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Commit | Line | Data |
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846e33c7 | 1 | /* |
33388b44 | 2 | * Copyright 1995-2020 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> |
706457b7 | 12 | #include "ssl_local.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 | { |
62ba8345 | 20 | const EVP_MD *md5 = NULL, *sha1 = NULL; |
6e59a892 RL |
21 | EVP_MD_CTX *m5; |
22 | EVP_MD_CTX *s1; | |
0f113f3e MC |
23 | unsigned char buf[16], smd[SHA_DIGEST_LENGTH]; |
24 | unsigned char c = 'A'; | |
25 | unsigned int i, j, k; | |
6e59a892 | 26 | int ret = 0; |
58964a49 | 27 | |
ca570cfd | 28 | #ifdef CHARSET_EBCDIC |
0f113f3e | 29 | c = os_toascii[c]; /* 'A' in ASCII */ |
ca570cfd | 30 | #endif |
0f113f3e | 31 | k = 0; |
62ba8345 MC |
32 | md5 = ssl_evp_md_fetch(s->ctx->libctx, NID_md5, s->ctx->propq); |
33 | sha1 = ssl_evp_md_fetch(s->ctx->libctx, NID_sha1, s->ctx->propq); | |
bfb0641f RL |
34 | m5 = EVP_MD_CTX_new(); |
35 | s1 = EVP_MD_CTX_new(); | |
62ba8345 | 36 | if (md5 == NULL || sha1 == NULL || m5 == NULL || s1 == NULL) { |
d4d2f3a4 MC |
37 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, |
38 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
39 | goto err; |
40 | } | |
0f113f3e MC |
41 | for (i = 0; (int)i < num; i += MD5_DIGEST_LENGTH) { |
42 | k++; | |
a6fd7c1d | 43 | if (k > sizeof(buf)) { |
0f113f3e | 44 | /* bug: 'buf' is too small for this ciphersuite */ |
d4d2f3a4 MC |
45 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, |
46 | ERR_R_INTERNAL_ERROR); | |
a6fd7c1d | 47 | goto err; |
0f113f3e MC |
48 | } |
49 | ||
50 | for (j = 0; j < k; j++) | |
51 | buf[j] = c; | |
52 | c++; | |
62ba8345 | 53 | if (!EVP_DigestInit_ex(s1, sha1, NULL) |
d166ed8c DSH |
54 | || !EVP_DigestUpdate(s1, buf, k) |
55 | || !EVP_DigestUpdate(s1, s->session->master_key, | |
56 | s->session->master_key_length) | |
555cbb32 TS |
57 | || !EVP_DigestUpdate(s1, s->s3.server_random, SSL3_RANDOM_SIZE) |
58 | || !EVP_DigestUpdate(s1, s->s3.client_random, SSL3_RANDOM_SIZE) | |
d166ed8c | 59 | || !EVP_DigestFinal_ex(s1, smd, NULL) |
47b4ccea | 60 | || !EVP_DigestInit_ex(m5, md5, NULL) |
d166ed8c DSH |
61 | || !EVP_DigestUpdate(m5, s->session->master_key, |
62 | s->session->master_key_length) | |
d4d2f3a4 MC |
63 | || !EVP_DigestUpdate(m5, smd, SHA_DIGEST_LENGTH)) { |
64 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_KEY_BLOCK, | |
65 | ERR_R_INTERNAL_ERROR); | |
d166ed8c | 66 | goto err; |
d4d2f3a4 | 67 | } |
0f113f3e | 68 | if ((int)(i + MD5_DIGEST_LENGTH) > num) { |
d4d2f3a4 MC |
69 | if (!EVP_DigestFinal_ex(m5, smd, NULL)) { |
70 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
71 | SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR); | |
d166ed8c | 72 | goto err; |
d4d2f3a4 | 73 | } |
0f113f3e | 74 | memcpy(km, smd, (num - i)); |
d166ed8c | 75 | } else { |
d4d2f3a4 MC |
76 | if (!EVP_DigestFinal_ex(m5, km, NULL)) { |
77 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
78 | SSL_F_SSL3_GENERATE_KEY_BLOCK, ERR_R_INTERNAL_ERROR); | |
d166ed8c | 79 | goto err; |
d4d2f3a4 | 80 | } |
d166ed8c | 81 | } |
0f113f3e MC |
82 | |
83 | km += MD5_DIGEST_LENGTH; | |
84 | } | |
e0f9bf1d | 85 | OPENSSL_cleanse(smd, sizeof(smd)); |
6e59a892 RL |
86 | ret = 1; |
87 | err: | |
bfb0641f RL |
88 | EVP_MD_CTX_free(m5); |
89 | EVP_MD_CTX_free(s1); | |
c8f6c28a | 90 | ssl_evp_md_free(md5); |
62ba8345 | 91 | ssl_evp_md_free(sha1); |
6e59a892 | 92 | return ret; |
0f113f3e | 93 | } |
58964a49 | 94 | |
6b691a5c | 95 | int ssl3_change_cipher_state(SSL *s, int which) |
0f113f3e MC |
96 | { |
97 | unsigned char *p, *mac_secret; | |
361a1191 | 98 | unsigned char *ms, *key, *iv; |
0f113f3e MC |
99 | EVP_CIPHER_CTX *dd; |
100 | const EVP_CIPHER *c; | |
09b6c2ef | 101 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 102 | COMP_METHOD *comp; |
09b6c2ef | 103 | #endif |
0f113f3e | 104 | const EVP_MD *m; |
8c1a5343 MC |
105 | int mdi; |
106 | size_t n, i, j, k, cl; | |
0f113f3e MC |
107 | int reuse_dd = 0; |
108 | ||
555cbb32 TS |
109 | c = s->s3.tmp.new_sym_enc; |
110 | m = s->s3.tmp.new_hash; | |
0f113f3e | 111 | /* m == NULL will lead to a crash later */ |
380a522f | 112 | if (!ossl_assert(m != NULL)) { |
f63a17d6 MC |
113 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
114 | ERR_R_INTERNAL_ERROR); | |
115 | goto err; | |
380a522f | 116 | } |
09b6c2ef | 117 | #ifndef OPENSSL_NO_COMP |
555cbb32 | 118 | if (s->s3.tmp.new_compression == NULL) |
0f113f3e MC |
119 | comp = NULL; |
120 | else | |
555cbb32 | 121 | comp = s->s3.tmp.new_compression->method; |
09b6c2ef | 122 | #endif |
d02b48c6 | 123 | |
0f113f3e | 124 | if (which & SSL3_CC_READ) { |
f63a17d6 | 125 | if (s->enc_read_ctx != NULL) { |
0f113f3e | 126 | reuse_dd = 1; |
f63a17d6 MC |
127 | } else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) { |
128 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
129 | ERR_R_MALLOC_FAILURE); | |
0f113f3e | 130 | goto err; |
f63a17d6 | 131 | } else { |
0f113f3e | 132 | /* |
8483a003 | 133 | * make sure it's initialised in case we exit later with an error |
0f113f3e | 134 | */ |
846ec07d | 135 | EVP_CIPHER_CTX_reset(s->enc_read_ctx); |
f63a17d6 | 136 | } |
0f113f3e MC |
137 | dd = s->enc_read_ctx; |
138 | ||
5f3d93e4 | 139 | if (ssl_replace_hash(&s->read_hash, m) == NULL) { |
f63a17d6 MC |
140 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
141 | ERR_R_INTERNAL_ERROR); | |
142 | goto err; | |
69f68237 | 143 | } |
09b6c2ef | 144 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 145 | /* COMPRESS */ |
efa7dd64 RS |
146 | COMP_CTX_free(s->expand); |
147 | s->expand = NULL; | |
0f113f3e MC |
148 | if (comp != NULL) { |
149 | s->expand = COMP_CTX_new(comp); | |
150 | if (s->expand == NULL) { | |
f63a17d6 MC |
151 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
152 | SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
dd5a4279 | 153 | SSL_R_COMPRESSION_LIBRARY_ERROR); |
f63a17d6 | 154 | goto err; |
0f113f3e | 155 | } |
0f113f3e | 156 | } |
09b6c2ef | 157 | #endif |
de07f311 | 158 | RECORD_LAYER_reset_read_sequence(&s->rlayer); |
555cbb32 | 159 | mac_secret = &(s->s3.read_mac_secret[0]); |
0f113f3e | 160 | } else { |
7426cd34 | 161 | s->statem.enc_write_state = ENC_WRITE_STATE_INVALID; |
f63a17d6 | 162 | if (s->enc_write_ctx != NULL) { |
0f113f3e | 163 | reuse_dd = 1; |
f63a17d6 MC |
164 | } else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) { |
165 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
166 | ERR_R_MALLOC_FAILURE); | |
0f113f3e | 167 | goto err; |
f63a17d6 | 168 | } else { |
0f113f3e | 169 | /* |
8483a003 | 170 | * make sure it's initialised in case we exit later with an error |
0f113f3e | 171 | */ |
846ec07d | 172 | EVP_CIPHER_CTX_reset(s->enc_write_ctx); |
f63a17d6 | 173 | } |
0f113f3e | 174 | dd = s->enc_write_ctx; |
5f3d93e4 | 175 | if (ssl_replace_hash(&s->write_hash, m) == NULL) { |
f63a17d6 MC |
176 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
177 | ERR_R_MALLOC_FAILURE); | |
178 | goto err; | |
69f68237 | 179 | } |
09b6c2ef | 180 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 181 | /* COMPRESS */ |
efa7dd64 RS |
182 | COMP_CTX_free(s->compress); |
183 | s->compress = NULL; | |
0f113f3e MC |
184 | if (comp != NULL) { |
185 | s->compress = COMP_CTX_new(comp); | |
186 | if (s->compress == NULL) { | |
f63a17d6 MC |
187 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
188 | SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
189 | SSL_R_COMPRESSION_LIBRARY_ERROR); | |
190 | goto err; | |
0f113f3e MC |
191 | } |
192 | } | |
09b6c2ef | 193 | #endif |
de07f311 | 194 | RECORD_LAYER_reset_write_sequence(&s->rlayer); |
555cbb32 | 195 | mac_secret = &(s->s3.write_mac_secret[0]); |
0f113f3e MC |
196 | } |
197 | ||
198 | if (reuse_dd) | |
846ec07d | 199 | EVP_CIPHER_CTX_reset(dd); |
0f113f3e | 200 | |
555cbb32 | 201 | p = s->s3.tmp.key_block; |
8c1a5343 | 202 | mdi = EVP_MD_size(m); |
f63a17d6 MC |
203 | if (mdi < 0) { |
204 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
205 | ERR_R_INTERNAL_ERROR); | |
206 | goto err; | |
207 | } | |
8c1a5343 | 208 | i = mdi; |
0f113f3e | 209 | cl = EVP_CIPHER_key_length(c); |
361a1191 | 210 | j = cl; |
0f113f3e MC |
211 | k = EVP_CIPHER_iv_length(c); |
212 | if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || | |
213 | (which == SSL3_CHANGE_CIPHER_SERVER_READ)) { | |
214 | ms = &(p[0]); | |
215 | n = i + i; | |
216 | key = &(p[n]); | |
217 | n += j + j; | |
218 | iv = &(p[n]); | |
219 | n += k + k; | |
0f113f3e MC |
220 | } else { |
221 | n = i; | |
222 | ms = &(p[n]); | |
223 | n += i + j; | |
224 | key = &(p[n]); | |
225 | n += j + k; | |
226 | iv = &(p[n]); | |
227 | n += k; | |
0f113f3e MC |
228 | } |
229 | ||
555cbb32 | 230 | if (n > s->s3.tmp.key_block_length) { |
f63a17d6 MC |
231 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, |
232 | ERR_R_INTERNAL_ERROR); | |
233 | goto err; | |
0f113f3e MC |
234 | } |
235 | ||
0f113f3e | 236 | memcpy(mac_secret, ms, i); |
0f113f3e | 237 | |
f63a17d6 MC |
238 | if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) { |
239 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHANGE_CIPHER_STATE, | |
240 | ERR_R_INTERNAL_ERROR); | |
241 | goto err; | |
242 | } | |
58964a49 | 243 | |
b5588178 MC |
244 | if (EVP_CIPHER_provider(c) != NULL |
245 | && !tls_provider_set_tls_params(s, dd, c, m)) { | |
246 | /* SSLfatal already called */ | |
247 | goto err; | |
248 | } | |
249 | ||
7426cd34 | 250 | s->statem.enc_write_state = ENC_WRITE_STATE_VALID; |
208fb891 | 251 | return 1; |
0f113f3e | 252 | err: |
26a7d938 | 253 | return 0; |
0f113f3e | 254 | } |
d02b48c6 | 255 | |
6b691a5c | 256 | int ssl3_setup_key_block(SSL *s) |
0f113f3e MC |
257 | { |
258 | unsigned char *p; | |
259 | const EVP_CIPHER *c; | |
260 | const EVP_MD *hash; | |
261 | int num; | |
262 | int ret = 0; | |
263 | SSL_COMP *comp; | |
264 | ||
555cbb32 | 265 | if (s->s3.tmp.key_block_length != 0) |
208fb891 | 266 | return 1; |
0f113f3e | 267 | |
c8f6c28a MC |
268 | if (!ssl_cipher_get_evp(s->ctx, s->session, &c, &hash, NULL, NULL, &comp, |
269 | 0)) { | |
f63a17d6 MC |
270 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, |
271 | SSL_R_CIPHER_OR_HASH_UNAVAILABLE); | |
26a7d938 | 272 | return 0; |
0f113f3e MC |
273 | } |
274 | ||
c8f6c28a | 275 | ssl_evp_cipher_free(s->s3.tmp.new_sym_enc); |
555cbb32 | 276 | s->s3.tmp.new_sym_enc = c; |
c8f6c28a | 277 | ssl_evp_md_free(s->s3.tmp.new_hash); |
555cbb32 | 278 | s->s3.tmp.new_hash = hash; |
09b6c2ef | 279 | #ifdef OPENSSL_NO_COMP |
555cbb32 | 280 | s->s3.tmp.new_compression = NULL; |
09b6c2ef | 281 | #else |
555cbb32 | 282 | s->s3.tmp.new_compression = comp; |
09b6c2ef | 283 | #endif |
d02b48c6 | 284 | |
0f113f3e MC |
285 | num = EVP_MD_size(hash); |
286 | if (num < 0) | |
287 | return 0; | |
288 | ||
289 | num = EVP_CIPHER_key_length(c) + num + EVP_CIPHER_iv_length(c); | |
290 | num *= 2; | |
0eab41fb | 291 | |
0f113f3e | 292 | ssl3_cleanup_key_block(s); |
d02b48c6 | 293 | |
f63a17d6 MC |
294 | if ((p = OPENSSL_malloc(num)) == NULL) { |
295 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_SETUP_KEY_BLOCK, | |
296 | ERR_R_MALLOC_FAILURE); | |
297 | return 0; | |
298 | } | |
d02b48c6 | 299 | |
555cbb32 TS |
300 | s->s3.tmp.key_block_length = num; |
301 | s->s3.tmp.key_block = p; | |
d02b48c6 | 302 | |
d4d2f3a4 | 303 | /* Calls SSLfatal() as required */ |
0f113f3e | 304 | ret = ssl3_generate_key_block(s, p, num); |
d02b48c6 | 305 | |
0f113f3e MC |
306 | if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) { |
307 | /* | |
308 | * enable vulnerability countermeasure for CBC ciphers with known-IV | |
309 | * problem (http://www.openssl.org/~bodo/tls-cbc.txt) | |
310 | */ | |
555cbb32 | 311 | s->s3.need_empty_fragments = 1; |
82b0bf0b | 312 | |
0f113f3e MC |
313 | if (s->session->cipher != NULL) { |
314 | if (s->session->cipher->algorithm_enc == SSL_eNULL) | |
555cbb32 | 315 | s->s3.need_empty_fragments = 0; |
c21506ba | 316 | |
82b0bf0b | 317 | #ifndef OPENSSL_NO_RC4 |
0f113f3e | 318 | if (s->session->cipher->algorithm_enc == SSL_RC4) |
555cbb32 | 319 | s->s3.need_empty_fragments = 0; |
82b0bf0b | 320 | #endif |
0f113f3e MC |
321 | } |
322 | } | |
d02b48c6 | 323 | |
0f113f3e | 324 | return ret; |
0f113f3e | 325 | } |
d02b48c6 | 326 | |
6b691a5c | 327 | void ssl3_cleanup_key_block(SSL *s) |
0f113f3e | 328 | { |
555cbb32 TS |
329 | OPENSSL_clear_free(s->s3.tmp.key_block, s->s3.tmp.key_block_length); |
330 | s->s3.tmp.key_block = NULL; | |
331 | s->s3.tmp.key_block_length = 0; | |
0f113f3e | 332 | } |
d02b48c6 | 333 | |
2c4a056f | 334 | int ssl3_init_finished_mac(SSL *s) |
0f113f3e | 335 | { |
2c4a056f MC |
336 | BIO *buf = BIO_new(BIO_s_mem()); |
337 | ||
338 | if (buf == NULL) { | |
4752c5de MC |
339 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_INIT_FINISHED_MAC, |
340 | ERR_R_MALLOC_FAILURE); | |
2c4a056f MC |
341 | return 0; |
342 | } | |
85fb6fda | 343 | ssl3_free_digest_list(s); |
555cbb32 TS |
344 | s->s3.handshake_buffer = buf; |
345 | (void)BIO_set_close(s->s3.handshake_buffer, BIO_CLOSE); | |
2c4a056f | 346 | return 1; |
0f113f3e MC |
347 | } |
348 | ||
c7238204 DSH |
349 | /* |
350 | * Free digest list. Also frees handshake buffer since they are always freed | |
351 | * together. | |
352 | */ | |
353 | ||
0f113f3e MC |
354 | void ssl3_free_digest_list(SSL *s) |
355 | { | |
555cbb32 TS |
356 | BIO_free(s->s3.handshake_buffer); |
357 | s->s3.handshake_buffer = NULL; | |
358 | EVP_MD_CTX_free(s->s3.handshake_dgst); | |
359 | s->s3.handshake_dgst = NULL; | |
0f113f3e | 360 | } |
81025661 | 361 | |
7ee8627f | 362 | int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len) |
0f113f3e | 363 | { |
f63a17d6 MC |
364 | int ret; |
365 | ||
555cbb32 | 366 | if (s->s3.handshake_dgst == NULL) { |
d166ed8c | 367 | /* Note: this writes to a memory BIO so a failure is a fatal error */ |
f63a17d6 MC |
368 | if (len > INT_MAX) { |
369 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
370 | SSL_R_OVERFLOW_ERROR); | |
7ee8627f | 371 | return 0; |
f63a17d6 | 372 | } |
555cbb32 | 373 | ret = BIO_write(s->s3.handshake_buffer, (void *)buf, (int)len); |
f63a17d6 MC |
374 | if (ret <= 0 || ret != (int)len) { |
375 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
376 | ERR_R_INTERNAL_ERROR); | |
377 | return 0; | |
378 | } | |
7ee8627f | 379 | } else { |
555cbb32 | 380 | ret = EVP_DigestUpdate(s->s3.handshake_dgst, buf, len); |
f63a17d6 MC |
381 | if (!ret) { |
382 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINISH_MAC, | |
383 | ERR_R_INTERNAL_ERROR); | |
384 | return 0; | |
385 | } | |
7ee8627f | 386 | } |
f63a17d6 | 387 | return 1; |
0f113f3e | 388 | } |
6ba71a71 | 389 | |
124037fd | 390 | int ssl3_digest_cached_records(SSL *s, int keep) |
0f113f3e | 391 | { |
0f113f3e MC |
392 | const EVP_MD *md; |
393 | long hdatalen; | |
394 | void *hdata; | |
395 | ||
555cbb32 TS |
396 | if (s->s3.handshake_dgst == NULL) { |
397 | hdatalen = BIO_get_mem_data(s->s3.handshake_buffer, &hdata); | |
124037fd | 398 | if (hdatalen <= 0) { |
f63a17d6 MC |
399 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
400 | SSL_R_BAD_HANDSHAKE_LENGTH); | |
124037fd DSH |
401 | return 0; |
402 | } | |
0f113f3e | 403 | |
555cbb32 TS |
404 | s->s3.handshake_dgst = EVP_MD_CTX_new(); |
405 | if (s->s3.handshake_dgst == NULL) { | |
f63a17d6 MC |
406 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
407 | ERR_R_MALLOC_FAILURE); | |
28ba2541 DSH |
408 | return 0; |
409 | } | |
410 | ||
411 | md = ssl_handshake_md(s); | |
555cbb32 TS |
412 | if (md == NULL || !EVP_DigestInit_ex(s->s3.handshake_dgst, md, NULL) |
413 | || !EVP_DigestUpdate(s->s3.handshake_dgst, hdata, hdatalen)) { | |
f63a17d6 MC |
414 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_DIGEST_CACHED_RECORDS, |
415 | ERR_R_INTERNAL_ERROR); | |
28ba2541 | 416 | return 0; |
0f113f3e MC |
417 | } |
418 | } | |
124037fd | 419 | if (keep == 0) { |
555cbb32 TS |
420 | BIO_free(s->s3.handshake_buffer); |
421 | s->s3.handshake_buffer = NULL; | |
0f113f3e MC |
422 | } |
423 | ||
424 | return 1; | |
425 | } | |
6ba71a71 | 426 | |
d5e5e2ff SL |
427 | void ssl3_digest_master_key_set_params(const SSL_SESSION *session, |
428 | OSSL_PARAM params[]) | |
429 | { | |
430 | int n = 0; | |
83b4a243 SL |
431 | params[n++] = OSSL_PARAM_construct_octet_string(OSSL_DIGEST_PARAM_SSL3_MS, |
432 | (void *)session->master_key, | |
4e7991b4 | 433 | session->master_key_length); |
d5e5e2ff SL |
434 | params[n++] = OSSL_PARAM_construct_end(); |
435 | } | |
436 | ||
6db6bc5a MC |
437 | size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t len, |
438 | unsigned char *p) | |
0f113f3e | 439 | { |
28ba2541 | 440 | int ret; |
6e59a892 | 441 | EVP_MD_CTX *ctx = NULL; |
0f113f3e | 442 | |
d4d2f3a4 MC |
443 | if (!ssl3_digest_cached_records(s, 0)) { |
444 | /* SSLfatal() already called */ | |
124037fd | 445 | return 0; |
d4d2f3a4 | 446 | } |
0f113f3e | 447 | |
555cbb32 | 448 | if (EVP_MD_CTX_type(s->s3.handshake_dgst) != NID_md5_sha1) { |
d4d2f3a4 MC |
449 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
450 | SSL_R_NO_REQUIRED_DIGEST); | |
0f113f3e MC |
451 | return 0; |
452 | } | |
28ba2541 | 453 | |
bfb0641f | 454 | ctx = EVP_MD_CTX_new(); |
6e59a892 | 455 | if (ctx == NULL) { |
d4d2f3a4 MC |
456 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
457 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
458 | return 0; |
459 | } | |
555cbb32 | 460 | if (!EVP_MD_CTX_copy_ex(ctx, s->s3.handshake_dgst)) { |
d4d2f3a4 MC |
461 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
462 | ERR_R_INTERNAL_ERROR); | |
7d0effea AP |
463 | ret = 0; |
464 | goto err; | |
d356dc56 | 465 | } |
28ba2541 | 466 | |
6e59a892 | 467 | ret = EVP_MD_CTX_size(ctx); |
28ba2541 | 468 | if (ret < 0) { |
d4d2f3a4 MC |
469 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, |
470 | ERR_R_INTERNAL_ERROR); | |
7d0effea AP |
471 | ret = 0; |
472 | goto err; | |
28ba2541 | 473 | } |
0f113f3e | 474 | |
d5e5e2ff SL |
475 | if (sender != NULL) { |
476 | OSSL_PARAM digest_cmd_params[3]; | |
477 | ||
478 | ssl3_digest_master_key_set_params(s->session, digest_cmd_params); | |
83b4a243 | 479 | |
d5e5e2ff SL |
480 | if (EVP_DigestUpdate(ctx, sender, len) <= 0 |
481 | || EVP_MD_CTX_set_params(ctx, digest_cmd_params) <= 0 | |
482 | || EVP_DigestFinal_ex(ctx, p, NULL) <= 0) { | |
483 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_FINAL_FINISH_MAC, | |
484 | ERR_R_INTERNAL_ERROR); | |
485 | ret = 0; | |
486 | } | |
5f3d93e4 | 487 | } |
0f113f3e | 488 | |
7d0effea | 489 | err: |
bfb0641f | 490 | EVP_MD_CTX_free(ctx); |
0f113f3e | 491 | |
28ba2541 | 492 | return ret; |
0f113f3e | 493 | } |
d02b48c6 | 494 | |
6b691a5c | 495 | int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, |
8c1a5343 | 496 | size_t len, size_t *secret_size) |
0f113f3e MC |
497 | { |
498 | static const unsigned char *salt[3] = { | |
ca570cfd | 499 | #ifndef CHARSET_EBCDIC |
0f113f3e MC |
500 | (const unsigned char *)"A", |
501 | (const unsigned char *)"BB", | |
502 | (const unsigned char *)"CCC", | |
ca570cfd | 503 | #else |
0f113f3e MC |
504 | (const unsigned char *)"\x41", |
505 | (const unsigned char *)"\x42\x42", | |
506 | (const unsigned char *)"\x43\x43\x43", | |
ca570cfd | 507 | #endif |
0f113f3e MC |
508 | }; |
509 | unsigned char buf[EVP_MAX_MD_SIZE]; | |
bfb0641f | 510 | EVP_MD_CTX *ctx = EVP_MD_CTX_new(); |
8c1a5343 | 511 | int i, ret = 1; |
0f113f3e | 512 | unsigned int n; |
8c1a5343 | 513 | size_t ret_secret_size = 0; |
d02b48c6 | 514 | |
6e59a892 | 515 | if (ctx == NULL) { |
f63a17d6 MC |
516 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_GENERATE_MASTER_SECRET, |
517 | ERR_R_MALLOC_FAILURE); | |
6e59a892 RL |
518 | return 0; |
519 | } | |
0f113f3e | 520 | for (i = 0; i < 3; i++) { |
6e59a892 | 521 | if (EVP_DigestInit_ex(ctx, s->ctx->sha1, NULL) <= 0 |
a230b26e EK |
522 | || EVP_DigestUpdate(ctx, salt[i], |
523 | strlen((const char *)salt[i])) <= 0 | |
524 | || EVP_DigestUpdate(ctx, p, len) <= 0 | |
555cbb32 | 525 | || EVP_DigestUpdate(ctx, &(s->s3.client_random[0]), |
a230b26e | 526 | SSL3_RANDOM_SIZE) <= 0 |
555cbb32 | 527 | || EVP_DigestUpdate(ctx, &(s->s3.server_random[0]), |
a230b26e | 528 | SSL3_RANDOM_SIZE) <= 0 |
8c1a5343 | 529 | /* TODO(size_t) : convert me */ |
a230b26e EK |
530 | || EVP_DigestFinal_ex(ctx, buf, &n) <= 0 |
531 | || EVP_DigestInit_ex(ctx, s->ctx->md5, NULL) <= 0 | |
532 | || EVP_DigestUpdate(ctx, p, len) <= 0 | |
533 | || EVP_DigestUpdate(ctx, buf, n) <= 0 | |
534 | || EVP_DigestFinal_ex(ctx, out, &n) <= 0) { | |
f63a17d6 MC |
535 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
536 | SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR); | |
5f3d93e4 MC |
537 | ret = 0; |
538 | break; | |
539 | } | |
0f113f3e | 540 | out += n; |
8c1a5343 | 541 | ret_secret_size += n; |
0f113f3e | 542 | } |
bfb0641f | 543 | EVP_MD_CTX_free(ctx); |
1cf218bc | 544 | |
e0f9bf1d | 545 | OPENSSL_cleanse(buf, sizeof(buf)); |
8c1a5343 MC |
546 | if (ret) |
547 | *secret_size = ret_secret_size; | |
548 | return ret; | |
0f113f3e | 549 | } |
d02b48c6 | 550 | |
6b691a5c | 551 | int ssl3_alert_code(int code) |
0f113f3e MC |
552 | { |
553 | switch (code) { | |
554 | case SSL_AD_CLOSE_NOTIFY: | |
26a7d938 | 555 | return SSL3_AD_CLOSE_NOTIFY; |
0f113f3e | 556 | case SSL_AD_UNEXPECTED_MESSAGE: |
26a7d938 | 557 | return SSL3_AD_UNEXPECTED_MESSAGE; |
0f113f3e | 558 | case SSL_AD_BAD_RECORD_MAC: |
26a7d938 | 559 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 560 | case SSL_AD_DECRYPTION_FAILED: |
26a7d938 | 561 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 562 | case SSL_AD_RECORD_OVERFLOW: |
26a7d938 | 563 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 564 | case SSL_AD_DECOMPRESSION_FAILURE: |
26a7d938 | 565 | return SSL3_AD_DECOMPRESSION_FAILURE; |
0f113f3e | 566 | case SSL_AD_HANDSHAKE_FAILURE: |
26a7d938 | 567 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 568 | case SSL_AD_NO_CERTIFICATE: |
26a7d938 | 569 | return SSL3_AD_NO_CERTIFICATE; |
0f113f3e | 570 | case SSL_AD_BAD_CERTIFICATE: |
26a7d938 | 571 | return SSL3_AD_BAD_CERTIFICATE; |
0f113f3e | 572 | case SSL_AD_UNSUPPORTED_CERTIFICATE: |
26a7d938 | 573 | return SSL3_AD_UNSUPPORTED_CERTIFICATE; |
0f113f3e | 574 | case SSL_AD_CERTIFICATE_REVOKED: |
26a7d938 | 575 | return SSL3_AD_CERTIFICATE_REVOKED; |
0f113f3e | 576 | case SSL_AD_CERTIFICATE_EXPIRED: |
26a7d938 | 577 | return SSL3_AD_CERTIFICATE_EXPIRED; |
0f113f3e | 578 | case SSL_AD_CERTIFICATE_UNKNOWN: |
26a7d938 | 579 | return SSL3_AD_CERTIFICATE_UNKNOWN; |
0f113f3e | 580 | case SSL_AD_ILLEGAL_PARAMETER: |
26a7d938 | 581 | return SSL3_AD_ILLEGAL_PARAMETER; |
0f113f3e | 582 | case SSL_AD_UNKNOWN_CA: |
26a7d938 | 583 | return SSL3_AD_BAD_CERTIFICATE; |
0f113f3e | 584 | case SSL_AD_ACCESS_DENIED: |
26a7d938 | 585 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 586 | case SSL_AD_DECODE_ERROR: |
26a7d938 | 587 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 588 | case SSL_AD_DECRYPT_ERROR: |
26a7d938 | 589 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 590 | case SSL_AD_EXPORT_RESTRICTION: |
26a7d938 | 591 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 592 | case SSL_AD_PROTOCOL_VERSION: |
26a7d938 | 593 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 594 | case SSL_AD_INSUFFICIENT_SECURITY: |
26a7d938 | 595 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 596 | case SSL_AD_INTERNAL_ERROR: |
26a7d938 | 597 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 598 | case SSL_AD_USER_CANCELLED: |
26a7d938 | 599 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 600 | case SSL_AD_NO_RENEGOTIATION: |
26a7d938 | 601 | return -1; /* Don't send it :-) */ |
0f113f3e | 602 | case SSL_AD_UNSUPPORTED_EXTENSION: |
26a7d938 | 603 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 604 | case SSL_AD_CERTIFICATE_UNOBTAINABLE: |
26a7d938 | 605 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 606 | case SSL_AD_UNRECOGNIZED_NAME: |
26a7d938 | 607 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 608 | case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: |
26a7d938 | 609 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 610 | case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: |
26a7d938 | 611 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 612 | case SSL_AD_UNKNOWN_PSK_IDENTITY: |
26a7d938 | 613 | return TLS1_AD_UNKNOWN_PSK_IDENTITY; |
0f113f3e | 614 | case SSL_AD_INAPPROPRIATE_FALLBACK: |
26a7d938 | 615 | return TLS1_AD_INAPPROPRIATE_FALLBACK; |
06217867 | 616 | case SSL_AD_NO_APPLICATION_PROTOCOL: |
26a7d938 | 617 | return TLS1_AD_NO_APPLICATION_PROTOCOL; |
42c28b63 MC |
618 | case SSL_AD_CERTIFICATE_REQUIRED: |
619 | return SSL_AD_HANDSHAKE_FAILURE; | |
0f113f3e | 620 | default: |
26a7d938 | 621 | return -1; |
0f113f3e MC |
622 | } |
623 | } |