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_NUM_IDX 14
169 /* NB: make sure indices in these tables match values above */
176 /* Table of NIDs for each cipher */
177 static const ssl_cipher_table ssl_cipher_table_cipher
[SSL_ENC_NUM_IDX
] = {
178 {SSL_DES
, NID_des_cbc
}, /* SSL_ENC_DES_IDX 0 */
179 {SSL_3DES
, NID_des_ede3_cbc
}, /* SSL_ENC_3DES_IDX 1 */
180 {SSL_RC4
, NID_rc4
}, /* SSL_ENC_RC4_IDX 2 */
181 {SSL_RC2
, NID_rc2_cbc
}, /* SSL_ENC_RC2_IDX 3 */
182 {SSL_IDEA
, NID_idea_cbc
}, /* SSL_ENC_IDEA_IDX 4 */
183 {SSL_eNULL
, NID_undef
}, /* SSL_ENC_NULL_IDX 5 */
184 {SSL_AES128
, NID_aes_128_cbc
}, /* SSL_ENC_AES128_IDX 6 */
185 {SSL_AES256
, NID_aes_256_cbc
}, /* SSL_ENC_AES256_IDX 7 */
186 {SSL_CAMELLIA128
, NID_camellia_128_cbc
}, /* SSL_ENC_CAMELLIA128_IDX 8 */
187 {SSL_CAMELLIA256
, NID_camellia_256_cbc
}, /* SSL_ENC_CAMELLIA256_IDX 9 */
188 {SSL_eGOST2814789CNT
, NID_gost89_cnt
}, /* SSL_ENC_GOST89_IDX 10 */
189 {SSL_SEED
, NID_seed_cbc
}, /* SSL_ENC_SEED_IDX 11 */
190 {SSL_AES128GCM
, NID_aes_128_gcm
}, /* SSL_ENC_AES128GCM_IDX 12 */
191 {SSL_AES256GCM
, NID_aes_256_gcm
} /* SSL_ENC_AES256GCM_IDX 13 */
194 static const EVP_CIPHER
*ssl_cipher_methods
[SSL_ENC_NUM_IDX
] = {
195 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
199 #define SSL_COMP_NULL_IDX 0
200 #define SSL_COMP_ZLIB_IDX 1
201 #define SSL_COMP_NUM_IDX 2
203 static STACK_OF(SSL_COMP
) *ssl_comp_methods
= NULL
;
205 #define SSL_MD_MD5_IDX 0
206 #define SSL_MD_SHA1_IDX 1
207 #define SSL_MD_GOST94_IDX 2
208 #define SSL_MD_GOST89MAC_IDX 3
209 #define SSL_MD_SHA256_IDX 4
210 #define SSL_MD_SHA384_IDX 5
212 * Constant SSL_MAX_DIGEST equal to size of digests array should be defined
216 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
218 /* NB: make sure indices in this table matches values above */
219 static const ssl_cipher_table ssl_cipher_table_mac
[SSL_MD_NUM_IDX
] = {
220 {SSL_MD5
, NID_md5
}, /* SSL_MD_MD5_IDX 0 */
221 {SSL_SHA1
, NID_sha1
}, /* SSL_MD_SHA1_IDX 1 */
222 {SSL_GOST94
, NID_id_GostR3411_94
}, /* SSL_MD_GOST94_IDX 2 */
223 {SSL_GOST89MAC
, NID_id_Gost28147_89_MAC
}, /* SSL_MD_GOST89MAC_IDX 3 */
224 {SSL_SHA256
, NID_sha256
}, /* SSL_MD_SHA256_IDX 4 */
225 {SSL_SHA384
, NID_sha384
} /* SSL_MD_SHA384_IDX 5 */
228 static const EVP_MD
*ssl_digest_methods
[SSL_MD_NUM_IDX
] = {
229 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
232 /* Utility function for table lookup */
233 static int ssl_cipher_info_find(const ssl_cipher_table
* table
,
234 size_t table_cnt
, unsigned long mask
)
237 for (i
= 0; i
< table_cnt
; i
++, table
++) {
238 if (table
->mask
== mask
)
244 #define ssl_cipher_info_lookup(table, x) \
245 ssl_cipher_info_find(table, OSSL_NELEM(table), x)
248 * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation
249 * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is
252 static int ssl_mac_pkey_id
[SSL_MD_NUM_IDX
] = {
253 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, NID_undef
,
254 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
257 static int ssl_mac_secret_size
[SSL_MD_NUM_IDX
] = {
261 static const int ssl_handshake_digest_flag
[SSL_MD_NUM_IDX
] = {
262 SSL_HANDSHAKE_MAC_MD5
, SSL_HANDSHAKE_MAC_SHA
,
263 SSL_HANDSHAKE_MAC_GOST94
, 0, SSL_HANDSHAKE_MAC_SHA256
,
264 SSL_HANDSHAKE_MAC_SHA384
268 #define CIPHER_KILL 2
271 #define CIPHER_SPECIAL 5
273 typedef struct cipher_order_st
{
274 const SSL_CIPHER
*cipher
;
277 struct cipher_order_st
*next
, *prev
;
280 static const SSL_CIPHER cipher_aliases
[] = {
281 /* "ALL" doesn't include eNULL (must be specifically enabled) */
282 {0, SSL_TXT_ALL
, 0, 0, 0, ~SSL_eNULL
, 0, 0, 0, 0, 0, 0},
283 /* "COMPLEMENTOFALL" */
284 {0, SSL_TXT_CMPALL
, 0, 0, 0, SSL_eNULL
, 0, 0, 0, 0, 0, 0},
287 * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in
290 {0, SSL_TXT_CMPDEF
, 0, SSL_kDHE
| SSL_kECDHE
, SSL_aNULL
, ~SSL_eNULL
, 0, 0,
294 * key exchange aliases (some of those using only a single bit here
295 * combine multiple key exchange algs according to the RFCs, e.g. kDHE
296 * combines DHE_DSS and DHE_RSA)
298 {0, SSL_TXT_kRSA
, 0, SSL_kRSA
, 0, 0, 0, 0, 0, 0, 0, 0},
300 {0, SSL_TXT_kDHr
, 0, SSL_kDHr
, 0, 0, 0, 0, 0, 0, 0, 0},
301 {0, SSL_TXT_kDHd
, 0, SSL_kDHd
, 0, 0, 0, 0, 0, 0, 0, 0},
302 {0, SSL_TXT_kDH
, 0, SSL_kDHr
| SSL_kDHd
, 0, 0, 0, 0, 0, 0, 0, 0},
303 {0, SSL_TXT_kEDH
, 0, SSL_kDHE
, 0, 0, 0, 0, 0, 0, 0, 0},
304 {0, SSL_TXT_kDHE
, 0, SSL_kDHE
, 0, 0, 0, 0, 0, 0, 0, 0},
305 {0, SSL_TXT_DH
, 0, SSL_kDHr
| SSL_kDHd
| SSL_kDHE
, 0, 0, 0, 0, 0, 0, 0,
308 {0, SSL_TXT_kECDHr
, 0, SSL_kECDHr
, 0, 0, 0, 0, 0, 0, 0, 0},
309 {0, SSL_TXT_kECDHe
, 0, SSL_kECDHe
, 0, 0, 0, 0, 0, 0, 0, 0},
310 {0, SSL_TXT_kECDH
, 0, SSL_kECDHr
| SSL_kECDHe
, 0, 0, 0, 0, 0, 0, 0, 0},
311 {0, SSL_TXT_kEECDH
, 0, SSL_kECDHE
, 0, 0, 0, 0, 0, 0, 0, 0},
312 {0, SSL_TXT_kECDHE
, 0, SSL_kECDHE
, 0, 0, 0, 0, 0, 0, 0, 0},
313 {0, SSL_TXT_ECDH
, 0, SSL_kECDHr
| SSL_kECDHe
| SSL_kECDHE
, 0, 0, 0, 0, 0,
316 {0, SSL_TXT_kPSK
, 0, SSL_kPSK
, 0, 0, 0, 0, 0, 0, 0, 0},
317 {0, SSL_TXT_kRSAPSK
, 0, SSL_kRSAPSK
, 0, 0, 0, 0, 0, 0, 0, 0},
318 {0, SSL_TXT_kECDHEPSK
, 0, SSL_kECDHEPSK
, 0, 0, 0, 0, 0, 0, 0, 0},
319 {0, SSL_TXT_kDHEPSK
, 0, SSL_kDHEPSK
, 0, 0, 0, 0, 0, 0, 0, 0},
320 {0, SSL_TXT_kSRP
, 0, SSL_kSRP
, 0, 0, 0, 0, 0, 0, 0, 0},
321 {0, SSL_TXT_kGOST
, 0, SSL_kGOST
, 0, 0, 0, 0, 0, 0, 0, 0},
323 /* server authentication aliases */
324 {0, SSL_TXT_aRSA
, 0, 0, SSL_aRSA
, 0, 0, 0, 0, 0, 0, 0},
325 {0, SSL_TXT_aDSS
, 0, 0, SSL_aDSS
, 0, 0, 0, 0, 0, 0, 0},
326 {0, SSL_TXT_DSS
, 0, 0, SSL_aDSS
, 0, 0, 0, 0, 0, 0, 0},
327 {0, SSL_TXT_aNULL
, 0, 0, SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
328 /* no such ciphersuites supported! */
329 {0, SSL_TXT_aDH
, 0, 0, SSL_aDH
, 0, 0, 0, 0, 0, 0, 0},
330 {0, SSL_TXT_aECDH
, 0, 0, SSL_aECDH
, 0, 0, 0, 0, 0, 0, 0},
331 {0, SSL_TXT_aECDSA
, 0, 0, SSL_aECDSA
, 0, 0, 0, 0, 0, 0, 0},
332 {0, SSL_TXT_ECDSA
, 0, 0, SSL_aECDSA
, 0, 0, 0, 0, 0, 0, 0},
333 {0, SSL_TXT_aPSK
, 0, 0, SSL_aPSK
, 0, 0, 0, 0, 0, 0, 0},
334 {0, SSL_TXT_aGOST01
, 0, 0, SSL_aGOST01
, 0, 0, 0, 0, 0, 0, 0},
335 {0, SSL_TXT_aGOST
, 0, 0, SSL_aGOST01
, 0, 0, 0, 0, 0, 0, 0},
336 {0, SSL_TXT_aSRP
, 0, 0, SSL_aSRP
, 0, 0, 0, 0, 0, 0, 0},
338 /* aliases combining key exchange and server authentication */
339 {0, SSL_TXT_EDH
, 0, SSL_kDHE
, ~SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
340 {0, SSL_TXT_DHE
, 0, SSL_kDHE
, ~SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
341 {0, SSL_TXT_EECDH
, 0, SSL_kECDHE
, ~SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
342 {0, SSL_TXT_ECDHE
, 0, SSL_kECDHE
, ~SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
343 {0, SSL_TXT_NULL
, 0, 0, 0, SSL_eNULL
, 0, 0, 0, 0, 0, 0},
344 {0, SSL_TXT_RSA
, 0, SSL_kRSA
, SSL_aRSA
, 0, 0, 0, 0, 0, 0, 0},
345 {0, SSL_TXT_ADH
, 0, SSL_kDHE
, SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
346 {0, SSL_TXT_AECDH
, 0, SSL_kECDHE
, SSL_aNULL
, 0, 0, 0, 0, 0, 0, 0},
347 {0, SSL_TXT_PSK
, 0, SSL_PSK
, 0, 0, 0, 0, 0, 0, 0, 0},
348 {0, SSL_TXT_SRP
, 0, SSL_kSRP
, 0, 0, 0, 0, 0, 0, 0, 0},
350 /* symmetric encryption aliases */
351 {0, SSL_TXT_DES
, 0, 0, 0, SSL_DES
, 0, 0, 0, 0, 0, 0},
352 {0, SSL_TXT_3DES
, 0, 0, 0, SSL_3DES
, 0, 0, 0, 0, 0, 0},
353 {0, SSL_TXT_RC4
, 0, 0, 0, SSL_RC4
, 0, 0, 0, 0, 0, 0},
354 {0, SSL_TXT_RC2
, 0, 0, 0, SSL_RC2
, 0, 0, 0, 0, 0, 0},
355 {0, SSL_TXT_IDEA
, 0, 0, 0, SSL_IDEA
, 0, 0, 0, 0, 0, 0},
356 {0, SSL_TXT_SEED
, 0, 0, 0, SSL_SEED
, 0, 0, 0, 0, 0, 0},
357 {0, SSL_TXT_eNULL
, 0, 0, 0, SSL_eNULL
, 0, 0, 0, 0, 0, 0},
358 {0, SSL_TXT_AES128
, 0, 0, 0, SSL_AES128
| SSL_AES128GCM
, 0, 0, 0, 0, 0,
360 {0, SSL_TXT_AES256
, 0, 0, 0, SSL_AES256
| SSL_AES256GCM
, 0, 0, 0, 0, 0,
362 {0, SSL_TXT_AES
, 0, 0, 0, SSL_AES
, 0, 0, 0, 0, 0, 0},
363 {0, SSL_TXT_AES_GCM
, 0, 0, 0, SSL_AES128GCM
| SSL_AES256GCM
, 0, 0, 0, 0,
365 {0, SSL_TXT_CAMELLIA128
, 0, 0, 0, SSL_CAMELLIA128
, 0, 0, 0, 0, 0, 0},
366 {0, SSL_TXT_CAMELLIA256
, 0, 0, 0, SSL_CAMELLIA256
, 0, 0, 0, 0, 0, 0},
367 {0, SSL_TXT_CAMELLIA
, 0, 0, 0, SSL_CAMELLIA128
| SSL_CAMELLIA256
, 0, 0, 0,
371 {0, SSL_TXT_MD5
, 0, 0, 0, 0, SSL_MD5
, 0, 0, 0, 0, 0},
372 {0, SSL_TXT_SHA1
, 0, 0, 0, 0, SSL_SHA1
, 0, 0, 0, 0, 0},
373 {0, SSL_TXT_SHA
, 0, 0, 0, 0, SSL_SHA1
, 0, 0, 0, 0, 0},
374 {0, SSL_TXT_GOST94
, 0, 0, 0, 0, SSL_GOST94
, 0, 0, 0, 0, 0},
375 {0, SSL_TXT_GOST89MAC
, 0, 0, 0, 0, SSL_GOST89MAC
, 0, 0, 0, 0, 0},
376 {0, SSL_TXT_SHA256
, 0, 0, 0, 0, SSL_SHA256
, 0, 0, 0, 0, 0},
377 {0, SSL_TXT_SHA384
, 0, 0, 0, 0, SSL_SHA384
, 0, 0, 0, 0, 0},
379 /* protocol version aliases */
380 {0, SSL_TXT_SSLV3
, 0, 0, 0, 0, 0, SSL_SSLV3
, 0, 0, 0, 0},
381 {0, SSL_TXT_TLSV1
, 0, 0, 0, 0, 0, SSL_TLSV1
, 0, 0, 0, 0},
382 {0, SSL_TXT_TLSV1_2
, 0, 0, 0, 0, 0, SSL_TLSV1_2
, 0, 0, 0, 0},
385 {0, SSL_TXT_EXP
, 0, 0, 0, 0, 0, 0, SSL_EXPORT
, 0, 0, 0},
386 {0, SSL_TXT_EXPORT
, 0, 0, 0, 0, 0, 0, SSL_EXPORT
, 0, 0, 0},
388 /* strength classes */
389 {0, SSL_TXT_EXP40
, 0, 0, 0, 0, 0, 0, SSL_EXP40
, 0, 0, 0},
390 {0, SSL_TXT_EXP56
, 0, 0, 0, 0, 0, 0, SSL_EXP56
, 0, 0, 0},
391 {0, SSL_TXT_LOW
, 0, 0, 0, 0, 0, 0, SSL_LOW
, 0, 0, 0},
392 {0, SSL_TXT_MEDIUM
, 0, 0, 0, 0, 0, 0, SSL_MEDIUM
, 0, 0, 0},
393 {0, SSL_TXT_HIGH
, 0, 0, 0, 0, 0, 0, SSL_HIGH
, 0, 0, 0},
394 /* FIPS 140-2 approved ciphersuite */
395 {0, SSL_TXT_FIPS
, 0, 0, 0, ~SSL_eNULL
, 0, 0, SSL_FIPS
, 0, 0, 0},
397 /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */
398 {0, SSL3_TXT_EDH_DSS_DES_40_CBC_SHA
, 0,
399 SSL_kDHE
, SSL_aDSS
, SSL_DES
, SSL_SHA1
, SSL_SSLV3
, SSL_EXPORT
| SSL_EXP40
,
401 {0, SSL3_TXT_EDH_DSS_DES_64_CBC_SHA
, 0,
402 SSL_kDHE
, SSL_aDSS
, SSL_DES
, SSL_SHA1
, SSL_SSLV3
, SSL_NOT_EXP
| SSL_LOW
,
404 {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA
, 0,
405 SSL_kDHE
, SSL_aDSS
, SSL_3DES
, SSL_SHA1
, SSL_SSLV3
,
406 SSL_NOT_EXP
| SSL_HIGH
| SSL_FIPS
, 0, 0, 0,},
407 {0, SSL3_TXT_EDH_RSA_DES_40_CBC_SHA
, 0,
408 SSL_kDHE
, SSL_aRSA
, SSL_DES
, SSL_SHA1
, SSL_SSLV3
, SSL_EXPORT
| SSL_EXP40
,
410 {0, SSL3_TXT_EDH_RSA_DES_64_CBC_SHA
, 0,
411 SSL_kDHE
, SSL_aRSA
, SSL_DES
, SSL_SHA1
, SSL_SSLV3
, SSL_NOT_EXP
| SSL_LOW
,
413 {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA
, 0,
414 SSL_kDHE
, SSL_aRSA
, SSL_3DES
, SSL_SHA1
, SSL_SSLV3
,
415 SSL_NOT_EXP
| 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);
431 EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
, ameth
);
438 static int get_optional_pkey_id(const char *pkey_name
)
440 const EVP_PKEY_ASN1_METHOD
*ameth
;
441 ENGINE
*tmpeng
= NULL
;
443 ameth
= EVP_PKEY_asn1_find_str(&tmpeng
, pkey_name
, -1);
445 EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
, ameth
);
448 ENGINE_finish(tmpeng
);
454 /* masks of disabled algorithms */
455 static unsigned long disabled_enc_mask
;
456 static unsigned long disabled_mac_mask
;
457 static unsigned long disabled_mkey_mask
;
458 static unsigned long disabled_auth_mask
;
460 void ssl_load_ciphers(void)
463 const ssl_cipher_table
*t
;
464 disabled_enc_mask
= 0;
465 for (i
= 0, t
= ssl_cipher_table_cipher
; i
< SSL_ENC_NUM_IDX
; i
++, t
++) {
466 if (t
->nid
== NID_undef
) {
467 ssl_cipher_methods
[i
] = NULL
;
469 const EVP_CIPHER
*cipher
= EVP_get_cipherbynid(t
->nid
);
470 ssl_cipher_methods
[i
] = cipher
;
472 disabled_enc_mask
|= t
->mask
;
475 #ifdef SSL_FORBID_ENULL
476 disabled_enc_mask
|= SSL_eNULL
;
478 disabled_mac_mask
= 0;
479 for (i
= 0, t
= ssl_cipher_table_mac
; i
< SSL_MD_NUM_IDX
; i
++, t
++) {
480 const EVP_MD
*md
= EVP_get_digestbynid(t
->nid
);
481 ssl_digest_methods
[i
] = md
;
483 disabled_mac_mask
|= t
->mask
;
485 ssl_mac_secret_size
[i
] = EVP_MD_size(md
);
486 OPENSSL_assert(ssl_mac_secret_size
[i
] >= 0);
489 /* Make sure we can access MD5 and SHA1 */
490 OPENSSL_assert(ssl_digest_methods
[SSL_MD_MD5_IDX
] != NULL
);
491 OPENSSL_assert(ssl_digest_methods
[SSL_MD_SHA1_IDX
] != NULL
);
493 disabled_mkey_mask
= 0;
494 disabled_auth_mask
= 0;
496 #ifdef OPENSSL_NO_RSA
497 disabled_mkey_mask
|= SSL_kRSA
| SSL_kRSAPSK
;
498 disabled_auth_mask
|= SSL_aRSA
;
500 #ifdef OPENSSL_NO_DSA
501 disabled_auth_mask
|= SSL_aDSS
;
504 disabled_mkey_mask
|= SSL_kDHr
| SSL_kDHd
| SSL_kDHE
| SSL_kDHEPSK
;
505 disabled_auth_mask
|= SSL_aDH
;
508 disabled_mkey_mask
|= SSL_kECDHe
| SSL_kECDHr
| SSL_kECDHEPSK
;
509 disabled_auth_mask
|= SSL_aECDSA
| SSL_aECDH
;
511 #ifdef OPENSSL_NO_PSK
512 disabled_mkey_mask
|= SSL_PSK
;
513 disabled_auth_mask
|= SSL_aPSK
;
515 #ifdef OPENSSL_NO_SRP
516 disabled_mkey_mask
|= SSL_kSRP
;
520 * Check for presence of GOST 34.10 algorithms, and if they are not
521 * present, disable appropriate auth and key exchange
523 ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
] = get_optional_pkey_id("gost-mac");
524 if (ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
]) {
525 ssl_mac_secret_size
[SSL_MD_GOST89MAC_IDX
] = 32;
527 disabled_mac_mask
|= SSL_GOST89MAC
;
530 if (!get_optional_pkey_id("gost2001"))
531 disabled_auth_mask
|= SSL_aGOST01
;
533 * Disable GOST key exchange if no GOST signature algs are available *
535 if ((disabled_auth_mask
& SSL_aGOST01
) == SSL_aGOST01
)
536 disabled_mkey_mask
|= SSL_kGOST
;
539 #ifndef OPENSSL_NO_COMP
541 static int sk_comp_cmp(const SSL_COMP
*const *a
, const SSL_COMP
*const *b
)
543 return ((*a
)->id
- (*b
)->id
);
546 static void load_builtin_compressions(void)
548 int got_write_lock
= 0;
550 CRYPTO_r_lock(CRYPTO_LOCK_SSL
);
551 if (ssl_comp_methods
== NULL
) {
552 CRYPTO_r_unlock(CRYPTO_LOCK_SSL
);
553 CRYPTO_w_lock(CRYPTO_LOCK_SSL
);
556 if (ssl_comp_methods
== NULL
) {
557 SSL_COMP
*comp
= NULL
;
558 COMP_METHOD
*method
= COMP_zlib();
561 ssl_comp_methods
= sk_SSL_COMP_new(sk_comp_cmp
);
562 if (COMP_get_type(method
) != NID_undef
563 && ssl_comp_methods
!= NULL
) {
564 comp
= OPENSSL_malloc(sizeof(*comp
));
566 comp
->method
= method
;
567 comp
->id
= SSL_COMP_ZLIB_IDX
;
568 comp
->name
= COMP_get_name(method
);
569 sk_SSL_COMP_push(ssl_comp_methods
, comp
);
570 sk_SSL_COMP_sort(ssl_comp_methods
);
578 CRYPTO_w_unlock(CRYPTO_LOCK_SSL
);
580 CRYPTO_r_unlock(CRYPTO_LOCK_SSL
);
584 int ssl_cipher_get_evp(const SSL_SESSION
*s
, const EVP_CIPHER
**enc
,
585 const EVP_MD
**md
, int *mac_pkey_type
,
586 int *mac_secret_size
, SSL_COMP
**comp
, int use_etm
)
596 #ifndef OPENSSL_NO_COMP
597 load_builtin_compressions();
601 ctmp
.id
= s
->compress_meth
;
602 if (ssl_comp_methods
!= NULL
) {
603 i
= sk_SSL_COMP_find(ssl_comp_methods
, &ctmp
);
605 *comp
= sk_SSL_COMP_value(ssl_comp_methods
, i
);
609 /* If were only interested in comp then return success */
610 if ((enc
== NULL
) && (md
== NULL
))
614 if ((enc
== NULL
) || (md
== NULL
))
617 i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, c
->algorithm_enc
);
622 if (i
== SSL_ENC_NULL_IDX
)
623 *enc
= EVP_enc_null();
625 *enc
= ssl_cipher_methods
[i
];
628 i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
631 if (mac_pkey_type
!= NULL
)
632 *mac_pkey_type
= NID_undef
;
633 if (mac_secret_size
!= NULL
)
634 *mac_secret_size
= 0;
635 if (c
->algorithm_mac
== SSL_AEAD
)
636 mac_pkey_type
= NULL
;
638 *md
= ssl_digest_methods
[i
];
639 if (mac_pkey_type
!= NULL
)
640 *mac_pkey_type
= ssl_mac_pkey_id
[i
];
641 if (mac_secret_size
!= NULL
)
642 *mac_secret_size
= ssl_mac_secret_size
[i
];
645 if ((*enc
!= NULL
) &&
646 (*md
!= NULL
|| (EVP_CIPHER_flags(*enc
) & EVP_CIPH_FLAG_AEAD_CIPHER
))
647 && (!mac_pkey_type
|| *mac_pkey_type
!= NID_undef
)) {
648 const EVP_CIPHER
*evp
;
653 if (s
->ssl_version
>> 8 != TLS1_VERSION_MAJOR
||
654 s
->ssl_version
< TLS1_VERSION
)
660 if (c
->algorithm_enc
== SSL_RC4
&&
661 c
->algorithm_mac
== SSL_MD5
&&
662 (evp
= EVP_get_cipherbyname("RC4-HMAC-MD5")))
663 *enc
= evp
, *md
= NULL
;
664 else if (c
->algorithm_enc
== SSL_AES128
&&
665 c
->algorithm_mac
== SSL_SHA1
&&
666 (evp
= EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
667 *enc
= evp
, *md
= NULL
;
668 else if (c
->algorithm_enc
== SSL_AES256
&&
669 c
->algorithm_mac
== SSL_SHA1
&&
670 (evp
= EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
671 *enc
= evp
, *md
= NULL
;
672 else if (c
->algorithm_enc
== SSL_AES128
&&
673 c
->algorithm_mac
== SSL_SHA256
&&
674 (evp
= EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA256")))
675 *enc
= evp
, *md
= NULL
;
676 else if (c
->algorithm_enc
== SSL_AES256
&&
677 c
->algorithm_mac
== SSL_SHA256
&&
678 (evp
= EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA256")))
679 *enc
= evp
, *md
= NULL
;
685 int ssl_get_handshake_digest(int idx
, long *mask
, const EVP_MD
**md
)
687 if (idx
< 0 || idx
>= SSL_MD_NUM_IDX
) {
690 *mask
= ssl_handshake_digest_flag
[idx
];
692 *md
= ssl_digest_methods
[idx
];
698 #define ITEM_SEP(a) \
699 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
701 static void ll_append_tail(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
708 if (curr
->prev
!= NULL
)
709 curr
->prev
->next
= curr
->next
;
710 if (curr
->next
!= NULL
)
711 curr
->next
->prev
= curr
->prev
;
712 (*tail
)->next
= curr
;
718 static void ll_append_head(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
725 if (curr
->next
!= NULL
)
726 curr
->next
->prev
= curr
->prev
;
727 if (curr
->prev
!= NULL
)
728 curr
->prev
->next
= curr
->next
;
729 (*head
)->prev
= curr
;
735 static void ssl_cipher_collect_ciphers(const SSL_METHOD
*ssl_method
,
737 unsigned long disabled_mkey
,
738 unsigned long disabled_auth
,
739 unsigned long disabled_enc
,
740 unsigned long disabled_mac
,
741 unsigned long disabled_ssl
,
742 CIPHER_ORDER
*co_list
,
743 CIPHER_ORDER
**head_p
,
744 CIPHER_ORDER
**tail_p
)
750 * We have num_of_ciphers descriptions compiled in, depending on the
751 * method selected (SSLv3, TLSv1 etc).
752 * These will later be sorted in a linked list with at most num
756 /* Get the initial list of ciphers */
757 co_list_num
= 0; /* actual count of ciphers */
758 for (i
= 0; i
< num_of_ciphers
; i
++) {
759 c
= ssl_method
->get_cipher(i
);
760 /* drop those that use any of that is not available */
761 if ((c
!= NULL
) && c
->valid
&&
762 (!FIPS_mode() || (c
->algo_strength
& SSL_FIPS
)) &&
763 !(c
->algorithm_mkey
& disabled_mkey
) &&
764 !(c
->algorithm_auth
& disabled_auth
) &&
765 !(c
->algorithm_enc
& disabled_enc
) &&
766 !(c
->algorithm_mac
& disabled_mac
) &&
767 !(c
->algorithm_ssl
& disabled_ssl
)) {
768 co_list
[co_list_num
].cipher
= c
;
769 co_list
[co_list_num
].next
= NULL
;
770 co_list
[co_list_num
].prev
= NULL
;
771 co_list
[co_list_num
].active
= 0;
774 * if (!sk_push(ca_list,(char *)c)) goto err;
780 * Prepare linked list from list entries
782 if (co_list_num
> 0) {
783 co_list
[0].prev
= NULL
;
785 if (co_list_num
> 1) {
786 co_list
[0].next
= &co_list
[1];
788 for (i
= 1; i
< co_list_num
- 1; i
++) {
789 co_list
[i
].prev
= &co_list
[i
- 1];
790 co_list
[i
].next
= &co_list
[i
+ 1];
793 co_list
[co_list_num
- 1].prev
= &co_list
[co_list_num
- 2];
796 co_list
[co_list_num
- 1].next
= NULL
;
798 *head_p
= &co_list
[0];
799 *tail_p
= &co_list
[co_list_num
- 1];
803 static void ssl_cipher_collect_aliases(const SSL_CIPHER
**ca_list
,
804 int num_of_group_aliases
,
805 unsigned long disabled_mkey
,
806 unsigned long disabled_auth
,
807 unsigned long disabled_enc
,
808 unsigned long disabled_mac
,
809 unsigned long disabled_ssl
,
812 CIPHER_ORDER
*ciph_curr
;
813 const SSL_CIPHER
**ca_curr
;
815 unsigned long mask_mkey
= ~disabled_mkey
;
816 unsigned long mask_auth
= ~disabled_auth
;
817 unsigned long mask_enc
= ~disabled_enc
;
818 unsigned long mask_mac
= ~disabled_mac
;
819 unsigned long mask_ssl
= ~disabled_ssl
;
822 * First, add the real ciphers as already collected
826 while (ciph_curr
!= NULL
) {
827 *ca_curr
= ciph_curr
->cipher
;
829 ciph_curr
= ciph_curr
->next
;
833 * Now we add the available ones from the cipher_aliases[] table.
834 * They represent either one or more algorithms, some of which
835 * in any affected category must be supported (set in enabled_mask),
836 * or represent a cipher strength value (will be added in any case because algorithms=0).
838 for (i
= 0; i
< num_of_group_aliases
; i
++) {
839 unsigned long algorithm_mkey
= cipher_aliases
[i
].algorithm_mkey
;
840 unsigned long algorithm_auth
= cipher_aliases
[i
].algorithm_auth
;
841 unsigned long algorithm_enc
= cipher_aliases
[i
].algorithm_enc
;
842 unsigned long algorithm_mac
= cipher_aliases
[i
].algorithm_mac
;
843 unsigned long algorithm_ssl
= cipher_aliases
[i
].algorithm_ssl
;
846 if ((algorithm_mkey
& mask_mkey
) == 0)
850 if ((algorithm_auth
& mask_auth
) == 0)
854 if ((algorithm_enc
& mask_enc
) == 0)
858 if ((algorithm_mac
& mask_mac
) == 0)
862 if ((algorithm_ssl
& mask_ssl
) == 0)
865 *ca_curr
= (SSL_CIPHER
*)(cipher_aliases
+ i
);
869 *ca_curr
= NULL
; /* end of list */
872 static void ssl_cipher_apply_rule(unsigned long cipher_id
,
873 unsigned long alg_mkey
,
874 unsigned long alg_auth
,
875 unsigned long alg_enc
,
876 unsigned long alg_mac
,
877 unsigned long alg_ssl
,
878 unsigned long algo_strength
, int rule
,
879 int strength_bits
, CIPHER_ORDER
**head_p
,
880 CIPHER_ORDER
**tail_p
)
882 CIPHER_ORDER
*head
, *tail
, *curr
, *next
, *last
;
883 const SSL_CIPHER
*cp
;
888 "Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
889 rule
, alg_mkey
, alg_auth
, alg_enc
, alg_mac
, alg_ssl
,
890 algo_strength
, strength_bits
);
893 if (rule
== CIPHER_DEL
)
894 reverse
= 1; /* needed to maintain sorting between
895 * currently deleted ciphers */
918 next
= reverse
? curr
->prev
: curr
->next
;
923 * Selection criteria is either the value of strength_bits
924 * or the algorithms used.
926 if (strength_bits
>= 0) {
927 if (strength_bits
!= cp
->strength_bits
)
932 "\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n",
933 cp
->name
, cp
->algorithm_mkey
, cp
->algorithm_auth
,
934 cp
->algorithm_enc
, cp
->algorithm_mac
, cp
->algorithm_ssl
,
937 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
938 if (cipher_id
&& cipher_id
!= cp
->id
)
941 if (alg_mkey
&& !(alg_mkey
& cp
->algorithm_mkey
))
943 if (alg_auth
&& !(alg_auth
& cp
->algorithm_auth
))
945 if (alg_enc
&& !(alg_enc
& cp
->algorithm_enc
))
947 if (alg_mac
&& !(alg_mac
& cp
->algorithm_mac
))
949 if (alg_ssl
&& !(alg_ssl
& cp
->algorithm_ssl
))
951 if ((algo_strength
& SSL_EXP_MASK
)
952 && !(algo_strength
& SSL_EXP_MASK
& cp
->algo_strength
))
954 if ((algo_strength
& SSL_STRONG_MASK
)
955 && !(algo_strength
& SSL_STRONG_MASK
& cp
->algo_strength
))
960 fprintf(stderr
, "Action = %d\n", rule
);
963 /* add the cipher if it has not been added yet. */
964 if (rule
== CIPHER_ADD
) {
967 ll_append_tail(&head
, curr
, &tail
);
971 /* Move the added cipher to this location */
972 else if (rule
== CIPHER_ORD
) {
975 ll_append_tail(&head
, curr
, &tail
);
977 } else if (rule
== CIPHER_DEL
) {
981 * most recently deleted ciphersuites get best positions for
982 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
983 * in reverse to maintain the order)
985 ll_append_head(&head
, curr
, &tail
);
988 } else if (rule
== CIPHER_KILL
) {
993 curr
->prev
->next
= curr
->next
;
997 if (curr
->next
!= NULL
)
998 curr
->next
->prev
= curr
->prev
;
999 if (curr
->prev
!= NULL
)
1000 curr
->prev
->next
= curr
->next
;
1010 static int ssl_cipher_strength_sort(CIPHER_ORDER
**head_p
,
1011 CIPHER_ORDER
**tail_p
)
1013 int max_strength_bits
, i
, *number_uses
;
1017 * This routine sorts the ciphers with descending strength. The sorting
1018 * must keep the pre-sorted sequence, so we apply the normal sorting
1019 * routine as '+' movement to the end of the list.
1021 max_strength_bits
= 0;
1023 while (curr
!= NULL
) {
1024 if (curr
->active
&& (curr
->cipher
->strength_bits
> max_strength_bits
))
1025 max_strength_bits
= curr
->cipher
->strength_bits
;
1029 number_uses
= OPENSSL_malloc(sizeof(int) * (max_strength_bits
+ 1));
1031 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT
, ERR_R_MALLOC_FAILURE
);
1034 memset(number_uses
, 0, sizeof(int) * (max_strength_bits
+ 1));
1037 * Now find the strength_bits values actually used
1040 while (curr
!= NULL
) {
1042 number_uses
[curr
->cipher
->strength_bits
]++;
1046 * Go through the list of used strength_bits values in descending
1049 for (i
= max_strength_bits
; i
>= 0; i
--)
1050 if (number_uses
[i
] > 0)
1051 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD
, i
, head_p
,
1054 OPENSSL_free(number_uses
);
1058 static int ssl_cipher_process_rulestr(const char *rule_str
,
1059 CIPHER_ORDER
**head_p
,
1060 CIPHER_ORDER
**tail_p
,
1061 const SSL_CIPHER
**ca_list
, CERT
*c
)
1063 unsigned long alg_mkey
, alg_auth
, alg_enc
, alg_mac
, alg_ssl
,
1065 const char *l
, *buf
;
1066 int j
, multi
, found
, rule
, retval
, ok
, buflen
;
1067 unsigned long cipher_id
= 0;
1080 } else if (ch
== '+') {
1083 } else if (ch
== '!') {
1086 } else if (ch
== '@') {
1087 rule
= CIPHER_SPECIAL
;
1109 #ifndef CHARSET_EBCDIC
1110 while (((ch
>= 'A') && (ch
<= 'Z')) ||
1111 ((ch
>= '0') && (ch
<= '9')) ||
1112 ((ch
>= 'a') && (ch
<= 'z')) ||
1113 (ch
== '-') || (ch
== '.') || (ch
== '='))
1115 while (isalnum(ch
) || (ch
== '-') || (ch
== '.') || (ch
== '='))
1124 * We hit something we cannot deal with,
1125 * it is no command or separator nor
1126 * alphanumeric, so we call this an error.
1128 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
1129 SSL_R_INVALID_COMMAND
);
1135 if (rule
== CIPHER_SPECIAL
) {
1136 found
= 0; /* unused -- avoid compiler warning */
1137 break; /* special treatment */
1140 /* check for multi-part specification */
1148 * Now search for the cipher alias in the ca_list. Be careful
1149 * with the strncmp, because the "buflen" limitation
1150 * will make the rule "ADH:SOME" and the cipher
1151 * "ADH-MY-CIPHER" look like a match for buflen=3.
1152 * So additionally check whether the cipher name found
1153 * has the correct length. We can save a strlen() call:
1154 * just checking for the '\0' at the right place is
1155 * sufficient, we have to strncmp() anyway. (We cannot
1156 * use strcmp(), because buf is not '\0' terminated.)
1160 while (ca_list
[j
]) {
1161 if (strncmp(buf
, ca_list
[j
]->name
, buflen
) == 0
1162 && (ca_list
[j
]->name
[buflen
] == '\0')) {
1170 break; /* ignore this entry */
1172 if (ca_list
[j
]->algorithm_mkey
) {
1174 alg_mkey
&= ca_list
[j
]->algorithm_mkey
;
1180 alg_mkey
= ca_list
[j
]->algorithm_mkey
;
1183 if (ca_list
[j
]->algorithm_auth
) {
1185 alg_auth
&= ca_list
[j
]->algorithm_auth
;
1191 alg_auth
= ca_list
[j
]->algorithm_auth
;
1194 if (ca_list
[j
]->algorithm_enc
) {
1196 alg_enc
&= ca_list
[j
]->algorithm_enc
;
1202 alg_enc
= ca_list
[j
]->algorithm_enc
;
1205 if (ca_list
[j
]->algorithm_mac
) {
1207 alg_mac
&= ca_list
[j
]->algorithm_mac
;
1213 alg_mac
= ca_list
[j
]->algorithm_mac
;
1216 if (ca_list
[j
]->algo_strength
& SSL_EXP_MASK
) {
1217 if (algo_strength
& SSL_EXP_MASK
) {
1219 (ca_list
[j
]->algo_strength
& SSL_EXP_MASK
) |
1221 if (!(algo_strength
& SSL_EXP_MASK
)) {
1226 algo_strength
|= ca_list
[j
]->algo_strength
& SSL_EXP_MASK
;
1229 if (ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
) {
1230 if (algo_strength
& SSL_STRONG_MASK
) {
1232 (ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
) |
1234 if (!(algo_strength
& SSL_STRONG_MASK
)) {
1240 ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
;
1243 if (ca_list
[j
]->valid
) {
1245 * explicit ciphersuite found; its protocol version does not
1246 * become part of the search pattern!
1249 cipher_id
= ca_list
[j
]->id
;
1252 * not an explicit ciphersuite; only in this case, the
1253 * protocol version is considered part of the search pattern
1256 if (ca_list
[j
]->algorithm_ssl
) {
1258 alg_ssl
&= ca_list
[j
]->algorithm_ssl
;
1264 alg_ssl
= ca_list
[j
]->algorithm_ssl
;
1273 * Ok, we have the rule, now apply it
1275 if (rule
== CIPHER_SPECIAL
) { /* special command */
1277 if ((buflen
== 8) && strncmp(buf
, "STRENGTH", 8) == 0)
1278 ok
= ssl_cipher_strength_sort(head_p
, tail_p
);
1279 else if (buflen
== 10 && strncmp(buf
, "SECLEVEL=", 9) == 0) {
1280 int level
= buf
[9] - '0';
1281 if (level
< 0 || level
> 5) {
1282 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
1283 SSL_R_INVALID_COMMAND
);
1285 c
->sec_level
= level
;
1289 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
1290 SSL_R_INVALID_COMMAND
);
1294 * We do not support any "multi" options
1295 * together with "@", so throw away the
1296 * rest of the command, if any left, until
1297 * end or ':' is found.
1299 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1302 ssl_cipher_apply_rule(cipher_id
,
1303 alg_mkey
, alg_auth
, alg_enc
, alg_mac
,
1304 alg_ssl
, algo_strength
, rule
, -1, head_p
,
1307 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1317 #ifndef OPENSSL_NO_EC
1318 static int check_suiteb_cipher_list(const SSL_METHOD
*meth
, CERT
*c
,
1319 const char **prule_str
)
1321 unsigned int suiteb_flags
= 0, suiteb_comb2
= 0;
1322 if (strcmp(*prule_str
, "SUITEB128") == 0)
1323 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1324 else if (strcmp(*prule_str
, "SUITEB128ONLY") == 0)
1325 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS_ONLY
;
1326 else if (strcmp(*prule_str
, "SUITEB128C2") == 0) {
1328 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1329 } else if (strcmp(*prule_str
, "SUITEB192") == 0)
1330 suiteb_flags
= SSL_CERT_FLAG_SUITEB_192_LOS
;
1333 c
->cert_flags
&= ~SSL_CERT_FLAG_SUITEB_128_LOS
;
1334 c
->cert_flags
|= suiteb_flags
;
1336 suiteb_flags
= c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
;
1340 /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */
1342 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_TLS1_2_CIPHERS
)) {
1343 if (meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
)
1344 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST
,
1345 SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE
);
1347 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST
,
1348 SSL_R_ONLY_TLS_1_2_ALLOWED_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";
1367 /* Set auto ECDH parameter determination */
1368 c
->ecdh_tmp_auto
= 1;
1371 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST
,
1372 SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE
);
1378 STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*ssl_method
, STACK_OF(SSL_CIPHER
)
1379 **cipher_list
, STACK_OF(SSL_CIPHER
)
1380 **cipher_list_by_id
,
1381 const char *rule_str
, CERT
*c
)
1383 int ok
, num_of_ciphers
, num_of_alias_max
, num_of_group_aliases
;
1384 unsigned long disabled_mkey
, disabled_auth
, disabled_enc
, disabled_mac
,
1386 STACK_OF(SSL_CIPHER
) *cipherstack
, *tmp_cipher_list
;
1388 CIPHER_ORDER
*co_list
= NULL
, *head
= NULL
, *tail
= NULL
, *curr
;
1389 const SSL_CIPHER
**ca_list
= NULL
;
1392 * Return with error if nothing to do.
1394 if (rule_str
== NULL
|| cipher_list
== NULL
|| cipher_list_by_id
== NULL
)
1396 #ifndef OPENSSL_NO_EC
1397 if (!check_suiteb_cipher_list(ssl_method
, c
, &rule_str
))
1402 * To reduce the work to do we only want to process the compiled
1403 * in algorithms, so we first get the mask of disabled ciphers.
1406 disabled_mkey
= disabled_mkey_mask
;
1407 disabled_auth
= disabled_auth_mask
;
1408 disabled_enc
= disabled_enc_mask
;
1409 disabled_mac
= disabled_mac_mask
;
1413 * Now we have to collect the available ciphers from the compiled
1414 * in ciphers. We cannot get more than the number compiled in, so
1415 * it is used for allocation.
1417 num_of_ciphers
= ssl_method
->num_ciphers();
1419 co_list
= OPENSSL_malloc(sizeof(*co_list
) * num_of_ciphers
);
1420 if (co_list
== NULL
) {
1421 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
1422 return (NULL
); /* Failure */
1425 ssl_cipher_collect_ciphers(ssl_method
, num_of_ciphers
,
1426 disabled_mkey
, disabled_auth
, disabled_enc
,
1427 disabled_mac
, disabled_ssl
, co_list
, &head
,
1430 /* Now arrange all ciphers by preference: */
1433 * Everything else being equal, prefer ephemeral ECDH over other key
1434 * exchange mechanisms
1436 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
,
1438 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
,
1441 /* AES is our preferred symmetric cipher */
1442 ssl_cipher_apply_rule(0, 0, 0, SSL_AES
, 0, 0, 0, CIPHER_ADD
, -1, &head
,
1445 /* Temporarily enable everything else for sorting */
1446 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
, &tail
);
1448 /* Low priority for MD5 */
1449 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5
, 0, 0, CIPHER_ORD
, -1, &head
,
1453 * Move anonymous ciphers to the end. Usually, these will remain
1454 * disabled. (For applications that allow them, they aren't too bad, but
1455 * we prefer authenticated ciphers.)
1457 ssl_cipher_apply_rule(0, 0, SSL_aNULL
, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1460 /* Move ciphers without forward secrecy to the end */
1461 ssl_cipher_apply_rule(0, 0, SSL_aECDH
, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1464 * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1,
1467 ssl_cipher_apply_rule(0, SSL_kRSA
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1469 ssl_cipher_apply_rule(0, SSL_kPSK
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1472 /* RC4 is sort-of broken -- move the the end */
1473 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4
, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1477 * Now sort by symmetric encryption strength. The above ordering remains
1478 * in force within each class
1480 if (!ssl_cipher_strength_sort(&head
, &tail
)) {
1481 OPENSSL_free(co_list
);
1485 /* Now disable everything (maintaining the ordering!) */
1486 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
, &tail
);
1489 * We also need cipher aliases for selecting based on the rule_str.
1490 * There might be two types of entries in the rule_str: 1) names
1491 * of ciphers themselves 2) aliases for groups of ciphers.
1492 * For 1) we need the available ciphers and for 2) the cipher
1493 * groups of cipher_aliases added together in one list (otherwise
1494 * we would be happy with just the cipher_aliases table).
1496 num_of_group_aliases
= OSSL_NELEM(cipher_aliases
);
1497 num_of_alias_max
= num_of_ciphers
+ num_of_group_aliases
+ 1;
1498 ca_list
= OPENSSL_malloc(sizeof(*ca_list
) * num_of_alias_max
);
1499 if (ca_list
== NULL
) {
1500 OPENSSL_free(co_list
);
1501 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
1502 return (NULL
); /* Failure */
1504 ssl_cipher_collect_aliases(ca_list
, num_of_group_aliases
,
1505 disabled_mkey
, disabled_auth
, disabled_enc
,
1506 disabled_mac
, disabled_ssl
, head
);
1509 * If the rule_string begins with DEFAULT, apply the default rule
1510 * before using the (possibly available) additional rules.
1514 if (strncmp(rule_str
, "DEFAULT", 7) == 0) {
1515 ok
= ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST
,
1516 &head
, &tail
, ca_list
, c
);
1522 if (ok
&& (strlen(rule_p
) > 0))
1523 ok
= ssl_cipher_process_rulestr(rule_p
, &head
, &tail
, ca_list
, c
);
1525 OPENSSL_free(ca_list
); /* Not needed anymore */
1527 if (!ok
) { /* Rule processing failure */
1528 OPENSSL_free(co_list
);
1533 * Allocate new "cipherstack" for the result, return with error
1534 * if we cannot get one.
1536 if ((cipherstack
= sk_SSL_CIPHER_new_null()) == NULL
) {
1537 OPENSSL_free(co_list
);
1542 * The cipher selection for the list is done. The ciphers are added
1543 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1545 for (curr
= head
; curr
!= NULL
; curr
= curr
->next
) {
1547 && (!FIPS_mode() || curr
->cipher
->algo_strength
& SSL_FIPS
)) {
1548 if (!sk_SSL_CIPHER_push(cipherstack
, curr
->cipher
)) {
1549 OPENSSL_free(co_list
);
1550 sk_SSL_CIPHER_free(cipherstack
);
1554 fprintf(stderr
, "<%s>\n", curr
->cipher
->name
);
1558 OPENSSL_free(co_list
); /* Not needed any longer */
1560 tmp_cipher_list
= sk_SSL_CIPHER_dup(cipherstack
);
1561 if (tmp_cipher_list
== NULL
) {
1562 sk_SSL_CIPHER_free(cipherstack
);
1565 sk_SSL_CIPHER_free(*cipher_list
);
1566 *cipher_list
= cipherstack
;
1567 if (*cipher_list_by_id
!= NULL
)
1568 sk_SSL_CIPHER_free(*cipher_list_by_id
);
1569 *cipher_list_by_id
= tmp_cipher_list
;
1570 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id
,
1571 ssl_cipher_ptr_id_cmp
);
1573 sk_SSL_CIPHER_sort(*cipher_list_by_id
);
1574 return (cipherstack
);
1577 char *SSL_CIPHER_description(const SSL_CIPHER
*cipher
, char *buf
, int len
)
1579 int is_export
, pkl
, kl
;
1580 const char *ver
, *exp_str
;
1581 const char *kx
, *au
, *enc
, *mac
;
1582 unsigned long alg_mkey
, alg_auth
, alg_enc
, alg_mac
, alg_ssl
;
1583 static const char *format
=
1584 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1586 alg_mkey
= cipher
->algorithm_mkey
;
1587 alg_auth
= cipher
->algorithm_auth
;
1588 alg_enc
= cipher
->algorithm_enc
;
1589 alg_mac
= cipher
->algorithm_mac
;
1590 alg_ssl
= cipher
->algorithm_ssl
;
1592 is_export
= SSL_C_IS_EXPORT(cipher
);
1593 pkl
= SSL_C_EXPORT_PKEYLENGTH(cipher
);
1594 kl
= SSL_C_EXPORT_KEYLENGTH(cipher
);
1595 exp_str
= is_export
? " export" : "";
1597 if (alg_ssl
& SSL_SSLV3
)
1599 else if (alg_ssl
& SSL_TLSV1_2
)
1606 kx
= is_export
? (pkl
== 512 ? "RSA(512)" : "RSA(1024)") : "RSA";
1615 kx
= is_export
? (pkl
== 512 ? "DH(512)" : "DH(1024)") : "DH";
1683 enc
= (is_export
&& kl
== 5) ? "DES(40)" : "DES(56)";
1689 enc
= is_export
? (kl
== 5 ? "RC4(40)" : "RC4(56)") : "RC4(128)";
1692 enc
= is_export
? (kl
== 5 ? "RC2(40)" : "RC2(56)") : "RC2(128)";
1707 enc
= "AESGCM(128)";
1710 enc
= "AESGCM(256)";
1712 case SSL_CAMELLIA128
:
1713 enc
= "Camellia(128)";
1715 case SSL_CAMELLIA256
:
1716 enc
= "Camellia(256)";
1721 case SSL_eGOST2814789CNT
:
1722 enc
= "GOST89(256)";
1758 buf
= OPENSSL_malloc(len
);
1760 return ("OPENSSL_malloc Error");
1761 } else if (len
< 128)
1762 return ("Buffer too small");
1764 BIO_snprintf(buf
, len
, format
, cipher
->name
, ver
, kx
, au
, enc
, mac
,
1770 char *SSL_CIPHER_get_version(const SSL_CIPHER
*c
)
1776 i
= (int)(c
->id
>> 24L);
1778 return ("TLSv1/SSLv3");
1783 /* return the actual cipher being used */
1784 const char *SSL_CIPHER_get_name(const SSL_CIPHER
*c
)
1791 /* number of bits for symmetric cipher */
1792 int SSL_CIPHER_get_bits(const SSL_CIPHER
*c
, int *alg_bits
)
1797 if (alg_bits
!= NULL
)
1798 *alg_bits
= c
->alg_bits
;
1799 ret
= c
->strength_bits
;
1804 unsigned long SSL_CIPHER_get_id(const SSL_CIPHER
*c
)
1809 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
)
1814 if ((n
== 0) || (sk
== NULL
))
1816 nn
= sk_SSL_COMP_num(sk
);
1817 for (i
= 0; i
< nn
; i
++) {
1818 ctmp
= sk_SSL_COMP_value(sk
, i
);
1825 #ifdef OPENSSL_NO_COMP
1826 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1830 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1835 void SSL_COMP_free_compression_methods(void)
1838 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1844 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1846 load_builtin_compressions();
1847 return (ssl_comp_methods
);
1850 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1853 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1854 ssl_comp_methods
= meths
;
1858 static void cmeth_free(SSL_COMP
*cm
)
1863 void SSL_COMP_free_compression_methods(void)
1865 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1866 ssl_comp_methods
= NULL
;
1867 sk_SSL_COMP_pop_free(old_meths
, cmeth_free
);
1870 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1874 if (cm
== NULL
|| COMP_get_type(cm
) == NID_undef
)
1878 * According to draft-ietf-tls-compression-04.txt, the
1879 * compression number ranges should be the following:
1881 * 0 to 63: methods defined by the IETF
1882 * 64 to 192: external party methods assigned by IANA
1883 * 193 to 255: reserved for private use
1885 if (id
< 193 || id
> 255) {
1886 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,
1887 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE
);
1892 comp
= OPENSSL_malloc(sizeof(*comp
));
1895 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
, ERR_R_MALLOC_FAILURE
);
1901 load_builtin_compressions();
1902 if (ssl_comp_methods
&& sk_SSL_COMP_find(ssl_comp_methods
, comp
) >= 0) {
1905 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,
1906 SSL_R_DUPLICATE_COMPRESSION_ID
);
1908 } else if ((ssl_comp_methods
== NULL
)
1909 || !sk_SSL_COMP_push(ssl_comp_methods
, comp
)) {
1912 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
, ERR_R_MALLOC_FAILURE
);
1921 const char *SSL_COMP_get_name(const COMP_METHOD
*comp
)
1923 #ifndef OPENSSL_NO_COMP
1924 return comp
? COMP_get_name(comp
) : NULL
;
1930 /* For a cipher return the index corresponding to the certificate type */
1931 int ssl_cipher_get_cert_index(const SSL_CIPHER
*c
)
1933 unsigned long alg_k
, alg_a
;
1935 alg_k
= c
->algorithm_mkey
;
1936 alg_a
= c
->algorithm_auth
;
1938 if (alg_k
& (SSL_kECDHr
| SSL_kECDHe
)) {
1940 * we don't need to look at SSL_kECDHE since no certificate is needed
1941 * for anon ECDH and for authenticated ECDHE, the check for the auth
1942 * algorithm will set i correctly NOTE: For ECDH-RSA, we need an ECC
1943 * not an RSA cert but for ECDHE-RSA we need an RSA cert. Placing the
1944 * checks for SSL_kECDH before RSA checks ensures the correct cert is
1947 return SSL_PKEY_ECC
;
1948 } else if (alg_a
& SSL_aECDSA
)
1949 return SSL_PKEY_ECC
;
1950 else if (alg_k
& SSL_kDHr
)
1951 return SSL_PKEY_DH_RSA
;
1952 else if (alg_k
& SSL_kDHd
)
1953 return SSL_PKEY_DH_DSA
;
1954 else if (alg_a
& SSL_aDSS
)
1955 return SSL_PKEY_DSA_SIGN
;
1956 else if (alg_a
& SSL_aRSA
)
1957 return SSL_PKEY_RSA_ENC
;
1958 else if (alg_a
& SSL_aGOST01
)
1959 return SSL_PKEY_GOST01
;
1963 const SSL_CIPHER
*ssl_get_cipher_by_char(SSL
*ssl
, const unsigned char *ptr
)
1965 const SSL_CIPHER
*c
;
1966 c
= ssl
->method
->get_cipher_by_char(ptr
);
1967 if (c
== NULL
|| c
->valid
== 0)
1972 const SSL_CIPHER
*SSL_CIPHER_find(SSL
*ssl
, const unsigned char *ptr
)
1974 return ssl
->method
->get_cipher_by_char(ptr
);
1977 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER
*c
)
1982 i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, c
->algorithm_enc
);
1985 return ssl_cipher_table_cipher
[i
].nid
;
1988 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER
*c
)
1993 i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
1996 return ssl_cipher_table_mac
[i
].nid
;