summaryrefslogtreecommitdiff
path: root/src/lib/libssl/t1_enc.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/libssl/t1_enc.c')
-rw-r--r--src/lib/libssl/t1_enc.c1051
1 files changed, 1051 insertions, 0 deletions
diff --git a/src/lib/libssl/t1_enc.c b/src/lib/libssl/t1_enc.c
new file mode 100644
index 0000000000..9719541f2b
--- /dev/null
+++ b/src/lib/libssl/t1_enc.c
@@ -0,0 +1,1051 @@
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 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
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
71 * distribution.
72 *
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/)"
77 *
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.
82 *
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.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
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 * ====================================================================
105 *
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).
109 *
110 */
111/* ====================================================================
112 * Copyright 2005 Nokia. All rights reserved.
113 *
114 * The portions of the attached software ("Contribution") is developed by
115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
116 * license.
117 *
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.
121 *
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.
125 *
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.
130 *
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
135 * OTHERWISE.
136 */
137
138#include <stdio.h>
139#include "ssl_locl.h"
140#ifndef OPENSSL_NO_COMP
141#include <openssl/comp.h>
142#endif
143#include <openssl/evp.h>
144#include <openssl/hmac.h>
145#include <openssl/md5.h>
146#ifdef KSSL_DEBUG
147#include <openssl/des.h>
148#endif
149
150/* seed1 through seed5 are virtually concatenated */
151static int tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
152 int sec_len,
153 const void *seed1, int seed1_len,
154 const void *seed2, int seed2_len,
155 const void *seed3, int seed3_len,
156 const void *seed4, int seed4_len,
157 const void *seed5, int seed5_len,
158 unsigned char *out, int olen)
159 {
160 int chunk,n;
161 unsigned int j;
162 HMAC_CTX ctx;
163 HMAC_CTX ctx_tmp;
164 unsigned char A1[EVP_MAX_MD_SIZE];
165 unsigned int A1_len;
166 int ret = 0;
167
168 chunk=EVP_MD_size(md);
169 OPENSSL_assert(chunk >= 0);
170
171 HMAC_CTX_init(&ctx);
172 HMAC_CTX_init(&ctx_tmp);
173 if (!HMAC_Init_ex(&ctx,sec,sec_len,md, NULL))
174 goto err;
175 if (!HMAC_Init_ex(&ctx_tmp,sec,sec_len,md, NULL))
176 goto err;
177 if (seed1 != NULL && !HMAC_Update(&ctx,seed1,seed1_len))
178 goto err;
179 if (seed2 != NULL && !HMAC_Update(&ctx,seed2,seed2_len))
180 goto err;
181 if (seed3 != NULL && !HMAC_Update(&ctx,seed3,seed3_len))
182 goto err;
183 if (seed4 != NULL && !HMAC_Update(&ctx,seed4,seed4_len))
184 goto err;
185 if (seed5 != NULL && !HMAC_Update(&ctx,seed5,seed5_len))
186 goto err;
187 if (!HMAC_Final(&ctx,A1,&A1_len))
188 goto err;
189
190 n=0;
191 for (;;)
192 {
193 if (!HMAC_Init_ex(&ctx,NULL,0,NULL,NULL)) /* re-init */
194 goto err;
195 if (!HMAC_Init_ex(&ctx_tmp,NULL,0,NULL,NULL)) /* re-init */
196 goto err;
197 if (!HMAC_Update(&ctx,A1,A1_len))
198 goto err;
199 if (!HMAC_Update(&ctx_tmp,A1,A1_len))
200 goto err;
201 if (seed1 != NULL && !HMAC_Update(&ctx,seed1,seed1_len))
202 goto err;
203 if (seed2 != NULL && !HMAC_Update(&ctx,seed2,seed2_len))
204 goto err;
205 if (seed3 != NULL && !HMAC_Update(&ctx,seed3,seed3_len))
206 goto err;
207 if (seed4 != NULL && !HMAC_Update(&ctx,seed4,seed4_len))
208 goto err;
209 if (seed5 != NULL && !HMAC_Update(&ctx,seed5,seed5_len))
210 goto err;
211
212 if (olen > chunk)
213 {
214 if (!HMAC_Final(&ctx,out,&j))
215 goto err;
216 out+=j;
217 olen-=j;
218 if (!HMAC_Final(&ctx_tmp,A1,&A1_len)) /* calc the next A1 value */
219 goto err;
220 }
221 else /* last one */
222 {
223 if (!HMAC_Final(&ctx,A1,&A1_len))
224 goto err;
225 memcpy(out,A1,olen);
226 break;
227 }
228 }
229 ret = 1;
230err:
231 HMAC_CTX_cleanup(&ctx);
232 HMAC_CTX_cleanup(&ctx_tmp);
233 OPENSSL_cleanse(A1,sizeof(A1));
234 return ret;
235 }
236
237/* seed1 through seed5 are virtually concatenated */
238static int tls1_PRF(long digest_mask,
239 const void *seed1, int seed1_len,
240 const void *seed2, int seed2_len,
241 const void *seed3, int seed3_len,
242 const void *seed4, int seed4_len,
243 const void *seed5, int seed5_len,
244 const unsigned char *sec, int slen,
245 unsigned char *out1,
246 unsigned char *out2, int olen)
247 {
248 int len,i,idx,count;
249 const unsigned char *S1;
250 long m;
251 const EVP_MD *md;
252 int ret = 0;
253
254 /* Count number of digests and partition sec evenly */
255 count=0;
256 for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) {
257 if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) count++;
258 }
259 len=slen/count;
260 S1=sec;
261 memset(out1,0,olen);
262 for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) {
263 if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) {
264 if (!md) {
265 SSLerr(SSL_F_TLS1_PRF,
266 SSL_R_UNSUPPORTED_DIGEST_TYPE);
267 goto err;
268 }
269 if (!tls1_P_hash(md ,S1,len+(slen&1),
270 seed1,seed1_len,seed2,seed2_len,seed3,seed3_len,seed4,seed4_len,seed5,seed5_len,
271 out2,olen))
272 goto err;
273 S1+=len;
274 for (i=0; i<olen; i++)
275 {
276 out1[i]^=out2[i];
277 }
278 }
279 }
280 ret = 1;
281err:
282 return ret;
283}
284static int tls1_generate_key_block(SSL *s, unsigned char *km,
285 unsigned char *tmp, int num)
286 {
287 int ret;
288 ret = tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
289 TLS_MD_KEY_EXPANSION_CONST,TLS_MD_KEY_EXPANSION_CONST_SIZE,
290 s->s3->server_random,SSL3_RANDOM_SIZE,
291 s->s3->client_random,SSL3_RANDOM_SIZE,
292 NULL,0,NULL,0,
293 s->session->master_key,s->session->master_key_length,
294 km,tmp,num);
295#ifdef KSSL_DEBUG
296 printf("tls1_generate_key_block() ==> %d byte master_key =\n\t",
297 s->session->master_key_length);
298 {
299 int i;
300 for (i=0; i < s->session->master_key_length; i++)
301 {
302 printf("%02X", s->session->master_key[i]);
303 }
304 printf("\n"); }
305#endif /* KSSL_DEBUG */
306 return ret;
307 }
308
309int tls1_change_cipher_state(SSL *s, int which)
310 {
311 static const unsigned char empty[]="";
312 unsigned char *p,*key_block,*mac_secret;
313 unsigned char *exp_label;
314 unsigned char tmp1[EVP_MAX_KEY_LENGTH];
315 unsigned char tmp2[EVP_MAX_KEY_LENGTH];
316 unsigned char iv1[EVP_MAX_IV_LENGTH*2];
317 unsigned char iv2[EVP_MAX_IV_LENGTH*2];
318 unsigned char *ms,*key,*iv,*er1,*er2;
319 int client_write;
320 EVP_CIPHER_CTX *dd;
321 const EVP_CIPHER *c;
322#ifndef OPENSSL_NO_COMP
323 const SSL_COMP *comp;
324#endif
325 const EVP_MD *m;
326 int mac_type;
327 int *mac_secret_size;
328 EVP_MD_CTX *mac_ctx;
329 EVP_PKEY *mac_key;
330 int is_export,n,i,j,k,exp_label_len,cl;
331 int reuse_dd = 0;
332
333 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
334 c=s->s3->tmp.new_sym_enc;
335 m=s->s3->tmp.new_hash;
336 mac_type = s->s3->tmp.new_mac_pkey_type;
337#ifndef OPENSSL_NO_COMP
338 comp=s->s3->tmp.new_compression;
339#endif
340 key_block=s->s3->tmp.key_block;
341
342#ifdef KSSL_DEBUG
343 printf("tls1_change_cipher_state(which= %d) w/\n", which);
344 printf("\talg= %ld/%ld, comp= %p\n",
345 s->s3->tmp.new_cipher->algorithm_mkey,
346 s->s3->tmp.new_cipher->algorithm_auth,
347 comp);
348 printf("\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c);
349 printf("\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n",
350 c->nid,c->block_size,c->key_len,c->iv_len);
351 printf("\tkey_block: len= %d, data= ", s->s3->tmp.key_block_length);
352 {
353 int i;
354 for (i=0; i<s->s3->tmp.key_block_length; i++)
355 printf("%02x", key_block[i]); printf("\n");
356 }
357#endif /* KSSL_DEBUG */
358
359 if (which & SSL3_CC_READ)
360 {
361 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
362 s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM;
363 else
364 s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM;
365
366 if (s->enc_read_ctx != NULL)
367 reuse_dd = 1;
368 else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
369 goto err;
370 else
371 /* make sure it's intialized in case we exit later with an error */
372 EVP_CIPHER_CTX_init(s->enc_read_ctx);
373 dd= s->enc_read_ctx;
374 mac_ctx=ssl_replace_hash(&s->read_hash,NULL);
375#ifndef OPENSSL_NO_COMP
376 if (s->expand != NULL)
377 {
378 COMP_CTX_free(s->expand);
379 s->expand=NULL;
380 }
381 if (comp != NULL)
382 {
383 s->expand=COMP_CTX_new(comp->method);
384 if (s->expand == NULL)
385 {
386 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
387 goto err2;
388 }
389 if (s->s3->rrec.comp == NULL)
390 s->s3->rrec.comp=(unsigned char *)
391 OPENSSL_malloc(SSL3_RT_MAX_ENCRYPTED_LENGTH);
392 if (s->s3->rrec.comp == NULL)
393 goto err;
394 }
395#endif
396 /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
397 if (s->version != DTLS1_VERSION)
398 memset(&(s->s3->read_sequence[0]),0,8);
399 mac_secret= &(s->s3->read_mac_secret[0]);
400 mac_secret_size=&(s->s3->read_mac_secret_size);
401 }
402 else
403 {
404 if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC)
405 s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM;
406 else
407 s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM;
408 if (s->enc_write_ctx != NULL)
409 reuse_dd = 1;
410 else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL)
411 goto err;
412 else
413 /* make sure it's intialized in case we exit later with an error */
414 EVP_CIPHER_CTX_init(s->enc_write_ctx);
415 dd= s->enc_write_ctx;
416 mac_ctx = ssl_replace_hash(&s->write_hash,NULL);
417#ifndef OPENSSL_NO_COMP
418 if (s->compress != NULL)
419 {
420 COMP_CTX_free(s->compress);
421 s->compress=NULL;
422 }
423 if (comp != NULL)
424 {
425 s->compress=COMP_CTX_new(comp->method);
426 if (s->compress == NULL)
427 {
428 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR);
429 goto err2;
430 }
431 }
432#endif
433 /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */
434 if (s->version != DTLS1_VERSION)
435 memset(&(s->s3->write_sequence[0]),0,8);
436 mac_secret= &(s->s3->write_mac_secret[0]);
437 mac_secret_size = &(s->s3->write_mac_secret_size);
438 }
439
440 if (reuse_dd)
441 EVP_CIPHER_CTX_cleanup(dd);
442
443 p=s->s3->tmp.key_block;
444 i=*mac_secret_size=s->s3->tmp.new_mac_secret_size;
445
446 cl=EVP_CIPHER_key_length(c);
447 j=is_export ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ?
448 cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl;
449 /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */
450 k=EVP_CIPHER_iv_length(c);
451 er1= &(s->s3->client_random[0]);
452 er2= &(s->s3->server_random[0]);
453 if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) ||
454 (which == SSL3_CHANGE_CIPHER_SERVER_READ))
455 {
456 ms= &(p[ 0]); n=i+i;
457 key= &(p[ n]); n+=j+j;
458 iv= &(p[ n]); n+=k+k;
459 exp_label=(unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST;
460 exp_label_len=TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE;
461 client_write=1;
462 }
463 else
464 {
465 n=i;
466 ms= &(p[ n]); n+=i+j;
467 key= &(p[ n]); n+=j+k;
468 iv= &(p[ n]); n+=k;
469 exp_label=(unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST;
470 exp_label_len=TLS_MD_SERVER_WRITE_KEY_CONST_SIZE;
471 client_write=0;
472 }
473
474 if (n > s->s3->tmp.key_block_length)
475 {
476 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR);
477 goto err2;
478 }
479
480 memcpy(mac_secret,ms,i);
481 mac_key = EVP_PKEY_new_mac_key(mac_type, NULL,
482 mac_secret,*mac_secret_size);
483 EVP_DigestSignInit(mac_ctx,NULL,m,NULL,mac_key);
484 EVP_PKEY_free(mac_key);
485#ifdef TLS_DEBUG
486printf("which = %04X\nmac key=",which);
487{ int z; for (z=0; z<i; z++) printf("%02X%c",ms[z],((z+1)%16)?' ':'\n'); }
488#endif
489 if (is_export)
490 {
491 /* In here I set both the read and write key/iv to the
492 * same value since only the correct one will be used :-).
493 */
494 if (!tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
495 exp_label,exp_label_len,
496 s->s3->client_random,SSL3_RANDOM_SIZE,
497 s->s3->server_random,SSL3_RANDOM_SIZE,
498 NULL,0,NULL,0,
499 key,j,tmp1,tmp2,EVP_CIPHER_key_length(c)))
500 goto err2;
501 key=tmp1;
502
503 if (k > 0)
504 {
505 if (!tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
506 TLS_MD_IV_BLOCK_CONST,TLS_MD_IV_BLOCK_CONST_SIZE,
507 s->s3->client_random,SSL3_RANDOM_SIZE,
508 s->s3->server_random,SSL3_RANDOM_SIZE,
509 NULL,0,NULL,0,
510 empty,0,iv1,iv2,k*2))
511 goto err2;
512 if (client_write)
513 iv=iv1;
514 else
515 iv= &(iv1[k]);
516 }
517 }
518
519 s->session->key_arg_length=0;
520#ifdef KSSL_DEBUG
521 {
522 int i;
523 printf("EVP_CipherInit_ex(dd,c,key=,iv=,which)\n");
524 printf("\tkey= "); for (i=0; i<c->key_len; i++) printf("%02x", key[i]);
525 printf("\n");
526 printf("\t iv= "); for (i=0; i<c->iv_len; i++) printf("%02x", iv[i]);
527 printf("\n");
528 }
529#endif /* KSSL_DEBUG */
530
531 EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE));
532#ifdef TLS_DEBUG
533printf("which = %04X\nkey=",which);
534{ int z; for (z=0; z<EVP_CIPHER_key_length(c); z++) printf("%02X%c",key[z],((z+1)%16)?' ':'\n'); }
535printf("\niv=");
536{ int z; for (z=0; z<k; z++) printf("%02X%c",iv[z],((z+1)%16)?' ':'\n'); }
537printf("\n");
538#endif
539
540 OPENSSL_cleanse(tmp1,sizeof(tmp1));
541 OPENSSL_cleanse(tmp2,sizeof(tmp1));
542 OPENSSL_cleanse(iv1,sizeof(iv1));
543 OPENSSL_cleanse(iv2,sizeof(iv2));
544 return(1);
545err:
546 SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE);
547err2:
548 return(0);
549 }
550
551int tls1_setup_key_block(SSL *s)
552 {
553 unsigned char *p1,*p2=NULL;
554 const EVP_CIPHER *c;
555 const EVP_MD *hash;
556 int num;
557 SSL_COMP *comp;
558 int mac_type= NID_undef,mac_secret_size=0;
559 int ret=0;
560
561#ifdef KSSL_DEBUG
562 printf ("tls1_setup_key_block()\n");
563#endif /* KSSL_DEBUG */
564
565 if (s->s3->tmp.key_block_length != 0)
566 return(1);
567
568 if (!ssl_cipher_get_evp(s->session,&c,&hash,&mac_type,&mac_secret_size,&comp))
569 {
570 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
571 return(0);
572 }
573
574 s->s3->tmp.new_sym_enc=c;
575 s->s3->tmp.new_hash=hash;
576 s->s3->tmp.new_mac_pkey_type = mac_type;
577 s->s3->tmp.new_mac_secret_size = mac_secret_size;
578 num=EVP_CIPHER_key_length(c)+mac_secret_size+EVP_CIPHER_iv_length(c);
579 num*=2;
580
581 ssl3_cleanup_key_block(s);
582
583 if ((p1=(unsigned char *)OPENSSL_malloc(num)) == NULL)
584 {
585 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
586 goto err;
587 }
588
589 s->s3->tmp.key_block_length=num;
590 s->s3->tmp.key_block=p1;
591
592 if ((p2=(unsigned char *)OPENSSL_malloc(num)) == NULL)
593 {
594 SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE);
595 goto err;
596 }
597
598#ifdef TLS_DEBUG
599printf("client random\n");
600{ int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->client_random[z],((z+1)%16)?' ':'\n'); }
601printf("server random\n");
602{ int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->server_random[z],((z+1)%16)?' ':'\n'); }
603printf("pre-master\n");
604{ int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); }
605#endif
606 if (!tls1_generate_key_block(s,p1,p2,num))
607 goto err;
608#ifdef TLS_DEBUG
609printf("\nkey block\n");
610{ int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); }
611#endif
612
613 if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS))
614 {
615 /* enable vulnerability countermeasure for CBC ciphers with
616 * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
617 */
618 s->s3->need_empty_fragments = 1;
619
620 if (s->session->cipher != NULL)
621 {
622 if (s->session->cipher->algorithm_enc == SSL_eNULL)
623 s->s3->need_empty_fragments = 0;
624
625#ifndef OPENSSL_NO_RC4
626 if (s->session->cipher->algorithm_enc == SSL_RC4)
627 s->s3->need_empty_fragments = 0;
628#endif
629 }
630 }
631
632 ret = 1;
633err:
634 if (p2)
635 {
636 OPENSSL_cleanse(p2,num);
637 OPENSSL_free(p2);
638 }
639 return(ret);
640 }
641
642int tls1_enc(SSL *s, int send)
643 {
644 SSL3_RECORD *rec;
645 EVP_CIPHER_CTX *ds;
646 unsigned long l;
647 int bs,i,ii,j,k,n=0;
648 const EVP_CIPHER *enc;
649
650 if (send)
651 {
652 if (EVP_MD_CTX_md(s->write_hash))
653 {
654 n=EVP_MD_CTX_size(s->write_hash);
655 OPENSSL_assert(n >= 0);
656 }
657 ds=s->enc_write_ctx;
658 rec= &(s->s3->wrec);
659 if (s->enc_write_ctx == NULL)
660 enc=NULL;
661 else
662 enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
663 }
664 else
665 {
666 if (EVP_MD_CTX_md(s->read_hash))
667 {
668 n=EVP_MD_CTX_size(s->read_hash);
669 OPENSSL_assert(n >= 0);
670 }
671 ds=s->enc_read_ctx;
672 rec= &(s->s3->rrec);
673 if (s->enc_read_ctx == NULL)
674 enc=NULL;
675 else
676 enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
677 }
678
679#ifdef KSSL_DEBUG
680 printf("tls1_enc(%d)\n", send);
681#endif /* KSSL_DEBUG */
682
683 if ((s->session == NULL) || (ds == NULL) ||
684 (enc == NULL))
685 {
686 memmove(rec->data,rec->input,rec->length);
687 rec->input=rec->data;
688 }
689 else
690 {
691 l=rec->length;
692 bs=EVP_CIPHER_block_size(ds->cipher);
693
694 if ((bs != 1) && send)
695 {
696 i=bs-((int)l%bs);
697
698 /* Add weird padding of upto 256 bytes */
699
700 /* we need to add 'i' padding bytes of value j */
701 j=i-1;
702 if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG)
703 {
704 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
705 j++;
706 }
707 for (k=(int)l; k<(int)(l+i); k++)
708 rec->input[k]=j;
709 l+=i;
710 rec->length+=i;
711 }
712
713#ifdef KSSL_DEBUG
714 {
715 unsigned long ui;
716 printf("EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n",
717 ds,rec->data,rec->input,l);
718 printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%d %d], %d iv_len\n",
719 ds->buf_len, ds->cipher->key_len,
720 DES_KEY_SZ, DES_SCHEDULE_SZ,
721 ds->cipher->iv_len);
722 printf("\t\tIV: ");
723 for (i=0; i<ds->cipher->iv_len; i++) printf("%02X", ds->iv[i]);
724 printf("\n");
725 printf("\trec->input=");
726 for (ui=0; ui<l; ui++) printf(" %02x", rec->input[ui]);
727 printf("\n");
728 }
729#endif /* KSSL_DEBUG */
730
731 if (!send)
732 {
733 if (l == 0 || l%bs != 0)
734 {
735 SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
736 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
737 return 0;
738 }
739 }
740
741 EVP_Cipher(ds,rec->data,rec->input,l);
742
743#ifdef KSSL_DEBUG
744 {
745 unsigned long i;
746 printf("\trec->data=");
747 for (i=0; i<l; i++)
748 printf(" %02x", rec->data[i]); printf("\n");
749 }
750#endif /* KSSL_DEBUG */
751
752 if ((bs != 1) && !send)
753 {
754 ii=i=rec->data[l-1]; /* padding_length */
755 i++;
756 /* NB: if compression is in operation the first packet
757 * may not be of even length so the padding bug check
758 * cannot be performed. This bug workaround has been
759 * around since SSLeay so hopefully it is either fixed
760 * now or no buggy implementation supports compression
761 * [steve]
762 */
763 if ( (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG)
764 && !s->expand)
765 {
766 /* First packet is even in size, so check */
767 if ((memcmp(s->s3->read_sequence,
768 "\0\0\0\0\0\0\0\0",8) == 0) && !(ii & 1))
769 s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG;
770 if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
771 i--;
772 }
773 /* TLS 1.0 does not bound the number of padding bytes by the block size.
774 * All of them must have value 'padding_length'. */
775 if (i > (int)rec->length)
776 {
777 /* Incorrect padding. SSLerr() and ssl3_alert are done
778 * by caller: we don't want to reveal whether this is
779 * a decryption error or a MAC verification failure
780 * (see http://www.openssl.org/~bodo/tls-cbc.txt) */
781 return -1;
782 }
783 for (j=(int)(l-i); j<(int)l; j++)
784 {
785 if (rec->data[j] != ii)
786 {
787 /* Incorrect padding */
788 return -1;
789 }
790 }
791 rec->length-=i;
792 }
793 }
794 return(1);
795 }
796int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *out)
797 {
798 unsigned int ret;
799 EVP_MD_CTX ctx, *d=NULL;
800 int i;
801
802 if (s->s3->handshake_buffer)
803 if (!ssl3_digest_cached_records(s))
804 return 0;
805
806 for (i=0;i<SSL_MAX_DIGEST;i++)
807 {
808 if (s->s3->handshake_dgst[i]&&EVP_MD_CTX_type(s->s3->handshake_dgst[i])==md_nid)
809 {
810 d=s->s3->handshake_dgst[i];
811 break;
812 }
813 }
814 if (!d) {
815 SSLerr(SSL_F_TLS1_CERT_VERIFY_MAC,SSL_R_NO_REQUIRED_DIGEST);
816 return 0;
817 }
818
819 EVP_MD_CTX_init(&ctx);
820 EVP_MD_CTX_copy_ex(&ctx,d);
821 EVP_DigestFinal_ex(&ctx,out,&ret);
822 EVP_MD_CTX_cleanup(&ctx);
823 return((int)ret);
824 }
825
826int tls1_final_finish_mac(SSL *s,
827 const char *str, int slen, unsigned char *out)
828 {
829 unsigned int i;
830 EVP_MD_CTX ctx;
831 unsigned char buf[2*EVP_MAX_MD_SIZE];
832 unsigned char *q,buf2[12];
833 int idx;
834 long mask;
835 int err=0;
836 const EVP_MD *md;
837
838 q=buf;
839
840 if (s->s3->handshake_buffer)
841 if (!ssl3_digest_cached_records(s))
842 return 0;
843
844 EVP_MD_CTX_init(&ctx);
845
846 for (idx=0;ssl_get_handshake_digest(idx,&mask,&md);idx++)
847 {
848 if (mask & s->s3->tmp.new_cipher->algorithm2)
849 {
850 int hashsize = EVP_MD_size(md);
851 if (hashsize < 0 || hashsize > (int)(sizeof buf - (size_t)(q-buf)))
852 {
853 /* internal error: 'buf' is too small for this cipersuite! */
854 err = 1;
855 }
856 else
857 {
858 EVP_MD_CTX_copy_ex(&ctx,s->s3->handshake_dgst[idx]);
859 EVP_DigestFinal_ex(&ctx,q,&i);
860 if (i != (unsigned int)hashsize) /* can't really happen */
861 err = 1;
862 q+=i;
863 }
864 }
865 }
866
867 if (!tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
868 str,slen, buf,(int)(q-buf), NULL,0, NULL,0, NULL,0,
869 s->session->master_key,s->session->master_key_length,
870 out,buf2,sizeof buf2))
871 err = 1;
872 EVP_MD_CTX_cleanup(&ctx);
873
874 if (err)
875 return 0;
876 else
877 return sizeof buf2;
878 }
879
880int tls1_mac(SSL *ssl, unsigned char *md, int send)
881 {
882 SSL3_RECORD *rec;
883 unsigned char *mac_sec,*seq;
884 EVP_MD_CTX *hash;
885 size_t md_size;
886 int i;
887 EVP_MD_CTX hmac, *mac_ctx;
888 unsigned char buf[5];
889 int stream_mac = (send?(ssl->mac_flags & SSL_MAC_FLAG_WRITE_MAC_STREAM):(ssl->mac_flags&SSL_MAC_FLAG_READ_MAC_STREAM));
890 int t;
891
892 if (send)
893 {
894 rec= &(ssl->s3->wrec);
895 mac_sec= &(ssl->s3->write_mac_secret[0]);
896 seq= &(ssl->s3->write_sequence[0]);
897 hash=ssl->write_hash;
898 }
899 else
900 {
901 rec= &(ssl->s3->rrec);
902 mac_sec= &(ssl->s3->read_mac_secret[0]);
903 seq= &(ssl->s3->read_sequence[0]);
904 hash=ssl->read_hash;
905 }
906
907 t=EVP_MD_CTX_size(hash);
908 OPENSSL_assert(t >= 0);
909 md_size=t;
910
911 buf[0]=rec->type;
912 buf[1]=(unsigned char)(ssl->version>>8);
913 buf[2]=(unsigned char)(ssl->version);
914 buf[3]=rec->length>>8;
915 buf[4]=rec->length&0xff;
916
917 /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
918 if (stream_mac)
919 {
920 mac_ctx = hash;
921 }
922 else
923 {
924 EVP_MD_CTX_copy(&hmac,hash);
925 mac_ctx = &hmac;
926 }
927
928 if (ssl->version == DTLS1_VERSION || ssl->version == DTLS1_BAD_VER)
929 {
930 unsigned char dtlsseq[8],*p=dtlsseq;
931
932 s2n(send?ssl->d1->w_epoch:ssl->d1->r_epoch, p);
933 memcpy (p,&seq[2],6);
934
935 EVP_DigestSignUpdate(mac_ctx,dtlsseq,8);
936 }
937 else
938 EVP_DigestSignUpdate(mac_ctx,seq,8);
939
940 EVP_DigestSignUpdate(mac_ctx,buf,5);
941 EVP_DigestSignUpdate(mac_ctx,rec->input,rec->length);
942 t=EVP_DigestSignFinal(mac_ctx,md,&md_size);
943 OPENSSL_assert(t > 0);
944
945 if (!stream_mac) EVP_MD_CTX_cleanup(&hmac);
946#ifdef TLS_DEBUG
947printf("sec=");
948{unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",mac_sec[z]); printf("\n"); }
949printf("seq=");
950{int z; for (z=0; z<8; z++) printf("%02X ",seq[z]); printf("\n"); }
951printf("buf=");
952{int z; for (z=0; z<5; z++) printf("%02X ",buf[z]); printf("\n"); }
953printf("rec=");
954{unsigned int z; for (z=0; z<rec->length; z++) printf("%02X ",buf[z]); printf("\n"); }
955#endif
956
957 if (ssl->version != DTLS1_VERSION && ssl->version != DTLS1_BAD_VER)
958 {
959 for (i=7; i>=0; i--)
960 {
961 ++seq[i];
962 if (seq[i] != 0) break;
963 }
964 }
965
966#ifdef TLS_DEBUG
967{unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",md[z]); printf("\n"); }
968#endif
969 return(md_size);
970 }
971
972int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
973 int len)
974 {
975 unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH];
976 const void *co = NULL, *so = NULL;
977 int col = 0, sol = 0;
978
979#ifdef KSSL_DEBUG
980 printf ("tls1_generate_master_secret(%p,%p, %p, %d)\n", s,out, p,len);
981#endif /* KSSL_DEBUG */
982
983#ifdef TLSEXT_TYPE_opaque_prf_input
984 if (s->s3->client_opaque_prf_input != NULL && s->s3->server_opaque_prf_input != NULL &&
985 s->s3->client_opaque_prf_input_len > 0 &&
986 s->s3->client_opaque_prf_input_len == s->s3->server_opaque_prf_input_len)
987 {
988 co = s->s3->client_opaque_prf_input;
989 col = s->s3->server_opaque_prf_input_len;
990 so = s->s3->server_opaque_prf_input;
991 sol = s->s3->client_opaque_prf_input_len; /* must be same as col (see draft-rescorla-tls-opaque-prf-input-00.txt, section 3.1) */
992 }
993#endif
994
995 tls1_PRF(s->s3->tmp.new_cipher->algorithm2,
996 TLS_MD_MASTER_SECRET_CONST,TLS_MD_MASTER_SECRET_CONST_SIZE,
997 s->s3->client_random,SSL3_RANDOM_SIZE,
998 co, col,
999 s->s3->server_random,SSL3_RANDOM_SIZE,
1000 so, sol,
1001 p,len,
1002 s->session->master_key,buff,sizeof buff);
1003
1004#ifdef KSSL_DEBUG
1005 printf ("tls1_generate_master_secret() complete\n");
1006#endif /* KSSL_DEBUG */
1007 return(SSL3_MASTER_SECRET_SIZE);
1008 }
1009
1010int tls1_alert_code(int code)
1011 {
1012 switch (code)
1013 {
1014 case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY);
1015 case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE);
1016 case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC);
1017 case SSL_AD_DECRYPTION_FAILED: return(TLS1_AD_DECRYPTION_FAILED);
1018 case SSL_AD_RECORD_OVERFLOW: return(TLS1_AD_RECORD_OVERFLOW);
1019 case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE);
1020 case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE);
1021 case SSL_AD_NO_CERTIFICATE: return(-1);
1022 case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE);
1023 case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE);
1024 case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED);
1025 case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED);
1026 case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN);
1027 case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER);
1028 case SSL_AD_UNKNOWN_CA: return(TLS1_AD_UNKNOWN_CA);
1029 case SSL_AD_ACCESS_DENIED: return(TLS1_AD_ACCESS_DENIED);
1030 case SSL_AD_DECODE_ERROR: return(TLS1_AD_DECODE_ERROR);
1031 case SSL_AD_DECRYPT_ERROR: return(TLS1_AD_DECRYPT_ERROR);
1032 case SSL_AD_EXPORT_RESTRICTION: return(TLS1_AD_EXPORT_RESTRICTION);
1033 case SSL_AD_PROTOCOL_VERSION: return(TLS1_AD_PROTOCOL_VERSION);
1034 case SSL_AD_INSUFFICIENT_SECURITY:return(TLS1_AD_INSUFFICIENT_SECURITY);
1035 case SSL_AD_INTERNAL_ERROR: return(TLS1_AD_INTERNAL_ERROR);
1036 case SSL_AD_USER_CANCELLED: return(TLS1_AD_USER_CANCELLED);
1037 case SSL_AD_NO_RENEGOTIATION: return(TLS1_AD_NO_RENEGOTIATION);
1038 case SSL_AD_UNSUPPORTED_EXTENSION: return(TLS1_AD_UNSUPPORTED_EXTENSION);
1039 case SSL_AD_CERTIFICATE_UNOBTAINABLE: return(TLS1_AD_CERTIFICATE_UNOBTAINABLE);
1040 case SSL_AD_UNRECOGNIZED_NAME: return(TLS1_AD_UNRECOGNIZED_NAME);
1041 case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
1042 case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
1043 case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY);
1044#if 0 /* not appropriate for TLS, not used for DTLS */
1045 case DTLS1_AD_MISSING_HANDSHAKE_MESSAGE: return
1046 (DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);
1047#endif
1048 default: return(-1);
1049 }
1050 }
1051
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-26 22:49:13 +0000