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 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX] = {
170 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
174 #define SSL_COMP_NULL_IDX 0
175 #define SSL_COMP_ZLIB_IDX 1
176 #define SSL_COMP_NUM_IDX 2
178 static STACK_OF(SSL_COMP) *ssl_comp_methods = NULL;
180 #define SSL_MD_MD5_IDX 0
181 #define SSL_MD_SHA1_IDX 1
182 #define SSL_MD_GOST94_IDX 2
183 #define SSL_MD_GOST89MAC_IDX 3
184 #define SSL_MD_SHA256_IDX 4
185 #define SSL_MD_SHA384_IDX 5
187 * Constant SSL_MAX_DIGEST equal to size of digests array should be defined
190 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
191 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX] = {
192 NULL, NULL, NULL, NULL, NULL, NULL
196 * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation
197 * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is
200 static int ssl_mac_pkey_id[SSL_MD_NUM_IDX] = {
201 EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef,
202 EVP_PKEY_HMAC, EVP_PKEY_HMAC
205 static int ssl_mac_secret_size[SSL_MD_NUM_IDX] = {
209 static int ssl_handshake_digest_flag[SSL_MD_NUM_IDX] = {
210 SSL_HANDSHAKE_MAC_MD5, SSL_HANDSHAKE_MAC_SHA,
211 SSL_HANDSHAKE_MAC_GOST94, 0, SSL_HANDSHAKE_MAC_SHA256,
212 SSL_HANDSHAKE_MAC_SHA384
216 #define CIPHER_KILL 2
219 #define CIPHER_SPECIAL 5
221 typedef struct cipher_order_st {
222 const SSL_CIPHER *cipher;
225 struct cipher_order_st *next, *prev;
228 static const SSL_CIPHER cipher_aliases[] = {
229 /* "ALL" doesn't include eNULL (must be specifically enabled) */
230 {0, SSL_TXT_ALL, 0, 0, 0, ~SSL_eNULL, 0, 0, 0, 0, 0, 0},
231 /* "COMPLEMENTOFALL" */
232 {0, SSL_TXT_CMPALL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
235 * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in
238 {0, SSL_TXT_CMPDEF, 0, 0, SSL_aNULL, ~SSL_eNULL, 0, ~SSL_SSLV2,
239 SSL_EXP_MASK, 0, 0, 0},
242 * key exchange aliases (some of those using only a single bit here
243 * combine multiple key exchange algs according to the RFCs, e.g. kEDH
244 * combines DHE_DSS and DHE_RSA)
246 {0, SSL_TXT_kRSA, 0, SSL_kRSA, 0, 0, 0, 0, 0, 0, 0, 0},
248 /* no such ciphersuites supported! */
249 {0, SSL_TXT_kDHr, 0, SSL_kDHr, 0, 0, 0, 0, 0, 0, 0, 0},
250 /* no such ciphersuites supported! */
251 {0, SSL_TXT_kDHd, 0, SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0},
252 /* no such ciphersuites supported! */
253 {0, SSL_TXT_kDH, 0, SSL_kDHr | SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0},
254 {0, SSL_TXT_kEDH, 0, SSL_kEDH, 0, 0, 0, 0, 0, 0, 0, 0},
255 {0, SSL_TXT_DH, 0, SSL_kDHr | SSL_kDHd | SSL_kEDH, 0, 0, 0, 0, 0, 0, 0,
258 {0, SSL_TXT_kKRB5, 0, SSL_kKRB5, 0, 0, 0, 0, 0, 0, 0, 0},
260 {0, SSL_TXT_kECDHr, 0, SSL_kECDHr, 0, 0, 0, 0, 0, 0, 0, 0},
261 {0, SSL_TXT_kECDHe, 0, SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0},
262 {0, SSL_TXT_kECDH, 0, SSL_kECDHr | SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0},
263 {0, SSL_TXT_kEECDH, 0, SSL_kEECDH, 0, 0, 0, 0, 0, 0, 0, 0},
264 {0, SSL_TXT_ECDH, 0, SSL_kECDHr | SSL_kECDHe | SSL_kEECDH, 0, 0, 0, 0, 0,
267 {0, SSL_TXT_kPSK, 0, SSL_kPSK, 0, 0, 0, 0, 0, 0, 0, 0},
268 {0, SSL_TXT_kSRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
269 {0, SSL_TXT_kGOST, 0, SSL_kGOST, 0, 0, 0, 0, 0, 0, 0, 0},
271 /* server authentication aliases */
272 {0, SSL_TXT_aRSA, 0, 0, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
273 {0, SSL_TXT_aDSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
274 {0, SSL_TXT_DSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
275 {0, SSL_TXT_aKRB5, 0, 0, SSL_aKRB5, 0, 0, 0, 0, 0, 0, 0},
276 {0, SSL_TXT_aNULL, 0, 0, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
277 /* no such ciphersuites supported! */
278 {0, SSL_TXT_aDH, 0, 0, SSL_aDH, 0, 0, 0, 0, 0, 0, 0},
279 {0, SSL_TXT_aECDH, 0, 0, SSL_aECDH, 0, 0, 0, 0, 0, 0, 0},
280 {0, SSL_TXT_aECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
281 {0, SSL_TXT_ECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
282 {0, SSL_TXT_aPSK, 0, 0, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0},
283 {0, SSL_TXT_aGOST94, 0, 0, SSL_aGOST94, 0, 0, 0, 0, 0, 0, 0},
284 {0, SSL_TXT_aGOST01, 0, 0, SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0},
285 {0, SSL_TXT_aGOST, 0, 0, SSL_aGOST94 | SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0},
286 {0, SSL_TXT_aSRP, 0, 0, SSL_aSRP, 0, 0, 0, 0, 0, 0, 0},
288 /* aliases combining key exchange and server authentication */
289 {0, SSL_TXT_EDH, 0, SSL_kEDH, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
290 {0, SSL_TXT_EECDH, 0, SSL_kEECDH, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
291 {0, SSL_TXT_NULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
292 {0, SSL_TXT_KRB5, 0, SSL_kKRB5, SSL_aKRB5, 0, 0, 0, 0, 0, 0, 0},
293 {0, SSL_TXT_RSA, 0, SSL_kRSA, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
294 {0, SSL_TXT_ADH, 0, SSL_kEDH, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
295 {0, SSL_TXT_AECDH, 0, SSL_kEECDH, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
296 {0, SSL_TXT_PSK, 0, SSL_kPSK, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0},
297 {0, SSL_TXT_SRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
299 /* symmetric encryption aliases */
300 {0, SSL_TXT_DES, 0, 0, 0, SSL_DES, 0, 0, 0, 0, 0, 0},
301 {0, SSL_TXT_3DES, 0, 0, 0, SSL_3DES, 0, 0, 0, 0, 0, 0},
302 {0, SSL_TXT_RC4, 0, 0, 0, SSL_RC4, 0, 0, 0, 0, 0, 0},
303 {0, SSL_TXT_RC2, 0, 0, 0, SSL_RC2, 0, 0, 0, 0, 0, 0},
304 {0, SSL_TXT_IDEA, 0, 0, 0, SSL_IDEA, 0, 0, 0, 0, 0, 0},
305 {0, SSL_TXT_SEED, 0, 0, 0, SSL_SEED, 0, 0, 0, 0, 0, 0},
306 {0, SSL_TXT_eNULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
307 {0, SSL_TXT_AES128, 0, 0, 0, SSL_AES128 | SSL_AES128GCM, 0, 0, 0, 0, 0,
309 {0, SSL_TXT_AES256, 0, 0, 0, SSL_AES256 | SSL_AES256GCM, 0, 0, 0, 0, 0,
311 {0, SSL_TXT_AES, 0, 0, 0, SSL_AES, 0, 0, 0, 0, 0, 0},
312 {0, SSL_TXT_AES_GCM, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM, 0, 0, 0, 0,
314 {0, SSL_TXT_CAMELLIA128, 0, 0, 0, SSL_CAMELLIA128, 0, 0, 0, 0, 0, 0},
315 {0, SSL_TXT_CAMELLIA256, 0, 0, 0, SSL_CAMELLIA256, 0, 0, 0, 0, 0, 0},
316 {0, SSL_TXT_CAMELLIA, 0, 0, 0, SSL_CAMELLIA128 | SSL_CAMELLIA256, 0, 0, 0,
320 {0, SSL_TXT_MD5, 0, 0, 0, 0, SSL_MD5, 0, 0, 0, 0, 0},
321 {0, SSL_TXT_SHA1, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
322 {0, SSL_TXT_SHA, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
323 {0, SSL_TXT_GOST94, 0, 0, 0, 0, SSL_GOST94, 0, 0, 0, 0, 0},
324 {0, SSL_TXT_GOST89MAC, 0, 0, 0, 0, SSL_GOST89MAC, 0, 0, 0, 0, 0},
325 {0, SSL_TXT_SHA256, 0, 0, 0, 0, SSL_SHA256, 0, 0, 0, 0, 0},
326 {0, SSL_TXT_SHA384, 0, 0, 0, 0, SSL_SHA384, 0, 0, 0, 0, 0},
328 /* protocol version aliases */
329 {0, SSL_TXT_SSLV2, 0, 0, 0, 0, 0, SSL_SSLV2, 0, 0, 0, 0},
330 {0, SSL_TXT_SSLV3, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0},
331 {0, SSL_TXT_TLSV1, 0, 0, 0, 0, 0, SSL_TLSV1, 0, 0, 0, 0},
332 {0, SSL_TXT_TLSV1_2, 0, 0, 0, 0, 0, SSL_TLSV1_2, 0, 0, 0, 0},
335 {0, SSL_TXT_EXP, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0},
336 {0, SSL_TXT_EXPORT, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0},
338 /* strength classes */
339 {0, SSL_TXT_EXP40, 0, 0, 0, 0, 0, 0, SSL_EXP40, 0, 0, 0},
340 {0, SSL_TXT_EXP56, 0, 0, 0, 0, 0, 0, SSL_EXP56, 0, 0, 0},
341 {0, SSL_TXT_LOW, 0, 0, 0, 0, 0, 0, SSL_LOW, 0, 0, 0},
342 {0, SSL_TXT_MEDIUM, 0, 0, 0, 0, 0, 0, SSL_MEDIUM, 0, 0, 0},
343 {0, SSL_TXT_HIGH, 0, 0, 0, 0, 0, 0, SSL_HIGH, 0, 0, 0},
344 /* FIPS 140-2 approved ciphersuite */
345 {0, SSL_TXT_FIPS, 0, 0, 0, ~SSL_eNULL, 0, 0, SSL_FIPS, 0, 0, 0},
349 * Search for public key algorithm with given name and return its pkey_id if
350 * it is available. Otherwise return 0
352 #ifdef OPENSSL_NO_ENGINE
354 static int get_optional_pkey_id(const char *pkey_name)
356 const EVP_PKEY_ASN1_METHOD *ameth;
358 ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1);
359 if (ameth && EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL,
368 static int get_optional_pkey_id(const char *pkey_name)
370 const EVP_PKEY_ASN1_METHOD *ameth;
371 ENGINE *tmpeng = NULL;
373 ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1);
375 if (EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL,
380 ENGINE_finish(tmpeng);
386 void ssl_load_ciphers(void)
388 ssl_cipher_methods[SSL_ENC_DES_IDX] = EVP_get_cipherbyname(SN_des_cbc);
389 ssl_cipher_methods[SSL_ENC_3DES_IDX] =
390 EVP_get_cipherbyname(SN_des_ede3_cbc);
391 ssl_cipher_methods[SSL_ENC_RC4_IDX] = EVP_get_cipherbyname(SN_rc4);
392 ssl_cipher_methods[SSL_ENC_RC2_IDX] = EVP_get_cipherbyname(SN_rc2_cbc);
393 #ifndef OPENSSL_NO_IDEA
394 ssl_cipher_methods[SSL_ENC_IDEA_IDX] = EVP_get_cipherbyname(SN_idea_cbc);
396 ssl_cipher_methods[SSL_ENC_IDEA_IDX] = NULL;
398 ssl_cipher_methods[SSL_ENC_AES128_IDX] =
399 EVP_get_cipherbyname(SN_aes_128_cbc);
400 ssl_cipher_methods[SSL_ENC_AES256_IDX] =
401 EVP_get_cipherbyname(SN_aes_256_cbc);
402 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] =
403 EVP_get_cipherbyname(SN_camellia_128_cbc);
404 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] =
405 EVP_get_cipherbyname(SN_camellia_256_cbc);
406 ssl_cipher_methods[SSL_ENC_GOST89_IDX] =
407 EVP_get_cipherbyname(SN_gost89_cnt);
408 ssl_cipher_methods[SSL_ENC_SEED_IDX] = EVP_get_cipherbyname(SN_seed_cbc);
410 ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] =
411 EVP_get_cipherbyname(SN_aes_128_gcm);
412 ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] =
413 EVP_get_cipherbyname(SN_aes_256_gcm);
415 ssl_digest_methods[SSL_MD_MD5_IDX] = EVP_get_digestbyname(SN_md5);
416 ssl_mac_secret_size[SSL_MD_MD5_IDX] =
417 EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]);
418 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0);
419 ssl_digest_methods[SSL_MD_SHA1_IDX] = EVP_get_digestbyname(SN_sha1);
420 ssl_mac_secret_size[SSL_MD_SHA1_IDX] =
421 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]);
422 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0);
423 ssl_digest_methods[SSL_MD_GOST94_IDX] =
424 EVP_get_digestbyname(SN_id_GostR3411_94);
425 if (ssl_digest_methods[SSL_MD_GOST94_IDX]) {
426 ssl_mac_secret_size[SSL_MD_GOST94_IDX] =
427 EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]);
428 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0);
430 ssl_digest_methods[SSL_MD_GOST89MAC_IDX] =
431 EVP_get_digestbyname(SN_id_Gost28147_89_MAC);
432 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac");
433 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) {
434 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32;
437 ssl_digest_methods[SSL_MD_SHA256_IDX] = EVP_get_digestbyname(SN_sha256);
438 ssl_mac_secret_size[SSL_MD_SHA256_IDX] =
439 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]);
440 ssl_digest_methods[SSL_MD_SHA384_IDX] = EVP_get_digestbyname(SN_sha384);
441 ssl_mac_secret_size[SSL_MD_SHA384_IDX] =
442 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]);
445 #ifndef OPENSSL_NO_COMP
447 static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b)
449 return ((*a)->id - (*b)->id);
452 static void load_builtin_compressions(void)
454 int got_write_lock = 0;
456 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
457 if (ssl_comp_methods == NULL) {
458 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
459 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
462 if (ssl_comp_methods == NULL) {
463 SSL_COMP *comp = NULL;
466 ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp);
467 if (ssl_comp_methods != NULL) {
468 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
470 comp->method = COMP_zlib();
471 if (comp->method && comp->method->type == NID_undef)
474 comp->id = SSL_COMP_ZLIB_IDX;
475 comp->name = comp->method->name;
476 sk_SSL_COMP_push(ssl_comp_methods, comp);
479 sk_SSL_COMP_sort(ssl_comp_methods);
486 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
488 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
492 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
493 const EVP_MD **md, int *mac_pkey_type,
494 int *mac_secret_size, SSL_COMP **comp)
504 #ifndef OPENSSL_NO_COMP
505 load_builtin_compressions();
509 ctmp.id = s->compress_meth;
510 if (ssl_comp_methods != NULL) {
511 i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp);
513 *comp = sk_SSL_COMP_value(ssl_comp_methods, i);
519 if ((enc == NULL) || (md == NULL))
522 switch (c->algorithm_enc) {
527 i = SSL_ENC_3DES_IDX;
536 i = SSL_ENC_IDEA_IDX;
539 i = SSL_ENC_NULL_IDX;
542 i = SSL_ENC_AES128_IDX;
545 i = SSL_ENC_AES256_IDX;
547 case SSL_CAMELLIA128:
548 i = SSL_ENC_CAMELLIA128_IDX;
550 case SSL_CAMELLIA256:
551 i = SSL_ENC_CAMELLIA256_IDX;
553 case SSL_eGOST2814789CNT:
554 i = SSL_ENC_GOST89_IDX;
557 i = SSL_ENC_SEED_IDX;
560 i = SSL_ENC_AES128GCM_IDX;
563 i = SSL_ENC_AES256GCM_IDX;
570 if ((i < 0) || (i >= SSL_ENC_NUM_IDX))
573 if (i == SSL_ENC_NULL_IDX)
574 *enc = EVP_enc_null();
576 *enc = ssl_cipher_methods[i];
579 switch (c->algorithm_mac) {
587 i = SSL_MD_SHA256_IDX;
590 i = SSL_MD_SHA384_IDX;
593 i = SSL_MD_GOST94_IDX;
596 i = SSL_MD_GOST89MAC_IDX;
602 if ((i < 0) || (i >= SSL_MD_NUM_IDX)) {
604 if (mac_pkey_type != NULL)
605 *mac_pkey_type = NID_undef;
606 if (mac_secret_size != NULL)
607 *mac_secret_size = 0;
608 if (c->algorithm_mac == SSL_AEAD)
609 mac_pkey_type = NULL;
611 *md = ssl_digest_methods[i];
612 if (mac_pkey_type != NULL)
613 *mac_pkey_type = ssl_mac_pkey_id[i];
614 if (mac_secret_size != NULL)
615 *mac_secret_size = ssl_mac_secret_size[i];
618 if ((*enc != NULL) &&
619 (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER))
620 && (!mac_pkey_type || *mac_pkey_type != NID_undef)) {
621 const EVP_CIPHER *evp;
623 if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR ||
624 s->ssl_version < TLS1_VERSION)
632 if (c->algorithm_enc == SSL_RC4 &&
633 c->algorithm_mac == SSL_MD5 &&
634 (evp = EVP_get_cipherbyname("RC4-HMAC-MD5")))
635 *enc = evp, *md = NULL;
636 else if (c->algorithm_enc == SSL_AES128 &&
637 c->algorithm_mac == SSL_SHA1 &&
638 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
639 *enc = evp, *md = NULL;
640 else if (c->algorithm_enc == SSL_AES256 &&
641 c->algorithm_mac == SSL_SHA1 &&
642 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
643 *enc = evp, *md = NULL;
649 int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md)
651 if (idx < 0 || idx >= SSL_MD_NUM_IDX) {
654 *mask = ssl_handshake_digest_flag[idx];
656 *md = ssl_digest_methods[idx];
662 #define ITEM_SEP(a) \
663 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
665 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
672 if (curr->prev != NULL)
673 curr->prev->next = curr->next;
674 if (curr->next != NULL)
675 curr->next->prev = curr->prev;
676 (*tail)->next = curr;
682 static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
689 if (curr->next != NULL)
690 curr->next->prev = curr->prev;
691 if (curr->prev != NULL)
692 curr->prev->next = curr->next;
693 (*head)->prev = curr;
699 static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth,
700 unsigned long *enc, unsigned long *mac,
709 #ifdef OPENSSL_NO_RSA
713 #ifdef OPENSSL_NO_DSA
716 *mkey |= SSL_kDHr | SSL_kDHd; /* no such ciphersuites supported! */
719 *mkey |= SSL_kDHr | SSL_kDHd | SSL_kEDH;
722 #ifdef OPENSSL_NO_KRB5
726 #ifdef OPENSSL_NO_ECDSA
729 #ifdef OPENSSL_NO_ECDH
730 *mkey |= SSL_kECDHe | SSL_kECDHr;
733 #ifdef OPENSSL_NO_PSK
737 #ifdef OPENSSL_NO_SRP
741 * Check for presence of GOST 34.10 algorithms, and if they do not
742 * present, disable appropriate auth and key exchange
744 if (!get_optional_pkey_id("gost94")) {
745 *auth |= SSL_aGOST94;
747 if (!get_optional_pkey_id("gost2001")) {
748 *auth |= SSL_aGOST01;
751 * Disable GOST key exchange if no GOST signature algs are available *
753 if ((*auth & (SSL_aGOST94 | SSL_aGOST01)) == (SSL_aGOST94 | SSL_aGOST01)) {
756 #ifdef SSL_FORBID_ENULL
760 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX] == NULL) ? SSL_DES : 0;
761 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES : 0;
762 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX] == NULL) ? SSL_RC4 : 0;
763 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX] == NULL) ? SSL_RC2 : 0;
764 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA : 0;
765 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128 : 0;
766 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256 : 0;
768 (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] ==
769 NULL) ? SSL_AES128GCM : 0;
771 (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] ==
772 NULL) ? SSL_AES256GCM : 0;
774 (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] ==
775 NULL) ? SSL_CAMELLIA128 : 0;
777 (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] ==
778 NULL) ? SSL_CAMELLIA256 : 0;
780 (ssl_cipher_methods[SSL_ENC_GOST89_IDX] ==
781 NULL) ? SSL_eGOST2814789CNT : 0;
782 *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED : 0;
784 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX] == NULL) ? SSL_MD5 : 0;
785 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1 : 0;
786 *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256 : 0;
787 *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384 : 0;
788 *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94 : 0;
789 *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL
790 || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] ==
791 NID_undef) ? SSL_GOST89MAC : 0;
795 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
797 unsigned long disabled_mkey,
798 unsigned long disabled_auth,
799 unsigned long disabled_enc,
800 unsigned long disabled_mac,
801 unsigned long disabled_ssl,
802 CIPHER_ORDER *co_list,
803 CIPHER_ORDER **head_p,
804 CIPHER_ORDER **tail_p)
810 * We have num_of_ciphers descriptions compiled in, depending on the
811 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
812 * These will later be sorted in a linked list with at most num
816 /* Get the initial list of ciphers */
817 co_list_num = 0; /* actual count of ciphers */
818 for (i = 0; i < num_of_ciphers; i++) {
819 c = ssl_method->get_cipher(i);
820 /* drop those that use any of that is not available */
821 if ((c != NULL) && c->valid &&
823 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) &&
825 !(c->algorithm_mkey & disabled_mkey) &&
826 !(c->algorithm_auth & disabled_auth) &&
827 !(c->algorithm_enc & disabled_enc) &&
828 !(c->algorithm_mac & disabled_mac) &&
829 !(c->algorithm_ssl & disabled_ssl)) {
830 co_list[co_list_num].cipher = c;
831 co_list[co_list_num].next = NULL;
832 co_list[co_list_num].prev = NULL;
833 co_list[co_list_num].active = 0;
836 fprintf(stderr, "\t%d: %s %lx %lx %lx\n", i, c->name, c->id,
837 c->algorithm_mkey, c->algorithm_auth);
838 #endif /* KSSL_DEBUG */
840 * if (!sk_push(ca_list,(char *)c)) goto err;
846 * Prepare linked list from list entries
848 if (co_list_num > 0) {
849 co_list[0].prev = NULL;
851 if (co_list_num > 1) {
852 co_list[0].next = &co_list[1];
854 for (i = 1; i < co_list_num - 1; i++) {
855 co_list[i].prev = &co_list[i - 1];
856 co_list[i].next = &co_list[i + 1];
859 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
862 co_list[co_list_num - 1].next = NULL;
864 *head_p = &co_list[0];
865 *tail_p = &co_list[co_list_num - 1];
869 static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list,
870 int num_of_group_aliases,
871 unsigned long disabled_mkey,
872 unsigned long disabled_auth,
873 unsigned long disabled_enc,
874 unsigned long disabled_mac,
875 unsigned long disabled_ssl,
878 CIPHER_ORDER *ciph_curr;
879 const SSL_CIPHER **ca_curr;
881 unsigned long mask_mkey = ~disabled_mkey;
882 unsigned long mask_auth = ~disabled_auth;
883 unsigned long mask_enc = ~disabled_enc;
884 unsigned long mask_mac = ~disabled_mac;
885 unsigned long mask_ssl = ~disabled_ssl;
888 * First, add the real ciphers as already collected
892 while (ciph_curr != NULL) {
893 *ca_curr = ciph_curr->cipher;
895 ciph_curr = ciph_curr->next;
899 * Now we add the available ones from the cipher_aliases[] table.
900 * They represent either one or more algorithms, some of which
901 * in any affected category must be supported (set in enabled_mask),
902 * or represent a cipher strength value (will be added in any case because algorithms=0).
904 for (i = 0; i < num_of_group_aliases; i++) {
905 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey;
906 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth;
907 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc;
908 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac;
909 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl;
912 if ((algorithm_mkey & mask_mkey) == 0)
916 if ((algorithm_auth & mask_auth) == 0)
920 if ((algorithm_enc & mask_enc) == 0)
924 if ((algorithm_mac & mask_mac) == 0)
928 if ((algorithm_ssl & mask_ssl) == 0)
931 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
935 *ca_curr = NULL; /* end of list */
938 static void ssl_cipher_apply_rule(unsigned long cipher_id,
939 unsigned long alg_mkey,
940 unsigned long alg_auth,
941 unsigned long alg_enc,
942 unsigned long alg_mac,
943 unsigned long alg_ssl,
944 unsigned long algo_strength, int rule,
945 int strength_bits, CIPHER_ORDER **head_p,
946 CIPHER_ORDER **tail_p)
948 CIPHER_ORDER *head, *tail, *curr, *next, *last;
949 const SSL_CIPHER *cp;
954 "Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
955 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl,
956 algo_strength, strength_bits);
959 if (rule == CIPHER_DEL)
960 reverse = 1; /* needed to maintain sorting between
961 * currently deleted ciphers */
984 next = reverse ? curr->prev : curr->next;
989 * Selection criteria is either the value of strength_bits
990 * or the algorithms used.
992 if (strength_bits >= 0) {
993 if (strength_bits != cp->strength_bits)
998 "\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n",
999 cp->name, cp->algorithm_mkey, cp->algorithm_auth,
1000 cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl,
1003 if (algo_strength == SSL_EXP_MASK && SSL_C_IS_EXPORT(cp))
1005 if (alg_ssl == ~SSL_SSLV2 && cp->algorithm_ssl == SSL_SSLV2)
1007 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
1009 if (alg_auth && !(alg_auth & cp->algorithm_auth))
1011 if (alg_enc && !(alg_enc & cp->algorithm_enc))
1013 if (alg_mac && !(alg_mac & cp->algorithm_mac))
1015 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
1017 if ((algo_strength & SSL_EXP_MASK)
1018 && !(algo_strength & SSL_EXP_MASK & cp->algo_strength))
1020 if ((algo_strength & SSL_STRONG_MASK)
1021 && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength))
1028 fprintf(stderr, "Action = %d\n", rule);
1031 /* add the cipher if it has not been added yet. */
1032 if (rule == CIPHER_ADD) {
1034 if (!curr->active) {
1035 ll_append_tail(&head, curr, &tail);
1039 /* Move the added cipher to this location */
1040 else if (rule == CIPHER_ORD) {
1043 ll_append_tail(&head, curr, &tail);
1045 } else if (rule == CIPHER_DEL) {
1049 * most recently deleted ciphersuites get best positions for
1050 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
1051 * in reverse to maintain the order)
1053 ll_append_head(&head, curr, &tail);
1056 } else if (rule == CIPHER_KILL) {
1061 curr->prev->next = curr->next;
1065 if (curr->next != NULL)
1066 curr->next->prev = curr->prev;
1067 if (curr->prev != NULL)
1068 curr->prev->next = curr->next;
1078 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
1079 CIPHER_ORDER **tail_p)
1081 int max_strength_bits, i, *number_uses;
1085 * This routine sorts the ciphers with descending strength. The sorting
1086 * must keep the pre-sorted sequence, so we apply the normal sorting
1087 * routine as '+' movement to the end of the list.
1089 max_strength_bits = 0;
1091 while (curr != NULL) {
1092 if (curr->active && (curr->cipher->strength_bits > max_strength_bits))
1093 max_strength_bits = curr->cipher->strength_bits;
1097 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
1099 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE);
1102 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
1105 * Now find the strength_bits values actually used
1108 while (curr != NULL) {
1110 number_uses[curr->cipher->strength_bits]++;
1114 * Go through the list of used strength_bits values in descending
1117 for (i = max_strength_bits; i >= 0; i--)
1118 if (number_uses[i] > 0)
1119 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p,
1122 OPENSSL_free(number_uses);
1126 static int ssl_cipher_process_rulestr(const char *rule_str,
1127 CIPHER_ORDER **head_p,
1128 CIPHER_ORDER **tail_p,
1129 const SSL_CIPHER **ca_list)
1131 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl,
1133 const char *l, *buf;
1134 int j, multi, found, rule, retval, ok, buflen;
1135 unsigned long cipher_id = 0;
1148 } else if (ch == '+') {
1151 } else if (ch == '!') {
1154 } else if (ch == '@') {
1155 rule = CIPHER_SPECIAL;
1177 #ifndef CHARSET_EBCDIC
1178 while (((ch >= 'A') && (ch <= 'Z')) ||
1179 ((ch >= '0') && (ch <= '9')) ||
1180 ((ch >= 'a') && (ch <= 'z')) || (ch == '-') || (ch == '.'))
1182 while (isalnum(ch) || (ch == '-') || (ch == '.'))
1191 * We hit something we cannot deal with,
1192 * it is no command or separator nor
1193 * alphanumeric, so we call this an error.
1195 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1196 SSL_R_INVALID_COMMAND);
1202 if (rule == CIPHER_SPECIAL) {
1203 found = 0; /* unused -- avoid compiler warning */
1204 break; /* special treatment */
1207 /* check for multi-part specification */
1215 * Now search for the cipher alias in the ca_list. Be careful
1216 * with the strncmp, because the "buflen" limitation
1217 * will make the rule "ADH:SOME" and the cipher
1218 * "ADH-MY-CIPHER" look like a match for buflen=3.
1219 * So additionally check whether the cipher name found
1220 * has the correct length. We can save a strlen() call:
1221 * just checking for the '\0' at the right place is
1222 * sufficient, we have to strncmp() anyway. (We cannot
1223 * use strcmp(), because buf is not '\0' terminated.)
1227 while (ca_list[j]) {
1228 if (!strncmp(buf, ca_list[j]->name, buflen) &&
1229 (ca_list[j]->name[buflen] == '\0')) {
1237 break; /* ignore this entry */
1239 if (ca_list[j]->algorithm_mkey) {
1241 alg_mkey &= ca_list[j]->algorithm_mkey;
1247 alg_mkey = ca_list[j]->algorithm_mkey;
1250 if (ca_list[j]->algorithm_auth) {
1252 alg_auth &= ca_list[j]->algorithm_auth;
1258 alg_auth = ca_list[j]->algorithm_auth;
1261 if (ca_list[j]->algorithm_enc) {
1263 alg_enc &= ca_list[j]->algorithm_enc;
1269 alg_enc = ca_list[j]->algorithm_enc;
1272 if (ca_list[j]->algorithm_mac) {
1274 alg_mac &= ca_list[j]->algorithm_mac;
1280 alg_mac = ca_list[j]->algorithm_mac;
1283 if (ca_list[j]->algo_strength & SSL_EXP_MASK) {
1284 if (algo_strength & SSL_EXP_MASK) {
1286 (ca_list[j]->algo_strength & SSL_EXP_MASK) |
1288 if (!(algo_strength & SSL_EXP_MASK)) {
1293 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK;
1296 if (ca_list[j]->algo_strength & SSL_STRONG_MASK) {
1297 if (algo_strength & SSL_STRONG_MASK) {
1299 (ca_list[j]->algo_strength & SSL_STRONG_MASK) |
1301 if (!(algo_strength & SSL_STRONG_MASK)) {
1307 ca_list[j]->algo_strength & SSL_STRONG_MASK;
1310 if (ca_list[j]->valid) {
1312 * explicit ciphersuite found; its protocol version does not
1313 * become part of the search pattern!
1316 cipher_id = ca_list[j]->id;
1319 * not an explicit ciphersuite; only in this case, the
1320 * protocol version is considered part of the search pattern
1323 if (ca_list[j]->algorithm_ssl) {
1325 alg_ssl &= ca_list[j]->algorithm_ssl;
1331 alg_ssl = ca_list[j]->algorithm_ssl;
1340 * Ok, we have the rule, now apply it
1342 if (rule == CIPHER_SPECIAL) { /* special command */
1344 if ((buflen == 8) && !strncmp(buf, "STRENGTH", 8))
1345 ok = ssl_cipher_strength_sort(head_p, tail_p);
1347 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1348 SSL_R_INVALID_COMMAND);
1352 * We do not support any "multi" options
1353 * together with "@", so throw away the
1354 * rest of the command, if any left, until
1355 * end or ':' is found.
1357 while ((*l != '\0') && !ITEM_SEP(*l))
1360 ssl_cipher_apply_rule(cipher_id,
1361 alg_mkey, alg_auth, alg_enc, alg_mac,
1362 alg_ssl, algo_strength, rule, -1, head_p,
1365 while ((*l != '\0') && !ITEM_SEP(*l))
1375 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER)
1376 **cipher_list, STACK_OF(SSL_CIPHER)
1377 **cipher_list_by_id,
1378 const char *rule_str)
1380 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1381 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac,
1383 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1385 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1386 const SSL_CIPHER **ca_list = NULL;
1389 * Return with error if nothing to do.
1391 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1395 * To reduce the work to do we only want to process the compiled
1396 * in algorithms, so we first get the mask of disabled ciphers.
1398 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc,
1399 &disabled_mac, &disabled_ssl);
1402 * Now we have to collect the available ciphers from the compiled
1403 * in ciphers. We cannot get more than the number compiled in, so
1404 * it is used for allocation.
1406 num_of_ciphers = ssl_method->num_ciphers();
1408 fprintf(stderr, "ssl_create_cipher_list() for %d ciphers\n",
1410 #endif /* KSSL_DEBUG */
1412 (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
1413 if (co_list == NULL) {
1414 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1415 return (NULL); /* Failure */
1418 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1419 disabled_mkey, disabled_auth, disabled_enc,
1420 disabled_mac, disabled_ssl, co_list, &head,
1423 /* Now arrange all ciphers by preference: */
1426 * Everything else being equal, prefer ephemeral ECDH over other key
1427 * exchange mechanisms
1429 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head,
1431 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head,
1434 /* AES is our preferred symmetric cipher */
1435 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head,
1438 /* Temporarily enable everything else for sorting */
1439 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1441 /* Low priority for MD5 */
1442 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head,
1446 * Move anonymous ciphers to the end. Usually, these will remain
1447 * disabled. (For applications that allow them, they aren't too bad, but
1448 * we prefer authenticated ciphers.)
1450 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1453 /* Move ciphers without forward secrecy to the end */
1454 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1457 * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1,
1460 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1462 ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1464 ssl_cipher_apply_rule(0, SSL_kKRB5, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1467 /* RC4 is sort-of broken -- move the the end */
1468 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head,
1472 * Now sort by symmetric encryption strength. The above ordering remains
1473 * in force within each class
1475 if (!ssl_cipher_strength_sort(&head, &tail)) {
1476 OPENSSL_free(co_list);
1480 /* Now disable everything (maintaining the ordering!) */
1481 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1484 * We also need cipher aliases for selecting based on the rule_str.
1485 * There might be two types of entries in the rule_str: 1) names
1486 * of ciphers themselves 2) aliases for groups of ciphers.
1487 * For 1) we need the available ciphers and for 2) the cipher
1488 * groups of cipher_aliases added together in one list (otherwise
1489 * we would be happy with just the cipher_aliases table).
1491 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
1492 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1493 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
1494 if (ca_list == NULL) {
1495 OPENSSL_free(co_list);
1496 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1497 return (NULL); /* Failure */
1499 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1500 disabled_mkey, disabled_auth, disabled_enc,
1501 disabled_mac, disabled_ssl, head);
1504 * If the rule_string begins with DEFAULT, apply the default rule
1505 * before using the (possibly available) additional rules.
1509 if (strncmp(rule_str, "DEFAULT", 7) == 0) {
1510 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1511 &head, &tail, ca_list);
1517 if (ok && (strlen(rule_p) > 0))
1518 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list);
1520 OPENSSL_free((void *)ca_list); /* Not needed anymore */
1522 if (!ok) { /* Rule processing failure */
1523 OPENSSL_free(co_list);
1528 * Allocate new "cipherstack" for the result, return with error
1529 * if we cannot get one.
1531 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) {
1532 OPENSSL_free(co_list);
1537 * The cipher selection for the list is done. The ciphers are added
1538 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1540 for (curr = head; curr != NULL; curr = curr->next) {
1543 && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS))
1548 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1550 fprintf(stderr, "<%s>\n", curr->cipher->name);
1554 OPENSSL_free(co_list); /* Not needed any longer */
1556 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1557 if (tmp_cipher_list == NULL) {
1558 sk_SSL_CIPHER_free(cipherstack);
1561 if (*cipher_list != NULL)
1562 sk_SSL_CIPHER_free(*cipher_list);
1563 *cipher_list = cipherstack;
1564 if (*cipher_list_by_id != NULL)
1565 sk_SSL_CIPHER_free(*cipher_list_by_id);
1566 *cipher_list_by_id = tmp_cipher_list;
1567 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,
1568 ssl_cipher_ptr_id_cmp);
1570 sk_SSL_CIPHER_sort(*cipher_list_by_id);
1571 return (cipherstack);
1574 char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
1576 int is_export, pkl, kl;
1577 const char *ver, *exp_str;
1578 const char *kx, *au, *enc, *mac;
1579 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, alg2;
1581 static const char *format =
1582 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n";
1584 static const char *format =
1585 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1586 #endif /* KSSL_DEBUG */
1588 alg_mkey = cipher->algorithm_mkey;
1589 alg_auth = cipher->algorithm_auth;
1590 alg_enc = cipher->algorithm_enc;
1591 alg_mac = cipher->algorithm_mac;
1592 alg_ssl = cipher->algorithm_ssl;
1594 alg2 = cipher->algorithm2;
1596 is_export = SSL_C_IS_EXPORT(cipher);
1597 pkl = SSL_C_EXPORT_PKEYLENGTH(cipher);
1598 kl = SSL_C_EXPORT_KEYLENGTH(cipher);
1599 exp_str = is_export ? " export" : "";
1601 if (alg_ssl & SSL_SSLV2)
1603 else if (alg_ssl & SSL_SSLV3)
1605 else if (alg_ssl & SSL_TLSV1_2)
1612 kx = is_export ? (pkl == 512 ? "RSA(512)" : "RSA(1024)") : "RSA";
1624 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)")
1696 : ((alg2 & SSL2_CF_8_BYTE_ENC) ? "RC4(64)" : "RC4(128)");
1699 enc = is_export ? (kl == 5 ? "RC2(40)" : "RC2(56)") : "RC2(128)";
1714 enc = "AESGCM(128)";
1717 enc = "AESGCM(256)";
1719 case SSL_CAMELLIA128:
1720 enc = "Camellia(128)";
1722 case SSL_CAMELLIA256:
1723 enc = "Camellia(256)";
1728 case SSL_eGOST2814789CNT:
1729 enc = "GOST89(256)";
1765 buf = OPENSSL_malloc(len);
1767 return ("OPENSSL_malloc Error");
1768 } else if (len < 128)
1769 return ("Buffer too small");
1772 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac,
1773 exp_str, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl);
1775 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac,
1777 #endif /* KSSL_DEBUG */
1781 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1787 i = (int)(c->id >> 24L);
1789 return ("TLSv1/SSLv3");
1796 /* return the actual cipher being used */
1797 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1804 /* number of bits for symmetric cipher */
1805 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1810 if (alg_bits != NULL)
1811 *alg_bits = c->alg_bits;
1812 ret = c->strength_bits;
1817 unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c)
1822 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1827 if ((n == 0) || (sk == NULL))
1829 nn = sk_SSL_COMP_num(sk);
1830 for (i = 0; i < nn; i++) {
1831 ctmp = sk_SSL_COMP_value(sk, i);
1838 #ifdef OPENSSL_NO_COMP
1839 void *SSL_COMP_get_compression_methods(void)
1844 int SSL_COMP_add_compression_method(int id, void *cm)
1849 const char *SSL_COMP_get_name(const void *comp)
1854 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1856 load_builtin_compressions();
1857 return (ssl_comp_methods);
1860 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1864 if (cm == NULL || cm->type == NID_undef)
1868 * According to draft-ietf-tls-compression-04.txt, the
1869 * compression number ranges should be the following:
1871 * 0 to 63: methods defined by the IETF
1872 * 64 to 192: external party methods assigned by IANA
1873 * 193 to 255: reserved for private use
1875 if (id < 193 || id > 255) {
1876 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1877 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1882 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1885 load_builtin_compressions();
1886 if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) {
1889 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1890 SSL_R_DUPLICATE_COMPRESSION_ID);
1892 } else if ((ssl_comp_methods == NULL)
1893 || !sk_SSL_COMP_push(ssl_comp_methods, comp)) {
1896 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE);
1904 const char *SSL_COMP_get_name(const COMP_METHOD *comp)