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Commit | Line | Data |
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846e33c7 | 1 | /* |
b0edda11 | 2 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. |
c80149d9 | 3 | * Copyright 2005 Nokia. All rights reserved. |
82b0bf0b | 4 | * |
846e33c7 RS |
5 | * Licensed under the OpenSSL license (the "License"). You may not use |
6 | * this file except in compliance with the License. You can obtain a copy | |
7 | * in the file LICENSE in the source distribution or at | |
8 | * https://www.openssl.org/source/license.html | |
82b0bf0b | 9 | */ |
846e33c7 | 10 | |
d02b48c6 | 11 | #include <stdio.h> |
d02b48c6 | 12 | #include "ssl_locl.h" |
7b63c0fa | 13 | #include <openssl/evp.h> |
dbad1690 | 14 | #include <openssl/md5.h> |
67dc995e | 15 | #include "internal/cryptlib.h" |
d02b48c6 | 16 | |
027e257b | 17 | static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num) |
0f113f3e | 18 | { |
6e59a892 RL |
19 | EVP_MD_CTX *m5; |
20 | EVP_MD_CTX *s1; | |
0f113f3e MC |
21 | unsigned char buf[16], smd[SHA_DIGEST_LENGTH]; |
22 | unsigned char c = 'A'; | |
23 | unsigned int i, j, k; | |
6e59a892 | 24 | int ret = 0; |
58964a49 | 25 | |
ca570cfd | 26 | #ifdef CHARSET_EBCDIC |
0f113f3e | 27 | c = os_toascii[c]; /* 'A' in ASCII */ |
ca570cfd | 28 | #endif |
0f113f3e | 29 | k = 0; |
bfb0641f RL |
30 | m5 = EVP_MD_CTX_new(); |
31 | s1 = EVP_MD_CTX_new(); | |
6e59a892 | 32 | if (m5 == NULL || s1 == NULL) { |
d4d2f3a4 MC |
33 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, |
34 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
35 | goto err; |
36 | } | |
37 | EVP_MD_CTX_set_flags(m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); | |
0f113f3e MC |
38 | for (i = 0; (int)i < num; i += MD5_DIGEST_LENGTH) { |
39 | k++; | |
a6fd7c1d | 40 | if (k > sizeof(buf)) { |
0f113f3e | 41 | /* bug: 'buf' is too small for this ciphersuite */ |
d4d2f3a4 MC |
42 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, |
43 | ERR_R_INTERNAL_ERROR); | |
a6fd7c1d | 44 | goto err; |
0f113f3e MC |
45 | } |
46 | ||
47 | for (j = 0; j < k; j++) | |
48 | buf[j] = c; | |
49 | c++; | |
d166ed8c DSH |
50 | if (!EVP_DigestInit_ex(s1, EVP_sha1(), NULL) |
51 | || !EVP_DigestUpdate(s1, buf, k) | |
52 | || !EVP_DigestUpdate(s1, s->session->master_key, | |
53 | s->session->master_key_length) | |
54 | || !EVP_DigestUpdate(s1, s->s3->server_random, SSL3_RANDOM_SIZE) | |
55 | || !EVP_DigestUpdate(s1, s->s3->client_random, SSL3_RANDOM_SIZE) | |
56 | || !EVP_DigestFinal_ex(s1, smd, NULL) | |
57 | || !EVP_DigestInit_ex(m5, EVP_md5(), NULL) | |
58 | || !EVP_DigestUpdate(m5, s->session->master_key, | |
59 | s->session->master_key_length) | |
d4d2f3a4 MC |
60 | || !EVP_DigestUpdate(m5, smd, SHA_DIGEST_LENGTH)) { |
61 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, | |
62 | ERR_R_INTERNAL_ERROR); | |
d166ed8c | 63 | goto err; |
d4d2f3a4 | 64 | } |
0f113f3e | 65 | if ((int)(i + MD5_DIGEST_LENGTH) > num) { |
d4d2f3a4 MC |
66 | if (!EVP_DigestFinal_ex(m5, smd, NULL)) { |
67 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
68 | SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR); | |
d166ed8c | 69 | goto err; |
d4d2f3a4 | 70 | } |
0f113f3e | 71 | memcpy(km, smd, (num - i)); |
d166ed8c | 72 | } else { |
d4d2f3a4 MC |
73 | if (!EVP_DigestFinal_ex(m5, km, NULL)) { |
74 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
75 | SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR); | |
d166ed8c | 76 | goto err; |
d4d2f3a4 | 77 | } |
d166ed8c | 78 | } |
0f113f3e MC |
79 | |
80 | km += MD5_DIGEST_LENGTH; | |
81 | } | |
e0f9bf1d | 82 | OPENSSL_cleanse(smd, sizeof(smd)); |
6e59a892 RL |
83 | ret = 1; |
84 | err: | |
bfb0641f RL |
85 | EVP_MD_CTX_free(m5); |
86 | EVP_MD_CTX_free(s1); | |
6e59a892 | 87 | return ret; |
0f113f3e | 88 | } |
58964a49 | 89 | |
6b691a5c | 90 | int ssl3_change_cipher_state(SSL *s, int which) |
0f113f3e MC |
91 | { |
92 | unsigned char *p, *mac_secret; | |
93 | unsigned char exp_key[EVP_MAX_KEY_LENGTH]; | |
94 | unsigned char exp_iv[EVP_MAX_IV_LENGTH]; | |
361a1191 | 95 | unsigned char *ms, *key, *iv; |
0f113f3e MC |
96 | EVP_CIPHER_CTX *dd; |
97 | const EVP_CIPHER *c; | |
09b6c2ef | 98 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 99 | COMP_METHOD *comp; |
09b6c2ef | 100 | #endif |
0f113f3e | 101 | const EVP_MD *m; |
8c1a5343 MC |
102 | int mdi; |
103 | size_t n, i, j, k, cl; | |
0f113f3e MC |
104 | int reuse_dd = 0; |
105 | ||
0f113f3e MC |
106 | c = s->s3->tmp.new_sym_enc; |
107 | m = s->s3->tmp.new_hash; | |
108 | /* m == NULL will lead to a crash later */ | |
380a522f | 109 | if (!ossl_assert(m != NULL)) { |
f63a17d6 MC |
110 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
111 | ERR_R_INTERNAL_ERROR); | |
112 | goto err; | |
380a522f | 113 | } |
09b6c2ef | 114 | #ifndef OPENSSL_NO_COMP |
0f113f3e MC |
115 | if (s->s3->tmp.new_compression == NULL) |
116 | comp = NULL; | |
117 | else | |
118 | comp = s->s3->tmp.new_compression->method; | |
09b6c2ef | 119 | #endif |
d02b48c6 | 120 | |
0f113f3e | 121 | if (which & SSL3_CC_READ) { |
f63a17d6 | 122 | if (s->enc_read_ctx != NULL) { |
0f113f3e | 123 | reuse_dd = 1; |
f63a17d6 MC |
124 | } else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) { |
125 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
126 | ERR_R_MALLOC_FAILURE); | |
0f113f3e | 127 | goto err; |
f63a17d6 | 128 | } else { |
0f113f3e | 129 | /* |
8483a003 | 130 | * make sure it's initialised in case we exit later with an error |
0f113f3e | 131 | */ |
846ec07d | 132 | EVP_CIPHER_CTX_reset(s->enc_read_ctx); |
f63a17d6 | 133 | } |
0f113f3e MC |
134 | dd = s->enc_read_ctx; |
135 | ||
5f3d93e4 | 136 | if (ssl_replace_hash(&s->read_hash, m) == NULL) { |
f63a17d6 MC |
137 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
138 | ERR_R_INTERNAL_ERROR); | |
139 | goto err; | |
69f68237 | 140 | } |
09b6c2ef | 141 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 142 | /* COMPRESS */ |
efa7dd64 RS |
143 | COMP_CTX_free(s->expand); |
144 | s->expand = NULL; | |
0f113f3e MC |
145 | if (comp != NULL) { |
146 | s->expand = COMP_CTX_new(comp); | |
147 | if (s->expand == NULL) { | |
f63a17d6 MC |
148 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
149 | SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
dd5a4279 | 150 | SSL_R_COMPRESSION_LIBRARY_ERROR); |
f63a17d6 | 151 | goto err; |
0f113f3e | 152 | } |
0f113f3e | 153 | } |
09b6c2ef | 154 | #endif |
de07f311 | 155 | RECORD_LAYER_reset_read_sequence(&s->rlayer); |
0f113f3e MC |
156 | mac_secret = &(s->s3->read_mac_secret[0]); |
157 | } else { | |
7426cd34 | 158 | s->statem.enc_write_state = ENC_WRITE_STATE_INVALID; |
f63a17d6 | 159 | if (s->enc_write_ctx != NULL) { |
0f113f3e | 160 | reuse_dd = 1; |
f63a17d6 MC |
161 | } else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) { |
162 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
163 | ERR_R_MALLOC_FAILURE); | |
0f113f3e | 164 | goto err; |
f63a17d6 | 165 | } else { |
0f113f3e | 166 | /* |
8483a003 | 167 | * make sure it's initialised in case we exit later with an error |
0f113f3e | 168 | */ |
846ec07d | 169 | EVP_CIPHER_CTX_reset(s->enc_write_ctx); |
f63a17d6 | 170 | } |
0f113f3e | 171 | dd = s->enc_write_ctx; |
5f3d93e4 | 172 | if (ssl_replace_hash(&s->write_hash, m) == NULL) { |
f63a17d6 MC |
173 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
174 | ERR_R_MALLOC_FAILURE); | |
175 | goto err; | |
69f68237 | 176 | } |
09b6c2ef | 177 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 178 | /* COMPRESS */ |
efa7dd64 RS |
179 | COMP_CTX_free(s->compress); |
180 | s->compress = NULL; | |
0f113f3e MC |
181 | if (comp != NULL) { |
182 | s->compress = COMP_CTX_new(comp); | |
183 | if (s->compress == NULL) { | |
f63a17d6 MC |
184 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
185 | SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
186 | SSL_R_COMPRESSION_LIBRARY_ERROR); | |
187 | goto err; | |
0f113f3e MC |
188 | } |
189 | } | |
09b6c2ef | 190 | #endif |
de07f311 | 191 | RECORD_LAYER_reset_write_sequence(&s->rlayer); |
0f113f3e MC |
192 | mac_secret = &(s->s3->write_mac_secret[0]); |
193 | } | |
194 | ||
195 | if (reuse_dd) | |
846ec07d | 196 | EVP_CIPHER_CTX_reset(dd); |
0f113f3e MC |
197 | |
198 | p = s->s3->tmp.key_block; | |
8c1a5343 | 199 | mdi = EVP_MD_size(m); |
f63a17d6 MC |
200 | if (mdi < 0) { |
201 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
202 | ERR_R_INTERNAL_ERROR); | |
203 | goto err; | |
204 | } | |
8c1a5343 | 205 | i = mdi; |
0f113f3e | 206 | cl = EVP_CIPHER_key_length(c); |
361a1191 | 207 | j = cl; |
0f113f3e MC |
208 | k = EVP_CIPHER_iv_length(c); |
209 | if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || | |
210 | (which == SSL3_CHANGE_CIPHER_SERVER_READ)) { | |
211 | ms = &(p[0]); | |
212 | n = i + i; | |
213 | key = &(p[n]); | |
214 | n += j + j; | |
215 | iv = &(p[n]); | |
216 | n += k + k; | |
0f113f3e MC |
217 | } else { |
218 | n = i; | |
219 | ms = &(p[n]); | |
220 | n += i + j; | |
221 | key = &(p[n]); | |
222 | n += j + k; | |
223 | iv = &(p[n]); | |
224 | n += k; | |
0f113f3e MC |
225 | } |
226 | ||
227 | if (n > s->s3->tmp.key_block_length) { | |
f63a17d6 MC |
228 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
229 | ERR_R_INTERNAL_ERROR); | |
230 | goto err; | |
0f113f3e MC |
231 | } |
232 | ||
0f113f3e | 233 | memcpy(mac_secret, ms, i); |
0f113f3e | 234 | |
f63a17d6 MC |
235 | if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) { |
236 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
237 | ERR_R_INTERNAL_ERROR); | |
238 | goto err; | |
239 | } | |
58964a49 | 240 | |
7426cd34 | 241 | s->statem.enc_write_state = ENC_WRITE_STATE_VALID; |
e0f9bf1d RS |
242 | OPENSSL_cleanse(exp_key, sizeof(exp_key)); |
243 | OPENSSL_cleanse(exp_iv, sizeof(exp_iv)); | |
208fb891 | 244 | return 1; |
0f113f3e | 245 | err: |
e0f9bf1d RS |
246 | OPENSSL_cleanse(exp_key, sizeof(exp_key)); |
247 | OPENSSL_cleanse(exp_iv, sizeof(exp_iv)); | |
26a7d938 | 248 | return 0; |
0f113f3e | 249 | } |
d02b48c6 | 250 | |
6b691a5c | 251 | int ssl3_setup_key_block(SSL *s) |
0f113f3e MC |
252 | { |
253 | unsigned char *p; | |
254 | const EVP_CIPHER *c; | |
255 | const EVP_MD *hash; | |
256 | int num; | |
257 | int ret = 0; | |
258 | SSL_COMP *comp; | |
259 | ||
260 | if (s->s3->tmp.key_block_length != 0) | |
208fb891 | 261 | return 1; |
0f113f3e MC |
262 | |
263 | if (!ssl_cipher_get_evp(s->session, &c, &hash, NULL, NULL, &comp, 0)) { | |
f63a17d6 MC |
264 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, |
265 | SSL_R_CIPHER_OR_HASH_UNAVAILABLE); | |
26a7d938 | 266 | return 0; |
0f113f3e MC |
267 | } |
268 | ||
269 | s->s3->tmp.new_sym_enc = c; | |
270 | s->s3->tmp.new_hash = hash; | |
09b6c2ef | 271 | #ifdef OPENSSL_NO_COMP |
0f113f3e | 272 | s->s3->tmp.new_compression = NULL; |
09b6c2ef | 273 | #else |
0f113f3e | 274 | s->s3->tmp.new_compression = comp; |
09b6c2ef | 275 | #endif |
d02b48c6 | 276 | |
0f113f3e MC |
277 | num = EVP_MD_size(hash); |
278 | if (num < 0) | |
279 | return 0; | |
280 | ||
281 | num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c); | |
282 | num *= 2; | |
0eab41fb | 283 | |
0f113f3e | 284 | ssl3_cleanup_key_block(s); |
d02b48c6 | 285 | |
f63a17d6 MC |
286 | if ((p = OPENSSL_malloc(num)) == NULL) { |
287 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, | |
288 | ERR_R_MALLOC_FAILURE); | |
289 | return 0; | |
290 | } | |
d02b48c6 | 291 | |
0f113f3e MC |
292 | s->s3->tmp.key_block_length = num; |
293 | s->s3->tmp.key_block = p; | |
d02b48c6 | 294 | |
d4d2f3a4 | 295 | /* Calls SSLfatal() as required */ |
0f113f3e | 296 | ret = ssl3_generate_key_block(s, p, num); |
d02b48c6 | 297 | |
0f113f3e MC |
298 | if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) { |
299 | /* | |
300 | * enable vulnerability countermeasure for CBC ciphers with known-IV | |
301 | * problem (http://www.openssl.org/~bodo/tls-cbc.txt) | |
302 | */ | |
303 | s->s3->need_empty_fragments = 1; | |
82b0bf0b | 304 | |
0f113f3e MC |
305 | if (s->session->cipher != NULL) { |
306 | if (s->session->cipher->algorithm_enc == SSL_eNULL) | |
307 | s->s3->need_empty_fragments = 0; | |
c21506ba | 308 | |
82b0bf0b | 309 | #ifndef OPENSSL_NO_RC4 |
0f113f3e MC |
310 | if (s->session->cipher->algorithm_enc == SSL_RC4) |
311 | s->s3->need_empty_fragments = 0; | |
82b0bf0b | 312 | #endif |
0f113f3e MC |
313 | } |
314 | } | |
d02b48c6 | 315 | |
0f113f3e | 316 | return ret; |
0f113f3e | 317 | } |
d02b48c6 | 318 | |
6b691a5c | 319 | void ssl3_cleanup_key_block(SSL *s) |
0f113f3e | 320 | { |
4b45c6e5 RS |
321 | OPENSSL_clear_free(s->s3->tmp.key_block, s->s3->tmp.key_block_length); |
322 | s->s3->tmp.key_block = NULL; | |
0f113f3e MC |
323 | s->s3->tmp.key_block_length = 0; |
324 | } | |
d02b48c6 | 325 | |
2c4a056f | 326 | int ssl3_init_finished_mac(SSL *s) |
0f113f3e | 327 | { |
2c4a056f MC |
328 | BIO *buf = BIO_new(BIO_s_mem()); |
329 | ||
330 | if (buf == NULL) { | |
4752c5de MC |
331 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_INIT_FINISHED_MAC, |
332 | ERR_R_MALLOC_FAILURE); | |
2c4a056f MC |
333 | return 0; |
334 | } | |
85fb6fda | 335 | ssl3_free_digest_list(s); |
2c4a056f | 336 | s->s3->handshake_buffer = buf; |
0f113f3e | 337 | (void)BIO_set_close(s->s3->handshake_buffer, BIO_CLOSE); |
2c4a056f | 338 | return 1; |
0f113f3e MC |
339 | } |
340 | ||
c7238204 DSH |
341 | /* |
342 | * Free digest list. Also frees handshake buffer since they are always freed | |
343 | * together. | |
344 | */ | |
345 | ||
0f113f3e MC |
346 | void ssl3_free_digest_list(SSL *s) |
347 | { | |
c7238204 DSH |
348 | BIO_free(s->s3->handshake_buffer); |
349 | s->s3->handshake_buffer = NULL; | |
bfb0641f | 350 | EVP_MD_CTX_free(s->s3->handshake_dgst); |
0f113f3e MC |
351 | s->s3->handshake_dgst = NULL; |
352 | } | |
81025661 | 353 | |
7ee8627f | 354 | int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len) |
0f113f3e | 355 | { |
f63a17d6 MC |
356 | int ret; |
357 | ||
7ee8627f | 358 | if (s->s3->handshake_dgst == NULL) { |
d166ed8c | 359 | /* Note: this writes to a memory BIO so a failure is a fatal error */ |
f63a17d6 MC |
360 | if (len > INT_MAX) { |
361 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
362 | SSL_R_OVERFLOW_ERROR); | |
7ee8627f | 363 | return 0; |
f63a17d6 | 364 | } |
7ee8627f | 365 | ret = BIO_write(s->s3->handshake_buffer, (void *)buf, (int)len); |
f63a17d6 MC |
366 | if (ret <= 0 || ret != (int)len) { |
367 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
368 | ERR_R_INTERNAL_ERROR); | |
369 | return 0; | |
370 | } | |
7ee8627f | 371 | } else { |
f63a17d6 MC |
372 | ret = EVP_DigestUpdate(s->s3->handshake_dgst, buf, len); |
373 | if (!ret) { | |
374 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
375 | ERR_R_INTERNAL_ERROR); | |
376 | return 0; | |
377 | } | |
7ee8627f | 378 | } |
f63a17d6 | 379 | return 1; |
0f113f3e | 380 | } |
6ba71a71 | 381 | |
124037fd | 382 | int ssl3_digest_cached_records(SSL *s, int keep) |
0f113f3e | 383 | { |
0f113f3e MC |
384 | const EVP_MD *md; |
385 | long hdatalen; | |
386 | void *hdata; | |
387 | ||
0f113f3e | 388 | if (s->s3->handshake_dgst == NULL) { |
124037fd DSH |
389 | hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata); |
390 | if (hdatalen <= 0) { | |
f63a17d6 MC |
391 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
392 | SSL_R_BAD_HANDSHAKE_LENGTH); | |
124037fd DSH |
393 | return 0; |
394 | } | |
0f113f3e | 395 | |
bfb0641f | 396 | s->s3->handshake_dgst = EVP_MD_CTX_new(); |
28ba2541 | 397 | if (s->s3->handshake_dgst == NULL) { |
f63a17d6 MC |
398 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
399 | ERR_R_MALLOC_FAILURE); | |
28ba2541 DSH |
400 | return 0; |
401 | } | |
402 | ||
403 | md = ssl_handshake_md(s); | |
a230b26e EK |
404 | if (md == NULL || !EVP_DigestInit_ex(s->s3->handshake_dgst, md, NULL) |
405 | || !EVP_DigestUpdate(s->s3->handshake_dgst, hdata, hdatalen)) { | |
f63a17d6 MC |
406 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
407 | ERR_R_INTERNAL_ERROR); | |
28ba2541 | 408 | return 0; |
0f113f3e MC |
409 | } |
410 | } | |
124037fd | 411 | if (keep == 0) { |
0f113f3e MC |
412 | BIO_free(s->s3->handshake_buffer); |
413 | s->s3->handshake_buffer = NULL; | |
414 | } | |
415 | ||
416 | return 1; | |
417 | } | |
6ba71a71 | 418 | |
6db6bc5a MC |
419 | size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t len, |
420 | unsigned char *p) | |
0f113f3e | 421 | { |
28ba2541 | 422 | int ret; |
6e59a892 | 423 | EVP_MD_CTX *ctx = NULL; |
0f113f3e | 424 | |
d4d2f3a4 MC |
425 | if (!ssl3_digest_cached_records(s, 0)) { |
426 | /* SSLfatal() already called */ | |
124037fd | 427 | return 0; |
d4d2f3a4 | 428 | } |
0f113f3e | 429 | |
28ba2541 | 430 | if (EVP_MD_CTX_type(s->s3->handshake_dgst) != NID_md5_sha1) { |
d4d2f3a4 MC |
431 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
432 | SSL_R_NO_REQUIRED_DIGEST); | |
0f113f3e MC |
433 | return 0; |
434 | } | |
28ba2541 | 435 | |
bfb0641f | 436 | ctx = EVP_MD_CTX_new(); |
6e59a892 | 437 | if (ctx == NULL) { |
d4d2f3a4 MC |
438 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
439 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
440 | return 0; |
441 | } | |
d356dc56 | 442 | if (!EVP_MD_CTX_copy_ex(ctx, s->s3->handshake_dgst)) { |
d4d2f3a4 MC |
443 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
444 | ERR_R_INTERNAL_ERROR); | |
7d0effea AP |
445 | ret = 0; |
446 | goto err; | |
d356dc56 | 447 | } |
28ba2541 | 448 | |
6e59a892 | 449 | ret = EVP_MD_CTX_size(ctx); |
28ba2541 | 450 | if (ret < 0) { |
d4d2f3a4 MC |
451 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
452 | ERR_R_INTERNAL_ERROR); | |
7d0effea AP |
453 | ret = 0; |
454 | goto err; | |
28ba2541 | 455 | } |
0f113f3e | 456 | |
6e59a892 | 457 | if ((sender != NULL && EVP_DigestUpdate(ctx, sender, len) <= 0) |
a230b26e | 458 | || EVP_MD_CTX_ctrl(ctx, EVP_CTRL_SSL3_MASTER_SECRET, |
348240c6 | 459 | (int)s->session->master_key_length, |
a230b26e EK |
460 | s->session->master_key) <= 0 |
461 | || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) { | |
d4d2f3a4 MC |
462 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
463 | ERR_R_INTERNAL_ERROR); | |
5f3d93e4 MC |
464 | ret = 0; |
465 | } | |
0f113f3e | 466 | |
7d0effea | 467 | err: |
bfb0641f | 468 | EVP_MD_CTX_free(ctx); |
0f113f3e | 469 | |
28ba2541 | 470 | return ret; |
0f113f3e | 471 | } |
d02b48c6 | 472 | |
6b691a5c | 473 | int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, |
8c1a5343 | 474 | size_t len, size_t *secret_size) |
0f113f3e MC |
475 | { |
476 | static const unsigned char *salt[3] = { | |
ca570cfd | 477 | #ifndef CHARSET_EBCDIC |
0f113f3e MC |
478 | (const unsigned char *)"A", |
479 | (const unsigned char *)"BB", | |
480 | (const unsigned char *)"CCC", | |
ca570cfd | 481 | #else |
0f113f3e MC |
482 | (const unsigned char *)"\x41", |
483 | (const unsigned char *)"\x42\x42", | |
484 | (const unsigned char *)"\x43\x43\x43", | |
ca570cfd | 485 | #endif |
0f113f3e MC |
486 | }; |
487 | unsigned char buf[EVP_MAX_MD_SIZE]; | |
bfb0641f | 488 | EVP_MD_CTX *ctx = EVP_MD_CTX_new(); |
8c1a5343 | 489 | int i, ret = 1; |
0f113f3e | 490 | unsigned int n; |
8c1a5343 | 491 | size_t ret_secret_size = 0; |
d02b48c6 | 492 | |
6e59a892 | 493 | if (ctx == NULL) { |
f63a17d6 MC |
494 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_MASTER_SECRET, |
495 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
496 | return 0; |
497 | } | |
0f113f3e | 498 | for (i = 0; i < 3; i++) { |
6e59a892 | 499 | if (EVP_DigestInit_ex(ctx, s->ctx->sha1, NULL) <= 0 |
a230b26e EK |
500 | || EVP_DigestUpdate(ctx, salt[i], |
501 | strlen((const char *)salt[i])) <= 0 | |
502 | || EVP_DigestUpdate(ctx, p, len) <= 0 | |
503 | || EVP_DigestUpdate(ctx, &(s->s3->client_random[0]), | |
504 | SSL3_RANDOM_SIZE) <= 0 | |
505 | || EVP_DigestUpdate(ctx, &(s->s3->server_random[0]), | |
506 | SSL3_RANDOM_SIZE) <= 0 | |
8c1a5343 | 507 | /* TODO(size_t) : convert me */ |
a230b26e EK |
508 | || EVP_DigestFinal_ex(ctx, buf, &n) <= 0 |
509 | || EVP_DigestInit_ex(ctx, s->ctx->md5, NULL) <= 0 | |
510 | || EVP_DigestUpdate(ctx, p, len) <= 0 | |
511 | || EVP_DigestUpdate(ctx, buf, n) <= 0 | |
512 | || EVP_DigestFinal_ex(ctx, out, &n) <= 0) { | |
f63a17d6 MC |
513 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
514 | SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR); | |
5f3d93e4 MC |
515 | ret = 0; |
516 | break; | |
517 | } | |
0f113f3e | 518 | out += n; |
8c1a5343 | 519 | ret_secret_size += n; |
0f113f3e | 520 | } |
bfb0641f | 521 | EVP_MD_CTX_free(ctx); |
1cf218bc | 522 | |
e0f9bf1d | 523 | OPENSSL_cleanse(buf, sizeof(buf)); |
8c1a5343 MC |
524 | if (ret) |
525 | *secret_size = ret_secret_size; | |
526 | return ret; | |
0f113f3e | 527 | } |
d02b48c6 | 528 | |
6b691a5c | 529 | int ssl3_alert_code(int code) |
0f113f3e MC |
530 | { |
531 | switch (code) { | |
532 | case SSL_AD_CLOSE_NOTIFY: | |
26a7d938 | 533 | return SSL3_AD_CLOSE_NOTIFY; |
0f113f3e | 534 | case SSL_AD_UNEXPECTED_MESSAGE: |
26a7d938 | 535 | return SSL3_AD_UNEXPECTED_MESSAGE; |
0f113f3e | 536 | case SSL_AD_BAD_RECORD_MAC: |
26a7d938 | 537 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 538 | case SSL_AD_DECRYPTION_FAILED: |
26a7d938 | 539 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 540 | case SSL_AD_RECORD_OVERFLOW: |
26a7d938 | 541 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 542 | case SSL_AD_DECOMPRESSION_FAILURE: |
26a7d938 | 543 | return SSL3_AD_DECOMPRESSION_FAILURE; |
0f113f3e | 544 | case SSL_AD_HANDSHAKE_FAILURE: |
26a7d938 | 545 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 546 | case SSL_AD_NO_CERTIFICATE: |
26a7d938 | 547 | return SSL3_AD_NO_CERTIFICATE; |
0f113f3e | 548 | case SSL_AD_BAD_CERTIFICATE: |
26a7d938 | 549 | return SSL3_AD_BAD_CERTIFICATE; |
0f113f3e | 550 | case SSL_AD_UNSUPPORTED_CERTIFICATE: |
26a7d938 | 551 | return SSL3_AD_UNSUPPORTED_CERTIFICATE; |
0f113f3e | 552 | case SSL_AD_CERTIFICATE_REVOKED: |
26a7d938 | 553 | return SSL3_AD_CERTIFICATE_REVOKED; |
0f113f3e | 554 | case SSL_AD_CERTIFICATE_EXPIRED: |
26a7d938 | 555 | return SSL3_AD_CERTIFICATE_EXPIRED; |
0f113f3e | 556 | case SSL_AD_CERTIFICATE_UNKNOWN: |
26a7d938 | 557 | return SSL3_AD_CERTIFICATE_UNKNOWN; |
0f113f3e | 558 | case SSL_AD_ILLEGAL_PARAMETER: |
26a7d938 | 559 | return SSL3_AD_ILLEGAL_PARAMETER; |
0f113f3e | 560 | case SSL_AD_UNKNOWN_CA: |
26a7d938 | 561 | return SSL3_AD_BAD_CERTIFICATE; |
0f113f3e | 562 | case SSL_AD_ACCESS_DENIED: |
26a7d938 | 563 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 564 | case SSL_AD_DECODE_ERROR: |
26a7d938 | 565 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 566 | case SSL_AD_DECRYPT_ERROR: |
26a7d938 | 567 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 568 | case SSL_AD_EXPORT_RESTRICTION: |
26a7d938 | 569 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 570 | case SSL_AD_PROTOCOL_VERSION: |
26a7d938 | 571 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 572 | case SSL_AD_INSUFFICIENT_SECURITY: |
26a7d938 | 573 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 574 | case SSL_AD_INTERNAL_ERROR: |
26a7d938 | 575 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 576 | case SSL_AD_USER_CANCELLED: |
26a7d938 | 577 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 578 | case SSL_AD_NO_RENEGOTIATION: |
26a7d938 | 579 | return -1; /* Don't send it :-) */ |
0f113f3e | 580 | case SSL_AD_UNSUPPORTED_EXTENSION: |
26a7d938 | 581 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 582 | case SSL_AD_CERTIFICATE_UNOBTAINABLE: |
26a7d938 | 583 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 584 | case SSL_AD_UNRECOGNIZED_NAME: |
26a7d938 | 585 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 586 | case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: |
26a7d938 | 587 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 588 | case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: |
26a7d938 | 589 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 590 | case SSL_AD_UNKNOWN_PSK_IDENTITY: |
26a7d938 | 591 | return TLS1_AD_UNKNOWN_PSK_IDENTITY; |
0f113f3e | 592 | case SSL_AD_INAPPROPRIATE_FALLBACK: |
26a7d938 | 593 | return TLS1_AD_INAPPROPRIATE_FALLBACK; |
06217867 | 594 | case SSL_AD_NO_APPLICATION_PROTOCOL: |
26a7d938 | 595 | return TLS1_AD_NO_APPLICATION_PROTOCOL; |
42c28b63 MC |
596 | case SSL_AD_CERTIFICATE_REQUIRED: |
597 | return SSL_AD_HANDSHAKE_FAILURE; | |
0f113f3e | 598 | default: |
26a7d938 | 599 | return -1; |
0f113f3e MC |
600 | } |
601 | } |