1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
57 /* ====================================================================
58 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * openssl-core@openssl.org.
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com).
110 /* ====================================================================
111 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
112 * ECC cipher suite support in OpenSSL originally developed by
113 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115 /* ====================================================================
116 * Copyright 2005 Nokia. All rights reserved.
118 * The portions of the attached software ("Contribution") is developed by
119 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
122 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
123 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
124 * support (see RFC 4279) to OpenSSL.
126 * No patent licenses or other rights except those expressly stated in
127 * the OpenSSL open source license shall be deemed granted or received
128 * expressly, by implication, estoppel, or otherwise.
130 * No assurances are provided by Nokia that the Contribution does not
131 * infringe the patent or other intellectual property rights of any third
132 * party or that the license provides you with all the necessary rights
133 * to make use of the Contribution.
135 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
136 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
137 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
138 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
143 #include <openssl/objects.h>
144 #ifndef OPENSSL_NO_COMP
145 # include <openssl/comp.h>
147 #ifndef OPENSSL_NO_ENGINE
148 # include <openssl/engine.h>
150 #include "ssl_locl.h"
152 #define SSL_ENC_DES_IDX 0
153 #define SSL_ENC_3DES_IDX 1
154 #define SSL_ENC_RC4_IDX 2
155 #define SSL_ENC_RC2_IDX 3
156 #define SSL_ENC_IDEA_IDX 4
157 #define SSL_ENC_NULL_IDX 5
158 #define SSL_ENC_AES128_IDX 6
159 #define SSL_ENC_AES256_IDX 7
160 #define SSL_ENC_CAMELLIA128_IDX 8
161 #define SSL_ENC_CAMELLIA256_IDX 9
162 #define SSL_ENC_GOST89_IDX 10
163 #define SSL_ENC_SEED_IDX 11
164 #define SSL_ENC_AES128GCM_IDX 12
165 #define SSL_ENC_AES256GCM_IDX 13
166 #define SSL_ENC_AES128CCM_IDX 14
167 #define SSL_ENC_AES256CCM_IDX 15
168 #define SSL_ENC_AES128CCM8_IDX 16
169 #define SSL_ENC_AES256CCM8_IDX 17
170 #define SSL_ENC_GOST8912_IDX 18
171 #define SSL_ENC_CHACHA_IDX 19
172 #define SSL_ENC_NUM_IDX 20
174 /* NB: make sure indices in these tables match values above */
181 /* Table of NIDs for each cipher */
182 static const ssl_cipher_table ssl_cipher_table_cipher
[SSL_ENC_NUM_IDX
] = {
183 {SSL_DES
, NID_des_cbc
}, /* SSL_ENC_DES_IDX 0 */
184 {SSL_3DES
, NID_des_ede3_cbc
}, /* SSL_ENC_3DES_IDX 1 */
185 {SSL_RC4
, NID_rc4
}, /* SSL_ENC_RC4_IDX 2 */
186 {SSL_RC2
, NID_rc2_cbc
}, /* SSL_ENC_RC2_IDX 3 */
187 {SSL_IDEA
, NID_idea_cbc
}, /* SSL_ENC_IDEA_IDX 4 */
188 {SSL_eNULL
, NID_undef
}, /* SSL_ENC_NULL_IDX 5 */
189 {SSL_AES128
, NID_aes_128_cbc
}, /* SSL_ENC_AES128_IDX 6 */
190 {SSL_AES256
, NID_aes_256_cbc
}, /* SSL_ENC_AES256_IDX 7 */
191 {SSL_CAMELLIA128
, NID_camellia_128_cbc
}, /* SSL_ENC_CAMELLIA128_IDX 8 */
192 {SSL_CAMELLIA256
, NID_camellia_256_cbc
}, /* SSL_ENC_CAMELLIA256_IDX 9 */
193 {SSL_eGOST2814789CNT
, NID_gost89_cnt
}, /* SSL_ENC_GOST89_IDX 10 */
194 {SSL_SEED
, NID_seed_cbc
}, /* SSL_ENC_SEED_IDX 11 */
195 {SSL_AES128GCM
, NID_aes_128_gcm
}, /* SSL_ENC_AES128GCM_IDX 12 */
196 {SSL_AES256GCM
, NID_aes_256_gcm
}, /* SSL_ENC_AES256GCM_IDX 13 */
197 {SSL_AES128CCM
, NID_aes_128_ccm
}, /* SSL_ENC_AES128CCM_IDX 14 */
198 {SSL_AES256CCM
, NID_aes_256_ccm
}, /* SSL_ENC_AES256CCM_IDX 15 */
199 {SSL_AES128CCM8
, NID_aes_128_ccm
}, /* SSL_ENC_AES128CCM8_IDX 16 */
200 {SSL_AES256CCM8
, NID_aes_256_ccm
}, /* SSL_ENC_AES256CCM8_IDX 17 */
201 {SSL_eGOST2814789CNT12
, NID_gost89_cnt_12
}, /* SSL_ENC_GOST8912_IDX */
202 {SSL_CHACHA20POLY1305
, NID_chacha20_poly1305
},
205 static const EVP_CIPHER
*ssl_cipher_methods
[SSL_ENC_NUM_IDX
] = {
206 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
210 #define SSL_COMP_NULL_IDX 0
211 #define SSL_COMP_ZLIB_IDX 1
212 #define SSL_COMP_NUM_IDX 2
214 static STACK_OF(SSL_COMP
) *ssl_comp_methods
= NULL
;
217 * Constant SSL_MAX_DIGEST equal to size of digests array should be defined
221 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
223 /* NB: make sure indices in this table matches values above */
224 static const ssl_cipher_table ssl_cipher_table_mac
[SSL_MD_NUM_IDX
] = {
225 {SSL_MD5
, NID_md5
}, /* SSL_MD_MD5_IDX 0 */
226 {SSL_SHA1
, NID_sha1
}, /* SSL_MD_SHA1_IDX 1 */
227 {SSL_GOST94
, NID_id_GostR3411_94
}, /* SSL_MD_GOST94_IDX 2 */
228 {SSL_GOST89MAC
, NID_id_Gost28147_89_MAC
}, /* SSL_MD_GOST89MAC_IDX 3 */
229 {SSL_SHA256
, NID_sha256
}, /* SSL_MD_SHA256_IDX 4 */
230 {SSL_SHA384
, NID_sha384
}, /* SSL_MD_SHA384_IDX 5 */
231 {SSL_GOST12_256
, NID_id_GostR3411_2012_256
}, /* SSL_MD_GOST12_256_IDX 6 */
232 {SSL_GOST89MAC12
, NID_gost_mac_12
}, /* SSL_MD_GOST89MAC12_IDX 7 */
233 {SSL_GOST12_512
, NID_id_GostR3411_2012_512
}, /* SSL_MD_GOST12_512_IDX 8 */
234 {0, NID_md5_sha1
}, /* SSL_MD_MD5_SHA1_IDX 9 */
235 {0, NID_sha224
}, /* SSL_MD_SHA224_IDX 10 */
236 {0, NID_sha512
} /* SSL_MD_SHA512_IDX 11 */
239 static const EVP_MD
*ssl_digest_methods
[SSL_MD_NUM_IDX
] = {
240 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
243 /* Utility function for table lookup */
244 static int ssl_cipher_info_find(const ssl_cipher_table
* table
,
245 size_t table_cnt
, uint32_t mask
)
248 for (i
= 0; i
< table_cnt
; i
++, table
++) {
249 if (table
->mask
== mask
)
255 #define ssl_cipher_info_lookup(table, x) \
256 ssl_cipher_info_find(table, OSSL_NELEM(table), x)
259 * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation
260 * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is
263 static int ssl_mac_pkey_id
[SSL_MD_NUM_IDX
] = {
264 /* MD5, SHA, GOST94, MAC89 */
265 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, NID_undef
,
266 /* SHA256, SHA384, GOST2012_256, MAC89-12 */
267 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, NID_undef
,
272 static int ssl_mac_secret_size
[SSL_MD_NUM_IDX
] = {
273 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
277 #define CIPHER_KILL 2
280 #define CIPHER_SPECIAL 5
282 typedef struct cipher_order_st
{
283 const SSL_CIPHER
*cipher
;
286 struct cipher_order_st
*next
, *prev
;
289 static const SSL_CIPHER cipher_aliases
[] = {
290 /* "ALL" doesn't include eNULL (must be specifically enabled) */
291 {0, SSL_TXT_ALL
, 0, 0, 0, ~SSL_eNULL
, 0, 0, 0, 0, 0, 0},
292 /* "COMPLEMENTOFALL" */
293 {0, SSL_TXT_CMPALL
, 0, 0, 0, SSL_eNULL
, 0, 0, 0, 0, 0, 0},
296 * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in
299 {0, SSL_TXT_CMPDEF
, 0, 0, 0, ~SSL_eNULL
, 0, 0, SSL_NOT_DEFAULT
, 0, 0, 0},
302 * key exchange aliases (some of those using only a single bit here
303 * combine multiple key exchange algs according to the RFCs, e.g. kDHE
304 * combines DHE_DSS and DHE_RSA)
306 {0, SSL_TXT_kRSA
, 0, SSL_kRSA
, 0, 0, 0, 0, 0, 0, 0, 0},
308 {0, SSL_TXT_kEDH
, 0, SSL_kDHE
, 0, 0, 0, 0, 0, 0, 0, 0},
309 {0, SSL_TXT_kDHE
, 0, SSL_kDHE
, 0, 0, 0, 0, 0, 0, 0, 0},
310 {0, SSL_TXT_DH
, 0, SSL_kDHE
, 0, 0, 0, 0, 0, 0, 0,
313 {0, SSL_TXT_kEECDH
, 0, SSL_kECDHE
, 0, 0, 0, 0, 0, 0, 0, 0},
314 {0, SSL_TXT_kECDHE
, 0, SSL_kECDHE
, 0, 0, 0, 0, 0, 0, 0, 0},
315 {0, SSL_TXT_ECDH
, 0, SSL_kECDHE
, 0, 0, 0, 0, 0,
318 {0, SSL_TXT_kPSK
, 0, SSL_kPSK
, 0, 0, 0, 0, 0, 0, 0, 0},
319 {0, SSL_TXT_kRSAPSK
, 0, SSL_kRSAPSK
, 0, 0, 0, 0, 0, 0, 0, 0},
320 {0, SSL_TXT_kECDHEPSK
, 0, SSL_kECDHEPSK
, 0, 0, 0, 0, 0, 0, 0, 0},
321 {0, SSL_TXT_kDHEPSK
, 0, SSL_kDHEPSK
, 0, 0, 0, 0, 0, 0, 0, 0},
322 {0, SSL_TXT_kSRP
, 0, SSL_kSRP
, 0, 0, 0, 0, 0, 0, 0, 0},
323 {0, SSL_TXT_kGOST
, 0, SSL_kGOST
, 0, 0, 0, 0, 0, 0, 0, 0},
325 /* server authentication aliases */
326 {0, SSL_TXT_aRSA
, 0, 0, SSL_aRSA
, 0, 0, 0, 0, 0, 0, 0},
327 {0, SSL_TXT_aDSS
, 0, 0, SSL_aDSS
, 0, 0, 0, 0, 0, 0, 0},
328 {0, SSL_TXT_DSS
, 0, 0, SSL_aDSS
, 0, 0, 0, 0, 0, 0, 0},
329 {0, SSL_TXT_aNULL
, 0, 0, SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
330 {0, SSL_TXT_aECDSA
, 0, 0, SSL_aECDSA
, 0, 0, 0, 0, 0, 0, 0},
331 {0, SSL_TXT_ECDSA
, 0, 0, SSL_aECDSA
, 0, 0, 0, 0, 0, 0, 0},
332 {0, SSL_TXT_aPSK
, 0, 0, SSL_aPSK
, 0, 0, 0, 0, 0, 0, 0},
333 {0, SSL_TXT_aGOST01
, 0, 0, SSL_aGOST01
, 0, 0, 0, 0, 0, 0, 0},
334 {0, SSL_TXT_aGOST12
, 0, 0, SSL_aGOST12
, 0, 0, 0, 0, 0, 0, 0},
335 {0, SSL_TXT_aGOST
, 0, 0, SSL_aGOST01
| SSL_aGOST12
, 0, 0, 0,
337 {0, SSL_TXT_aSRP
, 0, 0, SSL_aSRP
, 0, 0, 0, 0, 0, 0, 0},
339 /* aliases combining key exchange and server authentication */
340 {0, SSL_TXT_EDH
, 0, SSL_kDHE
, ~SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
341 {0, SSL_TXT_DHE
, 0, SSL_kDHE
, ~SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
342 {0, SSL_TXT_EECDH
, 0, SSL_kECDHE
, ~SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
343 {0, SSL_TXT_ECDHE
, 0, SSL_kECDHE
, ~SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
344 {0, SSL_TXT_NULL
, 0, 0, 0, SSL_eNULL
, 0, 0, 0, 0, 0, 0},
345 {0, SSL_TXT_RSA
, 0, SSL_kRSA
, SSL_aRSA
, 0, 0, 0, 0, 0, 0, 0},
346 {0, SSL_TXT_ADH
, 0, SSL_kDHE
, SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
347 {0, SSL_TXT_AECDH
, 0, SSL_kECDHE
, SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
348 {0, SSL_TXT_PSK
, 0, SSL_PSK
, 0, 0, 0, 0, 0, 0, 0, 0},
349 {0, SSL_TXT_SRP
, 0, SSL_kSRP
, 0, 0, 0, 0, 0, 0, 0, 0},
351 /* symmetric encryption aliases */
352 {0, SSL_TXT_DES
, 0, 0, 0, SSL_DES
, 0, 0, 0, 0, 0, 0},
353 {0, SSL_TXT_3DES
, 0, 0, 0, SSL_3DES
, 0, 0, 0, 0, 0, 0},
354 {0, SSL_TXT_RC4
, 0, 0, 0, SSL_RC4
, 0, 0, 0, 0, 0, 0},
355 {0, SSL_TXT_RC2
, 0, 0, 0, SSL_RC2
, 0, 0, 0, 0, 0, 0},
356 {0, SSL_TXT_IDEA
, 0, 0, 0, SSL_IDEA
, 0, 0, 0, 0, 0, 0},
357 {0, SSL_TXT_SEED
, 0, 0, 0, SSL_SEED
, 0, 0, 0, 0, 0, 0},
358 {0, SSL_TXT_eNULL
, 0, 0, 0, SSL_eNULL
, 0, 0, 0, 0, 0, 0},
359 {0, SSL_TXT_GOST
, 0, 0, 0, SSL_eGOST2814789CNT
| SSL_eGOST2814789CNT12
, 0,
361 {0, SSL_TXT_AES128
, 0, 0, 0, SSL_AES128
| SSL_AES128GCM
| SSL_AES128CCM
| SSL_AES128CCM8
, 0,
363 {0, SSL_TXT_AES256
, 0, 0, 0, SSL_AES256
| SSL_AES256GCM
| SSL_AES256CCM
| SSL_AES256CCM8
, 0,
365 {0, SSL_TXT_AES
, 0, 0, 0, SSL_AES
, 0, 0, 0, 0, 0, 0},
366 {0, SSL_TXT_AES_GCM
, 0, 0, 0, SSL_AES128GCM
| SSL_AES256GCM
, 0, 0, 0, 0,
368 {0, SSL_TXT_AES_CCM
, 0, 0, 0, SSL_AES128CCM
| SSL_AES256CCM
| SSL_AES128CCM8
| SSL_AES256CCM8
, 0, 0, 0, 0,
370 {0, SSL_TXT_AES_CCM_8
, 0, 0, 0, SSL_AES128CCM8
| SSL_AES256CCM8
, 0, 0, 0, 0,
372 {0, SSL_TXT_CAMELLIA128
, 0, 0, 0, SSL_CAMELLIA128
, 0, 0, 0, 0, 0, 0},
373 {0, SSL_TXT_CAMELLIA256
, 0, 0, 0, SSL_CAMELLIA256
, 0, 0, 0, 0, 0, 0},
374 {0, SSL_TXT_CAMELLIA
, 0, 0, 0, SSL_CAMELLIA
, 0, 0, 0, 0, 0, 0},
375 {0, SSL_TXT_CHACHA20
, 0, 0, 0, SSL_CHACHA20
, 0, 0, 0, 0, 0, 0 },
378 {0, SSL_TXT_MD5
, 0, 0, 0, 0, SSL_MD5
, 0, 0, 0, 0, 0},
379 {0, SSL_TXT_SHA1
, 0, 0, 0, 0, SSL_SHA1
, 0, 0, 0, 0, 0},
380 {0, SSL_TXT_SHA
, 0, 0, 0, 0, SSL_SHA1
, 0, 0, 0, 0, 0},
381 {0, SSL_TXT_GOST94
, 0, 0, 0, 0, SSL_GOST94
, 0, 0, 0, 0, 0},
382 {0, SSL_TXT_GOST89MAC
, 0, 0, 0, 0, SSL_GOST89MAC
| SSL_GOST89MAC12
, 0, 0,
384 {0, SSL_TXT_SHA256
, 0, 0, 0, 0, SSL_SHA256
, 0, 0, 0, 0, 0},
385 {0, SSL_TXT_SHA384
, 0, 0, 0, 0, SSL_SHA384
, 0, 0, 0, 0, 0},
386 {0, SSL_TXT_GOST12
, 0, 0, 0, 0, SSL_GOST12_256
, 0, 0, 0, 0, 0},
388 /* protocol version aliases */
389 {0, SSL_TXT_SSLV3
, 0, 0, 0, 0, 0, SSL_SSLV3
, 0, 0, 0, 0},
390 {0, SSL_TXT_TLSV1
, 0, 0, 0, 0, 0, SSL_SSLV3
, 0, 0, 0, 0},
391 {0, "TLSv1.0", 0, 0, 0, 0, 0, SSL_TLSV1
, 0, 0, 0, 0},
392 {0, SSL_TXT_TLSV1_2
, 0, 0, 0, 0, 0, SSL_TLSV1_2
, 0, 0, 0, 0},
394 /* strength classes */
395 {0, SSL_TXT_LOW
, 0, 0, 0, 0, 0, 0, SSL_LOW
, 0, 0, 0},
396 {0, SSL_TXT_MEDIUM
, 0, 0, 0, 0, 0, 0, SSL_MEDIUM
, 0, 0, 0},
397 {0, SSL_TXT_HIGH
, 0, 0, 0, 0, 0, 0, SSL_HIGH
, 0, 0, 0},
398 /* FIPS 140-2 approved ciphersuite */
399 {0, SSL_TXT_FIPS
, 0, 0, 0, ~SSL_eNULL
, 0, 0, SSL_FIPS
, 0, 0, 0},
401 /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */
402 {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA
, 0,
403 SSL_kDHE
, SSL_aDSS
, SSL_3DES
, SSL_SHA1
, SSL_SSLV3
,
404 SSL_HIGH
| SSL_FIPS
, 0, 0, 0,},
405 {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA
, 0,
406 SSL_kDHE
, SSL_aRSA
, SSL_3DES
, SSL_SHA1
, SSL_SSLV3
,
407 SSL_HIGH
| SSL_FIPS
, 0, 0, 0,},
412 * Search for public key algorithm with given name and return its pkey_id if
413 * it is available. Otherwise return 0
415 #ifdef OPENSSL_NO_ENGINE
417 static int get_optional_pkey_id(const char *pkey_name
)
419 const EVP_PKEY_ASN1_METHOD
*ameth
;
421 ameth
= EVP_PKEY_asn1_find_str(NULL
, pkey_name
, -1);
422 if (ameth
&& EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
,
431 static int get_optional_pkey_id(const char *pkey_name
)
433 const EVP_PKEY_ASN1_METHOD
*ameth
;
434 ENGINE
*tmpeng
= NULL
;
436 ameth
= EVP_PKEY_asn1_find_str(&tmpeng
, pkey_name
, -1);
438 if (EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
,
443 ENGINE_finish(tmpeng
);
449 /* masks of disabled algorithms */
450 static uint32_t disabled_enc_mask
;
451 static uint32_t disabled_mac_mask
;
452 static uint32_t disabled_mkey_mask
;
453 static uint32_t disabled_auth_mask
;
455 void ssl_load_ciphers(void)
458 const ssl_cipher_table
*t
;
459 disabled_enc_mask
= 0;
460 for (i
= 0, t
= ssl_cipher_table_cipher
; i
< SSL_ENC_NUM_IDX
; i
++, t
++) {
461 if (t
->nid
== NID_undef
) {
462 ssl_cipher_methods
[i
] = NULL
;
464 const EVP_CIPHER
*cipher
= EVP_get_cipherbynid(t
->nid
);
465 ssl_cipher_methods
[i
] = cipher
;
467 disabled_enc_mask
|= t
->mask
;
470 #ifdef SSL_FORBID_ENULL
471 disabled_enc_mask
|= SSL_eNULL
;
473 disabled_mac_mask
= 0;
474 for (i
= 0, t
= ssl_cipher_table_mac
; i
< SSL_MD_NUM_IDX
; i
++, t
++) {
475 const EVP_MD
*md
= EVP_get_digestbynid(t
->nid
);
476 ssl_digest_methods
[i
] = md
;
478 disabled_mac_mask
|= t
->mask
;
480 ssl_mac_secret_size
[i
] = EVP_MD_size(md
);
481 OPENSSL_assert(ssl_mac_secret_size
[i
] >= 0);
484 /* Make sure we can access MD5 and SHA1 */
485 OPENSSL_assert(ssl_digest_methods
[SSL_MD_MD5_IDX
] != NULL
);
486 OPENSSL_assert(ssl_digest_methods
[SSL_MD_SHA1_IDX
] != NULL
);
488 disabled_mkey_mask
= 0;
489 disabled_auth_mask
= 0;
491 #ifdef OPENSSL_NO_RSA
492 disabled_mkey_mask
|= SSL_kRSA
| SSL_kRSAPSK
;
493 disabled_auth_mask
|= SSL_aRSA
;
495 #ifdef OPENSSL_NO_DSA
496 disabled_auth_mask
|= SSL_aDSS
;
499 disabled_mkey_mask
|= SSL_kDHE
| SSL_kDHEPSK
;
502 disabled_mkey_mask
|= SSL_kECDHEPSK
;
503 disabled_auth_mask
|= SSL_aECDSA
;
505 #ifdef OPENSSL_NO_PSK
506 disabled_mkey_mask
|= SSL_PSK
;
507 disabled_auth_mask
|= SSL_aPSK
;
509 #ifdef OPENSSL_NO_SRP
510 disabled_mkey_mask
|= SSL_kSRP
;
514 * Check for presence of GOST 34.10 algorithms, and if they are not
515 * present, disable appropriate auth and key exchange
517 ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
] = get_optional_pkey_id("gost-mac");
518 if (ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
]) {
519 ssl_mac_secret_size
[SSL_MD_GOST89MAC_IDX
] = 32;
521 disabled_mac_mask
|= SSL_GOST89MAC
;
524 ssl_mac_pkey_id
[SSL_MD_GOST89MAC12_IDX
] = get_optional_pkey_id("gost-mac-12");
525 if (ssl_mac_pkey_id
[SSL_MD_GOST89MAC12_IDX
]) {
526 ssl_mac_secret_size
[SSL_MD_GOST89MAC12_IDX
] = 32;
528 disabled_mac_mask
|= SSL_GOST89MAC12
;
531 if (!get_optional_pkey_id("gost2001"))
532 disabled_auth_mask
|= SSL_aGOST01
| SSL_aGOST12
;
533 if (!get_optional_pkey_id("gost2012_256"))
534 disabled_auth_mask
|= SSL_aGOST12
;
535 if (!get_optional_pkey_id("gost2012_512"))
536 disabled_auth_mask
|= SSL_aGOST12
;
538 * Disable GOST key exchange if no GOST signature algs are available *
540 if ((disabled_auth_mask
& (SSL_aGOST01
| SSL_aGOST12
)) == (SSL_aGOST01
| SSL_aGOST12
))
541 disabled_mkey_mask
|= SSL_kGOST
;
544 #ifndef OPENSSL_NO_COMP
546 static int sk_comp_cmp(const SSL_COMP
*const *a
, const SSL_COMP
*const *b
)
548 return ((*a
)->id
- (*b
)->id
);
551 static void load_builtin_compressions(void)
553 int got_write_lock
= 0;
555 CRYPTO_r_lock(CRYPTO_LOCK_SSL
);
556 if (ssl_comp_methods
== NULL
) {
557 CRYPTO_r_unlock(CRYPTO_LOCK_SSL
);
558 CRYPTO_w_lock(CRYPTO_LOCK_SSL
);
561 if (ssl_comp_methods
== NULL
) {
562 SSL_COMP
*comp
= NULL
;
563 COMP_METHOD
*method
= COMP_zlib();
565 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE
);
566 ssl_comp_methods
= sk_SSL_COMP_new(sk_comp_cmp
);
567 if (COMP_get_type(method
) != NID_undef
568 && ssl_comp_methods
!= NULL
) {
569 comp
= OPENSSL_malloc(sizeof(*comp
));
571 comp
->method
= method
;
572 comp
->id
= SSL_COMP_ZLIB_IDX
;
573 comp
->name
= COMP_get_name(method
);
574 sk_SSL_COMP_push(ssl_comp_methods
, comp
);
575 sk_SSL_COMP_sort(ssl_comp_methods
);
578 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE
);
583 CRYPTO_w_unlock(CRYPTO_LOCK_SSL
);
585 CRYPTO_r_unlock(CRYPTO_LOCK_SSL
);
589 int ssl_cipher_get_evp(const SSL_SESSION
*s
, const EVP_CIPHER
**enc
,
590 const EVP_MD
**md
, int *mac_pkey_type
,
591 int *mac_secret_size
, SSL_COMP
**comp
, int use_etm
)
601 #ifndef OPENSSL_NO_COMP
602 load_builtin_compressions();
606 ctmp
.id
= s
->compress_meth
;
607 if (ssl_comp_methods
!= NULL
) {
608 i
= sk_SSL_COMP_find(ssl_comp_methods
, &ctmp
);
610 *comp
= sk_SSL_COMP_value(ssl_comp_methods
, i
);
614 /* If were only interested in comp then return success */
615 if ((enc
== NULL
) && (md
== NULL
))
619 if ((enc
== NULL
) || (md
== NULL
))
622 i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, c
->algorithm_enc
);
627 if (i
== SSL_ENC_NULL_IDX
)
628 *enc
= EVP_enc_null();
630 *enc
= ssl_cipher_methods
[i
];
633 i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
636 if (mac_pkey_type
!= NULL
)
637 *mac_pkey_type
= NID_undef
;
638 if (mac_secret_size
!= NULL
)
639 *mac_secret_size
= 0;
640 if (c
->algorithm_mac
== SSL_AEAD
)
641 mac_pkey_type
= NULL
;
643 *md
= ssl_digest_methods
[i
];
644 if (mac_pkey_type
!= NULL
)
645 *mac_pkey_type
= ssl_mac_pkey_id
[i
];
646 if (mac_secret_size
!= NULL
)
647 *mac_secret_size
= ssl_mac_secret_size
[i
];
650 if ((*enc
!= NULL
) &&
651 (*md
!= NULL
|| (EVP_CIPHER_flags(*enc
) & EVP_CIPH_FLAG_AEAD_CIPHER
))
652 && (!mac_pkey_type
|| *mac_pkey_type
!= NID_undef
)) {
653 const EVP_CIPHER
*evp
;
658 if (s
->ssl_version
>> 8 != TLS1_VERSION_MAJOR
||
659 s
->ssl_version
< TLS1_VERSION
)
665 if (c
->algorithm_enc
== SSL_RC4
&&
666 c
->algorithm_mac
== SSL_MD5
&&
667 (evp
= EVP_get_cipherbyname("RC4-HMAC-MD5")))
668 *enc
= evp
, *md
= NULL
;
669 else if (c
->algorithm_enc
== SSL_AES128
&&
670 c
->algorithm_mac
== SSL_SHA1
&&
671 (evp
= EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
672 *enc
= evp
, *md
= NULL
;
673 else if (c
->algorithm_enc
== SSL_AES256
&&
674 c
->algorithm_mac
== SSL_SHA1
&&
675 (evp
= EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
676 *enc
= evp
, *md
= NULL
;
677 else if (c
->algorithm_enc
== SSL_AES128
&&
678 c
->algorithm_mac
== SSL_SHA256
&&
679 (evp
= EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA256")))
680 *enc
= evp
, *md
= NULL
;
681 else if (c
->algorithm_enc
== SSL_AES256
&&
682 c
->algorithm_mac
== SSL_SHA256
&&
683 (evp
= EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA256")))
684 *enc
= evp
, *md
= NULL
;
690 const EVP_MD
*ssl_md(int idx
)
692 idx
&= SSL_HANDSHAKE_MAC_MASK
;
693 if (idx
< 0 || idx
>= SSL_MD_NUM_IDX
)
695 return ssl_digest_methods
[idx
];
698 const EVP_MD
*ssl_handshake_md(SSL
*s
)
700 return ssl_md(ssl_get_algorithm2(s
));
703 const EVP_MD
*ssl_prf_md(SSL
*s
)
705 return ssl_md(ssl_get_algorithm2(s
) >> TLS1_PRF_DGST_SHIFT
);
708 #define ITEM_SEP(a) \
709 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
711 static void ll_append_tail(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
718 if (curr
->prev
!= NULL
)
719 curr
->prev
->next
= curr
->next
;
720 if (curr
->next
!= NULL
)
721 curr
->next
->prev
= curr
->prev
;
722 (*tail
)->next
= curr
;
728 static void ll_append_head(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
735 if (curr
->next
!= NULL
)
736 curr
->next
->prev
= curr
->prev
;
737 if (curr
->prev
!= NULL
)
738 curr
->prev
->next
= curr
->next
;
739 (*head
)->prev
= curr
;
745 static void ssl_cipher_collect_ciphers(const SSL_METHOD
*ssl_method
,
747 uint32_t disabled_mkey
,
748 uint32_t disabled_auth
,
749 uint32_t disabled_enc
,
750 uint32_t disabled_mac
,
751 uint32_t disabled_ssl
,
752 CIPHER_ORDER
*co_list
,
753 CIPHER_ORDER
**head_p
,
754 CIPHER_ORDER
**tail_p
)
760 * We have num_of_ciphers descriptions compiled in, depending on the
761 * method selected (SSLv3, TLSv1 etc).
762 * These will later be sorted in a linked list with at most num
766 /* Get the initial list of ciphers */
767 co_list_num
= 0; /* actual count of ciphers */
768 for (i
= 0; i
< num_of_ciphers
; i
++) {
769 c
= ssl_method
->get_cipher(i
);
770 /* drop those that use any of that is not available */
771 if ((c
!= NULL
) && c
->valid
&&
772 (!FIPS_mode() || (c
->algo_strength
& SSL_FIPS
)) &&
773 !(c
->algorithm_mkey
& disabled_mkey
) &&
774 !(c
->algorithm_auth
& disabled_auth
) &&
775 !(c
->algorithm_enc
& disabled_enc
) &&
776 !(c
->algorithm_mac
& disabled_mac
) &&
777 !(c
->algorithm_ssl
& disabled_ssl
)) {
778 co_list
[co_list_num
].cipher
= c
;
779 co_list
[co_list_num
].next
= NULL
;
780 co_list
[co_list_num
].prev
= NULL
;
781 co_list
[co_list_num
].active
= 0;
784 * if (!sk_push(ca_list,(char *)c)) goto err;
790 * Prepare linked list from list entries
792 if (co_list_num
> 0) {
793 co_list
[0].prev
= NULL
;
795 if (co_list_num
> 1) {
796 co_list
[0].next
= &co_list
[1];
798 for (i
= 1; i
< co_list_num
- 1; i
++) {
799 co_list
[i
].prev
= &co_list
[i
- 1];
800 co_list
[i
].next
= &co_list
[i
+ 1];
803 co_list
[co_list_num
- 1].prev
= &co_list
[co_list_num
- 2];
806 co_list
[co_list_num
- 1].next
= NULL
;
808 *head_p
= &co_list
[0];
809 *tail_p
= &co_list
[co_list_num
- 1];
813 static void ssl_cipher_collect_aliases(const SSL_CIPHER
**ca_list
,
814 int num_of_group_aliases
,
815 uint32_t disabled_mkey
,
816 uint32_t disabled_auth
,
817 uint32_t disabled_enc
,
818 uint32_t disabled_mac
,
819 uint32_t disabled_ssl
,
822 CIPHER_ORDER
*ciph_curr
;
823 const SSL_CIPHER
**ca_curr
;
825 uint32_t mask_mkey
= ~disabled_mkey
;
826 uint32_t mask_auth
= ~disabled_auth
;
827 uint32_t mask_enc
= ~disabled_enc
;
828 uint32_t mask_mac
= ~disabled_mac
;
829 uint32_t mask_ssl
= ~disabled_ssl
;
832 * First, add the real ciphers as already collected
836 while (ciph_curr
!= NULL
) {
837 *ca_curr
= ciph_curr
->cipher
;
839 ciph_curr
= ciph_curr
->next
;
843 * Now we add the available ones from the cipher_aliases[] table.
844 * They represent either one or more algorithms, some of which
845 * in any affected category must be supported (set in enabled_mask),
846 * or represent a cipher strength value (will be added in any case because algorithms=0).
848 for (i
= 0; i
< num_of_group_aliases
; i
++) {
849 uint32_t algorithm_mkey
= cipher_aliases
[i
].algorithm_mkey
;
850 uint32_t algorithm_auth
= cipher_aliases
[i
].algorithm_auth
;
851 uint32_t algorithm_enc
= cipher_aliases
[i
].algorithm_enc
;
852 uint32_t algorithm_mac
= cipher_aliases
[i
].algorithm_mac
;
853 uint32_t algorithm_ssl
= cipher_aliases
[i
].algorithm_ssl
;
856 if ((algorithm_mkey
& mask_mkey
) == 0)
860 if ((algorithm_auth
& mask_auth
) == 0)
864 if ((algorithm_enc
& mask_enc
) == 0)
868 if ((algorithm_mac
& mask_mac
) == 0)
872 if ((algorithm_ssl
& mask_ssl
) == 0)
875 *ca_curr
= (SSL_CIPHER
*)(cipher_aliases
+ i
);
879 *ca_curr
= NULL
; /* end of list */
882 static void ssl_cipher_apply_rule(uint32_t cipher_id
, uint32_t alg_mkey
,
883 uint32_t alg_auth
, uint32_t alg_enc
,
884 uint32_t alg_mac
, uint32_t alg_ssl
,
885 uint32_t algo_strength
, int rule
,
886 int32_t strength_bits
, CIPHER_ORDER
**head_p
,
887 CIPHER_ORDER
**tail_p
)
889 CIPHER_ORDER
*head
, *tail
, *curr
, *next
, *last
;
890 const SSL_CIPHER
*cp
;
895 "Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
896 rule
, alg_mkey
, alg_auth
, alg_enc
, alg_mac
, alg_ssl
,
897 algo_strength
, strength_bits
);
900 if (rule
== CIPHER_DEL
)
901 reverse
= 1; /* needed to maintain sorting between
902 * currently deleted ciphers */
925 next
= reverse
? curr
->prev
: curr
->next
;
930 * Selection criteria is either the value of strength_bits
931 * or the algorithms used.
933 if (strength_bits
>= 0) {
934 if (strength_bits
!= cp
->strength_bits
)
939 "\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n",
940 cp
->name
, cp
->algorithm_mkey
, cp
->algorithm_auth
,
941 cp
->algorithm_enc
, cp
->algorithm_mac
, cp
->algorithm_ssl
,
944 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
945 if (cipher_id
&& cipher_id
!= cp
->id
)
948 if (alg_mkey
&& !(alg_mkey
& cp
->algorithm_mkey
))
950 if (alg_auth
&& !(alg_auth
& cp
->algorithm_auth
))
952 if (alg_enc
&& !(alg_enc
& cp
->algorithm_enc
))
954 if (alg_mac
&& !(alg_mac
& cp
->algorithm_mac
))
956 if (alg_ssl
&& !(alg_ssl
& cp
->algorithm_ssl
))
958 if (algo_strength
&& !(algo_strength
& cp
->algo_strength
))
960 if ((algo_strength
& SSL_DEFAULT_MASK
)
961 && !(algo_strength
& SSL_DEFAULT_MASK
& cp
->algo_strength
))
966 fprintf(stderr
, "Action = %d\n", rule
);
969 /* add the cipher if it has not been added yet. */
970 if (rule
== CIPHER_ADD
) {
973 ll_append_tail(&head
, curr
, &tail
);
977 /* Move the added cipher to this location */
978 else if (rule
== CIPHER_ORD
) {
981 ll_append_tail(&head
, curr
, &tail
);
983 } else if (rule
== CIPHER_DEL
) {
987 * most recently deleted ciphersuites get best positions for
988 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
989 * in reverse to maintain the order)
991 ll_append_head(&head
, curr
, &tail
);
994 } else if (rule
== CIPHER_KILL
) {
999 curr
->prev
->next
= curr
->next
;
1003 if (curr
->next
!= NULL
)
1004 curr
->next
->prev
= curr
->prev
;
1005 if (curr
->prev
!= NULL
)
1006 curr
->prev
->next
= curr
->next
;
1016 static int ssl_cipher_strength_sort(CIPHER_ORDER
**head_p
,
1017 CIPHER_ORDER
**tail_p
)
1019 int32_t max_strength_bits
;
1020 int i
, *number_uses
;
1024 * This routine sorts the ciphers with descending strength. The sorting
1025 * must keep the pre-sorted sequence, so we apply the normal sorting
1026 * routine as '+' movement to the end of the list.
1028 max_strength_bits
= 0;
1030 while (curr
!= NULL
) {
1031 if (curr
->active
&& (curr
->cipher
->strength_bits
> max_strength_bits
))
1032 max_strength_bits
= curr
->cipher
->strength_bits
;
1036 number_uses
= OPENSSL_zalloc(sizeof(int) * (max_strength_bits
+ 1));
1037 if (number_uses
== NULL
) {
1038 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT
, ERR_R_MALLOC_FAILURE
);
1043 * Now find the strength_bits values actually used
1046 while (curr
!= NULL
) {
1048 number_uses
[curr
->cipher
->strength_bits
]++;
1052 * Go through the list of used strength_bits values in descending
1055 for (i
= max_strength_bits
; i
>= 0; i
--)
1056 if (number_uses
[i
] > 0)
1057 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD
, i
, head_p
,
1060 OPENSSL_free(number_uses
);
1064 static int ssl_cipher_process_rulestr(const char *rule_str
,
1065 CIPHER_ORDER
**head_p
,
1066 CIPHER_ORDER
**tail_p
,
1067 const SSL_CIPHER
**ca_list
, CERT
*c
)
1069 uint32_t alg_mkey
, alg_auth
, alg_enc
, alg_mac
, alg_ssl
, algo_strength
;
1070 const char *l
, *buf
;
1071 int j
, multi
, found
, rule
, retval
, ok
, buflen
;
1072 uint32_t cipher_id
= 0;
1085 } else if (ch
== '+') {
1088 } else if (ch
== '!') {
1091 } else if (ch
== '@') {
1092 rule
= CIPHER_SPECIAL
;
1114 #ifndef CHARSET_EBCDIC
1115 while (((ch
>= 'A') && (ch
<= 'Z')) ||
1116 ((ch
>= '0') && (ch
<= '9')) ||
1117 ((ch
>= 'a') && (ch
<= 'z')) ||
1118 (ch
== '-') || (ch
== '.') || (ch
== '='))
1120 while (isalnum(ch
) || (ch
== '-') || (ch
== '.') || (ch
== '='))
1129 * We hit something we cannot deal with,
1130 * it is no command or separator nor
1131 * alphanumeric, so we call this an error.
1133 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
1134 SSL_R_INVALID_COMMAND
);
1140 if (rule
== CIPHER_SPECIAL
) {
1141 found
= 0; /* unused -- avoid compiler warning */
1142 break; /* special treatment */
1145 /* check for multi-part specification */
1153 * Now search for the cipher alias in the ca_list. Be careful
1154 * with the strncmp, because the "buflen" limitation
1155 * will make the rule "ADH:SOME" and the cipher
1156 * "ADH-MY-CIPHER" look like a match for buflen=3.
1157 * So additionally check whether the cipher name found
1158 * has the correct length. We can save a strlen() call:
1159 * just checking for the '\0' at the right place is
1160 * sufficient, we have to strncmp() anyway. (We cannot
1161 * use strcmp(), because buf is not '\0' terminated.)
1165 while (ca_list
[j
]) {
1166 if (strncmp(buf
, ca_list
[j
]->name
, buflen
) == 0
1167 && (ca_list
[j
]->name
[buflen
] == '\0')) {
1175 break; /* ignore this entry */
1177 if (ca_list
[j
]->algorithm_mkey
) {
1179 alg_mkey
&= ca_list
[j
]->algorithm_mkey
;
1185 alg_mkey
= ca_list
[j
]->algorithm_mkey
;
1188 if (ca_list
[j
]->algorithm_auth
) {
1190 alg_auth
&= ca_list
[j
]->algorithm_auth
;
1196 alg_auth
= ca_list
[j
]->algorithm_auth
;
1199 if (ca_list
[j
]->algorithm_enc
) {
1201 alg_enc
&= ca_list
[j
]->algorithm_enc
;
1207 alg_enc
= ca_list
[j
]->algorithm_enc
;
1210 if (ca_list
[j
]->algorithm_mac
) {
1212 alg_mac
&= ca_list
[j
]->algorithm_mac
;
1218 alg_mac
= ca_list
[j
]->algorithm_mac
;
1221 if (ca_list
[j
]->algo_strength
) {
1222 if (algo_strength
) {
1223 algo_strength
&= ca_list
[j
]->algo_strength
;
1224 if (!algo_strength
) {
1229 algo_strength
= ca_list
[j
]->algo_strength
;
1232 if (ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
) {
1233 if (algo_strength
& SSL_DEFAULT_MASK
) {
1235 (ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
) |
1237 if (!(algo_strength
& SSL_DEFAULT_MASK
)) {
1243 ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
;
1246 if (ca_list
[j
]->valid
) {
1248 * explicit ciphersuite found; its protocol version does not
1249 * become part of the search pattern!
1252 cipher_id
= ca_list
[j
]->id
;
1255 * not an explicit ciphersuite; only in this case, the
1256 * protocol version is considered part of the search pattern
1259 if (ca_list
[j
]->algorithm_ssl
) {
1261 alg_ssl
&= ca_list
[j
]->algorithm_ssl
;
1267 alg_ssl
= ca_list
[j
]->algorithm_ssl
;
1276 * Ok, we have the rule, now apply it
1278 if (rule
== CIPHER_SPECIAL
) { /* special command */
1280 if ((buflen
== 8) && strncmp(buf
, "STRENGTH", 8) == 0)
1281 ok
= ssl_cipher_strength_sort(head_p
, tail_p
);
1282 else if (buflen
== 10 && strncmp(buf
, "SECLEVEL=", 9) == 0) {
1283 int level
= buf
[9] - '0';
1284 if (level
< 0 || level
> 5) {
1285 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
1286 SSL_R_INVALID_COMMAND
);
1288 c
->sec_level
= level
;
1292 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
1293 SSL_R_INVALID_COMMAND
);
1297 * We do not support any "multi" options
1298 * together with "@", so throw away the
1299 * rest of the command, if any left, until
1300 * end or ':' is found.
1302 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1305 ssl_cipher_apply_rule(cipher_id
,
1306 alg_mkey
, alg_auth
, alg_enc
, alg_mac
,
1307 alg_ssl
, algo_strength
, rule
, -1, head_p
,
1310 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1320 #ifndef OPENSSL_NO_EC
1321 static int check_suiteb_cipher_list(const SSL_METHOD
*meth
, CERT
*c
,
1322 const char **prule_str
)
1324 unsigned int suiteb_flags
= 0, suiteb_comb2
= 0;
1325 if (strncmp(*prule_str
, "SUITEB128ONLY", 13) == 0) {
1326 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS_ONLY
;
1327 } else if (strncmp(*prule_str
, "SUITEB128C2", 11) == 0) {
1329 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1330 } else if (strncmp(*prule_str
, "SUITEB128", 9) == 0) {
1331 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1332 } else if (strncmp(*prule_str
, "SUITEB192", 9) == 0) {
1333 suiteb_flags
= SSL_CERT_FLAG_SUITEB_192_LOS
;
1337 c
->cert_flags
&= ~SSL_CERT_FLAG_SUITEB_128_LOS
;
1338 c
->cert_flags
|= suiteb_flags
;
1340 suiteb_flags
= c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
;
1344 /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */
1346 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_TLS1_2_CIPHERS
)) {
1347 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST
,
1348 SSL_R_AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE
);
1351 # ifndef OPENSSL_NO_EC
1352 switch (suiteb_flags
) {
1353 case SSL_CERT_FLAG_SUITEB_128_LOS
:
1355 *prule_str
= "ECDHE-ECDSA-AES256-GCM-SHA384";
1358 "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384";
1360 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY
:
1361 *prule_str
= "ECDHE-ECDSA-AES128-GCM-SHA256";
1363 case SSL_CERT_FLAG_SUITEB_192_LOS
:
1364 *prule_str
= "ECDHE-ECDSA-AES256-GCM-SHA384";
1369 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST
,
1370 SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE
);
1376 STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*ssl_method
, STACK_OF(SSL_CIPHER
)
1377 **cipher_list
, STACK_OF(SSL_CIPHER
)
1378 **cipher_list_by_id
,
1379 const char *rule_str
, CERT
*c
)
1381 int ok
, num_of_ciphers
, num_of_alias_max
, num_of_group_aliases
;
1382 uint32_t disabled_mkey
, disabled_auth
, disabled_enc
, disabled_mac
,
1384 STACK_OF(SSL_CIPHER
) *cipherstack
, *tmp_cipher_list
;
1386 CIPHER_ORDER
*co_list
= NULL
, *head
= NULL
, *tail
= NULL
, *curr
;
1387 const SSL_CIPHER
**ca_list
= NULL
;
1390 * Return with error if nothing to do.
1392 if (rule_str
== NULL
|| cipher_list
== NULL
|| cipher_list_by_id
== NULL
)
1394 #ifndef OPENSSL_NO_EC
1395 if (!check_suiteb_cipher_list(ssl_method
, c
, &rule_str
))
1400 * To reduce the work to do we only want to process the compiled
1401 * in algorithms, so we first get the mask of disabled ciphers.
1404 disabled_mkey
= disabled_mkey_mask
;
1405 disabled_auth
= disabled_auth_mask
;
1406 disabled_enc
= disabled_enc_mask
;
1407 disabled_mac
= disabled_mac_mask
;
1411 * Now we have to collect the available ciphers from the compiled
1412 * in ciphers. We cannot get more than the number compiled in, so
1413 * it is used for allocation.
1415 num_of_ciphers
= ssl_method
->num_ciphers();
1417 co_list
= OPENSSL_malloc(sizeof(*co_list
) * num_of_ciphers
);
1418 if (co_list
== NULL
) {
1419 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
1420 return (NULL
); /* Failure */
1423 ssl_cipher_collect_ciphers(ssl_method
, num_of_ciphers
,
1424 disabled_mkey
, disabled_auth
, disabled_enc
,
1425 disabled_mac
, disabled_ssl
, co_list
, &head
,
1428 /* Now arrange all ciphers by preference: */
1431 * Everything else being equal, prefer ephemeral ECDH over other key
1432 * exchange mechanisms
1434 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
,
1436 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
,
1439 /* AES is our preferred symmetric cipher */
1440 ssl_cipher_apply_rule(0, 0, 0, SSL_AES
, 0, 0, 0, CIPHER_ADD
, -1, &head
,
1443 /* Temporarily enable everything else for sorting */
1444 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
, &tail
);
1446 /* Low priority for MD5 */
1447 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5
, 0, 0, CIPHER_ORD
, -1, &head
,
1451 * Move anonymous ciphers to the end. Usually, these will remain
1452 * disabled. (For applications that allow them, they aren't too bad, but
1453 * we prefer authenticated ciphers.)
1455 ssl_cipher_apply_rule(0, 0, SSL_aNULL
, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1459 * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1,
1462 ssl_cipher_apply_rule(0, SSL_kRSA
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1464 ssl_cipher_apply_rule(0, SSL_kPSK
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1467 /* RC4 is sort-of broken -- move the the end */
1468 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4
, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1472 * Now sort by symmetric encryption strength. The above ordering remains
1473 * in force within each class
1475 if (!ssl_cipher_strength_sort(&head
, &tail
)) {
1476 OPENSSL_free(co_list
);
1480 /* Now disable everything (maintaining the ordering!) */
1481 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
, &tail
);
1484 * We also need cipher aliases for selecting based on the rule_str.
1485 * There might be two types of entries in the rule_str: 1) names
1486 * of ciphers themselves 2) aliases for groups of ciphers.
1487 * For 1) we need the available ciphers and for 2) the cipher
1488 * groups of cipher_aliases added together in one list (otherwise
1489 * we would be happy with just the cipher_aliases table).
1491 num_of_group_aliases
= OSSL_NELEM(cipher_aliases
);
1492 num_of_alias_max
= num_of_ciphers
+ num_of_group_aliases
+ 1;
1493 ca_list
= OPENSSL_malloc(sizeof(*ca_list
) * num_of_alias_max
);
1494 if (ca_list
== NULL
) {
1495 OPENSSL_free(co_list
);
1496 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
1497 return (NULL
); /* Failure */
1499 ssl_cipher_collect_aliases(ca_list
, num_of_group_aliases
,
1500 disabled_mkey
, disabled_auth
, disabled_enc
,
1501 disabled_mac
, disabled_ssl
, head
);
1504 * If the rule_string begins with DEFAULT, apply the default rule
1505 * before using the (possibly available) additional rules.
1509 if (strncmp(rule_str
, "DEFAULT", 7) == 0) {
1510 ok
= ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST
,
1511 &head
, &tail
, ca_list
, c
);
1517 if (ok
&& (strlen(rule_p
) > 0))
1518 ok
= ssl_cipher_process_rulestr(rule_p
, &head
, &tail
, ca_list
, c
);
1520 OPENSSL_free(ca_list
); /* Not needed anymore */
1522 if (!ok
) { /* Rule processing failure */
1523 OPENSSL_free(co_list
);
1528 * Allocate new "cipherstack" for the result, return with error
1529 * if we cannot get one.
1531 if ((cipherstack
= sk_SSL_CIPHER_new_null()) == NULL
) {
1532 OPENSSL_free(co_list
);
1537 * The cipher selection for the list is done. The ciphers are added
1538 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1540 for (curr
= head
; curr
!= NULL
; curr
= curr
->next
) {
1542 && (!FIPS_mode() || curr
->cipher
->algo_strength
& SSL_FIPS
)) {
1543 if (!sk_SSL_CIPHER_push(cipherstack
, curr
->cipher
)) {
1544 OPENSSL_free(co_list
);
1545 sk_SSL_CIPHER_free(cipherstack
);
1549 fprintf(stderr
, "<%s>\n", curr
->cipher
->name
);
1553 OPENSSL_free(co_list
); /* Not needed any longer */
1555 tmp_cipher_list
= sk_SSL_CIPHER_dup(cipherstack
);
1556 if (tmp_cipher_list
== NULL
) {
1557 sk_SSL_CIPHER_free(cipherstack
);
1560 sk_SSL_CIPHER_free(*cipher_list
);
1561 *cipher_list
= cipherstack
;
1562 if (*cipher_list_by_id
!= NULL
)
1563 sk_SSL_CIPHER_free(*cipher_list_by_id
);
1564 *cipher_list_by_id
= tmp_cipher_list
;
1565 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id
,
1566 ssl_cipher_ptr_id_cmp
);
1568 sk_SSL_CIPHER_sort(*cipher_list_by_id
);
1569 return (cipherstack
);
1572 char *SSL_CIPHER_description(const SSL_CIPHER
*cipher
, char *buf
, int len
)
1575 const char *kx
, *au
, *enc
, *mac
;
1576 uint32_t alg_mkey
, alg_auth
, alg_enc
, alg_mac
;
1577 static const char *format
=
1578 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s\n";
1582 buf
= OPENSSL_malloc(len
);
1585 } else if (len
< 128)
1588 alg_mkey
= cipher
->algorithm_mkey
;
1589 alg_auth
= cipher
->algorithm_auth
;
1590 alg_enc
= cipher
->algorithm_enc
;
1591 alg_mac
= cipher
->algorithm_mac
;
1593 ver
= SSL_CIPHER_get_version(cipher
);
1649 /* New GOST ciphersuites have both SSL_aGOST12 and SSL_aGOST01 bits */
1650 case (SSL_aGOST12
| SSL_aGOST01
):
1684 enc
= "AESGCM(128)";
1687 enc
= "AESGCM(256)";
1690 enc
= "AESCCM(128)";
1693 enc
= "AESCCM(256)";
1695 case SSL_AES128CCM8
:
1696 enc
= "AESCCM8(128)";
1698 case SSL_AES256CCM8
:
1699 enc
= "AESCCM8(256)";
1701 case SSL_CAMELLIA128
:
1702 enc
= "Camellia(128)";
1704 case SSL_CAMELLIA256
:
1705 enc
= "Camellia(256)";
1710 case SSL_eGOST2814789CNT
:
1711 case SSL_eGOST2814789CNT12
:
1712 enc
= "GOST89(256)";
1714 case SSL_CHACHA20POLY1305
:
1715 enc
= "CHACHA20/POLY1305(256)";
1739 case SSL_GOST89MAC12
:
1745 case SSL_GOST12_256
:
1746 case SSL_GOST12_512
:
1754 BIO_snprintf(buf
, len
, format
, cipher
->name
, ver
, kx
, au
, enc
, mac
);
1759 char *SSL_CIPHER_get_version(const SSL_CIPHER
*c
)
1765 alg_ssl
= c
->algorithm_ssl
;
1767 if (alg_ssl
& SSL_SSLV3
)
1769 if (alg_ssl
& SSL_TLSV1
)
1771 if (alg_ssl
& SSL_TLSV1_2
)
1776 /* return the actual cipher being used */
1777 const char *SSL_CIPHER_get_name(const SSL_CIPHER
*c
)
1784 /* number of bits for symmetric cipher */
1785 int SSL_CIPHER_get_bits(const SSL_CIPHER
*c
, int *alg_bits
)
1790 if (alg_bits
!= NULL
)
1791 *alg_bits
= (int) c
->alg_bits
;
1792 ret
= (int) c
->strength_bits
;
1797 uint32_t SSL_CIPHER_get_id(const SSL_CIPHER
*c
)
1802 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
)
1807 if ((n
== 0) || (sk
== NULL
))
1809 nn
= sk_SSL_COMP_num(sk
);
1810 for (i
= 0; i
< nn
; i
++) {
1811 ctmp
= sk_SSL_COMP_value(sk
, i
);
1818 #ifdef OPENSSL_NO_COMP
1819 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1823 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1828 void SSL_COMP_free_compression_methods(void)
1831 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1837 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1839 load_builtin_compressions();
1840 return (ssl_comp_methods
);
1843 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1846 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1847 ssl_comp_methods
= meths
;
1851 static void cmeth_free(SSL_COMP
*cm
)
1856 void SSL_COMP_free_compression_methods(void)
1858 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1859 ssl_comp_methods
= NULL
;
1860 sk_SSL_COMP_pop_free(old_meths
, cmeth_free
);
1863 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1867 if (cm
== NULL
|| COMP_get_type(cm
) == NID_undef
)
1871 * According to draft-ietf-tls-compression-04.txt, the
1872 * compression number ranges should be the following:
1874 * 0 to 63: methods defined by the IETF
1875 * 64 to 192: external party methods assigned by IANA
1876 * 193 to 255: reserved for private use
1878 if (id
< 193 || id
> 255) {
1879 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,
1880 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE
);
1884 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE
);
1885 comp
= OPENSSL_malloc(sizeof(*comp
));
1887 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE
);
1888 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
, ERR_R_MALLOC_FAILURE
);
1894 load_builtin_compressions();
1895 if (ssl_comp_methods
&& sk_SSL_COMP_find(ssl_comp_methods
, comp
) >= 0) {
1897 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE
);
1898 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,
1899 SSL_R_DUPLICATE_COMPRESSION_ID
);
1902 if ((ssl_comp_methods
== NULL
)
1903 || !sk_SSL_COMP_push(ssl_comp_methods
, comp
)) {
1905 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE
);
1906 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
, ERR_R_MALLOC_FAILURE
);
1909 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE
);
1914 const char *SSL_COMP_get_name(const COMP_METHOD
*comp
)
1916 #ifndef OPENSSL_NO_COMP
1917 return comp
? COMP_get_name(comp
) : NULL
;
1923 /* For a cipher return the index corresponding to the certificate type */
1924 int ssl_cipher_get_cert_index(const SSL_CIPHER
*c
)
1928 alg_a
= c
->algorithm_auth
;
1930 if (alg_a
& SSL_aECDSA
)
1931 return SSL_PKEY_ECC
;
1932 else if (alg_a
& SSL_aDSS
)
1933 return SSL_PKEY_DSA_SIGN
;
1934 else if (alg_a
& SSL_aRSA
)
1935 return SSL_PKEY_RSA_ENC
;
1936 else if (alg_a
& SSL_aGOST12
)
1937 return SSL_PKEY_GOST_EC
;
1938 else if (alg_a
& SSL_aGOST01
)
1939 return SSL_PKEY_GOST01
;
1944 const SSL_CIPHER
*ssl_get_cipher_by_char(SSL
*ssl
, const unsigned char *ptr
)
1946 const SSL_CIPHER
*c
;
1947 c
= ssl
->method
->get_cipher_by_char(ptr
);
1948 if (c
== NULL
|| c
->valid
== 0)
1953 const SSL_CIPHER
*SSL_CIPHER_find(SSL
*ssl
, const unsigned char *ptr
)
1955 return ssl
->method
->get_cipher_by_char(ptr
);
1958 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER
*c
)
1963 i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, c
->algorithm_enc
);
1966 return ssl_cipher_table_cipher
[i
].nid
;
1969 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER
*c
)
1974 i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
1977 return ssl_cipher_table_mac
[i
].nid
;