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diff --git a/src/lib/libssl/t1_enc.c b/src/lib/libssl/t1_enc.c
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1/* ssl/t1_enc.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
57 */
58
59#include <stdio.h>
60#include <openssl/comp.h>
61#include <openssl/md5.h>
62#include <openssl/sha.h>
63#include <openssl/evp.h>
64#include <openssl/hmac.h>
65#include "ssl_locl.h"
66
67static void tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
68 int sec_len, unsigned char *seed, int seed_len,
69 unsigned char *out, int olen)
70 {
71 int chunk,n;
72 unsigned int j;
73 HMAC_CTX ctx;
74 HMAC_CTX ctx_tmp;
75 unsigned char A1[HMAC_MAX_MD_CBLOCK];
76 unsigned int A1_len;
77
78 chunk=EVP_MD_size(md);
79
80 HMAC_Init(&ctx,sec,sec_len,md);
81 HMAC_Update(&ctx,seed,seed_len);
82 HMAC_Final(&ctx,A1,&A1_len);
83
84 n=0;
85 for (;;)
86 {
87 HMAC_Init(&ctx,NULL,0,NULL); /* re-init */
88 HMAC_Update(&ctx,A1,A1_len);
89 memcpy(&ctx_tmp,&ctx,sizeof(ctx)); /* Copy for A2 */ /* not needed for last one */
90 HMAC_Update(&ctx,seed,seed_len);
91
92 if (olen > chunk)
93 {
94 HMAC_Final(&ctx,out,&j);
95 out+=j;
96 olen-=j;
97 HMAC_Final(&ctx_tmp,A1,&A1_len); /* calc the next A1 value */
98 }
99 else /* last one */
100 {
101 HMAC_Final(&ctx,A1,&A1_len);
102 memcpy(out,A1,olen);
103 break;
104 }
105 }
106 HMAC_cleanup(&ctx);
107 HMAC_cleanup(&ctx_tmp);
108 memset(A1,0,sizeof(A1));
109 }
110
111static void tls1_PRF(const EVP_MD *md5, const EVP_MD *sha1,
112 unsigned char *label, int label_len,
113 const unsigned char *sec, int slen, unsigned char *out1,
114 unsigned char *out2, int olen)
115 {
116 int len,i;
117 const unsigned char *S1,*S2;
118
119 len=slen/2;
120 S1=sec;
121 S2= &(sec[len]);
122 len+=(slen&1); /* add for odd, make longer */
123
124
125 tls1_P_hash(md5 ,S1,len,label,label_len,out1,olen);
126 tls1_P_hash(sha1,S2,len,label,label_len,out2,olen);
127
128 for (i=0; i<olen; i++)
129 out1[i]^=out2[i];
130 }
131
132static void tls1_generate_key_block(SSL *s, unsigned char *km,
133 unsigned char *tmp, int num)
134 {
135 unsigned char *p;
136 unsigned char buf[SSL3_RANDOM_SIZE*2+
137 TLS_MD_MAX_CONST_SIZE];
138 p=buf;
139
140 memcpy(p,TLS_MD_KEY_EXPANSION_CONST,
141 TLS_MD_KEY_EXPANSION_CONST_SIZE);
142 p+=TLS_MD_KEY_EXPANSION_CONST_SIZE;
143 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
144 p+=SSL3_RANDOM_SIZE;
145 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
146 p+=SSL3_RANDOM_SIZE;
147
148 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(p-buf),
149 s->session->master_key,s->session->master_key_length,
150 km,tmp,num);
151 }
152
153int tls1_change_cipher_state(SSL *s, int which)
154 {
155 static const unsigned char empty[]="";
156 unsigned char *p,*key_block,*mac_secret;
157 unsigned char *exp_label,buf[TLS_MD_MAX_CONST_SIZE+
158 SSL3_RANDOM_SIZE*2];
159 unsigned char tmp1[EVP_MAX_KEY_LENGTH];
160 unsigned char tmp2[EVP_MAX_KEY_LENGTH];
161 unsigned char iv1[EVP_MAX_IV_LENGTH*2];
162 unsigned char iv2[EVP_MAX_IV_LENGTH*2];
163 unsigned char *ms,*key,*iv,*er1,*er2;
164 int client_write;
165 EVP_CIPHER_CTX *dd;
166 const EVP_CIPHER *c;
167 const SSL_COMP *comp;
168 const EVP_MD *m;
169 int _exp,n,i,j,k,exp_label_len,cl;
170
171 _exp=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
172 c=s->s3->tmp.new_sym_enc;
173 m=s->s3->tmp.new_hash;
174 comp=s->s3->tmp.new_compression;
175 key_block=s->s3->tmp.key_block;
176
177 if (which & SSL3_CC_READ)
178 {
179 if ((s->enc_read_ctx == NULL) &&
180 ((s->enc_read_ctx=(EVP_CIPHER_CTX *)
181 OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
182 goto err;
183 dd= s->enc_read_ctx;
184 s->read_hash=m;
185 if (s->expand != NULL)
186 {
187 COMP_CTX_free(s->expand);
188 s->expand=NULL;
189 }
190 if (comp != NULL)
191 {
192 s->expand=COMP_CTX_new(comp->method);
193 if (s->expand == NULL)
194 {
195 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
196 goto err2;
197 }
198 if (s->s3->rrec.comp == NULL)
199 s->s3->rrec.comp=(unsigned char *)
200 OPENSSL_malloc(SSL3_RT_MAX_ENCRYPTED_LENGTH);
201 if (s->s3->rrec.comp == NULL)
202 goto err;
203 }
204 memset(&(s->s3->read_sequence[0]),0,8);
205 mac_secret= &(s->s3->read_mac_secret[0]);
206 }
207 else
208 {
209 if ((s->enc_write_ctx == NULL) &&
210 ((s->enc_write_ctx=(EVP_CIPHER_CTX *)
211 OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
212 goto err;
213 dd= s->enc_write_ctx;
214 s->write_hash=m;
215 if (s->compress != NULL)
216 {
217 COMP_CTX_free(s->compress);
218 s->compress=NULL;
219 }
220 if (comp != NULL)
221 {
222 s->compress=COMP_CTX_new(comp->method);
223 if (s->compress == NULL)
224 {
225 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
226 goto err2;
227 }
228 }
229 memset(&(s->s3->write_sequence[0]),0,8);
230 mac_secret= &(s->s3->write_mac_secret[0]);
231 }
232
233 EVP_CIPHER_CTX_init(dd);
234
235 p=s->s3->tmp.key_block;
236 i=EVP_MD_size(m);
237 cl=EVP_CIPHER_key_length(c);
238 j=_exp ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
239 cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
240 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
241 k=EVP_CIPHER_iv_length(c);
242 er1= &(s->s3->client_random[0]);
243 er2= &(s->s3->server_random[0]);
244 if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
245 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
246 {
247 ms= &(p[ 0]); n=i+i;
248 key= &(p[ n]); n+=j+j;
249 iv= &(p[ n]); n+=k+k;
250 exp_label=(unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST;
251 exp_label_len=TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE;
252 client_write=1;
253 }
254 else
255 {
256 n=i;
257 ms= &(p[ n]); n+=i+j;
258 key= &(p[ n]); n+=j+k;
259 iv= &(p[ n]); n+=k;
260 exp_label=(unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST;
261 exp_label_len=TLS_MD_SERVER_WRITE_KEY_CONST_SIZE;
262 client_write=0;
263 }
264
265 if (n > s->s3->tmp.key_block_length)
266 {
267 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_INTERNAL_ERROR);
268 goto err2;
269 }
270
271 memcpy(mac_secret,ms,i);
272#ifdef TLS_DEBUG
273printf("which = %04X\nmac key=",which);
274{ int z; for (z=0; z<i; z++) printf("%02X%c",ms[z],((z+1)%16)?' ':'\n'); }
275#endif
276 if (_exp)
277 {
278 /* In here I set both the read and write key/iv to the
279 * same value since only the correct one will be used :-).
280 */
281 p=buf;
282 memcpy(p,exp_label,exp_label_len);
283 p+=exp_label_len;
284 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
285 p+=SSL3_RANDOM_SIZE;
286 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
287 p+=SSL3_RANDOM_SIZE;
288 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(p-buf),key,j,
289 tmp1,tmp2,EVP_CIPHER_key_length(c));
290 key=tmp1;
291
292 if (k > 0)
293 {
294 p=buf;
295 memcpy(p,TLS_MD_IV_BLOCK_CONST,
296 TLS_MD_IV_BLOCK_CONST_SIZE);
297 p+=TLS_MD_IV_BLOCK_CONST_SIZE;
298 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
299 p+=SSL3_RANDOM_SIZE;
300 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
301 p+=SSL3_RANDOM_SIZE;
302 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,p-buf,empty,0,
303 iv1,iv2,k*2);
304 if (client_write)
305 iv=iv1;
306 else
307 iv= &(iv1[k]);
308 }
309 }
310
311 s->session->key_arg_length=0;
312
313 EVP_CipherInit(dd,c,key,iv,(which & SSL3_CC_WRITE));
314#ifdef TLS_DEBUG
315printf("which = %04X\nkey=",which);
316{ int z; for (z=0; z<EVP_CIPHER_key_length(c); z++) printf("%02X%c",key[z],((z+1)%16)?' ':'\n'); }
317printf("\niv=");
318{ int z; for (z=0; z<k; z++) printf("%02X%c",iv[z],((z+1)%16)?' ':'\n'); }
319printf("\n");
320#endif
321
322 memset(tmp1,0,sizeof(tmp1));
323 memset(tmp2,0,sizeof(tmp1));
324 memset(iv1,0,sizeof(iv1));
325 memset(iv2,0,sizeof(iv2));
326 return(1);
327err:
328 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
329err2:
330 return(0);
331 }
332
333int tls1_setup_key_block(SSL *s)
334 {
335 unsigned char *p1,*p2;
336 const EVP_CIPHER *c;
337 const EVP_MD *hash;
338 int num;
339 SSL_COMP *comp;
340
341 if (s->s3->tmp.key_block_length != 0)
342 return(1);
343
344 if (!ssl_cipher_get_evp(s->session,&c,&hash,&comp))
345 {
346 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
347 return(0);
348 }
349
350 s->s3->tmp.new_sym_enc=c;
351 s->s3->tmp.new_hash=hash;
352
353 num=EVP_CIPHER_key_length(c)+EVP_MD_size(hash)+EVP_CIPHER_iv_length(c);
354 num*=2;
355
356 ssl3_cleanup_key_block(s);
357
358 if ((p1=(unsigned char *)OPENSSL_malloc(num)) == NULL)
359 goto err;
360 if ((p2=(unsigned char *)OPENSSL_malloc(num)) == NULL)
361 goto err;
362
363 s->s3->tmp.key_block_length=num;
364 s->s3->tmp.key_block=p1;
365
366
367#ifdef TLS_DEBUG
368printf("client random\n");
369{ int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->client_random[z],((z+1)%16)?' ':'\n'); }
370printf("server random\n");
371{ int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->server_random[z],((z+1)%16)?' ':'\n'); }
372printf("pre-master\n");
373{ int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); }
374#endif
375 tls1_generate_key_block(s,p1,p2,num);
376 memset(p2,0,num);
377 OPENSSL_free(p2);
378#ifdef TLS_DEBUG
379printf("\nkey block\n");
380{ int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); }
381#endif
382
383 return(1);
384err:
385 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
386 return(0);
387 }
388
389int tls1_enc(SSL *s, int send)
390 {
391 SSL3_RECORD *rec;
392 EVP_CIPHER_CTX *ds;
393 unsigned long l;
394 int bs,i,ii,j,k,n=0;
395 const EVP_CIPHER *enc;
396
397 if (send)
398 {
399 if (s->write_hash != NULL)
400 n=EVP_MD_size(s->write_hash);
401 ds=s->enc_write_ctx;
402 rec= &(s->s3->wrec);
403 if (s->enc_write_ctx == NULL)
404 enc=NULL;
405 else
406 enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
407 }
408 else
409 {
410 if (s->read_hash != NULL)
411 n=EVP_MD_size(s->read_hash);
412 ds=s->enc_read_ctx;
413 rec= &(s->s3->rrec);
414 if (s->enc_read_ctx == NULL)
415 enc=NULL;
416 else
417 enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
418 }
419
420 if ((s->session == NULL) || (ds == NULL) ||
421 (enc == NULL))
422 {
423 memmove(rec->data,rec->input,rec->length);
424 rec->input=rec->data;
425 }
426 else
427 {
428 l=rec->length;
429 bs=EVP_CIPHER_block_size(ds->cipher);
430
431 if ((bs != 1) && send)
432 {
433 i=bs-((int)l%bs);
434
435 /* Add weird padding of upto 256 bytes */
436
437 /* we need to add 'i' padding bytes of value j */
438 j=i-1;
439 if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG)
440 {
441 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
442 j++;
443 }
444 for (k=(int)l; k<(int)(l+i); k++)
445 rec->input[k]=j;
446 l+=i;
447 rec->length+=i;
448 }
449
450 if (!send)
451 {
452 if (l == 0 || l%bs != 0)
453 {
454 SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
455 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPT_ERROR);
456 return(0);
457 }
458 }
459
460 EVP_Cipher(ds,rec->data,rec->input,l);
461
462 if ((bs != 1) && !send)
463 {
464 ii=i=rec->data[l-1]; /* padding_length */
465 i++;
466 if (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG)
467 {
468 /* First packet is even in size, so check */
469 if ((memcmp(s->s3->read_sequence,
470 "\0\0\0\0\0\0\0\0",8) == 0) && !(ii & 1))
471 s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG;
472 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
473 i--;
474 }
475 /* TLS 1.0 does not bound the number of padding bytes by the block size.
476 * All of them must have value 'padding_length'. */
477 if (i > (int)rec->length)
478 {
479 SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
480 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
481 return(0);
482 }
483 for (j=(int)(l-i); j<(int)l; j++)
484 {
485 if (rec->data[j] != ii)
486 {
487 SSLerr(SSL_F_TLS1_ENC,SSL_R_DECRYPTION_FAILED);
488 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
489 return(0);
490 }
491 }
492 rec->length-=i;
493 }
494 }
495 return(1);
496 }
497
498int tls1_cert_verify_mac(SSL *s, EVP_MD_CTX *in_ctx, unsigned char *out)
499 {
500 unsigned int ret;
501 EVP_MD_CTX ctx;
502
503 EVP_MD_CTX_copy(&ctx,in_ctx);
504 EVP_DigestFinal(&ctx,out,&ret);
505 return((int)ret);
506 }
507
508int tls1_final_finish_mac(SSL *s, EVP_MD_CTX *in1_ctx, EVP_MD_CTX *in2_ctx,
509 const char *str, int slen, unsigned char *out)
510 {
511 unsigned int i;
512 EVP_MD_CTX ctx;
513 unsigned char buf[TLS_MD_MAX_CONST_SIZE+MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
514 unsigned char *q,buf2[12];
515
516 q=buf;
517 memcpy(q,str,slen);
518 q+=slen;
519
520 EVP_MD_CTX_copy(&ctx,in1_ctx);
521 EVP_DigestFinal(&ctx,q,&i);
522 q+=i;
523 EVP_MD_CTX_copy(&ctx,in2_ctx);
524 EVP_DigestFinal(&ctx,q,&i);
525 q+=i;
526
527 tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(q-buf),
528 s->session->master_key,s->session->master_key_length,
529 out,buf2,12);
530 memset(&ctx,0,sizeof(EVP_MD_CTX));
531
532 return((int)12);
533 }
534
535int tls1_mac(SSL *ssl, unsigned char *md, int send)
536 {
537 SSL3_RECORD *rec;
538 unsigned char *mac_sec,*seq;
539 const EVP_MD *hash;
540 unsigned int md_size;
541 int i;
542 HMAC_CTX hmac;
543 unsigned char buf[5];
544
545 if (send)
546 {
547 rec= &(ssl->s3->wrec);
548 mac_sec= &(ssl->s3->write_mac_secret[0]);
549 seq= &(ssl->s3->write_sequence[0]);
550 hash=ssl->write_hash;
551 }
552 else
553 {
554 rec= &(ssl->s3->rrec);
555 mac_sec= &(ssl->s3->read_mac_secret[0]);
556 seq= &(ssl->s3->read_sequence[0]);
557 hash=ssl->read_hash;
558 }
559
560 md_size=EVP_MD_size(hash);
561
562 buf[0]=rec->type;
563 buf[1]=TLS1_VERSION_MAJOR;
564 buf[2]=TLS1_VERSION_MINOR;
565 buf[3]=rec->length>>8;
566 buf[4]=rec->length&0xff;
567
568 /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
569 HMAC_Init(&hmac,mac_sec,EVP_MD_size(hash),hash);
570 HMAC_Update(&hmac,seq,8);
571 HMAC_Update(&hmac,buf,5);
572 HMAC_Update(&hmac,rec->input,rec->length);
573 HMAC_Final(&hmac,md,&md_size);
574
575#ifdef TLS_DEBUG
576printf("sec=");
577{unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",mac_sec[z]); printf("\n"); }
578printf("seq=");
579{int z; for (z=0; z<8; z++) printf("%02X ",seq[z]); printf("\n"); }
580printf("buf=");
581{int z; for (z=0; z<5; z++) printf("%02X ",buf[z]); printf("\n"); }
582printf("rec=");
583{unsigned int z; for (z=0; z<rec->length; z++) printf("%02X ",buf[z]); printf("\n"); }
584#endif
585
586 for (i=7; i>=0; i--)
587 {
588 ++seq[i];
589 if (seq[i] != 0) break;
590 }
591
592#ifdef TLS_DEBUG
593{unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",md[z]); printf("\n"); }
594#endif
595 return(md_size);
596 }
597
598int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
599 int len)
600 {
601 unsigned char buf[SSL3_RANDOM_SIZE*2+TLS_MD_MASTER_SECRET_CONST_SIZE];
602 unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
603
604 /* Setup the stuff to munge */
605 memcpy(buf,TLS_MD_MASTER_SECRET_CONST,
606 TLS_MD_MASTER_SECRET_CONST_SIZE);
607 memcpy(&(buf[TLS_MD_MASTER_SECRET_CONST_SIZE]),
608 s->s3->client_random,SSL3_RANDOM_SIZE);
609 memcpy(&(buf[SSL3_RANDOM_SIZE+TLS_MD_MASTER_SECRET_CONST_SIZE]),
610 s->s3->server_random,SSL3_RANDOM_SIZE);
611 tls1_PRF(s->ctx->md5,s->ctx->sha1,
612 buf,TLS_MD_MASTER_SECRET_CONST_SIZE+SSL3_RANDOM_SIZE*2,p,len,
613 s->session->master_key,buff,SSL3_MASTER_SECRET_SIZE);
614 return(SSL3_MASTER_SECRET_SIZE);
615 }
616
617int tls1_alert_code(int code)
618 {
619 switch (code)
620 {
621 case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
622 case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
623 case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
624 case SSL_AD_DECRYPTION_FAILED: return(TLS1_AD_DECRYPTION_FAILED);
625 case SSL_AD_RECORD_OVERFLOW: return(TLS1_AD_RECORD_OVERFLOW);
626 case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
627 case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
628 case SSL_AD_NO_CERTIFICATE: return(-1);
629 case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
630 case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
631 case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
632 case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
633 case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
634 case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
635 case SSL_AD_UNKNOWN_CA: return(TLS1_AD_UNKNOWN_CA);
636 case SSL_AD_ACCESS_DENIED: return(TLS1_AD_ACCESS_DENIED);
637 case SSL_AD_DECODE_ERROR: return(TLS1_AD_DECODE_ERROR);
638 case SSL_AD_DECRYPT_ERROR: return(TLS1_AD_DECRYPT_ERROR);
639 case SSL_AD_EXPORT_RESTRICTION: return(TLS1_AD_EXPORT_RESTRICTION);
640 case SSL_AD_PROTOCOL_VERSION: return(TLS1_AD_PROTOCOL_VERSION);
641 case SSL_AD_INSUFFICIENT_SECURITY:return(TLS1_AD_INSUFFICIENT_SECURITY);
642 case SSL_AD_INTERNAL_ERROR: return(TLS1_AD_INTERNAL_ERROR);
643 case SSL_AD_USER_CANCELLED: return(TLS1_AD_USER_CANCELLED);
644 case SSL_AD_NO_RENEGOTIATION: return(TLS1_AD_NO_RENEGOTIATION);
645 default: return(-1);
646 }
647 }
648
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-19 22:01:40 +0000