2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
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).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
116 /* ====================================================================
117 * Copyright 2005 Nokia. All rights reserved.
119 * The portions of the attached software ("Contribution") is developed by
120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
125 * support (see RFC 4279) to OpenSSL.
127 * No patent licenses or other rights except those expressly stated in
128 * the OpenSSL open source license shall be deemed granted or received
129 * expressly, by implication, estoppel, or otherwise.
131 * No assurances are provided by Nokia that the Contribution does not
132 * infringe the patent or other intellectual property rights of any third
133 * party or that the license provides you with all the necessary rights
134 * to make use of the Contribution.
136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
144 #include <openssl/objects.h>
145 #ifndef OPENSSL_NO_COMP
146 # include <openssl/comp.h>
148 #ifndef OPENSSL_NO_ENGINE
149 # include <openssl/engine.h>
151 #include "ssl_locl.h"
153 #define SSL_ENC_DES_IDX 0
154 #define SSL_ENC_3DES_IDX 1
155 #define SSL_ENC_RC4_IDX 2
156 #define SSL_ENC_RC2_IDX 3
157 #define SSL_ENC_IDEA_IDX 4
158 #define SSL_ENC_NULL_IDX 5
159 #define SSL_ENC_AES128_IDX 6
160 #define SSL_ENC_AES256_IDX 7
161 #define SSL_ENC_CAMELLIA128_IDX 8
162 #define SSL_ENC_CAMELLIA256_IDX 9
163 #define SSL_ENC_GOST89_IDX 10
164 #define SSL_ENC_SEED_IDX 11
165 #define SSL_ENC_AES128GCM_IDX 12
166 #define SSL_ENC_AES256GCM_IDX 13
167 #define SSL_ENC_AES128CCM_IDX 14
168 #define SSL_ENC_AES256CCM_IDX 15
169 #define SSL_ENC_AES128CCM8_IDX 16
170 #define SSL_ENC_AES256CCM8_IDX 17
171 #define SSL_ENC_GOST8912_IDX 18
172 #define SSL_ENC_CHACHA_IDX 19
173 #define SSL_ENC_NUM_IDX 20
175 /* NB: make sure indices in these tables match values above */
182 /* Table of NIDs for each cipher */
183 static const ssl_cipher_table ssl_cipher_table_cipher[SSL_ENC_NUM_IDX] = {
184 {SSL_DES, NID_des_cbc}, /* SSL_ENC_DES_IDX 0 */
185 {SSL_3DES, NID_des_ede3_cbc}, /* SSL_ENC_3DES_IDX 1 */
186 {SSL_RC4, NID_rc4}, /* SSL_ENC_RC4_IDX 2 */
187 {SSL_RC2, NID_rc2_cbc}, /* SSL_ENC_RC2_IDX 3 */
188 {SSL_IDEA, NID_idea_cbc}, /* SSL_ENC_IDEA_IDX 4 */
189 {SSL_eNULL, NID_undef}, /* SSL_ENC_NULL_IDX 5 */
190 {SSL_AES128, NID_aes_128_cbc}, /* SSL_ENC_AES128_IDX 6 */
191 {SSL_AES256, NID_aes_256_cbc}, /* SSL_ENC_AES256_IDX 7 */
192 {SSL_CAMELLIA128, NID_camellia_128_cbc}, /* SSL_ENC_CAMELLIA128_IDX 8 */
193 {SSL_CAMELLIA256, NID_camellia_256_cbc}, /* SSL_ENC_CAMELLIA256_IDX 9 */
194 {SSL_eGOST2814789CNT, NID_gost89_cnt}, /* SSL_ENC_GOST89_IDX 10 */
195 {SSL_SEED, NID_seed_cbc}, /* SSL_ENC_SEED_IDX 11 */
196 {SSL_AES128GCM, NID_aes_128_gcm}, /* SSL_ENC_AES128GCM_IDX 12 */
197 {SSL_AES256GCM, NID_aes_256_gcm}, /* SSL_ENC_AES256GCM_IDX 13 */
198 {SSL_AES128CCM, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM_IDX 14 */
199 {SSL_AES256CCM, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM_IDX 15 */
200 {SSL_AES128CCM8, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM8_IDX 16 */
201 {SSL_AES256CCM8, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM8_IDX 17 */
202 {SSL_eGOST2814789CNT12, NID_gost89_cnt_12}, /* SSL_ENC_GOST8912_IDX */
203 {SSL_CHACHA20POLY1305, NID_chacha20_poly1305},
206 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX] = {
207 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
211 #define SSL_COMP_NULL_IDX 0
212 #define SSL_COMP_ZLIB_IDX 1
213 #define SSL_COMP_NUM_IDX 2
215 static STACK_OF(SSL_COMP) *ssl_comp_methods = NULL;
218 * Constant SSL_MAX_DIGEST equal to size of digests array should be defined
222 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
224 /* NB: make sure indices in this table matches values above */
225 static const ssl_cipher_table ssl_cipher_table_mac[SSL_MD_NUM_IDX] = {
226 {SSL_MD5, NID_md5}, /* SSL_MD_MD5_IDX 0 */
227 {SSL_SHA1, NID_sha1}, /* SSL_MD_SHA1_IDX 1 */
228 {SSL_GOST94, NID_id_GostR3411_94}, /* SSL_MD_GOST94_IDX 2 */
229 {SSL_GOST89MAC, NID_id_Gost28147_89_MAC}, /* SSL_MD_GOST89MAC_IDX 3 */
230 {SSL_SHA256, NID_sha256}, /* SSL_MD_SHA256_IDX 4 */
231 {SSL_SHA384, NID_sha384}, /* SSL_MD_SHA384_IDX 5 */
232 {SSL_GOST12_256, NID_id_GostR3411_2012_256}, /* SSL_MD_GOST12_256_IDX 6 */
233 {SSL_GOST89MAC12, NID_gost_mac_12}, /* SSL_MD_GOST89MAC12_IDX 7 */
234 {SSL_GOST12_512, NID_id_GostR3411_2012_512}, /* SSL_MD_GOST12_512_IDX 8 */
235 {0, NID_md5_sha1}, /* SSL_MD_MD5_SHA1_IDX 9 */
236 {0, NID_sha224}, /* SSL_MD_SHA224_IDX 10 */
237 {0, NID_sha512} /* SSL_MD_SHA512_IDX 11 */
240 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX] = {
241 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
244 /* Utility function for table lookup */
245 static int ssl_cipher_info_find(const ssl_cipher_table * table,
246 size_t table_cnt, uint32_t mask)
249 for (i = 0; i < table_cnt; i++, table++) {
250 if (table->mask == mask)
256 #define ssl_cipher_info_lookup(table, x) \
257 ssl_cipher_info_find(table, OSSL_NELEM(table), x)
260 * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation
261 * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is
264 static int ssl_mac_pkey_id[SSL_MD_NUM_IDX] = {
265 /* MD5, SHA, GOST94, MAC89 */
266 EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef,
267 /* SHA256, SHA384, GOST2012_256, MAC89-12 */
268 EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef,
273 static int ssl_mac_secret_size[SSL_MD_NUM_IDX] = {
274 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
278 #define CIPHER_KILL 2
281 #define CIPHER_SPECIAL 5
283 typedef struct cipher_order_st {
284 const SSL_CIPHER *cipher;
287 struct cipher_order_st *next, *prev;
290 static const SSL_CIPHER cipher_aliases[] = {
291 /* "ALL" doesn't include eNULL (must be specifically enabled) */
292 {0, SSL_TXT_ALL, 0, 0, 0, ~SSL_eNULL, 0, 0, 0, 0, 0, 0},
293 /* "COMPLEMENTOFALL" */
294 {0, SSL_TXT_CMPALL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
297 * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in
300 {0, SSL_TXT_CMPDEF, 0, 0, 0, ~SSL_eNULL, 0, 0, SSL_NOT_DEFAULT, 0, 0, 0},
303 * key exchange aliases (some of those using only a single bit here
304 * combine multiple key exchange algs according to the RFCs, e.g. kDHE
305 * combines DHE_DSS and DHE_RSA)
307 {0, SSL_TXT_kRSA, 0, SSL_kRSA, 0, 0, 0, 0, 0, 0, 0, 0},
309 {0, SSL_TXT_kDHr, 0, SSL_kDHr, 0, 0, 0, 0, 0, 0, 0, 0},
310 {0, SSL_TXT_kDHd, 0, SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0},
311 {0, SSL_TXT_kDH, 0, SSL_kDHr | SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0},
312 {0, SSL_TXT_kEDH, 0, SSL_kDHE, 0, 0, 0, 0, 0, 0, 0, 0},
313 {0, SSL_TXT_kDHE, 0, SSL_kDHE, 0, 0, 0, 0, 0, 0, 0, 0},
314 {0, SSL_TXT_DH, 0, SSL_kDHr | SSL_kDHd | SSL_kDHE, 0, 0, 0, 0, 0, 0, 0,
317 {0, SSL_TXT_kECDHr, 0, SSL_kECDHr, 0, 0, 0, 0, 0, 0, 0, 0},
318 {0, SSL_TXT_kECDHe, 0, SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0},
319 {0, SSL_TXT_kECDH, 0, SSL_kECDHr | SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0},
320 {0, SSL_TXT_kEECDH, 0, SSL_kECDHE, 0, 0, 0, 0, 0, 0, 0, 0},
321 {0, SSL_TXT_kECDHE, 0, SSL_kECDHE, 0, 0, 0, 0, 0, 0, 0, 0},
322 {0, SSL_TXT_ECDH, 0, SSL_kECDHr | SSL_kECDHe | SSL_kECDHE, 0, 0, 0, 0, 0,
325 {0, SSL_TXT_kPSK, 0, SSL_kPSK, 0, 0, 0, 0, 0, 0, 0, 0},
326 {0, SSL_TXT_kRSAPSK, 0, SSL_kRSAPSK, 0, 0, 0, 0, 0, 0, 0, 0},
327 {0, SSL_TXT_kECDHEPSK, 0, SSL_kECDHEPSK, 0, 0, 0, 0, 0, 0, 0, 0},
328 {0, SSL_TXT_kDHEPSK, 0, SSL_kDHEPSK, 0, 0, 0, 0, 0, 0, 0, 0},
329 {0, SSL_TXT_kSRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
330 {0, SSL_TXT_kGOST, 0, SSL_kGOST, 0, 0, 0, 0, 0, 0, 0, 0},
332 /* server authentication aliases */
333 {0, SSL_TXT_aRSA, 0, 0, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
334 {0, SSL_TXT_aDSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
335 {0, SSL_TXT_DSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
336 {0, SSL_TXT_aNULL, 0, 0, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
337 /* no such ciphersuites supported! */
338 {0, SSL_TXT_aDH, 0, 0, SSL_aDH, 0, 0, 0, 0, 0, 0, 0},
339 {0, SSL_TXT_aECDH, 0, 0, SSL_aECDH, 0, 0, 0, 0, 0, 0, 0},
340 {0, SSL_TXT_aECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
341 {0, SSL_TXT_ECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
342 {0, SSL_TXT_aPSK, 0, 0, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0},
343 {0, SSL_TXT_aGOST01, 0, 0, SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0},
344 {0, SSL_TXT_aGOST12, 0, 0, SSL_aGOST12, 0, 0, 0, 0, 0, 0, 0},
345 {0, SSL_TXT_aGOST, 0, 0, SSL_aGOST01 | SSL_aGOST12, 0, 0, 0,
347 {0, SSL_TXT_aSRP, 0, 0, SSL_aSRP, 0, 0, 0, 0, 0, 0, 0},
349 /* aliases combining key exchange and server authentication */
350 {0, SSL_TXT_EDH, 0, SSL_kDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
351 {0, SSL_TXT_DHE, 0, SSL_kDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
352 {0, SSL_TXT_EECDH, 0, SSL_kECDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
353 {0, SSL_TXT_ECDHE, 0, SSL_kECDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
354 {0, SSL_TXT_NULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
355 {0, SSL_TXT_RSA, 0, SSL_kRSA, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
356 {0, SSL_TXT_ADH, 0, SSL_kDHE, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
357 {0, SSL_TXT_AECDH, 0, SSL_kECDHE, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
358 {0, SSL_TXT_PSK, 0, SSL_PSK, 0, 0, 0, 0, 0, 0, 0, 0},
359 {0, SSL_TXT_SRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
361 /* symmetric encryption aliases */
362 {0, SSL_TXT_DES, 0, 0, 0, SSL_DES, 0, 0, 0, 0, 0, 0},
363 {0, SSL_TXT_3DES, 0, 0, 0, SSL_3DES, 0, 0, 0, 0, 0, 0},
364 {0, SSL_TXT_RC4, 0, 0, 0, SSL_RC4, 0, 0, 0, 0, 0, 0},
365 {0, SSL_TXT_RC2, 0, 0, 0, SSL_RC2, 0, 0, 0, 0, 0, 0},
366 {0, SSL_TXT_IDEA, 0, 0, 0, SSL_IDEA, 0, 0, 0, 0, 0, 0},
367 {0, SSL_TXT_SEED, 0, 0, 0, SSL_SEED, 0, 0, 0, 0, 0, 0},
368 {0, SSL_TXT_eNULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
369 {0, SSL_TXT_GOST, 0, 0, 0, SSL_eGOST2814789CNT | SSL_eGOST2814789CNT12, 0,
371 {0, SSL_TXT_AES128, 0, 0, 0, SSL_AES128 | SSL_AES128GCM | SSL_AES128CCM | SSL_AES128CCM8, 0,
373 {0, SSL_TXT_AES256, 0, 0, 0, SSL_AES256 | SSL_AES256GCM | SSL_AES256CCM | SSL_AES256CCM8, 0,
375 {0, SSL_TXT_AES, 0, 0, 0, SSL_AES, 0, 0, 0, 0, 0, 0},
376 {0, SSL_TXT_AES_GCM, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM, 0, 0, 0, 0,
378 {0, SSL_TXT_AES_CCM, 0, 0, 0, SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8, 0, 0, 0, 0,
380 {0, SSL_TXT_AES_CCM_8, 0, 0, 0, SSL_AES128CCM8 | SSL_AES256CCM8, 0, 0, 0, 0,
382 {0, SSL_TXT_CAMELLIA128, 0, 0, 0, SSL_CAMELLIA128, 0, 0, 0, 0, 0, 0},
383 {0, SSL_TXT_CAMELLIA256, 0, 0, 0, SSL_CAMELLIA256, 0, 0, 0, 0, 0, 0},
384 {0, SSL_TXT_CAMELLIA, 0, 0, 0, SSL_CAMELLIA128 | SSL_CAMELLIA256, 0, 0, 0,
388 {0, SSL_TXT_MD5, 0, 0, 0, 0, SSL_MD5, 0, 0, 0, 0, 0},
389 {0, SSL_TXT_SHA1, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
390 {0, SSL_TXT_SHA, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
391 {0, SSL_TXT_GOST94, 0, 0, 0, 0, SSL_GOST94, 0, 0, 0, 0, 0},
392 {0, SSL_TXT_GOST89MAC, 0, 0, 0, 0, SSL_GOST89MAC | SSL_GOST89MAC12, 0, 0,
394 {0, SSL_TXT_SHA256, 0, 0, 0, 0, SSL_SHA256, 0, 0, 0, 0, 0},
395 {0, SSL_TXT_SHA384, 0, 0, 0, 0, SSL_SHA384, 0, 0, 0, 0, 0},
396 {0, SSL_TXT_GOST12, 0, 0, 0, 0, SSL_GOST12_256, 0, 0, 0, 0, 0},
398 /* protocol version aliases */
399 {0, SSL_TXT_SSLV3, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0},
400 {0, SSL_TXT_TLSV1, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0},
401 {0, "TLSv1.0", 0, 0, 0, 0, 0, SSL_TLSV1, 0, 0, 0, 0},
402 {0, SSL_TXT_TLSV1_2, 0, 0, 0, 0, 0, SSL_TLSV1_2, 0, 0, 0, 0},
404 /* strength classes */
405 {0, SSL_TXT_LOW, 0, 0, 0, 0, 0, 0, SSL_LOW, 0, 0, 0},
406 {0, SSL_TXT_MEDIUM, 0, 0, 0, 0, 0, 0, SSL_MEDIUM, 0, 0, 0},
407 {0, SSL_TXT_HIGH, 0, 0, 0, 0, 0, 0, SSL_HIGH, 0, 0, 0},
408 /* FIPS 140-2 approved ciphersuite */
409 {0, SSL_TXT_FIPS, 0, 0, 0, ~SSL_eNULL, 0, 0, SSL_FIPS, 0, 0, 0},
411 /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */
412 {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA, 0,
413 SSL_kDHE, SSL_aDSS, SSL_3DES, SSL_SHA1, SSL_SSLV3,
414 SSL_HIGH | SSL_FIPS, 0, 0, 0,},
415 {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA, 0,
416 SSL_kDHE, SSL_aRSA, SSL_3DES, SSL_SHA1, SSL_SSLV3,
417 SSL_HIGH | SSL_FIPS, 0, 0, 0,},
422 * Search for public key algorithm with given name and return its pkey_id if
423 * it is available. Otherwise return 0
425 #ifdef OPENSSL_NO_ENGINE
427 static int get_optional_pkey_id(const char *pkey_name)
429 const EVP_PKEY_ASN1_METHOD *ameth;
431 ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1);
432 if (ameth && EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL,
441 static int get_optional_pkey_id(const char *pkey_name)
443 const EVP_PKEY_ASN1_METHOD *ameth;
444 ENGINE *tmpeng = NULL;
446 ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1);
448 if (EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL,
453 ENGINE_finish(tmpeng);
459 /* masks of disabled algorithms */
460 static uint32_t disabled_enc_mask;
461 static uint32_t disabled_mac_mask;
462 static uint32_t disabled_mkey_mask;
463 static uint32_t disabled_auth_mask;
465 void ssl_load_ciphers(void)
468 const ssl_cipher_table *t;
469 disabled_enc_mask = 0;
470 for (i = 0, t = ssl_cipher_table_cipher; i < SSL_ENC_NUM_IDX; i++, t++) {
471 if (t->nid == NID_undef) {
472 ssl_cipher_methods[i] = NULL;
474 const EVP_CIPHER *cipher = EVP_get_cipherbynid(t->nid);
475 ssl_cipher_methods[i] = cipher;
477 disabled_enc_mask |= t->mask;
480 #ifdef SSL_FORBID_ENULL
481 disabled_enc_mask |= SSL_eNULL;
483 disabled_mac_mask = 0;
484 for (i = 0, t = ssl_cipher_table_mac; i < SSL_MD_NUM_IDX; i++, t++) {
485 const EVP_MD *md = EVP_get_digestbynid(t->nid);
486 ssl_digest_methods[i] = md;
488 disabled_mac_mask |= t->mask;
490 ssl_mac_secret_size[i] = EVP_MD_size(md);
491 OPENSSL_assert(ssl_mac_secret_size[i] >= 0);
494 /* Make sure we can access MD5 and SHA1 */
495 OPENSSL_assert(ssl_digest_methods[SSL_MD_MD5_IDX] != NULL);
496 OPENSSL_assert(ssl_digest_methods[SSL_MD_SHA1_IDX] != NULL);
498 disabled_mkey_mask = 0;
499 disabled_auth_mask = 0;
501 #ifdef OPENSSL_NO_RSA
502 disabled_mkey_mask |= SSL_kRSA | SSL_kRSAPSK;
503 disabled_auth_mask |= SSL_aRSA;
505 #ifdef OPENSSL_NO_DSA
506 disabled_auth_mask |= SSL_aDSS;
509 disabled_mkey_mask |= SSL_kDHr | SSL_kDHd | SSL_kDHE | SSL_kDHEPSK;
510 disabled_auth_mask |= SSL_aDH;
513 disabled_mkey_mask |= SSL_kECDHe | SSL_kECDHr | SSL_kECDHEPSK;
514 disabled_auth_mask |= SSL_aECDSA | SSL_aECDH;
516 #ifdef OPENSSL_NO_PSK
517 disabled_mkey_mask |= SSL_PSK;
518 disabled_auth_mask |= SSL_aPSK;
520 #ifdef OPENSSL_NO_SRP
521 disabled_mkey_mask |= SSL_kSRP;
525 * Check for presence of GOST 34.10 algorithms, and if they are not
526 * present, disable appropriate auth and key exchange
528 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac");
529 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) {
530 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32;
532 disabled_mac_mask |= SSL_GOST89MAC;
535 ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX] = get_optional_pkey_id("gost-mac-12");
536 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX]) {
537 ssl_mac_secret_size[SSL_MD_GOST89MAC12_IDX] = 32;
539 disabled_mac_mask |= SSL_GOST89MAC12;
542 if (!get_optional_pkey_id("gost2001"))
543 disabled_auth_mask |= SSL_aGOST01 | SSL_aGOST12;
544 if (!get_optional_pkey_id("gost2012_256"))
545 disabled_auth_mask |= SSL_aGOST12;
546 if (!get_optional_pkey_id("gost2012_512"))
547 disabled_auth_mask |= SSL_aGOST12;
549 * Disable GOST key exchange if no GOST signature algs are available *
551 if ((disabled_auth_mask & (SSL_aGOST01 | SSL_aGOST12)) == (SSL_aGOST01 | SSL_aGOST12))
552 disabled_mkey_mask |= SSL_kGOST;
555 #ifndef OPENSSL_NO_COMP
557 static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b)
559 return ((*a)->id - (*b)->id);
562 static void load_builtin_compressions(void)
564 int got_write_lock = 0;
566 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
567 if (ssl_comp_methods == NULL) {
568 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
569 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
572 if (ssl_comp_methods == NULL) {
573 SSL_COMP *comp = NULL;
574 COMP_METHOD *method = COMP_zlib();
577 ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp);
578 if (COMP_get_type(method) != NID_undef
579 && ssl_comp_methods != NULL) {
580 comp = OPENSSL_malloc(sizeof(*comp));
582 comp->method = method;
583 comp->id = SSL_COMP_ZLIB_IDX;
584 comp->name = COMP_get_name(method);
585 sk_SSL_COMP_push(ssl_comp_methods, comp);
586 sk_SSL_COMP_sort(ssl_comp_methods);
594 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
596 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
600 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
601 const EVP_MD **md, int *mac_pkey_type,
602 int *mac_secret_size, SSL_COMP **comp, int use_etm)
612 #ifndef OPENSSL_NO_COMP
613 load_builtin_compressions();
617 ctmp.id = s->compress_meth;
618 if (ssl_comp_methods != NULL) {
619 i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp);
621 *comp = sk_SSL_COMP_value(ssl_comp_methods, i);
625 /* If were only interested in comp then return success */
626 if ((enc == NULL) && (md == NULL))
630 if ((enc == NULL) || (md == NULL))
633 i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc);
638 if (i == SSL_ENC_NULL_IDX)
639 *enc = EVP_enc_null();
641 *enc = ssl_cipher_methods[i];
644 i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac);
647 if (mac_pkey_type != NULL)
648 *mac_pkey_type = NID_undef;
649 if (mac_secret_size != NULL)
650 *mac_secret_size = 0;
651 if (c->algorithm_mac == SSL_AEAD)
652 mac_pkey_type = NULL;
654 *md = ssl_digest_methods[i];
655 if (mac_pkey_type != NULL)
656 *mac_pkey_type = ssl_mac_pkey_id[i];
657 if (mac_secret_size != NULL)
658 *mac_secret_size = ssl_mac_secret_size[i];
661 if ((*enc != NULL) &&
662 (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER))
663 && (!mac_pkey_type || *mac_pkey_type != NID_undef)) {
664 const EVP_CIPHER *evp;
669 if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR ||
670 s->ssl_version < TLS1_VERSION)
676 if (c->algorithm_enc == SSL_RC4 &&
677 c->algorithm_mac == SSL_MD5 &&
678 (evp = EVP_get_cipherbyname("RC4-HMAC-MD5")))
679 *enc = evp, *md = NULL;
680 else if (c->algorithm_enc == SSL_AES128 &&
681 c->algorithm_mac == SSL_SHA1 &&
682 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
683 *enc = evp, *md = NULL;
684 else if (c->algorithm_enc == SSL_AES256 &&
685 c->algorithm_mac == SSL_SHA1 &&
686 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
687 *enc = evp, *md = NULL;
688 else if (c->algorithm_enc == SSL_AES128 &&
689 c->algorithm_mac == SSL_SHA256 &&
690 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA256")))
691 *enc = evp, *md = NULL;
692 else if (c->algorithm_enc == SSL_AES256 &&
693 c->algorithm_mac == SSL_SHA256 &&
694 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA256")))
695 *enc = evp, *md = NULL;
701 const EVP_MD *ssl_md(int idx)
703 idx &= SSL_HANDSHAKE_MAC_MASK;
704 if (idx < 0 || idx >= SSL_MD_NUM_IDX)
706 return ssl_digest_methods[idx];
709 const EVP_MD *ssl_handshake_md(SSL *s)
711 return ssl_md(ssl_get_algorithm2(s));
714 const EVP_MD *ssl_prf_md(SSL *s)
716 return ssl_md(ssl_get_algorithm2(s) >> TLS1_PRF_DGST_SHIFT);
719 #define ITEM_SEP(a) \
720 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
722 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
729 if (curr->prev != NULL)
730 curr->prev->next = curr->next;
731 if (curr->next != NULL)
732 curr->next->prev = curr->prev;
733 (*tail)->next = curr;
739 static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
746 if (curr->next != NULL)
747 curr->next->prev = curr->prev;
748 if (curr->prev != NULL)
749 curr->prev->next = curr->next;
750 (*head)->prev = curr;
756 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
758 uint32_t disabled_mkey,
759 uint32_t disabled_auth,
760 uint32_t disabled_enc,
761 uint32_t disabled_mac,
762 uint32_t disabled_ssl,
763 CIPHER_ORDER *co_list,
764 CIPHER_ORDER **head_p,
765 CIPHER_ORDER **tail_p)
771 * We have num_of_ciphers descriptions compiled in, depending on the
772 * method selected (SSLv3, TLSv1 etc).
773 * These will later be sorted in a linked list with at most num
777 /* Get the initial list of ciphers */
778 co_list_num = 0; /* actual count of ciphers */
779 for (i = 0; i < num_of_ciphers; i++) {
780 c = ssl_method->get_cipher(i);
781 /* drop those that use any of that is not available */
782 if ((c != NULL) && c->valid &&
783 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) &&
784 !(c->algorithm_mkey & disabled_mkey) &&
785 !(c->algorithm_auth & disabled_auth) &&
786 !(c->algorithm_enc & disabled_enc) &&
787 !(c->algorithm_mac & disabled_mac) &&
788 !(c->algorithm_ssl & disabled_ssl)) {
789 co_list[co_list_num].cipher = c;
790 co_list[co_list_num].next = NULL;
791 co_list[co_list_num].prev = NULL;
792 co_list[co_list_num].active = 0;
795 * if (!sk_push(ca_list,(char *)c)) goto err;
801 * Prepare linked list from list entries
803 if (co_list_num > 0) {
804 co_list[0].prev = NULL;
806 if (co_list_num > 1) {
807 co_list[0].next = &co_list[1];
809 for (i = 1; i < co_list_num - 1; i++) {
810 co_list[i].prev = &co_list[i - 1];
811 co_list[i].next = &co_list[i + 1];
814 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
817 co_list[co_list_num - 1].next = NULL;
819 *head_p = &co_list[0];
820 *tail_p = &co_list[co_list_num - 1];
824 static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list,
825 int num_of_group_aliases,
826 uint32_t disabled_mkey,
827 uint32_t disabled_auth,
828 uint32_t disabled_enc,
829 uint32_t disabled_mac,
830 uint32_t disabled_ssl,
833 CIPHER_ORDER *ciph_curr;
834 const SSL_CIPHER **ca_curr;
836 uint32_t mask_mkey = ~disabled_mkey;
837 uint32_t mask_auth = ~disabled_auth;
838 uint32_t mask_enc = ~disabled_enc;
839 uint32_t mask_mac = ~disabled_mac;
840 uint32_t mask_ssl = ~disabled_ssl;
843 * First, add the real ciphers as already collected
847 while (ciph_curr != NULL) {
848 *ca_curr = ciph_curr->cipher;
850 ciph_curr = ciph_curr->next;
854 * Now we add the available ones from the cipher_aliases[] table.
855 * They represent either one or more algorithms, some of which
856 * in any affected category must be supported (set in enabled_mask),
857 * or represent a cipher strength value (will be added in any case because algorithms=0).
859 for (i = 0; i < num_of_group_aliases; i++) {
860 uint32_t algorithm_mkey = cipher_aliases[i].algorithm_mkey;
861 uint32_t algorithm_auth = cipher_aliases[i].algorithm_auth;
862 uint32_t algorithm_enc = cipher_aliases[i].algorithm_enc;
863 uint32_t algorithm_mac = cipher_aliases[i].algorithm_mac;
864 uint32_t algorithm_ssl = cipher_aliases[i].algorithm_ssl;
867 if ((algorithm_mkey & mask_mkey) == 0)
871 if ((algorithm_auth & mask_auth) == 0)
875 if ((algorithm_enc & mask_enc) == 0)
879 if ((algorithm_mac & mask_mac) == 0)
883 if ((algorithm_ssl & mask_ssl) == 0)
886 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
890 *ca_curr = NULL; /* end of list */
893 static void ssl_cipher_apply_rule(uint32_t cipher_id, uint32_t alg_mkey,
894 uint32_t alg_auth, uint32_t alg_enc,
895 uint32_t alg_mac, uint32_t alg_ssl,
896 uint32_t algo_strength, int rule,
897 int32_t strength_bits, CIPHER_ORDER **head_p,
898 CIPHER_ORDER **tail_p)
900 CIPHER_ORDER *head, *tail, *curr, *next, *last;
901 const SSL_CIPHER *cp;
906 "Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
907 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl,
908 algo_strength, strength_bits);
911 if (rule == CIPHER_DEL)
912 reverse = 1; /* needed to maintain sorting between
913 * currently deleted ciphers */
936 next = reverse ? curr->prev : curr->next;
941 * Selection criteria is either the value of strength_bits
942 * or the algorithms used.
944 if (strength_bits >= 0) {
945 if (strength_bits != cp->strength_bits)
950 "\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n",
951 cp->name, cp->algorithm_mkey, cp->algorithm_auth,
952 cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl,
955 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
956 if (cipher_id && cipher_id != cp->id)
959 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
961 if (alg_auth && !(alg_auth & cp->algorithm_auth))
963 if (alg_enc && !(alg_enc & cp->algorithm_enc))
965 if (alg_mac && !(alg_mac & cp->algorithm_mac))
967 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
969 if (algo_strength && !(algo_strength & cp->algo_strength))
971 if ((algo_strength & SSL_DEFAULT_MASK)
972 && !(algo_strength & SSL_DEFAULT_MASK & cp->algo_strength))
977 fprintf(stderr, "Action = %d\n", rule);
980 /* add the cipher if it has not been added yet. */
981 if (rule == CIPHER_ADD) {
984 ll_append_tail(&head, curr, &tail);
988 /* Move the added cipher to this location */
989 else if (rule == CIPHER_ORD) {
992 ll_append_tail(&head, curr, &tail);
994 } else if (rule == CIPHER_DEL) {
998 * most recently deleted ciphersuites get best positions for
999 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
1000 * in reverse to maintain the order)
1002 ll_append_head(&head, curr, &tail);
1005 } else if (rule == CIPHER_KILL) {
1010 curr->prev->next = curr->next;
1014 if (curr->next != NULL)
1015 curr->next->prev = curr->prev;
1016 if (curr->prev != NULL)
1017 curr->prev->next = curr->next;
1027 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
1028 CIPHER_ORDER **tail_p)
1030 int32_t max_strength_bits;
1031 int i, *number_uses;
1035 * This routine sorts the ciphers with descending strength. The sorting
1036 * must keep the pre-sorted sequence, so we apply the normal sorting
1037 * routine as '+' movement to the end of the list.
1039 max_strength_bits = 0;
1041 while (curr != NULL) {
1042 if (curr->active && (curr->cipher->strength_bits > max_strength_bits))
1043 max_strength_bits = curr->cipher->strength_bits;
1047 number_uses = OPENSSL_zalloc(sizeof(int) * (max_strength_bits + 1));
1048 if (number_uses == NULL) {
1049 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE);
1054 * Now find the strength_bits values actually used
1057 while (curr != NULL) {
1059 number_uses[curr->cipher->strength_bits]++;
1063 * Go through the list of used strength_bits values in descending
1066 for (i = max_strength_bits; i >= 0; i--)
1067 if (number_uses[i] > 0)
1068 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p,
1071 OPENSSL_free(number_uses);
1075 static int ssl_cipher_process_rulestr(const char *rule_str,
1076 CIPHER_ORDER **head_p,
1077 CIPHER_ORDER **tail_p,
1078 const SSL_CIPHER **ca_list, CERT *c)
1080 uint32_t alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength;
1081 const char *l, *buf;
1082 int j, multi, found, rule, retval, ok, buflen;
1083 uint32_t cipher_id = 0;
1096 } else if (ch == '+') {
1099 } else if (ch == '!') {
1102 } else if (ch == '@') {
1103 rule = CIPHER_SPECIAL;
1125 #ifndef CHARSET_EBCDIC
1126 while (((ch >= 'A') && (ch <= 'Z')) ||
1127 ((ch >= '0') && (ch <= '9')) ||
1128 ((ch >= 'a') && (ch <= 'z')) ||
1129 (ch == '-') || (ch == '.') || (ch == '='))
1131 while (isalnum(ch) || (ch == '-') || (ch == '.') || (ch == '='))
1140 * We hit something we cannot deal with,
1141 * it is no command or separator nor
1142 * alphanumeric, so we call this an error.
1144 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1145 SSL_R_INVALID_COMMAND);
1151 if (rule == CIPHER_SPECIAL) {
1152 found = 0; /* unused -- avoid compiler warning */
1153 break; /* special treatment */
1156 /* check for multi-part specification */
1164 * Now search for the cipher alias in the ca_list. Be careful
1165 * with the strncmp, because the "buflen" limitation
1166 * will make the rule "ADH:SOME" and the cipher
1167 * "ADH-MY-CIPHER" look like a match for buflen=3.
1168 * So additionally check whether the cipher name found
1169 * has the correct length. We can save a strlen() call:
1170 * just checking for the '\0' at the right place is
1171 * sufficient, we have to strncmp() anyway. (We cannot
1172 * use strcmp(), because buf is not '\0' terminated.)
1176 while (ca_list[j]) {
1177 if (strncmp(buf, ca_list[j]->name, buflen) == 0
1178 && (ca_list[j]->name[buflen] == '\0')) {
1186 break; /* ignore this entry */
1188 if (ca_list[j]->algorithm_mkey) {
1190 alg_mkey &= ca_list[j]->algorithm_mkey;
1196 alg_mkey = ca_list[j]->algorithm_mkey;
1199 if (ca_list[j]->algorithm_auth) {
1201 alg_auth &= ca_list[j]->algorithm_auth;
1207 alg_auth = ca_list[j]->algorithm_auth;
1210 if (ca_list[j]->algorithm_enc) {
1212 alg_enc &= ca_list[j]->algorithm_enc;
1218 alg_enc = ca_list[j]->algorithm_enc;
1221 if (ca_list[j]->algorithm_mac) {
1223 alg_mac &= ca_list[j]->algorithm_mac;
1229 alg_mac = ca_list[j]->algorithm_mac;
1232 if (ca_list[j]->algo_strength) {
1233 if (algo_strength) {
1234 algo_strength &= ca_list[j]->algo_strength;
1235 if (!algo_strength) {
1240 algo_strength = ca_list[j]->algo_strength;
1243 if (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) {
1244 if (algo_strength & SSL_DEFAULT_MASK) {
1246 (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) |
1248 if (!(algo_strength & SSL_DEFAULT_MASK)) {
1254 ca_list[j]->algo_strength & SSL_DEFAULT_MASK;
1257 if (ca_list[j]->valid) {
1259 * explicit ciphersuite found; its protocol version does not
1260 * become part of the search pattern!
1263 cipher_id = ca_list[j]->id;
1266 * not an explicit ciphersuite; only in this case, the
1267 * protocol version is considered part of the search pattern
1270 if (ca_list[j]->algorithm_ssl) {
1272 alg_ssl &= ca_list[j]->algorithm_ssl;
1278 alg_ssl = ca_list[j]->algorithm_ssl;
1287 * Ok, we have the rule, now apply it
1289 if (rule == CIPHER_SPECIAL) { /* special command */
1291 if ((buflen == 8) && strncmp(buf, "STRENGTH", 8) == 0)
1292 ok = ssl_cipher_strength_sort(head_p, tail_p);
1293 else if (buflen == 10 && strncmp(buf, "SECLEVEL=", 9) == 0) {
1294 int level = buf[9] - '0';
1295 if (level < 0 || level > 5) {
1296 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1297 SSL_R_INVALID_COMMAND);
1299 c->sec_level = level;
1303 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1304 SSL_R_INVALID_COMMAND);
1308 * We do not support any "multi" options
1309 * together with "@", so throw away the
1310 * rest of the command, if any left, until
1311 * end or ':' is found.
1313 while ((*l != '\0') && !ITEM_SEP(*l))
1316 ssl_cipher_apply_rule(cipher_id,
1317 alg_mkey, alg_auth, alg_enc, alg_mac,
1318 alg_ssl, algo_strength, rule, -1, head_p,
1321 while ((*l != '\0') && !ITEM_SEP(*l))
1331 #ifndef OPENSSL_NO_EC
1332 static int check_suiteb_cipher_list(const SSL_METHOD *meth, CERT *c,
1333 const char **prule_str)
1335 unsigned int suiteb_flags = 0, suiteb_comb2 = 0;
1336 if (strncmp(*prule_str, "SUITEB128ONLY", 13) == 0) {
1337 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS_ONLY;
1338 } else if (strncmp(*prule_str, "SUITEB128C2", 11) == 0) {
1340 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS;
1341 } else if (strncmp(*prule_str, "SUITEB128", 9) == 0) {
1342 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS;
1343 } else if (strncmp(*prule_str, "SUITEB192", 9) == 0) {
1344 suiteb_flags = SSL_CERT_FLAG_SUITEB_192_LOS;
1348 c->cert_flags &= ~SSL_CERT_FLAG_SUITEB_128_LOS;
1349 c->cert_flags |= suiteb_flags;
1351 suiteb_flags = c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS;
1355 /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */
1357 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)) {
1358 if (meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
1359 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1360 SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
1362 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1363 SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE);
1366 # ifndef OPENSSL_NO_EC
1367 switch (suiteb_flags) {
1368 case SSL_CERT_FLAG_SUITEB_128_LOS:
1370 *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384";
1373 "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384";
1375 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY:
1376 *prule_str = "ECDHE-ECDSA-AES128-GCM-SHA256";
1378 case SSL_CERT_FLAG_SUITEB_192_LOS:
1379 *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384";
1384 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1385 SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE);
1391 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER)
1392 **cipher_list, STACK_OF(SSL_CIPHER)
1393 **cipher_list_by_id,
1394 const char *rule_str, CERT *c)
1396 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1397 uint32_t disabled_mkey, disabled_auth, disabled_enc, disabled_mac,
1399 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1401 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1402 const SSL_CIPHER **ca_list = NULL;
1405 * Return with error if nothing to do.
1407 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1409 #ifndef OPENSSL_NO_EC
1410 if (!check_suiteb_cipher_list(ssl_method, c, &rule_str))
1415 * To reduce the work to do we only want to process the compiled
1416 * in algorithms, so we first get the mask of disabled ciphers.
1419 disabled_mkey = disabled_mkey_mask;
1420 disabled_auth = disabled_auth_mask;
1421 disabled_enc = disabled_enc_mask;
1422 disabled_mac = disabled_mac_mask;
1426 * Now we have to collect the available ciphers from the compiled
1427 * in ciphers. We cannot get more than the number compiled in, so
1428 * it is used for allocation.
1430 num_of_ciphers = ssl_method->num_ciphers();
1432 co_list = OPENSSL_malloc(sizeof(*co_list) * num_of_ciphers);
1433 if (co_list == NULL) {
1434 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1435 return (NULL); /* Failure */
1438 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1439 disabled_mkey, disabled_auth, disabled_enc,
1440 disabled_mac, disabled_ssl, co_list, &head,
1443 /* Now arrange all ciphers by preference: */
1446 * Everything else being equal, prefer ephemeral ECDH over other key
1447 * exchange mechanisms
1449 ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head,
1451 ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head,
1454 /* AES is our preferred symmetric cipher */
1455 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head,
1458 /* Temporarily enable everything else for sorting */
1459 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1461 /* Low priority for MD5 */
1462 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head,
1466 * Move anonymous ciphers to the end. Usually, these will remain
1467 * disabled. (For applications that allow them, they aren't too bad, but
1468 * we prefer authenticated ciphers.)
1470 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1473 /* Move ciphers without forward secrecy to the end */
1474 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1477 * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1,
1480 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1482 ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1485 /* RC4 is sort-of broken -- move the the end */
1486 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head,
1490 * Now sort by symmetric encryption strength. The above ordering remains
1491 * in force within each class
1493 if (!ssl_cipher_strength_sort(&head, &tail)) {
1494 OPENSSL_free(co_list);
1498 /* Now disable everything (maintaining the ordering!) */
1499 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1502 * We also need cipher aliases for selecting based on the rule_str.
1503 * There might be two types of entries in the rule_str: 1) names
1504 * of ciphers themselves 2) aliases for groups of ciphers.
1505 * For 1) we need the available ciphers and for 2) the cipher
1506 * groups of cipher_aliases added together in one list (otherwise
1507 * we would be happy with just the cipher_aliases table).
1509 num_of_group_aliases = OSSL_NELEM(cipher_aliases);
1510 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1511 ca_list = OPENSSL_malloc(sizeof(*ca_list) * num_of_alias_max);
1512 if (ca_list == NULL) {
1513 OPENSSL_free(co_list);
1514 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1515 return (NULL); /* Failure */
1517 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1518 disabled_mkey, disabled_auth, disabled_enc,
1519 disabled_mac, disabled_ssl, head);
1522 * If the rule_string begins with DEFAULT, apply the default rule
1523 * before using the (possibly available) additional rules.
1527 if (strncmp(rule_str, "DEFAULT", 7) == 0) {
1528 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1529 &head, &tail, ca_list, c);
1535 if (ok && (strlen(rule_p) > 0))
1536 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list, c);
1538 OPENSSL_free(ca_list); /* Not needed anymore */
1540 if (!ok) { /* Rule processing failure */
1541 OPENSSL_free(co_list);
1546 * Allocate new "cipherstack" for the result, return with error
1547 * if we cannot get one.
1549 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) {
1550 OPENSSL_free(co_list);
1555 * The cipher selection for the list is done. The ciphers are added
1556 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1558 for (curr = head; curr != NULL; curr = curr->next) {
1560 && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) {
1561 if (!sk_SSL_CIPHER_push(cipherstack, curr->cipher)) {
1562 OPENSSL_free(co_list);
1563 sk_SSL_CIPHER_free(cipherstack);
1567 fprintf(stderr, "<%s>\n", curr->cipher->name);
1571 OPENSSL_free(co_list); /* Not needed any longer */
1573 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1574 if (tmp_cipher_list == NULL) {
1575 sk_SSL_CIPHER_free(cipherstack);
1578 sk_SSL_CIPHER_free(*cipher_list);
1579 *cipher_list = cipherstack;
1580 if (*cipher_list_by_id != NULL)
1581 sk_SSL_CIPHER_free(*cipher_list_by_id);
1582 *cipher_list_by_id = tmp_cipher_list;
1583 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,
1584 ssl_cipher_ptr_id_cmp);
1586 sk_SSL_CIPHER_sort(*cipher_list_by_id);
1587 return (cipherstack);
1590 char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
1593 const char *kx, *au, *enc, *mac;
1594 uint32_t alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl;
1595 static const char *format =
1596 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s\n";
1598 alg_mkey = cipher->algorithm_mkey;
1599 alg_auth = cipher->algorithm_auth;
1600 alg_enc = cipher->algorithm_enc;
1601 alg_mac = cipher->algorithm_mac;
1602 alg_ssl = cipher->algorithm_ssl;
1604 if (alg_ssl & SSL_SSLV3)
1606 else if (alg_ssl & SSL_TLSV1)
1608 else if (alg_ssl & SSL_TLSV1_2)
1685 /* New GOST ciphersuites have both SSL_aGOST12 and SSL_aGOST01 bits */
1686 case (SSL_aGOST12 | SSL_aGOST01):
1720 enc = "AESGCM(128)";
1723 enc = "AESGCM(256)";
1726 enc = "AESCCM(128)";
1729 enc = "AESCCM(256)";
1731 case SSL_AES128CCM8:
1732 enc = "AESCCM8(128)";
1734 case SSL_AES256CCM8:
1735 enc = "AESCCM8(256)";
1737 case SSL_CAMELLIA128:
1738 enc = "Camellia(128)";
1740 case SSL_CAMELLIA256:
1741 enc = "Camellia(256)";
1746 case SSL_eGOST2814789CNT:
1747 case SSL_eGOST2814789CNT12:
1748 enc = "GOST89(256)";
1750 case SSL_CHACHA20POLY1305:
1751 enc = "CHACHA20/POLY1305(256)";
1775 case SSL_GOST89MAC12:
1781 case SSL_GOST12_256:
1782 case SSL_GOST12_512:
1792 buf = OPENSSL_malloc(len);
1794 return ("OPENSSL_malloc Error");
1795 } else if (len < 128)
1796 return ("Buffer too small");
1798 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac);
1803 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1809 i = (int)(c->id >> 24L);
1811 return ("TLSv1/SSLv3");
1816 /* return the actual cipher being used */
1817 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1824 /* number of bits for symmetric cipher */
1825 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1830 if (alg_bits != NULL)
1831 *alg_bits = (int) c->alg_bits;
1832 ret = (int) c->strength_bits;
1837 uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c)
1842 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1847 if ((n == 0) || (sk == NULL))
1849 nn = sk_SSL_COMP_num(sk);
1850 for (i = 0; i < nn; i++) {
1851 ctmp = sk_SSL_COMP_value(sk, i);
1858 #ifdef OPENSSL_NO_COMP
1859 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1863 STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
1868 void SSL_COMP_free_compression_methods(void)
1871 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1877 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1879 load_builtin_compressions();
1880 return (ssl_comp_methods);
1883 STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
1886 STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods;
1887 ssl_comp_methods = meths;
1891 static void cmeth_free(SSL_COMP *cm)
1896 void SSL_COMP_free_compression_methods(void)
1898 STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods;
1899 ssl_comp_methods = NULL;
1900 sk_SSL_COMP_pop_free(old_meths, cmeth_free);
1903 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1907 if (cm == NULL || COMP_get_type(cm) == NID_undef)
1911 * According to draft-ietf-tls-compression-04.txt, the
1912 * compression number ranges should be the following:
1914 * 0 to 63: methods defined by the IETF
1915 * 64 to 192: external party methods assigned by IANA
1916 * 193 to 255: reserved for private use
1918 if (id < 193 || id > 255) {
1919 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1920 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1925 comp = OPENSSL_malloc(sizeof(*comp));
1928 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE);
1934 load_builtin_compressions();
1935 if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) {
1938 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1939 SSL_R_DUPLICATE_COMPRESSION_ID);
1941 } else if ((ssl_comp_methods == NULL)
1942 || !sk_SSL_COMP_push(ssl_comp_methods, comp)) {
1945 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE);
1954 const char *SSL_COMP_get_name(const COMP_METHOD *comp)
1956 #ifndef OPENSSL_NO_COMP
1957 return comp ? COMP_get_name(comp) : NULL;
1963 /* For a cipher return the index corresponding to the certificate type */
1964 int ssl_cipher_get_cert_index(const SSL_CIPHER *c)
1966 uint32_t alg_k, alg_a;
1968 alg_k = c->algorithm_mkey;
1969 alg_a = c->algorithm_auth;
1971 if (alg_k & (SSL_kECDHr | SSL_kECDHe)) {
1973 * we don't need to look at SSL_kECDHE since no certificate is needed
1974 * for anon ECDH and for authenticated ECDHE, the check for the auth
1975 * algorithm will set i correctly NOTE: For ECDH-RSA, we need an ECC
1976 * not an RSA cert but for ECDHE-RSA we need an RSA cert. Placing the
1977 * checks for SSL_kECDH before RSA checks ensures the correct cert is
1980 return SSL_PKEY_ECC;
1981 } else if (alg_a & SSL_aECDSA)
1982 return SSL_PKEY_ECC;
1983 else if (alg_k & SSL_kDHr)
1984 return SSL_PKEY_DH_RSA;
1985 else if (alg_k & SSL_kDHd)
1986 return SSL_PKEY_DH_DSA;
1987 else if (alg_a & SSL_aDSS)
1988 return SSL_PKEY_DSA_SIGN;
1989 else if (alg_a & SSL_aRSA)
1990 return SSL_PKEY_RSA_ENC;
1991 else if (alg_a & SSL_aGOST12)
1992 return SSL_PKEY_GOST_EC;
1993 else if (alg_a & SSL_aGOST01)
1994 return SSL_PKEY_GOST01;
1999 const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr)
2001 const SSL_CIPHER *c;
2002 c = ssl->method->get_cipher_by_char(ptr);
2003 if (c == NULL || c->valid == 0)
2008 const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr)
2010 return ssl->method->get_cipher_by_char(ptr);
2013 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c)
2018 i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc);
2021 return ssl_cipher_table_cipher[i].nid;
2024 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c)
2029 i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac);
2032 return ssl_cipher_table_mac[i].nid;