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_NUM_IDX 19
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 */
204 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX] = {
205 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
209 #define SSL_COMP_NULL_IDX 0
210 #define SSL_COMP_ZLIB_IDX 1
211 #define SSL_COMP_NUM_IDX 2
213 static STACK_OF(SSL_COMP) *ssl_comp_methods = NULL;
216 * Constant SSL_MAX_DIGEST equal to size of digests array should be defined
220 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
222 /* NB: make sure indices in this table matches values above */
223 static const ssl_cipher_table ssl_cipher_table_mac[SSL_MD_NUM_IDX] = {
224 {SSL_MD5, NID_md5}, /* SSL_MD_MD5_IDX 0 */
225 {SSL_SHA1, NID_sha1}, /* SSL_MD_SHA1_IDX 1 */
226 {SSL_GOST94, NID_id_GostR3411_94}, /* SSL_MD_GOST94_IDX 2 */
227 {SSL_GOST89MAC, NID_id_Gost28147_89_MAC}, /* SSL_MD_GOST89MAC_IDX 3 */
228 {SSL_SHA256, NID_sha256}, /* SSL_MD_SHA256_IDX 4 */
229 {SSL_SHA384, NID_sha384}, /* SSL_MD_SHA384_IDX 5 */
230 {SSL_GOST12_256, NID_id_GostR3411_2012_256}, /* SSL_MD_GOST12_256_IDX 6 */
231 {SSL_GOST89MAC12, NID_gost_mac_12}, /* SSL_MD_GOST89MAC12_IDX 7 */
232 {SSL_GOST12_512, NID_id_GostR3411_2012_512}, /* SSL_MD_GOST12_512_IDX 8 */
233 {0, NID_md5_sha1}, /* SSL_MD_MD5_SHA1_IDX 9 */
234 {0, NID_sha224}, /* SSL_MD_SHA224_IDX 10 */
235 {0, NID_sha512} /* SSL_MD_SHA512_IDX 11 */
238 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX] = {
239 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
242 /* Utility function for table lookup */
243 static int ssl_cipher_info_find(const ssl_cipher_table * table,
244 size_t table_cnt, uint32_t mask)
247 for (i = 0; i < table_cnt; i++, table++) {
248 if (table->mask == mask)
254 #define ssl_cipher_info_lookup(table, x) \
255 ssl_cipher_info_find(table, OSSL_NELEM(table), x)
258 * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation
259 * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is
262 static int ssl_mac_pkey_id[SSL_MD_NUM_IDX] = {
263 /* MD5, SHA, GOST94, MAC89 */
264 EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef,
265 /* SHA256, SHA384, GOST2012_256, MAC89-12 */
266 EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef,
271 static int ssl_mac_secret_size[SSL_MD_NUM_IDX] = {
272 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
276 #define CIPHER_KILL 2
279 #define CIPHER_SPECIAL 5
281 typedef struct cipher_order_st {
282 const SSL_CIPHER *cipher;
285 struct cipher_order_st *next, *prev;
288 static const SSL_CIPHER cipher_aliases[] = {
289 /* "ALL" doesn't include eNULL (must be specifically enabled) */
290 {0, SSL_TXT_ALL, 0, 0, 0, ~SSL_eNULL, 0, 0, 0, 0, 0, 0},
291 /* "COMPLEMENTOFALL" */
292 {0, SSL_TXT_CMPALL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
295 * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in
298 {0, SSL_TXT_CMPDEF, 0, 0, 0, ~SSL_eNULL, 0, 0, SSL_NOT_DEFAULT, 0, 0, 0},
301 * key exchange aliases (some of those using only a single bit here
302 * combine multiple key exchange algs according to the RFCs, e.g. kDHE
303 * combines DHE_DSS and DHE_RSA)
305 {0, SSL_TXT_kRSA, 0, SSL_kRSA, 0, 0, 0, 0, 0, 0, 0, 0},
307 {0, SSL_TXT_kDHr, 0, SSL_kDHr, 0, 0, 0, 0, 0, 0, 0, 0},
308 {0, SSL_TXT_kDHd, 0, SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0},
309 {0, SSL_TXT_kDH, 0, SSL_kDHr | SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0},
310 {0, SSL_TXT_kEDH, 0, SSL_kDHE, 0, 0, 0, 0, 0, 0, 0, 0},
311 {0, SSL_TXT_kDHE, 0, SSL_kDHE, 0, 0, 0, 0, 0, 0, 0, 0},
312 {0, SSL_TXT_DH, 0, SSL_kDHr | SSL_kDHd | SSL_kDHE, 0, 0, 0, 0, 0, 0, 0,
315 {0, SSL_TXT_kECDHr, 0, SSL_kECDHr, 0, 0, 0, 0, 0, 0, 0, 0},
316 {0, SSL_TXT_kECDHe, 0, SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0},
317 {0, SSL_TXT_kECDH, 0, SSL_kECDHr | SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0},
318 {0, SSL_TXT_kEECDH, 0, SSL_kECDHE, 0, 0, 0, 0, 0, 0, 0, 0},
319 {0, SSL_TXT_kECDHE, 0, SSL_kECDHE, 0, 0, 0, 0, 0, 0, 0, 0},
320 {0, SSL_TXT_ECDH, 0, SSL_kECDHr | SSL_kECDHe | SSL_kECDHE, 0, 0, 0, 0, 0,
323 {0, SSL_TXT_kPSK, 0, SSL_kPSK, 0, 0, 0, 0, 0, 0, 0, 0},
324 {0, SSL_TXT_kRSAPSK, 0, SSL_kRSAPSK, 0, 0, 0, 0, 0, 0, 0, 0},
325 {0, SSL_TXT_kECDHEPSK, 0, SSL_kECDHEPSK, 0, 0, 0, 0, 0, 0, 0, 0},
326 {0, SSL_TXT_kDHEPSK, 0, SSL_kDHEPSK, 0, 0, 0, 0, 0, 0, 0, 0},
327 {0, SSL_TXT_kSRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
328 {0, SSL_TXT_kGOST, 0, SSL_kGOST, 0, 0, 0, 0, 0, 0, 0, 0},
330 /* server authentication aliases */
331 {0, SSL_TXT_aRSA, 0, 0, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
332 {0, SSL_TXT_aDSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
333 {0, SSL_TXT_DSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
334 {0, SSL_TXT_aNULL, 0, 0, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
335 /* no such ciphersuites supported! */
336 {0, SSL_TXT_aDH, 0, 0, SSL_aDH, 0, 0, 0, 0, 0, 0, 0},
337 {0, SSL_TXT_aECDH, 0, 0, SSL_aECDH, 0, 0, 0, 0, 0, 0, 0},
338 {0, SSL_TXT_aECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
339 {0, SSL_TXT_ECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
340 {0, SSL_TXT_aPSK, 0, 0, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0},
341 {0, SSL_TXT_aGOST01, 0, 0, SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0},
342 {0, SSL_TXT_aGOST12, 0, 0, SSL_aGOST12, 0, 0, 0, 0, 0, 0, 0},
343 {0, SSL_TXT_aGOST, 0, 0, SSL_aGOST01 | SSL_aGOST12, 0, 0, 0,
345 {0, SSL_TXT_aSRP, 0, 0, SSL_aSRP, 0, 0, 0, 0, 0, 0, 0},
347 /* aliases combining key exchange and server authentication */
348 {0, SSL_TXT_EDH, 0, SSL_kDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
349 {0, SSL_TXT_DHE, 0, SSL_kDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
350 {0, SSL_TXT_EECDH, 0, SSL_kECDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
351 {0, SSL_TXT_ECDHE, 0, SSL_kECDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
352 {0, SSL_TXT_NULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
353 {0, SSL_TXT_RSA, 0, SSL_kRSA, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
354 {0, SSL_TXT_ADH, 0, SSL_kDHE, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
355 {0, SSL_TXT_AECDH, 0, SSL_kECDHE, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
356 {0, SSL_TXT_PSK, 0, SSL_PSK, 0, 0, 0, 0, 0, 0, 0, 0},
357 {0, SSL_TXT_SRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
359 /* symmetric encryption aliases */
360 {0, SSL_TXT_DES, 0, 0, 0, SSL_DES, 0, 0, 0, 0, 0, 0},
361 {0, SSL_TXT_3DES, 0, 0, 0, SSL_3DES, 0, 0, 0, 0, 0, 0},
362 {0, SSL_TXT_RC4, 0, 0, 0, SSL_RC4, 0, 0, 0, 0, 0, 0},
363 {0, SSL_TXT_RC2, 0, 0, 0, SSL_RC2, 0, 0, 0, 0, 0, 0},
364 {0, SSL_TXT_IDEA, 0, 0, 0, SSL_IDEA, 0, 0, 0, 0, 0, 0},
365 {0, SSL_TXT_SEED, 0, 0, 0, SSL_SEED, 0, 0, 0, 0, 0, 0},
366 {0, SSL_TXT_eNULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
367 {0, SSL_TXT_GOST, 0, 0, 0, SSL_eGOST2814789CNT | SSL_eGOST2814789CNT12, 0,
369 {0, SSL_TXT_AES128, 0, 0, 0, SSL_AES128 | SSL_AES128GCM | SSL_AES128CCM | SSL_AES128CCM8, 0,
371 {0, SSL_TXT_AES256, 0, 0, 0, SSL_AES256 | SSL_AES256GCM | SSL_AES256CCM | SSL_AES256CCM8, 0,
373 {0, SSL_TXT_AES, 0, 0, 0, SSL_AES, 0, 0, 0, 0, 0, 0},
374 {0, SSL_TXT_AES_GCM, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM, 0, 0, 0, 0,
376 {0, SSL_TXT_AES_CCM, 0, 0, 0, SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8, 0, 0, 0, 0,
378 {0, SSL_TXT_AES_CCM_8, 0, 0, 0, SSL_AES128CCM8 | SSL_AES256CCM8, 0, 0, 0, 0,
380 {0, SSL_TXT_CAMELLIA128, 0, 0, 0, SSL_CAMELLIA128, 0, 0, 0, 0, 0, 0},
381 {0, SSL_TXT_CAMELLIA256, 0, 0, 0, SSL_CAMELLIA256, 0, 0, 0, 0, 0, 0},
382 {0, SSL_TXT_CAMELLIA, 0, 0, 0, SSL_CAMELLIA128 | SSL_CAMELLIA256, 0, 0, 0,
386 {0, SSL_TXT_MD5, 0, 0, 0, 0, SSL_MD5, 0, 0, 0, 0, 0},
387 {0, SSL_TXT_SHA1, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
388 {0, SSL_TXT_SHA, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
389 {0, SSL_TXT_GOST94, 0, 0, 0, 0, SSL_GOST94, 0, 0, 0, 0, 0},
390 {0, SSL_TXT_GOST89MAC, 0, 0, 0, 0, SSL_GOST89MAC | SSL_GOST89MAC12, 0, 0,
392 {0, SSL_TXT_SHA256, 0, 0, 0, 0, SSL_SHA256, 0, 0, 0, 0, 0},
393 {0, SSL_TXT_SHA384, 0, 0, 0, 0, SSL_SHA384, 0, 0, 0, 0, 0},
394 {0, SSL_TXT_GOST12, 0, 0, 0, 0, SSL_GOST12_256, 0, 0, 0, 0, 0},
396 /* protocol version aliases */
397 {0, SSL_TXT_SSLV3, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0},
398 {0, SSL_TXT_TLSV1, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0},
399 {0, "TLSv1.0", 0, 0, 0, 0, 0, SSL_TLSV1, 0, 0, 0, 0},
400 {0, SSL_TXT_TLSV1_2, 0, 0, 0, 0, 0, SSL_TLSV1_2, 0, 0, 0, 0},
402 /* strength classes */
403 {0, SSL_TXT_LOW, 0, 0, 0, 0, 0, 0, SSL_LOW, 0, 0, 0},
404 {0, SSL_TXT_MEDIUM, 0, 0, 0, 0, 0, 0, SSL_MEDIUM, 0, 0, 0},
405 {0, SSL_TXT_HIGH, 0, 0, 0, 0, 0, 0, SSL_HIGH, 0, 0, 0},
406 /* FIPS 140-2 approved ciphersuite */
407 {0, SSL_TXT_FIPS, 0, 0, 0, ~SSL_eNULL, 0, 0, SSL_FIPS, 0, 0, 0},
409 /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */
410 {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA, 0,
411 SSL_kDHE, SSL_aDSS, SSL_3DES, SSL_SHA1, SSL_SSLV3,
412 SSL_HIGH | SSL_FIPS, 0, 0, 0,},
413 {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA, 0,
414 SSL_kDHE, SSL_aRSA, SSL_3DES, SSL_SHA1, SSL_SSLV3,
415 SSL_HIGH | SSL_FIPS, 0, 0, 0,},
420 * Search for public key algorithm with given name and return its pkey_id if
421 * it is available. Otherwise return 0
423 #ifdef OPENSSL_NO_ENGINE
425 static int get_optional_pkey_id(const char *pkey_name)
427 const EVP_PKEY_ASN1_METHOD *ameth;
429 ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1);
430 if (ameth && EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL,
439 static int get_optional_pkey_id(const char *pkey_name)
441 const EVP_PKEY_ASN1_METHOD *ameth;
442 ENGINE *tmpeng = NULL;
444 ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1);
446 if (EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL,
451 ENGINE_finish(tmpeng);
457 /* masks of disabled algorithms */
458 static uint32_t disabled_enc_mask;
459 static uint32_t disabled_mac_mask;
460 static uint32_t disabled_mkey_mask;
461 static uint32_t disabled_auth_mask;
463 void ssl_load_ciphers(void)
466 const ssl_cipher_table *t;
467 disabled_enc_mask = 0;
468 for (i = 0, t = ssl_cipher_table_cipher; i < SSL_ENC_NUM_IDX; i++, t++) {
469 if (t->nid == NID_undef) {
470 ssl_cipher_methods[i] = NULL;
472 const EVP_CIPHER *cipher = EVP_get_cipherbynid(t->nid);
473 ssl_cipher_methods[i] = cipher;
475 disabled_enc_mask |= t->mask;
478 #ifdef SSL_FORBID_ENULL
479 disabled_enc_mask |= SSL_eNULL;
481 disabled_mac_mask = 0;
482 for (i = 0, t = ssl_cipher_table_mac; i < SSL_MD_NUM_IDX; i++, t++) {
483 const EVP_MD *md = EVP_get_digestbynid(t->nid);
484 ssl_digest_methods[i] = md;
486 disabled_mac_mask |= t->mask;
488 ssl_mac_secret_size[i] = EVP_MD_size(md);
489 OPENSSL_assert(ssl_mac_secret_size[i] >= 0);
492 /* Make sure we can access MD5 and SHA1 */
493 OPENSSL_assert(ssl_digest_methods[SSL_MD_MD5_IDX] != NULL);
494 OPENSSL_assert(ssl_digest_methods[SSL_MD_SHA1_IDX] != NULL);
496 disabled_mkey_mask = 0;
497 disabled_auth_mask = 0;
499 #ifdef OPENSSL_NO_RSA
500 disabled_mkey_mask |= SSL_kRSA | SSL_kRSAPSK;
501 disabled_auth_mask |= SSL_aRSA;
503 #ifdef OPENSSL_NO_DSA
504 disabled_auth_mask |= SSL_aDSS;
507 disabled_mkey_mask |= SSL_kDHr | SSL_kDHd | SSL_kDHE | SSL_kDHEPSK;
508 disabled_auth_mask |= SSL_aDH;
511 disabled_mkey_mask |= SSL_kECDHe | SSL_kECDHr | SSL_kECDHEPSK;
512 disabled_auth_mask |= SSL_aECDSA | SSL_aECDH;
514 #ifdef OPENSSL_NO_PSK
515 disabled_mkey_mask |= SSL_PSK;
516 disabled_auth_mask |= SSL_aPSK;
518 #ifdef OPENSSL_NO_SRP
519 disabled_mkey_mask |= SSL_kSRP;
523 * Check for presence of GOST 34.10 algorithms, and if they are not
524 * present, disable appropriate auth and key exchange
526 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac");
527 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) {
528 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32;
530 disabled_mac_mask |= SSL_GOST89MAC;
533 ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX] = get_optional_pkey_id("gost-mac-12");
534 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX]) {
535 ssl_mac_secret_size[SSL_MD_GOST89MAC12_IDX] = 32;
537 disabled_mac_mask |= SSL_GOST89MAC12;
540 if (!get_optional_pkey_id("gost2001"))
541 disabled_auth_mask |= SSL_aGOST01 | SSL_aGOST12;
542 if (!get_optional_pkey_id("gost2012_256"))
543 disabled_auth_mask |= SSL_aGOST12;
544 if (!get_optional_pkey_id("gost2012_512"))
545 disabled_auth_mask |= SSL_aGOST12;
547 * Disable GOST key exchange if no GOST signature algs are available *
549 if ((disabled_auth_mask & (SSL_aGOST01 | SSL_aGOST12)) == (SSL_aGOST01 | SSL_aGOST12))
550 disabled_mkey_mask |= SSL_kGOST;
553 #ifndef OPENSSL_NO_COMP
555 static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b)
557 return ((*a)->id - (*b)->id);
560 static void load_builtin_compressions(void)
562 int got_write_lock = 0;
564 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
565 if (ssl_comp_methods == NULL) {
566 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
567 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
570 if (ssl_comp_methods == NULL) {
571 SSL_COMP *comp = NULL;
572 COMP_METHOD *method = COMP_zlib();
575 ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp);
576 if (COMP_get_type(method) != NID_undef
577 && ssl_comp_methods != NULL) {
578 comp = OPENSSL_malloc(sizeof(*comp));
580 comp->method = method;
581 comp->id = SSL_COMP_ZLIB_IDX;
582 comp->name = COMP_get_name(method);
583 sk_SSL_COMP_push(ssl_comp_methods, comp);
584 sk_SSL_COMP_sort(ssl_comp_methods);
592 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
594 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
598 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
599 const EVP_MD **md, int *mac_pkey_type,
600 int *mac_secret_size, SSL_COMP **comp, int use_etm)
610 #ifndef OPENSSL_NO_COMP
611 load_builtin_compressions();
615 ctmp.id = s->compress_meth;
616 if (ssl_comp_methods != NULL) {
617 i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp);
619 *comp = sk_SSL_COMP_value(ssl_comp_methods, i);
623 /* If were only interested in comp then return success */
624 if ((enc == NULL) && (md == NULL))
628 if ((enc == NULL) || (md == NULL))
631 i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc);
636 if (i == SSL_ENC_NULL_IDX)
637 *enc = EVP_enc_null();
639 *enc = ssl_cipher_methods[i];
642 i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac);
645 if (mac_pkey_type != NULL)
646 *mac_pkey_type = NID_undef;
647 if (mac_secret_size != NULL)
648 *mac_secret_size = 0;
649 if (c->algorithm_mac == SSL_AEAD)
650 mac_pkey_type = NULL;
652 *md = ssl_digest_methods[i];
653 if (mac_pkey_type != NULL)
654 *mac_pkey_type = ssl_mac_pkey_id[i];
655 if (mac_secret_size != NULL)
656 *mac_secret_size = ssl_mac_secret_size[i];
659 if ((*enc != NULL) &&
660 (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER))
661 && (!mac_pkey_type || *mac_pkey_type != NID_undef)) {
662 const EVP_CIPHER *evp;
667 if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR ||
668 s->ssl_version < TLS1_VERSION)
674 if (c->algorithm_enc == SSL_RC4 &&
675 c->algorithm_mac == SSL_MD5 &&
676 (evp = EVP_get_cipherbyname("RC4-HMAC-MD5")))
677 *enc = evp, *md = NULL;
678 else if (c->algorithm_enc == SSL_AES128 &&
679 c->algorithm_mac == SSL_SHA1 &&
680 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
681 *enc = evp, *md = NULL;
682 else if (c->algorithm_enc == SSL_AES256 &&
683 c->algorithm_mac == SSL_SHA1 &&
684 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
685 *enc = evp, *md = NULL;
686 else if (c->algorithm_enc == SSL_AES128 &&
687 c->algorithm_mac == SSL_SHA256 &&
688 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA256")))
689 *enc = evp, *md = NULL;
690 else if (c->algorithm_enc == SSL_AES256 &&
691 c->algorithm_mac == SSL_SHA256 &&
692 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA256")))
693 *enc = evp, *md = NULL;
699 const EVP_MD *ssl_md(int idx)
701 idx &= SSL_HANDSHAKE_MAC_MASK;
702 if (idx < 0 || idx >= SSL_MD_NUM_IDX)
704 return ssl_digest_methods[idx];
707 const EVP_MD *ssl_handshake_md(SSL *s)
709 return ssl_md(ssl_get_algorithm2(s));
712 const EVP_MD *ssl_prf_md(SSL *s)
714 return ssl_md(ssl_get_algorithm2(s) >> TLS1_PRF_DGST_SHIFT);
717 #define ITEM_SEP(a) \
718 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
720 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
727 if (curr->prev != NULL)
728 curr->prev->next = curr->next;
729 if (curr->next != NULL)
730 curr->next->prev = curr->prev;
731 (*tail)->next = curr;
737 static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
744 if (curr->next != NULL)
745 curr->next->prev = curr->prev;
746 if (curr->prev != NULL)
747 curr->prev->next = curr->next;
748 (*head)->prev = curr;
754 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
756 uint32_t disabled_mkey,
757 uint32_t disabled_auth,
758 uint32_t disabled_enc,
759 uint32_t disabled_mac,
760 uint32_t disabled_ssl,
761 CIPHER_ORDER *co_list,
762 CIPHER_ORDER **head_p,
763 CIPHER_ORDER **tail_p)
769 * We have num_of_ciphers descriptions compiled in, depending on the
770 * method selected (SSLv3, TLSv1 etc).
771 * These will later be sorted in a linked list with at most num
775 /* Get the initial list of ciphers */
776 co_list_num = 0; /* actual count of ciphers */
777 for (i = 0; i < num_of_ciphers; i++) {
778 c = ssl_method->get_cipher(i);
779 /* drop those that use any of that is not available */
780 if ((c != NULL) && c->valid &&
781 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) &&
782 !(c->algorithm_mkey & disabled_mkey) &&
783 !(c->algorithm_auth & disabled_auth) &&
784 !(c->algorithm_enc & disabled_enc) &&
785 !(c->algorithm_mac & disabled_mac) &&
786 !(c->algorithm_ssl & disabled_ssl)) {
787 co_list[co_list_num].cipher = c;
788 co_list[co_list_num].next = NULL;
789 co_list[co_list_num].prev = NULL;
790 co_list[co_list_num].active = 0;
793 * if (!sk_push(ca_list,(char *)c)) goto err;
799 * Prepare linked list from list entries
801 if (co_list_num > 0) {
802 co_list[0].prev = NULL;
804 if (co_list_num > 1) {
805 co_list[0].next = &co_list[1];
807 for (i = 1; i < co_list_num - 1; i++) {
808 co_list[i].prev = &co_list[i - 1];
809 co_list[i].next = &co_list[i + 1];
812 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
815 co_list[co_list_num - 1].next = NULL;
817 *head_p = &co_list[0];
818 *tail_p = &co_list[co_list_num - 1];
822 static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list,
823 int num_of_group_aliases,
824 uint32_t disabled_mkey,
825 uint32_t disabled_auth,
826 uint32_t disabled_enc,
827 uint32_t disabled_mac,
828 uint32_t disabled_ssl,
831 CIPHER_ORDER *ciph_curr;
832 const SSL_CIPHER **ca_curr;
834 uint32_t mask_mkey = ~disabled_mkey;
835 uint32_t mask_auth = ~disabled_auth;
836 uint32_t mask_enc = ~disabled_enc;
837 uint32_t mask_mac = ~disabled_mac;
838 uint32_t mask_ssl = ~disabled_ssl;
841 * First, add the real ciphers as already collected
845 while (ciph_curr != NULL) {
846 *ca_curr = ciph_curr->cipher;
848 ciph_curr = ciph_curr->next;
852 * Now we add the available ones from the cipher_aliases[] table.
853 * They represent either one or more algorithms, some of which
854 * in any affected category must be supported (set in enabled_mask),
855 * or represent a cipher strength value (will be added in any case because algorithms=0).
857 for (i = 0; i < num_of_group_aliases; i++) {
858 uint32_t algorithm_mkey = cipher_aliases[i].algorithm_mkey;
859 uint32_t algorithm_auth = cipher_aliases[i].algorithm_auth;
860 uint32_t algorithm_enc = cipher_aliases[i].algorithm_enc;
861 uint32_t algorithm_mac = cipher_aliases[i].algorithm_mac;
862 uint32_t algorithm_ssl = cipher_aliases[i].algorithm_ssl;
865 if ((algorithm_mkey & mask_mkey) == 0)
869 if ((algorithm_auth & mask_auth) == 0)
873 if ((algorithm_enc & mask_enc) == 0)
877 if ((algorithm_mac & mask_mac) == 0)
881 if ((algorithm_ssl & mask_ssl) == 0)
884 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
888 *ca_curr = NULL; /* end of list */
891 static void ssl_cipher_apply_rule(uint32_t cipher_id, uint32_t alg_mkey,
892 uint32_t alg_auth, uint32_t alg_enc,
893 uint32_t alg_mac, uint32_t alg_ssl,
894 uint32_t algo_strength, int rule,
895 int32_t strength_bits, CIPHER_ORDER **head_p,
896 CIPHER_ORDER **tail_p)
898 CIPHER_ORDER *head, *tail, *curr, *next, *last;
899 const SSL_CIPHER *cp;
904 "Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
905 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl,
906 algo_strength, strength_bits);
909 if (rule == CIPHER_DEL)
910 reverse = 1; /* needed to maintain sorting between
911 * currently deleted ciphers */
934 next = reverse ? curr->prev : curr->next;
939 * Selection criteria is either the value of strength_bits
940 * or the algorithms used.
942 if (strength_bits >= 0) {
943 if (strength_bits != cp->strength_bits)
948 "\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n",
949 cp->name, cp->algorithm_mkey, cp->algorithm_auth,
950 cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl,
953 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
954 if (cipher_id && cipher_id != cp->id)
957 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
959 if (alg_auth && !(alg_auth & cp->algorithm_auth))
961 if (alg_enc && !(alg_enc & cp->algorithm_enc))
963 if (alg_mac && !(alg_mac & cp->algorithm_mac))
965 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
967 if (algo_strength && !(algo_strength & cp->algo_strength))
969 if ((algo_strength & SSL_DEFAULT_MASK)
970 && !(algo_strength & SSL_DEFAULT_MASK & cp->algo_strength))
975 fprintf(stderr, "Action = %d\n", rule);
978 /* add the cipher if it has not been added yet. */
979 if (rule == CIPHER_ADD) {
982 ll_append_tail(&head, curr, &tail);
986 /* Move the added cipher to this location */
987 else if (rule == CIPHER_ORD) {
990 ll_append_tail(&head, curr, &tail);
992 } else if (rule == CIPHER_DEL) {
996 * most recently deleted ciphersuites get best positions for
997 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
998 * in reverse to maintain the order)
1000 ll_append_head(&head, curr, &tail);
1003 } else if (rule == CIPHER_KILL) {
1008 curr->prev->next = curr->next;
1012 if (curr->next != NULL)
1013 curr->next->prev = curr->prev;
1014 if (curr->prev != NULL)
1015 curr->prev->next = curr->next;
1025 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
1026 CIPHER_ORDER **tail_p)
1028 int32_t max_strength_bits;
1029 int i, *number_uses;
1033 * This routine sorts the ciphers with descending strength. The sorting
1034 * must keep the pre-sorted sequence, so we apply the normal sorting
1035 * routine as '+' movement to the end of the list.
1037 max_strength_bits = 0;
1039 while (curr != NULL) {
1040 if (curr->active && (curr->cipher->strength_bits > max_strength_bits))
1041 max_strength_bits = curr->cipher->strength_bits;
1045 number_uses = OPENSSL_zalloc(sizeof(int) * (max_strength_bits + 1));
1046 if (number_uses == NULL) {
1047 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE);
1052 * Now find the strength_bits values actually used
1055 while (curr != NULL) {
1057 number_uses[curr->cipher->strength_bits]++;
1061 * Go through the list of used strength_bits values in descending
1064 for (i = max_strength_bits; i >= 0; i--)
1065 if (number_uses[i] > 0)
1066 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p,
1069 OPENSSL_free(number_uses);
1073 static int ssl_cipher_process_rulestr(const char *rule_str,
1074 CIPHER_ORDER **head_p,
1075 CIPHER_ORDER **tail_p,
1076 const SSL_CIPHER **ca_list, CERT *c)
1078 uint32_t alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength;
1079 const char *l, *buf;
1080 int j, multi, found, rule, retval, ok, buflen;
1081 uint32_t cipher_id = 0;
1094 } else if (ch == '+') {
1097 } else if (ch == '!') {
1100 } else if (ch == '@') {
1101 rule = CIPHER_SPECIAL;
1123 #ifndef CHARSET_EBCDIC
1124 while (((ch >= 'A') && (ch <= 'Z')) ||
1125 ((ch >= '0') && (ch <= '9')) ||
1126 ((ch >= 'a') && (ch <= 'z')) ||
1127 (ch == '-') || (ch == '.') || (ch == '='))
1129 while (isalnum(ch) || (ch == '-') || (ch == '.') || (ch == '='))
1138 * We hit something we cannot deal with,
1139 * it is no command or separator nor
1140 * alphanumeric, so we call this an error.
1142 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1143 SSL_R_INVALID_COMMAND);
1149 if (rule == CIPHER_SPECIAL) {
1150 found = 0; /* unused -- avoid compiler warning */
1151 break; /* special treatment */
1154 /* check for multi-part specification */
1162 * Now search for the cipher alias in the ca_list. Be careful
1163 * with the strncmp, because the "buflen" limitation
1164 * will make the rule "ADH:SOME" and the cipher
1165 * "ADH-MY-CIPHER" look like a match for buflen=3.
1166 * So additionally check whether the cipher name found
1167 * has the correct length. We can save a strlen() call:
1168 * just checking for the '\0' at the right place is
1169 * sufficient, we have to strncmp() anyway. (We cannot
1170 * use strcmp(), because buf is not '\0' terminated.)
1174 while (ca_list[j]) {
1175 if (strncmp(buf, ca_list[j]->name, buflen) == 0
1176 && (ca_list[j]->name[buflen] == '\0')) {
1184 break; /* ignore this entry */
1186 if (ca_list[j]->algorithm_mkey) {
1188 alg_mkey &= ca_list[j]->algorithm_mkey;
1194 alg_mkey = ca_list[j]->algorithm_mkey;
1197 if (ca_list[j]->algorithm_auth) {
1199 alg_auth &= ca_list[j]->algorithm_auth;
1205 alg_auth = ca_list[j]->algorithm_auth;
1208 if (ca_list[j]->algorithm_enc) {
1210 alg_enc &= ca_list[j]->algorithm_enc;
1216 alg_enc = ca_list[j]->algorithm_enc;
1219 if (ca_list[j]->algorithm_mac) {
1221 alg_mac &= ca_list[j]->algorithm_mac;
1227 alg_mac = ca_list[j]->algorithm_mac;
1230 if (ca_list[j]->algo_strength) {
1231 if (algo_strength) {
1232 algo_strength &= ca_list[j]->algo_strength;
1233 if (!algo_strength) {
1238 algo_strength = ca_list[j]->algo_strength;
1241 if (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) {
1242 if (algo_strength & SSL_DEFAULT_MASK) {
1244 (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) |
1246 if (!(algo_strength & SSL_DEFAULT_MASK)) {
1252 ca_list[j]->algo_strength & SSL_DEFAULT_MASK;
1255 if (ca_list[j]->valid) {
1257 * explicit ciphersuite found; its protocol version does not
1258 * become part of the search pattern!
1261 cipher_id = ca_list[j]->id;
1264 * not an explicit ciphersuite; only in this case, the
1265 * protocol version is considered part of the search pattern
1268 if (ca_list[j]->algorithm_ssl) {
1270 alg_ssl &= ca_list[j]->algorithm_ssl;
1276 alg_ssl = ca_list[j]->algorithm_ssl;
1285 * Ok, we have the rule, now apply it
1287 if (rule == CIPHER_SPECIAL) { /* special command */
1289 if ((buflen == 8) && strncmp(buf, "STRENGTH", 8) == 0)
1290 ok = ssl_cipher_strength_sort(head_p, tail_p);
1291 else if (buflen == 10 && strncmp(buf, "SECLEVEL=", 9) == 0) {
1292 int level = buf[9] - '0';
1293 if (level < 0 || level > 5) {
1294 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1295 SSL_R_INVALID_COMMAND);
1297 c->sec_level = level;
1301 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1302 SSL_R_INVALID_COMMAND);
1306 * We do not support any "multi" options
1307 * together with "@", so throw away the
1308 * rest of the command, if any left, until
1309 * end or ':' is found.
1311 while ((*l != '\0') && !ITEM_SEP(*l))
1314 ssl_cipher_apply_rule(cipher_id,
1315 alg_mkey, alg_auth, alg_enc, alg_mac,
1316 alg_ssl, algo_strength, rule, -1, head_p,
1319 while ((*l != '\0') && !ITEM_SEP(*l))
1329 #ifndef OPENSSL_NO_EC
1330 static int check_suiteb_cipher_list(const SSL_METHOD *meth, CERT *c,
1331 const char **prule_str)
1333 unsigned int suiteb_flags = 0, suiteb_comb2 = 0;
1334 if (strncmp(*prule_str, "SUITEB128ONLY", 13) == 0) {
1335 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS_ONLY;
1336 } else if (strncmp(*prule_str, "SUITEB128C2", 11) == 0) {
1338 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS;
1339 } else if (strncmp(*prule_str, "SUITEB128", 9) == 0) {
1340 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS;
1341 } else if (strncmp(*prule_str, "SUITEB192", 9) == 0) {
1342 suiteb_flags = SSL_CERT_FLAG_SUITEB_192_LOS;
1346 c->cert_flags &= ~SSL_CERT_FLAG_SUITEB_128_LOS;
1347 c->cert_flags |= suiteb_flags;
1349 suiteb_flags = c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS;
1353 /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */
1355 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)) {
1356 if (meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
1357 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1358 SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
1360 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1361 SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE);
1364 # ifndef OPENSSL_NO_EC
1365 switch (suiteb_flags) {
1366 case SSL_CERT_FLAG_SUITEB_128_LOS:
1368 *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384";
1371 "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384";
1373 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY:
1374 *prule_str = "ECDHE-ECDSA-AES128-GCM-SHA256";
1376 case SSL_CERT_FLAG_SUITEB_192_LOS:
1377 *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384";
1382 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1383 SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE);
1389 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER)
1390 **cipher_list, STACK_OF(SSL_CIPHER)
1391 **cipher_list_by_id,
1392 const char *rule_str, CERT *c)
1394 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1395 uint32_t disabled_mkey, disabled_auth, disabled_enc, disabled_mac,
1397 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1399 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1400 const SSL_CIPHER **ca_list = NULL;
1403 * Return with error if nothing to do.
1405 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1407 #ifndef OPENSSL_NO_EC
1408 if (!check_suiteb_cipher_list(ssl_method, c, &rule_str))
1413 * To reduce the work to do we only want to process the compiled
1414 * in algorithms, so we first get the mask of disabled ciphers.
1417 disabled_mkey = disabled_mkey_mask;
1418 disabled_auth = disabled_auth_mask;
1419 disabled_enc = disabled_enc_mask;
1420 disabled_mac = disabled_mac_mask;
1424 * Now we have to collect the available ciphers from the compiled
1425 * in ciphers. We cannot get more than the number compiled in, so
1426 * it is used for allocation.
1428 num_of_ciphers = ssl_method->num_ciphers();
1430 co_list = OPENSSL_malloc(sizeof(*co_list) * num_of_ciphers);
1431 if (co_list == NULL) {
1432 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1433 return (NULL); /* Failure */
1436 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1437 disabled_mkey, disabled_auth, disabled_enc,
1438 disabled_mac, disabled_ssl, co_list, &head,
1441 /* Now arrange all ciphers by preference: */
1444 * Everything else being equal, prefer ephemeral ECDH over other key
1445 * exchange mechanisms
1447 ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head,
1449 ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head,
1452 /* AES is our preferred symmetric cipher */
1453 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head,
1456 /* Temporarily enable everything else for sorting */
1457 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1459 /* Low priority for MD5 */
1460 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head,
1464 * Move anonymous ciphers to the end. Usually, these will remain
1465 * disabled. (For applications that allow them, they aren't too bad, but
1466 * we prefer authenticated ciphers.)
1468 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1471 /* Move ciphers without forward secrecy to the end */
1472 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1475 * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1,
1478 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1480 ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1483 /* RC4 is sort-of broken -- move the the end */
1484 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head,
1488 * Now sort by symmetric encryption strength. The above ordering remains
1489 * in force within each class
1491 if (!ssl_cipher_strength_sort(&head, &tail)) {
1492 OPENSSL_free(co_list);
1496 /* Now disable everything (maintaining the ordering!) */
1497 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1500 * We also need cipher aliases for selecting based on the rule_str.
1501 * There might be two types of entries in the rule_str: 1) names
1502 * of ciphers themselves 2) aliases for groups of ciphers.
1503 * For 1) we need the available ciphers and for 2) the cipher
1504 * groups of cipher_aliases added together in one list (otherwise
1505 * we would be happy with just the cipher_aliases table).
1507 num_of_group_aliases = OSSL_NELEM(cipher_aliases);
1508 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1509 ca_list = OPENSSL_malloc(sizeof(*ca_list) * num_of_alias_max);
1510 if (ca_list == NULL) {
1511 OPENSSL_free(co_list);
1512 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1513 return (NULL); /* Failure */
1515 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1516 disabled_mkey, disabled_auth, disabled_enc,
1517 disabled_mac, disabled_ssl, head);
1520 * If the rule_string begins with DEFAULT, apply the default rule
1521 * before using the (possibly available) additional rules.
1525 if (strncmp(rule_str, "DEFAULT", 7) == 0) {
1526 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1527 &head, &tail, ca_list, c);
1533 if (ok && (strlen(rule_p) > 0))
1534 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list, c);
1536 OPENSSL_free(ca_list); /* Not needed anymore */
1538 if (!ok) { /* Rule processing failure */
1539 OPENSSL_free(co_list);
1544 * Allocate new "cipherstack" for the result, return with error
1545 * if we cannot get one.
1547 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) {
1548 OPENSSL_free(co_list);
1553 * The cipher selection for the list is done. The ciphers are added
1554 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1556 for (curr = head; curr != NULL; curr = curr->next) {
1558 && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) {
1559 if (!sk_SSL_CIPHER_push(cipherstack, curr->cipher)) {
1560 OPENSSL_free(co_list);
1561 sk_SSL_CIPHER_free(cipherstack);
1565 fprintf(stderr, "<%s>\n", curr->cipher->name);
1569 OPENSSL_free(co_list); /* Not needed any longer */
1571 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1572 if (tmp_cipher_list == NULL) {
1573 sk_SSL_CIPHER_free(cipherstack);
1576 sk_SSL_CIPHER_free(*cipher_list);
1577 *cipher_list = cipherstack;
1578 if (*cipher_list_by_id != NULL)
1579 sk_SSL_CIPHER_free(*cipher_list_by_id);
1580 *cipher_list_by_id = tmp_cipher_list;
1581 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,
1582 ssl_cipher_ptr_id_cmp);
1584 sk_SSL_CIPHER_sort(*cipher_list_by_id);
1585 return (cipherstack);
1588 char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
1591 const char *kx, *au, *enc, *mac;
1592 uint32_t alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl;
1593 static const char *format =
1594 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s\n";
1596 alg_mkey = cipher->algorithm_mkey;
1597 alg_auth = cipher->algorithm_auth;
1598 alg_enc = cipher->algorithm_enc;
1599 alg_mac = cipher->algorithm_mac;
1600 alg_ssl = cipher->algorithm_ssl;
1602 if (alg_ssl & SSL_SSLV3)
1604 else if (alg_ssl & SSL_TLSV1)
1606 else if (alg_ssl & SSL_TLSV1_2)
1683 /* New GOST ciphersuites have both SSL_aGOST12 and SSL_aGOST01 bits */
1684 case (SSL_aGOST12 | SSL_aGOST01):
1718 enc = "AESGCM(128)";
1721 enc = "AESGCM(256)";
1724 enc = "AESCCM(128)";
1727 enc = "AESCCM(256)";
1729 case SSL_AES128CCM8:
1730 enc = "AESCCM8(128)";
1732 case SSL_AES256CCM8:
1733 enc = "AESCCM8(256)";
1735 case SSL_CAMELLIA128:
1736 enc = "Camellia(128)";
1738 case SSL_CAMELLIA256:
1739 enc = "Camellia(256)";
1744 case SSL_eGOST2814789CNT:
1745 case SSL_eGOST2814789CNT12:
1746 enc = "GOST89(256)";
1770 case SSL_GOST89MAC12:
1776 case SSL_GOST12_256:
1777 case SSL_GOST12_512:
1787 buf = OPENSSL_malloc(len);
1789 return ("OPENSSL_malloc Error");
1790 } else if (len < 128)
1791 return ("Buffer too small");
1793 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac);
1798 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1804 i = (int)(c->id >> 24L);
1806 return ("TLSv1/SSLv3");
1811 /* return the actual cipher being used */
1812 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1819 /* number of bits for symmetric cipher */
1820 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1825 if (alg_bits != NULL)
1826 *alg_bits = (int) c->alg_bits;
1827 ret = (int) c->strength_bits;
1832 uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c)
1837 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1842 if ((n == 0) || (sk == NULL))
1844 nn = sk_SSL_COMP_num(sk);
1845 for (i = 0; i < nn; i++) {
1846 ctmp = sk_SSL_COMP_value(sk, i);
1853 #ifdef OPENSSL_NO_COMP
1854 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1858 STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
1863 void SSL_COMP_free_compression_methods(void)
1866 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1872 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1874 load_builtin_compressions();
1875 return (ssl_comp_methods);
1878 STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
1881 STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods;
1882 ssl_comp_methods = meths;
1886 static void cmeth_free(SSL_COMP *cm)
1891 void SSL_COMP_free_compression_methods(void)
1893 STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods;
1894 ssl_comp_methods = NULL;
1895 sk_SSL_COMP_pop_free(old_meths, cmeth_free);
1898 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1902 if (cm == NULL || COMP_get_type(cm) == NID_undef)
1906 * According to draft-ietf-tls-compression-04.txt, the
1907 * compression number ranges should be the following:
1909 * 0 to 63: methods defined by the IETF
1910 * 64 to 192: external party methods assigned by IANA
1911 * 193 to 255: reserved for private use
1913 if (id < 193 || id > 255) {
1914 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1915 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1920 comp = OPENSSL_malloc(sizeof(*comp));
1923 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE);
1929 load_builtin_compressions();
1930 if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) {
1933 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1934 SSL_R_DUPLICATE_COMPRESSION_ID);
1936 } else if ((ssl_comp_methods == NULL)
1937 || !sk_SSL_COMP_push(ssl_comp_methods, comp)) {
1940 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE);
1949 const char *SSL_COMP_get_name(const COMP_METHOD *comp)
1951 #ifndef OPENSSL_NO_COMP
1952 return comp ? COMP_get_name(comp) : NULL;
1958 /* For a cipher return the index corresponding to the certificate type */
1959 int ssl_cipher_get_cert_index(const SSL_CIPHER *c)
1961 uint32_t alg_k, alg_a;
1963 alg_k = c->algorithm_mkey;
1964 alg_a = c->algorithm_auth;
1966 if (alg_k & (SSL_kECDHr | SSL_kECDHe)) {
1968 * we don't need to look at SSL_kECDHE since no certificate is needed
1969 * for anon ECDH and for authenticated ECDHE, the check for the auth
1970 * algorithm will set i correctly NOTE: For ECDH-RSA, we need an ECC
1971 * not an RSA cert but for ECDHE-RSA we need an RSA cert. Placing the
1972 * checks for SSL_kECDH before RSA checks ensures the correct cert is
1975 return SSL_PKEY_ECC;
1976 } else if (alg_a & SSL_aECDSA)
1977 return SSL_PKEY_ECC;
1978 else if (alg_k & SSL_kDHr)
1979 return SSL_PKEY_DH_RSA;
1980 else if (alg_k & SSL_kDHd)
1981 return SSL_PKEY_DH_DSA;
1982 else if (alg_a & SSL_aDSS)
1983 return SSL_PKEY_DSA_SIGN;
1984 else if (alg_a & SSL_aRSA)
1985 return SSL_PKEY_RSA_ENC;
1986 else if (alg_a & SSL_aGOST12)
1987 return SSL_PKEY_GOST_EC;
1988 else if (alg_a & SSL_aGOST01)
1989 return SSL_PKEY_GOST01;
1994 const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr)
1996 const SSL_CIPHER *c;
1997 c = ssl->method->get_cipher_by_char(ptr);
1998 if (c == NULL || c->valid == 0)
2003 const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr)
2005 return ssl->method->get_cipher_by_char(ptr);
2008 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c)
2013 i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc);
2016 return ssl_cipher_table_cipher[i].nid;
2019 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c)
2024 i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac);
2027 return ssl_cipher_table_mac[i].nid;