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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> |
d5e5e2ff | 15 | #include <openssl/core_names.h> |
67dc995e | 16 | #include "internal/cryptlib.h" |
d02b48c6 | 17 | |
027e257b | 18 | static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num) |
0f113f3e | 19 | { |
6e59a892 RL |
20 | EVP_MD_CTX *m5; |
21 | EVP_MD_CTX *s1; | |
0f113f3e MC |
22 | unsigned char buf[16], smd[SHA_DIGEST_LENGTH]; |
23 | unsigned char c = 'A'; | |
24 | unsigned int i, j, k; | |
6e59a892 | 25 | int ret = 0; |
58964a49 | 26 | |
ca570cfd | 27 | #ifdef CHARSET_EBCDIC |
0f113f3e | 28 | c = os_toascii[c]; /* 'A' in ASCII */ |
ca570cfd | 29 | #endif |
0f113f3e | 30 | k = 0; |
bfb0641f RL |
31 | m5 = EVP_MD_CTX_new(); |
32 | s1 = EVP_MD_CTX_new(); | |
6e59a892 | 33 | if (m5 == NULL || s1 == NULL) { |
d4d2f3a4 MC |
34 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, |
35 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
36 | goto err; |
37 | } | |
38 | EVP_MD_CTX_set_flags(m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); | |
0f113f3e MC |
39 | for (i = 0; (int)i < num; i += MD5_DIGEST_LENGTH) { |
40 | k++; | |
a6fd7c1d | 41 | if (k > sizeof(buf)) { |
0f113f3e | 42 | /* bug: 'buf' is too small for this ciphersuite */ |
d4d2f3a4 MC |
43 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, |
44 | ERR_R_INTERNAL_ERROR); | |
a6fd7c1d | 45 | goto err; |
0f113f3e MC |
46 | } |
47 | ||
48 | for (j = 0; j < k; j++) | |
49 | buf[j] = c; | |
50 | c++; | |
d166ed8c DSH |
51 | if (!EVP_DigestInit_ex(s1, EVP_sha1(), NULL) |
52 | || !EVP_DigestUpdate(s1, buf, k) | |
53 | || !EVP_DigestUpdate(s1, s->session->master_key, | |
54 | s->session->master_key_length) | |
555cbb32 TS |
55 | || !EVP_DigestUpdate(s1, s->s3.server_random, SSL3_RANDOM_SIZE) |
56 | || !EVP_DigestUpdate(s1, s->s3.client_random, SSL3_RANDOM_SIZE) | |
d166ed8c DSH |
57 | || !EVP_DigestFinal_ex(s1, smd, NULL) |
58 | || !EVP_DigestInit_ex(m5, EVP_md5(), NULL) | |
59 | || !EVP_DigestUpdate(m5, s->session->master_key, | |
60 | s->session->master_key_length) | |
d4d2f3a4 MC |
61 | || !EVP_DigestUpdate(m5, smd, SHA_DIGEST_LENGTH)) { |
62 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, | |
63 | ERR_R_INTERNAL_ERROR); | |
d166ed8c | 64 | goto err; |
d4d2f3a4 | 65 | } |
0f113f3e | 66 | if ((int)(i + MD5_DIGEST_LENGTH) > num) { |
d4d2f3a4 MC |
67 | if (!EVP_DigestFinal_ex(m5, smd, NULL)) { |
68 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
69 | SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR); | |
d166ed8c | 70 | goto err; |
d4d2f3a4 | 71 | } |
0f113f3e | 72 | memcpy(km, smd, (num - i)); |
d166ed8c | 73 | } else { |
d4d2f3a4 MC |
74 | if (!EVP_DigestFinal_ex(m5, km, NULL)) { |
75 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
76 | SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR); | |
d166ed8c | 77 | goto err; |
d4d2f3a4 | 78 | } |
d166ed8c | 79 | } |
0f113f3e MC |
80 | |
81 | km += MD5_DIGEST_LENGTH; | |
82 | } | |
e0f9bf1d | 83 | OPENSSL_cleanse(smd, sizeof(smd)); |
6e59a892 RL |
84 | ret = 1; |
85 | err: | |
bfb0641f RL |
86 | EVP_MD_CTX_free(m5); |
87 | EVP_MD_CTX_free(s1); | |
6e59a892 | 88 | return ret; |
0f113f3e | 89 | } |
58964a49 | 90 | |
6b691a5c | 91 | int ssl3_change_cipher_state(SSL *s, int which) |
0f113f3e MC |
92 | { |
93 | unsigned char *p, *mac_secret; | |
361a1191 | 94 | unsigned char *ms, *key, *iv; |
0f113f3e MC |
95 | EVP_CIPHER_CTX *dd; |
96 | const EVP_CIPHER *c; | |
09b6c2ef | 97 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 98 | COMP_METHOD *comp; |
09b6c2ef | 99 | #endif |
0f113f3e | 100 | const EVP_MD *m; |
8c1a5343 MC |
101 | int mdi; |
102 | size_t n, i, j, k, cl; | |
0f113f3e MC |
103 | int reuse_dd = 0; |
104 | ||
555cbb32 TS |
105 | c = s->s3.tmp.new_sym_enc; |
106 | m = s->s3.tmp.new_hash; | |
0f113f3e | 107 | /* m == NULL will lead to a crash later */ |
380a522f | 108 | if (!ossl_assert(m != NULL)) { |
f63a17d6 MC |
109 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
110 | ERR_R_INTERNAL_ERROR); | |
111 | goto err; | |
380a522f | 112 | } |
09b6c2ef | 113 | #ifndef OPENSSL_NO_COMP |
555cbb32 | 114 | if (s->s3.tmp.new_compression == NULL) |
0f113f3e MC |
115 | comp = NULL; |
116 | else | |
555cbb32 | 117 | comp = s->s3.tmp.new_compression->method; |
09b6c2ef | 118 | #endif |
d02b48c6 | 119 | |
0f113f3e | 120 | if (which & SSL3_CC_READ) { |
f63a17d6 | 121 | if (s->enc_read_ctx != NULL) { |
0f113f3e | 122 | reuse_dd = 1; |
f63a17d6 MC |
123 | } else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) { |
124 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
125 | ERR_R_MALLOC_FAILURE); | |
0f113f3e | 126 | goto err; |
f63a17d6 | 127 | } else { |
0f113f3e | 128 | /* |
8483a003 | 129 | * make sure it's initialised in case we exit later with an error |
0f113f3e | 130 | */ |
846ec07d | 131 | EVP_CIPHER_CTX_reset(s->enc_read_ctx); |
f63a17d6 | 132 | } |
0f113f3e MC |
133 | dd = s->enc_read_ctx; |
134 | ||
5f3d93e4 | 135 | if (ssl_replace_hash(&s->read_hash, m) == NULL) { |
f63a17d6 MC |
136 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
137 | ERR_R_INTERNAL_ERROR); | |
138 | goto err; | |
69f68237 | 139 | } |
09b6c2ef | 140 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 141 | /* COMPRESS */ |
efa7dd64 RS |
142 | COMP_CTX_free(s->expand); |
143 | s->expand = NULL; | |
0f113f3e MC |
144 | if (comp != NULL) { |
145 | s->expand = COMP_CTX_new(comp); | |
146 | if (s->expand == NULL) { | |
f63a17d6 MC |
147 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
148 | SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
dd5a4279 | 149 | SSL_R_COMPRESSION_LIBRARY_ERROR); |
f63a17d6 | 150 | goto err; |
0f113f3e | 151 | } |
0f113f3e | 152 | } |
09b6c2ef | 153 | #endif |
de07f311 | 154 | RECORD_LAYER_reset_read_sequence(&s->rlayer); |
555cbb32 | 155 | mac_secret = &(s->s3.read_mac_secret[0]); |
0f113f3e | 156 | } else { |
7426cd34 | 157 | s->statem.enc_write_state = ENC_WRITE_STATE_INVALID; |
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); |
555cbb32 | 191 | mac_secret = &(s->s3.write_mac_secret[0]); |
0f113f3e MC |
192 | } |
193 | ||
194 | if (reuse_dd) | |
846ec07d | 195 | EVP_CIPHER_CTX_reset(dd); |
0f113f3e | 196 | |
555cbb32 | 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 | ||
555cbb32 | 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 | |
7426cd34 | 240 | s->statem.enc_write_state = ENC_WRITE_STATE_VALID; |
208fb891 | 241 | return 1; |
0f113f3e | 242 | err: |
26a7d938 | 243 | return 0; |
0f113f3e | 244 | } |
d02b48c6 | 245 | |
6b691a5c | 246 | int ssl3_setup_key_block(SSL *s) |
0f113f3e MC |
247 | { |
248 | unsigned char *p; | |
249 | const EVP_CIPHER *c; | |
250 | const EVP_MD *hash; | |
251 | int num; | |
252 | int ret = 0; | |
253 | SSL_COMP *comp; | |
254 | ||
555cbb32 | 255 | if (s->s3.tmp.key_block_length != 0) |
208fb891 | 256 | return 1; |
0f113f3e MC |
257 | |
258 | if (!ssl_cipher_get_evp(s->session, &c, &hash, NULL, NULL, &comp, 0)) { | |
f63a17d6 MC |
259 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, |
260 | SSL_R_CIPHER_OR_HASH_UNAVAILABLE); | |
26a7d938 | 261 | return 0; |
0f113f3e MC |
262 | } |
263 | ||
555cbb32 TS |
264 | s->s3.tmp.new_sym_enc = c; |
265 | s->s3.tmp.new_hash = hash; | |
09b6c2ef | 266 | #ifdef OPENSSL_NO_COMP |
555cbb32 | 267 | s->s3.tmp.new_compression = NULL; |
09b6c2ef | 268 | #else |
555cbb32 | 269 | s->s3.tmp.new_compression = comp; |
09b6c2ef | 270 | #endif |
d02b48c6 | 271 | |
0f113f3e MC |
272 | num = EVP_MD_size(hash); |
273 | if (num < 0) | |
274 | return 0; | |
275 | ||
276 | num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c); | |
277 | num *= 2; | |
0eab41fb | 278 | |
0f113f3e | 279 | ssl3_cleanup_key_block(s); |
d02b48c6 | 280 | |
f63a17d6 MC |
281 | if ((p = OPENSSL_malloc(num)) == NULL) { |
282 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, | |
283 | ERR_R_MALLOC_FAILURE); | |
284 | return 0; | |
285 | } | |
d02b48c6 | 286 | |
555cbb32 TS |
287 | s->s3.tmp.key_block_length = num; |
288 | s->s3.tmp.key_block = p; | |
d02b48c6 | 289 | |
d4d2f3a4 | 290 | /* Calls SSLfatal() as required */ |
0f113f3e | 291 | ret = ssl3_generate_key_block(s, p, num); |
d02b48c6 | 292 | |
0f113f3e MC |
293 | if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) { |
294 | /* | |
295 | * enable vulnerability countermeasure for CBC ciphers with known-IV | |
296 | * problem (http://www.openssl.org/~bodo/tls-cbc.txt) | |
297 | */ | |
555cbb32 | 298 | s->s3.need_empty_fragments = 1; |
82b0bf0b | 299 | |
0f113f3e MC |
300 | if (s->session->cipher != NULL) { |
301 | if (s->session->cipher->algorithm_enc == SSL_eNULL) | |
555cbb32 | 302 | s->s3.need_empty_fragments = 0; |
c21506ba | 303 | |
82b0bf0b | 304 | #ifndef OPENSSL_NO_RC4 |
0f113f3e | 305 | if (s->session->cipher->algorithm_enc == SSL_RC4) |
555cbb32 | 306 | s->s3.need_empty_fragments = 0; |
82b0bf0b | 307 | #endif |
0f113f3e MC |
308 | } |
309 | } | |
d02b48c6 | 310 | |
0f113f3e | 311 | return ret; |
0f113f3e | 312 | } |
d02b48c6 | 313 | |
6b691a5c | 314 | void ssl3_cleanup_key_block(SSL *s) |
0f113f3e | 315 | { |
555cbb32 TS |
316 | OPENSSL_clear_free(s->s3.tmp.key_block, s->s3.tmp.key_block_length); |
317 | s->s3.tmp.key_block = NULL; | |
318 | s->s3.tmp.key_block_length = 0; | |
0f113f3e | 319 | } |
d02b48c6 | 320 | |
2c4a056f | 321 | int ssl3_init_finished_mac(SSL *s) |
0f113f3e | 322 | { |
2c4a056f MC |
323 | BIO *buf = BIO_new(BIO_s_mem()); |
324 | ||
325 | if (buf == NULL) { | |
4752c5de MC |
326 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_INIT_FINISHED_MAC, |
327 | ERR_R_MALLOC_FAILURE); | |
2c4a056f MC |
328 | return 0; |
329 | } | |
85fb6fda | 330 | ssl3_free_digest_list(s); |
555cbb32 TS |
331 | s->s3.handshake_buffer = buf; |
332 | (void)BIO_set_close(s->s3.handshake_buffer, BIO_CLOSE); | |
2c4a056f | 333 | return 1; |
0f113f3e MC |
334 | } |
335 | ||
c7238204 DSH |
336 | /* |
337 | * Free digest list. Also frees handshake buffer since they are always freed | |
338 | * together. | |
339 | */ | |
340 | ||
0f113f3e MC |
341 | void ssl3_free_digest_list(SSL *s) |
342 | { | |
555cbb32 TS |
343 | BIO_free(s->s3.handshake_buffer); |
344 | s->s3.handshake_buffer = NULL; | |
345 | EVP_MD_CTX_free(s->s3.handshake_dgst); | |
346 | s->s3.handshake_dgst = NULL; | |
0f113f3e | 347 | } |
81025661 | 348 | |
7ee8627f | 349 | int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len) |
0f113f3e | 350 | { |
f63a17d6 MC |
351 | int ret; |
352 | ||
555cbb32 | 353 | if (s->s3.handshake_dgst == NULL) { |
d166ed8c | 354 | /* Note: this writes to a memory BIO so a failure is a fatal error */ |
f63a17d6 MC |
355 | if (len > INT_MAX) { |
356 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
357 | SSL_R_OVERFLOW_ERROR); | |
7ee8627f | 358 | return 0; |
f63a17d6 | 359 | } |
555cbb32 | 360 | ret = BIO_write(s->s3.handshake_buffer, (void *)buf, (int)len); |
f63a17d6 MC |
361 | if (ret <= 0 || ret != (int)len) { |
362 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
363 | ERR_R_INTERNAL_ERROR); | |
364 | return 0; | |
365 | } | |
7ee8627f | 366 | } else { |
555cbb32 | 367 | ret = EVP_DigestUpdate(s->s3.handshake_dgst, buf, len); |
f63a17d6 MC |
368 | if (!ret) { |
369 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
370 | ERR_R_INTERNAL_ERROR); | |
371 | return 0; | |
372 | } | |
7ee8627f | 373 | } |
f63a17d6 | 374 | return 1; |
0f113f3e | 375 | } |
6ba71a71 | 376 | |
124037fd | 377 | int ssl3_digest_cached_records(SSL *s, int keep) |
0f113f3e | 378 | { |
0f113f3e MC |
379 | const EVP_MD *md; |
380 | long hdatalen; | |
381 | void *hdata; | |
382 | ||
555cbb32 TS |
383 | if (s->s3.handshake_dgst == NULL) { |
384 | hdatalen = BIO_get_mem_data(s->s3.handshake_buffer, &hdata); | |
124037fd | 385 | if (hdatalen <= 0) { |
f63a17d6 MC |
386 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
387 | SSL_R_BAD_HANDSHAKE_LENGTH); | |
124037fd DSH |
388 | return 0; |
389 | } | |
0f113f3e | 390 | |
555cbb32 TS |
391 | s->s3.handshake_dgst = EVP_MD_CTX_new(); |
392 | if (s->s3.handshake_dgst == NULL) { | |
f63a17d6 MC |
393 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
394 | ERR_R_MALLOC_FAILURE); | |
28ba2541 DSH |
395 | return 0; |
396 | } | |
397 | ||
398 | md = ssl_handshake_md(s); | |
555cbb32 TS |
399 | if (md == NULL || !EVP_DigestInit_ex(s->s3.handshake_dgst, md, NULL) |
400 | || !EVP_DigestUpdate(s->s3.handshake_dgst, hdata, hdatalen)) { | |
f63a17d6 MC |
401 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
402 | ERR_R_INTERNAL_ERROR); | |
28ba2541 | 403 | return 0; |
0f113f3e MC |
404 | } |
405 | } | |
124037fd | 406 | if (keep == 0) { |
555cbb32 TS |
407 | BIO_free(s->s3.handshake_buffer); |
408 | s->s3.handshake_buffer = NULL; | |
0f113f3e MC |
409 | } |
410 | ||
411 | return 1; | |
412 | } | |
6ba71a71 | 413 | |
d5e5e2ff SL |
414 | void ssl3_digest_master_key_set_params(const SSL_SESSION *session, |
415 | OSSL_PARAM params[]) | |
416 | { | |
417 | int n = 0; | |
83b4a243 SL |
418 | params[n++] = OSSL_PARAM_construct_octet_string(OSSL_DIGEST_PARAM_SSL3_MS, |
419 | (void *)session->master_key, | |
420 | session->master_key_length, | |
421 | NULL); | |
d5e5e2ff SL |
422 | params[n++] = OSSL_PARAM_construct_end(); |
423 | } | |
424 | ||
6db6bc5a MC |
425 | size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t len, |
426 | unsigned char *p) | |
0f113f3e | 427 | { |
28ba2541 | 428 | int ret; |
6e59a892 | 429 | EVP_MD_CTX *ctx = NULL; |
0f113f3e | 430 | |
d4d2f3a4 MC |
431 | if (!ssl3_digest_cached_records(s, 0)) { |
432 | /* SSLfatal() already called */ | |
124037fd | 433 | return 0; |
d4d2f3a4 | 434 | } |
0f113f3e | 435 | |
555cbb32 | 436 | if (EVP_MD_CTX_type(s->s3.handshake_dgst) != NID_md5_sha1) { |
d4d2f3a4 MC |
437 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
438 | SSL_R_NO_REQUIRED_DIGEST); | |
0f113f3e MC |
439 | return 0; |
440 | } | |
28ba2541 | 441 | |
bfb0641f | 442 | ctx = EVP_MD_CTX_new(); |
6e59a892 | 443 | if (ctx == NULL) { |
d4d2f3a4 MC |
444 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
445 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
446 | return 0; |
447 | } | |
555cbb32 | 448 | if (!EVP_MD_CTX_copy_ex(ctx, s->s3.handshake_dgst)) { |
d4d2f3a4 MC |
449 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
450 | ERR_R_INTERNAL_ERROR); | |
7d0effea AP |
451 | ret = 0; |
452 | goto err; | |
d356dc56 | 453 | } |
28ba2541 | 454 | |
6e59a892 | 455 | ret = EVP_MD_CTX_size(ctx); |
28ba2541 | 456 | if (ret < 0) { |
d4d2f3a4 MC |
457 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
458 | ERR_R_INTERNAL_ERROR); | |
7d0effea AP |
459 | ret = 0; |
460 | goto err; | |
28ba2541 | 461 | } |
0f113f3e | 462 | |
d5e5e2ff SL |
463 | if (sender != NULL) { |
464 | OSSL_PARAM digest_cmd_params[3]; | |
465 | ||
466 | ssl3_digest_master_key_set_params(s->session, digest_cmd_params); | |
83b4a243 | 467 | |
d5e5e2ff SL |
468 | if (EVP_DigestUpdate(ctx, sender, len) <= 0 |
469 | || EVP_MD_CTX_set_params(ctx, digest_cmd_params) <= 0 | |
470 | || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) { | |
471 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, | |
472 | ERR_R_INTERNAL_ERROR); | |
473 | ret = 0; | |
474 | } | |
5f3d93e4 | 475 | } |
0f113f3e | 476 | |
7d0effea | 477 | err: |
bfb0641f | 478 | EVP_MD_CTX_free(ctx); |
0f113f3e | 479 | |
28ba2541 | 480 | return ret; |
0f113f3e | 481 | } |
d02b48c6 | 482 | |
6b691a5c | 483 | int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, |
8c1a5343 | 484 | size_t len, size_t *secret_size) |
0f113f3e MC |
485 | { |
486 | static const unsigned char *salt[3] = { | |
ca570cfd | 487 | #ifndef CHARSET_EBCDIC |
0f113f3e MC |
488 | (const unsigned char *)"A", |
489 | (const unsigned char *)"BB", | |
490 | (const unsigned char *)"CCC", | |
ca570cfd | 491 | #else |
0f113f3e MC |
492 | (const unsigned char *)"\x41", |
493 | (const unsigned char *)"\x42\x42", | |
494 | (const unsigned char *)"\x43\x43\x43", | |
ca570cfd | 495 | #endif |
0f113f3e MC |
496 | }; |
497 | unsigned char buf[EVP_MAX_MD_SIZE]; | |
bfb0641f | 498 | EVP_MD_CTX *ctx = EVP_MD_CTX_new(); |
8c1a5343 | 499 | int i, ret = 1; |
0f113f3e | 500 | unsigned int n; |
8c1a5343 | 501 | size_t ret_secret_size = 0; |
d02b48c6 | 502 | |
6e59a892 | 503 | if (ctx == NULL) { |
f63a17d6 MC |
504 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_MASTER_SECRET, |
505 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
506 | return 0; |
507 | } | |
0f113f3e | 508 | for (i = 0; i < 3; i++) { |
6e59a892 | 509 | if (EVP_DigestInit_ex(ctx, s->ctx->sha1, NULL) <= 0 |
a230b26e EK |
510 | || EVP_DigestUpdate(ctx, salt[i], |
511 | strlen((const char *)salt[i])) <= 0 | |
512 | || EVP_DigestUpdate(ctx, p, len) <= 0 | |
555cbb32 | 513 | || EVP_DigestUpdate(ctx, &(s->s3.client_random[0]), |
a230b26e | 514 | SSL3_RANDOM_SIZE) <= 0 |
555cbb32 | 515 | || EVP_DigestUpdate(ctx, &(s->s3.server_random[0]), |
a230b26e | 516 | SSL3_RANDOM_SIZE) <= 0 |
8c1a5343 | 517 | /* TODO(size_t) : convert me */ |
a230b26e EK |
518 | || EVP_DigestFinal_ex(ctx, buf, &n) <= 0 |
519 | || EVP_DigestInit_ex(ctx, s->ctx->md5, NULL) <= 0 | |
520 | || EVP_DigestUpdate(ctx, p, len) <= 0 | |
521 | || EVP_DigestUpdate(ctx, buf, n) <= 0 | |
522 | || EVP_DigestFinal_ex(ctx, out, &n) <= 0) { | |
f63a17d6 MC |
523 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
524 | SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR); | |
5f3d93e4 MC |
525 | ret = 0; |
526 | break; | |
527 | } | |
0f113f3e | 528 | out += n; |
8c1a5343 | 529 | ret_secret_size += n; |
0f113f3e | 530 | } |
bfb0641f | 531 | EVP_MD_CTX_free(ctx); |
1cf218bc | 532 | |
e0f9bf1d | 533 | OPENSSL_cleanse(buf, sizeof(buf)); |
8c1a5343 MC |
534 | if (ret) |
535 | *secret_size = ret_secret_size; | |
536 | return ret; | |
0f113f3e | 537 | } |
d02b48c6 | 538 | |
6b691a5c | 539 | int ssl3_alert_code(int code) |
0f113f3e MC |
540 | { |
541 | switch (code) { | |
542 | case SSL_AD_CLOSE_NOTIFY: | |
26a7d938 | 543 | return SSL3_AD_CLOSE_NOTIFY; |
0f113f3e | 544 | case SSL_AD_UNEXPECTED_MESSAGE: |
26a7d938 | 545 | return SSL3_AD_UNEXPECTED_MESSAGE; |
0f113f3e | 546 | case SSL_AD_BAD_RECORD_MAC: |
26a7d938 | 547 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 548 | case SSL_AD_DECRYPTION_FAILED: |
26a7d938 | 549 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 550 | case SSL_AD_RECORD_OVERFLOW: |
26a7d938 | 551 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 552 | case SSL_AD_DECOMPRESSION_FAILURE: |
26a7d938 | 553 | return SSL3_AD_DECOMPRESSION_FAILURE; |
0f113f3e | 554 | case SSL_AD_HANDSHAKE_FAILURE: |
26a7d938 | 555 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 556 | case SSL_AD_NO_CERTIFICATE: |
26a7d938 | 557 | return SSL3_AD_NO_CERTIFICATE; |
0f113f3e | 558 | case SSL_AD_BAD_CERTIFICATE: |
26a7d938 | 559 | return SSL3_AD_BAD_CERTIFICATE; |
0f113f3e | 560 | case SSL_AD_UNSUPPORTED_CERTIFICATE: |
26a7d938 | 561 | return SSL3_AD_UNSUPPORTED_CERTIFICATE; |
0f113f3e | 562 | case SSL_AD_CERTIFICATE_REVOKED: |
26a7d938 | 563 | return SSL3_AD_CERTIFICATE_REVOKED; |
0f113f3e | 564 | case SSL_AD_CERTIFICATE_EXPIRED: |
26a7d938 | 565 | return SSL3_AD_CERTIFICATE_EXPIRED; |
0f113f3e | 566 | case SSL_AD_CERTIFICATE_UNKNOWN: |
26a7d938 | 567 | return SSL3_AD_CERTIFICATE_UNKNOWN; |
0f113f3e | 568 | case SSL_AD_ILLEGAL_PARAMETER: |
26a7d938 | 569 | return SSL3_AD_ILLEGAL_PARAMETER; |
0f113f3e | 570 | case SSL_AD_UNKNOWN_CA: |
26a7d938 | 571 | return SSL3_AD_BAD_CERTIFICATE; |
0f113f3e | 572 | case SSL_AD_ACCESS_DENIED: |
26a7d938 | 573 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 574 | case SSL_AD_DECODE_ERROR: |
26a7d938 | 575 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 576 | case SSL_AD_DECRYPT_ERROR: |
26a7d938 | 577 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 578 | case SSL_AD_EXPORT_RESTRICTION: |
26a7d938 | 579 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 580 | case SSL_AD_PROTOCOL_VERSION: |
26a7d938 | 581 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 582 | case SSL_AD_INSUFFICIENT_SECURITY: |
26a7d938 | 583 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 584 | case SSL_AD_INTERNAL_ERROR: |
26a7d938 | 585 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 586 | case SSL_AD_USER_CANCELLED: |
26a7d938 | 587 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 588 | case SSL_AD_NO_RENEGOTIATION: |
26a7d938 | 589 | return -1; /* Don't send it :-) */ |
0f113f3e | 590 | case SSL_AD_UNSUPPORTED_EXTENSION: |
26a7d938 | 591 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 592 | case SSL_AD_CERTIFICATE_UNOBTAINABLE: |
26a7d938 | 593 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 594 | case SSL_AD_UNRECOGNIZED_NAME: |
26a7d938 | 595 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 596 | case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: |
26a7d938 | 597 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 598 | case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: |
26a7d938 | 599 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 600 | case SSL_AD_UNKNOWN_PSK_IDENTITY: |
26a7d938 | 601 | return TLS1_AD_UNKNOWN_PSK_IDENTITY; |
0f113f3e | 602 | case SSL_AD_INAPPROPRIATE_FALLBACK: |
26a7d938 | 603 | return TLS1_AD_INAPPROPRIATE_FALLBACK; |
06217867 | 604 | case SSL_AD_NO_APPLICATION_PROTOCOL: |
26a7d938 | 605 | return TLS1_AD_NO_APPLICATION_PROTOCOL; |
42c28b63 MC |
606 | case SSL_AD_CERTIFICATE_REQUIRED: |
607 | return SSL_AD_HANDSHAKE_FAILURE; | |
0f113f3e | 608 | default: |
26a7d938 | 609 | return -1; |
0f113f3e MC |
610 | } |
611 | } |