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).
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* 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).
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* Copyright remains Eric Young's, and as such any Copyright notices in
17
* the code are not to be removed.
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* 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
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* 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
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* 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
#include <openssl/evp.h>
141
#include <openssl/md5.h>
143
static unsigned char ssl3_pad_1[48]={
144
0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
145
0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
146
0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
147
0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
148
0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36,
149
0x36,0x36,0x36,0x36,0x36,0x36,0x36,0x36 };
151
static unsigned char ssl3_pad_2[48]={
152
0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
153
0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
154
0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
155
0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
156
0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,
157
0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c,0x5c };
158
static int ssl3_handshake_mac(SSL *s, int md_nid,
159
const char *sender, int len, unsigned char *p);
160
static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
164
unsigned char buf[16],smd[SHA_DIGEST_LENGTH];
168
#ifdef CHARSET_EBCDIC
169
c = os_toascii[c]; /*'A' in ASCII */
172
EVP_MD_CTX_init(&m5);
173
EVP_MD_CTX_set_flags(&m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
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
SSLerr(SSL_F_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,*er1,*er2;
224
#ifndef OPENSSL_NO_COMP
229
int is_exp,n,i,j,k,cl;
232
is_exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
233
c=s->s3->tmp.new_sym_enc;
234
m=s->s3->tmp.new_hash;
235
/* m == NULL will lead to a crash later */
237
#ifndef OPENSSL_NO_COMP
238
if (s->s3->tmp.new_compression == NULL)
241
comp=s->s3->tmp.new_compression->method;
244
if (which & SSL3_CC_READ)
246
if (s->enc_read_ctx != NULL)
248
else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
251
/* make sure it's intialized in case we exit later with an error */
252
EVP_CIPHER_CTX_init(s->enc_read_ctx);
255
ssl_replace_hash(&s->read_hash,m);
256
#ifndef OPENSSL_NO_COMP
258
if (s->expand != NULL)
260
COMP_CTX_free(s->expand);
265
s->expand=COMP_CTX_new(comp);
266
if (s->expand == NULL)
268
SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
271
if (s->s3->rrec.comp == NULL)
272
s->s3->rrec.comp=(unsigned char *)
273
OPENSSL_malloc(SSL3_RT_MAX_PLAIN_LENGTH);
274
if (s->s3->rrec.comp == NULL)
278
memset(&(s->s3->read_sequence[0]),0,8);
279
mac_secret= &(s->s3->read_mac_secret[0]);
283
if (s->enc_write_ctx != NULL)
285
else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
288
/* make sure it's intialized in case we exit later with an error */
289
EVP_CIPHER_CTX_init(s->enc_write_ctx);
290
dd= s->enc_write_ctx;
291
ssl_replace_hash(&s->write_hash,m);
292
#ifndef OPENSSL_NO_COMP
294
if (s->compress != NULL)
296
COMP_CTX_free(s->compress);
301
s->compress=COMP_CTX_new(comp);
302
if (s->compress == NULL)
304
SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
309
memset(&(s->s3->write_sequence[0]),0,8);
310
mac_secret= &(s->s3->write_mac_secret[0]);
314
EVP_CIPHER_CTX_cleanup(dd);
316
p=s->s3->tmp.key_block;
320
cl=EVP_CIPHER_key_length(c);
321
j=is_exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
322
cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
323
/* Was j=(is_exp)?5:EVP_CIPHER_key_length(c); */
324
k=EVP_CIPHER_iv_length(c);
325
if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
326
(which == SSL3_CHANGE_CIPHER_SERVER_READ))
329
key= &(p[ n]); n+=j+j;
330
iv= &(p[ n]); n+=k+k;
331
er1= &(s->s3->client_random[0]);
332
er2= &(s->s3->server_random[0]);
337
ms= &(p[ n]); n+=i+j;
338
key= &(p[ n]); n+=j+k;
340
er1= &(s->s3->server_random[0]);
341
er2= &(s->s3->client_random[0]);
344
if (n > s->s3->tmp.key_block_length)
346
SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
350
EVP_MD_CTX_init(&md);
351
memcpy(mac_secret,ms,i);
354
/* In here I set both the read and write key/iv to the
355
* same value since only the correct one will be used :-).
357
EVP_DigestInit_ex(&md,EVP_md5(), NULL);
358
EVP_DigestUpdate(&md,key,j);
359
EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
360
EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
361
EVP_DigestFinal_ex(&md,&(exp_key[0]),NULL);
366
EVP_DigestInit_ex(&md,EVP_md5(), NULL);
367
EVP_DigestUpdate(&md,er1,SSL3_RANDOM_SIZE);
368
EVP_DigestUpdate(&md,er2,SSL3_RANDOM_SIZE);
369
EVP_DigestFinal_ex(&md,&(exp_iv[0]),NULL);
374
s->session->key_arg_length=0;
376
EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
378
OPENSSL_cleanse(&(exp_key[0]),sizeof(exp_key));
379
OPENSSL_cleanse(&(exp_iv[0]),sizeof(exp_iv));
380
EVP_MD_CTX_cleanup(&md);
383
SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
388
int ssl3_setup_key_block(SSL *s)
397
if (s->s3->tmp.key_block_length != 0)
400
if (!ssl_cipher_get_evp(s->session,&c,&hash,NULL,NULL,&comp))
402
SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
406
s->s3->tmp.new_sym_enc=c;
407
s->s3->tmp.new_hash=hash;
408
#ifdef OPENSSL_NO_COMP
409
s->s3->tmp.new_compression=NULL;
411
s->s3->tmp.new_compression=comp;
414
num=EVP_MD_size(hash);
418
num=EVP_CIPHER_key_length(c)+num+EVP_CIPHER_iv_length(c);
421
ssl3_cleanup_key_block(s);
423
if ((p=OPENSSL_malloc(num)) == NULL)
426
s->s3->tmp.key_block_length=num;
427
s->s3->tmp.key_block=p;
429
ret = ssl3_generate_key_block(s,p,num);
431
if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
433
/* enable vulnerability countermeasure for CBC ciphers with
434
* known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
436
s->s3->need_empty_fragments = 1;
438
if (s->session->cipher != NULL)
440
if (s->session->cipher->algorithm_enc == SSL_eNULL)
441
s->s3->need_empty_fragments = 0;
443
#ifndef OPENSSL_NO_RC4
444
if (s->session->cipher->algorithm_enc == SSL_RC4)
445
s->s3->need_empty_fragments = 0;
453
SSLerr(SSL_F_SSL3_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
457
void ssl3_cleanup_key_block(SSL *s)
459
if (s->s3->tmp.key_block != NULL)
461
OPENSSL_cleanse(s->s3->tmp.key_block,
462
s->s3->tmp.key_block_length);
463
OPENSSL_free(s->s3->tmp.key_block);
464
s->s3->tmp.key_block=NULL;
466
s->s3->tmp.key_block_length=0;
469
int ssl3_enc(SSL *s, int send)
475
const EVP_CIPHER *enc;
481
if (s->enc_write_ctx == NULL)
484
enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
490
if (s->enc_read_ctx == NULL)
493
enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
496
if ((s->session == NULL) || (ds == NULL) ||
499
memmove(rec->data,rec->input,rec->length);
500
rec->input=rec->data;
505
bs=EVP_CIPHER_block_size(ds->cipher);
509
if ((bs != 1) && send)
513
/* we need to add 'i-1' padding bytes */
515
/* the last of these zero bytes will be overwritten
516
* with the padding length. */
517
memset(&rec->input[rec->length], 0, i);
519
rec->input[l-1]=(i-1);
524
if (l == 0 || l%bs != 0)
526
SSLerr(SSL_F_SSL3_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
527
ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
530
/* otherwise, rec->length >= bs */
533
EVP_Cipher(ds,rec->data,rec->input,l);
535
if ((bs != 1) && !send)
538
/* SSL 3.0 bounds the number of padding bytes by the block size;
539
* padding bytes (except the last one) are arbitrary */
542
/* Incorrect padding. SSLerr() and ssl3_alert are done
543
* by caller: we don't want to reveal whether this is
544
* a decryption error or a MAC verification failure
545
* (see http://www.openssl.org/~bodo/tls-cbc.txt) */
548
/* now i <= bs <= rec->length */
555
void ssl3_init_finished_mac(SSL *s)
557
if (s->s3->handshake_buffer) BIO_free(s->s3->handshake_buffer);
558
if (s->s3->handshake_dgst) ssl3_free_digest_list(s);
559
s->s3->handshake_buffer=BIO_new(BIO_s_mem());
560
(void)BIO_set_close(s->s3->handshake_buffer,BIO_CLOSE);
563
void ssl3_free_digest_list(SSL *s)
566
if (!s->s3->handshake_dgst) return;
567
for (i=0;i<SSL_MAX_DIGEST;i++)
569
if (s->s3->handshake_dgst[i])
570
EVP_MD_CTX_destroy(s->s3->handshake_dgst[i]);
572
OPENSSL_free(s->s3->handshake_dgst);
573
s->s3->handshake_dgst=NULL;
578
void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len)
580
if (s->s3->handshake_buffer && !(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE))
582
BIO_write (s->s3->handshake_buffer,(void *)buf,len);
587
for (i=0;i< SSL_MAX_DIGEST;i++)
589
if (s->s3->handshake_dgst[i]!= NULL)
590
EVP_DigestUpdate(s->s3->handshake_dgst[i],buf,len);
595
int ssl3_digest_cached_records(SSL *s)
603
/* Allocate handshake_dgst array */
604
ssl3_free_digest_list(s);
605
s->s3->handshake_dgst = OPENSSL_malloc(SSL_MAX_DIGEST * sizeof(EVP_MD_CTX *));
606
memset(s->s3->handshake_dgst,0,SSL_MAX_DIGEST *sizeof(EVP_MD_CTX *));
607
hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,&hdata);
610
SSLerr(SSL_F_SSL3_DIGEST_CACHED_RECORDS, SSL_R_BAD_HANDSHAKE_LENGTH);
614
/* Loop through bitso of algorithm2 field and create MD_CTX-es */
615
for (i=0;ssl_get_handshake_digest(i,&mask,&md); i++)
617
if ((mask & ssl_get_algorithm2(s)) && md)
619
s->s3->handshake_dgst[i]=EVP_MD_CTX_create();
621
if (EVP_MD_nid(md) == NID_md5)
623
EVP_MD_CTX_set_flags(s->s3->handshake_dgst[i],
624
EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
627
EVP_DigestInit_ex(s->s3->handshake_dgst[i],md,NULL);
628
EVP_DigestUpdate(s->s3->handshake_dgst[i],hdata,hdatalen);
632
s->s3->handshake_dgst[i]=NULL;
635
if (!(s->s3->flags & TLS1_FLAGS_KEEP_HANDSHAKE))
637
/* Free handshake_buffer BIO */
638
BIO_free(s->s3->handshake_buffer);
639
s->s3->handshake_buffer = NULL;
645
int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p)
647
return(ssl3_handshake_mac(s,md_nid,NULL,0,p));
649
int ssl3_final_finish_mac(SSL *s,
650
const char *sender, int len, unsigned char *p)
653
ret=ssl3_handshake_mac(s,NID_md5,sender,len,p);
655
ret+=ssl3_handshake_mac(s,NID_sha1,sender,len,p);
658
static int ssl3_handshake_mac(SSL *s, int md_nid,
659
const char *sender, int len, unsigned char *p)
664
unsigned char md_buf[EVP_MAX_MD_SIZE];
665
EVP_MD_CTX ctx,*d=NULL;
667
if (s->s3->handshake_buffer)
668
if (!ssl3_digest_cached_records(s))
671
/* Search for digest of specified type in the handshake_dgst
673
for (i=0;i<SSL_MAX_DIGEST;i++)
675
if (s->s3->handshake_dgst[i]&&EVP_MD_CTX_type(s->s3->handshake_dgst[i])==md_nid)
677
d=s->s3->handshake_dgst[i];
682
SSLerr(SSL_F_SSL3_HANDSHAKE_MAC,SSL_R_NO_REQUIRED_DIGEST);
685
EVP_MD_CTX_init(&ctx);
686
EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
687
EVP_MD_CTX_copy_ex(&ctx,d);
688
n=EVP_MD_CTX_size(&ctx);
694
EVP_DigestUpdate(&ctx,sender,len);
695
EVP_DigestUpdate(&ctx,s->session->master_key,
696
s->session->master_key_length);
697
EVP_DigestUpdate(&ctx,ssl3_pad_1,npad);
698
EVP_DigestFinal_ex(&ctx,md_buf,&i);
700
EVP_DigestInit_ex(&ctx,EVP_MD_CTX_md(&ctx), NULL);
701
EVP_DigestUpdate(&ctx,s->session->master_key,
702
s->session->master_key_length);
703
EVP_DigestUpdate(&ctx,ssl3_pad_2,npad);
704
EVP_DigestUpdate(&ctx,md_buf,i);
705
EVP_DigestFinal_ex(&ctx,p,&ret);
707
EVP_MD_CTX_cleanup(&ctx);
712
int n_ssl3_mac(SSL *ssl, unsigned char *md, int send)
715
unsigned char *mac_sec,*seq;
717
const EVP_MD_CTX *hash;
718
unsigned char *p,rec_char;
719
unsigned int md_size;
725
rec= &(ssl->s3->wrec);
726
mac_sec= &(ssl->s3->write_mac_secret[0]);
727
seq= &(ssl->s3->write_sequence[0]);
728
hash=ssl->write_hash;
732
rec= &(ssl->s3->rrec);
733
mac_sec= &(ssl->s3->read_mac_secret[0]);
734
seq= &(ssl->s3->read_sequence[0]);
738
t=EVP_MD_CTX_size(hash);
742
npad=(48/md_size)*md_size;
744
/* Chop the digest off the end :-) */
745
EVP_MD_CTX_init(&md_ctx);
747
EVP_MD_CTX_copy_ex( &md_ctx,hash);
748
EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
749
EVP_DigestUpdate(&md_ctx,ssl3_pad_1,npad);
750
EVP_DigestUpdate(&md_ctx,seq,8);
752
EVP_DigestUpdate(&md_ctx,&rec_char,1);
755
EVP_DigestUpdate(&md_ctx,md,2);
756
EVP_DigestUpdate(&md_ctx,rec->input,rec->length);
757
EVP_DigestFinal_ex( &md_ctx,md,NULL);
759
EVP_MD_CTX_copy_ex( &md_ctx,hash);
760
EVP_DigestUpdate(&md_ctx,mac_sec,md_size);
761
EVP_DigestUpdate(&md_ctx,ssl3_pad_2,npad);
762
EVP_DigestUpdate(&md_ctx,md,md_size);
763
EVP_DigestFinal_ex( &md_ctx,md,&md_size);
765
EVP_MD_CTX_cleanup(&md_ctx);
767
ssl3_record_sequence_update(seq);
771
void ssl3_record_sequence_update(unsigned char *seq)
778
if (seq[i] != 0) break;
782
int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
785
static const unsigned char *salt[3]={
786
#ifndef CHARSET_EBCDIC
787
(const unsigned char *)"A",
788
(const unsigned char *)"BB",
789
(const unsigned char *)"CCC",
791
(const unsigned char *)"\x41",
792
(const unsigned char *)"\x42\x42",
793
(const unsigned char *)"\x43\x43\x43",
796
unsigned char buf[EVP_MAX_MD_SIZE];
801
EVP_MD_CTX_init(&ctx);
804
EVP_DigestInit_ex(&ctx,s->ctx->sha1, NULL);
805
EVP_DigestUpdate(&ctx,salt[i],strlen((const char *)salt[i]));
806
EVP_DigestUpdate(&ctx,p,len);
807
EVP_DigestUpdate(&ctx,&(s->s3->client_random[0]),
809
EVP_DigestUpdate(&ctx,&(s->s3->server_random[0]),
811
EVP_DigestFinal_ex(&ctx,buf,&n);
813
EVP_DigestInit_ex(&ctx,s->ctx->md5, NULL);
814
EVP_DigestUpdate(&ctx,p,len);
815
EVP_DigestUpdate(&ctx,buf,n);
816
EVP_DigestFinal_ex(&ctx,out,&n);
820
EVP_MD_CTX_cleanup(&ctx);
824
int ssl3_alert_code(int code)
828
case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
829
case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
830
case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
831
case SSL_AD_DECRYPTION_FAILED: return(SSL3_AD_BAD_RECORD_MAC);
832
case SSL_AD_RECORD_OVERFLOW: return(SSL3_AD_BAD_RECORD_MAC);
833
case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
834
case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
835
case SSL_AD_NO_CERTIFICATE: return(SSL3_AD_NO_CERTIFICATE);
836
case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
837
case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
838
case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
839
case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
840
case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
841
case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
842
case SSL_AD_UNKNOWN_CA: return(SSL3_AD_BAD_CERTIFICATE);
843
case SSL_AD_ACCESS_DENIED: return(SSL3_AD_HANDSHAKE_FAILURE);
844
case SSL_AD_DECODE_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
845
case SSL_AD_DECRYPT_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
846
case SSL_AD_EXPORT_RESTRICTION: return(SSL3_AD_HANDSHAKE_FAILURE);
847
case SSL_AD_PROTOCOL_VERSION: return(SSL3_AD_HANDSHAKE_FAILURE);
848
case SSL_AD_INSUFFICIENT_SECURITY:return(SSL3_AD_HANDSHAKE_FAILURE);
849
case SSL_AD_INTERNAL_ERROR: return(SSL3_AD_HANDSHAKE_FAILURE);
850
case SSL_AD_USER_CANCELLED: return(SSL3_AD_HANDSHAKE_FAILURE);
851
case SSL_AD_NO_RENEGOTIATION: return(-1); /* Don't send it :-) */
852
case SSL_AD_UNSUPPORTED_EXTENSION: return(SSL3_AD_HANDSHAKE_FAILURE);
853
case SSL_AD_CERTIFICATE_UNOBTAINABLE: return(SSL3_AD_HANDSHAKE_FAILURE);
854
case SSL_AD_UNRECOGNIZED_NAME: return(SSL3_AD_HANDSHAKE_FAILURE);
855
case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(SSL3_AD_HANDSHAKE_FAILURE);
856
case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(SSL3_AD_HANDSHAKE_FAILURE);
857
case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY);