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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 | * |
2c18d164 | 5 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
846e33c7 RS |
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) | |
555cbb32 TS |
54 | || !EVP_DigestUpdate(s1, s->s3.server_random, SSL3_RANDOM_SIZE) |
55 | || !EVP_DigestUpdate(s1, s->s3.client_random, SSL3_RANDOM_SIZE) | |
d166ed8c DSH |
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; | |
361a1191 | 93 | unsigned char *ms, *key, *iv; |
0f113f3e MC |
94 | EVP_CIPHER_CTX *dd; |
95 | const EVP_CIPHER *c; | |
09b6c2ef | 96 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 97 | COMP_METHOD *comp; |
09b6c2ef | 98 | #endif |
0f113f3e | 99 | const EVP_MD *m; |
8c1a5343 MC |
100 | int mdi; |
101 | size_t n, i, j, k, cl; | |
0f113f3e MC |
102 | int reuse_dd = 0; |
103 | ||
555cbb32 TS |
104 | c = s->s3.tmp.new_sym_enc; |
105 | m = s->s3.tmp.new_hash; | |
0f113f3e | 106 | /* m == NULL will lead to a crash later */ |
380a522f | 107 | if (!ossl_assert(m != NULL)) { |
f63a17d6 MC |
108 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
109 | ERR_R_INTERNAL_ERROR); | |
110 | goto err; | |
380a522f | 111 | } |
09b6c2ef | 112 | #ifndef OPENSSL_NO_COMP |
555cbb32 | 113 | if (s->s3.tmp.new_compression == NULL) |
0f113f3e MC |
114 | comp = NULL; |
115 | else | |
555cbb32 | 116 | comp = s->s3.tmp.new_compression->method; |
09b6c2ef | 117 | #endif |
d02b48c6 | 118 | |
0f113f3e | 119 | if (which & SSL3_CC_READ) { |
f63a17d6 | 120 | if (s->enc_read_ctx != NULL) { |
0f113f3e | 121 | reuse_dd = 1; |
f63a17d6 MC |
122 | } else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) { |
123 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
124 | ERR_R_MALLOC_FAILURE); | |
0f113f3e | 125 | goto err; |
f63a17d6 | 126 | } else { |
0f113f3e | 127 | /* |
8483a003 | 128 | * make sure it's initialised in case we exit later with an error |
0f113f3e | 129 | */ |
846ec07d | 130 | EVP_CIPHER_CTX_reset(s->enc_read_ctx); |
f63a17d6 | 131 | } |
0f113f3e MC |
132 | dd = s->enc_read_ctx; |
133 | ||
5f3d93e4 | 134 | if (ssl_replace_hash(&s->read_hash, m) == NULL) { |
f63a17d6 MC |
135 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
136 | ERR_R_INTERNAL_ERROR); | |
137 | goto err; | |
69f68237 | 138 | } |
09b6c2ef | 139 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 140 | /* COMPRESS */ |
efa7dd64 RS |
141 | COMP_CTX_free(s->expand); |
142 | s->expand = NULL; | |
0f113f3e MC |
143 | if (comp != NULL) { |
144 | s->expand = COMP_CTX_new(comp); | |
145 | if (s->expand == NULL) { | |
f63a17d6 MC |
146 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
147 | SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
dd5a4279 | 148 | SSL_R_COMPRESSION_LIBRARY_ERROR); |
f63a17d6 | 149 | goto err; |
0f113f3e | 150 | } |
0f113f3e | 151 | } |
09b6c2ef | 152 | #endif |
de07f311 | 153 | RECORD_LAYER_reset_read_sequence(&s->rlayer); |
555cbb32 | 154 | mac_secret = &(s->s3.read_mac_secret[0]); |
0f113f3e | 155 | } else { |
7426cd34 | 156 | s->statem.enc_write_state = ENC_WRITE_STATE_INVALID; |
f63a17d6 | 157 | if (s->enc_write_ctx != NULL) { |
0f113f3e | 158 | reuse_dd = 1; |
f63a17d6 MC |
159 | } else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) { |
160 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
161 | ERR_R_MALLOC_FAILURE); | |
0f113f3e | 162 | goto err; |
f63a17d6 | 163 | } else { |
0f113f3e | 164 | /* |
8483a003 | 165 | * make sure it's initialised in case we exit later with an error |
0f113f3e | 166 | */ |
846ec07d | 167 | EVP_CIPHER_CTX_reset(s->enc_write_ctx); |
f63a17d6 | 168 | } |
0f113f3e | 169 | dd = s->enc_write_ctx; |
5f3d93e4 | 170 | if (ssl_replace_hash(&s->write_hash, m) == NULL) { |
f63a17d6 MC |
171 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
172 | ERR_R_MALLOC_FAILURE); | |
173 | goto err; | |
69f68237 | 174 | } |
09b6c2ef | 175 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 176 | /* COMPRESS */ |
efa7dd64 RS |
177 | COMP_CTX_free(s->compress); |
178 | s->compress = NULL; | |
0f113f3e MC |
179 | if (comp != NULL) { |
180 | s->compress = COMP_CTX_new(comp); | |
181 | if (s->compress == NULL) { | |
f63a17d6 MC |
182 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
183 | SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
184 | SSL_R_COMPRESSION_LIBRARY_ERROR); | |
185 | goto err; | |
0f113f3e MC |
186 | } |
187 | } | |
09b6c2ef | 188 | #endif |
de07f311 | 189 | RECORD_LAYER_reset_write_sequence(&s->rlayer); |
555cbb32 | 190 | mac_secret = &(s->s3.write_mac_secret[0]); |
0f113f3e MC |
191 | } |
192 | ||
193 | if (reuse_dd) | |
846ec07d | 194 | EVP_CIPHER_CTX_reset(dd); |
0f113f3e | 195 | |
555cbb32 | 196 | p = s->s3.tmp.key_block; |
8c1a5343 | 197 | mdi = EVP_MD_size(m); |
f63a17d6 MC |
198 | if (mdi < 0) { |
199 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
200 | ERR_R_INTERNAL_ERROR); | |
201 | goto err; | |
202 | } | |
8c1a5343 | 203 | i = mdi; |
0f113f3e | 204 | cl = EVP_CIPHER_key_length(c); |
361a1191 | 205 | j = cl; |
0f113f3e MC |
206 | k = EVP_CIPHER_iv_length(c); |
207 | if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || | |
208 | (which == SSL3_CHANGE_CIPHER_SERVER_READ)) { | |
209 | ms = &(p[0]); | |
210 | n = i + i; | |
211 | key = &(p[n]); | |
212 | n += j + j; | |
213 | iv = &(p[n]); | |
214 | n += k + k; | |
0f113f3e MC |
215 | } else { |
216 | n = i; | |
217 | ms = &(p[n]); | |
218 | n += i + j; | |
219 | key = &(p[n]); | |
220 | n += j + k; | |
221 | iv = &(p[n]); | |
222 | n += k; | |
0f113f3e MC |
223 | } |
224 | ||
555cbb32 | 225 | if (n > s->s3.tmp.key_block_length) { |
f63a17d6 MC |
226 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
227 | ERR_R_INTERNAL_ERROR); | |
228 | goto err; | |
0f113f3e MC |
229 | } |
230 | ||
0f113f3e | 231 | memcpy(mac_secret, ms, i); |
0f113f3e | 232 | |
f63a17d6 MC |
233 | if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) { |
234 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
235 | ERR_R_INTERNAL_ERROR); | |
236 | goto err; | |
237 | } | |
58964a49 | 238 | |
7426cd34 | 239 | s->statem.enc_write_state = ENC_WRITE_STATE_VALID; |
208fb891 | 240 | return 1; |
0f113f3e | 241 | err: |
26a7d938 | 242 | return 0; |
0f113f3e | 243 | } |
d02b48c6 | 244 | |
6b691a5c | 245 | int ssl3_setup_key_block(SSL *s) |
0f113f3e MC |
246 | { |
247 | unsigned char *p; | |
248 | const EVP_CIPHER *c; | |
249 | const EVP_MD *hash; | |
250 | int num; | |
251 | int ret = 0; | |
252 | SSL_COMP *comp; | |
253 | ||
555cbb32 | 254 | if (s->s3.tmp.key_block_length != 0) |
208fb891 | 255 | return 1; |
0f113f3e MC |
256 | |
257 | if (!ssl_cipher_get_evp(s->session, &c, &hash, NULL, NULL, &comp, 0)) { | |
f63a17d6 MC |
258 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, |
259 | SSL_R_CIPHER_OR_HASH_UNAVAILABLE); | |
26a7d938 | 260 | return 0; |
0f113f3e MC |
261 | } |
262 | ||
555cbb32 TS |
263 | s->s3.tmp.new_sym_enc = c; |
264 | s->s3.tmp.new_hash = hash; | |
09b6c2ef | 265 | #ifdef OPENSSL_NO_COMP |
555cbb32 | 266 | s->s3.tmp.new_compression = NULL; |
09b6c2ef | 267 | #else |
555cbb32 | 268 | s->s3.tmp.new_compression = comp; |
09b6c2ef | 269 | #endif |
d02b48c6 | 270 | |
0f113f3e MC |
271 | num = EVP_MD_size(hash); |
272 | if (num < 0) | |
273 | return 0; | |
274 | ||
275 | num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c); | |
276 | num *= 2; | |
0eab41fb | 277 | |
0f113f3e | 278 | ssl3_cleanup_key_block(s); |
d02b48c6 | 279 | |
f63a17d6 MC |
280 | if ((p = OPENSSL_malloc(num)) == NULL) { |
281 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, | |
282 | ERR_R_MALLOC_FAILURE); | |
283 | return 0; | |
284 | } | |
d02b48c6 | 285 | |
555cbb32 TS |
286 | s->s3.tmp.key_block_length = num; |
287 | s->s3.tmp.key_block = p; | |
d02b48c6 | 288 | |
d4d2f3a4 | 289 | /* Calls SSLfatal() as required */ |
0f113f3e | 290 | ret = ssl3_generate_key_block(s, p, num); |
d02b48c6 | 291 | |
0f113f3e MC |
292 | if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) { |
293 | /* | |
294 | * enable vulnerability countermeasure for CBC ciphers with known-IV | |
295 | * problem (http://www.openssl.org/~bodo/tls-cbc.txt) | |
296 | */ | |
555cbb32 | 297 | s->s3.need_empty_fragments = 1; |
82b0bf0b | 298 | |
0f113f3e MC |
299 | if (s->session->cipher != NULL) { |
300 | if (s->session->cipher->algorithm_enc == SSL_eNULL) | |
555cbb32 | 301 | s->s3.need_empty_fragments = 0; |
c21506ba | 302 | |
82b0bf0b | 303 | #ifndef OPENSSL_NO_RC4 |
0f113f3e | 304 | if (s->session->cipher->algorithm_enc == SSL_RC4) |
555cbb32 | 305 | s->s3.need_empty_fragments = 0; |
82b0bf0b | 306 | #endif |
0f113f3e MC |
307 | } |
308 | } | |
d02b48c6 | 309 | |
0f113f3e | 310 | return ret; |
0f113f3e | 311 | } |
d02b48c6 | 312 | |
6b691a5c | 313 | void ssl3_cleanup_key_block(SSL *s) |
0f113f3e | 314 | { |
555cbb32 TS |
315 | OPENSSL_clear_free(s->s3.tmp.key_block, s->s3.tmp.key_block_length); |
316 | s->s3.tmp.key_block = NULL; | |
317 | s->s3.tmp.key_block_length = 0; | |
0f113f3e | 318 | } |
d02b48c6 | 319 | |
2c4a056f | 320 | int ssl3_init_finished_mac(SSL *s) |
0f113f3e | 321 | { |
2c4a056f MC |
322 | BIO *buf = BIO_new(BIO_s_mem()); |
323 | ||
324 | if (buf == NULL) { | |
4752c5de MC |
325 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_INIT_FINISHED_MAC, |
326 | ERR_R_MALLOC_FAILURE); | |
2c4a056f MC |
327 | return 0; |
328 | } | |
85fb6fda | 329 | ssl3_free_digest_list(s); |
555cbb32 TS |
330 | s->s3.handshake_buffer = buf; |
331 | (void)BIO_set_close(s->s3.handshake_buffer, BIO_CLOSE); | |
2c4a056f | 332 | return 1; |
0f113f3e MC |
333 | } |
334 | ||
c7238204 DSH |
335 | /* |
336 | * Free digest list. Also frees handshake buffer since they are always freed | |
337 | * together. | |
338 | */ | |
339 | ||
0f113f3e MC |
340 | void ssl3_free_digest_list(SSL *s) |
341 | { | |
555cbb32 TS |
342 | BIO_free(s->s3.handshake_buffer); |
343 | s->s3.handshake_buffer = NULL; | |
344 | EVP_MD_CTX_free(s->s3.handshake_dgst); | |
345 | s->s3.handshake_dgst = NULL; | |
0f113f3e | 346 | } |
81025661 | 347 | |
7ee8627f | 348 | int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len) |
0f113f3e | 349 | { |
f63a17d6 MC |
350 | int ret; |
351 | ||
555cbb32 | 352 | if (s->s3.handshake_dgst == NULL) { |
d166ed8c | 353 | /* Note: this writes to a memory BIO so a failure is a fatal error */ |
f63a17d6 MC |
354 | if (len > INT_MAX) { |
355 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
356 | SSL_R_OVERFLOW_ERROR); | |
7ee8627f | 357 | return 0; |
f63a17d6 | 358 | } |
555cbb32 | 359 | ret = BIO_write(s->s3.handshake_buffer, (void *)buf, (int)len); |
f63a17d6 MC |
360 | if (ret <= 0 || ret != (int)len) { |
361 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
362 | ERR_R_INTERNAL_ERROR); | |
363 | return 0; | |
364 | } | |
7ee8627f | 365 | } else { |
555cbb32 | 366 | ret = EVP_DigestUpdate(s->s3.handshake_dgst, buf, len); |
f63a17d6 MC |
367 | if (!ret) { |
368 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
369 | ERR_R_INTERNAL_ERROR); | |
370 | return 0; | |
371 | } | |
7ee8627f | 372 | } |
f63a17d6 | 373 | return 1; |
0f113f3e | 374 | } |
6ba71a71 | 375 | |
124037fd | 376 | int ssl3_digest_cached_records(SSL *s, int keep) |
0f113f3e | 377 | { |
0f113f3e MC |
378 | const EVP_MD *md; |
379 | long hdatalen; | |
380 | void *hdata; | |
381 | ||
555cbb32 TS |
382 | if (s->s3.handshake_dgst == NULL) { |
383 | hdatalen = BIO_get_mem_data(s->s3.handshake_buffer, &hdata); | |
124037fd | 384 | if (hdatalen <= 0) { |
f63a17d6 MC |
385 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
386 | SSL_R_BAD_HANDSHAKE_LENGTH); | |
124037fd DSH |
387 | return 0; |
388 | } | |
0f113f3e | 389 | |
555cbb32 TS |
390 | s->s3.handshake_dgst = EVP_MD_CTX_new(); |
391 | if (s->s3.handshake_dgst == NULL) { | |
f63a17d6 MC |
392 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
393 | ERR_R_MALLOC_FAILURE); | |
28ba2541 DSH |
394 | return 0; |
395 | } | |
396 | ||
397 | md = ssl_handshake_md(s); | |
555cbb32 TS |
398 | if (md == NULL || !EVP_DigestInit_ex(s->s3.handshake_dgst, md, NULL) |
399 | || !EVP_DigestUpdate(s->s3.handshake_dgst, hdata, hdatalen)) { | |
f63a17d6 MC |
400 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
401 | ERR_R_INTERNAL_ERROR); | |
28ba2541 | 402 | return 0; |
0f113f3e MC |
403 | } |
404 | } | |
124037fd | 405 | if (keep == 0) { |
555cbb32 TS |
406 | BIO_free(s->s3.handshake_buffer); |
407 | s->s3.handshake_buffer = NULL; | |
0f113f3e MC |
408 | } |
409 | ||
410 | return 1; | |
411 | } | |
6ba71a71 | 412 | |
6db6bc5a MC |
413 | size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t len, |
414 | unsigned char *p) | |
0f113f3e | 415 | { |
28ba2541 | 416 | int ret; |
6e59a892 | 417 | EVP_MD_CTX *ctx = NULL; |
0f113f3e | 418 | |
d4d2f3a4 MC |
419 | if (!ssl3_digest_cached_records(s, 0)) { |
420 | /* SSLfatal() already called */ | |
124037fd | 421 | return 0; |
d4d2f3a4 | 422 | } |
0f113f3e | 423 | |
555cbb32 | 424 | if (EVP_MD_CTX_type(s->s3.handshake_dgst) != NID_md5_sha1) { |
d4d2f3a4 MC |
425 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
426 | SSL_R_NO_REQUIRED_DIGEST); | |
0f113f3e MC |
427 | return 0; |
428 | } | |
28ba2541 | 429 | |
bfb0641f | 430 | ctx = EVP_MD_CTX_new(); |
6e59a892 | 431 | if (ctx == NULL) { |
d4d2f3a4 MC |
432 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
433 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
434 | return 0; |
435 | } | |
555cbb32 | 436 | if (!EVP_MD_CTX_copy_ex(ctx, s->s3.handshake_dgst)) { |
d4d2f3a4 MC |
437 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
438 | ERR_R_INTERNAL_ERROR); | |
7d0effea AP |
439 | ret = 0; |
440 | goto err; | |
d356dc56 | 441 | } |
28ba2541 | 442 | |
6e59a892 | 443 | ret = EVP_MD_CTX_size(ctx); |
28ba2541 | 444 | if (ret < 0) { |
d4d2f3a4 MC |
445 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
446 | ERR_R_INTERNAL_ERROR); | |
7d0effea AP |
447 | ret = 0; |
448 | goto err; | |
28ba2541 | 449 | } |
0f113f3e | 450 | |
6e59a892 | 451 | if ((sender != NULL && EVP_DigestUpdate(ctx, sender, len) <= 0) |
a230b26e | 452 | || EVP_MD_CTX_ctrl(ctx, EVP_CTRL_SSL3_MASTER_SECRET, |
348240c6 | 453 | (int)s->session->master_key_length, |
a230b26e EK |
454 | s->session->master_key) <= 0 |
455 | || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) { | |
d4d2f3a4 MC |
456 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
457 | ERR_R_INTERNAL_ERROR); | |
5f3d93e4 MC |
458 | ret = 0; |
459 | } | |
0f113f3e | 460 | |
7d0effea | 461 | err: |
bfb0641f | 462 | EVP_MD_CTX_free(ctx); |
0f113f3e | 463 | |
28ba2541 | 464 | return ret; |
0f113f3e | 465 | } |
d02b48c6 | 466 | |
6b691a5c | 467 | int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, |
8c1a5343 | 468 | size_t len, size_t *secret_size) |
0f113f3e MC |
469 | { |
470 | static const unsigned char *salt[3] = { | |
ca570cfd | 471 | #ifndef CHARSET_EBCDIC |
0f113f3e MC |
472 | (const unsigned char *)"A", |
473 | (const unsigned char *)"BB", | |
474 | (const unsigned char *)"CCC", | |
ca570cfd | 475 | #else |
0f113f3e MC |
476 | (const unsigned char *)"\x41", |
477 | (const unsigned char *)"\x42\x42", | |
478 | (const unsigned char *)"\x43\x43\x43", | |
ca570cfd | 479 | #endif |
0f113f3e MC |
480 | }; |
481 | unsigned char buf[EVP_MAX_MD_SIZE]; | |
bfb0641f | 482 | EVP_MD_CTX *ctx = EVP_MD_CTX_new(); |
8c1a5343 | 483 | int i, ret = 1; |
0f113f3e | 484 | unsigned int n; |
8c1a5343 | 485 | size_t ret_secret_size = 0; |
d02b48c6 | 486 | |
6e59a892 | 487 | if (ctx == NULL) { |
f63a17d6 MC |
488 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_MASTER_SECRET, |
489 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
490 | return 0; |
491 | } | |
0f113f3e | 492 | for (i = 0; i < 3; i++) { |
6e59a892 | 493 | if (EVP_DigestInit_ex(ctx, s->ctx->sha1, NULL) <= 0 |
a230b26e EK |
494 | || EVP_DigestUpdate(ctx, salt[i], |
495 | strlen((const char *)salt[i])) <= 0 | |
496 | || EVP_DigestUpdate(ctx, p, len) <= 0 | |
555cbb32 | 497 | || EVP_DigestUpdate(ctx, &(s->s3.client_random[0]), |
a230b26e | 498 | SSL3_RANDOM_SIZE) <= 0 |
555cbb32 | 499 | || EVP_DigestUpdate(ctx, &(s->s3.server_random[0]), |
a230b26e | 500 | SSL3_RANDOM_SIZE) <= 0 |
8c1a5343 | 501 | /* TODO(size_t) : convert me */ |
a230b26e EK |
502 | || EVP_DigestFinal_ex(ctx, buf, &n) <= 0 |
503 | || EVP_DigestInit_ex(ctx, s->ctx->md5, NULL) <= 0 | |
504 | || EVP_DigestUpdate(ctx, p, len) <= 0 | |
505 | || EVP_DigestUpdate(ctx, buf, n) <= 0 | |
506 | || EVP_DigestFinal_ex(ctx, out, &n) <= 0) { | |
f63a17d6 MC |
507 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
508 | SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR); | |
5f3d93e4 MC |
509 | ret = 0; |
510 | break; | |
511 | } | |
0f113f3e | 512 | out += n; |
8c1a5343 | 513 | ret_secret_size += n; |
0f113f3e | 514 | } |
bfb0641f | 515 | EVP_MD_CTX_free(ctx); |
1cf218bc | 516 | |
e0f9bf1d | 517 | OPENSSL_cleanse(buf, sizeof(buf)); |
8c1a5343 MC |
518 | if (ret) |
519 | *secret_size = ret_secret_size; | |
520 | return ret; | |
0f113f3e | 521 | } |
d02b48c6 | 522 | |
6b691a5c | 523 | int ssl3_alert_code(int code) |
0f113f3e MC |
524 | { |
525 | switch (code) { | |
526 | case SSL_AD_CLOSE_NOTIFY: | |
26a7d938 | 527 | return SSL3_AD_CLOSE_NOTIFY; |
0f113f3e | 528 | case SSL_AD_UNEXPECTED_MESSAGE: |
26a7d938 | 529 | return SSL3_AD_UNEXPECTED_MESSAGE; |
0f113f3e | 530 | case SSL_AD_BAD_RECORD_MAC: |
26a7d938 | 531 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 532 | case SSL_AD_DECRYPTION_FAILED: |
26a7d938 | 533 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 534 | case SSL_AD_RECORD_OVERFLOW: |
26a7d938 | 535 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 536 | case SSL_AD_DECOMPRESSION_FAILURE: |
26a7d938 | 537 | return SSL3_AD_DECOMPRESSION_FAILURE; |
0f113f3e | 538 | case SSL_AD_HANDSHAKE_FAILURE: |
26a7d938 | 539 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 540 | case SSL_AD_NO_CERTIFICATE: |
26a7d938 | 541 | return SSL3_AD_NO_CERTIFICATE; |
0f113f3e | 542 | case SSL_AD_BAD_CERTIFICATE: |
26a7d938 | 543 | return SSL3_AD_BAD_CERTIFICATE; |
0f113f3e | 544 | case SSL_AD_UNSUPPORTED_CERTIFICATE: |
26a7d938 | 545 | return SSL3_AD_UNSUPPORTED_CERTIFICATE; |
0f113f3e | 546 | case SSL_AD_CERTIFICATE_REVOKED: |
26a7d938 | 547 | return SSL3_AD_CERTIFICATE_REVOKED; |
0f113f3e | 548 | case SSL_AD_CERTIFICATE_EXPIRED: |
26a7d938 | 549 | return SSL3_AD_CERTIFICATE_EXPIRED; |
0f113f3e | 550 | case SSL_AD_CERTIFICATE_UNKNOWN: |
26a7d938 | 551 | return SSL3_AD_CERTIFICATE_UNKNOWN; |
0f113f3e | 552 | case SSL_AD_ILLEGAL_PARAMETER: |
26a7d938 | 553 | return SSL3_AD_ILLEGAL_PARAMETER; |
0f113f3e | 554 | case SSL_AD_UNKNOWN_CA: |
26a7d938 | 555 | return SSL3_AD_BAD_CERTIFICATE; |
0f113f3e | 556 | case SSL_AD_ACCESS_DENIED: |
26a7d938 | 557 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 558 | case SSL_AD_DECODE_ERROR: |
26a7d938 | 559 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 560 | case SSL_AD_DECRYPT_ERROR: |
26a7d938 | 561 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 562 | case SSL_AD_EXPORT_RESTRICTION: |
26a7d938 | 563 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 564 | case SSL_AD_PROTOCOL_VERSION: |
26a7d938 | 565 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 566 | case SSL_AD_INSUFFICIENT_SECURITY: |
26a7d938 | 567 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 568 | case SSL_AD_INTERNAL_ERROR: |
26a7d938 | 569 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 570 | case SSL_AD_USER_CANCELLED: |
26a7d938 | 571 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 572 | case SSL_AD_NO_RENEGOTIATION: |
26a7d938 | 573 | return -1; /* Don't send it :-) */ |
0f113f3e | 574 | case SSL_AD_UNSUPPORTED_EXTENSION: |
26a7d938 | 575 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 576 | case SSL_AD_CERTIFICATE_UNOBTAINABLE: |
26a7d938 | 577 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 578 | case SSL_AD_UNRECOGNIZED_NAME: |
26a7d938 | 579 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 580 | case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: |
26a7d938 | 581 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 582 | case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: |
26a7d938 | 583 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 584 | case SSL_AD_UNKNOWN_PSK_IDENTITY: |
26a7d938 | 585 | return TLS1_AD_UNKNOWN_PSK_IDENTITY; |
0f113f3e | 586 | case SSL_AD_INAPPROPRIATE_FALLBACK: |
26a7d938 | 587 | return TLS1_AD_INAPPROPRIATE_FALLBACK; |
06217867 | 588 | case SSL_AD_NO_APPLICATION_PROTOCOL: |
26a7d938 | 589 | return TLS1_AD_NO_APPLICATION_PROTOCOL; |
42c28b63 MC |
590 | case SSL_AD_CERTIFICATE_REQUIRED: |
591 | return SSL_AD_HANDSHAKE_FAILURE; | |
0f113f3e | 592 | default: |
26a7d938 | 593 | return -1; |
0f113f3e MC |
594 | } |
595 | } |