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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 | |
58964a49 | 11 | #include <stdio.h> |
7b63c0fa | 12 | #include "ssl_locl.h" |
50ec7505 BP |
13 | #include "record/record_locl.h" |
14 | #include "internal/ktls.h" | |
15 | #include "internal/cryptlib.h" | |
3c27208f | 16 | #include <openssl/comp.h> |
ec577822 | 17 | #include <openssl/evp.h> |
b7d60e76 | 18 | #include <openssl/kdf.h> |
637f374a | 19 | #include <openssl/rand.h> |
50ec7505 | 20 | #include <openssl/obj_mac.h> |
58964a49 | 21 | |
b7d60e76 | 22 | /* seed1 through seed5 are concatenated */ |
28ba2541 | 23 | static int tls1_PRF(SSL *s, |
6db6bc5a MC |
24 | const void *seed1, size_t seed1_len, |
25 | const void *seed2, size_t seed2_len, | |
26 | const void *seed3, size_t seed3_len, | |
27 | const void *seed4, size_t seed4_len, | |
28 | const void *seed5, size_t seed5_len, | |
29 | const unsigned char *sec, size_t slen, | |
d4d2f3a4 | 30 | unsigned char *out, size_t olen, int fatal) |
0f113f3e | 31 | { |
28ba2541 | 32 | const EVP_MD *md = ssl_prf_md(s); |
b7d60e76 | 33 | EVP_PKEY_CTX *pctx = NULL; |
b7d60e76 | 34 | int ret = 0; |
0f113f3e | 35 | |
28ba2541 | 36 | if (md == NULL) { |
668f6f08 | 37 | /* Should never happen */ |
d4d2f3a4 MC |
38 | if (fatal) |
39 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_PRF, | |
40 | ERR_R_INTERNAL_ERROR); | |
41 | else | |
42 | SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR); | |
28ba2541 | 43 | return 0; |
668f6f08 | 44 | } |
b7d60e76 DSH |
45 | pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_TLS1_PRF, NULL); |
46 | if (pctx == NULL || EVP_PKEY_derive_init(pctx) <= 0 | |
47 | || EVP_PKEY_CTX_set_tls1_prf_md(pctx, md) <= 0 | |
d4d2f3a4 MC |
48 | || EVP_PKEY_CTX_set1_tls1_prf_secret(pctx, sec, (int)slen) <= 0 |
49 | || EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed1, (int)seed1_len) <= 0 | |
50 | || EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed2, (int)seed2_len) <= 0 | |
51 | || EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed3, (int)seed3_len) <= 0 | |
52 | || EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed4, (int)seed4_len) <= 0 | |
53 | || EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed5, (int)seed5_len) <= 0 | |
54 | || EVP_PKEY_derive(pctx, out, &olen) <= 0) { | |
55 | if (fatal) | |
56 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_PRF, | |
57 | ERR_R_INTERNAL_ERROR); | |
58 | else | |
59 | SSLerr(SSL_F_TLS1_PRF, ERR_R_INTERNAL_ERROR); | |
b7d60e76 | 60 | goto err; |
d4d2f3a4 | 61 | } |
b7d60e76 | 62 | |
b7d60e76 DSH |
63 | ret = 1; |
64 | ||
a230b26e | 65 | err: |
b7d60e76 DSH |
66 | EVP_PKEY_CTX_free(pctx); |
67 | return ret; | |
81025661 | 68 | } |
0f113f3e | 69 | |
8c1a5343 | 70 | static int tls1_generate_key_block(SSL *s, unsigned char *km, size_t num) |
0f113f3e MC |
71 | { |
72 | int ret; | |
d4d2f3a4 MC |
73 | |
74 | /* Calls SSLfatal() as required */ | |
28ba2541 | 75 | ret = tls1_PRF(s, |
0f113f3e MC |
76 | TLS_MD_KEY_EXPANSION_CONST, |
77 | TLS_MD_KEY_EXPANSION_CONST_SIZE, s->s3->server_random, | |
78 | SSL3_RANDOM_SIZE, s->s3->client_random, SSL3_RANDOM_SIZE, | |
79 | NULL, 0, NULL, 0, s->session->master_key, | |
d4d2f3a4 | 80 | s->session->master_key_length, km, num, 1); |
55a9a16f | 81 | |
0f113f3e MC |
82 | return ret; |
83 | } | |
58964a49 | 84 | |
6b691a5c | 85 | int tls1_change_cipher_state(SSL *s, int which) |
0f113f3e | 86 | { |
0f113f3e | 87 | unsigned char *p, *mac_secret; |
0f113f3e MC |
88 | unsigned char tmp1[EVP_MAX_KEY_LENGTH]; |
89 | unsigned char tmp2[EVP_MAX_KEY_LENGTH]; | |
90 | unsigned char iv1[EVP_MAX_IV_LENGTH * 2]; | |
91 | unsigned char iv2[EVP_MAX_IV_LENGTH * 2]; | |
92 | unsigned char *ms, *key, *iv; | |
0f113f3e MC |
93 | EVP_CIPHER_CTX *dd; |
94 | const EVP_CIPHER *c; | |
09b6c2ef | 95 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 96 | const SSL_COMP *comp; |
09b6c2ef | 97 | #endif |
0f113f3e MC |
98 | const EVP_MD *m; |
99 | int mac_type; | |
b43d1cbb | 100 | size_t *mac_secret_size; |
0f113f3e MC |
101 | EVP_MD_CTX *mac_ctx; |
102 | EVP_PKEY *mac_key; | |
b43d1cbb | 103 | size_t n, i, j, k, cl; |
0f113f3e | 104 | int reuse_dd = 0; |
50ec7505 BP |
105 | #ifndef OPENSSL_NO_KTLS |
106 | struct tls12_crypto_info_aes_gcm_128 crypto_info; | |
107 | BIO *wbio; | |
108 | unsigned char geniv[12]; | |
109 | #endif | |
0f113f3e | 110 | |
0f113f3e MC |
111 | c = s->s3->tmp.new_sym_enc; |
112 | m = s->s3->tmp.new_hash; | |
113 | mac_type = s->s3->tmp.new_mac_pkey_type; | |
09b6c2ef | 114 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 115 | comp = s->s3->tmp.new_compression; |
09b6c2ef | 116 | #endif |
58964a49 | 117 | |
0f113f3e | 118 | if (which & SSL3_CC_READ) { |
28a31a0a MC |
119 | if (s->ext.use_etm) |
120 | s->s3->flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC_READ; | |
121 | else | |
122 | s->s3->flags &= ~TLS1_FLAGS_ENCRYPT_THEN_MAC_READ; | |
123 | ||
0f113f3e MC |
124 | if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) |
125 | s->mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM; | |
126 | else | |
127 | s->mac_flags &= ~SSL_MAC_FLAG_READ_MAC_STREAM; | |
128 | ||
f63a17d6 | 129 | if (s->enc_read_ctx != NULL) { |
0f113f3e | 130 | reuse_dd = 1; |
f63a17d6 MC |
131 | } else if ((s->enc_read_ctx = EVP_CIPHER_CTX_new()) == NULL) { |
132 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
133 | ERR_R_MALLOC_FAILURE); | |
0f113f3e | 134 | goto err; |
f63a17d6 | 135 | } else { |
0f113f3e | 136 | /* |
f430ba31 | 137 | * make sure it's initialised in case we exit later with an error |
0f113f3e | 138 | */ |
846ec07d | 139 | EVP_CIPHER_CTX_reset(s->enc_read_ctx); |
f63a17d6 | 140 | } |
0f113f3e MC |
141 | dd = s->enc_read_ctx; |
142 | mac_ctx = ssl_replace_hash(&s->read_hash, NULL); | |
157af9be MC |
143 | if (mac_ctx == NULL) { |
144 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
145 | ERR_R_INTERNAL_ERROR); | |
5f3d93e4 | 146 | goto err; |
157af9be | 147 | } |
09b6c2ef | 148 | #ifndef OPENSSL_NO_COMP |
efa7dd64 RS |
149 | COMP_CTX_free(s->expand); |
150 | s->expand = NULL; | |
0f113f3e MC |
151 | if (comp != NULL) { |
152 | s->expand = COMP_CTX_new(comp->method); | |
153 | if (s->expand == NULL) { | |
f63a17d6 MC |
154 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
155 | SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
156 | SSL_R_COMPRESSION_LIBRARY_ERROR); | |
157 | goto err; | |
0f113f3e | 158 | } |
0f113f3e | 159 | } |
09b6c2ef | 160 | #endif |
0f113f3e | 161 | /* |
d5d0a1cb | 162 | * this is done by dtls1_reset_seq_numbers for DTLS |
0f113f3e | 163 | */ |
d5d0a1cb | 164 | if (!SSL_IS_DTLS(s)) |
de07f311 | 165 | RECORD_LAYER_reset_read_sequence(&s->rlayer); |
0f113f3e MC |
166 | mac_secret = &(s->s3->read_mac_secret[0]); |
167 | mac_secret_size = &(s->s3->read_mac_secret_size); | |
168 | } else { | |
7426cd34 | 169 | s->statem.enc_write_state = ENC_WRITE_STATE_INVALID; |
28a31a0a MC |
170 | if (s->ext.use_etm) |
171 | s->s3->flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE; | |
172 | else | |
173 | s->s3->flags &= ~TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE; | |
174 | ||
0f113f3e MC |
175 | if (s->s3->tmp.new_cipher->algorithm2 & TLS1_STREAM_MAC) |
176 | s->mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM; | |
177 | else | |
178 | s->mac_flags &= ~SSL_MAC_FLAG_WRITE_MAC_STREAM; | |
f63a17d6 | 179 | if (s->enc_write_ctx != NULL && !SSL_IS_DTLS(s)) { |
0f113f3e | 180 | reuse_dd = 1; |
f63a17d6 MC |
181 | } else if ((s->enc_write_ctx = EVP_CIPHER_CTX_new()) == NULL) { |
182 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
183 | ERR_R_MALLOC_FAILURE); | |
0f113f3e | 184 | goto err; |
f63a17d6 | 185 | } |
0f113f3e MC |
186 | dd = s->enc_write_ctx; |
187 | if (SSL_IS_DTLS(s)) { | |
bfb0641f | 188 | mac_ctx = EVP_MD_CTX_new(); |
f63a17d6 MC |
189 | if (mac_ctx == NULL) { |
190 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
191 | SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
192 | ERR_R_MALLOC_FAILURE); | |
0f113f3e | 193 | goto err; |
f63a17d6 | 194 | } |
0f113f3e | 195 | s->write_hash = mac_ctx; |
5f3d93e4 | 196 | } else { |
0f113f3e | 197 | mac_ctx = ssl_replace_hash(&s->write_hash, NULL); |
f63a17d6 MC |
198 | if (mac_ctx == NULL) { |
199 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
200 | SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
201 | ERR_R_MALLOC_FAILURE); | |
5f3d93e4 | 202 | goto err; |
f63a17d6 | 203 | } |
5f3d93e4 | 204 | } |
09b6c2ef | 205 | #ifndef OPENSSL_NO_COMP |
efa7dd64 RS |
206 | COMP_CTX_free(s->compress); |
207 | s->compress = NULL; | |
0f113f3e MC |
208 | if (comp != NULL) { |
209 | s->compress = COMP_CTX_new(comp->method); | |
210 | if (s->compress == NULL) { | |
f63a17d6 MC |
211 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
212 | SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
213 | SSL_R_COMPRESSION_LIBRARY_ERROR); | |
214 | goto err; | |
0f113f3e MC |
215 | } |
216 | } | |
09b6c2ef | 217 | #endif |
0f113f3e | 218 | /* |
d5d0a1cb | 219 | * this is done by dtls1_reset_seq_numbers for DTLS |
0f113f3e | 220 | */ |
d5d0a1cb | 221 | if (!SSL_IS_DTLS(s)) |
de07f311 | 222 | RECORD_LAYER_reset_write_sequence(&s->rlayer); |
0f113f3e MC |
223 | mac_secret = &(s->s3->write_mac_secret[0]); |
224 | mac_secret_size = &(s->s3->write_mac_secret_size); | |
225 | } | |
226 | ||
227 | if (reuse_dd) | |
846ec07d | 228 | EVP_CIPHER_CTX_reset(dd); |
0f113f3e MC |
229 | |
230 | p = s->s3->tmp.key_block; | |
231 | i = *mac_secret_size = s->s3->tmp.new_mac_secret_size; | |
232 | ||
b43d1cbb | 233 | /* TODO(size_t): convert me */ |
0f113f3e | 234 | cl = EVP_CIPHER_key_length(c); |
361a1191 | 235 | j = cl; |
0f113f3e | 236 | /* Was j=(exp)?5:EVP_CIPHER_key_length(c); */ |
e75c5a79 | 237 | /* If GCM/CCM mode only part of IV comes from PRF */ |
0f113f3e MC |
238 | if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) |
239 | k = EVP_GCM_TLS_FIXED_IV_LEN; | |
e75c5a79 DSH |
240 | else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE) |
241 | k = EVP_CCM_TLS_FIXED_IV_LEN; | |
0f113f3e MC |
242 | else |
243 | k = EVP_CIPHER_iv_length(c); | |
244 | if ((which == SSL3_CHANGE_CIPHER_CLIENT_WRITE) || | |
245 | (which == SSL3_CHANGE_CIPHER_SERVER_READ)) { | |
246 | ms = &(p[0]); | |
247 | n = i + i; | |
248 | key = &(p[n]); | |
249 | n += j + j; | |
250 | iv = &(p[n]); | |
251 | n += k + k; | |
0f113f3e MC |
252 | } else { |
253 | n = i; | |
254 | ms = &(p[n]); | |
255 | n += i + j; | |
256 | key = &(p[n]); | |
257 | n += j + k; | |
258 | iv = &(p[n]); | |
259 | n += k; | |
0f113f3e MC |
260 | } |
261 | ||
262 | if (n > s->s3->tmp.key_block_length) { | |
f63a17d6 MC |
263 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE, |
264 | ERR_R_INTERNAL_ERROR); | |
265 | goto err; | |
0f113f3e MC |
266 | } |
267 | ||
268 | memcpy(mac_secret, ms, i); | |
269 | ||
270 | if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) { | |
348240c6 | 271 | /* TODO(size_t): Convert this function */ |
7b4d3ffa | 272 | mac_key = EVP_PKEY_new_mac_key(mac_type, NULL, mac_secret, |
f929439f | 273 | (int)*mac_secret_size); |
5f3d93e4 | 274 | if (mac_key == NULL |
a230b26e | 275 | || EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key) <= 0) { |
5f3d93e4 | 276 | EVP_PKEY_free(mac_key); |
f63a17d6 MC |
277 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE, |
278 | ERR_R_INTERNAL_ERROR); | |
279 | goto err; | |
5f3d93e4 | 280 | } |
0f113f3e MC |
281 | EVP_PKEY_free(mac_key); |
282 | } | |
d63a5e5e | 283 | #ifdef SSL_DEBUG |
0f113f3e MC |
284 | printf("which = %04X\nmac key=", which); |
285 | { | |
2b7363ec | 286 | size_t z; |
0f113f3e MC |
287 | for (z = 0; z < i; z++) |
288 | printf("%02X%c", ms[z], ((z + 1) % 16) ? ' ' : '\n'); | |
289 | } | |
58964a49 | 290 | #endif |
0f113f3e MC |
291 | |
292 | if (EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) { | |
eadf70d2 | 293 | if (!EVP_CipherInit_ex(dd, c, NULL, key, NULL, (which & SSL3_CC_WRITE)) |
348240c6 MC |
294 | || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GCM_SET_IV_FIXED, (int)k, |
295 | iv)) { | |
f63a17d6 MC |
296 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE, |
297 | ERR_R_INTERNAL_ERROR); | |
298 | goto err; | |
eadf70d2 | 299 | } |
e75c5a79 | 300 | } else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE) { |
3d3701ea | 301 | int taglen; |
a230b26e EK |
302 | if (s->s3->tmp. |
303 | new_cipher->algorithm_enc & (SSL_AES128CCM8 | SSL_AES256CCM8)) | |
ec07b1d8 | 304 | taglen = EVP_CCM8_TLS_TAG_LEN; |
3d3701ea | 305 | else |
ec07b1d8 | 306 | taglen = EVP_CCM_TLS_TAG_LEN; |
e75c5a79 DSH |
307 | if (!EVP_CipherInit_ex(dd, c, NULL, NULL, NULL, (which & SSL3_CC_WRITE)) |
308 | || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_IVLEN, 12, NULL) | |
309 | || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_TAG, taglen, NULL) | |
348240c6 | 310 | || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_CCM_SET_IV_FIXED, (int)k, iv) |
e75c5a79 | 311 | || !EVP_CipherInit_ex(dd, NULL, NULL, key, NULL, -1)) { |
f63a17d6 MC |
312 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE, |
313 | ERR_R_INTERNAL_ERROR); | |
314 | goto err; | |
e75c5a79 | 315 | } |
eadf70d2 MC |
316 | } else { |
317 | if (!EVP_CipherInit_ex(dd, c, NULL, key, iv, (which & SSL3_CC_WRITE))) { | |
f63a17d6 MC |
318 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE, |
319 | ERR_R_INTERNAL_ERROR); | |
320 | goto err; | |
eadf70d2 MC |
321 | } |
322 | } | |
0f113f3e | 323 | /* Needed for "composite" AEADs, such as RC4-HMAC-MD5 */ |
eadf70d2 MC |
324 | if ((EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER) && *mac_secret_size |
325 | && !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_MAC_KEY, | |
348240c6 | 326 | (int)*mac_secret_size, mac_secret)) { |
f63a17d6 MC |
327 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE, |
328 | ERR_R_INTERNAL_ERROR); | |
329 | goto err; | |
eadf70d2 | 330 | } |
50ec7505 BP |
331 | #ifndef OPENSSL_NO_KTLS |
332 | if (s->compress) | |
333 | goto skip_ktls; | |
334 | ||
335 | if ((which & SSL3_CC_READ) || | |
336 | ((which & SSL3_CC_WRITE) && (s->mode & SSL_MODE_NO_KTLS_TX))) | |
337 | goto skip_ktls; | |
338 | ||
339 | /* ktls supports only the maximum fragment size */ | |
340 | if (ssl_get_max_send_fragment(s) != SSL3_RT_MAX_PLAIN_LENGTH) | |
341 | goto skip_ktls; | |
342 | ||
343 | /* check that cipher is AES_GCM_128 */ | |
344 | if (EVP_CIPHER_nid(c) != NID_aes_128_gcm | |
345 | || EVP_CIPHER_mode(c) != EVP_CIPH_GCM_MODE | |
346 | || EVP_CIPHER_key_length(c) != TLS_CIPHER_AES_GCM_128_KEY_SIZE) | |
347 | goto skip_ktls; | |
348 | ||
349 | /* check version is 1.2 */ | |
350 | if (s->version != TLS1_2_VERSION) | |
351 | goto skip_ktls; | |
352 | ||
353 | wbio = s->wbio; | |
354 | if (!ossl_assert(wbio != NULL)) { | |
355 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
356 | ERR_R_INTERNAL_ERROR); | |
357 | goto err; | |
358 | } | |
359 | ||
360 | /* All future data will get encrypted by ktls. Flush the BIO or skip ktls */ | |
361 | if (BIO_flush(wbio) <= 0) | |
362 | goto skip_ktls; | |
363 | ||
364 | /* ktls doesn't support renegotiation */ | |
365 | if (BIO_get_ktls_send(s->wbio)) { | |
366 | SSLfatal(s, SSL_AD_NO_RENEGOTIATION, SSL_F_TLS1_CHANGE_CIPHER_STATE, | |
367 | ERR_R_INTERNAL_ERROR); | |
368 | goto err; | |
369 | } | |
370 | ||
371 | memset(&crypto_info, 0, sizeof(crypto_info)); | |
372 | crypto_info.info.cipher_type = TLS_CIPHER_AES_GCM_128; | |
373 | crypto_info.info.version = s->version; | |
374 | ||
375 | EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GET_IV, | |
376 | EVP_GCM_TLS_FIXED_IV_LEN + EVP_GCM_TLS_EXPLICIT_IV_LEN, | |
377 | geniv); | |
378 | memcpy(crypto_info.iv, geniv + EVP_GCM_TLS_FIXED_IV_LEN, | |
379 | TLS_CIPHER_AES_GCM_128_IV_SIZE); | |
380 | memcpy(crypto_info.salt, geniv, TLS_CIPHER_AES_GCM_128_SALT_SIZE); | |
381 | memcpy(crypto_info.key, key, EVP_CIPHER_key_length(c)); | |
382 | memcpy(crypto_info.rec_seq, &s->rlayer.write_sequence, | |
383 | TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE); | |
384 | ||
385 | /* ktls works with user provided buffers directly */ | |
386 | if (BIO_set_ktls(wbio, &crypto_info, which & SSL3_CC_WRITE)) { | |
387 | ssl3_release_write_buffer(s); | |
388 | SSL_set_options(s, SSL_OP_NO_RENEGOTIATION); | |
389 | } | |
390 | ||
391 | skip_ktls: | |
392 | #endif /* OPENSSL_NO_KTLS */ | |
7426cd34 | 393 | s->statem.enc_write_state = ENC_WRITE_STATE_VALID; |
1cf218bc | 394 | |
d63a5e5e | 395 | #ifdef SSL_DEBUG |
0f113f3e MC |
396 | printf("which = %04X\nkey=", which); |
397 | { | |
398 | int z; | |
399 | for (z = 0; z < EVP_CIPHER_key_length(c); z++) | |
400 | printf("%02X%c", key[z], ((z + 1) % 16) ? ' ' : '\n'); | |
401 | } | |
402 | printf("\niv="); | |
403 | { | |
2b7363ec | 404 | size_t z; |
0f113f3e MC |
405 | for (z = 0; z < k; z++) |
406 | printf("%02X%c", iv[z], ((z + 1) % 16) ? ' ' : '\n'); | |
407 | } | |
408 | printf("\n"); | |
58964a49 RE |
409 | #endif |
410 | ||
0f113f3e MC |
411 | OPENSSL_cleanse(tmp1, sizeof(tmp1)); |
412 | OPENSSL_cleanse(tmp2, sizeof(tmp1)); | |
413 | OPENSSL_cleanse(iv1, sizeof(iv1)); | |
414 | OPENSSL_cleanse(iv2, sizeof(iv2)); | |
208fb891 | 415 | return 1; |
0f113f3e | 416 | err: |
e0f9bf1d RS |
417 | OPENSSL_cleanse(tmp1, sizeof(tmp1)); |
418 | OPENSSL_cleanse(tmp2, sizeof(tmp1)); | |
419 | OPENSSL_cleanse(iv1, sizeof(iv1)); | |
420 | OPENSSL_cleanse(iv2, sizeof(iv2)); | |
26a7d938 | 421 | return 0; |
0f113f3e | 422 | } |
58964a49 | 423 | |
6b691a5c | 424 | int tls1_setup_key_block(SSL *s) |
0f113f3e | 425 | { |
b7d60e76 | 426 | unsigned char *p; |
0f113f3e MC |
427 | const EVP_CIPHER *c; |
428 | const EVP_MD *hash; | |
0f113f3e | 429 | SSL_COMP *comp; |
8c1a5343 MC |
430 | int mac_type = NID_undef; |
431 | size_t num, mac_secret_size = 0; | |
0f113f3e | 432 | int ret = 0; |
58964a49 | 433 | |
0f113f3e | 434 | if (s->s3->tmp.key_block_length != 0) |
208fb891 | 435 | return 1; |
0f113f3e | 436 | |
28a31a0a MC |
437 | if (!ssl_cipher_get_evp(s->session, &c, &hash, &mac_type, &mac_secret_size, |
438 | &comp, s->ext.use_etm)) { | |
f63a17d6 MC |
439 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_SETUP_KEY_BLOCK, |
440 | SSL_R_CIPHER_OR_HASH_UNAVAILABLE); | |
26a7d938 | 441 | return 0; |
0f113f3e MC |
442 | } |
443 | ||
444 | s->s3->tmp.new_sym_enc = c; | |
445 | s->s3->tmp.new_hash = hash; | |
446 | s->s3->tmp.new_mac_pkey_type = mac_type; | |
447 | s->s3->tmp.new_mac_secret_size = mac_secret_size; | |
a230b26e | 448 | num = EVP_CIPHER_key_length(c) + mac_secret_size + EVP_CIPHER_iv_length(c); |
0f113f3e MC |
449 | num *= 2; |
450 | ||
451 | ssl3_cleanup_key_block(s); | |
452 | ||
b7d60e76 | 453 | if ((p = OPENSSL_malloc(num)) == NULL) { |
f63a17d6 MC |
454 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_SETUP_KEY_BLOCK, |
455 | ERR_R_MALLOC_FAILURE); | |
0f113f3e MC |
456 | goto err; |
457 | } | |
458 | ||
459 | s->s3->tmp.key_block_length = num; | |
b7d60e76 | 460 | s->s3->tmp.key_block = p; |
0f113f3e | 461 | |
d63a5e5e | 462 | #ifdef SSL_DEBUG |
0f113f3e MC |
463 | printf("client random\n"); |
464 | { | |
465 | int z; | |
466 | for (z = 0; z < SSL3_RANDOM_SIZE; z++) | |
467 | printf("%02X%c", s->s3->client_random[z], | |
468 | ((z + 1) % 16) ? ' ' : '\n'); | |
469 | } | |
470 | printf("server random\n"); | |
471 | { | |
472 | int z; | |
473 | for (z = 0; z < SSL3_RANDOM_SIZE; z++) | |
474 | printf("%02X%c", s->s3->server_random[z], | |
475 | ((z + 1) % 16) ? ' ' : '\n'); | |
476 | } | |
477 | printf("master key\n"); | |
478 | { | |
8c1a5343 | 479 | size_t z; |
0f113f3e MC |
480 | for (z = 0; z < s->session->master_key_length; z++) |
481 | printf("%02X%c", s->session->master_key[z], | |
482 | ((z + 1) % 16) ? ' ' : '\n'); | |
483 | } | |
58964a49 | 484 | #endif |
d4d2f3a4 MC |
485 | if (!tls1_generate_key_block(s, p, num)) { |
486 | /* SSLfatal() already called */ | |
0f113f3e | 487 | goto err; |
d4d2f3a4 | 488 | } |
d63a5e5e | 489 | #ifdef SSL_DEBUG |
0f113f3e MC |
490 | printf("\nkey block\n"); |
491 | { | |
8c1a5343 | 492 | size_t z; |
0f113f3e | 493 | for (z = 0; z < num; z++) |
d1776fde | 494 | printf("%02X%c", p[z], ((z + 1) % 16) ? ' ' : '\n'); |
0f113f3e | 495 | } |
58964a49 RE |
496 | #endif |
497 | ||
0f113f3e MC |
498 | if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS) |
499 | && s->method->version <= TLS1_VERSION) { | |
500 | /* | |
501 | * enable vulnerability countermeasure for CBC ciphers with known-IV | |
502 | * problem (http://www.openssl.org/~bodo/tls-cbc.txt) | |
503 | */ | |
504 | s->s3->need_empty_fragments = 1; | |
505 | ||
506 | if (s->session->cipher != NULL) { | |
507 | if (s->session->cipher->algorithm_enc == SSL_eNULL) | |
508 | s->s3->need_empty_fragments = 0; | |
509 | ||
d1d0be3c | 510 | #ifndef OPENSSL_NO_RC4 |
0f113f3e MC |
511 | if (s->session->cipher->algorithm_enc == SSL_RC4) |
512 | s->s3->need_empty_fragments = 0; | |
82b0bf0b | 513 | #endif |
0f113f3e MC |
514 | } |
515 | } | |
516 | ||
517 | ret = 1; | |
518 | err: | |
26a7d938 | 519 | return ret; |
0f113f3e | 520 | } |
58964a49 | 521 | |
6db6bc5a MC |
522 | size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen, |
523 | unsigned char *out) | |
0f113f3e | 524 | { |
8c1a5343 | 525 | size_t hashlen; |
28ba2541 | 526 | unsigned char hash[EVP_MAX_MD_SIZE]; |
0f113f3e | 527 | |
d4d2f3a4 MC |
528 | if (!ssl3_digest_cached_records(s, 0)) { |
529 | /* SSLfatal() already called */ | |
124037fd | 530 | return 0; |
d4d2f3a4 | 531 | } |
0f113f3e | 532 | |
d4d2f3a4 MC |
533 | if (!ssl_handshake_hash(s, hash, sizeof(hash), &hashlen)) { |
534 | /* SSLfatal() already called */ | |
48fbcbac | 535 | return 0; |
d4d2f3a4 | 536 | } |
0f113f3e | 537 | |
b7d60e76 | 538 | if (!tls1_PRF(s, str, slen, hash, hashlen, NULL, 0, NULL, 0, NULL, 0, |
0f113f3e | 539 | s->session->master_key, s->session->master_key_length, |
d4d2f3a4 MC |
540 | out, TLS1_FINISH_MAC_LENGTH, 1)) { |
541 | /* SSLfatal() already called */ | |
0f113f3e | 542 | return 0; |
d4d2f3a4 | 543 | } |
c9dd49a7 | 544 | OPENSSL_cleanse(hash, hashlen); |
b7d60e76 | 545 | return TLS1_FINISH_MAC_LENGTH; |
0f113f3e | 546 | } |
58964a49 | 547 | |
6b691a5c | 548 | int tls1_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p, |
8c1a5343 | 549 | size_t len, size_t *secret_size) |
0f113f3e | 550 | { |
329114f9 | 551 | if (s->session->flags & SSL_SESS_FLAG_EXTMS) { |
0cfb0e75 | 552 | unsigned char hash[EVP_MAX_MD_SIZE * 2]; |
8c1a5343 | 553 | size_t hashlen; |
a230b26e EK |
554 | /* |
555 | * Digest cached records keeping record buffer (if present): this wont | |
556 | * affect client auth because we're freezing the buffer at the same | |
557 | * point (after client key exchange and before certificate verify) | |
124037fd | 558 | */ |
f63a17d6 MC |
559 | if (!ssl3_digest_cached_records(s, 1) |
560 | || !ssl_handshake_hash(s, hash, sizeof(hash), &hashlen)) { | |
561 | /* SSLfatal() already called */ | |
8c1a5343 | 562 | return 0; |
f63a17d6 | 563 | } |
0cfb0e75 DSH |
564 | #ifdef SSL_DEBUG |
565 | fprintf(stderr, "Handshake hashes:\n"); | |
566 | BIO_dump_fp(stderr, (char *)hash, hashlen); | |
567 | #endif | |
d4d2f3a4 MC |
568 | if (!tls1_PRF(s, |
569 | TLS_MD_EXTENDED_MASTER_SECRET_CONST, | |
570 | TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE, | |
571 | hash, hashlen, | |
572 | NULL, 0, | |
573 | NULL, 0, | |
574 | NULL, 0, p, len, out, | |
575 | SSL3_MASTER_SECRET_SIZE, 1)) { | |
576 | /* SSLfatal() already called */ | |
577 | return 0; | |
578 | } | |
0cfb0e75 DSH |
579 | OPENSSL_cleanse(hash, hashlen); |
580 | } else { | |
d4d2f3a4 MC |
581 | if (!tls1_PRF(s, |
582 | TLS_MD_MASTER_SECRET_CONST, | |
583 | TLS_MD_MASTER_SECRET_CONST_SIZE, | |
584 | s->s3->client_random, SSL3_RANDOM_SIZE, | |
585 | NULL, 0, | |
586 | s->s3->server_random, SSL3_RANDOM_SIZE, | |
587 | NULL, 0, p, len, out, | |
588 | SSL3_MASTER_SECRET_SIZE, 1)) { | |
589 | /* SSLfatal() already called */ | |
590 | return 0; | |
591 | } | |
0cfb0e75 | 592 | } |
a2f9200f | 593 | #ifdef SSL_DEBUG |
0f113f3e MC |
594 | fprintf(stderr, "Premaster Secret:\n"); |
595 | BIO_dump_fp(stderr, (char *)p, len); | |
596 | fprintf(stderr, "Client Random:\n"); | |
597 | BIO_dump_fp(stderr, (char *)s->s3->client_random, SSL3_RANDOM_SIZE); | |
598 | fprintf(stderr, "Server Random:\n"); | |
599 | BIO_dump_fp(stderr, (char *)s->s3->server_random, SSL3_RANDOM_SIZE); | |
600 | fprintf(stderr, "Master Secret:\n"); | |
601 | BIO_dump_fp(stderr, (char *)s->session->master_key, | |
602 | SSL3_MASTER_SECRET_SIZE); | |
a2f9200f | 603 | #endif |
761772d7 | 604 | |
8c1a5343 MC |
605 | *secret_size = SSL3_MASTER_SECRET_SIZE; |
606 | return 1; | |
0f113f3e | 607 | } |
58964a49 | 608 | |
74b4b494 | 609 | int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, |
0f113f3e MC |
610 | const char *label, size_t llen, |
611 | const unsigned char *context, | |
612 | size_t contextlen, int use_context) | |
613 | { | |
0f113f3e | 614 | unsigned char *val = NULL; |
1c8a527c | 615 | size_t vallen = 0, currentvalpos; |
0f113f3e | 616 | int rv; |
e0af0405 | 617 | |
0f113f3e MC |
618 | /* |
619 | * construct PRF arguments we construct the PRF argument ourself rather | |
620 | * than passing separate values into the TLS PRF to ensure that the | |
621 | * concatenation of values does not create a prohibited label. | |
622 | */ | |
623 | vallen = llen + SSL3_RANDOM_SIZE * 2; | |
624 | if (use_context) { | |
625 | vallen += 2 + contextlen; | |
626 | } | |
627 | ||
628 | val = OPENSSL_malloc(vallen); | |
629 | if (val == NULL) | |
630 | goto err2; | |
631 | currentvalpos = 0; | |
632 | memcpy(val + currentvalpos, (unsigned char *)label, llen); | |
633 | currentvalpos += llen; | |
634 | memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE); | |
635 | currentvalpos += SSL3_RANDOM_SIZE; | |
636 | memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE); | |
637 | currentvalpos += SSL3_RANDOM_SIZE; | |
638 | ||
639 | if (use_context) { | |
640 | val[currentvalpos] = (contextlen >> 8) & 0xff; | |
641 | currentvalpos++; | |
642 | val[currentvalpos] = contextlen & 0xff; | |
643 | currentvalpos++; | |
644 | if ((contextlen > 0) || (context != NULL)) { | |
645 | memcpy(val + currentvalpos, context, contextlen); | |
646 | } | |
647 | } | |
648 | ||
649 | /* | |
650 | * disallow prohibited labels note that SSL3_RANDOM_SIZE > max(prohibited | |
651 | * label len) = 15, so size of val > max(prohibited label len) = 15 and | |
652 | * the comparisons won't have buffer overflow | |
653 | */ | |
654 | if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST, | |
655 | TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0) | |
656 | goto err1; | |
657 | if (memcmp(val, TLS_MD_SERVER_FINISH_CONST, | |
658 | TLS_MD_SERVER_FINISH_CONST_SIZE) == 0) | |
659 | goto err1; | |
660 | if (memcmp(val, TLS_MD_MASTER_SECRET_CONST, | |
661 | TLS_MD_MASTER_SECRET_CONST_SIZE) == 0) | |
662 | goto err1; | |
0cfb0e75 DSH |
663 | if (memcmp(val, TLS_MD_EXTENDED_MASTER_SECRET_CONST, |
664 | TLS_MD_EXTENDED_MASTER_SECRET_CONST_SIZE) == 0) | |
665 | goto err1; | |
0f113f3e MC |
666 | if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST, |
667 | TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0) | |
668 | goto err1; | |
669 | ||
28ba2541 | 670 | rv = tls1_PRF(s, |
0f113f3e MC |
671 | val, vallen, |
672 | NULL, 0, | |
673 | NULL, 0, | |
674 | NULL, 0, | |
675 | NULL, 0, | |
676 | s->session->master_key, s->session->master_key_length, | |
d4d2f3a4 | 677 | out, olen, 0); |
e0af0405 | 678 | |
0f113f3e MC |
679 | goto ret; |
680 | err1: | |
a230b26e | 681 | SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, SSL_R_TLS_ILLEGAL_EXPORTER_LABEL); |
0f113f3e MC |
682 | rv = 0; |
683 | goto ret; | |
684 | err2: | |
685 | SSLerr(SSL_F_TLS1_EXPORT_KEYING_MATERIAL, ERR_R_MALLOC_FAILURE); | |
686 | rv = 0; | |
687 | ret: | |
05c7b163 | 688 | OPENSSL_clear_free(val, vallen); |
26a7d938 | 689 | return rv; |
0f113f3e | 690 | } |
e0af0405 | 691 | |
6b691a5c | 692 | int tls1_alert_code(int code) |
0f113f3e MC |
693 | { |
694 | switch (code) { | |
695 | case SSL_AD_CLOSE_NOTIFY: | |
26a7d938 | 696 | return SSL3_AD_CLOSE_NOTIFY; |
0f113f3e | 697 | case SSL_AD_UNEXPECTED_MESSAGE: |
26a7d938 | 698 | return SSL3_AD_UNEXPECTED_MESSAGE; |
0f113f3e | 699 | case SSL_AD_BAD_RECORD_MAC: |
26a7d938 | 700 | return SSL3_AD_BAD_RECORD_MAC; |
0f113f3e | 701 | case SSL_AD_DECRYPTION_FAILED: |
26a7d938 | 702 | return TLS1_AD_DECRYPTION_FAILED; |
0f113f3e | 703 | case SSL_AD_RECORD_OVERFLOW: |
26a7d938 | 704 | return TLS1_AD_RECORD_OVERFLOW; |
0f113f3e | 705 | case SSL_AD_DECOMPRESSION_FAILURE: |
26a7d938 | 706 | return SSL3_AD_DECOMPRESSION_FAILURE; |
0f113f3e | 707 | case SSL_AD_HANDSHAKE_FAILURE: |
26a7d938 | 708 | return SSL3_AD_HANDSHAKE_FAILURE; |
0f113f3e | 709 | case SSL_AD_NO_CERTIFICATE: |
26a7d938 | 710 | return -1; |
0f113f3e | 711 | case SSL_AD_BAD_CERTIFICATE: |
26a7d938 | 712 | return SSL3_AD_BAD_CERTIFICATE; |
0f113f3e | 713 | case SSL_AD_UNSUPPORTED_CERTIFICATE: |
26a7d938 | 714 | return SSL3_AD_UNSUPPORTED_CERTIFICATE; |
0f113f3e | 715 | case SSL_AD_CERTIFICATE_REVOKED: |
26a7d938 | 716 | return SSL3_AD_CERTIFICATE_REVOKED; |
0f113f3e | 717 | case SSL_AD_CERTIFICATE_EXPIRED: |
26a7d938 | 718 | return SSL3_AD_CERTIFICATE_EXPIRED; |
0f113f3e | 719 | case SSL_AD_CERTIFICATE_UNKNOWN: |
26a7d938 | 720 | return SSL3_AD_CERTIFICATE_UNKNOWN; |
0f113f3e | 721 | case SSL_AD_ILLEGAL_PARAMETER: |
26a7d938 | 722 | return SSL3_AD_ILLEGAL_PARAMETER; |
0f113f3e | 723 | case SSL_AD_UNKNOWN_CA: |
26a7d938 | 724 | return TLS1_AD_UNKNOWN_CA; |
0f113f3e | 725 | case SSL_AD_ACCESS_DENIED: |
26a7d938 | 726 | return TLS1_AD_ACCESS_DENIED; |
0f113f3e | 727 | case SSL_AD_DECODE_ERROR: |
26a7d938 | 728 | return TLS1_AD_DECODE_ERROR; |
0f113f3e | 729 | case SSL_AD_DECRYPT_ERROR: |
26a7d938 | 730 | return TLS1_AD_DECRYPT_ERROR; |
0f113f3e | 731 | case SSL_AD_EXPORT_RESTRICTION: |
26a7d938 | 732 | return TLS1_AD_EXPORT_RESTRICTION; |
0f113f3e | 733 | case SSL_AD_PROTOCOL_VERSION: |
26a7d938 | 734 | return TLS1_AD_PROTOCOL_VERSION; |
0f113f3e | 735 | case SSL_AD_INSUFFICIENT_SECURITY: |
26a7d938 | 736 | return TLS1_AD_INSUFFICIENT_SECURITY; |
0f113f3e | 737 | case SSL_AD_INTERNAL_ERROR: |
26a7d938 | 738 | return TLS1_AD_INTERNAL_ERROR; |
0f113f3e | 739 | case SSL_AD_USER_CANCELLED: |
26a7d938 | 740 | return TLS1_AD_USER_CANCELLED; |
0f113f3e | 741 | case SSL_AD_NO_RENEGOTIATION: |
26a7d938 | 742 | return TLS1_AD_NO_RENEGOTIATION; |
0f113f3e | 743 | case SSL_AD_UNSUPPORTED_EXTENSION: |
26a7d938 | 744 | return TLS1_AD_UNSUPPORTED_EXTENSION; |
0f113f3e | 745 | case SSL_AD_CERTIFICATE_UNOBTAINABLE: |
26a7d938 | 746 | return TLS1_AD_CERTIFICATE_UNOBTAINABLE; |
0f113f3e | 747 | case SSL_AD_UNRECOGNIZED_NAME: |
26a7d938 | 748 | return TLS1_AD_UNRECOGNIZED_NAME; |
0f113f3e | 749 | case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: |
26a7d938 | 750 | return TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE; |
0f113f3e | 751 | case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: |
26a7d938 | 752 | return TLS1_AD_BAD_CERTIFICATE_HASH_VALUE; |
0f113f3e | 753 | case SSL_AD_UNKNOWN_PSK_IDENTITY: |
26a7d938 | 754 | return TLS1_AD_UNKNOWN_PSK_IDENTITY; |
0f113f3e | 755 | case SSL_AD_INAPPROPRIATE_FALLBACK: |
26a7d938 | 756 | return TLS1_AD_INAPPROPRIATE_FALLBACK; |
06217867 | 757 | case SSL_AD_NO_APPLICATION_PROTOCOL: |
26a7d938 | 758 | return TLS1_AD_NO_APPLICATION_PROTOCOL; |
42c28b63 MC |
759 | case SSL_AD_CERTIFICATE_REQUIRED: |
760 | return SSL_AD_HANDSHAKE_FAILURE; | |
0f113f3e | 761 | default: |
26a7d938 | 762 | return -1; |
0f113f3e MC |
763 | } |
764 | } |