1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) fromg
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
57 /* ====================================================================
58 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.g
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * openssl-core@openssl.org.
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com).
110 /* ====================================================================
111 * Copyright 2005 Nokia. All rights reserved.
113 * The portions of the attached software ("Contribution") is developed by
114 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
117 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
118 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
119 * support (see RFC 4279) to OpenSSL.
121 * No patent licenses or other rights except those expressly stated in
122 * the OpenSSL open source license shall be deemed granted or received
123 * expressly, by implication, estoppel, or otherwise.
125 * No assurances are provided by Nokia that the Contribution does not
126 * infringe the patent or other intellectual property rights of any third
127 * party or that the license provides you with all the necessary rights
128 * to make use of the Contribution.
130 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
131 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
132 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
133 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
139 #include <openssl/err.h>
140 #include <openssl/evp.h>
141 #include <openssl/mem.h>
142 #include <openssl/md5.h>
143 #include <openssl/obj.h>
145 #include "ssl_locl.h"
147 static unsigned char ssl3_pad_1[48]={
148 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
149 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
150 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
151 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
152 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
153 0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36 };
155 static unsigned char ssl3_pad_2[48]={
156 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
157 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
158 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
159 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
160 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
161 0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c };
162 static int ssl3_handshake_mac(SSL *s, int md_nid,
163 const char *sender, int len, unsigned char *p);
164 static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
168 unsigned char buf[16],smd[SHA_DIGEST_LENGTH];
173 EVP_MD_CTX_init(&m5);
174 EVP_MD_CTX_init(&s1);
175 for (i=0; (int)i<num; i+=MD5_DIGEST_LENGTH)
180 /* bug: 'buf' is too small for this ciphersuite */
181 OPENSSL_PUT_ERROR(SSL, ssl3_generate_key_block, ERR_R_INTERNAL_ERROR);
188 EVP_DigestInit_ex(&s1,EVP_sha1(), NULL);
189 EVP_DigestUpdate(&s1,buf,k);
190 EVP_DigestUpdate(&s1,s->session->master_key,
191 s->session->master_key_length);
192 EVP_DigestUpdate(&s1,s->s3->server_random,SSL3_RANDOM_SIZE);
193 EVP_DigestUpdate(&s1,s->s3->client_random,SSL3_RANDOM_SIZE);
194 EVP_DigestFinal_ex(&s1,smd,NULL);
196 EVP_DigestInit_ex(&m5,EVP_md5(), NULL);
197 EVP_DigestUpdate(&m5,s->session->master_key,
198 s->session->master_key_length);
199 EVP_DigestUpdate(&m5,smd,SHA_DIGEST_LENGTH);
200 if ((int)(i+MD5_DIGEST_LENGTH) > num)
202 EVP_DigestFinal_ex(&m5,smd,NULL);
203 memcpy(km,smd,(num-i));
206 EVP_DigestFinal_ex(&m5,km,NULL);
208 km+=MD5_DIGEST_LENGTH;
210 OPENSSL_cleanse(smd,SHA_DIGEST_LENGTH);
211 EVP_MD_CTX_cleanup(&m5);
212 EVP_MD_CTX_cleanup(&s1);
216 int ssl3_change_cipher_state(SSL *s, int which)
218 unsigned char *p,*mac_secret;
219 unsigned char exp_key[EVP_MAX_KEY_LENGTH];
220 unsigned char exp_iv[EVP_MAX_IV_LENGTH];
221 unsigned char *ms,*key,*iv;
228 c=s->s3->tmp.new_sym_enc;
229 m=s->s3->tmp.new_hash;
230 /* m == NULL will lead to a crash later */
233 if (which & SSL3_CC_READ)
235 if (s->enc_read_ctx != NULL)
237 else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
240 /* make sure it's intialized in case we exit later with an error */
241 EVP_CIPHER_CTX_init(s->enc_read_ctx);
244 ssl_replace_hash(&s->read_hash,m);
245 memset(&(s->s3->read_sequence[0]),0,8);
246 mac_secret= &(s->s3->read_mac_secret[0]);
250 if (s->enc_write_ctx != NULL)
252 else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
255 /* make sure it's intialized in case we exit later with an error */
256 EVP_CIPHER_CTX_init(s->enc_write_ctx);
257 dd= s->enc_write_ctx;
258 ssl_replace_hash(&s->write_hash,m);
259 memset(&(s->s3->write_sequence[0]),0,8);
260 mac_secret= &(s->s3->write_mac_secret[0]);
264 EVP_CIPHER_CTX_cleanup(dd);
266 p=s->s3->tmp.key_block;
268 cl=EVP_CIPHER_key_length(c);
270 /* Was j=(is_exp)?5:EVP_CIPHER_key_length(c); */
271 k=EVP_CIPHER_iv_length(c);
272 if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
273 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
276 key= &(p[ n]); n+=j+j;
277 iv= &(p[ n]); n+=k+k;
282 ms= &(p[ n]); n+=i+j;
283 key= &(p[ n]); n+=j+k;
287 if (n > s->s3->tmp.key_block_length)
289 OPENSSL_PUT_ERROR(SSL, ssl3_change_cipher_state, ERR_R_INTERNAL_ERROR);
293 memcpy(mac_secret,ms,i);
295 s->session->key_arg_length=0;
297 EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
299 #ifdef OPENSSL_SSL_TRACE_CRYPTO
303 int wh = which & SSL3_CC_WRITE ?
304 TLS1_RT_CRYPTO_WRITE : TLS1_RT_CRYPTO_READ;
305 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_MAC,
306 mac_secret, EVP_MD_size(m),
307 s, s->msg_callback_arg);
309 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_KEY,
311 s, s->msg_callback_arg);
314 s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_IV,
315 iv, k, s, s->msg_callback_arg);
320 OPENSSL_cleanse(&(exp_key[0]),sizeof(exp_key));
321 OPENSSL_cleanse(&(exp_iv[0]),sizeof(exp_iv));
324 OPENSSL_PUT_ERROR(SSL, ssl3_change_cipher_state, ERR_R_MALLOC_FAILURE);
329 int ssl3_setup_key_block(SSL *s)
337 if (s->s3->tmp.key_block_length != 0)
340 if (!ssl_cipher_get_evp(s->session,&c,&hash,NULL,NULL))
342 OPENSSL_PUT_ERROR(SSL, ssl3_setup_key_block, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
346 s->s3->tmp.new_sym_enc=c;
347 s->s3->tmp.new_hash=hash;
349 num=EVP_MD_size(hash);
351 num=EVP_CIPHER_key_length(c)+num+EVP_CIPHER_iv_length(c);
354 ssl3_cleanup_key_block(s);
356 if ((p=OPENSSL_malloc(num)) == NULL)
359 s->s3->tmp.key_block_length=num;
360 s->s3->tmp.key_block=p;
362 ret = ssl3_generate_key_block(s,p,num);
364 /* enable vulnerability countermeasure for CBC ciphers with
365 * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt) */
366 if ((s->mode & SSL_MODE_CBC_RECORD_SPLITTING) != 0)
368 s->s3->need_record_splitting = 1;
370 if (s->session->cipher != NULL)
372 if (s->session->cipher->algorithm_enc == SSL_eNULL)
373 s->s3->need_record_splitting = 0;
375 #ifndef OPENSSL_NO_RC4
376 if (s->session->cipher->algorithm_enc == SSL_RC4)
377 s->s3->need_record_splitting = 0;
385 OPENSSL_PUT_ERROR(SSL, ssl3_setup_key_block, ERR_R_MALLOC_FAILURE);
389 void ssl3_cleanup_key_block(SSL *s)
391 if (s->s3->tmp.key_block != NULL)
393 OPENSSL_cleanse(s->s3->tmp.key_block,
394 s->s3->tmp.key_block_length);
395 OPENSSL_free(s->s3->tmp.key_block);
396 s->s3->tmp.key_block=NULL;
398 s->s3->tmp.key_block_length=0;
401 /* ssl3_enc encrypts/decrypts the record in |s->wrec| / |s->rrec|, respectively.
404 * 0: (in non-constant time) if the record is publically invalid (i.e. too
406 * 1: if the record's padding is valid / the encryption was successful.
407 * -1: if the record's padding is invalid or, if sending, an internal error
410 int ssl3_enc(SSL *s, int send)
416 const EVP_CIPHER *enc;
422 if (s->enc_write_ctx == NULL)
425 enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
431 if (s->enc_read_ctx == NULL)
434 enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
437 if ((s->session == NULL) || (ds == NULL) ||
440 memmove(rec->data,rec->input,rec->length);
441 rec->input=rec->data;
446 bs=EVP_CIPHER_block_size(ds->cipher);
450 if ((bs != 1) && send)
454 /* we need to add 'i-1' padding bytes */
456 /* the last of these zero bytes will be overwritten
457 * with the padding length. */
458 memset(&rec->input[rec->length], 0, i);
460 rec->input[l-1]=(i-1);
465 if (l == 0 || l%bs != 0)
467 /* otherwise, rec->length >= bs */
470 EVP_Cipher(ds,rec->data,rec->input,l);
472 if (EVP_MD_CTX_md(s->read_hash) != NULL)
473 mac_size = EVP_MD_CTX_size(s->read_hash);
474 if ((bs != 1) && !send)
475 return ssl3_cbc_remove_padding(s, rec, bs, mac_size);
480 void ssl3_init_finished_mac(SSL *s)
482 if (s->s3->handshake_buffer) BIO_free(s->s3->handshake_buffer);
483 if (s->s3->handshake_dgst) ssl3_free_digest_list(s);
484 s->s3->handshake_buffer=BIO_new(BIO_s_mem());
485 (void)BIO_set_close(s->s3->handshake_buffer,BIO_CLOSE);
488 void ssl3_free_digest_list(SSL *s)
491 if (!s->s3->handshake_dgst) return;
492 for (i=0;i<SSL_MAX_DIGEST;i++)
494 if (s->s3->handshake_dgst[i])
495 EVP_MD_CTX_destroy(s->s3->handshake_dgst[i]);
497 OPENSSL_free(s->s3->handshake_dgst);
498 s->s3->handshake_dgst=NULL;
503 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len)
505 if (s->s3->handshake_buffer && !(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE))
507 BIO_write (s->s3->handshake_buffer,(void *)buf,len);
512 for (i=0;i< SSL_MAX_DIGEST;i++)
514 if (s->s3->handshake_dgst[i]!= NULL)
515 EVP_DigestUpdate(s->s3->handshake_dgst[i],buf,len);
520 int ssl3_digest_cached_records(SSL *s)
525 const uint8_t *hdata;
528 /* Allocate handshake_dgst array */
529 ssl3_free_digest_list(s);
530 s->s3->handshake_dgst = OPENSSL_malloc(SSL_MAX_DIGEST * sizeof(EVP_MD_CTX *));
531 memset(s->s3->handshake_dgst,0,SSL_MAX_DIGEST *sizeof(EVP_MD_CTX *));
532 if (!BIO_mem_contents(s->s3->handshake_buffer, &hdata, &hdatalen))
534 OPENSSL_PUT_ERROR(SSL, ssl3_digest_cached_records, SSL_R_BAD_HANDSHAKE_LENGTH);
538 /* Loop through bitso of algorithm2 field and create MD_CTX-es */
539 for (i=0;ssl_get_handshake_digest(i,&mask,&md); i++)
541 if ((mask & ssl_get_algorithm2(s)) && md)
543 s->s3->handshake_dgst[i]=EVP_MD_CTX_create();
544 EVP_DigestInit_ex(s->s3->handshake_dgst[i],md,NULL);
545 EVP_DigestUpdate(s->s3->handshake_dgst[i],hdata,hdatalen);
549 s->s3->handshake_dgst[i]=NULL;
552 if (!(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE))
554 /* Free handshake_buffer BIO */
555 BIO_free(s->s3->handshake_buffer);
556 s->s3->handshake_buffer = NULL;
562 int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p)
564 return(ssl3_handshake_mac(s,md_nid,NULL,0,p));
566 int ssl3_final_finish_mac(SSL *s,
567 const char *sender, int len, unsigned char *p)
570 ret=ssl3_handshake_mac(s,NID_md5,sender,len,p);
576 sha1len=ssl3_handshake_mac(s,NID_sha1,sender,len,p);
584 static int ssl3_handshake_mac(SSL *s, int md_nid,
585 const char *sender, int len, unsigned char *p)
590 unsigned char md_buf[EVP_MAX_MD_SIZE];
591 EVP_MD_CTX ctx,*d=NULL;
593 if (s->s3->handshake_buffer)
594 if (!ssl3_digest_cached_records(s))
597 /* Search for digest of specified type in the handshake_dgst
599 for (i=0;i<SSL_MAX_DIGEST;i++)
601 if (s->s3->handshake_dgst[i]&&EVP_MD_CTX_type(s->s3->handshake_dgst[i])==md_nid)
603 d=s->s3->handshake_dgst[i];
608 OPENSSL_PUT_ERROR(SSL, ssl3_handshake_mac, SSL_R_NO_REQUIRED_DIGEST);
611 EVP_MD_CTX_init(&ctx);
612 EVP_MD_CTX_copy_ex(&ctx,d);
613 n=EVP_MD_CTX_size(&ctx);
619 EVP_DigestUpdate(&ctx,sender,len);
620 EVP_DigestUpdate(&ctx,s->session->master_key,
621 s->session->master_key_length);
622 EVP_DigestUpdate(&ctx,ssl3_pad_1,npad);
623 EVP_DigestFinal_ex(&ctx,md_buf,&i);
625 EVP_DigestInit_ex(&ctx,EVP_MD_CTX_md(&ctx), NULL);
626 EVP_DigestUpdate(&ctx,s->session->master_key,
627 s->session->master_key_length);
628 EVP_DigestUpdate(&ctx,ssl3_pad_2,npad);
629 EVP_DigestUpdate(&ctx,md_buf,i);
630 EVP_DigestFinal_ex(&ctx,p,&ret);
632 EVP_MD_CTX_cleanup(&ctx);
637 int n_ssl3_mac(SSL *ssl, unsigned char *md, int send)
640 unsigned char *mac_sec,*seq;
642 const EVP_MD_CTX *hash;
643 unsigned char *p,rec_char;
644 size_t md_size, orig_len;
650 rec= &(ssl->s3->wrec);
651 mac_sec= &(ssl->s3->write_mac_secret[0]);
652 seq= &(ssl->s3->write_sequence[0]);
653 hash=ssl->write_hash;
657 rec= &(ssl->s3->rrec);
658 mac_sec= &(ssl->s3->read_mac_secret[0]);
659 seq= &(ssl->s3->read_sequence[0]);
663 t=EVP_MD_CTX_size(hash);
667 npad=(48/md_size)*md_size;
669 /* kludge: ssl3_cbc_remove_padding passes padding length in rec->type */
670 orig_len = rec->length+md_size+((unsigned int)rec->type>>8);
674 EVP_CIPHER_CTX_mode(ssl->enc_read_ctx) == EVP_CIPH_CBC_MODE &&
675 ssl3_cbc_record_digest_supported(hash))
677 /* This is a CBC-encrypted record. We must avoid leaking any
678 * timing-side channel information about how many blocks of
679 * data we are hashing because that gives an attacker a
682 /* npad is, at most, 48 bytes and that's with MD5:
683 * 16 + 48 + 8 (sequence bytes) + 1 + 2 = 75.
685 * With SHA-1 (the largest hash speced for SSLv3) the hash size
686 * goes up 4, but npad goes down by 8, resulting in a smaller
688 unsigned char header[75];
690 memcpy(header+j, mac_sec, md_size);
692 memcpy(header+j, ssl3_pad_1, npad);
694 memcpy(header+j, seq, 8);
696 header[j++] = rec->type;
697 header[j++] = rec->length >> 8;
698 header[j++] = rec->length & 0xff;
700 ssl3_cbc_digest_record(
704 rec->length + md_size, orig_len,
710 unsigned int md_size_u;
711 /* Chop the digest off the end :-) */
712 EVP_MD_CTX_init(&md_ctx);
714 EVP_MD_CTX_copy_ex( &md_ctx,hash);
715 EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
716 EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad);
717 EVP_DigestUpdate(&md_ctx,seq,8);
719 EVP_DigestUpdate(&md_ctx,&rec_char,1);
722 EVP_DigestUpdate(&md_ctx,md,2);
723 EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
724 EVP_DigestFinal_ex( &md_ctx,md,NULL);
726 EVP_MD_CTX_copy_ex( &md_ctx,hash);
727 EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
728 EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad);
729 EVP_DigestUpdate(&md_ctx,md,md_size);
730 EVP_DigestFinal_ex( &md_ctx,md,&md_size_u);
733 EVP_MD_CTX_cleanup(&md_ctx);
736 ssl3_record_sequence_update(seq);
740 void ssl3_record_sequence_update(unsigned char *seq)
747 if (seq[i] != 0) break;
751 int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
754 static const unsigned char *salt[3]={
755 (const unsigned char *)"A",
756 (const unsigned char *)"BB",
757 (const unsigned char *)"CCC",
759 unsigned char buf[EVP_MAX_MD_SIZE];
763 #ifdef OPENSSL_SSL_TRACE_CRYPTO
764 unsigned char *tmpout = out;
767 EVP_MD_CTX_init(&ctx);
770 EVP_DigestInit_ex(&ctx,s->ctx->sha1, NULL);
771 EVP_DigestUpdate(&ctx,salt[i],strlen((const char *)salt[i]));
772 EVP_DigestUpdate(&ctx,p,len);
773 EVP_DigestUpdate(&ctx,&(s->s3->client_random[0]),
775 EVP_DigestUpdate(&ctx,&(s->s3->server_random[0]),
777 EVP_DigestFinal_ex(&ctx,buf,&n);
779 EVP_DigestInit_ex(&ctx,s->ctx->md5, NULL);
780 EVP_DigestUpdate(&ctx,p,len);
781 EVP_DigestUpdate(&ctx,buf,n);
782 EVP_DigestFinal_ex(&ctx,out,&n);
786 EVP_MD_CTX_cleanup(&ctx);
788 #ifdef OPENSSL_SSL_TRACE_CRYPTO
791 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER,
792 p, len, s, s->msg_callback_arg);
793 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM,
794 s->s3->client_random, SSL3_RANDOM_SIZE,
795 s, s->msg_callback_arg);
796 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_SERVER_RANDOM,
797 s->s3->server_random, SSL3_RANDOM_SIZE,
798 s, s->msg_callback_arg);
799 s->msg_callback(2, s->version, TLS1_RT_CRYPTO_MASTER,
800 tmpout, SSL3_MASTER_SECRET_SIZE,
801 s, s->msg_callback_arg);
807 int ssl3_alert_code(int code)
811 case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
812 case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
813 case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
814 case SSL_AD_DECRYPTION_FAILED: return(SSL3_AD_BAD_RECORD_MAC);
815 case SSL_AD_RECORD_OVERFLOW: return(SSL3_AD_BAD_RECORD_MAC);
816 case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
817 case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
818 case SSL_AD_NO_CERTIFICATE: return(SSL3_AD_NO_CERTIFICATE);
819 case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
820 case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
821 case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
822 case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
823 case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
824 case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
825 case SSL_AD_UNKNOWN_CA: return(SSL3_AD_BAD_CERTIFICATE);
826 case SSL_AD_ACCESS_DENIED: return(SSL3_AD_HANDSHAKE_FAILURE);
827 case SSL_AD_DECODE_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
828 case SSL_AD_DECRYPT_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
829 case SSL_AD_EXPORT_RESTRICTION: return(SSL3_AD_HANDSHAKE_FAILURE);
830 case SSL_AD_PROTOCOL_VERSION: return(SSL3_AD_HANDSHAKE_FAILURE);
831 case SSL_AD_INSUFFICIENT_SECURITY:return(SSL3_AD_HANDSHAKE_FAILURE);
832 case SSL_AD_INTERNAL_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
833 case SSL_AD_USER_CANCELLED: return(SSL3_AD_HANDSHAKE_FAILURE);
834 case SSL_AD_NO_RENEGOTIATION: return(-1); /* Don't send it :-) */
835 case SSL_AD_UNSUPPORTED_EXTENSION: return(SSL3_AD_HANDSHAKE_FAILURE);
836 case SSL_AD_CERTIFICATE_UNOBTAINABLE: return(SSL3_AD_HANDSHAKE_FAILURE);
837 case SSL_AD_UNRECOGNIZED_NAME: return(SSL3_AD_HANDSHAKE_FAILURE);
838 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(SSL3_AD_HANDSHAKE_FAILURE);
839 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(SSL3_AD_HANDSHAKE_FAILURE);
840 case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY);
841 case SSL_AD_INAPPROPRIATE_FALLBACK:return(SSL3_AD_INAPPROPRIATE_FALLBACK);