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
);
358 #ifndef OPENSSL_NO_COMP
359 COMP_CTX_free(s
->expand
);
362 s
->expand
= COMP_CTX_new(comp
->method
);
363 if (s
->expand
== NULL
) {
364 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
,
365 SSL_R_COMPRESSION_LIBRARY_ERROR
);
368 if (!RECORD_LAYER_setup_comp_buffer(&s
->rlayer
))
373 * this is done by dtls1_reset_seq_numbers for DTLS
376 RECORD_LAYER_reset_read_sequence(&s
->rlayer
);
377 mac_secret
= &(s
->s3
->read_mac_secret
[0]);
378 mac_secret_size
= &(s
->s3
->read_mac_secret_size
);
380 if (s
->s3
->tmp
.new_cipher
->algorithm2
& TLS1_STREAM_MAC
)
381 s
->mac_flags
|= SSL_MAC_FLAG_WRITE_MAC_STREAM
;
383 s
->mac_flags
&= ~SSL_MAC_FLAG_WRITE_MAC_STREAM
;
384 if (s
->enc_write_ctx
!= NULL
&& !SSL_IS_DTLS(s
))
386 else if ((s
->enc_write_ctx
= EVP_CIPHER_CTX_new()) == NULL
)
388 dd
= s
->enc_write_ctx
;
389 if (SSL_IS_DTLS(s
)) {
390 mac_ctx
= EVP_MD_CTX_create();
393 s
->write_hash
= mac_ctx
;
395 mac_ctx
= ssl_replace_hash(&s
->write_hash
, NULL
);
399 #ifndef OPENSSL_NO_COMP
400 COMP_CTX_free(s
->compress
);
403 s
->compress
= COMP_CTX_new(comp
->method
);
404 if (s
->compress
== NULL
) {
405 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
,
406 SSL_R_COMPRESSION_LIBRARY_ERROR
);
412 * this is done by dtls1_reset_seq_numbers for DTLS
415 RECORD_LAYER_reset_write_sequence(&s
->rlayer
);
416 mac_secret
= &(s
->s3
->write_mac_secret
[0]);
417 mac_secret_size
= &(s
->s3
->write_mac_secret_size
);
421 EVP_CIPHER_CTX_cleanup(dd
);
423 p
= s
->s3
->tmp
.key_block
;
424 i
= *mac_secret_size
= s
->s3
->tmp
.new_mac_secret_size
;
426 cl
= EVP_CIPHER_key_length(c
);
427 j
= is_export
? (cl
< SSL_C_EXPORT_KEYLENGTH(s
->s3
->tmp
.new_cipher
) ?
428 cl
: SSL_C_EXPORT_KEYLENGTH(s
->s3
->tmp
.new_cipher
)) : cl
;
429 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
430 /* If GCM/CCM mode only part of IV comes from PRF */
431 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
)
432 k
= EVP_GCM_TLS_FIXED_IV_LEN
;
433 else if (EVP_CIPHER_mode(c
) == EVP_CIPH_CCM_MODE
)
434 k
= EVP_CCM_TLS_FIXED_IV_LEN
;
436 k
= EVP_CIPHER_iv_length(c
);
437 if ((which
== SSL3_CHANGE_CIPHER_CLIENT_WRITE
) ||
438 (which
== SSL3_CHANGE_CIPHER_SERVER_READ
)) {
445 exp_label
= (unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST
;
446 exp_label_len
= TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE
;
456 exp_label
= (unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST
;
457 exp_label_len
= TLS_MD_SERVER_WRITE_KEY_CONST_SIZE
;
461 if (n
> s
->s3
->tmp
.key_block_length
) {
462 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
466 memcpy(mac_secret
, ms
, i
);
468 if (!(EVP_CIPHER_flags(c
) & EVP_CIPH_FLAG_AEAD_CIPHER
)) {
469 mac_key
= EVP_PKEY_new_mac_key(mac_type
, NULL
,
470 mac_secret
, *mac_secret_size
);
472 || EVP_DigestSignInit(mac_ctx
, NULL
, m
, NULL
, mac_key
) <= 0) {
473 EVP_PKEY_free(mac_key
);
474 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
477 EVP_PKEY_free(mac_key
);
480 printf("which = %04X\nmac key=", which
);
483 for (z
= 0; z
< i
; z
++)
484 printf("%02X%c", ms
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
489 * In here I set both the read and write key/iv to the same value
490 * since only the correct one will be used :-).
492 if (!tls1_PRF(ssl_get_algorithm2(s
),
493 exp_label
, exp_label_len
,
494 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
495 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
497 key
, j
, tmp1
, tmp2
, EVP_CIPHER_key_length(c
)))
502 if (!tls1_PRF(ssl_get_algorithm2(s
),
503 TLS_MD_IV_BLOCK_CONST
, TLS_MD_IV_BLOCK_CONST_SIZE
,
504 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
505 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
506 NULL
, 0, NULL
, 0, empty
, 0, iv1
, iv2
, k
* 2))
515 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
) {
516 if (!EVP_CipherInit_ex(dd
, c
, NULL
, key
, NULL
, (which
& SSL3_CC_WRITE
))
517 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_GCM_SET_IV_FIXED
, k
, iv
)) {
518 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
521 } else if (EVP_CIPHER_mode(c
) == EVP_CIPH_CCM_MODE
) {
523 if (s
->s3
->tmp
.new_cipher
->algorithm_enc
& (SSL_AES128CCM8
|SSL_AES256CCM8
))
527 if (!EVP_CipherInit_ex(dd
, c
, NULL
, NULL
, NULL
, (which
& SSL3_CC_WRITE
))
528 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_IVLEN
, 12, NULL
)
529 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_TAG
, taglen
, NULL
)
530 || !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_CCM_SET_IV_FIXED
, k
, iv
)
531 || !EVP_CipherInit_ex(dd
, NULL
, NULL
, key
, NULL
, -1)) {
532 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
536 if (!EVP_CipherInit_ex(dd
, c
, NULL
, key
, iv
, (which
& SSL3_CC_WRITE
))) {
537 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
541 /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */
542 if ((EVP_CIPHER_flags(c
) & EVP_CIPH_FLAG_AEAD_CIPHER
) && *mac_secret_size
543 && !EVP_CIPHER_CTX_ctrl(dd
, EVP_CTRL_AEAD_SET_MAC_KEY
,
544 *mac_secret_size
, mac_secret
)) {
545 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_INTERNAL_ERROR
);
548 #ifdef OPENSSL_SSL_TRACE_CRYPTO
549 if (s
->msg_callback
) {
550 int wh
= which
& SSL3_CC_WRITE
? TLS1_RT_CRYPTO_WRITE
: 0;
551 if (*mac_secret_size
)
552 s
->msg_callback(2, s
->version
, wh
| TLS1_RT_CRYPTO_MAC
,
553 mac_secret
, *mac_secret_size
,
554 s
, s
->msg_callback_arg
);
556 s
->msg_callback(2, s
->version
, wh
| TLS1_RT_CRYPTO_KEY
,
557 key
, c
->key_len
, s
, s
->msg_callback_arg
);
559 if (EVP_CIPHER_mode(c
) == EVP_CIPH_GCM_MODE
)
560 wh
|= TLS1_RT_CRYPTO_FIXED_IV
;
562 wh
|= TLS1_RT_CRYPTO_IV
;
563 s
->msg_callback(2, s
->version
, wh
, iv
, k
, s
, s
->msg_callback_arg
);
569 printf("which = %04X\nkey=", which
);
572 for (z
= 0; z
< EVP_CIPHER_key_length(c
); z
++)
573 printf("%02X%c", key
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
578 for (z
= 0; z
< k
; z
++)
579 printf("%02X%c", iv
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
584 OPENSSL_cleanse(tmp1
, sizeof(tmp1
));
585 OPENSSL_cleanse(tmp2
, sizeof(tmp1
));
586 OPENSSL_cleanse(iv1
, sizeof(iv1
));
587 OPENSSL_cleanse(iv2
, sizeof(iv2
));
590 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE
, ERR_R_MALLOC_FAILURE
);
592 OPENSSL_cleanse(tmp1
, sizeof(tmp1
));
593 OPENSSL_cleanse(tmp2
, sizeof(tmp1
));
594 OPENSSL_cleanse(iv1
, sizeof(iv1
));
595 OPENSSL_cleanse(iv2
, sizeof(iv2
));
599 int tls1_setup_key_block(SSL
*s
)
601 unsigned char *p1
, *p2
= NULL
;
606 int mac_type
= NID_undef
, mac_secret_size
= 0;
609 if (s
->s3
->tmp
.key_block_length
!= 0)
612 if (!ssl_cipher_get_evp
613 (s
->session
, &c
, &hash
, &mac_type
, &mac_secret_size
, &comp
,
615 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, SSL_R_CIPHER_OR_HASH_UNAVAILABLE
);
619 s
->s3
->tmp
.new_sym_enc
= c
;
620 s
->s3
->tmp
.new_hash
= hash
;
621 s
->s3
->tmp
.new_mac_pkey_type
= mac_type
;
622 s
->s3
->tmp
.new_mac_secret_size
= mac_secret_size
;
624 EVP_CIPHER_key_length(c
) + mac_secret_size
+ EVP_CIPHER_iv_length(c
);
627 ssl3_cleanup_key_block(s
);
629 if ((p1
= OPENSSL_malloc(num
)) == NULL
) {
630 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, ERR_R_MALLOC_FAILURE
);
634 s
->s3
->tmp
.key_block_length
= num
;
635 s
->s3
->tmp
.key_block
= p1
;
637 if ((p2
= OPENSSL_malloc(num
)) == NULL
) {
638 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK
, ERR_R_MALLOC_FAILURE
);
643 printf("client random\n");
646 for (z
= 0; z
< SSL3_RANDOM_SIZE
; z
++)
647 printf("%02X%c", s
->s3
->client_random
[z
],
648 ((z
+ 1) % 16) ? ' ' : '\n');
650 printf("server random\n");
653 for (z
= 0; z
< SSL3_RANDOM_SIZE
; z
++)
654 printf("%02X%c", s
->s3
->server_random
[z
],
655 ((z
+ 1) % 16) ? ' ' : '\n');
657 printf("master key\n");
660 for (z
= 0; z
< s
->session
->master_key_length
; z
++)
661 printf("%02X%c", s
->session
->master_key
[z
],
662 ((z
+ 1) % 16) ? ' ' : '\n');
665 if (!tls1_generate_key_block(s
, p1
, p2
, num
))
668 printf("\nkey block\n");
671 for (z
= 0; z
< num
; z
++)
672 printf("%02X%c", p1
[z
], ((z
+ 1) % 16) ? ' ' : '\n');
676 if (!(s
->options
& SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
)
677 && s
->method
->version
<= TLS1_VERSION
) {
679 * enable vulnerability countermeasure for CBC ciphers with known-IV
680 * problem (http://www.openssl.org/~bodo/tls-cbc.txt)
682 s
->s3
->need_empty_fragments
= 1;
684 if (s
->session
->cipher
!= NULL
) {
685 if (s
->session
->cipher
->algorithm_enc
== SSL_eNULL
)
686 s
->s3
->need_empty_fragments
= 0;
688 #ifndef OPENSSL_NO_RC4
689 if (s
->session
->cipher
->algorithm_enc
== SSL_RC4
)
690 s
->s3
->need_empty_fragments
= 0;
697 OPENSSL_clear_free(p2
, num
);
701 int tls1_final_finish_mac(SSL
*s
, const char *str
, int slen
,
705 unsigned char hash
[2 * EVP_MAX_MD_SIZE
];
706 unsigned char buf2
[12];
708 if (!ssl3_digest_cached_records(s
, 0))
711 hashlen
= ssl_handshake_hash(s
, hash
, sizeof(hash
));
716 if (!tls1_PRF(ssl_get_algorithm2(s
),
717 str
, slen
, hash
, hashlen
, NULL
, 0, NULL
, 0, NULL
, 0,
718 s
->session
->master_key
, s
->session
->master_key_length
,
719 out
, buf2
, sizeof buf2
))
721 OPENSSL_cleanse(hash
, hashlen
);
722 OPENSSL_cleanse(buf2
, sizeof(buf2
));
726 int tls1_generate_master_secret(SSL
*s
, unsigned char *out
, unsigned char *p
,
729 unsigned char buff
[SSL_MAX_MASTER_KEY_LENGTH
];
731 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
) {
732 unsigned char hash
[EVP_MAX_MD_SIZE
* 2];
734 /* Digest cached records keeping record buffer (if present):
735 * this wont affect client auth because we're freezing the buffer
736 * at the same point (after client key exchange and before certificate
739 if (!ssl3_digest_cached_records(s
, 1))
741 hashlen
= ssl_handshake_hash(s
, hash
, sizeof(hash
));
743 fprintf(stderr
, "Handshake hashes:\n");
744 BIO_dump_fp(stderr
, (char *)hash
, hashlen
);
746 tls1_PRF(ssl_get_algorithm2(s
),
747 TLS_MD_EXTENDED_MASTER_SECRET_CONST
,
748 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE
,
752 NULL
, 0, p
, len
, s
->session
->master_key
, buff
, sizeof buff
);
753 OPENSSL_cleanse(hash
, hashlen
);
755 tls1_PRF(ssl_get_algorithm2(s
),
756 TLS_MD_MASTER_SECRET_CONST
,
757 TLS_MD_MASTER_SECRET_CONST_SIZE
,
758 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
760 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
761 NULL
, 0, p
, len
, s
->session
->master_key
, buff
, sizeof buff
);
763 OPENSSL_cleanse(buff
, sizeof buff
);
765 fprintf(stderr
, "Premaster Secret:\n");
766 BIO_dump_fp(stderr
, (char *)p
, len
);
767 fprintf(stderr
, "Client Random:\n");
768 BIO_dump_fp(stderr
, (char *)s
->s3
->client_random
, SSL3_RANDOM_SIZE
);
769 fprintf(stderr
, "Server Random:\n");
770 BIO_dump_fp(stderr
, (char *)s
->s3
->server_random
, SSL3_RANDOM_SIZE
);
771 fprintf(stderr
, "Master Secret:\n");
772 BIO_dump_fp(stderr
, (char *)s
->session
->master_key
,
773 SSL3_MASTER_SECRET_SIZE
);
776 #ifdef OPENSSL_SSL_TRACE_CRYPTO
777 if (s
->msg_callback
) {
778 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_PREMASTER
,
779 p
, len
, s
, s
->msg_callback_arg
);
780 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_CLIENT_RANDOM
,
781 s
->s3
->client_random
, SSL3_RANDOM_SIZE
,
782 s
, s
->msg_callback_arg
);
783 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_SERVER_RANDOM
,
784 s
->s3
->server_random
, SSL3_RANDOM_SIZE
,
785 s
, s
->msg_callback_arg
);
786 s
->msg_callback(2, s
->version
, TLS1_RT_CRYPTO_MASTER
,
787 s
->session
->master_key
,
788 SSL3_MASTER_SECRET_SIZE
, s
, s
->msg_callback_arg
);
792 return (SSL3_MASTER_SECRET_SIZE
);
795 int tls1_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
796 const char *label
, size_t llen
,
797 const unsigned char *context
,
798 size_t contextlen
, int use_context
)
801 unsigned char *val
= NULL
;
802 size_t vallen
= 0, currentvalpos
;
805 buff
= OPENSSL_malloc(olen
);
810 * construct PRF arguments we construct the PRF argument ourself rather
811 * than passing separate values into the TLS PRF to ensure that the
812 * concatenation of values does not create a prohibited label.
814 vallen
= llen
+ SSL3_RANDOM_SIZE
* 2;
816 vallen
+= 2 + contextlen
;
819 val
= OPENSSL_malloc(vallen
);
823 memcpy(val
+ currentvalpos
, (unsigned char *)label
, llen
);
824 currentvalpos
+= llen
;
825 memcpy(val
+ currentvalpos
, s
->s3
->client_random
, SSL3_RANDOM_SIZE
);
826 currentvalpos
+= SSL3_RANDOM_SIZE
;
827 memcpy(val
+ currentvalpos
, s
->s3
->server_random
, SSL3_RANDOM_SIZE
);
828 currentvalpos
+= SSL3_RANDOM_SIZE
;
831 val
[currentvalpos
] = (contextlen
>> 8) & 0xff;
833 val
[currentvalpos
] = contextlen
& 0xff;
835 if ((contextlen
> 0) || (context
!= NULL
)) {
836 memcpy(val
+ currentvalpos
, context
, contextlen
);
841 * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited
842 * label len) = 15, so size of val > max(prohibited label len) = 15 and
843 * the comparisons won't have buffer overflow
845 if (memcmp(val
, TLS_MD_CLIENT_FINISH_CONST
,
846 TLS_MD_CLIENT_FINISH_CONST_SIZE
) == 0)
848 if (memcmp(val
, TLS_MD_SERVER_FINISH_CONST
,
849 TLS_MD_SERVER_FINISH_CONST_SIZE
) == 0)
851 if (memcmp(val
, TLS_MD_MASTER_SECRET_CONST
,
852 TLS_MD_MASTER_SECRET_CONST_SIZE
) == 0)
854 if (memcmp(val
, TLS_MD_EXTENDED_MASTER_SECRET_CONST
,
855 TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE
) == 0)
857 if (memcmp(val
, TLS_MD_KEY_EXPANSION_CONST
,
858 TLS_MD_KEY_EXPANSION_CONST_SIZE
) == 0)
861 rv
= tls1_PRF(ssl_get_algorithm2(s
),
867 s
->session
->master_key
, s
->session
->master_key_length
,
872 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL
,
873 SSL_R_TLS_ILLEGAL_EXPORTER_LABEL
);
877 SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL
, ERR_R_MALLOC_FAILURE
);
880 CRYPTO_clear_free(val
, vallen
);
881 CRYPTO_clear_free(buff
, olen
);
885 int tls1_alert_code(int code
)
888 case SSL_AD_CLOSE_NOTIFY
:
889 return (SSL3_AD_CLOSE_NOTIFY
);
890 case SSL_AD_UNEXPECTED_MESSAGE
:
891 return (SSL3_AD_UNEXPECTED_MESSAGE
);
892 case SSL_AD_BAD_RECORD_MAC
:
893 return (SSL3_AD_BAD_RECORD_MAC
);
894 case SSL_AD_DECRYPTION_FAILED
:
895 return (TLS1_AD_DECRYPTION_FAILED
);
896 case SSL_AD_RECORD_OVERFLOW
:
897 return (TLS1_AD_RECORD_OVERFLOW
);
898 case SSL_AD_DECOMPRESSION_FAILURE
:
899 return (SSL3_AD_DECOMPRESSION_FAILURE
);
900 case SSL_AD_HANDSHAKE_FAILURE
:
901 return (SSL3_AD_HANDSHAKE_FAILURE
);
902 case SSL_AD_NO_CERTIFICATE
:
904 case SSL_AD_BAD_CERTIFICATE
:
905 return (SSL3_AD_BAD_CERTIFICATE
);
906 case SSL_AD_UNSUPPORTED_CERTIFICATE
:
907 return (SSL3_AD_UNSUPPORTED_CERTIFICATE
);
908 case SSL_AD_CERTIFICATE_REVOKED
:
909 return (SSL3_AD_CERTIFICATE_REVOKED
);
910 case SSL_AD_CERTIFICATE_EXPIRED
:
911 return (SSL3_AD_CERTIFICATE_EXPIRED
);
912 case SSL_AD_CERTIFICATE_UNKNOWN
:
913 return (SSL3_AD_CERTIFICATE_UNKNOWN
);
914 case SSL_AD_ILLEGAL_PARAMETER
:
915 return (SSL3_AD_ILLEGAL_PARAMETER
);
916 case SSL_AD_UNKNOWN_CA
:
917 return (TLS1_AD_UNKNOWN_CA
);
918 case SSL_AD_ACCESS_DENIED
:
919 return (TLS1_AD_ACCESS_DENIED
);
920 case SSL_AD_DECODE_ERROR
:
921 return (TLS1_AD_DECODE_ERROR
);
922 case SSL_AD_DECRYPT_ERROR
:
923 return (TLS1_AD_DECRYPT_ERROR
);
924 case SSL_AD_EXPORT_RESTRICTION
:
925 return (TLS1_AD_EXPORT_RESTRICTION
);
926 case SSL_AD_PROTOCOL_VERSION
:
927 return (TLS1_AD_PROTOCOL_VERSION
);
928 case SSL_AD_INSUFFICIENT_SECURITY
:
929 return (TLS1_AD_INSUFFICIENT_SECURITY
);
930 case SSL_AD_INTERNAL_ERROR
:
931 return (TLS1_AD_INTERNAL_ERROR
);
932 case SSL_AD_USER_CANCELLED
:
933 return (TLS1_AD_USER_CANCELLED
);
934 case SSL_AD_NO_RENEGOTIATION
:
935 return (TLS1_AD_NO_RENEGOTIATION
);
936 case SSL_AD_UNSUPPORTED_EXTENSION
:
937 return (TLS1_AD_UNSUPPORTED_EXTENSION
);
938 case SSL_AD_CERTIFICATE_UNOBTAINABLE
:
939 return (TLS1_AD_CERTIFICATE_UNOBTAINABLE
);
940 case SSL_AD_UNRECOGNIZED_NAME
:
941 return (TLS1_AD_UNRECOGNIZED_NAME
);
942 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE
:
943 return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
);
944 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE
:
945 return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
);
946 case SSL_AD_UNKNOWN_PSK_IDENTITY
:
947 return (TLS1_AD_UNKNOWN_PSK_IDENTITY
);
948 case SSL_AD_INAPPROPRIATE_FALLBACK
:
949 return (TLS1_AD_INAPPROPRIATE_FALLBACK
);