp.key_block[i]);
365 fprintf(stderr, "\n");
367 #endif /* KSSL_DEBUG */
369 if (which & SSL3_CC_READ) {
370 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
371 s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
373 s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
375 if (s->enc_read_ctx != NULL)
377 else if ((s->enc_read_ctx =
378 OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
382 * make sure it's intialized in case we exit later with an error
384 EVP_CIPHER_CTX_init(s->enc_read_ctx);
385 dd = s->enc_read_ctx;
386 mac_ctx = ssl_replace_hash(&s->read_hash, NULL);
387 #ifndef OPENSSL_NO_COMP
388 if (s->expand != NULL) {
389 COMP_CTX_free(s->expand);
393 s->expand = COMP_CTX_new(comp->method);
394 if (s->expand == NULL) {
395 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
396 SSL_R_COMPRESSION_LIBRARY_ERROR);
399 if (SSL3_RECORD_setup(RECORD_LAYER_get_rrec(&s->rlayer),
400 SSL3_RT_MAX_ENCRYPTED_LENGTH))
405 * this is done by dtls1_reset_seq_numbers for DTLS
408 memset(&(s->s3->read_sequence[0]), 0, 8);
409 mac_secret = &(s->s3->read_mac_secret[0]);
410 mac_secret_size = &(s->s3->read_mac_secret_size);
412 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
413 s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
415 s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
416 if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s))
418 else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL)
420 dd = s->enc_write_ctx;
421 if (SSL_IS_DTLS(s)) {
422 mac_ctx = EVP_MD_CTX_create();
425 s->write_hash = mac_ctx;
427 mac_ctx = ssl_replace_hash(&s->write_hash, NULL);
428 #ifndef OPENSSL_NO_COMP
429 if (s->compress != NULL) {
430 COMP_CTX_free(s->compress);
434 s->compress = COMP_CTX_new(comp->method);
435 if (s->compress == NULL) {
436 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,
437 SSL_R_COMPRESSION_LIBRARY_ERROR);
443 * this is done by dtls1_reset_seq_numbers for DTLS
446 memset(&(s->s3->write_sequence[0]), 0, 8);
447 mac_secret = &(s->s3->write_mac_secret[0]);
448 mac_secret_size = &(s->s3->write_mac_secret_size);
452 EVP_CIPHER_CTX_cleanup(dd);
454 p = s->s3->tmp.key_block;
455 i = *mac_secret_size = s->s3->tmp.new_mac_secret_size;
457 cl = EVP_CIPHER_key_length(c);
458 j = is_export ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
459 cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
460 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
461 /* If GCM mode only part of IV comes from PRF */
462 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
463 k = EVP_GCM_TLS_FIXED_IV_LEN;
465 k = EVP_CIPHER_iv_length(c);
466 if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
467 (which == SSL3_CHANGE_CIPHER_SERVER_READ)) {
474 exp_label = (unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST;
475 exp_label_len = TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE;
485 exp_label = (unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST;
486 exp_label_len = TLS_MD_SERVER_WRITE_KEY_CONST_SIZE;
490 if (n > s->s3->tmp.key_block_length) {
491 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
495 memcpy(mac_secret, ms, i);
497 if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) {
498 mac_key = EVP_PKEY_new_mac_key(mac_type, NULL,
499 mac_secret, *mac_secret_size);
500 EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key);
501 EVP_PKEY_free(mac_key);
504 printf("which = %04X\nmac key=", which);
507 for (z = 0; z < i; z++)
508 printf("%02X%c", ms[z], ((z + 1) % 16) ? ' ' : '\n');
513 * In here I set both the read and write key/iv to the same value
514 * since only the correct one will be used :-).
516 if (!tls1_PRF(ssl_get_algorithm2(s),
517 exp_label, exp_label_len,
518 s->s3->client_random, SSL3_RANDOM_SIZE,
519 s->s3->server_random, SSL3_RANDOM_SIZE,
521 key, j, tmp1, tmp2, EVP_CIPHER_key_length(c)))
526 if (!tls1_PRF(ssl_get_algorithm2(s),
527 TLS_MD_IV_BLOCK_CONST, TLS_MD_IV_BLOCK_CONST_SIZE,
528 s->s3->client_random, SSL3_RANDOM_SIZE,
529 s->s3->server_random, SSL3_RANDOM_SIZE,
530 NULL, 0, NULL, 0, empty, 0, iv1, iv2, k * 2))
541 fprintf(stderr, "EVP_CipherInit_ex(dd,c,key=,iv=,which)\n");
542 fprintf(stderr, "\tkey= ");
543 for (i = 0; i < c->key_len; i++)
544 fprintf(stderr, "%02x", key[i]);
545 fprintf(stderr, "\n");
546 fprintf(stderr, "\t iv= ");
547 for (i = 0; i < c->iv_len; i++)
548 fprintf(stderr, "%02x", iv[i]);
549 fprintf(stderr, "\n");
551 #endif /* KSSL_DEBUG */
553 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) {
554 if (!EVP_CipherInit_ex(dd, c, NULL, key, NULL, (which & SSL3_CC_WRITE))
555 || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GCM_SET_IV_FIXED, k, iv)) {
556 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
560 if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) {
561 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
565 /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
566 if ((EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER) && *mac_secret_size
567 && !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_MAC_KEY,
568 *mac_secret_size, mac_secret)) {
569 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
572 #ifdef OPENSSL_SSL_TRACE_CRYPTO
573 if (s->msg_callback) {
574 int wh = which & SSL3_CC_WRITE ? TLS1_RT_CRYPTO_WRITE : 0;
575 if (*mac_secret_size)
576 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_MAC,
577 mac_secret, *mac_secret_size,
578 s, s->msg_callback_arg);
580 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_KEY,
581 key, c->key_len, s, s->msg_callback_arg);
583 if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE)
584 wh |= TLS1_RT_CRYPTO_FIXED_IV;
586 wh |= TLS1_RT_CRYPTO_IV;
587 s->msg_callback(2, s->version, wh, iv, k, s, s->msg_callback_arg);
593 printf("which = %04X\nkey=", which);
596 for (z = 0; z < EVP_CIPHER_key_length(c); z++)
597 printf("%02X%c", key[z], ((z + 1) % 16) ? ' ' : '\n');
602 for (z = 0; z < k; z++)
603 printf("%02X%c", iv[z], ((z + 1) % 16) ? ' ' : '\n');
608 OPENSSL_cleanse(tmp1, sizeof(tmp1));
609 OPENSSL_cleanse(tmp2, sizeof(tmp1));
610 OPENSSL_cleanse(iv1, sizeof(iv1));
611 OPENSSL_cleanse(iv2, sizeof(iv2));
614 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE);
619 int tls1_setup_key_block(SSL *s)
621 unsigned char *p1, *p2 = NULL;
626 int mac_type = NID_undef, mac_secret_size = 0;
630 fprintf(stderr, "tls1_setup_key_block()\n");
631 #endif /* KSSL_DEBUG */
633 if (s->s3->tmp.key_block_length != 0)
636 if (!ssl_cipher_get_evp
637 (s->session, &c, &hash, &mac_type, &mac_secret_size, &comp,
639 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
643 s->s3->tmp.new_sym_enc = c;
644 s->s3->tmp.new_hash = hash;
645 s->s3->tmp.new_mac_pkey_type = mac_type;
646 s->s3->tmp.new_mac_secret_size = mac_secret_size;
648 EVP_CIPHER_key_length(c) + mac_secret_size + EVP_CIPHER_iv_length(c);
651 ssl3_cleanup_key_block(s);
653 if ((p1 = (unsigned char *)OPENSSL_malloc(num)) == NULL) {
654 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
658 s->s3->tmp.key_block_length = num;
659 s->s3->tmp.key_block = p1;
661 if ((p2 = (unsigned char *)OPENSSL_malloc(num)) == NULL) {
662 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
667 printf("client random\n");
670 for (z = 0; z < SSL3_RANDOM_SIZE; z++)
671 printf("%02X%c", s->s3->client_random[z],
672 ((z + 1) % 16) ? ' ' : '\n');
674 printf("server random\n");
677 for (z = 0; z < SSL3_RANDOM_SIZE; z++)
678 printf("%02X%c", s->s3->server_random[z],
679 ((z + 1) % 16) ? ' ' : '\n');
681 printf("master key\n");
684 for (z = 0; z < s->session->master_key_length; z++)
685 printf("%02X%c", s->session->master_key[z],
686 ((z + 1) % 16) ? ' ' : '\n');
689 if (!tls1_generate_key_block(s, p1, p2, num))
692 printf("\nkey block\n");
695 for (z = 0; z < num; z++)
696 printf("%02X%c", p1[z], ((z + 1) % 16) ? ' ' : '\n');
700 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)
701 && s->method->version <= TLS1_VERSION) {
703 * enable vulnerability countermeasure for CBC ciphers with known-IV
704 * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
706 s->s3->need_empty_fragments = 1;
708 if (s->session->cipher != NULL) {
709 if (s->session->cipher->algorithm_enc == SSL_eNULL)
710 s->s3->need_empty_fragments = 0;
712 #ifndef OPENSSL_NO_RC4
713 if (s->session->cipher->algorithm_enc == SSL_RC4)
714 s->s3->need_empty_fragments = 0;
722 OPENSSL_cleanse(p2, num);
729 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *out)
732 EVP_MD_CTX ctx, *d = NULL;
735 if (s->s3->handshake_buffer)
736 if (!ssl3_digest_cached_records(s))
739 for (i = 0; i < SSL_MAX_DIGEST; i++) {
740 if (s->s3->handshake_dgst[i]
741 && EVP_MD_CTX_type(s->s3->handshake_dgst[i]) == md_nid) {
742 d = s->s3->handshake_dgst[i];
747 SSLerr(SSL_F_TLS1_CERT_VERIFY_MAC, SSL_R_NO_REQUIRED_DIGEST);
751 EVP_MD_CTX_init(&ctx);
752 EVP_MD_CTX_copy_ex(&ctx, d);
753 EVP_DigestFinal_ex(&ctx, out, &ret);
754 EVP_MD_CTX_cleanup(&ctx);
758 int tls1_final_finish_mac(SSL *s, const char *str, int slen,
762 unsigned char hash[2 * EVP_MAX_MD_SIZE];
763 unsigned char buf2[12];
765 if (s->s3->handshake_buffer)
766 if (!ssl3_digest_cached_records(s))
769 hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
774 if (!tls1_PRF(ssl_get_algorithm2(s),
775 str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0,
776 s->session->master_key, s->session->master_key_length,
777 out, buf2, sizeof buf2))
779 OPENSSL_cleanse(hash, hashlen);
780 OPENSSL_cleanse(buf2, sizeof(buf2));
784 int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
787 unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
790 fprintf(stderr, "tls1_generate_master_secret(%p,%p, %p, %d)\n", s, out, p,
792 #endif /* KSSL_DEBUG */
794 if (s->session->flags & SSL_SESS_FLAG_EXTMS) {
795 unsigned char hash[EVP_MAX_MD_SIZE * 2];
797 /* If we don't have any digests cache records */
798 if (s->s3->handshake_buffer) {
800 * keep record buffer: this wont affect client auth because we're
801 * freezing the buffer at the same point (after client key
802 * exchange and before certificate verify)
804 s->s3->flags |= TLS1_FLAGS_KEEP_HANDSHAKE;
805 if(!ssl3_digest_cached_records(s))
808 hashlen = ssl_handshake_hash(s, hash, sizeof(hash));
810 fprintf(stderr, "Handshake hashes:\n");
811 BIO_dump_fp(stderr, (char *)hash, hashlen);
813 tls1_PRF(ssl_get_algorithm2(s),
814 TLS_MD_EXTENDED_MASTER_SECRET_CONST,
815 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE,
819 NULL, 0, p, len, s->session->master_key, buff, sizeof buff);
820 OPENSSL_cleanse(hash, hashlen);
822 tls1_PRF(ssl_get_algorithm2(s),
823 TLS_MD_MASTER_SECRET_CONST,
824 TLS_MD_MASTER_SECRET_CONST_SIZE,
825 s->s3->client_random, SSL3_RANDOM_SIZE,
827 s->s3->server_random, SSL3_RANDOM_SIZE,
828 NULL, 0, p, len, s->session->master_key, buff, sizeof buff);
830 OPENSSL_cleanse(buff, sizeof buff);
832 fprintf(stderr, "Premaster Secret:\n");
833 BIO_dump_fp(stderr, (char *)p, len);
834 fprintf(stderr, "Client Random:\n");
835 BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE);
836 fprintf(stderr, "Server Random:\n");
837 BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE);
838 fprintf(stderr, "Master Secret:\n");
839 BIO_dump_fp(stderr, (char *)s->session->master_key,
840 SSL3_MASTER_SECRET_SIZE);
843 #ifdef OPENSSL_SSL_TRACE_CRYPTO
844 if (s->msg_callback) {
845 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER,
846 p, len, s, s->msg_callback_arg);
847 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM,
848 s->s3->client_random, SSL3_RANDOM_SIZE,
849 s, s->msg_callback_arg);
850 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_SERVER_RANDOM,
851 s->s3->server_random, SSL3_RANDOM_SIZE,
852 s, s->msg_callback_arg);
853 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_MASTER,
854 s->session->master_key,
855 SSL3_MASTER_SECRET_SIZE, s, s->msg_callback_arg);
860 fprintf(stderr, "tls1_generate_master_secret() complete\n");
861 #endif /* KSSL_DEBUG */
862 return (SSL3_MASTER_SECRET_SIZE);
865 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
866 const char *label, size_t llen,
867 const unsigned char *context,
868 size_t contextlen, int use_context)
871 unsigned char *val = NULL;
872 size_t vallen, currentvalpos;
876 fprintf(stderr, "tls1_export_keying_material(%p,%p,%lu,%s,%lu,%p,%lu)\n",
877 s, out, olen, label, llen, context, contextlen);
878 #endif /* KSSL_DEBUG */
880 buff = OPENSSL_malloc(olen);
885 * construct PRF arguments we construct the PRF argument ourself rather
886 * than passing separate values into the TLS PRF to ensure that the
887 * concatenation of values does not create a prohibited label.
889 vallen = llen + SSL3_RANDOM_SIZE * 2;
891 vallen += 2 + contextlen;
894 val = OPENSSL_malloc(vallen);
898 memcpy(val + currentvalpos, (unsigned char *)label, llen);
899 currentvalpos += llen;
900 memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE);
901 currentvalpos += SSL3_RANDOM_SIZE;
902 memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE);
903 currentvalpos += SSL3_RANDOM_SIZE;
906 val[currentvalpos] = (contextlen >> 8) & 0xff;
908 val[currentvalpos] = contextlen & 0xff;
910 if ((contextlen > 0) || (context != NULL)) {
911 memcpy(val + currentvalpos, context, contextlen);
916 * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
917 * label len) = 15, so size of val > max(prohibited label len) = 15 and
918 * the comparisons won't have buffer overflow
920 if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST,
921 TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0)
923 if (memcmp(val, TLS_MD_SERVER_FINISH_CONST,
924 TLS_MD_SERVER_FINISH_CONST_SIZE) == 0)
926 if (memcmp(val, TLS_MD_MASTER_SECRET_CONST,
927 TLS_MD_MASTER_SECRET_CONST_SIZE) == 0)
929 if (memcmp(val, TLS_MD_EXTENDED_MASTER_SECRET_CONST,
930 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE) == 0)
932 if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST,
933 TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0)
936 rv = tls1_PRF(ssl_get_algorithm2(s),
942 s->session->master_key, s->session->master_key_length,
944 OPENSSL_cleanse(val, vallen);
945 OPENSSL_cleanse(buff, olen);
948 fprintf(stderr, "tls1_export_keying_material() complete\n");
949 #endif /* KSSL_DEBUG */
952 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL,
953 SSL_R_TLS_ILLEGAL_EXPORTER_LABEL);
957 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE);
967 int tls1_alert_code(int code)
970 case SSL_AD_CLOSE_NOTIFY:
971 return (SSL3_AD_CLOSE_NOTIFY);
972 case SSL_AD_UNEXPECTED_MESSAGE:
973 return (SSL3_AD_UNEXPECTED_MESSAGE);
974 case SSL_AD_BAD_RECORD_MAC:
975 return (SSL3_AD_BAD_RECORD_MAC);
976 case SSL_AD_DECRYPTION_FAILED:
977 return (TLS1_AD_DECRYPTION_FAILED);
978 case SSL_AD_RECORD_OVERFLOW:
979 return (TLS1_AD_RECORD_OVERFLOW);
980 case SSL_AD_DECOMPRESSION_FAILURE:
981 return (SSL3_AD_DECOMPRESSION_FAILURE);
982 case SSL_AD_HANDSHAKE_FAILURE:
983 return (SSL3_AD_HANDSHAKE_FAILURE);
984 case SSL_AD_NO_CERTIFICATE:
986 case SSL_AD_BAD_CERTIFICATE:
987 return (SSL3_AD_BAD_CERTIFICATE);
988 case SSL_AD_UNSUPPORTED_CERTIFICATE:
989 return (SSL3_AD_UNSUPPORTED_CERTIFICATE);
990 case SSL_AD_CERTIFICATE_REVOKED:
991 return (SSL3_AD_CERTIFICATE_REVOKED);
992 case SSL_AD_CERTIFICATE_EXPIRED:
993 return (SSL3_AD_CERTIFICATE_EXPIRED);
994 case SSL_AD_CERTIFICATE_UNKNOWN:
995 return (SSL3_AD_CERTIFICATE_UNKNOWN);
996 case SSL_AD_ILLEGAL_PARAMETER:
997 return (SSL3_AD_ILLEGAL_PARAMETER);
998 case SSL_AD_UNKNOWN_CA:
999 return (TLS1_AD_UNKNOWN_CA);
1000 case SSL_AD_ACCESS_DENIED:
1001 return (TLS1_AD_ACCESS_DENIED);
1002 case SSL_AD_DECODE_ERROR:
1003 return (TLS1_AD_DECODE_ERROR);
1004 case SSL_AD_DECRYPT_ERROR:
1005 return (TLS1_AD_DECRYPT_ERROR);
1006 case SSL_AD_EXPORT_RESTRICTION:
1007 return (TLS1_AD_EXPORT_RESTRICTION);
1008 case SSL_AD_PROTOCOL_VERSION:
1009 return (TLS1_AD_PROTOCOL_VERSION);
1010 case SSL_AD_INSUFFICIENT_SECURITY:
1011 return (TLS1_AD_INSUFFICIENT_SECURITY);
1012 case SSL_AD_INTERNAL_ERROR:
1013 return (TLS1_AD_INTERNAL_ERROR);
1014 case SSL_AD_USER_CANCELLED:
1015 return (TLS1_AD_USER_CANCELLED);
1016 case SSL_AD_NO_RENEGOTIATION:
1017 return (TLS1_AD_NO_RENEGOTIATION);
1018 case SSL_AD_UNSUPPORTED_EXTENSION:
1019 return (TLS1_AD_UNSUPPORTED_EXTENSION);
1020 case SSL_AD_CERTIFICATE_UNOBTAINABLE:
1021 return (TLS1_AD_CERTIFICATE_UNOBTAINABLE);
1022 case SSL_AD_UNRECOGNIZED_NAME:
1023 return (TLS1_AD_UNRECOGNIZED_NAME);
1024 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE:
1025 return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
1026 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE:
1027 return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
1028 case SSL_AD_UNKNOWN_PSK_IDENTITY:
1029 return (TLS1_AD_UNKNOWN_PSK_IDENTITY);
1030 case SSL_AD_INAPPROPRIATE_FALLBACK:
1031 return (TLS1_AD_INAPPROPRIATE_FALLBACK);