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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. | |
0f113f3e | 8 | * |
58964a49 RE |
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). | |
0f113f3e | 15 | * |
58964a49 RE |
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. | |
0f113f3e | 22 | * |
58964a49 RE |
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 :-). | |
0f113f3e | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
58964a49 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 40 | * |
58964a49 RE |
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. | |
0f113f3e | 52 | * |
58964a49 RE |
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 | |
0f113f3e | 66 | * notice, this list of conditions and the following disclaimer. |
82b0bf0b BM |
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" |
fceac0bc | 140 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 141 | # include <openssl/comp.h> |
fceac0bc | 142 | #endif |
ec577822 BM |
143 | #include <openssl/evp.h> |
144 | #include <openssl/hmac.h> | |
dbad1690 | 145 | #include <openssl/md5.h> |
637f374a | 146 | #include <openssl/rand.h> |
0e1dba93 | 147 | #ifdef KSSL_DEBUG |
0f113f3e | 148 | # include <openssl/des.h> |
0e1dba93 | 149 | #endif |
58964a49 | 150 | |
761772d7 | 151 | /* seed1 through seed5 are virtually concatenated */ |
7837c7ec | 152 | static int tls1_P_hash(const EVP_MD *md, const unsigned char *sec, |
0f113f3e MC |
153 | int sec_len, |
154 | const void *seed1, int seed1_len, | |
155 | const void *seed2, int seed2_len, | |
156 | const void *seed3, int seed3_len, | |
157 | const void *seed4, int seed4_len, | |
158 | const void *seed5, int seed5_len, | |
159 | unsigned char *out, int olen) | |
160 | { | |
161 | int chunk; | |
162 | size_t j; | |
163 | EVP_MD_CTX ctx, ctx_tmp, ctx_init; | |
164 | EVP_PKEY *mac_key; | |
165 | unsigned char A1[EVP_MAX_MD_SIZE]; | |
166 | size_t A1_len; | |
167 | int ret = 0; | |
168 | ||
169 | chunk = EVP_MD_size(md); | |
170 | OPENSSL_assert(chunk >= 0); | |
171 | ||
172 | EVP_MD_CTX_init(&ctx); | |
173 | EVP_MD_CTX_init(&ctx_tmp); | |
174 | EVP_MD_CTX_init(&ctx_init); | |
175 | EVP_MD_CTX_set_flags(&ctx_init, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); | |
176 | mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len); | |
177 | if (!mac_key) | |
178 | goto err; | |
179 | if (!EVP_DigestSignInit(&ctx_init, NULL, md, NULL, mac_key)) | |
180 | goto err; | |
181 | if (!EVP_MD_CTX_copy_ex(&ctx, &ctx_init)) | |
182 | goto err; | |
183 | if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len)) | |
184 | goto err; | |
185 | if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len)) | |
186 | goto err; | |
187 | if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len)) | |
188 | goto err; | |
189 | if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len)) | |
190 | goto err; | |
191 | if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len)) | |
192 | goto err; | |
193 | if (!EVP_DigestSignFinal(&ctx, A1, &A1_len)) | |
194 | goto err; | |
195 | ||
196 | for (;;) { | |
197 | /* Reinit mac contexts */ | |
198 | if (!EVP_MD_CTX_copy_ex(&ctx, &ctx_init)) | |
199 | goto err; | |
200 | if (!EVP_DigestSignUpdate(&ctx, A1, A1_len)) | |
201 | goto err; | |
202 | if (olen > chunk && !EVP_MD_CTX_copy_ex(&ctx_tmp, &ctx)) | |
203 | goto err; | |
204 | if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len)) | |
205 | goto err; | |
206 | if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len)) | |
207 | goto err; | |
208 | if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len)) | |
209 | goto err; | |
210 | if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len)) | |
211 | goto err; | |
212 | if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len)) | |
213 | goto err; | |
214 | ||
215 | if (olen > chunk) { | |
216 | if (!EVP_DigestSignFinal(&ctx, out, &j)) | |
217 | goto err; | |
218 | out += j; | |
219 | olen -= j; | |
220 | /* calc the next A1 value */ | |
221 | if (!EVP_DigestSignFinal(&ctx_tmp, A1, &A1_len)) | |
222 | goto err; | |
223 | } else { /* last one */ | |
224 | ||
225 | if (!EVP_DigestSignFinal(&ctx, A1, &A1_len)) | |
226 | goto err; | |
227 | memcpy(out, A1, olen); | |
228 | break; | |
229 | } | |
230 | } | |
231 | ret = 1; | |
232 | err: | |
233 | EVP_PKEY_free(mac_key); | |
234 | EVP_MD_CTX_cleanup(&ctx); | |
235 | EVP_MD_CTX_cleanup(&ctx_tmp); | |
236 | EVP_MD_CTX_cleanup(&ctx_init); | |
237 | OPENSSL_cleanse(A1, sizeof(A1)); | |
238 | return ret; | |
239 | } | |
58964a49 | 240 | |
761772d7 | 241 | /* seed1 through seed5 are virtually concatenated */ |
7837c7ec | 242 | static int tls1_PRF(long digest_mask, |
0f113f3e MC |
243 | const void *seed1, int seed1_len, |
244 | const void *seed2, int seed2_len, | |
245 | const void *seed3, int seed3_len, | |
246 | const void *seed4, int seed4_len, | |
247 | const void *seed5, int seed5_len, | |
248 | const unsigned char *sec, int slen, | |
249 | unsigned char *out1, unsigned char *out2, int olen) | |
250 | { | |
251 | int len, i, idx, count; | |
252 | const unsigned char *S1; | |
253 | long m; | |
254 | const EVP_MD *md; | |
255 | int ret = 0; | |
256 | ||
257 | /* Count number of digests and partition sec evenly */ | |
258 | count = 0; | |
259 | for (idx = 0; ssl_get_handshake_digest(idx, &m, &md); idx++) { | |
260 | if ((m << TLS1_PRF_DGST_SHIFT) & digest_mask) | |
261 | count++; | |
262 | } | |
668f6f08 MC |
263 | if(!count) { |
264 | /* Should never happen */ | |
265 | SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR); | |
266 | goto err; | |
267 | } | |
0f113f3e MC |
268 | len = slen / count; |
269 | if (count == 1) | |
270 | slen = 0; | |
271 | S1 = sec; | |
272 | memset(out1, 0, olen); | |
273 | for (idx = 0; ssl_get_handshake_digest(idx, &m, &md); idx++) { | |
274 | if ((m << TLS1_PRF_DGST_SHIFT) & digest_mask) { | |
275 | if (!md) { | |
276 | SSLerr(SSL_F_TLS1_PRF, SSL_R_UNSUPPORTED_DIGEST_TYPE); | |
277 | goto err; | |
278 | } | |
279 | if (!tls1_P_hash(md, S1, len + (slen & 1), | |
280 | seed1, seed1_len, seed2, seed2_len, seed3, | |
281 | seed3_len, seed4, seed4_len, seed5, seed5_len, | |
282 | out2, olen)) | |
283 | goto err; | |
284 | S1 += len; | |
285 | for (i = 0; i < olen; i++) { | |
286 | out1[i] ^= out2[i]; | |
287 | } | |
288 | } | |
289 | } | |
290 | ret = 1; | |
291 | err: | |
292 | return ret; | |
81025661 | 293 | } |
0f113f3e | 294 | |
7837c7ec | 295 | static int tls1_generate_key_block(SSL *s, unsigned char *km, |
0f113f3e MC |
296 | unsigned char *tmp, int num) |
297 | { | |
298 | int ret; | |
299 | ret = tls1_PRF(ssl_get_algorithm2(s), | |
300 | TLS_MD_KEY_EXPANSION_CONST, | |
301 | TLS_MD_KEY_EXPANSION_CONST_SIZE, s->s3->server_random, | |
302 | SSL3_RANDOM_SIZE, s->s3->client_random, SSL3_RANDOM_SIZE, | |
303 | NULL, 0, NULL, 0, s->session->master_key, | |
304 | s->session->master_key_length, km, tmp, num); | |
f9b3bff6 | 305 | #ifdef KSSL_DEBUG |
0f113f3e MC |
306 | fprintf(stderr, "tls1_generate_key_block() ==> %d byte master_key =\n\t", |
307 | s->session->master_key_length); | |
308 | { | |
f9b3bff6 | 309 | int i; |
0f113f3e MC |
310 | for (i = 0; i < s->session->master_key_length; i++) { |
311 | fprintf(stderr, "%02X", s->session->master_key[i]); | |
312 | } | |
313 | fprintf(stderr, "\n"); | |
314 | } | |
315 | #endif /* KSSL_DEBUG */ | |
316 | return ret; | |
317 | } | |
58964a49 | 318 | |
6b691a5c | 319 | int tls1_change_cipher_state(SSL *s, int which) |
0f113f3e MC |
320 | { |
321 | static const unsigned char empty[] = ""; | |
322 | unsigned char *p, *mac_secret; | |
323 | unsigned char *exp_label; | |
324 | unsigned char tmp1[EVP_MAX_KEY_LENGTH]; | |
325 | unsigned char tmp2[EVP_MAX_KEY_LENGTH]; | |
326 | unsigned char iv1[EVP_MAX_IV_LENGTH * 2]; | |
327 | unsigned char iv2[EVP_MAX_IV_LENGTH * 2]; | |
328 | unsigned char *ms, *key, *iv; | |
329 | int client_write; | |
330 | EVP_CIPHER_CTX *dd; | |
331 | const EVP_CIPHER *c; | |
09b6c2ef | 332 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 333 | const SSL_COMP *comp; |
09b6c2ef | 334 | #endif |
0f113f3e MC |
335 | const EVP_MD *m; |
336 | int mac_type; | |
337 | int *mac_secret_size; | |
338 | EVP_MD_CTX *mac_ctx; | |
339 | EVP_PKEY *mac_key; | |
340 | int is_export, n, i, j, k, exp_label_len, cl; | |
341 | int reuse_dd = 0; | |
342 | ||
343 | is_export = SSL_C_IS_EXPORT(s->s3->tmp.new_cipher); | |
344 | c = s->s3->tmp.new_sym_enc; | |
345 | m = s->s3->tmp.new_hash; | |
346 | mac_type = s->s3->tmp.new_mac_pkey_type; | |
09b6c2ef | 347 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 348 | comp = s->s3->tmp.new_compression; |
09b6c2ef | 349 | #endif |
58964a49 | 350 | |
f9b3bff6 | 351 | #ifdef KSSL_DEBUG |
0f113f3e MC |
352 | fprintf(stderr, "tls1_change_cipher_state(which= %d) w/\n", which); |
353 | fprintf(stderr, "\talg= %ld/%ld, comp= %p\n", | |
354 | s->s3->tmp.new_cipher->algorithm_mkey, | |
355 | s->s3->tmp.new_cipher->algorithm_auth, comp); | |
356 | fprintf(stderr, "\tevp_cipher == %p ==? &d_cbc_ede_cipher3\n", c); | |
357 | fprintf(stderr, "\tevp_cipher: nid, blksz= %d, %d, keylen=%d, ivlen=%d\n", | |
358 | c->nid, c->block_size, c->key_len, c->iv_len); | |
359 | fprintf(stderr, "\tkey_block: len= %d, data= ", | |
360 | s->s3->tmp.key_block_length); | |
361 | { | |
6343829a | 362 | int i; |
0f113f3e MC |
363 | for (i = 0; i < s->s3->tmp.key_block_length; i++) |
364 | fprintf(stderr, "%02x", s->s3->tmp.key_block[i]); | |
365 | fprintf(stderr, "\n"); | |
366 | } | |
367 | #endif /* KSSL_DEBUG */ | |
368 | ||
369 | if (which & SSL3_CC_READ) { | |
370 | if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) | |
371 | s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM; | |
372 | else | |
373 | s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM; | |
374 | ||
375 | if (s->enc_read_ctx != NULL) | |
376 | reuse_dd = 1; | |
377 | else if ((s->enc_read_ctx = | |
378 | OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL) | |
379 | goto err; | |
380 | else | |
381 | /* | |
382 | * make sure it's intialized in case we exit later with an error | |
383 | */ | |
384 | EVP_CIPHER_CTX_init(s->enc_read_ctx); | |
385 | dd = s->enc_read_ctx; | |
386 | mac_ctx = ssl_replace_hash(&s->read_hash, NULL); | |
09b6c2ef | 387 | #ifndef OPENSSL_NO_COMP |
0f113f3e MC |
388 | if (s->expand != NULL) { |
389 | COMP_CTX_free(s->expand); | |
390 | s->expand = NULL; | |
391 | } | |
392 | if (comp != NULL) { | |
393 | s->expand = COMP_CTX_new(comp->method); | |
394 | if (s->expand == NULL) { | |
395 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
396 | SSL_R_COMPRESSION_LIBRARY_ERROR); | |
397 | goto err2; | |
398 | } | |
bd2e3a95 | 399 | if (!RECORD_LAYER_setup_comp_buffer(&s->rlayer)) |
0f113f3e MC |
400 | goto err; |
401 | } | |
09b6c2ef | 402 | #endif |
0f113f3e | 403 | /* |
d5d0a1cb | 404 | * this is done by dtls1_reset_seq_numbers for DTLS |
0f113f3e | 405 | */ |
d5d0a1cb | 406 | if (!SSL_IS_DTLS(s)) |
0f113f3e MC |
407 | memset(&(s->s3->read_sequence[0]), 0, 8); |
408 | mac_secret = &(s->s3->read_mac_secret[0]); | |
409 | mac_secret_size = &(s->s3->read_mac_secret_size); | |
410 | } else { | |
411 | if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) | |
412 | s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM; | |
413 | else | |
414 | s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM; | |
415 | if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s)) | |
416 | reuse_dd = 1; | |
417 | else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) | |
418 | goto err; | |
419 | dd = s->enc_write_ctx; | |
420 | if (SSL_IS_DTLS(s)) { | |
421 | mac_ctx = EVP_MD_CTX_create(); | |
422 | if (!mac_ctx) | |
423 | goto err; | |
424 | s->write_hash = mac_ctx; | |
425 | } else | |
426 | mac_ctx = ssl_replace_hash(&s->write_hash, NULL); | |
09b6c2ef | 427 | #ifndef OPENSSL_NO_COMP |
0f113f3e MC |
428 | if (s->compress != NULL) { |
429 | COMP_CTX_free(s->compress); | |
430 | s->compress = NULL; | |
431 | } | |
432 | if (comp != NULL) { | |
433 | s->compress = COMP_CTX_new(comp->method); | |
434 | if (s->compress == NULL) { | |
435 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
436 | SSL_R_COMPRESSION_LIBRARY_ERROR); | |
437 | goto err2; | |
438 | } | |
439 | } | |
09b6c2ef | 440 | #endif |
0f113f3e | 441 | /* |
d5d0a1cb | 442 | * this is done by dtls1_reset_seq_numbers for DTLS |
0f113f3e | 443 | */ |
d5d0a1cb | 444 | if (!SSL_IS_DTLS(s)) |
0f113f3e MC |
445 | memset(&(s->s3->write_sequence[0]), 0, 8); |
446 | mac_secret = &(s->s3->write_mac_secret[0]); | |
447 | mac_secret_size = &(s->s3->write_mac_secret_size); | |
448 | } | |
449 | ||
450 | if (reuse_dd) | |
451 | EVP_CIPHER_CTX_cleanup(dd); | |
452 | ||
453 | p = s->s3->tmp.key_block; | |
454 | i = *mac_secret_size = s->s3->tmp.new_mac_secret_size; | |
455 | ||
456 | cl = EVP_CIPHER_key_length(c); | |
457 | j = is_export ? (cl < SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher) ? | |
458 | cl : SSL_C_EXPORT_KEYLENGTH(s->s3->tmp.new_cipher)) : cl; | |
459 | /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */ | |
460 | /* If GCM mode only part of IV comes from PRF */ | |
461 | if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) | |
462 | k = EVP_GCM_TLS_FIXED_IV_LEN; | |
463 | else | |
464 | k = EVP_CIPHER_iv_length(c); | |
465 | if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || | |
466 | (which == SSL3_CHANGE_CIPHER_SERVER_READ)) { | |
467 | ms = &(p[0]); | |
468 | n = i + i; | |
469 | key = &(p[n]); | |
470 | n += j + j; | |
471 | iv = &(p[n]); | |
472 | n += k + k; | |
473 | exp_label = (unsigned char *)TLS_MD_CLIENT_WRITE_KEY_CONST; | |
474 | exp_label_len = TLS_MD_CLIENT_WRITE_KEY_CONST_SIZE; | |
475 | client_write = 1; | |
476 | } else { | |
477 | n = i; | |
478 | ms = &(p[n]); | |
479 | n += i + j; | |
480 | key = &(p[n]); | |
481 | n += j + k; | |
482 | iv = &(p[n]); | |
483 | n += k; | |
484 | exp_label = (unsigned char *)TLS_MD_SERVER_WRITE_KEY_CONST; | |
485 | exp_label_len = TLS_MD_SERVER_WRITE_KEY_CONST_SIZE; | |
486 | client_write = 0; | |
487 | } | |
488 | ||
489 | if (n > s->s3->tmp.key_block_length) { | |
490 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); | |
491 | goto err2; | |
492 | } | |
493 | ||
494 | memcpy(mac_secret, ms, i); | |
495 | ||
496 | if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) { | |
497 | mac_key = EVP_PKEY_new_mac_key(mac_type, NULL, | |
498 | mac_secret, *mac_secret_size); | |
499 | EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key); | |
500 | EVP_PKEY_free(mac_key); | |
501 | } | |
58964a49 | 502 | #ifdef TLS_DEBUG |
0f113f3e MC |
503 | printf("which = %04X\nmac key=", which); |
504 | { | |
505 | int z; | |
506 | for (z = 0; z < i; z++) | |
507 | printf("%02X%c", ms[z], ((z + 1) % 16) ? ' ' : '\n'); | |
508 | } | |
58964a49 | 509 | #endif |
0f113f3e MC |
510 | if (is_export) { |
511 | /* | |
512 | * In here I set both the read and write key/iv to the same value | |
513 | * since only the correct one will be used :-). | |
514 | */ | |
515 | if (!tls1_PRF(ssl_get_algorithm2(s), | |
516 | exp_label, exp_label_len, | |
517 | s->s3->client_random, SSL3_RANDOM_SIZE, | |
518 | s->s3->server_random, SSL3_RANDOM_SIZE, | |
519 | NULL, 0, NULL, 0, | |
520 | key, j, tmp1, tmp2, EVP_CIPHER_key_length(c))) | |
521 | goto err2; | |
522 | key = tmp1; | |
523 | ||
524 | if (k > 0) { | |
525 | if (!tls1_PRF(ssl_get_algorithm2(s), | |
526 | TLS_MD_IV_BLOCK_CONST, TLS_MD_IV_BLOCK_CONST_SIZE, | |
527 | s->s3->client_random, SSL3_RANDOM_SIZE, | |
528 | s->s3->server_random, SSL3_RANDOM_SIZE, | |
529 | NULL, 0, NULL, 0, empty, 0, iv1, iv2, k * 2)) | |
530 | goto err2; | |
531 | if (client_write) | |
532 | iv = iv1; | |
533 | else | |
534 | iv = &(iv1[k]); | |
535 | } | |
536 | } | |
f9b3bff6 | 537 | #ifdef KSSL_DEBUG |
0f113f3e | 538 | { |
6343829a | 539 | int i; |
0f113f3e MC |
540 | fprintf(stderr, "EVP_CipherInit_ex(dd,c,key=,iv=,which)\n"); |
541 | fprintf(stderr, "\tkey= "); | |
542 | for (i = 0; i < c->key_len; i++) | |
543 | fprintf(stderr, "%02x", key[i]); | |
544 | fprintf(stderr, "\n"); | |
545 | fprintf(stderr, "\t iv= "); | |
546 | for (i = 0; i < c->iv_len; i++) | |
547 | fprintf(stderr, "%02x", iv[i]); | |
548 | fprintf(stderr, "\n"); | |
549 | } | |
550 | #endif /* KSSL_DEBUG */ | |
551 | ||
552 | if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) { | |
eadf70d2 MC |
553 | if (!EVP_CipherInit_ex(dd, c, NULL, key, NULL, (which & SSL3_CC_WRITE)) |
554 | || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GCM_SET_IV_FIXED, k, iv)) { | |
555 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); | |
556 | goto err2; | |
557 | } | |
558 | } else { | |
559 | if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) { | |
560 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); | |
561 | goto err2; | |
562 | } | |
563 | } | |
0f113f3e | 564 | /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */ |
eadf70d2 MC |
565 | if ((EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER) && *mac_secret_size |
566 | && !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_MAC_KEY, | |
567 | *mac_secret_size, mac_secret)) { | |
568 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); | |
569 | goto err2; | |
570 | } | |
1cf218bc | 571 | #ifdef OPENSSL_SSL_TRACE_CRYPTO |
0f113f3e MC |
572 | if (s->msg_callback) { |
573 | int wh = which & SSL3_CC_WRITE ? TLS1_RT_CRYPTO_WRITE : 0; | |
574 | if (*mac_secret_size) | |
575 | s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_MAC, | |
576 | mac_secret, *mac_secret_size, | |
577 | s, s->msg_callback_arg); | |
578 | if (c->key_len) | |
579 | s->msg_callback(2, s->version, wh | TLS1_RT_CRYPTO_KEY, | |
580 | key, c->key_len, s, s->msg_callback_arg); | |
581 | if (k) { | |
582 | if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) | |
583 | wh |= TLS1_RT_CRYPTO_FIXED_IV; | |
584 | else | |
585 | wh |= TLS1_RT_CRYPTO_IV; | |
586 | s->msg_callback(2, s->version, wh, iv, k, s, s->msg_callback_arg); | |
587 | } | |
588 | } | |
1cf218bc DSH |
589 | #endif |
590 | ||
58964a49 | 591 | #ifdef TLS_DEBUG |
0f113f3e MC |
592 | printf("which = %04X\nkey=", which); |
593 | { | |
594 | int z; | |
595 | for (z = 0; z < EVP_CIPHER_key_length(c); z++) | |
596 | printf("%02X%c", key[z], ((z + 1) % 16) ? ' ' : '\n'); | |
597 | } | |
598 | printf("\niv="); | |
599 | { | |
600 | int z; | |
601 | for (z = 0; z < k; z++) | |
602 | printf("%02X%c", iv[z], ((z + 1) % 16) ? ' ' : '\n'); | |
603 | } | |
604 | printf("\n"); | |
58964a49 RE |
605 | #endif |
606 | ||
0f113f3e MC |
607 | OPENSSL_cleanse(tmp1, sizeof(tmp1)); |
608 | OPENSSL_cleanse(tmp2, sizeof(tmp1)); | |
609 | OPENSSL_cleanse(iv1, sizeof(iv1)); | |
610 | OPENSSL_cleanse(iv2, sizeof(iv2)); | |
611 | return (1); | |
612 | err: | |
613 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE); | |
614 | err2: | |
615 | return (0); | |
616 | } | |
58964a49 | 617 | |
6b691a5c | 618 | int tls1_setup_key_block(SSL *s) |
0f113f3e MC |
619 | { |
620 | unsigned char *p1, *p2 = NULL; | |
621 | const EVP_CIPHER *c; | |
622 | const EVP_MD *hash; | |
623 | int num; | |
624 | SSL_COMP *comp; | |
625 | int mac_type = NID_undef, mac_secret_size = 0; | |
626 | int ret = 0; | |
58964a49 | 627 | |
f9b3bff6 | 628 | #ifdef KSSL_DEBUG |
0f113f3e MC |
629 | fprintf(stderr, "tls1_setup_key_block()\n"); |
630 | #endif /* KSSL_DEBUG */ | |
631 | ||
632 | if (s->s3->tmp.key_block_length != 0) | |
633 | return (1); | |
634 | ||
635 | if (!ssl_cipher_get_evp | |
636 | (s->session, &c, &hash, &mac_type, &mac_secret_size, &comp, | |
637 | SSL_USE_ETM(s))) { | |
638 | SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE); | |
639 | return (0); | |
640 | } | |
641 | ||
642 | s->s3->tmp.new_sym_enc = c; | |
643 | s->s3->tmp.new_hash = hash; | |
644 | s->s3->tmp.new_mac_pkey_type = mac_type; | |
645 | s->s3->tmp.new_mac_secret_size = mac_secret_size; | |
646 | num = | |
647 | EVP_CIPHER_key_length(c) + mac_secret_size + EVP_CIPHER_iv_length(c); | |
648 | num *= 2; | |
649 | ||
650 | ssl3_cleanup_key_block(s); | |
651 | ||
652 | if ((p1 = (unsigned char *)OPENSSL_malloc(num)) == NULL) { | |
653 | SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE); | |
654 | goto err; | |
655 | } | |
656 | ||
657 | s->s3->tmp.key_block_length = num; | |
658 | s->s3->tmp.key_block = p1; | |
659 | ||
660 | if ((p2 = (unsigned char *)OPENSSL_malloc(num)) == NULL) { | |
661 | SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE); | |
1d2932de | 662 | OPENSSL_free(p1); |
0f113f3e MC |
663 | goto err; |
664 | } | |
58964a49 | 665 | #ifdef TLS_DEBUG |
0f113f3e MC |
666 | printf("client random\n"); |
667 | { | |
668 | int z; | |
669 | for (z = 0; z < SSL3_RANDOM_SIZE; z++) | |
670 | printf("%02X%c", s->s3->client_random[z], | |
671 | ((z + 1) % 16) ? ' ' : '\n'); | |
672 | } | |
673 | printf("server random\n"); | |
674 | { | |
675 | int z; | |
676 | for (z = 0; z < SSL3_RANDOM_SIZE; z++) | |
677 | printf("%02X%c", s->s3->server_random[z], | |
678 | ((z + 1) % 16) ? ' ' : '\n'); | |
679 | } | |
680 | printf("master key\n"); | |
681 | { | |
682 | int z; | |
683 | for (z = 0; z < s->session->master_key_length; z++) | |
684 | printf("%02X%c", s->session->master_key[z], | |
685 | ((z + 1) % 16) ? ' ' : '\n'); | |
686 | } | |
58964a49 | 687 | #endif |
0f113f3e MC |
688 | if (!tls1_generate_key_block(s, p1, p2, num)) |
689 | goto err; | |
58964a49 | 690 | #ifdef TLS_DEBUG |
0f113f3e MC |
691 | printf("\nkey block\n"); |
692 | { | |
693 | int z; | |
694 | for (z = 0; z < num; z++) | |
695 | printf("%02X%c", p1[z], ((z + 1) % 16) ? ' ' : '\n'); | |
696 | } | |
58964a49 RE |
697 | #endif |
698 | ||
0f113f3e MC |
699 | if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS) |
700 | && s->method->version <= TLS1_VERSION) { | |
701 | /* | |
702 | * enable vulnerability countermeasure for CBC ciphers with known-IV | |
703 | * problem (http://www.openssl.org/~bodo/tls-cbc.txt) | |
704 | */ | |
705 | s->s3->need_empty_fragments = 1; | |
706 | ||
707 | if (s->session->cipher != NULL) { | |
708 | if (s->session->cipher->algorithm_enc == SSL_eNULL) | |
709 | s->s3->need_empty_fragments = 0; | |
710 | ||
d1d0be3c | 711 | #ifndef OPENSSL_NO_RC4 |
0f113f3e MC |
712 | if (s->session->cipher->algorithm_enc == SSL_RC4) |
713 | s->s3->need_empty_fragments = 0; | |
82b0bf0b | 714 | #endif |
0f113f3e MC |
715 | } |
716 | } | |
717 | ||
718 | ret = 1; | |
719 | err: | |
720 | if (p2) { | |
721 | OPENSSL_cleanse(p2, num); | |
722 | OPENSSL_free(p2); | |
723 | } | |
724 | return (ret); | |
725 | } | |
58964a49 | 726 | |
2acc020b | 727 | |
81025661 | 728 | int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *out) |
0f113f3e MC |
729 | { |
730 | unsigned int ret; | |
731 | EVP_MD_CTX ctx, *d = NULL; | |
732 | int i; | |
733 | ||
734 | if (s->s3->handshake_buffer) | |
735 | if (!ssl3_digest_cached_records(s)) | |
736 | return 0; | |
737 | ||
738 | for (i = 0; i < SSL_MAX_DIGEST; i++) { | |
739 | if (s->s3->handshake_dgst[i] | |
740 | && EVP_MD_CTX_type(s->s3->handshake_dgst[i]) == md_nid) { | |
741 | d = s->s3->handshake_dgst[i]; | |
742 | break; | |
743 | } | |
744 | } | |
745 | if (!d) { | |
746 | SSLerr(SSL_F_TLS1_CERT_VERIFY_MAC, SSL_R_NO_REQUIRED_DIGEST); | |
747 | return 0; | |
748 | } | |
749 | ||
750 | EVP_MD_CTX_init(&ctx); | |
751 | EVP_MD_CTX_copy_ex(&ctx, d); | |
752 | EVP_DigestFinal_ex(&ctx, out, &ret); | |
753 | EVP_MD_CTX_cleanup(&ctx); | |
754 | return ((int)ret); | |
755 | } | |
58964a49 | 756 | |
48fbcbac DSH |
757 | int tls1_final_finish_mac(SSL *s, const char *str, int slen, |
758 | unsigned char *out) | |
0f113f3e | 759 | { |
48fbcbac DSH |
760 | int hashlen; |
761 | unsigned char hash[2 * EVP_MAX_MD_SIZE]; | |
762 | unsigned char buf2[12]; | |
0f113f3e MC |
763 | |
764 | if (s->s3->handshake_buffer) | |
765 | if (!ssl3_digest_cached_records(s)) | |
766 | return 0; | |
767 | ||
48fbcbac | 768 | hashlen = ssl_handshake_hash(s, hash, sizeof(hash)); |
0f113f3e | 769 | |
48fbcbac DSH |
770 | if (hashlen == 0) |
771 | return 0; | |
0f113f3e MC |
772 | |
773 | if (!tls1_PRF(ssl_get_algorithm2(s), | |
48fbcbac | 774 | str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0, |
0f113f3e MC |
775 | s->session->master_key, s->session->master_key_length, |
776 | out, buf2, sizeof buf2)) | |
0f113f3e | 777 | return 0; |
c9dd49a7 MC |
778 | OPENSSL_cleanse(hash, hashlen); |
779 | OPENSSL_cleanse(buf2, sizeof(buf2)); | |
48fbcbac | 780 | return sizeof buf2; |
0f113f3e | 781 | } |
58964a49 | 782 | |
6b691a5c | 783 | int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, |
0f113f3e MC |
784 | int len) |
785 | { | |
786 | unsigned char buff[SSL_MAX_MASTER_KEY_LENGTH]; | |
a2f9200f | 787 | |
f9b3bff6 | 788 | #ifdef KSSL_DEBUG |
0f113f3e MC |
789 | fprintf(stderr, "tls1_generate_master_secret(%p,%p, %p, %d)\n", s, out, p, |
790 | len); | |
791 | #endif /* KSSL_DEBUG */ | |
f9b3bff6 | 792 | |
0cfb0e75 DSH |
793 | if (s->session->flags & SSL_SESS_FLAG_EXTMS) { |
794 | unsigned char hash[EVP_MAX_MD_SIZE * 2]; | |
795 | int hashlen; | |
796 | /* If we don't have any digests cache records */ | |
797 | if (s->s3->handshake_buffer) { | |
798 | /* | |
799 | * keep record buffer: this wont affect client auth because we're | |
800 | * freezing the buffer at the same point (after client key | |
801 | * exchange and before certificate verify) | |
802 | */ | |
803 | s->s3->flags |= TLS1_FLAGS_KEEP_HANDSHAKE; | |
69f68237 MC |
804 | if(!ssl3_digest_cached_records(s)) |
805 | return -1; | |
0cfb0e75 DSH |
806 | } |
807 | hashlen = ssl_handshake_hash(s, hash, sizeof(hash)); | |
808 | #ifdef SSL_DEBUG | |
809 | fprintf(stderr, "Handshake hashes:\n"); | |
810 | BIO_dump_fp(stderr, (char *)hash, hashlen); | |
811 | #endif | |
812 | tls1_PRF(ssl_get_algorithm2(s), | |
813 | TLS_MD_EXTENDED_MASTER_SECRET_CONST, | |
814 | TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE, | |
815 | hash, hashlen, | |
0cfb0e75 | 816 | NULL, 0, |
3d47c1d3 DSH |
817 | NULL, 0, |
818 | NULL, 0, p, len, s->session->master_key, buff, sizeof buff); | |
0cfb0e75 DSH |
819 | OPENSSL_cleanse(hash, hashlen); |
820 | } else { | |
821 | tls1_PRF(ssl_get_algorithm2(s), | |
822 | TLS_MD_MASTER_SECRET_CONST, | |
823 | TLS_MD_MASTER_SECRET_CONST_SIZE, | |
824 | s->s3->client_random, SSL3_RANDOM_SIZE, | |
3d47c1d3 | 825 | NULL, 0, |
0cfb0e75 | 826 | s->s3->server_random, SSL3_RANDOM_SIZE, |
3d47c1d3 | 827 | NULL, 0, p, len, s->session->master_key, buff, sizeof buff); |
0cfb0e75 | 828 | } |
c9dd49a7 | 829 | OPENSSL_cleanse(buff, sizeof buff); |
a2f9200f | 830 | #ifdef SSL_DEBUG |
0f113f3e MC |
831 | fprintf(stderr, "Premaster Secret:\n"); |
832 | BIO_dump_fp(stderr, (char *)p, len); | |
833 | fprintf(stderr, "Client Random:\n"); | |
834 | BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE); | |
835 | fprintf(stderr, "Server Random:\n"); | |
836 | BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE); | |
837 | fprintf(stderr, "Master Secret:\n"); | |
838 | BIO_dump_fp(stderr, (char *)s->session->master_key, | |
839 | SSL3_MASTER_SECRET_SIZE); | |
a2f9200f | 840 | #endif |
761772d7 | 841 | |
1cf218bc | 842 | #ifdef OPENSSL_SSL_TRACE_CRYPTO |
0f113f3e MC |
843 | if (s->msg_callback) { |
844 | s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER, | |
845 | p, len, s, s->msg_callback_arg); | |
846 | s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM, | |
847 | s->s3->client_random, SSL3_RANDOM_SIZE, | |
848 | s, s->msg_callback_arg); | |
849 | s->msg_callback(2, s->version, TLS1_RT_CRYPTO_SERVER_RANDOM, | |
850 | s->s3->server_random, SSL3_RANDOM_SIZE, | |
851 | s, s->msg_callback_arg); | |
852 | s->msg_callback(2, s->version, TLS1_RT_CRYPTO_MASTER, | |
853 | s->session->master_key, | |
854 | SSL3_MASTER_SECRET_SIZE, s, s->msg_callback_arg); | |
855 | } | |
1cf218bc DSH |
856 | #endif |
857 | ||
f9b3bff6 | 858 | #ifdef KSSL_DEBUG |
0f113f3e MC |
859 | fprintf(stderr, "tls1_generate_master_secret() complete\n"); |
860 | #endif /* KSSL_DEBUG */ | |
861 | return (SSL3_MASTER_SECRET_SIZE); | |
862 | } | |
58964a49 | 863 | |
74b4b494 | 864 | int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, |
0f113f3e MC |
865 | const char *label, size_t llen, |
866 | const unsigned char *context, | |
867 | size_t contextlen, int use_context) | |
868 | { | |
869 | unsigned char *buff; | |
870 | unsigned char *val = NULL; | |
871 | size_t vallen, currentvalpos; | |
872 | int rv; | |
e0af0405 BL |
873 | |
874 | #ifdef KSSL_DEBUG | |
0f113f3e MC |
875 | fprintf(stderr, "tls1_export_keying_material(%p,%p,%lu,%s,%lu,%p,%lu)\n", |
876 | s, out, olen, label, llen, context, contextlen); | |
877 | #endif /* KSSL_DEBUG */ | |
878 | ||
879 | buff = OPENSSL_malloc(olen); | |
880 | if (buff == NULL) | |
881 | goto err2; | |
882 | ||
883 | /* | |
884 | * construct PRF arguments we construct the PRF argument ourself rather | |
885 | * than passing separate values into the TLS PRF to ensure that the | |
886 | * concatenation of values does not create a prohibited label. | |
887 | */ | |
888 | vallen = llen + SSL3_RANDOM_SIZE * 2; | |
889 | if (use_context) { | |
890 | vallen += 2 + contextlen; | |
891 | } | |
892 | ||
893 | val = OPENSSL_malloc(vallen); | |
894 | if (val == NULL) | |
895 | goto err2; | |
896 | currentvalpos = 0; | |
897 | memcpy(val + currentvalpos, (unsigned char *)label, llen); | |
898 | currentvalpos += llen; | |
899 | memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE); | |
900 | currentvalpos += SSL3_RANDOM_SIZE; | |
901 | memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE); | |
902 | currentvalpos += SSL3_RANDOM_SIZE; | |
903 | ||
904 | if (use_context) { | |
905 | val[currentvalpos] = (contextlen >> 8) & 0xff; | |
906 | currentvalpos++; | |
907 | val[currentvalpos] = contextlen & 0xff; | |
908 | currentvalpos++; | |
909 | if ((contextlen > 0) || (context != NULL)) { | |
910 | memcpy(val + currentvalpos, context, contextlen); | |
911 | } | |
912 | } | |
913 | ||
914 | /* | |
915 | * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited | |
916 | * label len) = 15, so size of val > max(prohibited label len) = 15 and | |
917 | * the comparisons won't have buffer overflow | |
918 | */ | |
919 | if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST, | |
920 | TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0) | |
921 | goto err1; | |
922 | if (memcmp(val, TLS_MD_SERVER_FINISH_CONST, | |
923 | TLS_MD_SERVER_FINISH_CONST_SIZE) == 0) | |
924 | goto err1; | |
925 | if (memcmp(val, TLS_MD_MASTER_SECRET_CONST, | |
926 | TLS_MD_MASTER_SECRET_CONST_SIZE) == 0) | |
927 | goto err1; | |
0cfb0e75 DSH |
928 | if (memcmp(val, TLS_MD_EXTENDED_MASTER_SECRET_CONST, |
929 | TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE) == 0) | |
930 | goto err1; | |
0f113f3e MC |
931 | if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST, |
932 | TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0) | |
933 | goto err1; | |
934 | ||
935 | rv = tls1_PRF(ssl_get_algorithm2(s), | |
936 | val, vallen, | |
937 | NULL, 0, | |
938 | NULL, 0, | |
939 | NULL, 0, | |
940 | NULL, 0, | |
941 | s->session->master_key, s->session->master_key_length, | |
942 | out, buff, olen); | |
c9dd49a7 MC |
943 | OPENSSL_cleanse(val, vallen); |
944 | OPENSSL_cleanse(buff, olen); | |
e0af0405 BL |
945 | |
946 | #ifdef KSSL_DEBUG | |
0f113f3e MC |
947 | fprintf(stderr, "tls1_export_keying_material() complete\n"); |
948 | #endif /* KSSL_DEBUG */ | |
949 | goto ret; | |
950 | err1: | |
951 | SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, | |
952 | SSL_R_TLS_ILLEGAL_EXPORTER_LABEL); | |
953 | rv = 0; | |
954 | goto ret; | |
955 | err2: | |
956 | SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE); | |
957 | rv = 0; | |
958 | ret: | |
959 | if (buff != NULL) | |
960 | OPENSSL_free(buff); | |
961 | if (val != NULL) | |
962 | OPENSSL_free(val); | |
963 | return (rv); | |
964 | } | |
e0af0405 | 965 | |
6b691a5c | 966 | int tls1_alert_code(int code) |
0f113f3e MC |
967 | { |
968 | switch (code) { | |
969 | case SSL_AD_CLOSE_NOTIFY: | |
970 | return (SSL3_AD_CLOSE_NOTIFY); | |
971 | case SSL_AD_UNEXPECTED_MESSAGE: | |
972 | return (SSL3_AD_UNEXPECTED_MESSAGE); | |
973 | case SSL_AD_BAD_RECORD_MAC: | |
974 | return (SSL3_AD_BAD_RECORD_MAC); | |
975 | case SSL_AD_DECRYPTION_FAILED: | |
976 | return (TLS1_AD_DECRYPTION_FAILED); | |
977 | case SSL_AD_RECORD_OVERFLOW: | |
978 | return (TLS1_AD_RECORD_OVERFLOW); | |
979 | case SSL_AD_DECOMPRESSION_FAILURE: | |
980 | return (SSL3_AD_DECOMPRESSION_FAILURE); | |
981 | case SSL_AD_HANDSHAKE_FAILURE: | |
982 | return (SSL3_AD_HANDSHAKE_FAILURE); | |
983 | case SSL_AD_NO_CERTIFICATE: | |
984 | return (-1); | |
985 | case SSL_AD_BAD_CERTIFICATE: | |
986 | return (SSL3_AD_BAD_CERTIFICATE); | |
987 | case SSL_AD_UNSUPPORTED_CERTIFICATE: | |
988 | return (SSL3_AD_UNSUPPORTED_CERTIFICATE); | |
989 | case SSL_AD_CERTIFICATE_REVOKED: | |
990 | return (SSL3_AD_CERTIFICATE_REVOKED); | |
991 | case SSL_AD_CERTIFICATE_EXPIRED: | |
992 | return (SSL3_AD_CERTIFICATE_EXPIRED); | |
993 | case SSL_AD_CERTIFICATE_UNKNOWN: | |
994 | return (SSL3_AD_CERTIFICATE_UNKNOWN); | |
995 | case SSL_AD_ILLEGAL_PARAMETER: | |
996 | return (SSL3_AD_ILLEGAL_PARAMETER); | |
997 | case SSL_AD_UNKNOWN_CA: | |
998 | return (TLS1_AD_UNKNOWN_CA); | |
999 | case SSL_AD_ACCESS_DENIED: | |
1000 | return (TLS1_AD_ACCESS_DENIED); | |
1001 | case SSL_AD_DECODE_ERROR: | |
1002 | return (TLS1_AD_DECODE_ERROR); | |
1003 | case SSL_AD_DECRYPT_ERROR: | |
1004 | return (TLS1_AD_DECRYPT_ERROR); | |
1005 | case SSL_AD_EXPORT_RESTRICTION: | |
1006 | return (TLS1_AD_EXPORT_RESTRICTION); | |
1007 | case SSL_AD_PROTOCOL_VERSION: | |
1008 | return (TLS1_AD_PROTOCOL_VERSION); | |
1009 | case SSL_AD_INSUFFICIENT_SECURITY: | |
1010 | return (TLS1_AD_INSUFFICIENT_SECURITY); | |
1011 | case SSL_AD_INTERNAL_ERROR: | |
1012 | return (TLS1_AD_INTERNAL_ERROR); | |
1013 | case SSL_AD_USER_CANCELLED: | |
1014 | return (TLS1_AD_USER_CANCELLED); | |
1015 | case SSL_AD_NO_RENEGOTIATION: | |
1016 | return (TLS1_AD_NO_RENEGOTIATION); | |
1017 | case SSL_AD_UNSUPPORTED_EXTENSION: | |
1018 | return (TLS1_AD_UNSUPPORTED_EXTENSION); | |
1019 | case SSL_AD_CERTIFICATE_UNOBTAINABLE: | |
1020 | return (TLS1_AD_CERTIFICATE_UNOBTAINABLE); | |
1021 | case SSL_AD_UNRECOGNIZED_NAME: | |
1022 | return (TLS1_AD_UNRECOGNIZED_NAME); | |
1023 | case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: | |
1024 | return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE); | |
1025 | case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: | |
1026 | return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE); | |
1027 | case SSL_AD_UNKNOWN_PSK_IDENTITY: | |
1028 | return (TLS1_AD_UNKNOWN_PSK_IDENTITY); | |
1029 | case SSL_AD_INAPPROPRIATE_FALLBACK: | |
1030 | return (TLS1_AD_INAPPROPRIATE_FALLBACK); | |
0f113f3e MC |
1031 | default: |
1032 | return (-1); | |
1033 | } | |
1034 | } |