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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. | |
82b0bf0b | 3 | * |
846e33c7 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
82b0bf0b | 8 | */ |
846e33c7 | 9 | |
ddac1974 NL |
10 | /* ==================================================================== |
11 | * Copyright 2005 Nokia. All rights reserved. | |
12 | * | |
13 | * The portions of the attached software ("Contribution") is developed by | |
14 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source | |
15 | * license. | |
16 | * | |
17 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of | |
18 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites | |
19 | * support (see RFC 4279) to OpenSSL. | |
20 | * | |
21 | * No patent licenses or other rights except those expressly stated in | |
22 | * the OpenSSL open source license shall be deemed granted or received | |
23 | * expressly, by implication, estoppel, or otherwise. | |
24 | * | |
25 | * No assurances are provided by Nokia that the Contribution does not | |
26 | * infringe the patent or other intellectual property rights of any third | |
27 | * party or that the license provides you with all the necessary rights | |
28 | * to make use of the Contribution. | |
29 | * | |
30 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN | |
31 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA | |
32 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY | |
33 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR | |
34 | * OTHERWISE. | |
35 | */ | |
58964a49 RE |
36 | |
37 | #include <stdio.h> | |
7b63c0fa | 38 | #include "ssl_locl.h" |
3c27208f | 39 | #include <openssl/comp.h> |
ec577822 | 40 | #include <openssl/evp.h> |
b7d60e76 | 41 | #include <openssl/kdf.h> |
637f374a | 42 | #include <openssl/rand.h> |
58964a49 | 43 | |
b7d60e76 | 44 | /* seed1 through seed5 are concatenated */ |
28ba2541 | 45 | static int tls1_PRF(SSL *s, |
6db6bc5a MC |
46 | const void *seed1, size_t seed1_len, |
47 | const void *seed2, size_t seed2_len, | |
48 | const void *seed3, size_t seed3_len, | |
49 | const void *seed4, size_t seed4_len, | |
50 | const void *seed5, size_t seed5_len, | |
51 | const unsigned char *sec, size_t slen, | |
52 | unsigned char *out, size_t olen) | |
0f113f3e | 53 | { |
28ba2541 | 54 | const EVP_MD *md = ssl_prf_md(s); |
b7d60e76 DSH |
55 | EVP_PKEY_CTX *pctx = NULL; |
56 | ||
57 | int ret = 0; | |
0f113f3e | 58 | |
28ba2541 | 59 | if (md == NULL) { |
668f6f08 MC |
60 | /* Should never happen */ |
61 | SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR); | |
28ba2541 | 62 | return 0; |
668f6f08 | 63 | } |
b7d60e76 DSH |
64 | pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_TLS1_PRF, NULL); |
65 | if (pctx == NULL || EVP_PKEY_derive_init(pctx) <= 0 | |
66 | || EVP_PKEY_CTX_set_tls1_prf_md(pctx, md) <= 0 | |
348240c6 | 67 | || EVP_PKEY_CTX_set1_tls1_prf_secret(pctx, sec, (int)slen) <= 0) |
b7d60e76 | 68 | goto err; |
28ba2541 | 69 | |
348240c6 | 70 | if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed1, (int)seed1_len) <= 0) |
b7d60e76 | 71 | goto err; |
348240c6 | 72 | if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed2, (int)seed2_len) <= 0) |
b7d60e76 | 73 | goto err; |
348240c6 | 74 | if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed3, (int)seed3_len) <= 0) |
b7d60e76 | 75 | goto err; |
348240c6 | 76 | if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed4, (int)seed4_len) <= 0) |
b7d60e76 | 77 | goto err; |
348240c6 | 78 | if (EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed5, (int)seed5_len) <= 0) |
b7d60e76 DSH |
79 | goto err; |
80 | ||
6db6bc5a | 81 | if (EVP_PKEY_derive(pctx, out, &olen) <= 0) |
b7d60e76 DSH |
82 | goto err; |
83 | ret = 1; | |
84 | ||
a230b26e | 85 | err: |
b7d60e76 DSH |
86 | EVP_PKEY_CTX_free(pctx); |
87 | return ret; | |
81025661 | 88 | } |
0f113f3e | 89 | |
8c1a5343 | 90 | static int tls1_generate_key_block(SSL *s, unsigned char *km, size_t num) |
0f113f3e MC |
91 | { |
92 | int ret; | |
28ba2541 | 93 | ret = tls1_PRF(s, |
0f113f3e MC |
94 | TLS_MD_KEY_EXPANSION_CONST, |
95 | TLS_MD_KEY_EXPANSION_CONST_SIZE, s->s3->server_random, | |
96 | SSL3_RANDOM_SIZE, s->s3->client_random, SSL3_RANDOM_SIZE, | |
97 | NULL, 0, NULL, 0, s->session->master_key, | |
b7d60e76 | 98 | s->session->master_key_length, km, num); |
55a9a16f | 99 | |
0f113f3e MC |
100 | return ret; |
101 | } | |
58964a49 | 102 | |
6b691a5c | 103 | int tls1_change_cipher_state(SSL *s, int which) |
0f113f3e | 104 | { |
0f113f3e | 105 | unsigned char *p, *mac_secret; |
0f113f3e MC |
106 | unsigned char tmp1[EVP_MAX_KEY_LENGTH]; |
107 | unsigned char tmp2[EVP_MAX_KEY_LENGTH]; | |
108 | unsigned char iv1[EVP_MAX_IV_LENGTH * 2]; | |
109 | unsigned char iv2[EVP_MAX_IV_LENGTH * 2]; | |
110 | unsigned char *ms, *key, *iv; | |
0f113f3e MC |
111 | EVP_CIPHER_CTX *dd; |
112 | const EVP_CIPHER *c; | |
09b6c2ef | 113 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 114 | const SSL_COMP *comp; |
09b6c2ef | 115 | #endif |
0f113f3e MC |
116 | const EVP_MD *m; |
117 | int mac_type; | |
b43d1cbb | 118 | size_t *mac_secret_size; |
0f113f3e MC |
119 | EVP_MD_CTX *mac_ctx; |
120 | EVP_PKEY *mac_key; | |
b43d1cbb | 121 | size_t n, i, j, k, cl; |
0f113f3e MC |
122 | int reuse_dd = 0; |
123 | ||
0f113f3e MC |
124 | c = s->s3->tmp.new_sym_enc; |
125 | m = s->s3->tmp.new_hash; | |
126 | mac_type = s->s3->tmp.new_mac_pkey_type; | |
09b6c2ef | 127 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 128 | comp = s->s3->tmp.new_compression; |
09b6c2ef | 129 | #endif |
58964a49 | 130 | |
0f113f3e | 131 | if (which & SSL3_CC_READ) { |
28a31a0a MC |
132 | if (s->ext.use_etm) |
133 | s->s3->flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC_READ; | |
134 | else | |
135 | s->s3->flags &= ~TLS1_FLAGS_ENCRYPT_THEN_MAC_READ; | |
136 | ||
0f113f3e MC |
137 | if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) |
138 | s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM; | |
139 | else | |
140 | s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM; | |
141 | ||
142 | if (s->enc_read_ctx != NULL) | |
143 | reuse_dd = 1; | |
846ec07d | 144 | else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) |
0f113f3e MC |
145 | goto err; |
146 | else | |
147 | /* | |
f430ba31 | 148 | * make sure it's initialised in case we exit later with an error |
0f113f3e | 149 | */ |
846ec07d | 150 | EVP_CIPHER_CTX_reset(s->enc_read_ctx); |
0f113f3e MC |
151 | dd = s->enc_read_ctx; |
152 | mac_ctx = ssl_replace_hash(&s->read_hash, NULL); | |
5f3d93e4 MC |
153 | if (mac_ctx == NULL) |
154 | goto err; | |
09b6c2ef | 155 | #ifndef OPENSSL_NO_COMP |
efa7dd64 RS |
156 | COMP_CTX_free(s->expand); |
157 | s->expand = NULL; | |
0f113f3e MC |
158 | if (comp != NULL) { |
159 | s->expand = COMP_CTX_new(comp->method); | |
160 | if (s->expand == NULL) { | |
161 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
162 | SSL_R_COMPRESSION_LIBRARY_ERROR); | |
163 | goto err2; | |
164 | } | |
0f113f3e | 165 | } |
09b6c2ef | 166 | #endif |
0f113f3e | 167 | /* |
d5d0a1cb | 168 | * this is done by dtls1_reset_seq_numbers for DTLS |
0f113f3e | 169 | */ |
d5d0a1cb | 170 | if (!SSL_IS_DTLS(s)) |
de07f311 | 171 | RECORD_LAYER_reset_read_sequence(&s->rlayer); |
0f113f3e MC |
172 | mac_secret = &(s->s3->read_mac_secret[0]); |
173 | mac_secret_size = &(s->s3->read_mac_secret_size); | |
174 | } else { | |
28a31a0a MC |
175 | if (s->ext.use_etm) |
176 | s->s3->flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE; | |
177 | else | |
178 | s->s3->flags &= ~TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE; | |
179 | ||
0f113f3e MC |
180 | if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) |
181 | s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM; | |
182 | else | |
183 | s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM; | |
184 | if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s)) | |
185 | reuse_dd = 1; | |
186 | else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) | |
187 | goto err; | |
188 | dd = s->enc_write_ctx; | |
189 | if (SSL_IS_DTLS(s)) { | |
bfb0641f | 190 | mac_ctx = EVP_MD_CTX_new(); |
5f3d93e4 | 191 | if (mac_ctx == NULL) |
0f113f3e MC |
192 | goto err; |
193 | s->write_hash = mac_ctx; | |
5f3d93e4 | 194 | } else { |
0f113f3e | 195 | mac_ctx = ssl_replace_hash(&s->write_hash, NULL); |
5f3d93e4 MC |
196 | if (mac_ctx == NULL) |
197 | goto err; | |
198 | } | |
09b6c2ef | 199 | #ifndef OPENSSL_NO_COMP |
efa7dd64 RS |
200 | COMP_CTX_free(s->compress); |
201 | s->compress = NULL; | |
0f113f3e MC |
202 | if (comp != NULL) { |
203 | s->compress = COMP_CTX_new(comp->method); | |
204 | if (s->compress == NULL) { | |
205 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
206 | SSL_R_COMPRESSION_LIBRARY_ERROR); | |
207 | goto err2; | |
208 | } | |
209 | } | |
09b6c2ef | 210 | #endif |
0f113f3e | 211 | /* |
d5d0a1cb | 212 | * this is done by dtls1_reset_seq_numbers for DTLS |
0f113f3e | 213 | */ |
d5d0a1cb | 214 | if (!SSL_IS_DTLS(s)) |
de07f311 | 215 | RECORD_LAYER_reset_write_sequence(&s->rlayer); |
0f113f3e MC |
216 | mac_secret = &(s->s3->write_mac_secret[0]); |
217 | mac_secret_size = &(s->s3->write_mac_secret_size); | |
218 | } | |
219 | ||
220 | if (reuse_dd) | |
846ec07d | 221 | EVP_CIPHER_CTX_reset(dd); |
0f113f3e MC |
222 | |
223 | p = s->s3->tmp.key_block; | |
224 | i = *mac_secret_size = s->s3->tmp.new_mac_secret_size; | |
225 | ||
b43d1cbb | 226 | /* TODO(size_t): convert me */ |
0f113f3e | 227 | cl = EVP_CIPHER_key_length(c); |
361a1191 | 228 | j = cl; |
0f113f3e | 229 | /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */ |
e75c5a79 | 230 | /* If GCM/CCM mode only part of IV comes from PRF */ |
0f113f3e MC |
231 | if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) |
232 | k = EVP_GCM_TLS_FIXED_IV_LEN; | |
e75c5a79 DSH |
233 | else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE) |
234 | k = EVP_CCM_TLS_FIXED_IV_LEN; | |
0f113f3e MC |
235 | else |
236 | k = EVP_CIPHER_iv_length(c); | |
237 | if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || | |
238 | (which == SSL3_CHANGE_CIPHER_SERVER_READ)) { | |
239 | ms = &(p[0]); | |
240 | n = i + i; | |
241 | key = &(p[n]); | |
242 | n += j + j; | |
243 | iv = &(p[n]); | |
244 | n += k + k; | |
0f113f3e MC |
245 | } else { |
246 | n = i; | |
247 | ms = &(p[n]); | |
248 | n += i + j; | |
249 | key = &(p[n]); | |
250 | n += j + k; | |
251 | iv = &(p[n]); | |
252 | n += k; | |
0f113f3e MC |
253 | } |
254 | ||
255 | if (n > s->s3->tmp.key_block_length) { | |
256 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); | |
257 | goto err2; | |
258 | } | |
259 | ||
260 | memcpy(mac_secret, ms, i); | |
261 | ||
262 | if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) { | |
348240c6 | 263 | /* TODO(size_t): Convert this function */ |
0f113f3e | 264 | mac_key = EVP_PKEY_new_mac_key(mac_type, NULL, |
348240c6 | 265 | mac_secret, (int)*mac_secret_size); |
5f3d93e4 | 266 | if (mac_key == NULL |
a230b26e | 267 | || EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key) <= 0) { |
5f3d93e4 MC |
268 | EVP_PKEY_free(mac_key); |
269 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); | |
270 | goto err2; | |
271 | } | |
0f113f3e MC |
272 | EVP_PKEY_free(mac_key); |
273 | } | |
d63a5e5e | 274 | #ifdef SSL_DEBUG |
0f113f3e MC |
275 | printf("which = %04X\nmac key=", which); |
276 | { | |
2b7363ec | 277 | size_t z; |
0f113f3e MC |
278 | for (z = 0; z < i; z++) |
279 | printf("%02X%c", ms[z], ((z + 1) % 16) ? ' ' : '\n'); | |
280 | } | |
58964a49 | 281 | #endif |
0f113f3e MC |
282 | |
283 | if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) { | |
eadf70d2 | 284 | if (!EVP_CipherInit_ex(dd, c, NULL, key, NULL, (which & SSL3_CC_WRITE)) |
348240c6 MC |
285 | || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GCM_SET_IV_FIXED, (int)k, |
286 | iv)) { | |
eadf70d2 MC |
287 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); |
288 | goto err2; | |
289 | } | |
e75c5a79 | 290 | } else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE) { |
3d3701ea | 291 | int taglen; |
a230b26e EK |
292 | if (s->s3->tmp. |
293 | new_cipher->algorithm_enc & (SSL_AES128CCM8 | SSL_AES256CCM8)) | |
ec07b1d8 | 294 | taglen = EVP_CCM8_TLS_TAG_LEN; |
3d3701ea | 295 | else |
ec07b1d8 | 296 | taglen = EVP_CCM_TLS_TAG_LEN; |
e75c5a79 DSH |
297 | if (!EVP_CipherInit_ex(dd, c, NULL, NULL, NULL, (which & SSL3_CC_WRITE)) |
298 | || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_IVLEN, 12, NULL) | |
299 | || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_TAG, taglen, NULL) | |
348240c6 | 300 | || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_CCM_SET_IV_FIXED, (int)k, iv) |
e75c5a79 DSH |
301 | || !EVP_CipherInit_ex(dd, NULL, NULL, key, NULL, -1)) { |
302 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); | |
303 | goto err2; | |
304 | } | |
eadf70d2 MC |
305 | } else { |
306 | if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) { | |
307 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); | |
308 | goto err2; | |
309 | } | |
310 | } | |
0f113f3e | 311 | /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */ |
eadf70d2 MC |
312 | if ((EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER) && *mac_secret_size |
313 | && !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_MAC_KEY, | |
348240c6 | 314 | (int)*mac_secret_size, mac_secret)) { |
eadf70d2 MC |
315 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR); |
316 | goto err2; | |
317 | } | |
1cf218bc | 318 | |
d63a5e5e | 319 | #ifdef SSL_DEBUG |
0f113f3e MC |
320 | printf("which = %04X\nkey=", which); |
321 | { | |
322 | int z; | |
323 | for (z = 0; z < EVP_CIPHER_key_length(c); z++) | |
324 | printf("%02X%c", key[z], ((z + 1) % 16) ? ' ' : '\n'); | |
325 | } | |
326 | printf("\niv="); | |
327 | { | |
2b7363ec | 328 | size_t z; |
0f113f3e MC |
329 | for (z = 0; z < k; z++) |
330 | printf("%02X%c", iv[z], ((z + 1) % 16) ? ' ' : '\n'); | |
331 | } | |
332 | printf("\n"); | |
58964a49 RE |
333 | #endif |
334 | ||
0f113f3e MC |
335 | OPENSSL_cleanse(tmp1, sizeof(tmp1)); |
336 | OPENSSL_cleanse(tmp2, sizeof(tmp1)); | |
337 | OPENSSL_cleanse(iv1, sizeof(iv1)); | |
338 | OPENSSL_cleanse(iv2, sizeof(iv2)); | |
339 | return (1); | |
340 | err: | |
341 | SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_MALLOC_FAILURE); | |
342 | err2: | |
e0f9bf1d RS |
343 | OPENSSL_cleanse(tmp1, sizeof(tmp1)); |
344 | OPENSSL_cleanse(tmp2, sizeof(tmp1)); | |
345 | OPENSSL_cleanse(iv1, sizeof(iv1)); | |
346 | OPENSSL_cleanse(iv2, sizeof(iv2)); | |
0f113f3e MC |
347 | return (0); |
348 | } | |
58964a49 | 349 | |
6b691a5c | 350 | int tls1_setup_key_block(SSL *s) |
0f113f3e | 351 | { |
b7d60e76 | 352 | unsigned char *p; |
0f113f3e MC |
353 | const EVP_CIPHER *c; |
354 | const EVP_MD *hash; | |
0f113f3e | 355 | SSL_COMP *comp; |
8c1a5343 MC |
356 | int mac_type = NID_undef; |
357 | size_t num, mac_secret_size = 0; | |
0f113f3e | 358 | int ret = 0; |
58964a49 | 359 | |
0f113f3e MC |
360 | if (s->s3->tmp.key_block_length != 0) |
361 | return (1); | |
362 | ||
28a31a0a MC |
363 | if (!ssl_cipher_get_evp(s->session, &c, &hash, &mac_type, &mac_secret_size, |
364 | &comp, s->ext.use_etm)) { | |
0f113f3e MC |
365 | SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, SSL_R_CIPHER_OR_HASH_UNAVAILABLE); |
366 | return (0); | |
367 | } | |
368 | ||
369 | s->s3->tmp.new_sym_enc = c; | |
370 | s->s3->tmp.new_hash = hash; | |
371 | s->s3->tmp.new_mac_pkey_type = mac_type; | |
372 | s->s3->tmp.new_mac_secret_size = mac_secret_size; | |
a230b26e | 373 | num = EVP_CIPHER_key_length(c) + mac_secret_size + EVP_CIPHER_iv_length(c); |
0f113f3e MC |
374 | num *= 2; |
375 | ||
376 | ssl3_cleanup_key_block(s); | |
377 | ||
b7d60e76 | 378 | if ((p = OPENSSL_malloc(num)) == NULL) { |
0f113f3e MC |
379 | SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE); |
380 | goto err; | |
381 | } | |
382 | ||
383 | s->s3->tmp.key_block_length = num; | |
b7d60e76 | 384 | s->s3->tmp.key_block = p; |
0f113f3e | 385 | |
d63a5e5e | 386 | #ifdef SSL_DEBUG |
0f113f3e MC |
387 | printf("client random\n"); |
388 | { | |
389 | int z; | |
390 | for (z = 0; z < SSL3_RANDOM_SIZE; z++) | |
391 | printf("%02X%c", s->s3->client_random[z], | |
392 | ((z + 1) % 16) ? ' ' : '\n'); | |
393 | } | |
394 | printf("server random\n"); | |
395 | { | |
396 | int z; | |
397 | for (z = 0; z < SSL3_RANDOM_SIZE; z++) | |
398 | printf("%02X%c", s->s3->server_random[z], | |
399 | ((z + 1) % 16) ? ' ' : '\n'); | |
400 | } | |
401 | printf("master key\n"); | |
402 | { | |
8c1a5343 | 403 | size_t z; |
0f113f3e MC |
404 | for (z = 0; z < s->session->master_key_length; z++) |
405 | printf("%02X%c", s->session->master_key[z], | |
406 | ((z + 1) % 16) ? ' ' : '\n'); | |
407 | } | |
58964a49 | 408 | #endif |
b7d60e76 | 409 | if (!tls1_generate_key_block(s, p, num)) |
0f113f3e | 410 | goto err; |
d63a5e5e | 411 | #ifdef SSL_DEBUG |
0f113f3e MC |
412 | printf("\nkey block\n"); |
413 | { | |
8c1a5343 | 414 | size_t z; |
0f113f3e | 415 | for (z = 0; z < num; z++) |
d1776fde | 416 | printf("%02X%c", p[z], ((z + 1) % 16) ? ' ' : '\n'); |
0f113f3e | 417 | } |
58964a49 RE |
418 | #endif |
419 | ||
0f113f3e MC |
420 | if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS) |
421 | && s->method->version <= TLS1_VERSION) { | |
422 | /* | |
423 | * enable vulnerability countermeasure for CBC ciphers with known-IV | |
424 | * problem (http://www.openssl.org/~bodo/tls-cbc.txt) | |
425 | */ | |
426 | s->s3->need_empty_fragments = 1; | |
427 | ||
428 | if (s->session->cipher != NULL) { | |
429 | if (s->session->cipher->algorithm_enc == SSL_eNULL) | |
430 | s->s3->need_empty_fragments = 0; | |
431 | ||
d1d0be3c | 432 | #ifndef OPENSSL_NO_RC4 |
0f113f3e MC |
433 | if (s->session->cipher->algorithm_enc == SSL_RC4) |
434 | s->s3->need_empty_fragments = 0; | |
82b0bf0b | 435 | #endif |
0f113f3e MC |
436 | } |
437 | } | |
438 | ||
439 | ret = 1; | |
440 | err: | |
0f113f3e MC |
441 | return (ret); |
442 | } | |
58964a49 | 443 | |
6db6bc5a MC |
444 | size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen, |
445 | unsigned char *out) | |
0f113f3e | 446 | { |
8c1a5343 | 447 | size_t hashlen; |
28ba2541 | 448 | unsigned char hash[EVP_MAX_MD_SIZE]; |
0f113f3e | 449 | |
124037fd DSH |
450 | if (!ssl3_digest_cached_records(s, 0)) |
451 | return 0; | |
0f113f3e | 452 | |
8c1a5343 | 453 | if (!ssl_handshake_hash(s, hash, sizeof(hash), &hashlen)) |
48fbcbac | 454 | return 0; |
0f113f3e | 455 | |
b7d60e76 | 456 | if (!tls1_PRF(s, str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0, |
0f113f3e | 457 | s->session->master_key, s->session->master_key_length, |
b7d60e76 | 458 | out, TLS1_FINISH_MAC_LENGTH)) |
0f113f3e | 459 | return 0; |
c9dd49a7 | 460 | OPENSSL_cleanse(hash, hashlen); |
b7d60e76 | 461 | return TLS1_FINISH_MAC_LENGTH; |
0f113f3e | 462 | } |
58964a49 | 463 | |
6b691a5c | 464 | int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, |
8c1a5343 | 465 | size_t len, size_t *secret_size) |
0f113f3e | 466 | { |
329114f9 | 467 | if (s->session->flags & SSL_SESS_FLAG_EXTMS) { |
0cfb0e75 | 468 | unsigned char hash[EVP_MAX_MD_SIZE * 2]; |
8c1a5343 | 469 | size_t hashlen; |
a230b26e EK |
470 | /* |
471 | * Digest cached records keeping record buffer (if present): this wont | |
472 | * affect client auth because we're freezing the buffer at the same | |
473 | * point (after client key exchange and before certificate verify) | |
124037fd DSH |
474 | */ |
475 | if (!ssl3_digest_cached_records(s, 1)) | |
8c1a5343 MC |
476 | return 0; |
477 | if(!ssl_handshake_hash(s, hash, sizeof(hash), &hashlen)) | |
478 | return 0; | |
0cfb0e75 DSH |
479 | #ifdef SSL_DEBUG |
480 | fprintf(stderr, "Handshake hashes:\n"); | |
481 | BIO_dump_fp(stderr, (char *)hash, hashlen); | |
482 | #endif | |
28ba2541 | 483 | tls1_PRF(s, |
0cfb0e75 DSH |
484 | TLS_MD_EXTENDED_MASTER_SECRET_CONST, |
485 | TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE, | |
486 | hash, hashlen, | |
0cfb0e75 | 487 | NULL, 0, |
3d47c1d3 | 488 | NULL, 0, |
b7d60e76 DSH |
489 | NULL, 0, p, len, s->session->master_key, |
490 | SSL3_MASTER_SECRET_SIZE); | |
0cfb0e75 DSH |
491 | OPENSSL_cleanse(hash, hashlen); |
492 | } else { | |
28ba2541 | 493 | tls1_PRF(s, |
0cfb0e75 DSH |
494 | TLS_MD_MASTER_SECRET_CONST, |
495 | TLS_MD_MASTER_SECRET_CONST_SIZE, | |
496 | s->s3->client_random, SSL3_RANDOM_SIZE, | |
3d47c1d3 | 497 | NULL, 0, |
0cfb0e75 | 498 | s->s3->server_random, SSL3_RANDOM_SIZE, |
b7d60e76 DSH |
499 | NULL, 0, p, len, s->session->master_key, |
500 | SSL3_MASTER_SECRET_SIZE); | |
0cfb0e75 | 501 | } |
a2f9200f | 502 | #ifdef SSL_DEBUG |
0f113f3e MC |
503 | fprintf(stderr, "Premaster Secret:\n"); |
504 | BIO_dump_fp(stderr, (char *)p, len); | |
505 | fprintf(stderr, "Client Random:\n"); | |
506 | BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE); | |
507 | fprintf(stderr, "Server Random:\n"); | |
508 | BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE); | |
509 | fprintf(stderr, "Master Secret:\n"); | |
510 | BIO_dump_fp(stderr, (char *)s->session->master_key, | |
511 | SSL3_MASTER_SECRET_SIZE); | |
a2f9200f | 512 | #endif |
761772d7 | 513 | |
8c1a5343 MC |
514 | *secret_size = SSL3_MASTER_SECRET_SIZE; |
515 | return 1; | |
0f113f3e | 516 | } |
58964a49 | 517 | |
74b4b494 | 518 | int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, |
0f113f3e MC |
519 | const char *label, size_t llen, |
520 | const unsigned char *context, | |
521 | size_t contextlen, int use_context) | |
522 | { | |
0f113f3e | 523 | unsigned char *val = NULL; |
1c8a527c | 524 | size_t vallen = 0, currentvalpos; |
0f113f3e | 525 | int rv; |
e0af0405 | 526 | |
0f113f3e MC |
527 | /* |
528 | * construct PRF arguments we construct the PRF argument ourself rather | |
529 | * than passing separate values into the TLS PRF to ensure that the | |
530 | * concatenation of values does not create a prohibited label. | |
531 | */ | |
532 | vallen = llen + SSL3_RANDOM_SIZE * 2; | |
533 | if (use_context) { | |
534 | vallen += 2 + contextlen; | |
535 | } | |
536 | ||
537 | val = OPENSSL_malloc(vallen); | |
538 | if (val == NULL) | |
539 | goto err2; | |
540 | currentvalpos = 0; | |
541 | memcpy(val + currentvalpos, (unsigned char *)label, llen); | |
542 | currentvalpos += llen; | |
543 | memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE); | |
544 | currentvalpos += SSL3_RANDOM_SIZE; | |
545 | memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE); | |
546 | currentvalpos += SSL3_RANDOM_SIZE; | |
547 | ||
548 | if (use_context) { | |
549 | val[currentvalpos] = (contextlen >> 8) & 0xff; | |
550 | currentvalpos++; | |
551 | val[currentvalpos] = contextlen & 0xff; | |
552 | currentvalpos++; | |
553 | if ((contextlen > 0) || (context != NULL)) { | |
554 | memcpy(val + currentvalpos, context, contextlen); | |
555 | } | |
556 | } | |
557 | ||
558 | /* | |
559 | * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited | |
560 | * label len) = 15, so size of val > max(prohibited label len) = 15 and | |
561 | * the comparisons won't have buffer overflow | |
562 | */ | |
563 | if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST, | |
564 | TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0) | |
565 | goto err1; | |
566 | if (memcmp(val, TLS_MD_SERVER_FINISH_CONST, | |
567 | TLS_MD_SERVER_FINISH_CONST_SIZE) == 0) | |
568 | goto err1; | |
569 | if (memcmp(val, TLS_MD_MASTER_SECRET_CONST, | |
570 | TLS_MD_MASTER_SECRET_CONST_SIZE) == 0) | |
571 | goto err1; | |
0cfb0e75 DSH |
572 | if (memcmp(val, TLS_MD_EXTENDED_MASTER_SECRET_CONST, |
573 | TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE) == 0) | |
574 | goto err1; | |
0f113f3e MC |
575 | if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST, |
576 | TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0) | |
577 | goto err1; | |
578 | ||
28ba2541 | 579 | rv = tls1_PRF(s, |
0f113f3e MC |
580 | val, vallen, |
581 | NULL, 0, | |
582 | NULL, 0, | |
583 | NULL, 0, | |
584 | NULL, 0, | |
585 | s->session->master_key, s->session->master_key_length, | |
b7d60e76 | 586 | out, olen); |
e0af0405 | 587 | |
0f113f3e MC |
588 | goto ret; |
589 | err1: | |
a230b26e | 590 | SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, SSL_R_TLS_ILLEGAL_EXPORTER_LABEL); |
0f113f3e MC |
591 | rv = 0; |
592 | goto ret; | |
593 | err2: | |
594 | SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE); | |
595 | rv = 0; | |
596 | ret: | |
05c7b163 | 597 | OPENSSL_clear_free(val, vallen); |
0f113f3e MC |
598 | return (rv); |
599 | } | |
e0af0405 | 600 | |
6b691a5c | 601 | int tls1_alert_code(int code) |
0f113f3e MC |
602 | { |
603 | switch (code) { | |
604 | case SSL_AD_CLOSE_NOTIFY: | |
605 | return (SSL3_AD_CLOSE_NOTIFY); | |
606 | case SSL_AD_UNEXPECTED_MESSAGE: | |
607 | return (SSL3_AD_UNEXPECTED_MESSAGE); | |
608 | case SSL_AD_BAD_RECORD_MAC: | |
609 | return (SSL3_AD_BAD_RECORD_MAC); | |
610 | case SSL_AD_DECRYPTION_FAILED: | |
611 | return (TLS1_AD_DECRYPTION_FAILED); | |
612 | case SSL_AD_RECORD_OVERFLOW: | |
613 | return (TLS1_AD_RECORD_OVERFLOW); | |
614 | case SSL_AD_DECOMPRESSION_FAILURE: | |
615 | return (SSL3_AD_DECOMPRESSION_FAILURE); | |
616 | case SSL_AD_HANDSHAKE_FAILURE: | |
617 | return (SSL3_AD_HANDSHAKE_FAILURE); | |
618 | case SSL_AD_NO_CERTIFICATE: | |
619 | return (-1); | |
620 | case SSL_AD_BAD_CERTIFICATE: | |
621 | return (SSL3_AD_BAD_CERTIFICATE); | |
622 | case SSL_AD_UNSUPPORTED_CERTIFICATE: | |
623 | return (SSL3_AD_UNSUPPORTED_CERTIFICATE); | |
624 | case SSL_AD_CERTIFICATE_REVOKED: | |
625 | return (SSL3_AD_CERTIFICATE_REVOKED); | |
626 | case SSL_AD_CERTIFICATE_EXPIRED: | |
627 | return (SSL3_AD_CERTIFICATE_EXPIRED); | |
628 | case SSL_AD_CERTIFICATE_UNKNOWN: | |
629 | return (SSL3_AD_CERTIFICATE_UNKNOWN); | |
630 | case SSL_AD_ILLEGAL_PARAMETER: | |
631 | return (SSL3_AD_ILLEGAL_PARAMETER); | |
632 | case SSL_AD_UNKNOWN_CA: | |
633 | return (TLS1_AD_UNKNOWN_CA); | |
634 | case SSL_AD_ACCESS_DENIED: | |
635 | return (TLS1_AD_ACCESS_DENIED); | |
636 | case SSL_AD_DECODE_ERROR: | |
637 | return (TLS1_AD_DECODE_ERROR); | |
638 | case SSL_AD_DECRYPT_ERROR: | |
639 | return (TLS1_AD_DECRYPT_ERROR); | |
640 | case SSL_AD_EXPORT_RESTRICTION: | |
641 | return (TLS1_AD_EXPORT_RESTRICTION); | |
642 | case SSL_AD_PROTOCOL_VERSION: | |
643 | return (TLS1_AD_PROTOCOL_VERSION); | |
644 | case SSL_AD_INSUFFICIENT_SECURITY: | |
645 | return (TLS1_AD_INSUFFICIENT_SECURITY); | |
646 | case SSL_AD_INTERNAL_ERROR: | |
647 | return (TLS1_AD_INTERNAL_ERROR); | |
648 | case SSL_AD_USER_CANCELLED: | |
649 | return (TLS1_AD_USER_CANCELLED); | |
650 | case SSL_AD_NO_RENEGOTIATION: | |
651 | return (TLS1_AD_NO_RENEGOTIATION); | |
652 | case SSL_AD_UNSUPPORTED_EXTENSION: | |
653 | return (TLS1_AD_UNSUPPORTED_EXTENSION); | |
654 | case SSL_AD_CERTIFICATE_UNOBTAINABLE: | |
655 | return (TLS1_AD_CERTIFICATE_UNOBTAINABLE); | |
656 | case SSL_AD_UNRECOGNIZED_NAME: | |
657 | return (TLS1_AD_UNRECOGNIZED_NAME); | |
658 | case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: | |
659 | return (TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE); | |
660 | case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: | |
661 | return (TLS1_AD_BAD_CERTIFICATE_HASH_VALUE); | |
662 | case SSL_AD_UNKNOWN_PSK_IDENTITY: | |
663 | return (TLS1_AD_UNKNOWN_PSK_IDENTITY); | |
664 | case SSL_AD_INAPPROPRIATE_FALLBACK: | |
665 | return (TLS1_AD_INAPPROPRIATE_FALLBACK); | |
06217867 EK |
666 | case SSL_AD_NO_APPLICATION_PROTOCOL: |
667 | return (TLS1_AD_NO_APPLICATION_PROTOCOL); | |
42c28b63 MC |
668 | case SSL_AD_CERTIFICATE_REQUIRED: |
669 | return SSL_AD_HANDSHAKE_FAILURE; | |
0f113f3e MC |
670 | default: |
671 | return (-1); | |
672 | } | |
673 | } |