1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
57 /* ====================================================================
58 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * openssl-core@openssl.org.
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com).
110 /* ====================================================================
111 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
112 * ECC cipher suite support in OpenSSL originally developed by
113 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115 /* ====================================================================
116 * Copyright 2005 Nokia. All rights reserved.
118 * The portions of the attached software ("Contribution") is developed by
119 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
122 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
123 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
124 * support (see RFC 4279) to OpenSSL.
126 * No patent licenses or other rights except those expressly stated in
127 * the OpenSSL open source license shall be deemed granted or received
128 * expressly, by implication, estoppel, or otherwise.
130 * No assurances are provided by Nokia that the Contribution does not
131 * infringe the patent or other intellectual property rights of any third
132 * party or that the license provides you with all the necessary rights
133 * to make use of the Contribution.
135 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
136 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
137 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
138 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
143 #include <openssl/objects.h>
144 #ifndef OPENSSL_NO_COMP
145 # include <openssl/comp.h>
147 #ifndef OPENSSL_NO_ENGINE
148 # include <openssl/engine.h>
150 #include "ssl_locl.h"
152 #define SSL_ENC_DES_IDX 0
153 #define SSL_ENC_3DES_IDX 1
154 #define SSL_ENC_RC4_IDX 2
155 #define SSL_ENC_RC2_IDX 3
156 #define SSL_ENC_IDEA_IDX 4
157 #define SSL_ENC_NULL_IDX 5
158 #define SSL_ENC_AES128_IDX 6
159 #define SSL_ENC_AES256_IDX 7
160 #define SSL_ENC_CAMELLIA128_IDX 8
161 #define SSL_ENC_CAMELLIA256_IDX 9
162 #define SSL_ENC_GOST89_IDX 10
163 #define SSL_ENC_SEED_IDX 11
164 #define SSL_ENC_AES128GCM_IDX 12
165 #define SSL_ENC_AES256GCM_IDX 13
166 #define SSL_ENC_AES128CCM_IDX 14
167 #define SSL_ENC_AES256CCM_IDX 15
168 #define SSL_ENC_AES128CCM8_IDX 16
169 #define SSL_ENC_AES256CCM8_IDX 17
170 #define SSL_ENC_GOST8912_IDX 18
171 #define SSL_ENC_CHACHA_IDX 19
172 #define SSL_ENC_NUM_IDX 20
174 /* NB: make sure indices in these tables match values above */
181 /* Table of NIDs for each cipher */
182 static const ssl_cipher_table ssl_cipher_table_cipher[SSL_ENC_NUM_IDX] = {
183 {SSL_DES, NID_des_cbc}, /* SSL_ENC_DES_IDX 0 */
184 {SSL_3DES, NID_des_ede3_cbc}, /* SSL_ENC_3DES_IDX 1 */
185 {SSL_RC4, NID_rc4}, /* SSL_ENC_RC4_IDX 2 */
186 {SSL_RC2, NID_rc2_cbc}, /* SSL_ENC_RC2_IDX 3 */
187 {SSL_IDEA, NID_idea_cbc}, /* SSL_ENC_IDEA_IDX 4 */
188 {SSL_eNULL, NID_undef}, /* SSL_ENC_NULL_IDX 5 */
189 {SSL_AES128, NID_aes_128_cbc}, /* SSL_ENC_AES128_IDX 6 */
190 {SSL_AES256, NID_aes_256_cbc}, /* SSL_ENC_AES256_IDX 7 */
191 {SSL_CAMELLIA128, NID_camellia_128_cbc}, /* SSL_ENC_CAMELLIA128_IDX 8 */
192 {SSL_CAMELLIA256, NID_camellia_256_cbc}, /* SSL_ENC_CAMELLIA256_IDX 9 */
193 {SSL_eGOST2814789CNT, NID_gost89_cnt}, /* SSL_ENC_GOST89_IDX 10 */
194 {SSL_SEED, NID_seed_cbc}, /* SSL_ENC_SEED_IDX 11 */
195 {SSL_AES128GCM, NID_aes_128_gcm}, /* SSL_ENC_AES128GCM_IDX 12 */
196 {SSL_AES256GCM, NID_aes_256_gcm}, /* SSL_ENC_AES256GCM_IDX 13 */
197 {SSL_AES128CCM, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM_IDX 14 */
198 {SSL_AES256CCM, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM_IDX 15 */
199 {SSL_AES128CCM8, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM8_IDX 16 */
200 {SSL_AES256CCM8, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM8_IDX 17 */
201 {SSL_eGOST2814789CNT12, NID_gost89_cnt_12}, /* SSL_ENC_GOST8912_IDX */
202 {SSL_CHACHA20POLY1305, NID_chacha20_poly1305},
205 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX] = {
206 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
210 #define SSL_COMP_NULL_IDX 0
211 #define SSL_COMP_ZLIB_IDX 1
212 #define SSL_COMP_NUM_IDX 2
214 static STACK_OF(SSL_COMP) *ssl_comp_methods = NULL;
217 * Constant SSL_MAX_DIGEST equal to size of digests array should be defined
221 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
223 /* NB: make sure indices in this table matches values above */
224 static const ssl_cipher_table ssl_cipher_table_mac[SSL_MD_NUM_IDX] = {
225 {SSL_MD5, NID_md5}, /* SSL_MD_MD5_IDX 0 */
226 {SSL_SHA1, NID_sha1}, /* SSL_MD_SHA1_IDX 1 */
227 {SSL_GOST94, NID_id_GostR3411_94}, /* SSL_MD_GOST94_IDX 2 */
228 {SSL_GOST89MAC, NID_id_Gost28147_89_MAC}, /* SSL_MD_GOST89MAC_IDX 3 */
229 {SSL_SHA256, NID_sha256}, /* SSL_MD_SHA256_IDX 4 */
230 {SSL_SHA384, NID_sha384}, /* SSL_MD_SHA384_IDX 5 */
231 {SSL_GOST12_256, NID_id_GostR3411_2012_256}, /* SSL_MD_GOST12_256_IDX 6 */
232 {SSL_GOST89MAC12, NID_gost_mac_12}, /* SSL_MD_GOST89MAC12_IDX 7 */
233 {SSL_GOST12_512, NID_id_GostR3411_2012_512}, /* SSL_MD_GOST12_512_IDX 8 */
234 {0, NID_md5_sha1}, /* SSL_MD_MD5_SHA1_IDX 9 */
235 {0, NID_sha224}, /* SSL_MD_SHA224_IDX 10 */
236 {0, NID_sha512} /* SSL_MD_SHA512_IDX 11 */
239 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX] = {
240 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
243 /* Utility function for table lookup */
244 static int ssl_cipher_info_find(const ssl_cipher_table * table,
245 size_t table_cnt, uint32_t mask)
248 for (i = 0; i < table_cnt; i++, table++) {
249 if (table->mask == mask)
255 #define ssl_cipher_info_lookup(table, x) \
256 ssl_cipher_info_find(table, OSSL_NELEM(table), x)
259 * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation
260 * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is
263 static int ssl_mac_pkey_id[SSL_MD_NUM_IDX] = {
264 /* MD5, SHA, GOST94, MAC89 */
265 EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef,
266 /* SHA256, SHA384, GOST2012_256, MAC89-12 */
267 EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef,
272 static int ssl_mac_secret_size[SSL_MD_NUM_IDX] = {
273 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
277 #define CIPHER_KILL 2
280 #define CIPHER_SPECIAL 5
282 typedef struct cipher_order_st {
283 const SSL_CIPHER *cipher;
286 struct cipher_order_st *next, *prev;
289 static const SSL_CIPHER cipher_aliases[] = {
290 /* "ALL" doesn't include eNULL (must be specifically enabled) */
291 {0, SSL_TXT_ALL, 0, 0, 0, ~SSL_eNULL, 0, 0, 0, 0, 0, 0},
292 /* "COMPLEMENTOFALL" */
293 {0, SSL_TXT_CMPALL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
296 * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in
299 {0, SSL_TXT_CMPDEF, 0, 0, 0, ~SSL_eNULL, 0, 0, SSL_NOT_DEFAULT, 0, 0, 0},
302 * key exchange aliases (some of those using only a single bit here
303 * combine multiple key exchange algs according to the RFCs, e.g. kDHE
304 * combines DHE_DSS and DHE_RSA)
306 {0, SSL_TXT_kRSA, 0, SSL_kRSA, 0, 0, 0, 0, 0, 0, 0, 0},
308 {0, SSL_TXT_kEDH, 0, SSL_kDHE, 0, 0, 0, 0, 0, 0, 0, 0},
309 {0, SSL_TXT_kDHE, 0, SSL_kDHE, 0, 0, 0, 0, 0, 0, 0, 0},
310 {0, SSL_TXT_DH, 0, SSL_kDHE, 0, 0, 0, 0, 0, 0, 0,
313 {0, SSL_TXT_kEECDH, 0, SSL_kECDHE, 0, 0, 0, 0, 0, 0, 0, 0},
314 {0, SSL_TXT_kECDHE, 0, SSL_kECDHE, 0, 0, 0, 0, 0, 0, 0, 0},
315 {0, SSL_TXT_ECDH, 0, SSL_kECDHE, 0, 0, 0, 0, 0,
318 {0, SSL_TXT_kPSK, 0, SSL_kPSK, 0, 0, 0, 0, 0, 0, 0, 0},
319 {0, SSL_TXT_kRSAPSK, 0, SSL_kRSAPSK, 0, 0, 0, 0, 0, 0, 0, 0},
320 {0, SSL_TXT_kECDHEPSK, 0, SSL_kECDHEPSK, 0, 0, 0, 0, 0, 0, 0, 0},
321 {0, SSL_TXT_kDHEPSK, 0, SSL_kDHEPSK, 0, 0, 0, 0, 0, 0, 0, 0},
322 {0, SSL_TXT_kSRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
323 {0, SSL_TXT_kGOST, 0, SSL_kGOST, 0, 0, 0, 0, 0, 0, 0, 0},
325 /* server authentication aliases */
326 {0, SSL_TXT_aRSA, 0, 0, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
327 {0, SSL_TXT_aDSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
328 {0, SSL_TXT_DSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
329 {0, SSL_TXT_aNULL, 0, 0, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
330 {0, SSL_TXT_aECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
331 {0, SSL_TXT_ECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
332 {0, SSL_TXT_aPSK, 0, 0, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0},
333 {0, SSL_TXT_aGOST01, 0, 0, SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0},
334 {0, SSL_TXT_aGOST12, 0, 0, SSL_aGOST12, 0, 0, 0, 0, 0, 0, 0},
335 {0, SSL_TXT_aGOST, 0, 0, SSL_aGOST01 | SSL_aGOST12, 0, 0, 0,
337 {0, SSL_TXT_aSRP, 0, 0, SSL_aSRP, 0, 0, 0, 0, 0, 0, 0},
339 /* aliases combining key exchange and server authentication */
340 {0, SSL_TXT_EDH, 0, SSL_kDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
341 {0, SSL_TXT_DHE, 0, SSL_kDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
342 {0, SSL_TXT_EECDH, 0, SSL_kECDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
343 {0, SSL_TXT_ECDHE, 0, SSL_kECDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
344 {0, SSL_TXT_NULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
345 {0, SSL_TXT_RSA, 0, SSL_kRSA, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
346 {0, SSL_TXT_ADH, 0, SSL_kDHE, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
347 {0, SSL_TXT_AECDH, 0, SSL_kECDHE, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
348 {0, SSL_TXT_PSK, 0, SSL_PSK, 0, 0, 0, 0, 0, 0, 0, 0},
349 {0, SSL_TXT_SRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
351 /* symmetric encryption aliases */
352 {0, SSL_TXT_DES, 0, 0, 0, SSL_DES, 0, 0, 0, 0, 0, 0},
353 {0, SSL_TXT_3DES, 0, 0, 0, SSL_3DES, 0, 0, 0, 0, 0, 0},
354 {0, SSL_TXT_RC4, 0, 0, 0, SSL_RC4, 0, 0, 0, 0, 0, 0},
355 {0, SSL_TXT_RC2, 0, 0, 0, SSL_RC2, 0, 0, 0, 0, 0, 0},
356 {0, SSL_TXT_IDEA, 0, 0, 0, SSL_IDEA, 0, 0, 0, 0, 0, 0},
357 {0, SSL_TXT_SEED, 0, 0, 0, SSL_SEED, 0, 0, 0, 0, 0, 0},
358 {0, SSL_TXT_eNULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
359 {0, SSL_TXT_GOST, 0, 0, 0, SSL_eGOST2814789CNT | SSL_eGOST2814789CNT12, 0,
361 {0, SSL_TXT_AES128, 0, 0, 0, SSL_AES128 | SSL_AES128GCM | SSL_AES128CCM | SSL_AES128CCM8, 0,
363 {0, SSL_TXT_AES256, 0, 0, 0, SSL_AES256 | SSL_AES256GCM | SSL_AES256CCM | SSL_AES256CCM8, 0,
365 {0, SSL_TXT_AES, 0, 0, 0, SSL_AES, 0, 0, 0, 0, 0, 0},
366 {0, SSL_TXT_AES_GCM, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM, 0, 0, 0, 0,
368 {0, SSL_TXT_AES_CCM, 0, 0, 0, SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8, 0, 0, 0, 0,
370 {0, SSL_TXT_AES_CCM_8, 0, 0, 0, SSL_AES128CCM8 | SSL_AES256CCM8, 0, 0, 0, 0,
372 {0, SSL_TXT_CAMELLIA128, 0, 0, 0, SSL_CAMELLIA128, 0, 0, 0, 0, 0, 0},
373 {0, SSL_TXT_CAMELLIA256, 0, 0, 0, SSL_CAMELLIA256, 0, 0, 0, 0, 0, 0},
374 {0, SSL_TXT_CAMELLIA, 0, 0, 0, SSL_CAMELLIA, 0, 0, 0, 0, 0, 0},
375 {0, SSL_TXT_CHACHA20, 0, 0, 0, SSL_CHACHA20, 0, 0, 0, 0, 0, 0 },
378 {0, SSL_TXT_MD5, 0, 0, 0, 0, SSL_MD5, 0, 0, 0, 0, 0},
379 {0, SSL_TXT_SHA1, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
380 {0, SSL_TXT_SHA, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
381 {0, SSL_TXT_GOST94, 0, 0, 0, 0, SSL_GOST94, 0, 0, 0, 0, 0},
382 {0, SSL_TXT_GOST89MAC, 0, 0, 0, 0, SSL_GOST89MAC | SSL_GOST89MAC12, 0, 0,
384 {0, SSL_TXT_SHA256, 0, 0, 0, 0, SSL_SHA256, 0, 0, 0, 0, 0},
385 {0, SSL_TXT_SHA384, 0, 0, 0, 0, SSL_SHA384, 0, 0, 0, 0, 0},
386 {0, SSL_TXT_GOST12, 0, 0, 0, 0, SSL_GOST12_256, 0, 0, 0, 0, 0},
388 /* protocol version aliases */
389 {0, SSL_TXT_SSLV3, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0},
390 {0, SSL_TXT_TLSV1, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0},
391 {0, "TLSv1.0", 0, 0, 0, 0, 0, SSL_TLSV1, 0, 0, 0, 0},
392 {0, SSL_TXT_TLSV1_2, 0, 0, 0, 0, 0, SSL_TLSV1_2, 0, 0, 0, 0},
394 /* strength classes */
395 {0, SSL_TXT_LOW, 0, 0, 0, 0, 0, 0, SSL_LOW, 0, 0, 0},
396 {0, SSL_TXT_MEDIUM, 0, 0, 0, 0, 0, 0, SSL_MEDIUM, 0, 0, 0},
397 {0, SSL_TXT_HIGH, 0, 0, 0, 0, 0, 0, SSL_HIGH, 0, 0, 0},
398 /* FIPS 140-2 approved ciphersuite */
399 {0, SSL_TXT_FIPS, 0, 0, 0, ~SSL_eNULL, 0, 0, SSL_FIPS, 0, 0, 0},
401 /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */
402 {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA, 0,
403 SSL_kDHE, SSL_aDSS, SSL_3DES, SSL_SHA1, SSL_SSLV3,
404 SSL_HIGH | SSL_FIPS, 0, 0, 0,},
405 {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA, 0,
406 SSL_kDHE, SSL_aRSA, SSL_3DES, SSL_SHA1, SSL_SSLV3,
407 SSL_HIGH | SSL_FIPS, 0, 0, 0,},
412 * Search for public key algorithm with given name and return its pkey_id if
413 * it is available. Otherwise return 0
415 #ifdef OPENSSL_NO_ENGINE
417 static int get_optional_pkey_id(const char *pkey_name)
419 const EVP_PKEY_ASN1_METHOD *ameth;
421 ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1);
422 if (ameth && EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL,
431 static int get_optional_pkey_id(const char *pkey_name)
433 const EVP_PKEY_ASN1_METHOD *ameth;
434 ENGINE *tmpeng = NULL;
436 ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1);
438 if (EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL,
442 ENGINE_finish(tmpeng);
448 /* masks of disabled algorithms */
449 static uint32_t disabled_enc_mask;
450 static uint32_t disabled_mac_mask;
451 static uint32_t disabled_mkey_mask;
452 static uint32_t disabled_auth_mask;
454 void ssl_load_ciphers(void)
457 const ssl_cipher_table *t;
458 disabled_enc_mask = 0;
459 for (i = 0, t = ssl_cipher_table_cipher; i < SSL_ENC_NUM_IDX; i++, t++) {
460 if (t->nid == NID_undef) {
461 ssl_cipher_methods[i] = NULL;
463 const EVP_CIPHER *cipher = EVP_get_cipherbynid(t->nid);
464 ssl_cipher_methods[i] = cipher;
466 disabled_enc_mask |= t->mask;
469 #ifdef SSL_FORBID_ENULL
470 disabled_enc_mask |= SSL_eNULL;
472 disabled_mac_mask = 0;
473 for (i = 0, t = ssl_cipher_table_mac; i < SSL_MD_NUM_IDX; i++, t++) {
474 const EVP_MD *md = EVP_get_digestbynid(t->nid);
475 ssl_digest_methods[i] = md;
477 disabled_mac_mask |= t->mask;
479 ssl_mac_secret_size[i] = EVP_MD_size(md);
480 OPENSSL_assert(ssl_mac_secret_size[i] >= 0);
483 /* Make sure we can access MD5 and SHA1 */
484 OPENSSL_assert(ssl_digest_methods[SSL_MD_MD5_IDX] != NULL);
485 OPENSSL_assert(ssl_digest_methods[SSL_MD_SHA1_IDX] != NULL);
487 disabled_mkey_mask = 0;
488 disabled_auth_mask = 0;
490 #ifdef OPENSSL_NO_RSA
491 disabled_mkey_mask |= SSL_kRSA | SSL_kRSAPSK;
492 disabled_auth_mask |= SSL_aRSA;
494 #ifdef OPENSSL_NO_DSA
495 disabled_auth_mask |= SSL_aDSS;
498 disabled_mkey_mask |= SSL_kDHE | SSL_kDHEPSK;
501 disabled_mkey_mask |= SSL_kECDHEPSK;
502 disabled_auth_mask |= SSL_aECDSA;
504 #ifdef OPENSSL_NO_PSK
505 disabled_mkey_mask |= SSL_PSK;
506 disabled_auth_mask |= SSL_aPSK;
508 #ifdef OPENSSL_NO_SRP
509 disabled_mkey_mask |= SSL_kSRP;
513 * Check for presence of GOST 34.10 algorithms, and if they are not
514 * present, disable appropriate auth and key exchange
516 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac");
517 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) {
518 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32;
520 disabled_mac_mask |= SSL_GOST89MAC;
523 ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX] = get_optional_pkey_id("gost-mac-12");
524 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX]) {
525 ssl_mac_secret_size[SSL_MD_GOST89MAC12_IDX] = 32;
527 disabled_mac_mask |= SSL_GOST89MAC12;
530 if (!get_optional_pkey_id("gost2001"))
531 disabled_auth_mask |= SSL_aGOST01 | SSL_aGOST12;
532 if (!get_optional_pkey_id("gost2012_256"))
533 disabled_auth_mask |= SSL_aGOST12;
534 if (!get_optional_pkey_id("gost2012_512"))
535 disabled_auth_mask |= SSL_aGOST12;
537 * Disable GOST key exchange if no GOST signature algs are available *
539 if ((disabled_auth_mask & (SSL_aGOST01 | SSL_aGOST12)) == (SSL_aGOST01 | SSL_aGOST12))
540 disabled_mkey_mask |= SSL_kGOST;
543 #ifndef OPENSSL_NO_COMP
545 static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b)
547 return ((*a)->id - (*b)->id);
550 static void load_builtin_compressions(void)
552 int got_write_lock = 0;
554 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
555 if (ssl_comp_methods == NULL) {
556 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
557 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
560 if (ssl_comp_methods == NULL) {
561 SSL_COMP *comp = NULL;
562 COMP_METHOD *method = COMP_zlib();
564 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
565 ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp);
566 if (COMP_get_type(method) != NID_undef
567 && ssl_comp_methods != NULL) {
568 comp = OPENSSL_malloc(sizeof(*comp));
570 comp->method = method;
571 comp->id = SSL_COMP_ZLIB_IDX;
572 comp->name = COMP_get_name(method);
573 sk_SSL_COMP_push(ssl_comp_methods, comp);
574 sk_SSL_COMP_sort(ssl_comp_methods);
577 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
582 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
584 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
588 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
589 const EVP_MD **md, int *mac_pkey_type,
590 int *mac_secret_size, SSL_COMP **comp, int use_etm)
600 #ifndef OPENSSL_NO_COMP
601 load_builtin_compressions();
605 ctmp.id = s->compress_meth;
606 if (ssl_comp_methods != NULL) {
607 i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp);
609 *comp = sk_SSL_COMP_value(ssl_comp_methods, i);
613 /* If were only interested in comp then return success */
614 if ((enc == NULL) && (md == NULL))
618 if ((enc == NULL) || (md == NULL))
621 i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc);
626 if (i == SSL_ENC_NULL_IDX)
627 *enc = EVP_enc_null();
629 *enc = ssl_cipher_methods[i];
632 i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac);
635 if (mac_pkey_type != NULL)
636 *mac_pkey_type = NID_undef;
637 if (mac_secret_size != NULL)
638 *mac_secret_size = 0;
639 if (c->algorithm_mac == SSL_AEAD)
640 mac_pkey_type = NULL;
642 *md = ssl_digest_methods[i];
643 if (mac_pkey_type != NULL)
644 *mac_pkey_type = ssl_mac_pkey_id[i];
645 if (mac_secret_size != NULL)
646 *mac_secret_size = ssl_mac_secret_size[i];
649 if ((*enc != NULL) &&
650 (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER))
651 && (!mac_pkey_type || *mac_pkey_type != NID_undef)) {
652 const EVP_CIPHER *evp;
657 if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR ||
658 s->ssl_version < TLS1_VERSION)
664 if (c->algorithm_enc == SSL_RC4 &&
665 c->algorithm_mac == SSL_MD5 &&
666 (evp = EVP_get_cipherbyname("RC4-HMAC-MD5")))
667 *enc = evp, *md = NULL;
668 else if (c->algorithm_enc == SSL_AES128 &&
669 c->algorithm_mac == SSL_SHA1 &&
670 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
671 *enc = evp, *md = NULL;
672 else if (c->algorithm_enc == SSL_AES256 &&
673 c->algorithm_mac == SSL_SHA1 &&
674 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
675 *enc = evp, *md = NULL;
676 else if (c->algorithm_enc == SSL_AES128 &&
677 c->algorithm_mac == SSL_SHA256 &&
678 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA256")))
679 *enc = evp, *md = NULL;
680 else if (c->algorithm_enc == SSL_AES256 &&
681 c->algorithm_mac == SSL_SHA256 &&
682 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA256")))
683 *enc = evp, *md = NULL;
689 const EVP_MD *ssl_md(int idx)
691 idx &= SSL_HANDSHAKE_MAC_MASK;
692 if (idx < 0 || idx >= SSL_MD_NUM_IDX)
694 return ssl_digest_methods[idx];
697 const EVP_MD *ssl_handshake_md(SSL *s)
699 return ssl_md(ssl_get_algorithm2(s));
702 const EVP_MD *ssl_prf_md(SSL *s)
704 return ssl_md(ssl_get_algorithm2(s) >> TLS1_PRF_DGST_SHIFT);
707 #define ITEM_SEP(a) \
708 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
710 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
717 if (curr->prev != NULL)
718 curr->prev->next = curr->next;
719 if (curr->next != NULL)
720 curr->next->prev = curr->prev;
721 (*tail)->next = curr;
727 static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
734 if (curr->next != NULL)
735 curr->next->prev = curr->prev;
736 if (curr->prev != NULL)
737 curr->prev->next = curr->next;
738 (*head)->prev = curr;
744 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
746 uint32_t disabled_mkey,
747 uint32_t disabled_auth,
748 uint32_t disabled_enc,
749 uint32_t disabled_mac,
750 uint32_t disabled_ssl,
751 CIPHER_ORDER *co_list,
752 CIPHER_ORDER **head_p,
753 CIPHER_ORDER **tail_p)
759 * We have num_of_ciphers descriptions compiled in, depending on the
760 * method selected (SSLv3, TLSv1 etc).
761 * These will later be sorted in a linked list with at most num
765 /* Get the initial list of ciphers */
766 co_list_num = 0; /* actual count of ciphers */
767 for (i = 0; i < num_of_ciphers; i++) {
768 c = ssl_method->get_cipher(i);
769 /* drop those that use any of that is not available */
770 if ((c != NULL) && c->valid &&
771 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) &&
772 !(c->algorithm_mkey & disabled_mkey) &&
773 !(c->algorithm_auth & disabled_auth) &&
774 !(c->algorithm_enc & disabled_enc) &&
775 !(c->algorithm_mac & disabled_mac) &&
776 !(c->algorithm_ssl & disabled_ssl)) {
777 co_list[co_list_num].cipher = c;
778 co_list[co_list_num].next = NULL;
779 co_list[co_list_num].prev = NULL;
780 co_list[co_list_num].active = 0;
783 * if (!sk_push(ca_list,(char *)c)) goto err;
789 * Prepare linked list from list entries
791 if (co_list_num > 0) {
792 co_list[0].prev = NULL;
794 if (co_list_num > 1) {
795 co_list[0].next = &co_list[1];
797 for (i = 1; i < co_list_num - 1; i++) {
798 co_list[i].prev = &co_list[i - 1];
799 co_list[i].next = &co_list[i + 1];
802 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
805 co_list[co_list_num - 1].next = NULL;
807 *head_p = &co_list[0];
808 *tail_p = &co_list[co_list_num - 1];
812 static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list,
813 int num_of_group_aliases,
814 uint32_t disabled_mkey,
815 uint32_t disabled_auth,
816 uint32_t disabled_enc,
817 uint32_t disabled_mac,
818 uint32_t disabled_ssl,
821 CIPHER_ORDER *ciph_curr;
822 const SSL_CIPHER **ca_curr;
824 uint32_t mask_mkey = ~disabled_mkey;
825 uint32_t mask_auth = ~disabled_auth;
826 uint32_t mask_enc = ~disabled_enc;
827 uint32_t mask_mac = ~disabled_mac;
828 uint32_t mask_ssl = ~disabled_ssl;
831 * First, add the real ciphers as already collected
835 while (ciph_curr != NULL) {
836 *ca_curr = ciph_curr->cipher;
838 ciph_curr = ciph_curr->next;
842 * Now we add the available ones from the cipher_aliases[] table.
843 * They represent either one or more algorithms, some of which
844 * in any affected category must be supported (set in enabled_mask),
845 * or represent a cipher strength value (will be added in any case because algorithms=0).
847 for (i = 0; i < num_of_group_aliases; i++) {
848 uint32_t algorithm_mkey = cipher_aliases[i].algorithm_mkey;
849 uint32_t algorithm_auth = cipher_aliases[i].algorithm_auth;
850 uint32_t algorithm_enc = cipher_aliases[i].algorithm_enc;
851 uint32_t algorithm_mac = cipher_aliases[i].algorithm_mac;
852 uint32_t algorithm_ssl = cipher_aliases[i].algorithm_ssl;
855 if ((algorithm_mkey & mask_mkey) == 0)
859 if ((algorithm_auth & mask_auth) == 0)
863 if ((algorithm_enc & mask_enc) == 0)
867 if ((algorithm_mac & mask_mac) == 0)
871 if ((algorithm_ssl & mask_ssl) == 0)
874 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
878 *ca_curr = NULL; /* end of list */
881 static void ssl_cipher_apply_rule(uint32_t cipher_id, uint32_t alg_mkey,
882 uint32_t alg_auth, uint32_t alg_enc,
883 uint32_t alg_mac, uint32_t alg_ssl,
884 uint32_t algo_strength, int rule,
885 int32_t strength_bits, CIPHER_ORDER **head_p,
886 CIPHER_ORDER **tail_p)
888 CIPHER_ORDER *head, *tail, *curr, *next, *last;
889 const SSL_CIPHER *cp;
894 "Applying rule %d with %08x/%08x/%08x/%08x/%08x %08x (%d)\n",
895 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl,
896 algo_strength, strength_bits);
899 if (rule == CIPHER_DEL)
900 reverse = 1; /* needed to maintain sorting between
901 * currently deleted ciphers */
924 next = reverse ? curr->prev : curr->next;
929 * Selection criteria is either the value of strength_bits
930 * or the algorithms used.
932 if (strength_bits >= 0) {
933 if (strength_bits != cp->strength_bits)
938 "\nName: %s:\nAlgo = %08x/%08x/%08x/%08x/%08x Algo_strength = %08x\n",
939 cp->name, cp->algorithm_mkey, cp->algorithm_auth,
940 cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl,
943 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
945 if (alg_auth && !(alg_auth & cp->algorithm_auth))
947 if (alg_enc && !(alg_enc & cp->algorithm_enc))
949 if (alg_mac && !(alg_mac & cp->algorithm_mac))
951 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
953 if (algo_strength && !(algo_strength & cp->algo_strength))
955 if ((algo_strength & SSL_DEFAULT_MASK)
956 && !(algo_strength & SSL_DEFAULT_MASK & cp->algo_strength))
961 fprintf(stderr, "Action = %d\n", rule);
964 /* add the cipher if it has not been added yet. */
965 if (rule == CIPHER_ADD) {
968 ll_append_tail(&head, curr, &tail);
972 /* Move the added cipher to this location */
973 else if (rule == CIPHER_ORD) {
976 ll_append_tail(&head, curr, &tail);
978 } else if (rule == CIPHER_DEL) {
982 * most recently deleted ciphersuites get best positions for
983 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
984 * in reverse to maintain the order)
986 ll_append_head(&head, curr, &tail);
989 } else if (rule == CIPHER_KILL) {
994 curr->prev->next = curr->next;
998 if (curr->next != NULL)
999 curr->next->prev = curr->prev;
1000 if (curr->prev != NULL)
1001 curr->prev->next = curr->next;
1011 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
1012 CIPHER_ORDER **tail_p)
1014 int32_t max_strength_bits;
1015 int i, *number_uses;
1019 * This routine sorts the ciphers with descending strength. The sorting
1020 * must keep the pre-sorted sequence, so we apply the normal sorting
1021 * routine as '+' movement to the end of the list.
1023 max_strength_bits = 0;
1025 while (curr != NULL) {
1026 if (curr->active && (curr->cipher->strength_bits > max_strength_bits))
1027 max_strength_bits = curr->cipher->strength_bits;
1031 number_uses = OPENSSL_zalloc(sizeof(int) * (max_strength_bits + 1));
1032 if (number_uses == NULL) {
1033 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE);
1038 * Now find the strength_bits values actually used
1041 while (curr != NULL) {
1043 number_uses[curr->cipher->strength_bits]++;
1047 * Go through the list of used strength_bits values in descending
1050 for (i = max_strength_bits; i >= 0; i--)
1051 if (number_uses[i] > 0)
1052 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p,
1055 OPENSSL_free(number_uses);
1059 static int ssl_cipher_process_rulestr(const char *rule_str,
1060 CIPHER_ORDER **head_p,
1061 CIPHER_ORDER **tail_p,
1062 const SSL_CIPHER **ca_list, CERT *c)
1064 uint32_t alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength;
1065 const char *l, *buf;
1066 int j, multi, found, rule, retval, ok, buflen;
1067 uint32_t cipher_id = 0;
1080 } else if (ch == '+') {
1083 } else if (ch == '!') {
1086 } else if (ch == '@') {
1087 rule = CIPHER_SPECIAL;
1109 #ifndef CHARSET_EBCDIC
1110 while (((ch >= 'A') && (ch <= 'Z')) ||
1111 ((ch >= '0') && (ch <= '9')) ||
1112 ((ch >= 'a') && (ch <= 'z')) ||
1113 (ch == '-') || (ch == '.') || (ch == '='))
1115 while (isalnum(ch) || (ch == '-') || (ch == '.') || (ch == '='))
1124 * We hit something we cannot deal with,
1125 * it is no command or separator nor
1126 * alphanumeric, so we call this an error.
1128 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1129 SSL_R_INVALID_COMMAND);
1135 if (rule == CIPHER_SPECIAL) {
1136 found = 0; /* unused -- avoid compiler warning */
1137 break; /* special treatment */
1140 /* check for multi-part specification */
1148 * Now search for the cipher alias in the ca_list. Be careful
1149 * with the strncmp, because the "buflen" limitation
1150 * will make the rule "ADH:SOME" and the cipher
1151 * "ADH-MY-CIPHER" look like a match for buflen=3.
1152 * So additionally check whether the cipher name found
1153 * has the correct length. We can save a strlen() call:
1154 * just checking for the '\0' at the right place is
1155 * sufficient, we have to strncmp() anyway. (We cannot
1156 * use strcmp(), because buf is not '\0' terminated.)
1160 while (ca_list[j]) {
1161 if (strncmp(buf, ca_list[j]->name, buflen) == 0
1162 && (ca_list[j]->name[buflen] == '\0')) {
1170 break; /* ignore this entry */
1172 if (ca_list[j]->algorithm_mkey) {
1174 alg_mkey &= ca_list[j]->algorithm_mkey;
1180 alg_mkey = ca_list[j]->algorithm_mkey;
1183 if (ca_list[j]->algorithm_auth) {
1185 alg_auth &= ca_list[j]->algorithm_auth;
1191 alg_auth = ca_list[j]->algorithm_auth;
1194 if (ca_list[j]->algorithm_enc) {
1196 alg_enc &= ca_list[j]->algorithm_enc;
1202 alg_enc = ca_list[j]->algorithm_enc;
1205 if (ca_list[j]->algorithm_mac) {
1207 alg_mac &= ca_list[j]->algorithm_mac;
1213 alg_mac = ca_list[j]->algorithm_mac;
1216 if (ca_list[j]->algo_strength) {
1217 if (algo_strength) {
1218 algo_strength &= ca_list[j]->algo_strength;
1219 if (!algo_strength) {
1224 algo_strength = ca_list[j]->algo_strength;
1227 if (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) {
1228 if (algo_strength & SSL_DEFAULT_MASK) {
1230 (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) |
1232 if (!(algo_strength & SSL_DEFAULT_MASK)) {
1238 ca_list[j]->algo_strength & SSL_DEFAULT_MASK;
1241 if (ca_list[j]->valid) {
1243 * explicit ciphersuite found; its protocol version does not
1244 * become part of the search pattern!
1247 cipher_id = ca_list[j]->id;
1250 * not an explicit ciphersuite; only in this case, the
1251 * protocol version is considered part of the search pattern
1254 if (ca_list[j]->algorithm_ssl) {
1256 alg_ssl &= ca_list[j]->algorithm_ssl;
1262 alg_ssl = ca_list[j]->algorithm_ssl;
1271 * Ok, we have the rule, now apply it
1273 if (rule == CIPHER_SPECIAL) { /* special command */
1275 if ((buflen == 8) && strncmp(buf, "STRENGTH", 8) == 0)
1276 ok = ssl_cipher_strength_sort(head_p, tail_p);
1277 else if (buflen == 10 && strncmp(buf, "SECLEVEL=", 9) == 0) {
1278 int level = buf[9] - '0';
1279 if (level < 0 || level > 5) {
1280 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1281 SSL_R_INVALID_COMMAND);
1283 c->sec_level = level;
1287 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1288 SSL_R_INVALID_COMMAND);
1292 * We do not support any "multi" options
1293 * together with "@", so throw away the
1294 * rest of the command, if any left, until
1295 * end or ':' is found.
1297 while ((*l != '\0') && !ITEM_SEP(*l))
1300 ssl_cipher_apply_rule(cipher_id,
1301 alg_mkey, alg_auth, alg_enc, alg_mac,
1302 alg_ssl, algo_strength, rule, -1, head_p,
1305 while ((*l != '\0') && !ITEM_SEP(*l))
1315 #ifndef OPENSSL_NO_EC
1316 static int check_suiteb_cipher_list(const SSL_METHOD *meth, CERT *c,
1317 const char **prule_str)
1319 unsigned int suiteb_flags = 0, suiteb_comb2 = 0;
1320 if (strncmp(*prule_str, "SUITEB128ONLY", 13) == 0) {
1321 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS_ONLY;
1322 } else if (strncmp(*prule_str, "SUITEB128C2", 11) == 0) {
1324 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS;
1325 } else if (strncmp(*prule_str, "SUITEB128", 9) == 0) {
1326 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS;
1327 } else if (strncmp(*prule_str, "SUITEB192", 9) == 0) {
1328 suiteb_flags = SSL_CERT_FLAG_SUITEB_192_LOS;
1332 c->cert_flags &= ~SSL_CERT_FLAG_SUITEB_128_LOS;
1333 c->cert_flags |= suiteb_flags;
1335 suiteb_flags = c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS;
1339 /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */
1341 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)) {
1342 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1343 SSL_R_AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE);
1346 # ifndef OPENSSL_NO_EC
1347 switch (suiteb_flags) {
1348 case SSL_CERT_FLAG_SUITEB_128_LOS:
1350 *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384";
1353 "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384";
1355 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY:
1356 *prule_str = "ECDHE-ECDSA-AES128-GCM-SHA256";
1358 case SSL_CERT_FLAG_SUITEB_192_LOS:
1359 *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384";
1364 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1365 SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE);
1371 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER)
1372 **cipher_list, STACK_OF(SSL_CIPHER)
1373 **cipher_list_by_id,
1374 const char *rule_str, CERT *c)
1376 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1377 uint32_t disabled_mkey, disabled_auth, disabled_enc, disabled_mac,
1379 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1381 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1382 const SSL_CIPHER **ca_list = NULL;
1385 * Return with error if nothing to do.
1387 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1389 #ifndef OPENSSL_NO_EC
1390 if (!check_suiteb_cipher_list(ssl_method, c, &rule_str))
1395 * To reduce the work to do we only want to process the compiled
1396 * in algorithms, so we first get the mask of disabled ciphers.
1399 disabled_mkey = disabled_mkey_mask;
1400 disabled_auth = disabled_auth_mask;
1401 disabled_enc = disabled_enc_mask;
1402 disabled_mac = disabled_mac_mask;
1406 * Now we have to collect the available ciphers from the compiled
1407 * in ciphers. We cannot get more than the number compiled in, so
1408 * it is used for allocation.
1410 num_of_ciphers = ssl_method->num_ciphers();
1412 co_list = OPENSSL_malloc(sizeof(*co_list) * num_of_ciphers);
1413 if (co_list == NULL) {
1414 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1415 return (NULL); /* Failure */
1418 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1419 disabled_mkey, disabled_auth, disabled_enc,
1420 disabled_mac, disabled_ssl, co_list, &head,
1423 /* Now arrange all ciphers by preference: */
1426 * Everything else being equal, prefer ephemeral ECDH over other key
1427 * exchange mechanisms
1429 ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head,
1431 ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head,
1434 /* AES is our preferred symmetric cipher */
1435 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head,
1438 /* Temporarily enable everything else for sorting */
1439 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1441 /* Low priority for MD5 */
1442 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head,
1446 * Move anonymous ciphers to the end. Usually, these will remain
1447 * disabled. (For applications that allow them, they aren't too bad, but
1448 * we prefer authenticated ciphers.)
1450 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1454 * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1,
1457 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1459 ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1462 /* RC4 is sort-of broken -- move the the end */
1463 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head,
1467 * Now sort by symmetric encryption strength. The above ordering remains
1468 * in force within each class
1470 if (!ssl_cipher_strength_sort(&head, &tail)) {
1471 OPENSSL_free(co_list);
1475 /* Now disable everything (maintaining the ordering!) */
1476 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1479 * We also need cipher aliases for selecting based on the rule_str.
1480 * There might be two types of entries in the rule_str: 1) names
1481 * of ciphers themselves 2) aliases for groups of ciphers.
1482 * For 1) we need the available ciphers and for 2) the cipher
1483 * groups of cipher_aliases added together in one list (otherwise
1484 * we would be happy with just the cipher_aliases table).
1486 num_of_group_aliases = OSSL_NELEM(cipher_aliases);
1487 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1488 ca_list = OPENSSL_malloc(sizeof(*ca_list) * num_of_alias_max);
1489 if (ca_list == NULL) {
1490 OPENSSL_free(co_list);
1491 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1492 return (NULL); /* Failure */
1494 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1495 disabled_mkey, disabled_auth, disabled_enc,
1496 disabled_mac, disabled_ssl, head);
1499 * If the rule_string begins with DEFAULT, apply the default rule
1500 * before using the (possibly available) additional rules.
1504 if (strncmp(rule_str, "DEFAULT", 7) == 0) {
1505 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1506 &head, &tail, ca_list, c);
1512 if (ok && (strlen(rule_p) > 0))
1513 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list, c);
1515 OPENSSL_free(ca_list); /* Not needed anymore */
1517 if (!ok) { /* Rule processing failure */
1518 OPENSSL_free(co_list);
1523 * Allocate new "cipherstack" for the result, return with error
1524 * if we cannot get one.
1526 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) {
1527 OPENSSL_free(co_list);
1532 * The cipher selection for the list is done. The ciphers are added
1533 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1535 for (curr = head; curr != NULL; curr = curr->next) {
1537 && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) {
1538 if (!sk_SSL_CIPHER_push(cipherstack, curr->cipher)) {
1539 OPENSSL_free(co_list);
1540 sk_SSL_CIPHER_free(cipherstack);
1544 fprintf(stderr, "<%s>\n", curr->cipher->name);
1548 OPENSSL_free(co_list); /* Not needed any longer */
1550 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1551 if (tmp_cipher_list == NULL) {
1552 sk_SSL_CIPHER_free(cipherstack);
1555 sk_SSL_CIPHER_free(*cipher_list);
1556 *cipher_list = cipherstack;
1557 if (*cipher_list_by_id != NULL)
1558 sk_SSL_CIPHER_free(*cipher_list_by_id);
1559 *cipher_list_by_id = tmp_cipher_list;
1560 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,
1561 ssl_cipher_ptr_id_cmp);
1563 sk_SSL_CIPHER_sort(*cipher_list_by_id);
1564 return (cipherstack);
1567 char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
1570 const char *kx, *au, *enc, *mac;
1571 uint32_t alg_mkey, alg_auth, alg_enc, alg_mac;
1572 static const char *format =
1573 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s\n";
1577 buf = OPENSSL_malloc(len);
1580 } else if (len < 128)
1583 alg_mkey = cipher->algorithm_mkey;
1584 alg_auth = cipher->algorithm_auth;
1585 alg_enc = cipher->algorithm_enc;
1586 alg_mac = cipher->algorithm_mac;
1588 ver = SSL_CIPHER_get_version(cipher);
1644 /* New GOST ciphersuites have both SSL_aGOST12 and SSL_aGOST01 bits */
1645 case (SSL_aGOST12 | SSL_aGOST01):
1679 enc = "AESGCM(128)";
1682 enc = "AESGCM(256)";
1685 enc = "AESCCM(128)";
1688 enc = "AESCCM(256)";
1690 case SSL_AES128CCM8:
1691 enc = "AESCCM8(128)";
1693 case SSL_AES256CCM8:
1694 enc = "AESCCM8(256)";
1696 case SSL_CAMELLIA128:
1697 enc = "Camellia(128)";
1699 case SSL_CAMELLIA256:
1700 enc = "Camellia(256)";
1705 case SSL_eGOST2814789CNT:
1706 case SSL_eGOST2814789CNT12:
1707 enc = "GOST89(256)";
1709 case SSL_CHACHA20POLY1305:
1710 enc = "CHACHA20/POLY1305(256)";
1734 case SSL_GOST89MAC12:
1740 case SSL_GOST12_256:
1741 case SSL_GOST12_512:
1749 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac);
1754 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1760 alg_ssl = c->algorithm_ssl;
1762 if (alg_ssl & SSL_SSLV3)
1764 if (alg_ssl & SSL_TLSV1)
1766 if (alg_ssl & SSL_TLSV1_2)
1771 /* return the actual cipher being used */
1772 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1779 /* number of bits for symmetric cipher */
1780 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1785 if (alg_bits != NULL)
1786 *alg_bits = (int) c->alg_bits;
1787 ret = (int) c->strength_bits;
1792 uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c)
1797 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1802 if ((n == 0) || (sk == NULL))
1804 nn = sk_SSL_COMP_num(sk);
1805 for (i = 0; i < nn; i++) {
1806 ctmp = sk_SSL_COMP_value(sk, i);
1813 #ifdef OPENSSL_NO_COMP
1814 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1818 STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
1823 void SSL_COMP_free_compression_methods(void)
1826 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1832 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1834 load_builtin_compressions();
1835 return (ssl_comp_methods);
1838 STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
1841 STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods;
1842 ssl_comp_methods = meths;
1846 static void cmeth_free(SSL_COMP *cm)
1851 void SSL_COMP_free_compression_methods(void)
1853 STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods;
1854 ssl_comp_methods = NULL;
1855 sk_SSL_COMP_pop_free(old_meths, cmeth_free);
1858 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1862 if (cm == NULL || COMP_get_type(cm) == NID_undef)
1866 * According to draft-ietf-tls-compression-04.txt, the
1867 * compression number ranges should be the following:
1869 * 0 to 63: methods defined by the IETF
1870 * 64 to 192: external party methods assigned by IANA
1871 * 193 to 255: reserved for private use
1873 if (id < 193 || id > 255) {
1874 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1875 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1879 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
1880 comp = OPENSSL_malloc(sizeof(*comp));
1882 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
1883 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE);
1889 load_builtin_compressions();
1890 if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) {
1892 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
1893 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1894 SSL_R_DUPLICATE_COMPRESSION_ID);
1897 if ((ssl_comp_methods == NULL)
1898 || !sk_SSL_COMP_push(ssl_comp_methods, comp)) {
1900 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
1901 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE);
1904 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
1909 const char *SSL_COMP_get_name(const COMP_METHOD *comp)
1911 #ifndef OPENSSL_NO_COMP
1912 return comp ? COMP_get_name(comp) : NULL;
1918 /* For a cipher return the index corresponding to the certificate type */
1919 int ssl_cipher_get_cert_index(const SSL_CIPHER *c)
1923 alg_a = c->algorithm_auth;
1925 if (alg_a & SSL_aECDSA)
1926 return SSL_PKEY_ECC;
1927 else if (alg_a & SSL_aDSS)
1928 return SSL_PKEY_DSA_SIGN;
1929 else if (alg_a & SSL_aRSA)
1930 return SSL_PKEY_RSA_ENC;
1931 else if (alg_a & SSL_aGOST12)
1932 return SSL_PKEY_GOST_EC;
1933 else if (alg_a & SSL_aGOST01)
1934 return SSL_PKEY_GOST01;
1939 const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr)
1941 const SSL_CIPHER *c;
1942 c = ssl->method->get_cipher_by_char(ptr);
1943 if (c == NULL || c->valid == 0)
1948 const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr)
1950 return ssl->method->get_cipher_by_char(ptr);
1953 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c)
1958 i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc);
1961 return ssl_cipher_table_cipher[i].nid;
1964 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c)
1969 i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac);
1972 return ssl_cipher_table_mac[i].nid;