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58964a49 RE |
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 | */ | |
82b0bf0b | 58 | /* ==================================================================== |
52b8dad8 | 59 | * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. |
82b0bf0b BM |
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 | */ | |
ddac1974 NL |
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 | */ | |
58964a49 RE |
137 | |
138 | #include <stdio.h> | |
7b63c0fa | 139 | #include "ssl_locl.h" |
ec577822 BM |
140 | #include <openssl/comp.h> |
141 | #include <openssl/evp.h> | |
142 | #include <openssl/hmac.h> | |
dbad1690 | 143 | #include <openssl/md5.h> |
58964a49 | 144 | |
61f5b6f3 BL |
145 | static void tls1_P_hash(const EVP_MD *md, const unsigned char *sec, |
146 | int sec_len, unsigned char *seed, int seed_len, | |
147 | unsigned char *out, int olen) | |
58964a49 RE |
148 | { |
149 | int chunk,n; | |
150 | unsigned int j; | |
151 | HMAC_CTX ctx; | |
152 | HMAC_CTX ctx_tmp; | |
54a656ef | 153 | unsigned char A1[EVP_MAX_MD_SIZE]; |
58964a49 RE |
154 | unsigned int A1_len; |
155 | ||
156 | chunk=EVP_MD_size(md); | |
157 | ||
dbad1690 BL |
158 | HMAC_CTX_init(&ctx); |
159 | HMAC_CTX_init(&ctx_tmp); | |
de941e28 DSH |
160 | HMAC_Init_ex(&ctx,sec,sec_len,md, NULL); |
161 | HMAC_Init_ex(&ctx_tmp,sec,sec_len,md, NULL); | |
58964a49 RE |
162 | HMAC_Update(&ctx,seed,seed_len); |
163 | HMAC_Final(&ctx,A1,&A1_len); | |
164 | ||
165 | n=0; | |
166 | for (;;) | |
167 | { | |
de941e28 DSH |
168 | HMAC_Init_ex(&ctx,NULL,0,NULL,NULL); /* re-init */ |
169 | HMAC_Init_ex(&ctx_tmp,NULL,0,NULL,NULL); /* re-init */ | |
58964a49 | 170 | HMAC_Update(&ctx,A1,A1_len); |
323f289c | 171 | HMAC_Update(&ctx_tmp,A1,A1_len); |
58964a49 RE |
172 | HMAC_Update(&ctx,seed,seed_len); |
173 | ||
174 | if (olen > chunk) | |
175 | { | |
176 | HMAC_Final(&ctx,out,&j); | |
177 | out+=j; | |
178 | olen-=j; | |
179 | HMAC_Final(&ctx_tmp,A1,&A1_len); /* calc the next A1 value */ | |
180 | } | |
181 | else /* last one */ | |
182 | { | |
183 | HMAC_Final(&ctx,A1,&A1_len); | |
184 | memcpy(out,A1,olen); | |
185 | break; | |
186 | } | |
187 | } | |
dbad1690 BL |
188 | HMAC_CTX_cleanup(&ctx); |
189 | HMAC_CTX_cleanup(&ctx_tmp); | |
4579924b | 190 | OPENSSL_cleanse(A1,sizeof(A1)); |
58964a49 RE |
191 | } |
192 | ||
81025661 | 193 | static void tls1_PRF(long digest_mask, |
61f5b6f3 BL |
194 | unsigned char *label, int label_len, |
195 | const unsigned char *sec, int slen, unsigned char *out1, | |
196 | unsigned char *out2, int olen) | |
58964a49 | 197 | { |
81025661 DSH |
198 | int len,i,idx,count; |
199 | const unsigned char *S1; | |
200 | long m; | |
201 | const EVP_MD *md; | |
202 | ||
203 | /* Count number of digests and divide sec evenly */ | |
204 | count=0; | |
205 | for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) { | |
206 | if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) count++; | |
207 | } | |
208 | len=slen/count; | |
58964a49 | 209 | S1=sec; |
81025661 DSH |
210 | memset(out1,0,olen); |
211 | for (idx=0;ssl_get_handshake_digest(idx,&m,&md);idx++) { | |
212 | if ((m<<TLS1_PRF_DGST_SHIFT) & digest_mask) { | |
213 | if (!md) { | |
214 | SSLerr(SSL_F_TLS1_PRF, | |
215 | SSL_R_UNSUPPORTED_DIGEST_TYPE); | |
216 | return; | |
217 | } | |
218 | tls1_P_hash(md ,S1,len+(slen&1),label,label_len,out2,olen); | |
219 | S1+=len; | |
220 | for (i=0; i<olen; i++) | |
221 | { | |
222 | out1[i]^=out2[i]; | |
223 | } | |
224 | } | |
58964a49 RE |
225 | } |
226 | ||
81025661 | 227 | } |
6b691a5c UM |
228 | static void tls1_generate_key_block(SSL *s, unsigned char *km, |
229 | unsigned char *tmp, int num) | |
58964a49 RE |
230 | { |
231 | unsigned char *p; | |
232 | unsigned char buf[SSL3_RANDOM_SIZE*2+ | |
233 | TLS_MD_MAX_CONST_SIZE]; | |
234 | p=buf; | |
235 | ||
236 | memcpy(p,TLS_MD_KEY_EXPANSION_CONST, | |
237 | TLS_MD_KEY_EXPANSION_CONST_SIZE); | |
238 | p+=TLS_MD_KEY_EXPANSION_CONST_SIZE; | |
239 | memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE); | |
240 | p+=SSL3_RANDOM_SIZE; | |
241 | memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); | |
242 | p+=SSL3_RANDOM_SIZE; | |
243 | ||
81025661 | 244 | tls1_PRF(s->s3->tmp.new_cipher->algorithm2,buf,(int)(p-buf), |
e4aac1cb BL |
245 | s->session->master_key,s->session->master_key_length, |
246 | km,tmp,num); | |
f9b3bff6 RL |
247 | #ifdef KSSL_DEBUG |
248 | printf("tls1_generate_key_block() ==> %d byte master_key =\n\t", | |
249 | s->session->master_key_length); | |
250 | { | |
251 | int i; | |
252 | for (i=0; i < s->session->master_key_length; i++) | |
253 | { | |
254 | printf("%02X", s->session->master_key[i]); | |
255 | } | |
256 | printf("\n"); } | |
257 | #endif /* KSSL_DEBUG */ | |
58964a49 RE |
258 | } |
259 | ||
6b691a5c | 260 | int tls1_change_cipher_state(SSL *s, int which) |
58964a49 | 261 | { |
61f5b6f3 | 262 | static const unsigned char empty[]=""; |
58964a49 RE |
263 | unsigned char *p,*key_block,*mac_secret; |
264 | unsigned char *exp_label,buf[TLS_MD_MAX_CONST_SIZE+ | |
265 | SSL3_RANDOM_SIZE*2]; | |
266 | unsigned char tmp1[EVP_MAX_KEY_LENGTH]; | |
267 | unsigned char tmp2[EVP_MAX_KEY_LENGTH]; | |
268 | unsigned char iv1[EVP_MAX_IV_LENGTH*2]; | |
269 | unsigned char iv2[EVP_MAX_IV_LENGTH*2]; | |
270 | unsigned char *ms,*key,*iv,*er1,*er2; | |
271 | int client_write; | |
272 | EVP_CIPHER_CTX *dd; | |
e778802f | 273 | const EVP_CIPHER *c; |
09b6c2ef | 274 | #ifndef OPENSSL_NO_COMP |
e778802f | 275 | const SSL_COMP *comp; |
09b6c2ef | 276 | #endif |
e778802f | 277 | const EVP_MD *m; |
b948e2c5 DSH |
278 | int mac_type; |
279 | int *mac_secret_size; | |
280 | EVP_MD_CTX *mac_ctx; | |
281 | EVP_PKEY *mac_key; | |
28797374 BM |
282 | int is_export,n,i,j,k,exp_label_len,cl; |
283 | int reuse_dd = 0; | |
58964a49 | 284 | |
28797374 | 285 | is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher); |
58964a49 RE |
286 | c=s->s3->tmp.new_sym_enc; |
287 | m=s->s3->tmp.new_hash; | |
b948e2c5 | 288 | mac_type = s->s3->tmp.new_mac_pkey_type; |
09b6c2ef | 289 | #ifndef OPENSSL_NO_COMP |
58964a49 | 290 | comp=s->s3->tmp.new_compression; |
09b6c2ef | 291 | #endif |
58964a49 RE |
292 | key_block=s->s3->tmp.key_block; |
293 | ||
f9b3bff6 RL |
294 | #ifdef KSSL_DEBUG |
295 | printf("tls1_change_cipher_state(which= %d) w/\n", which); | |
52b8dad8 BM |
296 | printf("\talg= %ld/%ld, comp= %p\n", |
297 | s->s3->tmp.new_cipher->algorithm_mkey, | |
298 | s->s3->tmp.new_cipher->algorithm_auth, | |
299 | comp); | |
f9b3bff6 RL |
300 | printf("\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c); |
301 | printf("\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n", | |
302 | c->nid,c->block_size,c->key_len,c->iv_len); | |
303 | printf("\tkey_block: len= %d, data= ", s->s3->tmp.key_block_length); | |
304 | { | |
305 | int i; | |
306 | for (i=0; i<s->s3->tmp.key_block_length; i++) | |
307 | printf("%02x", key_block[i]); printf("\n"); | |
308 | } | |
309 | #endif /* KSSL_DEBUG */ | |
310 | ||
58964a49 RE |
311 | if (which & SSL3_CC_READ) |
312 | { | |
b948e2c5 DSH |
313 | if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) |
314 | s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM; | |
315 | else | |
316 | s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM; | |
317 | ||
28797374 BM |
318 | if (s->enc_read_ctx != NULL) |
319 | reuse_dd = 1; | |
320 | else if ((s->enc_read_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL) | |
58964a49 | 321 | goto err; |
cc684e33 NL |
322 | else |
323 | /* make sure it's intialized in case we exit later with an error */ | |
324 | EVP_CIPHER_CTX_init(s->enc_read_ctx); | |
58964a49 | 325 | dd= s->enc_read_ctx; |
b948e2c5 | 326 | mac_ctx=ssl_replace_hash(&s->read_hash,NULL); |
09b6c2ef | 327 | #ifndef OPENSSL_NO_COMP |
dfeab068 RE |
328 | if (s->expand != NULL) |
329 | { | |
330 | COMP_CTX_free(s->expand); | |
331 | s->expand=NULL; | |
332 | } | |
333 | if (comp != NULL) | |
334 | { | |
413c4f45 | 335 | s->expand=COMP_CTX_new(comp->method); |
dfeab068 RE |
336 | if (s->expand == NULL) |
337 | { | |
338 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR); | |
339 | goto err2; | |
340 | } | |
413c4f45 MC |
341 | if (s->s3->rrec.comp == NULL) |
342 | s->s3->rrec.comp=(unsigned char *) | |
26a3a48d | 343 | OPENSSL_malloc(SSL3_RT_MAX_ENCRYPTED_LENGTH); |
dfeab068 RE |
344 | if (s->s3->rrec.comp == NULL) |
345 | goto err; | |
346 | } | |
09b6c2ef | 347 | #endif |
36d16f8e BL |
348 | /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */ |
349 | if (s->version != DTLS1_VERSION) | |
350 | memset(&(s->s3->read_sequence[0]),0,8); | |
58964a49 | 351 | mac_secret= &(s->s3->read_mac_secret[0]); |
b948e2c5 | 352 | mac_secret_size=&(s->s3->read_mac_secret_size); |
58964a49 RE |
353 | } |
354 | else | |
355 | { | |
b948e2c5 DSH |
356 | if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) |
357 | s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM; | |
358 | else | |
359 | s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM; | |
28797374 BM |
360 | if (s->enc_write_ctx != NULL) |
361 | reuse_dd = 1; | |
362 | else if ((s->enc_write_ctx=OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL) | |
363 | goto err; | |
cc684e33 NL |
364 | else |
365 | /* make sure it's intialized in case we exit later with an error */ | |
366 | EVP_CIPHER_CTX_init(s->enc_write_ctx); | |
58964a49 | 367 | dd= s->enc_write_ctx; |
b948e2c5 | 368 | mac_ctx = ssl_replace_hash(&s->write_hash,NULL); |
09b6c2ef | 369 | #ifndef OPENSSL_NO_COMP |
dfeab068 RE |
370 | if (s->compress != NULL) |
371 | { | |
372 | COMP_CTX_free(s->compress); | |
373 | s->compress=NULL; | |
374 | } | |
375 | if (comp != NULL) | |
376 | { | |
413c4f45 | 377 | s->compress=COMP_CTX_new(comp->method); |
dfeab068 RE |
378 | if (s->compress == NULL) |
379 | { | |
380 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,SSL_R_COMPRESSION_LIBRARY_ERROR); | |
381 | goto err2; | |
382 | } | |
383 | } | |
09b6c2ef | 384 | #endif |
36d16f8e BL |
385 | /* this is done by dtls1_reset_seq_numbers for DTLS1_VERSION */ |
386 | if (s->version != DTLS1_VERSION) | |
387 | memset(&(s->s3->write_sequence[0]),0,8); | |
58964a49 | 388 | mac_secret= &(s->s3->write_mac_secret[0]); |
b948e2c5 | 389 | mac_secret_size = &(s->s3->write_mac_secret_size); |
58964a49 RE |
390 | } |
391 | ||
28797374 BM |
392 | if (reuse_dd) |
393 | EVP_CIPHER_CTX_cleanup(dd); | |
58964a49 RE |
394 | |
395 | p=s->s3->tmp.key_block; | |
b948e2c5 DSH |
396 | i=*mac_secret_size=s->s3->tmp.new_mac_secret_size; |
397 | ||
436d318c | 398 | cl=EVP_CIPHER_key_length(c); |
28797374 BM |
399 | j=is_export ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ? |
400 | cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl; | |
436d318c | 401 | /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */ |
58964a49 RE |
402 | k=EVP_CIPHER_iv_length(c); |
403 | er1= &(s->s3->client_random[0]); | |
404 | er2= &(s->s3->server_random[0]); | |
405 | if ( (which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || | |
406 | (which == SSL3_CHANGE_CIPHER_SERVER_READ)) | |
407 | { | |
408 | ms= &(p[ 0]); n=i+i; | |
409 | key= &(p[ n]); n+=j+j; | |
410 | iv= &(p[ n]); n+=k+k; | |
411 | exp_label=(unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST; | |
412 | exp_label_len=TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE; | |
413 | client_write=1; | |
414 | } | |
415 | else | |
416 | { | |
417 | n=i; | |
418 | ms= &(p[ n]); n+=i+j; | |
419 | key= &(p[ n]); n+=j+k; | |
420 | iv= &(p[ n]); n+=k; | |
421 | exp_label=(unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST; | |
422 | exp_label_len=TLS_MD_SERVER_WRITE_KEY_CONST_SIZE; | |
423 | client_write=0; | |
424 | } | |
425 | ||
426 | if (n > s->s3->tmp.key_block_length) | |
427 | { | |
5277d7cb | 428 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_INTERNAL_ERROR); |
58964a49 RE |
429 | goto err2; |
430 | } | |
431 | ||
432 | memcpy(mac_secret,ms,i); | |
b948e2c5 DSH |
433 | mac_key = EVP_PKEY_new_mac_key(mac_type, NULL, |
434 | mac_secret,*mac_secret_size); | |
435 | EVP_DigestSignInit(mac_ctx,NULL,m,NULL,mac_key); | |
436 | EVP_PKEY_free(mac_key); | |
58964a49 RE |
437 | #ifdef TLS_DEBUG |
438 | printf("which = %04X\nmac key=",which); | |
439 | { int z; for (z=0; z<i; z++) printf("%02X%c",ms[z],((z+1)%16)?' ':'\n'); } | |
440 | #endif | |
28797374 | 441 | if (is_export) |
58964a49 RE |
442 | { |
443 | /* In here I set both the read and write key/iv to the | |
444 | * same value since only the correct one will be used :-). | |
445 | */ | |
446 | p=buf; | |
447 | memcpy(p,exp_label,exp_label_len); | |
448 | p+=exp_label_len; | |
449 | memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); | |
450 | p+=SSL3_RANDOM_SIZE; | |
451 | memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE); | |
452 | p+=SSL3_RANDOM_SIZE; | |
81025661 | 453 | tls1_PRF(s->s3->tmp.new_cipher->algorithm2,buf,(int)(p-buf),key,j, |
06ab81f9 | 454 | tmp1,tmp2,EVP_CIPHER_key_length(c)); |
58964a49 RE |
455 | key=tmp1; |
456 | ||
457 | if (k > 0) | |
458 | { | |
459 | p=buf; | |
460 | memcpy(p,TLS_MD_IV_BLOCK_CONST, | |
461 | TLS_MD_IV_BLOCK_CONST_SIZE); | |
462 | p+=TLS_MD_IV_BLOCK_CONST_SIZE; | |
463 | memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); | |
464 | p+=SSL3_RANDOM_SIZE; | |
465 | memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE); | |
466 | p+=SSL3_RANDOM_SIZE; | |
81025661 | 467 | tls1_PRF(s->s3->tmp.new_cipher->algorithm2,buf,p-buf,empty,0, |
61f5b6f3 | 468 | iv1,iv2,k*2); |
58964a49 RE |
469 | if (client_write) |
470 | iv=iv1; | |
471 | else | |
472 | iv= &(iv1[k]); | |
473 | } | |
474 | } | |
475 | ||
476 | s->session->key_arg_length=0; | |
f9b3bff6 RL |
477 | #ifdef KSSL_DEBUG |
478 | { | |
479 | int i; | |
581f1c84 | 480 | printf("EVP_CipherInit_ex(dd,c,key=,iv=,which)\n"); |
f9b3bff6 RL |
481 | printf("\tkey= "); for (i=0; i<c->key_len; i++) printf("%02x", key[i]); |
482 | printf("\n"); | |
483 | printf("\t iv= "); for (i=0; i<c->iv_len; i++) printf("%02x", iv[i]); | |
484 | printf("\n"); | |
485 | } | |
486 | #endif /* KSSL_DEBUG */ | |
58964a49 | 487 | |
581f1c84 | 488 | EVP_CipherInit_ex(dd,c,NULL,key,iv,(which & SSL3_CC_WRITE)); |
58964a49 RE |
489 | #ifdef TLS_DEBUG |
490 | printf("which = %04X\nkey=",which); | |
491 | { int z; for (z=0; z<EVP_CIPHER_key_length(c); z++) printf("%02X%c",key[z],((z+1)%16)?' ':'\n'); } | |
492 | printf("\niv="); | |
493 | { int z; for (z=0; z<k; z++) printf("%02X%c",iv[z],((z+1)%16)?' ':'\n'); } | |
494 | printf("\n"); | |
495 | #endif | |
496 | ||
4579924b RL |
497 | OPENSSL_cleanse(tmp1,sizeof(tmp1)); |
498 | OPENSSL_cleanse(tmp2,sizeof(tmp1)); | |
499 | OPENSSL_cleanse(iv1,sizeof(iv1)); | |
500 | OPENSSL_cleanse(iv2,sizeof(iv2)); | |
58964a49 RE |
501 | return(1); |
502 | err: | |
503 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE,ERR_R_MALLOC_FAILURE); | |
504 | err2: | |
505 | return(0); | |
506 | } | |
507 | ||
6b691a5c | 508 | int tls1_setup_key_block(SSL *s) |
58964a49 RE |
509 | { |
510 | unsigned char *p1,*p2; | |
e778802f BL |
511 | const EVP_CIPHER *c; |
512 | const EVP_MD *hash; | |
06ab81f9 | 513 | int num; |
413c4f45 | 514 | SSL_COMP *comp; |
b948e2c5 | 515 | int mac_type= NID_undef,mac_secret_size=0; |
58964a49 | 516 | |
f9b3bff6 RL |
517 | #ifdef KSSL_DEBUG |
518 | printf ("tls1_setup_key_block()\n"); | |
519 | #endif /* KSSL_DEBUG */ | |
520 | ||
58964a49 RE |
521 | if (s->s3->tmp.key_block_length != 0) |
522 | return(1); | |
523 | ||
b948e2c5 | 524 | if (!ssl_cipher_get_evp(s->session,&c,&hash,&mac_type,&mac_secret_size,&comp)) |
58964a49 RE |
525 | { |
526 | SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,SSL_R_CIPHER_OR_HASH_UNAVAILABLE); | |
527 | return(0); | |
528 | } | |
529 | ||
530 | s->s3->tmp.new_sym_enc=c; | |
531 | s->s3->tmp.new_hash=hash; | |
b948e2c5 DSH |
532 | s->s3->tmp.new_mac_pkey_type = mac_type; |
533 | s->s3->tmp.new_mac_secret_size = mac_secret_size; | |
534 | num=EVP_CIPHER_key_length(c)+mac_secret_size+EVP_CIPHER_iv_length(c); | |
58964a49 RE |
535 | num*=2; |
536 | ||
537 | ssl3_cleanup_key_block(s); | |
538 | ||
26a3a48d | 539 | if ((p1=(unsigned char *)OPENSSL_malloc(num)) == NULL) |
58964a49 | 540 | goto err; |
26a3a48d | 541 | if ((p2=(unsigned char *)OPENSSL_malloc(num)) == NULL) |
58964a49 RE |
542 | goto err; |
543 | ||
544 | s->s3->tmp.key_block_length=num; | |
545 | s->s3->tmp.key_block=p1; | |
546 | ||
547 | ||
548 | #ifdef TLS_DEBUG | |
549 | printf("client random\n"); | |
550 | { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->client_random[z],((z+1)%16)?' ':'\n'); } | |
551 | printf("server random\n"); | |
552 | { int z; for (z=0; z<SSL3_RANDOM_SIZE; z++) printf("%02X%c",s->s3->server_random[z],((z+1)%16)?' ':'\n'); } | |
553 | printf("pre-master\n"); | |
554 | { int z; for (z=0; z<s->session->master_key_length; z++) printf("%02X%c",s->session->master_key[z],((z+1)%16)?' ':'\n'); } | |
555 | #endif | |
556 | tls1_generate_key_block(s,p1,p2,num); | |
4579924b | 557 | OPENSSL_cleanse(p2,num); |
26a3a48d | 558 | OPENSSL_free(p2); |
58964a49 RE |
559 | #ifdef TLS_DEBUG |
560 | printf("\nkey block\n"); | |
561 | { int z; for (z=0; z<num; z++) printf("%02X%c",p1[z],((z+1)%16)?' ':'\n'); } | |
562 | #endif | |
563 | ||
c21506ba BM |
564 | if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) |
565 | { | |
566 | /* enable vulnerability countermeasure for CBC ciphers with | |
567 | * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt) | |
568 | */ | |
569 | s->s3->need_empty_fragments = 1; | |
570 | ||
d1d0be3c BM |
571 | if (s->session->cipher != NULL) |
572 | { | |
52b8dad8 | 573 | if (s->session->cipher->algorithm_enc == SSL_eNULL) |
d1d0be3c BM |
574 | s->s3->need_empty_fragments = 0; |
575 | ||
576 | #ifndef OPENSSL_NO_RC4 | |
52b8dad8 | 577 | if (s->session->cipher->algorithm_enc == SSL_RC4) |
d1d0be3c | 578 | s->s3->need_empty_fragments = 0; |
82b0bf0b | 579 | #endif |
d1d0be3c | 580 | } |
c21506ba | 581 | } |
82b0bf0b | 582 | |
58964a49 RE |
583 | return(1); |
584 | err: | |
585 | SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK,ERR_R_MALLOC_FAILURE); | |
586 | return(0); | |
587 | } | |
588 | ||
6b691a5c | 589 | int tls1_enc(SSL *s, int send) |
58964a49 RE |
590 | { |
591 | SSL3_RECORD *rec; | |
592 | EVP_CIPHER_CTX *ds; | |
593 | unsigned long l; | |
594 | int bs,i,ii,j,k,n=0; | |
e778802f | 595 | const EVP_CIPHER *enc; |
58964a49 RE |
596 | |
597 | if (send) | |
598 | { | |
b948e2c5 DSH |
599 | if (EVP_MD_CTX_md(s->write_hash)) |
600 | n=EVP_MD_CTX_size(s->write_hash); | |
58964a49 RE |
601 | ds=s->enc_write_ctx; |
602 | rec= &(s->s3->wrec); | |
603 | if (s->enc_write_ctx == NULL) | |
dfeab068 | 604 | enc=NULL; |
58964a49 | 605 | else |
58964a49 | 606 | enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx); |
58964a49 RE |
607 | } |
608 | else | |
609 | { | |
b948e2c5 DSH |
610 | if (EVP_MD_CTX_md(s->read_hash)) |
611 | n=EVP_MD_CTX_size(s->read_hash); | |
58964a49 RE |
612 | ds=s->enc_read_ctx; |
613 | rec= &(s->s3->rrec); | |
614 | if (s->enc_read_ctx == NULL) | |
dfeab068 | 615 | enc=NULL; |
58964a49 | 616 | else |
58964a49 | 617 | enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx); |
58964a49 RE |
618 | } |
619 | ||
f9b3bff6 RL |
620 | #ifdef KSSL_DEBUG |
621 | printf("tls1_enc(%d)\n", send); | |
622 | #endif /* KSSL_DEBUG */ | |
623 | ||
58964a49 | 624 | if ((s->session == NULL) || (ds == NULL) || |
dfeab068 | 625 | (enc == NULL)) |
58964a49 | 626 | { |
44e48abc | 627 | memmove(rec->data,rec->input,rec->length); |
58964a49 RE |
628 | rec->input=rec->data; |
629 | } | |
630 | else | |
631 | { | |
632 | l=rec->length; | |
633 | bs=EVP_CIPHER_block_size(ds->cipher); | |
634 | ||
635 | if ((bs != 1) && send) | |
636 | { | |
637 | i=bs-((int)l%bs); | |
638 | ||
639 | /* Add weird padding of upto 256 bytes */ | |
640 | ||
641 | /* we need to add 'i' padding bytes of value j */ | |
642 | j=i-1; | |
643 | if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG) | |
644 | { | |
645 | if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG) | |
646 | j++; | |
647 | } | |
648 | for (k=(int)l; k<(int)(l+i); k++) | |
649 | rec->input[k]=j; | |
650 | l+=i; | |
651 | rec->length+=i; | |
652 | } | |
653 | ||
f9b3bff6 RL |
654 | #ifdef KSSL_DEBUG |
655 | { | |
45442167 | 656 | unsigned long ui; |
f9b3bff6 RL |
657 | printf("EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n", |
658 | ds,rec->data,rec->input,l); | |
659 | printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%d %d], %d iv_len\n", | |
660 | ds->buf_len, ds->cipher->key_len, | |
661 | DES_KEY_SZ, DES_SCHEDULE_SZ, | |
662 | ds->cipher->iv_len); | |
663 | printf("\t\tIV: "); | |
664 | for (i=0; i<ds->cipher->iv_len; i++) printf("%02X", ds->iv[i]); | |
665 | printf("\n"); | |
666 | printf("\trec->input="); | |
45442167 | 667 | for (ui=0; ui<l; ui++) printf(" %02x", rec->input[ui]); |
f9b3bff6 RL |
668 | printf("\n"); |
669 | } | |
670 | #endif /* KSSL_DEBUG */ | |
671 | ||
285b4275 BM |
672 | if (!send) |
673 | { | |
674 | if (l == 0 || l%bs != 0) | |
675 | { | |
676 | SSLerr(SSL_F_TLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG); | |
ee60d9fb BM |
677 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED); |
678 | return 0; | |
285b4275 BM |
679 | } |
680 | } | |
681 | ||
58964a49 RE |
682 | EVP_Cipher(ds,rec->data,rec->input,l); |
683 | ||
f9b3bff6 RL |
684 | #ifdef KSSL_DEBUG |
685 | { | |
686 | unsigned long i; | |
687 | printf("\trec->data="); | |
688 | for (i=0; i<l; i++) | |
689 | printf(" %02x", rec->data[i]); printf("\n"); | |
690 | } | |
691 | #endif /* KSSL_DEBUG */ | |
692 | ||
58964a49 RE |
693 | if ((bs != 1) && !send) |
694 | { | |
285b4275 | 695 | ii=i=rec->data[l-1]; /* padding_length */ |
58964a49 | 696 | i++; |
5cda6c45 DSH |
697 | /* NB: if compression is in operation the first packet |
698 | * may not be of even length so the padding bug check | |
699 | * cannot be performed. This bug workaround has been | |
700 | * around since SSLeay so hopefully it is either fixed | |
701 | * now or no buggy implementation supports compression | |
702 | * [steve] | |
703 | */ | |
704 | if ( (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG) | |
705 | && !s->expand) | |
58964a49 RE |
706 | { |
707 | /* First packet is even in size, so check */ | |
708 | if ((memcmp(s->s3->read_sequence, | |
709 | "\0\0\0\0\0\0\0\0",8) == 0) && !(ii & 1)) | |
710 | s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG; | |
711 | if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG) | |
712 | i--; | |
713 | } | |
285b4275 BM |
714 | /* TLS 1.0 does not bound the number of padding bytes by the block size. |
715 | * All of them must have value 'padding_length'. */ | |
58964a49 RE |
716 | if (i > (int)rec->length) |
717 | { | |
ee60d9fb BM |
718 | /* Incorrect padding. SSLerr() and ssl3_alert are done |
719 | * by caller: we don't want to reveal whether this is | |
965b6dad BM |
720 | * a decryption error or a MAC verification failure |
721 | * (see http://www.openssl.org/~bodo/tls-cbc.txt) */ | |
ee60d9fb | 722 | return -1; |
58964a49 RE |
723 | } |
724 | for (j=(int)(l-i); j<(int)l; j++) | |
725 | { | |
726 | if (rec->data[j] != ii) | |
727 | { | |
ee60d9fb BM |
728 | /* Incorrect padding */ |
729 | return -1; | |
58964a49 RE |
730 | } |
731 | } | |
732 | rec->length-=i; | |
733 | } | |
734 | } | |
735 | return(1); | |
736 | } | |
81025661 | 737 | int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *out) |
58964a49 RE |
738 | { |
739 | unsigned int ret; | |
81025661 DSH |
740 | EVP_MD_CTX ctx, *d=NULL; |
741 | int i; | |
742 | ||
743 | if (s->s3->handshake_buffer) | |
744 | ssl3_digest_cached_records(s); | |
745 | for (i=0;i<SSL_MAX_DIGEST;i++) | |
746 | { | |
747 | if (s->s3->handshake_dgst[i]&&EVP_MD_CTX_type(s->s3->handshake_dgst[i])==md_nid) | |
748 | { | |
749 | d=s->s3->handshake_dgst[i]; | |
750 | break; | |
751 | } | |
752 | } | |
753 | if (!d) { | |
754 | SSLerr(SSL_F_TLS1_CERT_VERIFY_MAC,SSL_R_NO_REQUIRED_DIGEST); | |
755 | return 0; | |
756 | } | |
58964a49 | 757 | |
dbad1690 | 758 | EVP_MD_CTX_init(&ctx); |
81025661 | 759 | EVP_MD_CTX_copy_ex(&ctx,d); |
20d2186c | 760 | EVP_DigestFinal_ex(&ctx,out,&ret); |
dbad1690 | 761 | EVP_MD_CTX_cleanup(&ctx); |
58964a49 RE |
762 | return((int)ret); |
763 | } | |
764 | ||
81025661 | 765 | int tls1_final_finish_mac(SSL *s, |
245206ea | 766 | const char *str, int slen, unsigned char *out) |
58964a49 RE |
767 | { |
768 | unsigned int i; | |
769 | EVP_MD_CTX ctx; | |
770 | unsigned char buf[TLS_MD_MAX_CONST_SIZE+MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; | |
771 | unsigned char *q,buf2[12]; | |
81025661 DSH |
772 | int idx; |
773 | long mask; | |
774 | const EVP_MD *md; | |
58964a49 RE |
775 | |
776 | q=buf; | |
777 | memcpy(q,str,slen); | |
778 | q+=slen; | |
779 | ||
dbad1690 | 780 | EVP_MD_CTX_init(&ctx); |
81025661 DSH |
781 | |
782 | if (s->s3->handshake_buffer) | |
783 | ssl3_digest_cached_records(s); | |
784 | ||
785 | for (idx=0;ssl_get_handshake_digest(idx,&mask,&md);idx++) { | |
786 | if (mask & s->s3->tmp.new_cipher->algorithm2) { | |
787 | EVP_MD_CTX_copy_ex(&ctx,s->s3->handshake_dgst[idx]); | |
788 | EVP_DigestFinal_ex(&ctx,q,&i); | |
789 | q+=i; | |
790 | } | |
791 | } | |
792 | ||
793 | tls1_PRF(s->s3->tmp.new_cipher->algorithm2,buf,(int)(q-buf), | |
58964a49 | 794 | s->session->master_key,s->session->master_key_length, |
54a656ef | 795 | out,buf2,sizeof buf2); |
dbad1690 | 796 | EVP_MD_CTX_cleanup(&ctx); |
58964a49 | 797 | |
54a656ef | 798 | return sizeof buf2; |
58964a49 RE |
799 | } |
800 | ||
6b691a5c | 801 | int tls1_mac(SSL *ssl, unsigned char *md, int send) |
58964a49 RE |
802 | { |
803 | SSL3_RECORD *rec; | |
804 | unsigned char *mac_sec,*seq; | |
b948e2c5 DSH |
805 | EVP_MD_CTX *hash; |
806 | size_t md_size; | |
58964a49 | 807 | int i; |
b948e2c5 | 808 | EVP_MD_CTX hmac, *mac_ctx; |
58964a49 | 809 | unsigned char buf[5]; |
b948e2c5 | 810 | int stream_mac = (send?(ssl->mac_flags & SSL_MAC_FLAG_WRITE_MAC_STREAM):(ssl->mac_flags&SSL_MAC_FLAG_READ_MAC_STREAM)); |
58964a49 RE |
811 | if (send) |
812 | { | |
813 | rec= &(ssl->s3->wrec); | |
814 | mac_sec= &(ssl->s3->write_mac_secret[0]); | |
815 | seq= &(ssl->s3->write_sequence[0]); | |
816 | hash=ssl->write_hash; | |
817 | } | |
818 | else | |
819 | { | |
820 | rec= &(ssl->s3->rrec); | |
821 | mac_sec= &(ssl->s3->read_mac_secret[0]); | |
822 | seq= &(ssl->s3->read_sequence[0]); | |
823 | hash=ssl->read_hash; | |
824 | } | |
825 | ||
b948e2c5 | 826 | md_size=EVP_MD_CTX_size(hash); |
58964a49 RE |
827 | |
828 | buf[0]=rec->type; | |
829 | buf[1]=TLS1_VERSION_MAJOR; | |
830 | buf[2]=TLS1_VERSION_MINOR; | |
831 | buf[3]=rec->length>>8; | |
832 | buf[4]=rec->length&0xff; | |
833 | ||
834 | /* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */ | |
b948e2c5 DSH |
835 | if (stream_mac) |
836 | { | |
837 | mac_ctx = hash; | |
838 | } | |
839 | else | |
840 | { | |
841 | EVP_MD_CTX_copy(&hmac,hash); | |
842 | mac_ctx = &hmac; | |
843 | } | |
844 | EVP_DigestSignUpdate(mac_ctx,seq,8); | |
845 | EVP_DigestSignUpdate(mac_ctx,buf,5); | |
846 | EVP_DigestSignUpdate(mac_ctx,rec->input,rec->length); | |
847 | if (stream_mac) EVP_MD_CTX_copy(&hmac,hash); | |
848 | EVP_DigestSignFinal(&hmac,md,&md_size); | |
849 | EVP_MD_CTX_cleanup(&hmac); | |
58964a49 RE |
850 | #ifdef TLS_DEBUG |
851 | printf("sec="); | |
dfeab068 | 852 | {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",mac_sec[z]); printf("\n"); } |
58964a49 RE |
853 | printf("seq="); |
854 | {int z; for (z=0; z<8; z++) printf("%02X ",seq[z]); printf("\n"); } | |
855 | printf("buf="); | |
856 | {int z; for (z=0; z<5; z++) printf("%02X ",buf[z]); printf("\n"); } | |
857 | printf("rec="); | |
dfeab068 | 858 | {unsigned int z; for (z=0; z<rec->length; z++) printf("%02X ",buf[z]); printf("\n"); } |
58964a49 RE |
859 | #endif |
860 | ||
36d16f8e BL |
861 | if ( SSL_version(ssl) != DTLS1_VERSION) |
862 | { | |
863 | for (i=7; i>=0; i--) | |
864 | { | |
865 | ++seq[i]; | |
866 | if (seq[i] != 0) break; | |
867 | } | |
1876cc32 | 868 | } |
58964a49 RE |
869 | |
870 | #ifdef TLS_DEBUG | |
dfeab068 | 871 | {unsigned int z; for (z=0; z<md_size; z++) printf("%02X ",md[z]); printf("\n"); } |
58964a49 RE |
872 | #endif |
873 | return(md_size); | |
874 | } | |
875 | ||
6b691a5c UM |
876 | int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, |
877 | int len) | |
58964a49 RE |
878 | { |
879 | unsigned char buf[SSL3_RANDOM_SIZE*2+TLS_MD_MASTER_SECRET_CONST_SIZE]; | |
880 | unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH]; | |
881 | ||
f9b3bff6 RL |
882 | #ifdef KSSL_DEBUG |
883 | printf ("tls1_generate_master_secret(%p,%p, %p, %d)\n", s,out, p,len); | |
884 | #endif /* KSSL_DEBUG */ | |
885 | ||
58964a49 RE |
886 | /* Setup the stuff to munge */ |
887 | memcpy(buf,TLS_MD_MASTER_SECRET_CONST, | |
888 | TLS_MD_MASTER_SECRET_CONST_SIZE); | |
889 | memcpy(&(buf[TLS_MD_MASTER_SECRET_CONST_SIZE]), | |
890 | s->s3->client_random,SSL3_RANDOM_SIZE); | |
891 | memcpy(&(buf[SSL3_RANDOM_SIZE+TLS_MD_MASTER_SECRET_CONST_SIZE]), | |
892 | s->s3->server_random,SSL3_RANDOM_SIZE); | |
81025661 | 893 | tls1_PRF(s->s3->tmp.new_cipher->algorithm2, |
58964a49 | 894 | buf,TLS_MD_MASTER_SECRET_CONST_SIZE+SSL3_RANDOM_SIZE*2,p,len, |
54a656ef | 895 | s->session->master_key,buff,sizeof buff); |
f9b3bff6 RL |
896 | #ifdef KSSL_DEBUG |
897 | printf ("tls1_generate_master_secret() complete\n"); | |
898 | #endif /* KSSL_DEBUG */ | |
58964a49 RE |
899 | return(SSL3_MASTER_SECRET_SIZE); |
900 | } | |
901 | ||
6b691a5c | 902 | int tls1_alert_code(int code) |
58964a49 RE |
903 | { |
904 | switch (code) | |
905 | { | |
906 | case SSL_AD_CLOSE_NOTIFY: return(SSL3_AD_CLOSE_NOTIFY); | |
907 | case SSL_AD_UNEXPECTED_MESSAGE: return(SSL3_AD_UNEXPECTED_MESSAGE); | |
908 | case SSL_AD_BAD_RECORD_MAC: return(SSL3_AD_BAD_RECORD_MAC); | |
909 | case SSL_AD_DECRYPTION_FAILED: return(TLS1_AD_DECRYPTION_FAILED); | |
910 | case SSL_AD_RECORD_OVERFLOW: return(TLS1_AD_RECORD_OVERFLOW); | |
911 | case SSL_AD_DECOMPRESSION_FAILURE:return(SSL3_AD_DECOMPRESSION_FAILURE); | |
912 | case SSL_AD_HANDSHAKE_FAILURE: return(SSL3_AD_HANDSHAKE_FAILURE); | |
913 | case SSL_AD_NO_CERTIFICATE: return(-1); | |
914 | case SSL_AD_BAD_CERTIFICATE: return(SSL3_AD_BAD_CERTIFICATE); | |
915 | case SSL_AD_UNSUPPORTED_CERTIFICATE:return(SSL3_AD_UNSUPPORTED_CERTIFICATE); | |
916 | case SSL_AD_CERTIFICATE_REVOKED:return(SSL3_AD_CERTIFICATE_REVOKED); | |
917 | case SSL_AD_CERTIFICATE_EXPIRED:return(SSL3_AD_CERTIFICATE_EXPIRED); | |
918 | case SSL_AD_CERTIFICATE_UNKNOWN:return(SSL3_AD_CERTIFICATE_UNKNOWN); | |
919 | case SSL_AD_ILLEGAL_PARAMETER: return(SSL3_AD_ILLEGAL_PARAMETER); | |
920 | case SSL_AD_UNKNOWN_CA: return(TLS1_AD_UNKNOWN_CA); | |
921 | case SSL_AD_ACCESS_DENIED: return(TLS1_AD_ACCESS_DENIED); | |
922 | case SSL_AD_DECODE_ERROR: return(TLS1_AD_DECODE_ERROR); | |
923 | case SSL_AD_DECRYPT_ERROR: return(TLS1_AD_DECRYPT_ERROR); | |
657e60fa | 924 | case SSL_AD_EXPORT_RESTRICTION: return(TLS1_AD_EXPORT_RESTRICTION); |
58964a49 RE |
925 | case SSL_AD_PROTOCOL_VERSION: return(TLS1_AD_PROTOCOL_VERSION); |
926 | case SSL_AD_INSUFFICIENT_SECURITY:return(TLS1_AD_INSUFFICIENT_SECURITY); | |
927 | case SSL_AD_INTERNAL_ERROR: return(TLS1_AD_INTERNAL_ERROR); | |
657e60fa | 928 | case SSL_AD_USER_CANCELLED: return(TLS1_AD_USER_CANCELLED); |
58964a49 | 929 | case SSL_AD_NO_RENEGOTIATION: return(TLS1_AD_NO_RENEGOTIATION); |
d32f888d BM |
930 | case SSL_AD_UNSUPPORTED_EXTENSION: return(TLS1_AD_UNSUPPORTED_EXTENSION); |
931 | case SSL_AD_CERTIFICATE_UNOBTAINABLE: return(TLS1_AD_CERTIFICATE_UNOBTAINABLE); | |
f7914dbf | 932 | case SSL_AD_UNRECOGNIZED_NAME: return(TLS1_AD_UNRECOGNIZED_NAME); |
d32f888d BM |
933 | case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE); |
934 | case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(TLS1_AD_BAD_CERTIFICATE_HASH_VALUE); | |
ddac1974 | 935 | case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY); |
01c76c66 | 936 | #if 0 /* not appropriate for TLS, not used for DTLS */ |
36d16f8e BL |
937 | case DTLS1_AD_MISSING_HANDSHAKE_MESSAGE: return |
938 | (DTLS1_AD_MISSING_HANDSHAKE_MESSAGE); | |
01c76c66 | 939 | #endif |
58964a49 RE |
940 | default: return(-1); |
941 | } | |
942 | } | |
943 |