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Commit | Line | Data |
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846e33c7 RS |
1 | /* |
2 | * Copyright 1995-2016 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, | |
150 | SSL_R_COMPRESSION_LIBRARY_ERROR); | |
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 { | |
f63a17d6 | 158 | if (s->enc_write_ctx != NULL) { |
0f113f3e | 159 | reuse_dd = 1; |
f63a17d6 MC |
160 | } else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) { |
161 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
162 | ERR_R_MALLOC_FAILURE); | |
0f113f3e | 163 | goto err; |
f63a17d6 | 164 | } else { |
0f113f3e | 165 | /* |
8483a003 | 166 | * make sure it's initialised in case we exit later with an error |
0f113f3e | 167 | */ |
846ec07d | 168 | EVP_CIPHER_CTX_reset(s->enc_write_ctx); |
f63a17d6 | 169 | } |
0f113f3e | 170 | dd = s->enc_write_ctx; |
5f3d93e4 | 171 | if (ssl_replace_hash(&s->write_hash, m) == NULL) { |
f63a17d6 MC |
172 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
173 | ERR_R_MALLOC_FAILURE); | |
174 | goto err; | |
69f68237 | 175 | } |
09b6c2ef | 176 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 177 | /* COMPRESS */ |
efa7dd64 RS |
178 | COMP_CTX_free(s->compress); |
179 | s->compress = NULL; | |
0f113f3e MC |
180 | if (comp != NULL) { |
181 | s->compress = COMP_CTX_new(comp); | |
182 | if (s->compress == NULL) { | |
f63a17d6 MC |
183 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
184 | SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
185 | SSL_R_COMPRESSION_LIBRARY_ERROR); | |
186 | goto err; | |
0f113f3e MC |
187 | } |
188 | } | |
09b6c2ef | 189 | #endif |
de07f311 | 190 | RECORD_LAYER_reset_write_sequence(&s->rlayer); |
0f113f3e MC |
191 | mac_secret = &(s->s3->write_mac_secret[0]); |
192 | } | |
193 | ||
194 | if (reuse_dd) | |
846ec07d | 195 | EVP_CIPHER_CTX_reset(dd); |
0f113f3e MC |
196 | |
197 | p = s->s3->tmp.key_block; | |
8c1a5343 | 198 | mdi = EVP_MD_size(m); |
f63a17d6 MC |
199 | if (mdi < 0) { |
200 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
201 | ERR_R_INTERNAL_ERROR); | |
202 | goto err; | |
203 | } | |
8c1a5343 | 204 | i = mdi; |
0f113f3e | 205 | cl = EVP_CIPHER_key_length(c); |
361a1191 | 206 | j = cl; |
0f113f3e MC |
207 | k = EVP_CIPHER_iv_length(c); |
208 | if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || | |
209 | (which == SSL3_CHANGE_CIPHER_SERVER_READ)) { | |
210 | ms = &(p[0]); | |
211 | n = i + i; | |
212 | key = &(p[n]); | |
213 | n += j + j; | |
214 | iv = &(p[n]); | |
215 | n += k + k; | |
0f113f3e MC |
216 | } else { |
217 | n = i; | |
218 | ms = &(p[n]); | |
219 | n += i + j; | |
220 | key = &(p[n]); | |
221 | n += j + k; | |
222 | iv = &(p[n]); | |
223 | n += k; | |
0f113f3e MC |
224 | } |
225 | ||
226 | if (n > s->s3->tmp.key_block_length) { | |
f63a17d6 MC |
227 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
228 | ERR_R_INTERNAL_ERROR); | |
229 | goto err; | |
0f113f3e MC |
230 | } |
231 | ||
0f113f3e | 232 | memcpy(mac_secret, ms, i); |
0f113f3e | 233 | |
f63a17d6 MC |
234 | if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) { |
235 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
236 | ERR_R_INTERNAL_ERROR); | |
237 | goto err; | |
238 | } | |
58964a49 | 239 | |
e0f9bf1d RS |
240 | OPENSSL_cleanse(exp_key, sizeof(exp_key)); |
241 | OPENSSL_cleanse(exp_iv, sizeof(exp_iv)); | |
208fb891 | 242 | return 1; |
0f113f3e | 243 | err: |
e0f9bf1d RS |
244 | OPENSSL_cleanse(exp_key, sizeof(exp_key)); |
245 | OPENSSL_cleanse(exp_iv, sizeof(exp_iv)); | |
26a7d938 | 246 | return 0; |
0f113f3e | 247 | } |
d02b48c6 | 248 | |
6b691a5c | 249 | int ssl3_setup_key_block(SSL *s) |
0f113f3e MC |
250 | { |
251 | unsigned char *p; | |
252 | const EVP_CIPHER *c; | |
253 | const EVP_MD *hash; | |
254 | int num; | |
255 | int ret = 0; | |
256 | SSL_COMP *comp; | |
257 | ||
258 | if (s->s3->tmp.key_block_length != 0) | |
208fb891 | 259 | return 1; |
0f113f3e MC |
260 | |
261 | if (!ssl_cipher_get_evp(s->session, &c, &hash, NULL, NULL, &comp, 0)) { | |
f63a17d6 MC |
262 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, |
263 | SSL_R_CIPHER_OR_HASH_UNAVAILABLE); | |
26a7d938 | 264 | return 0; |
0f113f3e MC |
265 | } |
266 | ||
267 | s->s3->tmp.new_sym_enc = c; | |
268 | s->s3->tmp.new_hash = hash; | |
09b6c2ef | 269 | #ifdef OPENSSL_NO_COMP |
0f113f3e | 270 | s->s3->tmp.new_compression = NULL; |
09b6c2ef | 271 | #else |
0f113f3e | 272 | s->s3->tmp.new_compression = comp; |
09b6c2ef | 273 | #endif |
d02b48c6 | 274 | |
0f113f3e MC |
275 | num = EVP_MD_size(hash); |
276 | if (num < 0) | |
277 | return 0; | |
278 | ||
279 | num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c); | |
280 | num *= 2; | |
0eab41fb | 281 | |
0f113f3e | 282 | ssl3_cleanup_key_block(s); |
d02b48c6 | 283 | |
f63a17d6 MC |
284 | if ((p = OPENSSL_malloc(num)) == NULL) { |
285 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, | |
286 | ERR_R_MALLOC_FAILURE); | |
287 | return 0; | |
288 | } | |
d02b48c6 | 289 | |
0f113f3e MC |
290 | s->s3->tmp.key_block_length = num; |
291 | s->s3->tmp.key_block = p; | |
d02b48c6 | 292 | |
d4d2f3a4 | 293 | /* Calls SSLfatal() as required */ |
0f113f3e | 294 | ret = ssl3_generate_key_block(s, p, num); |
d02b48c6 | 295 | |
0f113f3e MC |
296 | if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) { |
297 | /* | |
298 | * enable vulnerability countermeasure for CBC ciphers with known-IV | |
299 | * problem (http://www.openssl.org/~bodo/tls-cbc.txt) | |
300 | */ | |
301 | s->s3->need_empty_fragments = 1; | |
82b0bf0b | 302 | |
0f113f3e MC |
303 | if (s->session->cipher != NULL) { |
304 | if (s->session->cipher->algorithm_enc == SSL_eNULL) | |
305 | s->s3->need_empty_fragments = 0; | |
c21506ba | 306 | |
82b0bf0b | 307 | #ifndef OPENSSL_NO_RC4 |
0f113f3e MC |
308 | if (s->session->cipher->algorithm_enc == SSL_RC4) |
309 | s->s3->need_empty_fragments = 0; | |
82b0bf0b | 310 | #endif |
0f113f3e MC |
311 | } |
312 | } | |
d02b48c6 | 313 | |
0f113f3e | 314 | return ret; |
0f113f3e | 315 | } |
d02b48c6 | 316 | |
6b691a5c | 317 | void ssl3_cleanup_key_block(SSL *s) |
0f113f3e | 318 | { |
4b45c6e5 RS |
319 | OPENSSL_clear_free(s->s3->tmp.key_block, s->s3->tmp.key_block_length); |
320 | s->s3->tmp.key_block = NULL; | |
0f113f3e MC |
321 | s->s3->tmp.key_block_length = 0; |
322 | } | |
d02b48c6 | 323 | |
2c4a056f | 324 | int ssl3_init_finished_mac(SSL *s) |
0f113f3e | 325 | { |
2c4a056f MC |
326 | BIO *buf = BIO_new(BIO_s_mem()); |
327 | ||
328 | if (buf == NULL) { | |
4752c5de MC |
329 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_INIT_FINISHED_MAC, |
330 | ERR_R_MALLOC_FAILURE); | |
2c4a056f MC |
331 | return 0; |
332 | } | |
85fb6fda | 333 | ssl3_free_digest_list(s); |
2c4a056f | 334 | s->s3->handshake_buffer = buf; |
0f113f3e | 335 | (void)BIO_set_close(s->s3->handshake_buffer, BIO_CLOSE); |
2c4a056f | 336 | return 1; |
0f113f3e MC |
337 | } |
338 | ||
c7238204 DSH |
339 | /* |
340 | * Free digest list. Also frees handshake buffer since they are always freed | |
341 | * together. | |
342 | */ | |
343 | ||
0f113f3e MC |
344 | void ssl3_free_digest_list(SSL *s) |
345 | { | |
c7238204 DSH |
346 | BIO_free(s->s3->handshake_buffer); |
347 | s->s3->handshake_buffer = NULL; | |
bfb0641f | 348 | EVP_MD_CTX_free(s->s3->handshake_dgst); |
0f113f3e MC |
349 | s->s3->handshake_dgst = NULL; |
350 | } | |
81025661 | 351 | |
7ee8627f | 352 | int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len) |
0f113f3e | 353 | { |
f63a17d6 MC |
354 | int ret; |
355 | ||
7ee8627f | 356 | if (s->s3->handshake_dgst == NULL) { |
d166ed8c | 357 | /* Note: this writes to a memory BIO so a failure is a fatal error */ |
f63a17d6 MC |
358 | if (len > INT_MAX) { |
359 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
360 | SSL_R_OVERFLOW_ERROR); | |
7ee8627f | 361 | return 0; |
f63a17d6 | 362 | } |
7ee8627f | 363 | ret = BIO_write(s->s3->handshake_buffer, (void *)buf, (int)len); |
f63a17d6 MC |
364 | if (ret <= 0 || ret != (int)len) { |
365 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
366 | ERR_R_INTERNAL_ERROR); | |
367 | return 0; | |
368 | } | |
7ee8627f | 369 | } else { |
f63a17d6 MC |
370 | ret = EVP_DigestUpdate(s->s3->handshake_dgst, buf, len); |
371 | if (!ret) { | |
372 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
373 | ERR_R_INTERNAL_ERROR); | |
374 | return 0; | |
375 | } | |
7ee8627f | 376 | } |
f63a17d6 | 377 | return 1; |
0f113f3e | 378 | } |
6ba71a71 | 379 | |
124037fd | 380 | int ssl3_digest_cached_records(SSL *s, int keep) |
0f113f3e | 381 | { |
0f113f3e MC |
382 | const EVP_MD *md; |
383 | long hdatalen; | |
384 | void *hdata; | |
385 | ||
0f113f3e | 386 | if (s->s3->handshake_dgst == NULL) { |
124037fd DSH |
387 | hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, &hdata); |
388 | if (hdatalen <= 0) { | |
f63a17d6 MC |
389 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
390 | SSL_R_BAD_HANDSHAKE_LENGTH); | |
124037fd DSH |
391 | return 0; |
392 | } | |
0f113f3e | 393 | |
bfb0641f | 394 | s->s3->handshake_dgst = EVP_MD_CTX_new(); |
28ba2541 | 395 | if (s->s3->handshake_dgst == NULL) { |
f63a17d6 MC |
396 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
397 | ERR_R_MALLOC_FAILURE); | |
28ba2541 DSH |
398 | return 0; |
399 | } | |
400 | ||
401 | md = ssl_handshake_md(s); | |
a230b26e EK |
402 | if (md == NULL || !EVP_DigestInit_ex(s->s3->handshake_dgst, md, NULL) |
403 | || !EVP_DigestUpdate(s->s3->handshake_dgst, hdata, hdatalen)) { | |
f63a17d6 MC |
404 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
405 | ERR_R_INTERNAL_ERROR); | |
28ba2541 | 406 | return 0; |
0f113f3e MC |
407 | } |
408 | } | |
124037fd | 409 | if (keep == 0) { |
0f113f3e MC |
410 | BIO_free(s->s3->handshake_buffer); |
411 | s->s3->handshake_buffer = NULL; | |
412 | } | |
413 | ||
414 | return 1; | |
415 | } | |
6ba71a71 | 416 | |
6db6bc5a MC |
417 | size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t len, |
418 | unsigned char *p) | |
0f113f3e | 419 | { |
28ba2541 | 420 | int ret; |
6e59a892 | 421 | EVP_MD_CTX *ctx = NULL; |
0f113f3e | 422 | |
d4d2f3a4 MC |
423 | if (!ssl3_digest_cached_records(s, 0)) { |
424 | /* SSLfatal() already called */ | |
124037fd | 425 | return 0; |
d4d2f3a4 | 426 | } |
0f113f3e | 427 | |
28ba2541 | 428 | if (EVP_MD_CTX_type(s->s3->handshake_dgst) != NID_md5_sha1) { |
d4d2f3a4 MC |
429 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
430 | SSL_R_NO_REQUIRED_DIGEST); | |
0f113f3e MC |
431 | return 0; |
432 | } | |
28ba2541 | 433 | |
bfb0641f | 434 | ctx = EVP_MD_CTX_new(); |
6e59a892 | 435 | if (ctx == NULL) { |
d4d2f3a4 MC |
436 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
437 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
438 | return 0; |
439 | } | |
d356dc56 | 440 | if (!EVP_MD_CTX_copy_ex(ctx, s->s3->handshake_dgst)) { |
d4d2f3a4 MC |
441 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
442 | ERR_R_INTERNAL_ERROR); | |
d356dc56 MC |
443 | return 0; |
444 | } | |
28ba2541 | 445 | |
6e59a892 | 446 | ret = EVP_MD_CTX_size(ctx); |
28ba2541 | 447 | if (ret < 0) { |
d4d2f3a4 MC |
448 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
449 | ERR_R_INTERNAL_ERROR); | |
bfb0641f | 450 | EVP_MD_CTX_reset(ctx); |
0f113f3e | 451 | return 0; |
28ba2541 | 452 | } |
0f113f3e | 453 | |
6e59a892 | 454 | if ((sender != NULL && EVP_DigestUpdate(ctx, sender, len) <= 0) |
a230b26e | 455 | || EVP_MD_CTX_ctrl(ctx, EVP_CTRL_SSL3_MASTER_SECRET, |
348240c6 | 456 | (int)s->session->master_key_length, |
a230b26e EK |
457 | s->session->master_key) <= 0 |
458 | || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) { | |
d4d2f3a4 MC |
459 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
460 | ERR_R_INTERNAL_ERROR); | |
5f3d93e4 MC |
461 | ret = 0; |
462 | } | |
0f113f3e | 463 | |
bfb0641f | 464 | EVP_MD_CTX_free(ctx); |
0f113f3e | 465 | |
28ba2541 | 466 | return ret; |
0f113f3e | 467 | } |
d02b48c6 | 468 | |
6b691a5c | 469 | int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, |
8c1a5343 | 470 | size_t len, size_t *secret_size) |
0f113f3e MC |
471 | { |
472 | static const unsigned char *salt[3] = { | |
ca570cfd | 473 | #ifndef CHARSET_EBCDIC |
0f113f3e MC |
474 | (const unsigned char *)"A", |
475 | (const unsigned char *)"BB", | |
476 | (const unsigned char *)"CCC", | |
ca570cfd | 477 | #else |
0f113f3e MC |
478 | (const unsigned char *)"\x41", |
479 | (const unsigned char *)"\x42\x42", | |
480 | (const unsigned char *)"\x43\x43\x43", | |
ca570cfd | 481 | #endif |
0f113f3e MC |
482 | }; |
483 | unsigned char buf[EVP_MAX_MD_SIZE]; | |
bfb0641f | 484 | EVP_MD_CTX *ctx = EVP_MD_CTX_new(); |
8c1a5343 | 485 | int i, ret = 1; |
0f113f3e | 486 | unsigned int n; |
8c1a5343 | 487 | size_t ret_secret_size = 0; |
d02b48c6 | 488 | |
6e59a892 | 489 | if (ctx == NULL) { |
f63a17d6 MC |
490 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_MASTER_SECRET, |
491 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
492 | return 0; |
493 | } | |
0f113f3e | 494 | for (i = 0; i < 3; i++) { |
6e59a892 | 495 | if (EVP_DigestInit_ex(ctx, s->ctx->sha1, NULL) <= 0 |
a230b26e EK |
496 | || EVP_DigestUpdate(ctx, salt[i], |
497 | strlen((const char *)salt[i])) <= 0 | |
498 | || EVP_DigestUpdate(ctx, p, len) <= 0 | |
499 | || EVP_DigestUpdate(ctx, &(s->s3->client_random[0]), | |
500 | SSL3_RANDOM_SIZE) <= 0 | |
501 | || EVP_DigestUpdate(ctx, &(s->s3->server_random[0]), | |
502 | SSL3_RANDOM_SIZE) <= 0 | |
8c1a5343 | 503 | /* TODO(size_t) : convert me */ |
a230b26e EK |
504 | || EVP_DigestFinal_ex(ctx, buf, &n) <= 0 |
505 | || EVP_DigestInit_ex(ctx, s->ctx->md5, NULL) <= 0 | |
506 | || EVP_DigestUpdate(ctx, p, len) <= 0 | |
507 | || EVP_DigestUpdate(ctx, buf, n) <= 0 | |
508 | || EVP_DigestFinal_ex(ctx, out, &n) <= 0) { | |
f63a17d6 MC |
509 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
510 | SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR); | |
5f3d93e4 MC |
511 | ret = 0; |
512 | break; | |
513 | } | |
0f113f3e | 514 | out += n; |
8c1a5343 | 515 | ret_secret_size += n; |
0f113f3e | 516 | } |
bfb0641f | 517 | EVP_MD_CTX_free(ctx); |
1cf218bc | 518 | |
e0f9bf1d | 519 | OPENSSL_cleanse(buf, sizeof(buf)); |
8c1a5343 MC |
520 | if (ret) |
521 | *secret_size = ret_secret_size; | |
522 | return ret; | |
0f113f3e | 523 | } |
d02b48c6 | 524 | |
6b691a5c | 525 | int ssl3_alert_code(int code) |
0f113f3e MC |
526 | { |
527 | switch (code) { | |
528 | case SSL_AD_CLOSE_NOTIFY: | |
26a7d938 | 529 | return SSL3_AD_CLOSE_NOTIFY; |
0f113f3e | 530 | case SSL_AD_UNEXPECTED_MESSAGE: |
26a7d938 | 531 | return SSL3_AD_UNEXPECTED_MESSAGE; |
0f113f3e | 532 | case SSL_AD_BAD_RECORD_MAC: |
26a7d938 | 533 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 534 | case SSL_AD_DECRYPTION_FAILED: |
26a7d938 | 535 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 536 | case SSL_AD_RECORD_OVERFLOW: |
26a7d938 | 537 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 538 | case SSL_AD_DECOMPRESSION_FAILURE: |
26a7d938 | 539 | return SSL3_AD_DECOMPRESSION_FAILURE; |
0f113f3e | 540 | case SSL_AD_HANDSHAKE_FAILURE: |
26a7d938 | 541 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 542 | case SSL_AD_NO_CERTIFICATE: |
26a7d938 | 543 | return SSL3_AD_NO_CERTIFICATE; |
0f113f3e | 544 | case SSL_AD_BAD_CERTIFICATE: |
26a7d938 | 545 | return SSL3_AD_BAD_CERTIFICATE; |
0f113f3e | 546 | case SSL_AD_UNSUPPORTED_CERTIFICATE: |
26a7d938 | 547 | return SSL3_AD_UNSUPPORTED_CERTIFICATE; |
0f113f3e | 548 | case SSL_AD_CERTIFICATE_REVOKED: |
26a7d938 | 549 | return SSL3_AD_CERTIFICATE_REVOKED; |
0f113f3e | 550 | case SSL_AD_CERTIFICATE_EXPIRED: |
26a7d938 | 551 | return SSL3_AD_CERTIFICATE_EXPIRED; |
0f113f3e | 552 | case SSL_AD_CERTIFICATE_UNKNOWN: |
26a7d938 | 553 | return SSL3_AD_CERTIFICATE_UNKNOWN; |
0f113f3e | 554 | case SSL_AD_ILLEGAL_PARAMETER: |
26a7d938 | 555 | return SSL3_AD_ILLEGAL_PARAMETER; |
0f113f3e | 556 | case SSL_AD_UNKNOWN_CA: |
26a7d938 | 557 | return SSL3_AD_BAD_CERTIFICATE; |
0f113f3e | 558 | case SSL_AD_ACCESS_DENIED: |
26a7d938 | 559 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 560 | case SSL_AD_DECODE_ERROR: |
26a7d938 | 561 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 562 | case SSL_AD_DECRYPT_ERROR: |
26a7d938 | 563 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 564 | case SSL_AD_EXPORT_RESTRICTION: |
26a7d938 | 565 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 566 | case SSL_AD_PROTOCOL_VERSION: |
26a7d938 | 567 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 568 | case SSL_AD_INSUFFICIENT_SECURITY: |
26a7d938 | 569 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 570 | case SSL_AD_INTERNAL_ERROR: |
26a7d938 | 571 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 572 | case SSL_AD_USER_CANCELLED: |
26a7d938 | 573 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 574 | case SSL_AD_NO_RENEGOTIATION: |
26a7d938 | 575 | return -1; /* Don't send it :-) */ |
0f113f3e | 576 | case SSL_AD_UNSUPPORTED_EXTENSION: |
26a7d938 | 577 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 578 | case SSL_AD_CERTIFICATE_UNOBTAINABLE: |
26a7d938 | 579 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 580 | case SSL_AD_UNRECOGNIZED_NAME: |
26a7d938 | 581 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 582 | case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: |
26a7d938 | 583 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 584 | case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: |
26a7d938 | 585 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 586 | case SSL_AD_UNKNOWN_PSK_IDENTITY: |
26a7d938 | 587 | return TLS1_AD_UNKNOWN_PSK_IDENTITY; |
0f113f3e | 588 | case SSL_AD_INAPPROPRIATE_FALLBACK: |
26a7d938 | 589 | return TLS1_AD_INAPPROPRIATE_FALLBACK; |
06217867 | 590 | case SSL_AD_NO_APPLICATION_PROTOCOL: |
26a7d938 | 591 | return TLS1_AD_NO_APPLICATION_PROTOCOL; |
42c28b63 MC |
592 | case SSL_AD_CERTIFICATE_REQUIRED: |
593 | return SSL_AD_HANDSHAKE_FAILURE; | |
0f113f3e | 594 | default: |
26a7d938 | 595 | return -1; |
0f113f3e MC |
596 | } |
597 | } |