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(long digest_mask
,
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 int len
, i
, idx
, count
;
249 const unsigned char *S1
;
254 /* Count number of digests and partition sec evenly */
256 for (idx
= 0; ssl_get_handshake_digest(idx
, &m
, &md
); idx
++) {
257 if ((m
<< TLS1_PRF_DGST_SHIFT
) & digest_mask
)
261 /* Should never happen */
262 SSLerr(SSL_F_TLS1_PRF
, ERR_R_INTERNAL_ERROR
);
269 memset(out1
, 0, olen
);
270 for (idx
= 0; ssl_get_handshake_digest(idx
, &m
, &md
); idx
++) {
271 if ((m
<< TLS1_PRF_DGST_SHIFT
) & digest_mask
) {
273 SSLerr(SSL_F_TLS1_PRF
, SSL_R_UNSUPPORTED_DIGEST_TYPE
);
276 if (!tls1_P_hash(md
, S1
, len
+ (slen
& 1),
277 seed1
, seed1_len
, seed2
, seed2_len
, seed3
,
278 seed3_len
, seed4
, seed4_len
, seed5
, seed5_len
,
282 for (i
= 0; i
< olen
; i
++) {
292 static int tls1_generate_key_block(SSL
*s
, unsigned char *km
,
293 unsigned char *tmp
, int num
)
296 ret
= tls1_PRF(ssl_get_algorithm2(s
),
297 TLS_MD_KEY_EXPANSION_CONST
,
298 TLS_MD_KEY_EXPANSION_CONST_SIZE
, s
->s3
->server_random
,
299 SSL3_RANDOM_SIZE
, s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
300 NULL
, 0, NULL
, 0, s
->session
->master_key
,
301 s
->session
->master_key_length
, km
, tmp
, num
);
306 int tls1_change_cipher_state(SSL
*s
, int which
)
308 static const unsigned char empty
[] = "";
309 unsigned char *p
, *mac_secret
;
310 unsigned char *exp_label
;
311 unsigned char tmp1
[EVP_MAX_KEY_LENGTH
];
312 unsigned char tmp2
[EVP_MAX_KEY_LENGTH
];
313 unsigned char iv1
[EVP_MAX_IV_LENGTH
* 2];
314 unsigned char iv2
[EVP_MAX_IV_LENGTH
* 2];
315 unsigned char *ms
, *key
, *iv
;
319 #ifndef OPENSSL_NO_COMP
320 const SSL_COMP
*comp
;
324 int *mac_secret_size
;
327 int is_export
, n
, i
, j
, k
, exp_label_len
, cl
;
330 is_export
= SSL_C_IS_EXPORT(s
->s3
->tmp
.new_cipher
);
331 c
= s
->s3
->tmp
.new_sym_enc
;
332 m
= s
->s3
->tmp
.new_hash
;
333 mac_type
= s
->s3
->tmp
.new_mac_pkey_type
;
334 #ifndef OPENSSL_NO_COMP
335 comp
= s
->s3
->tmp
.new_compression
;
338 if (which
& SSL3_CC_READ
) {
339 if (s
->s3
->tmp
.new_cipher
->algorithm2
& TLS1_STREAM_MAC
)
340 s
->mac_flags
|= SSL_MAC_FLAG_READ_MAC_STREAM
;
342 s
->mac_flags
&= ~SSL_MAC_FLAG_READ_MAC_STREAM
;
344 if (s
->enc_read_ctx
!= NULL
)
346 else if ((s
->enc_read_ctx
=
347 OPENSSL_malloc(sizeof(*s
->enc_read_ctx
))) == NULL
)
351 * make sure it's intialized in case we exit later with an error
353 EVP_CIPHER_CTX_init(s
->enc_read_ctx
);
354 dd
= s
->enc_read_ctx
;
355 mac_ctx
= ssl_replace_hash(&s
->read_hash
, NULL
);
356 #ifndef OPENSSL_NO_COMP
357 COMP_CTX_free(s
->expand
);
360 s
->expand
= COMP_CTX_new(comp
->method
);
361 if (s
->expand
== NULL
) {
362 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
,
363 SSL_R_COMPRESSION_LIBRARY_ERROR
);
366 if (!RECORD_LAYER_setup_comp_buffer(&s
->rlayer
))
371 * this is done by dtls1_reset_seq_numbers for DTLS
374 RECORD_LAYER_reset_read_sequence(&s
->rlayer
);
375 mac_secret
= &(s
->s3
->read_mac_secret
[0]);
376 mac_secret_size
= &(s
->s3
->read_mac_secret_size
);
378 if (s
->s3
->tmp
.new_cipher
->algorithm2
& TLS1_STREAM_MAC
)
379 s
->mac_flags
|= SSL_MAC_FLAG_WRITE_MAC_STREAM
;
381 s
->mac_flags
&= ~SSL_MAC_FLAG_WRITE_MAC_STREAM
;
382 if (s
->enc_write_ctx
!= NULL
&& !SSL_IS_DTLS(s
))
384 else if ((s
->enc_write_ctx
= EVP_CIPHER_CTX_new()) == NULL
)
386 dd
= s
->enc_write_ctx
;
387 if (SSL_IS_DTLS(s
)) {
388 mac_ctx
= EVP_MD_CTX_create();
391 s
->write_hash
= mac_ctx
;
393 mac_ctx
= ssl_replace_hash(&s
->write_hash
, NULL
);
394 #ifndef OPENSSL_NO_COMP
395 COMP_CTX_free(s
->compress
);
398 s
->compress
= COMP_CTX_new(comp
->method
);
399 if (s
->compress
== NULL
) {
400 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
,
401 SSL_R_COMPRESSION_LIBRARY_ERROR
);
407 * this is done by dtls1_reset_seq_numbers for DTLS
410 RECORD_LAYER_reset_write_sequence(&s
->rlayer
);
411 mac_secret
= &(s
->s3
->write_mac_secret
[0]);
412 mac_secret_size
= &(s
->s3
->write_mac_secret_size
);
416 EVP_CIPHER_CTX_cleanup(dd
);
418 p
= s
->s3
->tmp
.key_block
;
419 i
= *mac_secret_size
= s
->s3
->tmp
.new_mac_secret_size
;
421 cl
= EVP_CIPHER_key_length(c
);
422 j
= is_export
? (cl
< SSL_C_EXPORT_KEYLENGTH(s
->s3
->tmp
.new_cipher
) ?
423 cl
: SSL_C_EXPORT_KEYLENGTH(s
->s3
->tmp
.new_cipher
)) : cl
;
424 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
425 /* If GCM/CCM mode only part of IV comes from PRF */
426 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
)
427 k
= EVP_GCM_TLS_FIXED_IV_LEN
;
428 else if (EVP_CIPHER_mode(c
) == EVP_CIPH_CCM_MODE
)
429 k
= EVP_CCM_TLS_FIXED_IV_LEN
;
431 k
= EVP_CIPHER_iv_length(c
);
432 if ((which
== SSL3_CHANGE_CIPHER_CLIENT_WRITE
) ||
433 (which
== SSL3_CHANGE_CIPHER_SERVER_READ
)) {
440 exp_label
= (unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST
;
441 exp_label_len
= TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE
;
451 exp_label
= (unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST
;
452 exp_label_len
= TLS_MD_SERVER_WRITE_KEY_CONST_SIZE
;
456 if (n
> s
->s3
->tmp
.key_block_length
) {
457 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
461 memcpy(mac_secret
, ms
, i
);
463 if (!(EVP_CIPHER_flags(c
) & EVP_CIPH_FLAG_AEAD_CIPHER
)) {
464 mac_key
= EVP_PKEY_new_mac_key(mac_type
, NULL
,
465 mac_secret
, *mac_secret_size
);
466 EVP_DigestSignInit(mac_ctx
, NULL
, m
, NULL
, mac_key
);
467 EVP_PKEY_free(mac_key
);
470 printf("which = %04X\nmac key=", which
);
473 for (z
= 0; z
< i
; z
++)
474 printf("%02X%c", ms
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
479 * In here I set both the read and write key/iv to the same value
480 * since only the correct one will be used :-).
482 if (!tls1_PRF(ssl_get_algorithm2(s
),
483 exp_label
, exp_label_len
,
484 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
485 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
487 key
, j
, tmp1
, tmp2
, EVP_CIPHER_key_length(c
)))
492 if (!tls1_PRF(ssl_get_algorithm2(s
),
493 TLS_MD_IV_BLOCK_CONST
, TLS_MD_IV_BLOCK_CONST_SIZE
,
494 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
495 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
496 NULL
, 0, NULL
, 0, empty
, 0, iv1
, iv2
, k
* 2))
505 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
) {
506 if (!EVP_CipherInit_ex(dd
, c
, NULL
, key
, NULL
, (which
& SSL3_CC_WRITE
))
507 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_GCM_SET_IV_FIXED
, k
, iv
)) {
508 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
511 } else if (EVP_CIPHER_mode(c
) == EVP_CIPH_CCM_MODE
) {
513 if (!EVP_CipherInit_ex(dd
, c
, NULL
, NULL
, NULL
, (which
& SSL3_CC_WRITE
))
514 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_IVLEN
, 12, NULL
)
515 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_TAG
, taglen
, NULL
)
516 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_CCM_SET_IV_FIXED
, k
, iv
)
517 || !EVP_CipherInit_ex(dd
, NULL
, NULL
, key
, NULL
, -1)) {
518 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
522 if (!EVP_CipherInit_ex(dd
, c
, NULL
, key
, iv
, (which
& SSL3_CC_WRITE
))) {
523 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
527 /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
528 if ((EVP_CIPHER_flags(c
) & EVP_CIPH_FLAG_AEAD_CIPHER
) && *mac_secret_size
529 && !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_MAC_KEY
,
530 *mac_secret_size
, mac_secret
)) {
531 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
534 #ifdef OPENSSL_SSL_TRACE_CRYPTO
535 if (s
->msg_callback
) {
536 int wh
= which
& SSL3_CC_WRITE
? TLS1_RT_CRYPTO_WRITE
: 0;
537 if (*mac_secret_size
)
538 s
->msg_callback(2, s
->version
, wh
| TLS1_RT_CRYPTO_MAC
,
539 mac_secret
, *mac_secret_size
,
540 s
, s
->msg_callback_arg
);
542 s
->msg_callback(2, s
->version
, wh
| TLS1_RT_CRYPTO_KEY
,
543 key
, c
->key_len
, s
, s
->msg_callback_arg
);
545 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
)
546 wh
|= TLS1_RT_CRYPTO_FIXED_IV
;
548 wh
|= TLS1_RT_CRYPTO_IV
;
549 s
->msg_callback(2, s
->version
, wh
, iv
, k
, s
, s
->msg_callback_arg
);
555 printf("which = %04X\nkey=", which
);
558 for (z
= 0; z
< EVP_CIPHER_key_length(c
); z
++)
559 printf("%02X%c", key
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
564 for (z
= 0; z
< k
; z
++)
565 printf("%02X%c", iv
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
570 OPENSSL_cleanse(tmp1
, sizeof(tmp1
));
571 OPENSSL_cleanse(tmp2
, sizeof(tmp1
));
572 OPENSSL_cleanse(iv1
, sizeof(iv1
));
573 OPENSSL_cleanse(iv2
, sizeof(iv2
));
576 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_MALLOC_FAILURE
);
578 OPENSSL_cleanse(tmp1
, sizeof(tmp1
));
579 OPENSSL_cleanse(tmp2
, sizeof(tmp1
));
580 OPENSSL_cleanse(iv1
, sizeof(iv1
));
581 OPENSSL_cleanse(iv2
, sizeof(iv2
));
585 int tls1_setup_key_block(SSL
*s
)
587 unsigned char *p1
, *p2
= NULL
;
592 int mac_type
= NID_undef
, mac_secret_size
= 0;
595 if (s
->s3
->tmp
.key_block_length
!= 0)
598 if (!ssl_cipher_get_evp
599 (s
->session
, &c
, &hash
, &mac_type
, &mac_secret_size
, &comp
,
601 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, SSL_R_CIPHER_OR_HASH_UNAVAILABLE
);
605 s
->s3
->tmp
.new_sym_enc
= c
;
606 s
->s3
->tmp
.new_hash
= hash
;
607 s
->s3
->tmp
.new_mac_pkey_type
= mac_type
;
608 s
->s3
->tmp
.new_mac_secret_size
= mac_secret_size
;
610 EVP_CIPHER_key_length(c
) + mac_secret_size
+ EVP_CIPHER_iv_length(c
);
613 ssl3_cleanup_key_block(s
);
615 if ((p1
= OPENSSL_malloc(num
)) == NULL
) {
616 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, ERR_R_MALLOC_FAILURE
);
620 s
->s3
->tmp
.key_block_length
= num
;
621 s
->s3
->tmp
.key_block
= p1
;
623 if ((p2
= OPENSSL_malloc(num
)) == NULL
) {
624 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, ERR_R_MALLOC_FAILURE
);
629 printf("client random\n");
632 for (z
= 0; z
< SSL3_RANDOM_SIZE
; z
++)
633 printf("%02X%c", s
->s3
->client_random
[z
],
634 ((z
+ 1) % 16) ? ' ' : '\n');
636 printf("server random\n");
639 for (z
= 0; z
< SSL3_RANDOM_SIZE
; z
++)
640 printf("%02X%c", s
->s3
->server_random
[z
],
641 ((z
+ 1) % 16) ? ' ' : '\n');
643 printf("master key\n");
646 for (z
= 0; z
< s
->session
->master_key_length
; z
++)
647 printf("%02X%c", s
->session
->master_key
[z
],
648 ((z
+ 1) % 16) ? ' ' : '\n');
651 if (!tls1_generate_key_block(s
, p1
, p2
, num
))
654 printf("\nkey block\n");
657 for (z
= 0; z
< num
; z
++)
658 printf("%02X%c", p1
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
662 if (!(s
->options
& SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
)
663 && s
->method
->version
<= TLS1_VERSION
) {
665 * enable vulnerability countermeasure for CBC ciphers with known-IV
666 * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
668 s
->s3
->need_empty_fragments
= 1;
670 if (s
->session
->cipher
!= NULL
) {
671 if (s
->session
->cipher
->algorithm_enc
== SSL_eNULL
)
672 s
->s3
->need_empty_fragments
= 0;
674 #ifndef OPENSSL_NO_RC4
675 if (s
->session
->cipher
->algorithm_enc
== SSL_RC4
)
676 s
->s3
->need_empty_fragments
= 0;
683 OPENSSL_clear_free(p2
, num
);
688 int tls1_cert_verify_mac(SSL
*s
, int md_nid
, unsigned char *out
)
691 EVP_MD_CTX ctx
, *d
= NULL
;
694 if (!ssl3_digest_cached_records(s
, 0))
697 for (i
= 0; i
< SSL_MAX_DIGEST
; i
++) {
698 if (s
->s3
->handshake_dgst
[i
]
699 && EVP_MD_CTX_type(s
->s3
->handshake_dgst
[i
]) == md_nid
) {
700 d
= s
->s3
->handshake_dgst
[i
];
705 SSLerr(SSL_F_TLS1_CERT_VERIFY_MAC
, SSL_R_NO_REQUIRED_DIGEST
);
709 EVP_MD_CTX_init(&ctx
);
710 EVP_MD_CTX_copy_ex(&ctx
, d
);
711 EVP_DigestFinal_ex(&ctx
, out
, &ret
);
712 EVP_MD_CTX_cleanup(&ctx
);
716 int tls1_final_finish_mac(SSL
*s
, const char *str
, int slen
,
720 unsigned char hash
[2 * EVP_MAX_MD_SIZE
];
721 unsigned char buf2
[12];
723 if (!ssl3_digest_cached_records(s
, 0))
726 hashlen
= ssl_handshake_hash(s
, hash
, sizeof(hash
));
731 if (!tls1_PRF(ssl_get_algorithm2(s
),
732 str
, slen
, hash
, hashlen
, NULL
, 0, NULL
, 0, NULL
, 0,
733 s
->session
->master_key
, s
->session
->master_key_length
,
734 out
, buf2
, sizeof buf2
))
736 OPENSSL_cleanse(hash
, hashlen
);
737 OPENSSL_cleanse(buf2
, sizeof(buf2
));
741 int tls1_generate_master_secret(SSL
*s
, unsigned char *out
, unsigned char *p
,
744 unsigned char buff
[SSL_MAX_MASTER_KEY_LENGTH
];
746 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
) {
747 unsigned char hash
[EVP_MAX_MD_SIZE
* 2];
749 /* Digest cached records keeping record buffer (if present):
750 * this wont affect client auth because we're freezing the buffer
751 * at the same point (after client key exchange and before certificate
754 if (!ssl3_digest_cached_records(s
, 1))
756 hashlen
= ssl_handshake_hash(s
, hash
, sizeof(hash
));
758 fprintf(stderr
, "Handshake hashes:\n");
759 BIO_dump_fp(stderr
, (char *)hash
, hashlen
);
761 tls1_PRF(ssl_get_algorithm2(s
),
762 TLS_MD_EXTENDED_MASTER_SECRET_CONST
,
763 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE
,
767 NULL
, 0, p
, len
, s
->session
->master_key
, buff
, sizeof buff
);
768 OPENSSL_cleanse(hash
, hashlen
);
770 tls1_PRF(ssl_get_algorithm2(s
),
771 TLS_MD_MASTER_SECRET_CONST
,
772 TLS_MD_MASTER_SECRET_CONST_SIZE
,
773 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
775 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
776 NULL
, 0, p
, len
, s
->session
->master_key
, buff
, sizeof buff
);
778 OPENSSL_cleanse(buff
, sizeof buff
);
780 fprintf(stderr
, "Premaster Secret:\n");
781 BIO_dump_fp(stderr
, (char *)p
, len
);
782 fprintf(stderr
, "Client Random:\n");
783 BIO_dump_fp(stderr
, (char *)s
->s3
->client_random
, SSL3_RANDOM_SIZE
);
784 fprintf(stderr
, "Server Random:\n");
785 BIO_dump_fp(stderr
, (char *)s
->s3
->server_random
, SSL3_RANDOM_SIZE
);
786 fprintf(stderr
, "Master Secret:\n");
787 BIO_dump_fp(stderr
, (char *)s
->session
->master_key
,
788 SSL3_MASTER_SECRET_SIZE
);
791 #ifdef OPENSSL_SSL_TRACE_CRYPTO
792 if (s
->msg_callback
) {
793 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_PREMASTER
,
794 p
, len
, s
, s
->msg_callback_arg
);
795 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_CLIENT_RANDOM
,
796 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
797 s
, s
->msg_callback_arg
);
798 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_SERVER_RANDOM
,
799 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
800 s
, s
->msg_callback_arg
);
801 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_MASTER
,
802 s
->session
->master_key
,
803 SSL3_MASTER_SECRET_SIZE
, s
, s
->msg_callback_arg
);
807 return (SSL3_MASTER_SECRET_SIZE
);
810 int tls1_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
811 const char *label
, size_t llen
,
812 const unsigned char *context
,
813 size_t contextlen
, int use_context
)
816 unsigned char *val
= NULL
;
817 size_t vallen
= 0, currentvalpos
;
820 buff
= OPENSSL_malloc(olen
);
825 * construct PRF arguments we construct the PRF argument ourself rather
826 * than passing separate values into the TLS PRF to ensure that the
827 * concatenation of values does not create a prohibited label.
829 vallen
= llen
+ SSL3_RANDOM_SIZE
* 2;
831 vallen
+= 2 + contextlen
;
834 val
= OPENSSL_malloc(vallen
);
838 memcpy(val
+ currentvalpos
, (unsigned char *)label
, llen
);
839 currentvalpos
+= llen
;
840 memcpy(val
+ currentvalpos
, s
->s3
->client_random
, SSL3_RANDOM_SIZE
);
841 currentvalpos
+= SSL3_RANDOM_SIZE
;
842 memcpy(val
+ currentvalpos
, s
->s3
->server_random
, SSL3_RANDOM_SIZE
);
843 currentvalpos
+= SSL3_RANDOM_SIZE
;
846 val
[currentvalpos
] = (contextlen
>> 8) & 0xff;
848 val
[currentvalpos
] = contextlen
& 0xff;
850 if ((contextlen
> 0) || (context
!= NULL
)) {
851 memcpy(val
+ currentvalpos
, context
, contextlen
);
856 * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
857 * label len) = 15, so size of val > max(prohibited label len) = 15 and
858 * the comparisons won't have buffer overflow
860 if (memcmp(val
, TLS_MD_CLIENT_FINISH_CONST
,
861 TLS_MD_CLIENT_FINISH_CONST_SIZE
) == 0)
863 if (memcmp(val
, TLS_MD_SERVER_FINISH_CONST
,
864 TLS_MD_SERVER_FINISH_CONST_SIZE
) == 0)
866 if (memcmp(val
, TLS_MD_MASTER_SECRET_CONST
,
867 TLS_MD_MASTER_SECRET_CONST_SIZE
) == 0)
869 if (memcmp(val
, TLS_MD_EXTENDED_MASTER_SECRET_CONST
,
870 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE
) == 0)
872 if (memcmp(val
, TLS_MD_KEY_EXPANSION_CONST
,
873 TLS_MD_KEY_EXPANSION_CONST_SIZE
) == 0)
876 rv
= tls1_PRF(ssl_get_algorithm2(s
),
882 s
->session
->master_key
, s
->session
->master_key_length
,
887 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL
,
888 SSL_R_TLS_ILLEGAL_EXPORTER_LABEL
);
892 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL
, ERR_R_MALLOC_FAILURE
);
895 CRYPTO_clear_free(val
, vallen
);
896 CRYPTO_clear_free(buff
, olen
);
900 int tls1_alert_code(int code
)
903 case SSL_AD_CLOSE_NOTIFY
:
904 return (SSL3_AD_CLOSE_NOTIFY
);
905 case SSL_AD_UNEXPECTED_MESSAGE
:
906 return (SSL3_AD_UNEXPECTED_MESSAGE
);
907 case SSL_AD_BAD_RECORD_MAC
:
908 return (SSL3_AD_BAD_RECORD_MAC
);
909 case SSL_AD_DECRYPTION_FAILED
:
910 return (TLS1_AD_DECRYPTION_FAILED
);
911 case SSL_AD_RECORD_OVERFLOW
:
912 return (TLS1_AD_RECORD_OVERFLOW
);
913 case SSL_AD_DECOMPRESSION_FAILURE
:
914 return (SSL3_AD_DECOMPRESSION_FAILURE
);
915 case SSL_AD_HANDSHAKE_FAILURE
:
916 return (SSL3_AD_HANDSHAKE_FAILURE
);
917 case SSL_AD_NO_CERTIFICATE
:
919 case SSL_AD_BAD_CERTIFICATE
:
920 return (SSL3_AD_BAD_CERTIFICATE
);
921 case SSL_AD_UNSUPPORTED_CERTIFICATE
:
922 return (SSL3_AD_UNSUPPORTED_CERTIFICATE
);
923 case SSL_AD_CERTIFICATE_REVOKED
:
924 return (SSL3_AD_CERTIFICATE_REVOKED
);
925 case SSL_AD_CERTIFICATE_EXPIRED
:
926 return (SSL3_AD_CERTIFICATE_EXPIRED
);
927 case SSL_AD_CERTIFICATE_UNKNOWN
:
928 return (SSL3_AD_CERTIFICATE_UNKNOWN
);
929 case SSL_AD_ILLEGAL_PARAMETER
:
930 return (SSL3_AD_ILLEGAL_PARAMETER
);
931 case SSL_AD_UNKNOWN_CA
:
932 return (TLS1_AD_UNKNOWN_CA
);
933 case SSL_AD_ACCESS_DENIED
:
934 return (TLS1_AD_ACCESS_DENIED
);
935 case SSL_AD_DECODE_ERROR
:
936 return (TLS1_AD_DECODE_ERROR
);
937 case SSL_AD_DECRYPT_ERROR
:
938 return (TLS1_AD_DECRYPT_ERROR
);
939 case SSL_AD_EXPORT_RESTRICTION
:
940 return (TLS1_AD_EXPORT_RESTRICTION
);
941 case SSL_AD_PROTOCOL_VERSION
:
942 return (TLS1_AD_PROTOCOL_VERSION
);
943 case SSL_AD_INSUFFICIENT_SECURITY
:
944 return (TLS1_AD_INSUFFICIENT_SECURITY
);
945 case SSL_AD_INTERNAL_ERROR
:
946 return (TLS1_AD_INTERNAL_ERROR
);
947 case SSL_AD_USER_CANCELLED
:
948 return (TLS1_AD_USER_CANCELLED
);
949 case SSL_AD_NO_RENEGOTIATION
:
950 return (TLS1_AD_NO_RENEGOTIATION
);
951 case SSL_AD_UNSUPPORTED_EXTENSION
:
952 return (TLS1_AD_UNSUPPORTED_EXTENSION
);
953 case SSL_AD_CERTIFICATE_UNOBTAINABLE
:
954 return (TLS1_AD_CERTIFICATE_UNOBTAINABLE
);
955 case SSL_AD_UNRECOGNIZED_NAME
:
956 return (TLS1_AD_UNRECOGNIZED_NAME
);
957 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
:
958 return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
);
959 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE
:
960 return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
);
961 case SSL_AD_UNKNOWN_PSK_IDENTITY
:
962 return (TLS1_AD_UNKNOWN_PSK_IDENTITY
);
963 case SSL_AD_INAPPROPRIATE_FALLBACK
:
964 return (TLS1_AD_INAPPROPRIATE_FALLBACK
);