summaryrefslogtreecommitdiff
path: root/src/lib/libssl/t1_enc.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/libssl/t1_enc.c')
-rw-r--r--src/lib/libssl/t1_enc.c496
1 files changed, 0 insertions, 496 deletions
diff --git a/src/lib/libssl/t1_enc.c b/src/lib/libssl/t1_enc.c
deleted file mode 100644
index 65e2063398..0000000000
--- a/src/lib/libssl/t1_enc.c
+++ /dev/null
@@ -1,496 +0,0 @@
1/* $OpenBSD: t1_enc.c,v 1.151 2021/07/01 17:53:39 jsing Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58/* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111/* ====================================================================
112 * Copyright 2005 Nokia. All rights reserved.
113 *
114 * The portions of the attached software ("Contribution") is developed by
115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
116 * license.
117 *
118 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
119 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
120 * support (see RFC 4279) to OpenSSL.
121 *
122 * No patent licenses or other rights except those expressly stated in
123 * the OpenSSL open source license shall be deemed granted or received
124 * expressly, by implication, estoppel, or otherwise.
125 *
126 * No assurances are provided by Nokia that the Contribution does not
127 * infringe the patent or other intellectual property rights of any third
128 * party or that the license provides you with all the necessary rights
129 * to make use of the Contribution.
130 *
131 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
132 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
133 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
134 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
135 * OTHERWISE.
136 */
137
138#include <limits.h>
139#include <stdio.h>
140
141#include <openssl/evp.h>
142#include <openssl/hmac.h>
143#include <openssl/md5.h>
144#include <openssl/opensslconf.h>
145
146#include "dtls_locl.h"
147#include "ssl_locl.h"
148
149void
150tls1_cleanup_key_block(SSL *s)
151{
152 tls12_key_block_free(S3I(s)->hs.tls12.key_block);
153 S3I(s)->hs.tls12.key_block = NULL;
154}
155
156/*
157 * TLS P_hash() data expansion function - see RFC 5246, section 5.
158 */
159static int
160tls1_P_hash(const EVP_MD *md, const unsigned char *secret, size_t secret_len,
161 const void *seed1, size_t seed1_len, const void *seed2, size_t seed2_len,
162 const void *seed3, size_t seed3_len, const void *seed4, size_t seed4_len,
163 const void *seed5, size_t seed5_len, unsigned char *out, size_t out_len)
164{
165 unsigned char A1[EVP_MAX_MD_SIZE], hmac[EVP_MAX_MD_SIZE];
166 size_t A1_len, hmac_len;
167 EVP_MD_CTX ctx;
168 EVP_PKEY *mac_key;
169 int ret = 0;
170 int chunk;
171 size_t i;
172
173 chunk = EVP_MD_size(md);
174 OPENSSL_assert(chunk >= 0);
175
176 EVP_MD_CTX_init(&ctx);
177
178 mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, secret, secret_len);
179 if (!mac_key)
180 goto err;
181 if (!EVP_DigestSignInit(&ctx, NULL, md, NULL, mac_key))
182 goto err;
183 if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len))
184 goto err;
185 if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len))
186 goto err;
187 if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len))
188 goto err;
189 if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len))
190 goto err;
191 if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len))
192 goto err;
193 if (!EVP_DigestSignFinal(&ctx, A1, &A1_len))
194 goto err;
195
196 for (;;) {
197 if (!EVP_DigestSignInit(&ctx, NULL, md, NULL, mac_key))
198 goto err;
199 if (!EVP_DigestSignUpdate(&ctx, A1, A1_len))
200 goto err;
201 if (seed1 && !EVP_DigestSignUpdate(&ctx, seed1, seed1_len))
202 goto err;
203 if (seed2 && !EVP_DigestSignUpdate(&ctx, seed2, seed2_len))
204 goto err;
205 if (seed3 && !EVP_DigestSignUpdate(&ctx, seed3, seed3_len))
206 goto err;
207 if (seed4 && !EVP_DigestSignUpdate(&ctx, seed4, seed4_len))
208 goto err;
209 if (seed5 && !EVP_DigestSignUpdate(&ctx, seed5, seed5_len))
210 goto err;
211 if (!EVP_DigestSignFinal(&ctx, hmac, &hmac_len))
212 goto err;
213
214 if (hmac_len > out_len)
215 hmac_len = out_len;
216
217 for (i = 0; i < hmac_len; i++)
218 out[i] ^= hmac[i];
219
220 out += hmac_len;
221 out_len -= hmac_len;
222
223 if (out_len == 0)
224 break;
225
226 if (!EVP_DigestSignInit(&ctx, NULL, md, NULL, mac_key))
227 goto err;
228 if (!EVP_DigestSignUpdate(&ctx, A1, A1_len))
229 goto err;
230 if (!EVP_DigestSignFinal(&ctx, A1, &A1_len))
231 goto err;
232 }
233 ret = 1;
234
235 err:
236 EVP_PKEY_free(mac_key);
237 EVP_MD_CTX_cleanup(&ctx);
238
239 explicit_bzero(A1, sizeof(A1));
240 explicit_bzero(hmac, sizeof(hmac));
241
242 return ret;
243}
244
245int
246tls1_PRF(SSL *s, const unsigned char *secret, size_t secret_len,
247 const void *seed1, size_t seed1_len, const void *seed2, size_t seed2_len,
248 const void *seed3, size_t seed3_len, const void *seed4, size_t seed4_len,
249 const void *seed5, size_t seed5_len, unsigned char *out, size_t out_len)
250{
251 const EVP_MD *md;
252 size_t half_len;
253
254 memset(out, 0, out_len);
255
256 if (!ssl_get_handshake_evp_md(s, &md))
257 return (0);
258
259 if (md->type == NID_md5_sha1) {
260 /*
261 * Partition secret between MD5 and SHA1, then XOR result.
262 * If the secret length is odd, a one byte overlap is used.
263 */
264 half_len = secret_len - (secret_len / 2);
265 if (!tls1_P_hash(EVP_md5(), secret, half_len, seed1, seed1_len,
266 seed2, seed2_len, seed3, seed3_len, seed4, seed4_len,
267 seed5, seed5_len, out, out_len))
268 return (0);
269
270 secret += secret_len - half_len;
271 if (!tls1_P_hash(EVP_sha1(), secret, half_len, seed1, seed1_len,
272 seed2, seed2_len, seed3, seed3_len, seed4, seed4_len,
273 seed5, seed5_len, out, out_len))
274 return (0);
275
276 return (1);
277 }
278
279 if (!tls1_P_hash(md, secret, secret_len, seed1, seed1_len,
280 seed2, seed2_len, seed3, seed3_len, seed4, seed4_len,
281 seed5, seed5_len, out, out_len))
282 return (0);
283
284 return (1);
285}
286
287int
288tls1_generate_key_block(SSL *s, uint8_t *key_block, size_t key_block_len)
289{
290 return tls1_PRF(s,
291 s->session->master_key, s->session->master_key_length,
292 TLS_MD_KEY_EXPANSION_CONST, TLS_MD_KEY_EXPANSION_CONST_SIZE,
293 s->s3->server_random, SSL3_RANDOM_SIZE,
294 s->s3->client_random, SSL3_RANDOM_SIZE,
295 NULL, 0, NULL, 0, key_block, key_block_len);
296}
297
298static int
299tls1_change_cipher_state(SSL *s, int is_write)
300{
301 CBS mac_key, key, iv;
302
303 /* Use client write keys on client write and server read. */
304 if ((!s->server && is_write) || (s->server && !is_write)) {
305 tls12_key_block_client_write(S3I(s)->hs.tls12.key_block,
306 &mac_key, &key, &iv);
307 } else {
308 tls12_key_block_server_write(S3I(s)->hs.tls12.key_block,
309 &mac_key, &key, &iv);
310 }
311
312 if (!is_write) {
313 if (!tls12_record_layer_change_read_cipher_state(s->internal->rl,
314 &mac_key, &key, &iv))
315 goto err;
316 if (SSL_is_dtls(s))
317 dtls1_reset_read_seq_numbers(s);
318 tls12_record_layer_read_cipher_hash(s->internal->rl,
319 &s->enc_read_ctx, &s->read_hash);
320 } else {
321 if (!tls12_record_layer_change_write_cipher_state(s->internal->rl,
322 &mac_key, &key, &iv))
323 goto err;
324 }
325 return (1);
326
327 err:
328 return (0);
329}
330
331int
332tls1_change_read_cipher_state(SSL *s)
333{
334 return tls1_change_cipher_state(s, 0);
335}
336
337int
338tls1_change_write_cipher_state(SSL *s)
339{
340 return tls1_change_cipher_state(s, 1);
341}
342
343int
344tls1_setup_key_block(SSL *s)
345{
346 struct tls12_key_block *key_block;
347 int mac_type = NID_undef, mac_secret_size = 0;
348 const EVP_CIPHER *cipher = NULL;
349 const EVP_AEAD *aead = NULL;
350 const EVP_MD *handshake_hash = NULL;
351 const EVP_MD *mac_hash = NULL;
352 int ret = 0;
353
354 /*
355 * XXX - callers should be changed so that they only call this
356 * function once.
357 */
358 if (S3I(s)->hs.tls12.key_block != NULL)
359 return (1);
360
361 if (s->session->cipher &&
362 (s->session->cipher->algorithm_mac & SSL_AEAD)) {
363 if (!ssl_cipher_get_evp_aead(s->session, &aead)) {
364 SSLerror(s, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
365 return (0);
366 }
367 } else {
368 /* XXX - mac_type and mac_secret_size are now unused. */
369 if (!ssl_cipher_get_evp(s->session, &cipher, &mac_hash,
370 &mac_type, &mac_secret_size)) {
371 SSLerror(s, SSL_R_CIPHER_OR_HASH_UNAVAILABLE);
372 return (0);
373 }
374 }
375
376 if (!ssl_get_handshake_evp_md(s, &handshake_hash))
377 return (0);
378
379 tls12_record_layer_set_aead(s->internal->rl, aead);
380 tls12_record_layer_set_cipher_hash(s->internal->rl, cipher,
381 handshake_hash, mac_hash);
382
383 if ((key_block = tls12_key_block_new()) == NULL)
384 goto err;
385 if (!tls12_key_block_generate(key_block, s, aead, cipher, mac_hash))
386 goto err;
387
388 S3I(s)->hs.tls12.key_block = key_block;
389 key_block = NULL;
390
391 if (!(s->internal->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS) &&
392 s->method->version <= TLS1_VERSION) {
393 /*
394 * Enable vulnerability countermeasure for CBC ciphers with
395 * known-IV problem (http://www.openssl.org/~bodo/tls-cbc.txt)
396 */
397 S3I(s)->need_empty_fragments = 1;
398
399 if (s->session->cipher != NULL) {
400 if (s->session->cipher->algorithm_enc == SSL_eNULL)
401 S3I(s)->need_empty_fragments = 0;
402
403#ifndef OPENSSL_NO_RC4
404 if (s->session->cipher->algorithm_enc == SSL_RC4)
405 S3I(s)->need_empty_fragments = 0;
406#endif
407 }
408 }
409
410 ret = 1;
411
412 err:
413 tls12_key_block_free(key_block);
414
415 return (ret);
416}
417
418int
419tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
420 const char *label, size_t llen, const unsigned char *context,
421 size_t contextlen, int use_context)
422{
423 unsigned char *val = NULL;
424 size_t vallen, currentvalpos;
425 int rv;
426
427 if (!SSL_is_init_finished(s)) {
428 SSLerror(s, SSL_R_BAD_STATE);
429 return 0;
430 }
431
432 /* construct PRF arguments
433 * we construct the PRF argument ourself rather than passing separate
434 * values into the TLS PRF to ensure that the concatenation of values
435 * does not create a prohibited label.
436 */
437 vallen = llen + SSL3_RANDOM_SIZE * 2;
438 if (use_context) {
439 vallen += 2 + contextlen;
440 }
441
442 val = malloc(vallen);
443 if (val == NULL)
444 goto err2;
445 currentvalpos = 0;
446 memcpy(val + currentvalpos, (unsigned char *) label, llen);
447 currentvalpos += llen;
448 memcpy(val + currentvalpos, s->s3->client_random, SSL3_RANDOM_SIZE);
449 currentvalpos += SSL3_RANDOM_SIZE;
450 memcpy(val + currentvalpos, s->s3->server_random, SSL3_RANDOM_SIZE);
451 currentvalpos += SSL3_RANDOM_SIZE;
452
453 if (use_context) {
454 val[currentvalpos] = (contextlen >> 8) & 0xff;
455 currentvalpos++;
456 val[currentvalpos] = contextlen & 0xff;
457 currentvalpos++;
458 if ((contextlen > 0) || (context != NULL)) {
459 memcpy(val + currentvalpos, context, contextlen);
460 }
461 }
462
463 /* disallow prohibited labels
464 * note that SSL3_RANDOM_SIZE > max(prohibited label len) =
465 * 15, so size of val > max(prohibited label len) = 15 and the
466 * comparisons won't have buffer overflow
467 */
468 if (memcmp(val, TLS_MD_CLIENT_FINISH_CONST,
469 TLS_MD_CLIENT_FINISH_CONST_SIZE) == 0)
470 goto err1;
471 if (memcmp(val, TLS_MD_SERVER_FINISH_CONST,
472 TLS_MD_SERVER_FINISH_CONST_SIZE) == 0)
473 goto err1;
474 if (memcmp(val, TLS_MD_MASTER_SECRET_CONST,
475 TLS_MD_MASTER_SECRET_CONST_SIZE) == 0)
476 goto err1;
477 if (memcmp(val, TLS_MD_KEY_EXPANSION_CONST,
478 TLS_MD_KEY_EXPANSION_CONST_SIZE) == 0)
479 goto err1;
480
481 rv = tls1_PRF(s, s->session->master_key, s->session->master_key_length,
482 val, vallen, NULL, 0, NULL, 0, NULL, 0, NULL, 0, out, olen);
483
484 goto ret;
485 err1:
486 SSLerror(s, SSL_R_TLS_ILLEGAL_EXPORTER_LABEL);
487 rv = 0;
488 goto ret;
489 err2:
490 SSLerror(s, ERR_R_MALLOC_FAILURE);
491 rv = 0;
492 ret:
493 free(val);
494
495 return (rv);
496}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-02-12 15:44:15 +0000