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_aGOST94, 0, 0, SSL_aGOST94, 0, 0, 0, 0, 0, 0, 0},
335 {0, SSL_TXT_aGOST01, 0, 0, SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0},
336 {0, SSL_TXT_aGOST, 0, 0, SSL_aGOST94 | SSL_aGOST01, 0, 0, 0, 0, 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_AES128, 0, 0, 0, SSL_AES128 | SSL_AES128GCM, 0, 0, 0, 0, 0,
361 {0, SSL_TXT_AES256, 0, 0, 0, SSL_AES256 | SSL_AES256GCM, 0, 0, 0, 0, 0,
363 {0, SSL_TXT_AES, 0, 0, 0, SSL_AES, 0, 0, 0, 0, 0, 0},
364 {0, SSL_TXT_AES_GCM, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM, 0, 0, 0, 0,
366 {0, SSL_TXT_CAMELLIA128, 0, 0, 0, SSL_CAMELLIA128, 0, 0, 0, 0, 0, 0},
367 {0, SSL_TXT_CAMELLIA256, 0, 0, 0, SSL_CAMELLIA256, 0, 0, 0, 0, 0, 0},
368 {0, SSL_TXT_CAMELLIA, 0, 0, 0, SSL_CAMELLIA128 | SSL_CAMELLIA256, 0, 0, 0,
372 {0, SSL_TXT_MD5, 0, 0, 0, 0, SSL_MD5, 0, 0, 0, 0, 0},
373 {0, SSL_TXT_SHA1, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
374 {0, SSL_TXT_SHA, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
375 {0, SSL_TXT_GOST94, 0, 0, 0, 0, SSL_GOST94, 0, 0, 0, 0, 0},
376 {0, SSL_TXT_GOST89MAC, 0, 0, 0, 0, SSL_GOST89MAC, 0, 0, 0, 0, 0},
377 {0, SSL_TXT_SHA256, 0, 0, 0, 0, SSL_SHA256, 0, 0, 0, 0, 0},
378 {0, SSL_TXT_SHA384, 0, 0, 0, 0, SSL_SHA384, 0, 0, 0, 0, 0},
380 /* protocol version aliases */
381 {0, SSL_TXT_SSLV3, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0},
382 {0, SSL_TXT_TLSV1, 0, 0, 0, 0, 0, SSL_TLSV1, 0, 0, 0, 0},
383 {0, SSL_TXT_TLSV1_2, 0, 0, 0, 0, 0, SSL_TLSV1_2, 0, 0, 0, 0},
386 {0, SSL_TXT_EXP, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0},
387 {0, SSL_TXT_EXPORT, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0},
389 /* strength classes */
390 {0, SSL_TXT_EXP40, 0, 0, 0, 0, 0, 0, SSL_EXP40, 0, 0, 0},
391 {0, SSL_TXT_EXP56, 0, 0, 0, 0, 0, 0, SSL_EXP56, 0, 0, 0},
392 {0, SSL_TXT_LOW, 0, 0, 0, 0, 0, 0, SSL_LOW, 0, 0, 0},
393 {0, SSL_TXT_MEDIUM, 0, 0, 0, 0, 0, 0, SSL_MEDIUM, 0, 0, 0},
394 {0, SSL_TXT_HIGH, 0, 0, 0, 0, 0, 0, SSL_HIGH, 0, 0, 0},
395 /* FIPS 140-2 approved ciphersuite */
396 {0, SSL_TXT_FIPS, 0, 0, 0, ~SSL_eNULL, 0, 0, SSL_FIPS, 0, 0, 0},
398 /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */
399 {0, SSL3_TXT_EDH_DSS_DES_40_CBC_SHA, 0,
400 SSL_kDHE, SSL_aDSS, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_EXPORT | SSL_EXP40,
402 {0, SSL3_TXT_EDH_DSS_DES_64_CBC_SHA, 0,
403 SSL_kDHE, SSL_aDSS, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_NOT_EXP | SSL_LOW,
405 {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA, 0,
406 SSL_kDHE, SSL_aDSS, SSL_3DES, SSL_SHA1, SSL_SSLV3,
407 SSL_NOT_EXP | SSL_HIGH | SSL_FIPS, 0, 0, 0,},
408 {0, SSL3_TXT_EDH_RSA_DES_40_CBC_SHA, 0,
409 SSL_kDHE, SSL_aRSA, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_EXPORT | SSL_EXP40,
411 {0, SSL3_TXT_EDH_RSA_DES_64_CBC_SHA, 0,
412 SSL_kDHE, SSL_aRSA, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_NOT_EXP | SSL_LOW,
414 {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA, 0,
415 SSL_kDHE, SSL_aRSA, SSL_3DES, SSL_SHA1, SSL_SSLV3,
416 SSL_NOT_EXP | SSL_HIGH | SSL_FIPS, 0, 0, 0,},
421 * Search for public key algorithm with given name and return its pkey_id if
422 * it is available. Otherwise return 0
424 #ifdef OPENSSL_NO_ENGINE
426 static int get_optional_pkey_id(const char *pkey_name)
428 const EVP_PKEY_ASN1_METHOD *ameth;
430 ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1);
432 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
439 static int get_optional_pkey_id(const char *pkey_name)
441 const EVP_PKEY_ASN1_METHOD *ameth;
442 ENGINE *tmpeng = NULL;
444 ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1);
446 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
449 ENGINE_finish(tmpeng);
455 /* masks of disabled algorithms */
456 static unsigned long disabled_enc_mask;
457 static unsigned long disabled_mac_mask;
458 static unsigned long disabled_mkey_mask;
459 static unsigned long disabled_auth_mask;
461 void ssl_load_ciphers(void)
464 const ssl_cipher_table *t;
465 disabled_enc_mask = 0;
466 for (i = 0, t = ssl_cipher_table_cipher; i < SSL_ENC_NUM_IDX; i++, t++) {
467 if (t->nid == NID_undef) {
468 ssl_cipher_methods[i] = NULL;
470 const EVP_CIPHER *cipher = EVP_get_cipherbynid(t->nid);
471 ssl_cipher_methods[i] = cipher;
473 disabled_enc_mask |= t->mask;
476 #ifdef SSL_FORBID_ENULL
477 disabled_enc_mask |= SSL_eNULL;
479 disabled_mac_mask = 0;
480 for (i = 0, t = ssl_cipher_table_mac; i < SSL_MD_NUM_IDX; i++, t++) {
481 const EVP_MD *md = EVP_get_digestbynid(t->nid);
482 ssl_digest_methods[i] = md;
484 disabled_mac_mask |= t->mask;
486 ssl_mac_secret_size[i] = EVP_MD_size(md);
487 OPENSSL_assert(ssl_mac_secret_size[i] >= 0);
490 /* Make sure we can access MD5 and SHA1 */
491 OPENSSL_assert(ssl_digest_methods[SSL_MD_MD5_IDX] != NULL);
492 OPENSSL_assert(ssl_digest_methods[SSL_MD_SHA1_IDX] != NULL);
494 disabled_mkey_mask = 0;
495 disabled_auth_mask = 0;
497 #ifdef OPENSSL_NO_RSA
498 disabled_mkey_mask |= SSL_kRSA | SSL_kRSAPSK;
499 disabled_auth_mask |= SSL_aRSA;
501 #ifdef OPENSSL_NO_DSA
502 disabled_auth_mask |= SSL_aDSS;
505 disabled_mkey_mask |= SSL_kDHr | SSL_kDHd | SSL_kDHE | SSL_kDHEPSK;
506 disabled_auth_mask |= SSL_aDH;
509 disabled_mkey_mask |= SSL_kECDHe | SSL_kECDHr | SSL_kECDHEPSK;
510 disabled_auth_mask |= SSL_aECDSA | SSL_aECDH;
512 #ifdef OPENSSL_NO_PSK
513 disabled_mkey_mask |= SSL_PSK;
514 disabled_auth_mask |= SSL_aPSK;
516 #ifdef OPENSSL_NO_SRP
517 disabled_mkey_mask |= SSL_kSRP;
521 * Check for presence of GOST 34.10 algorithms, and if they are not
522 * present, disable appropriate auth and key exchange
524 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac");
525 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) {
526 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32;
528 disabled_mac_mask |= SSL_GOST89MAC;
531 if (!get_optional_pkey_id("gost94"))
532 disabled_auth_mask |= SSL_aGOST94;
533 if (!get_optional_pkey_id("gost2001"))
534 disabled_auth_mask |= SSL_aGOST01;
536 * Disable GOST key exchange if no GOST signature algs are available *
538 if ((disabled_auth_mask & (SSL_aGOST94 | SSL_aGOST01)) == (SSL_aGOST94 | SSL_aGOST01))
539 disabled_mkey_mask |= SSL_kGOST;
542 #ifndef OPENSSL_NO_COMP
544 static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b)
546 return ((*a)->id - (*b)->id);
549 static void load_builtin_compressions(void)
551 int got_write_lock = 0;
553 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
554 if (ssl_comp_methods == NULL) {
555 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
556 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
559 if (ssl_comp_methods == NULL) {
560 SSL_COMP *comp = NULL;
561 COMP_METHOD *method = COMP_zlib();
564 ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp);
565 if (COMP_get_type(method) != NID_undef
566 && ssl_comp_methods != NULL) {
567 comp = OPENSSL_malloc(sizeof(*comp));
569 comp->method = method;
570 comp->id = SSL_COMP_ZLIB_IDX;
571 comp->name = COMP_get_name(method);
572 sk_SSL_COMP_push(ssl_comp_methods, comp);
573 sk_SSL_COMP_sort(ssl_comp_methods);
581 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
583 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
587 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
588 const EVP_MD **md, int *mac_pkey_type,
589 int *mac_secret_size, SSL_COMP **comp, int use_etm)
599 #ifndef OPENSSL_NO_COMP
600 load_builtin_compressions();
604 ctmp.id = s->compress_meth;
605 if (ssl_comp_methods != NULL) {
606 i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp);
608 *comp = sk_SSL_COMP_value(ssl_comp_methods, i);
612 /* If were only interested in comp then return success */
613 if ((enc == NULL) && (md == NULL))
617 if ((enc == NULL) || (md == NULL))
620 i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc);
625 if (i == SSL_ENC_NULL_IDX)
626 *enc = EVP_enc_null();
628 *enc = ssl_cipher_methods[i];
631 i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac);
634 if (mac_pkey_type != NULL)
635 *mac_pkey_type = NID_undef;
636 if (mac_secret_size != NULL)
637 *mac_secret_size = 0;
638 if (c->algorithm_mac == SSL_AEAD)
639 mac_pkey_type = NULL;
641 *md = ssl_digest_methods[i];
642 if (mac_pkey_type != NULL)
643 *mac_pkey_type = ssl_mac_pkey_id[i];
644 if (mac_secret_size != NULL)
645 *mac_secret_size = ssl_mac_secret_size[i];
648 if ((*enc != NULL) &&
649 (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER))
650 && (!mac_pkey_type || *mac_pkey_type != NID_undef)) {
651 const EVP_CIPHER *evp;
656 if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR ||
657 s->ssl_version < TLS1_VERSION)
663 if (c->algorithm_enc == SSL_RC4 &&
664 c->algorithm_mac == SSL_MD5 &&
665 (evp = EVP_get_cipherbyname("RC4-HMAC-MD5")))
666 *enc = evp, *md = NULL;
667 else if (c->algorithm_enc == SSL_AES128 &&
668 c->algorithm_mac == SSL_SHA1 &&
669 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
670 *enc = evp, *md = NULL;
671 else if (c->algorithm_enc == SSL_AES256 &&
672 c->algorithm_mac == SSL_SHA1 &&
673 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
674 *enc = evp, *md = NULL;
675 else if (c->algorithm_enc == SSL_AES128 &&
676 c->algorithm_mac == SSL_SHA256 &&
677 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA256")))
678 *enc = evp, *md = NULL;
679 else if (c->algorithm_enc == SSL_AES256 &&
680 c->algorithm_mac == SSL_SHA256 &&
681 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA256")))
682 *enc = evp, *md = NULL;
688 int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md)
690 if (idx < 0 || idx >= SSL_MD_NUM_IDX) {
693 *mask = ssl_handshake_digest_flag[idx];
695 *md = ssl_digest_methods[idx];
701 #define ITEM_SEP(a) \
702 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
704 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
711 if (curr->prev != NULL)
712 curr->prev->next = curr->next;
713 if (curr->next != NULL)
714 curr->next->prev = curr->prev;
715 (*tail)->next = curr;
721 static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
728 if (curr->next != NULL)
729 curr->next->prev = curr->prev;
730 if (curr->prev != NULL)
731 curr->prev->next = curr->next;
732 (*head)->prev = curr;
738 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
740 unsigned long disabled_mkey,
741 unsigned long disabled_auth,
742 unsigned long disabled_enc,
743 unsigned long disabled_mac,
744 unsigned long disabled_ssl,
745 CIPHER_ORDER *co_list,
746 CIPHER_ORDER **head_p,
747 CIPHER_ORDER **tail_p)
753 * We have num_of_ciphers descriptions compiled in, depending on the
754 * method selected (SSLv3, TLSv1 etc).
755 * These will later be sorted in a linked list with at most num
759 /* Get the initial list of ciphers */
760 co_list_num = 0; /* actual count of ciphers */
761 for (i = 0; i < num_of_ciphers; i++) {
762 c = ssl_method->get_cipher(i);
763 /* drop those that use any of that is not available */
764 if ((c != NULL) && c->valid &&
765 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) &&
766 !(c->algorithm_mkey & disabled_mkey) &&
767 !(c->algorithm_auth & disabled_auth) &&
768 !(c->algorithm_enc & disabled_enc) &&
769 !(c->algorithm_mac & disabled_mac) &&
770 !(c->algorithm_ssl & disabled_ssl)) {
771 co_list[co_list_num].cipher = c;
772 co_list[co_list_num].next = NULL;
773 co_list[co_list_num].prev = NULL;
774 co_list[co_list_num].active = 0;
777 * if (!sk_push(ca_list,(char *)c)) goto err;
783 * Prepare linked list from list entries
785 if (co_list_num > 0) {
786 co_list[0].prev = NULL;
788 if (co_list_num > 1) {
789 co_list[0].next = &co_list[1];
791 for (i = 1; i < co_list_num - 1; i++) {
792 co_list[i].prev = &co_list[i - 1];
793 co_list[i].next = &co_list[i + 1];
796 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
799 co_list[co_list_num - 1].next = NULL;
801 *head_p = &co_list[0];
802 *tail_p = &co_list[co_list_num - 1];
806 static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list,
807 int num_of_group_aliases,
808 unsigned long disabled_mkey,
809 unsigned long disabled_auth,
810 unsigned long disabled_enc,
811 unsigned long disabled_mac,
812 unsigned long disabled_ssl,
815 CIPHER_ORDER *ciph_curr;
816 const SSL_CIPHER **ca_curr;
818 unsigned long mask_mkey = ~disabled_mkey;
819 unsigned long mask_auth = ~disabled_auth;
820 unsigned long mask_enc = ~disabled_enc;
821 unsigned long mask_mac = ~disabled_mac;
822 unsigned long mask_ssl = ~disabled_ssl;
825 * First, add the real ciphers as already collected
829 while (ciph_curr != NULL) {
830 *ca_curr = ciph_curr->cipher;
832 ciph_curr = ciph_curr->next;
836 * Now we add the available ones from the cipher_aliases[] table.
837 * They represent either one or more algorithms, some of which
838 * in any affected category must be supported (set in enabled_mask),
839 * or represent a cipher strength value (will be added in any case because algorithms=0).
841 for (i = 0; i < num_of_group_aliases; i++) {
842 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey;
843 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth;
844 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc;
845 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac;
846 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl;
849 if ((algorithm_mkey & mask_mkey) == 0)
853 if ((algorithm_auth & mask_auth) == 0)
857 if ((algorithm_enc & mask_enc) == 0)
861 if ((algorithm_mac & mask_mac) == 0)
865 if ((algorithm_ssl & mask_ssl) == 0)
868 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
872 *ca_curr = NULL; /* end of list */
875 static void ssl_cipher_apply_rule(unsigned long cipher_id,
876 unsigned long alg_mkey,
877 unsigned long alg_auth,
878 unsigned long alg_enc,
879 unsigned long alg_mac,
880 unsigned long alg_ssl,
881 unsigned long algo_strength, int rule,
882 int strength_bits, CIPHER_ORDER **head_p,
883 CIPHER_ORDER **tail_p)
885 CIPHER_ORDER *head, *tail, *curr, *next, *last;
886 const SSL_CIPHER *cp;
891 "Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
892 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl,
893 algo_strength, strength_bits);
896 if (rule == CIPHER_DEL)
897 reverse = 1; /* needed to maintain sorting between
898 * currently deleted ciphers */
921 next = reverse ? curr->prev : curr->next;
926 * Selection criteria is either the value of strength_bits
927 * or the algorithms used.
929 if (strength_bits >= 0) {
930 if (strength_bits != cp->strength_bits)
935 "\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n",
936 cp->name, cp->algorithm_mkey, cp->algorithm_auth,
937 cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl,
940 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
941 if (cipher_id && cipher_id != cp->id)
944 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
946 if (alg_auth && !(alg_auth & cp->algorithm_auth))
948 if (alg_enc && !(alg_enc & cp->algorithm_enc))
950 if (alg_mac && !(alg_mac & cp->algorithm_mac))
952 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
954 if ((algo_strength & SSL_EXP_MASK)
955 && !(algo_strength & SSL_EXP_MASK & cp->algo_strength))
957 if ((algo_strength & SSL_STRONG_MASK)
958 && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength))
963 fprintf(stderr, "Action = %d\n", rule);
966 /* add the cipher if it has not been added yet. */
967 if (rule == CIPHER_ADD) {
970 ll_append_tail(&head, curr, &tail);
974 /* Move the added cipher to this location */
975 else if (rule == CIPHER_ORD) {
978 ll_append_tail(&head, curr, &tail);
980 } else if (rule == CIPHER_DEL) {
984 * most recently deleted ciphersuites get best positions for
985 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
986 * in reverse to maintain the order)
988 ll_append_head(&head, curr, &tail);
991 } else if (rule == CIPHER_KILL) {
996 curr->prev->next = curr->next;
1000 if (curr->next != NULL)
1001 curr->next->prev = curr->prev;
1002 if (curr->prev != NULL)
1003 curr->prev->next = curr->next;
1013 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
1014 CIPHER_ORDER **tail_p)
1016 int max_strength_bits, i, *number_uses;
1020 * This routine sorts the ciphers with descending strength. The sorting
1021 * must keep the pre-sorted sequence, so we apply the normal sorting
1022 * routine as '+' movement to the end of the list.
1024 max_strength_bits = 0;
1026 while (curr != NULL) {
1027 if (curr->active && (curr->cipher->strength_bits > max_strength_bits))
1028 max_strength_bits = curr->cipher->strength_bits;
1032 number_uses = OPENSSL_malloc(sizeof(int) * (max_strength_bits + 1));
1034 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE);
1037 memset(number_uses, 0, sizeof(int) * (max_strength_bits + 1));
1040 * Now find the strength_bits values actually used
1043 while (curr != NULL) {
1045 number_uses[curr->cipher->strength_bits]++;
1049 * Go through the list of used strength_bits values in descending
1052 for (i = max_strength_bits; i >= 0; i--)
1053 if (number_uses[i] > 0)
1054 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p,
1057 OPENSSL_free(number_uses);
1061 static int ssl_cipher_process_rulestr(const char *rule_str,
1062 CIPHER_ORDER **head_p,
1063 CIPHER_ORDER **tail_p,
1064 const SSL_CIPHER **ca_list, CERT *c)
1066 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl,
1068 const char *l, *buf;
1069 int j, multi, found, rule, retval, ok, buflen;
1070 unsigned long cipher_id = 0;
1083 } else if (ch == '+') {
1086 } else if (ch == '!') {
1089 } else if (ch == '@') {
1090 rule = CIPHER_SPECIAL;
1112 #ifndef CHARSET_EBCDIC
1113 while (((ch >= 'A') && (ch <= 'Z')) ||
1114 ((ch >= '0') && (ch <= '9')) ||
1115 ((ch >= 'a') && (ch <= 'z')) ||
1116 (ch == '-') || (ch == '.') || (ch == '='))
1118 while (isalnum(ch) || (ch == '-') || (ch == '.') || (ch == '='))
1127 * We hit something we cannot deal with,
1128 * it is no command or separator nor
1129 * alphanumeric, so we call this an error.
1131 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1132 SSL_R_INVALID_COMMAND);
1138 if (rule == CIPHER_SPECIAL) {
1139 found = 0; /* unused -- avoid compiler warning */
1140 break; /* special treatment */
1143 /* check for multi-part specification */
1151 * Now search for the cipher alias in the ca_list. Be careful
1152 * with the strncmp, because the "buflen" limitation
1153 * will make the rule "ADH:SOME" and the cipher
1154 * "ADH-MY-CIPHER" look like a match for buflen=3.
1155 * So additionally check whether the cipher name found
1156 * has the correct length. We can save a strlen() call:
1157 * just checking for the '\0' at the right place is
1158 * sufficient, we have to strncmp() anyway. (We cannot
1159 * use strcmp(), because buf is not '\0' terminated.)
1163 while (ca_list[j]) {
1164 if (strncmp(buf, ca_list[j]->name, buflen) == 0
1165 && (ca_list[j]->name[buflen] == '\0')) {
1173 break; /* ignore this entry */
1175 if (ca_list[j]->algorithm_mkey) {
1177 alg_mkey &= ca_list[j]->algorithm_mkey;
1183 alg_mkey = ca_list[j]->algorithm_mkey;
1186 if (ca_list[j]->algorithm_auth) {
1188 alg_auth &= ca_list[j]->algorithm_auth;
1194 alg_auth = ca_list[j]->algorithm_auth;
1197 if (ca_list[j]->algorithm_enc) {
1199 alg_enc &= ca_list[j]->algorithm_enc;
1205 alg_enc = ca_list[j]->algorithm_enc;
1208 if (ca_list[j]->algorithm_mac) {
1210 alg_mac &= ca_list[j]->algorithm_mac;
1216 alg_mac = ca_list[j]->algorithm_mac;
1219 if (ca_list[j]->algo_strength & SSL_EXP_MASK) {
1220 if (algo_strength & SSL_EXP_MASK) {
1222 (ca_list[j]->algo_strength & SSL_EXP_MASK) |
1224 if (!(algo_strength & SSL_EXP_MASK)) {
1229 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK;
1232 if (ca_list[j]->algo_strength & SSL_STRONG_MASK) {
1233 if (algo_strength & SSL_STRONG_MASK) {
1235 (ca_list[j]->algo_strength & SSL_STRONG_MASK) |
1237 if (!(algo_strength & SSL_STRONG_MASK)) {
1243 ca_list[j]->algo_strength & SSL_STRONG_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 (strcmp(*prule_str, "SUITEB128") == 0)
1326 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS;
1327 else if (strcmp(*prule_str, "SUITEB128ONLY") == 0)
1328 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS_ONLY;
1329 else if (strcmp(*prule_str, "SUITEB128C2") == 0) {
1331 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS;
1332 } else if (strcmp(*prule_str, "SUITEB192") == 0)
1333 suiteb_flags = SSL_CERT_FLAG_SUITEB_192_LOS;
1336 c->cert_flags &= ~SSL_CERT_FLAG_SUITEB_128_LOS;
1337 c->cert_flags |= suiteb_flags;
1339 suiteb_flags = c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS;
1343 /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */
1345 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)) {
1346 if (meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
1347 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1348 SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
1350 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1351 SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE);
1354 # ifndef OPENSSL_NO_EC
1355 switch (suiteb_flags) {
1356 case SSL_CERT_FLAG_SUITEB_128_LOS:
1358 *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384";
1361 "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384";
1363 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY:
1364 *prule_str = "ECDHE-ECDSA-AES128-GCM-SHA256";
1366 case SSL_CERT_FLAG_SUITEB_192_LOS:
1367 *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384";
1370 /* Set auto ECDH parameter determination */
1371 c->ecdh_tmp_auto = 1;
1374 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1375 SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE);
1381 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER)
1382 **cipher_list, STACK_OF(SSL_CIPHER)
1383 **cipher_list_by_id,
1384 const char *rule_str, CERT *c)
1386 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1387 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac,
1389 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1391 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1392 const SSL_CIPHER **ca_list = NULL;
1395 * Return with error if nothing to do.
1397 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1399 #ifndef OPENSSL_NO_EC
1400 if (!check_suiteb_cipher_list(ssl_method, c, &rule_str))
1405 * To reduce the work to do we only want to process the compiled
1406 * in algorithms, so we first get the mask of disabled ciphers.
1409 disabled_mkey = disabled_mkey_mask;
1410 disabled_auth = disabled_auth_mask;
1411 disabled_enc = disabled_enc_mask;
1412 disabled_mac = disabled_mac_mask;
1416 * Now we have to collect the available ciphers from the compiled
1417 * in ciphers. We cannot get more than the number compiled in, so
1418 * it is used for allocation.
1420 num_of_ciphers = ssl_method->num_ciphers();
1422 co_list = OPENSSL_malloc(sizeof(*co_list) * num_of_ciphers);
1423 if (co_list == NULL) {
1424 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1425 return (NULL); /* Failure */
1428 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1429 disabled_mkey, disabled_auth, disabled_enc,
1430 disabled_mac, disabled_ssl, co_list, &head,
1433 /* Now arrange all ciphers by preference: */
1436 * Everything else being equal, prefer ephemeral ECDH over other key
1437 * exchange mechanisms
1439 ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head,
1441 ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head,
1444 /* AES is our preferred symmetric cipher */
1445 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head,
1448 /* Temporarily enable everything else for sorting */
1449 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1451 /* Low priority for MD5 */
1452 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head,
1456 * Move anonymous ciphers to the end. Usually, these will remain
1457 * disabled. (For applications that allow them, they aren't too bad, but
1458 * we prefer authenticated ciphers.)
1460 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1463 /* Move ciphers without forward secrecy to the end */
1464 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1467 * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1,
1470 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1472 ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1475 /* RC4 is sort-of broken -- move the the end */
1476 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head,
1480 * Now sort by symmetric encryption strength. The above ordering remains
1481 * in force within each class
1483 if (!ssl_cipher_strength_sort(&head, &tail)) {
1484 OPENSSL_free(co_list);
1488 /* Now disable everything (maintaining the ordering!) */
1489 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1492 * We also need cipher aliases for selecting based on the rule_str.
1493 * There might be two types of entries in the rule_str: 1) names
1494 * of ciphers themselves 2) aliases for groups of ciphers.
1495 * For 1) we need the available ciphers and for 2) the cipher
1496 * groups of cipher_aliases added together in one list (otherwise
1497 * we would be happy with just the cipher_aliases table).
1499 num_of_group_aliases = OSSL_NELEM(cipher_aliases);
1500 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1501 ca_list = OPENSSL_malloc(sizeof(*ca_list) * num_of_alias_max);
1502 if (ca_list == NULL) {
1503 OPENSSL_free(co_list);
1504 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1505 return (NULL); /* Failure */
1507 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1508 disabled_mkey, disabled_auth, disabled_enc,
1509 disabled_mac, disabled_ssl, head);
1512 * If the rule_string begins with DEFAULT, apply the default rule
1513 * before using the (possibly available) additional rules.
1517 if (strncmp(rule_str, "DEFAULT", 7) == 0) {
1518 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1519 &head, &tail, ca_list, c);
1525 if (ok && (strlen(rule_p) > 0))
1526 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list, c);
1528 OPENSSL_free(ca_list); /* Not needed anymore */
1530 if (!ok) { /* Rule processing failure */
1531 OPENSSL_free(co_list);
1536 * Allocate new "cipherstack" for the result, return with error
1537 * if we cannot get one.
1539 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) {
1540 OPENSSL_free(co_list);
1545 * The cipher selection for the list is done. The ciphers are added
1546 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1548 for (curr = head; curr != NULL; curr = curr->next) {
1550 && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) {
1551 if (!sk_SSL_CIPHER_push(cipherstack, curr->cipher)) {
1552 OPENSSL_free(co_list);
1553 sk_SSL_CIPHER_free(cipherstack);
1557 fprintf(stderr, "<%s>\n", curr->cipher->name);
1561 OPENSSL_free(co_list); /* Not needed any longer */
1563 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1564 if (tmp_cipher_list == NULL) {
1565 sk_SSL_CIPHER_free(cipherstack);
1568 sk_SSL_CIPHER_free(*cipher_list);
1569 *cipher_list = cipherstack;
1570 if (*cipher_list_by_id != NULL)
1571 sk_SSL_CIPHER_free(*cipher_list_by_id);
1572 *cipher_list_by_id = tmp_cipher_list;
1573 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,
1574 ssl_cipher_ptr_id_cmp);
1576 sk_SSL_CIPHER_sort(*cipher_list_by_id);
1577 return (cipherstack);
1580 char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
1582 int is_export, pkl, kl;
1583 const char *ver, *exp_str;
1584 const char *kx, *au, *enc, *mac;
1585 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl;
1586 static const char *format =
1587 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1589 alg_mkey = cipher->algorithm_mkey;
1590 alg_auth = cipher->algorithm_auth;
1591 alg_enc = cipher->algorithm_enc;
1592 alg_mac = cipher->algorithm_mac;
1593 alg_ssl = cipher->algorithm_ssl;
1595 is_export = SSL_C_IS_EXPORT(cipher);
1596 pkl = SSL_C_EXPORT_PKEYLENGTH(cipher);
1597 kl = SSL_C_EXPORT_KEYLENGTH(cipher);
1598 exp_str = is_export ? " export" : "";
1600 if (alg_ssl & SSL_SSLV3)
1602 else if (alg_ssl & SSL_TLSV1_2)
1609 kx = is_export ? (pkl == 512 ? "RSA(512)" : "RSA(1024)") : "RSA";
1618 kx = is_export ? (pkl == 512 ? "DH(512)" : "DH(1024)") : "DH";
1689 enc = (is_export && kl == 5) ? "DES(40)" : "DES(56)";
1695 enc = is_export ? (kl == 5 ? "RC4(40)" : "RC4(56)") : "RC4(128)";
1698 enc = is_export ? (kl == 5 ? "RC2(40)" : "RC2(56)") : "RC2(128)";
1713 enc = "AESGCM(128)";
1716 enc = "AESGCM(256)";
1718 case SSL_CAMELLIA128:
1719 enc = "Camellia(128)";
1721 case SSL_CAMELLIA256:
1722 enc = "Camellia(256)";
1727 case SSL_eGOST2814789CNT:
1728 enc = "GOST89(256)";
1764 buf = OPENSSL_malloc(len);
1766 return ("OPENSSL_malloc Error");
1767 } else if (len < 128)
1768 return ("Buffer too small");
1770 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac,
1776 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1782 i = (int)(c->id >> 24L);
1784 return ("TLSv1/SSLv3");
1789 /* return the actual cipher being used */
1790 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1797 /* number of bits for symmetric cipher */
1798 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1803 if (alg_bits != NULL)
1804 *alg_bits = c->alg_bits;
1805 ret = c->strength_bits;
1810 unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c)
1815 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1820 if ((n == 0) || (sk == NULL))
1822 nn = sk_SSL_COMP_num(sk);
1823 for (i = 0; i < nn; i++) {
1824 ctmp = sk_SSL_COMP_value(sk, i);
1831 #ifdef OPENSSL_NO_COMP
1832 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1836 STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
1841 void SSL_COMP_free_compression_methods(void)
1844 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1850 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1852 load_builtin_compressions();
1853 return (ssl_comp_methods);
1856 STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
1859 STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods;
1860 ssl_comp_methods = meths;
1864 static void cmeth_free(SSL_COMP *cm)
1869 void SSL_COMP_free_compression_methods(void)
1871 STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods;
1872 ssl_comp_methods = NULL;
1873 sk_SSL_COMP_pop_free(old_meths, cmeth_free);
1876 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1880 if (cm == NULL || COMP_get_type(cm) == NID_undef)
1884 * According to draft-ietf-tls-compression-04.txt, the
1885 * compression number ranges should be the following:
1887 * 0 to 63: methods defined by the IETF
1888 * 64 to 192: external party methods assigned by IANA
1889 * 193 to 255: reserved for private use
1891 if (id < 193 || id > 255) {
1892 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1893 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1898 comp = OPENSSL_malloc(sizeof(*comp));
1901 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE);
1907 load_builtin_compressions();
1908 if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) {
1911 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1912 SSL_R_DUPLICATE_COMPRESSION_ID);
1914 } else if ((ssl_comp_methods == NULL)
1915 || !sk_SSL_COMP_push(ssl_comp_methods, comp)) {
1918 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE);
1927 const char *SSL_COMP_get_name(const COMP_METHOD *comp)
1929 #ifndef OPENSSL_NO_COMP
1930 return comp ? COMP_get_name(comp) : NULL;
1936 /* For a cipher return the index corresponding to the certificate type */
1937 int ssl_cipher_get_cert_index(const SSL_CIPHER *c)
1939 unsigned long alg_k, alg_a;
1941 alg_k = c->algorithm_mkey;
1942 alg_a = c->algorithm_auth;
1944 if (alg_k & (SSL_kECDHr | SSL_kECDHe)) {
1946 * we don't need to look at SSL_kECDHE since no certificate is needed
1947 * for anon ECDH and for authenticated ECDHE, the check for the auth
1948 * algorithm will set i correctly NOTE: For ECDH-RSA, we need an ECC
1949 * not an RSA cert but for ECDHE-RSA we need an RSA cert. Placing the
1950 * checks for SSL_kECDH before RSA checks ensures the correct cert is
1953 return SSL_PKEY_ECC;
1954 } else if (alg_a & SSL_aECDSA)
1955 return SSL_PKEY_ECC;
1956 else if (alg_k & SSL_kDHr)
1957 return SSL_PKEY_DH_RSA;
1958 else if (alg_k & SSL_kDHd)
1959 return SSL_PKEY_DH_DSA;
1960 else if (alg_a & SSL_aDSS)
1961 return SSL_PKEY_DSA_SIGN;
1962 else if (alg_a & SSL_aRSA)
1963 return SSL_PKEY_RSA_ENC;
1964 else if (alg_a & SSL_aGOST94)
1965 return SSL_PKEY_GOST94;
1966 else if (alg_a & SSL_aGOST01)
1967 return SSL_PKEY_GOST01;
1971 const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr)
1973 const SSL_CIPHER *c;
1974 c = ssl->method->get_cipher_by_char(ptr);
1975 if (c == NULL || c->valid == 0)
1980 const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr)
1982 return ssl->method->get_cipher_by_char(ptr);
1985 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c)
1990 i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc);
1993 return ssl_cipher_table_cipher[i].nid;
1996 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c)
2001 i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac);
2004 return ssl_cipher_table_mac[i].nid;