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, SSL_kEDH | SSL_kEECDH, SSL_aNULL, ~SSL_eNULL, 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 {0, SSL_TXT_kDHr, 0, SSL_kDHr, 0, 0, 0, 0, 0, 0, 0, 0},
249 {0, SSL_TXT_kDHd, 0, SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0},
250 {0, SSL_TXT_kDH, 0, SSL_kDHr | SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0},
251 {0, SSL_TXT_kEDH, 0, SSL_kEDH, 0, 0, 0, 0, 0, 0, 0, 0},
252 {0, SSL_TXT_kDHE, 0, SSL_kEDH, 0, 0, 0, 0, 0, 0, 0, 0},
253 {0, SSL_TXT_DH, 0, SSL_kDHr | SSL_kDHd | SSL_kEDH, 0, 0, 0, 0, 0, 0, 0,
256 {0, SSL_TXT_kKRB5, 0, SSL_kKRB5, 0, 0, 0, 0, 0, 0, 0, 0},
258 {0, SSL_TXT_kECDHr, 0, SSL_kECDHr, 0, 0, 0, 0, 0, 0, 0, 0},
259 {0, SSL_TXT_kECDHe, 0, SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0},
260 {0, SSL_TXT_kECDH, 0, SSL_kECDHr | SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0},
261 {0, SSL_TXT_kEECDH, 0, SSL_kEECDH, 0, 0, 0, 0, 0, 0, 0, 0},
262 {0, SSL_TXT_kECDHE, 0, SSL_kEECDH, 0, 0, 0, 0, 0, 0, 0, 0},
263 {0, SSL_TXT_ECDH, 0, SSL_kECDHr | SSL_kECDHe | SSL_kEECDH, 0, 0, 0, 0, 0,
266 {0, SSL_TXT_kPSK, 0, SSL_kPSK, 0, 0, 0, 0, 0, 0, 0, 0},
267 {0, SSL_TXT_kSRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
268 {0, SSL_TXT_kGOST, 0, SSL_kGOST, 0, 0, 0, 0, 0, 0, 0, 0},
270 /* server authentication aliases */
271 {0, SSL_TXT_aRSA, 0, 0, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
272 {0, SSL_TXT_aDSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
273 {0, SSL_TXT_DSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
274 {0, SSL_TXT_aKRB5, 0, 0, SSL_aKRB5, 0, 0, 0, 0, 0, 0, 0},
275 {0, SSL_TXT_aNULL, 0, 0, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
276 /* no such ciphersuites supported! */
277 {0, SSL_TXT_aDH, 0, 0, SSL_aDH, 0, 0, 0, 0, 0, 0, 0},
278 {0, SSL_TXT_aECDH, 0, 0, SSL_aECDH, 0, 0, 0, 0, 0, 0, 0},
279 {0, SSL_TXT_aECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
280 {0, SSL_TXT_ECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
281 {0, SSL_TXT_aPSK, 0, 0, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0},
282 {0, SSL_TXT_aGOST94, 0, 0, SSL_aGOST94, 0, 0, 0, 0, 0, 0, 0},
283 {0, SSL_TXT_aGOST01, 0, 0, SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0},
284 {0, SSL_TXT_aGOST, 0, 0, SSL_aGOST94 | SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0},
285 {0, SSL_TXT_aSRP, 0, 0, SSL_aSRP, 0, 0, 0, 0, 0, 0, 0},
287 /* aliases combining key exchange and server authentication */
288 {0, SSL_TXT_EDH, 0, SSL_kEDH, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
289 {0, SSL_TXT_DHE, 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_ECDHE, 0, SSL_kEECDH, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
292 {0, SSL_TXT_NULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
293 {0, SSL_TXT_KRB5, 0, SSL_kKRB5, SSL_aKRB5, 0, 0, 0, 0, 0, 0, 0},
294 {0, SSL_TXT_RSA, 0, SSL_kRSA, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
295 {0, SSL_TXT_ADH, 0, SSL_kEDH, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
296 {0, SSL_TXT_AECDH, 0, SSL_kEECDH, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
297 {0, SSL_TXT_PSK, 0, SSL_kPSK, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0},
298 {0, SSL_TXT_SRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
300 /* symmetric encryption aliases */
301 {0, SSL_TXT_DES, 0, 0, 0, SSL_DES, 0, 0, 0, 0, 0, 0},
302 {0, SSL_TXT_3DES, 0, 0, 0, SSL_3DES, 0, 0, 0, 0, 0, 0},
303 {0, SSL_TXT_RC4, 0, 0, 0, SSL_RC4, 0, 0, 0, 0, 0, 0},
304 {0, SSL_TXT_RC2, 0, 0, 0, SSL_RC2, 0, 0, 0, 0, 0, 0},
305 {0, SSL_TXT_IDEA, 0, 0, 0, SSL_IDEA, 0, 0, 0, 0, 0, 0},
306 {0, SSL_TXT_SEED, 0, 0, 0, SSL_SEED, 0, 0, 0, 0, 0, 0},
307 {0, SSL_TXT_eNULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
308 {0, SSL_TXT_AES128, 0, 0, 0, SSL_AES128 | SSL_AES128GCM, 0, 0, 0, 0, 0,
310 {0, SSL_TXT_AES256, 0, 0, 0, SSL_AES256 | SSL_AES256GCM, 0, 0, 0, 0, 0,
312 {0, SSL_TXT_AES, 0, 0, 0, SSL_AES, 0, 0, 0, 0, 0, 0},
313 {0, SSL_TXT_AES_GCM, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM, 0, 0, 0, 0,
315 {0, SSL_TXT_CAMELLIA128, 0, 0, 0, SSL_CAMELLIA128, 0, 0, 0, 0, 0, 0},
316 {0, SSL_TXT_CAMELLIA256, 0, 0, 0, SSL_CAMELLIA256, 0, 0, 0, 0, 0, 0},
317 {0, SSL_TXT_CAMELLIA, 0, 0, 0, SSL_CAMELLIA128 | SSL_CAMELLIA256, 0, 0, 0,
321 {0, SSL_TXT_MD5, 0, 0, 0, 0, SSL_MD5, 0, 0, 0, 0, 0},
322 {0, SSL_TXT_SHA1, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
323 {0, SSL_TXT_SHA, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
324 {0, SSL_TXT_GOST94, 0, 0, 0, 0, SSL_GOST94, 0, 0, 0, 0, 0},
325 {0, SSL_TXT_GOST89MAC, 0, 0, 0, 0, SSL_GOST89MAC, 0, 0, 0, 0, 0},
326 {0, SSL_TXT_SHA256, 0, 0, 0, 0, SSL_SHA256, 0, 0, 0, 0, 0},
327 {0, SSL_TXT_SHA384, 0, 0, 0, 0, SSL_SHA384, 0, 0, 0, 0, 0},
329 /* protocol version aliases */
330 {0, SSL_TXT_SSLV2, 0, 0, 0, 0, 0, SSL_SSLV2, 0, 0, 0, 0},
331 {0, SSL_TXT_SSLV3, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0},
332 {0, SSL_TXT_TLSV1, 0, 0, 0, 0, 0, SSL_TLSV1, 0, 0, 0, 0},
333 {0, SSL_TXT_TLSV1_2, 0, 0, 0, 0, 0, SSL_TLSV1_2, 0, 0, 0, 0},
336 {0, SSL_TXT_EXP, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0},
337 {0, SSL_TXT_EXPORT, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0},
339 /* strength classes */
340 {0, SSL_TXT_EXP40, 0, 0, 0, 0, 0, 0, SSL_EXP40, 0, 0, 0},
341 {0, SSL_TXT_EXP56, 0, 0, 0, 0, 0, 0, SSL_EXP56, 0, 0, 0},
342 {0, SSL_TXT_LOW, 0, 0, 0, 0, 0, 0, SSL_LOW, 0, 0, 0},
343 {0, SSL_TXT_MEDIUM, 0, 0, 0, 0, 0, 0, SSL_MEDIUM, 0, 0, 0},
344 {0, SSL_TXT_HIGH, 0, 0, 0, 0, 0, 0, SSL_HIGH, 0, 0, 0},
345 /* FIPS 140-2 approved ciphersuite */
346 {0, SSL_TXT_FIPS, 0, 0, 0, ~SSL_eNULL, 0, 0, SSL_FIPS, 0, 0, 0},
347 /* "DHE-" aliases to "EDH-" labels (for forward compatibility) */
348 {0, SSL3_TXT_DHE_DSS_DES_40_CBC_SHA, 0,
349 SSL_kDHE, SSL_aDSS, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_EXPORT | SSL_EXP40,
351 {0, SSL3_TXT_DHE_DSS_DES_64_CBC_SHA, 0,
352 SSL_kDHE, SSL_aDSS, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_NOT_EXP | SSL_LOW,
354 {0, SSL3_TXT_DHE_DSS_DES_192_CBC3_SHA, 0,
355 SSL_kDHE, SSL_aDSS, SSL_3DES, SSL_SHA1, SSL_SSLV3,
356 SSL_NOT_EXP | SSL_HIGH | SSL_FIPS, 0, 0, 0,},
357 {0, SSL3_TXT_DHE_RSA_DES_40_CBC_SHA, 0,
358 SSL_kDHE, SSL_aRSA, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_EXPORT | SSL_EXP40,
360 {0, SSL3_TXT_DHE_RSA_DES_64_CBC_SHA, 0,
361 SSL_kDHE, SSL_aRSA, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_NOT_EXP | SSL_LOW,
363 {0, SSL3_TXT_DHE_RSA_DES_192_CBC3_SHA, 0,
364 SSL_kDHE, SSL_aRSA, SSL_3DES, SSL_SHA1, SSL_SSLV3,
365 SSL_NOT_EXP | SSL_HIGH | SSL_FIPS, 0, 0, 0,},
369 * Search for public key algorithm with given name and return its pkey_id if
370 * it is available. Otherwise return 0
372 #ifdef OPENSSL_NO_ENGINE
374 static int get_optional_pkey_id(const char *pkey_name)
376 const EVP_PKEY_ASN1_METHOD *ameth;
378 ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1);
380 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
387 static int get_optional_pkey_id(const char *pkey_name)
389 const EVP_PKEY_ASN1_METHOD *ameth;
390 ENGINE *tmpeng = NULL;
392 ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1);
394 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
397 ENGINE_finish(tmpeng);
403 void ssl_load_ciphers(void)
405 ssl_cipher_methods[SSL_ENC_DES_IDX] = EVP_get_cipherbyname(SN_des_cbc);
406 ssl_cipher_methods[SSL_ENC_3DES_IDX] =
407 EVP_get_cipherbyname(SN_des_ede3_cbc);
408 ssl_cipher_methods[SSL_ENC_RC4_IDX] = EVP_get_cipherbyname(SN_rc4);
409 ssl_cipher_methods[SSL_ENC_RC2_IDX] = EVP_get_cipherbyname(SN_rc2_cbc);
410 #ifndef OPENSSL_NO_IDEA
411 ssl_cipher_methods[SSL_ENC_IDEA_IDX] = EVP_get_cipherbyname(SN_idea_cbc);
413 ssl_cipher_methods[SSL_ENC_IDEA_IDX] = NULL;
415 ssl_cipher_methods[SSL_ENC_AES128_IDX] =
416 EVP_get_cipherbyname(SN_aes_128_cbc);
417 ssl_cipher_methods[SSL_ENC_AES256_IDX] =
418 EVP_get_cipherbyname(SN_aes_256_cbc);
419 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] =
420 EVP_get_cipherbyname(SN_camellia_128_cbc);
421 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] =
422 EVP_get_cipherbyname(SN_camellia_256_cbc);
423 ssl_cipher_methods[SSL_ENC_GOST89_IDX] =
424 EVP_get_cipherbyname(SN_gost89_cnt);
425 ssl_cipher_methods[SSL_ENC_SEED_IDX] = EVP_get_cipherbyname(SN_seed_cbc);
427 ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] =
428 EVP_get_cipherbyname(SN_aes_128_gcm);
429 ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] =
430 EVP_get_cipherbyname(SN_aes_256_gcm);
432 ssl_digest_methods[SSL_MD_MD5_IDX] = EVP_get_digestbyname(SN_md5);
433 ssl_mac_secret_size[SSL_MD_MD5_IDX] =
434 EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]);
435 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0);
436 ssl_digest_methods[SSL_MD_SHA1_IDX] = EVP_get_digestbyname(SN_sha1);
437 ssl_mac_secret_size[SSL_MD_SHA1_IDX] =
438 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]);
439 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0);
440 ssl_digest_methods[SSL_MD_GOST94_IDX] =
441 EVP_get_digestbyname(SN_id_GostR3411_94);
442 if (ssl_digest_methods[SSL_MD_GOST94_IDX]) {
443 ssl_mac_secret_size[SSL_MD_GOST94_IDX] =
444 EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]);
445 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0);
447 ssl_digest_methods[SSL_MD_GOST89MAC_IDX] =
448 EVP_get_digestbyname(SN_id_Gost28147_89_MAC);
449 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac");
450 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) {
451 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32;
454 ssl_digest_methods[SSL_MD_SHA256_IDX] = EVP_get_digestbyname(SN_sha256);
455 ssl_mac_secret_size[SSL_MD_SHA256_IDX] =
456 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]);
457 ssl_digest_methods[SSL_MD_SHA384_IDX] = EVP_get_digestbyname(SN_sha384);
458 ssl_mac_secret_size[SSL_MD_SHA384_IDX] =
459 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]);
462 #ifndef OPENSSL_NO_COMP
464 static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b)
466 return ((*a)->id - (*b)->id);
469 static void load_builtin_compressions(void)
471 int got_write_lock = 0;
473 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
474 if (ssl_comp_methods == NULL) {
475 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
476 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
479 if (ssl_comp_methods == NULL) {
480 SSL_COMP *comp = NULL;
483 ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp);
484 if (ssl_comp_methods != NULL) {
485 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
487 comp->method = COMP_zlib();
488 if (comp->method && comp->method->type == NID_undef)
491 comp->id = SSL_COMP_ZLIB_IDX;
492 comp->name = comp->method->name;
493 sk_SSL_COMP_push(ssl_comp_methods, comp);
496 sk_SSL_COMP_sort(ssl_comp_methods);
503 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
505 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
509 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
510 const EVP_MD **md, int *mac_pkey_type,
511 int *mac_secret_size, SSL_COMP **comp)
521 #ifndef OPENSSL_NO_COMP
522 load_builtin_compressions();
526 ctmp.id = s->compress_meth;
527 if (ssl_comp_methods != NULL) {
528 i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp);
530 *comp = sk_SSL_COMP_value(ssl_comp_methods, i);
536 if ((enc == NULL) || (md == NULL))
539 switch (c->algorithm_enc) {
544 i = SSL_ENC_3DES_IDX;
553 i = SSL_ENC_IDEA_IDX;
556 i = SSL_ENC_NULL_IDX;
559 i = SSL_ENC_AES128_IDX;
562 i = SSL_ENC_AES256_IDX;
564 case SSL_CAMELLIA128:
565 i = SSL_ENC_CAMELLIA128_IDX;
567 case SSL_CAMELLIA256:
568 i = SSL_ENC_CAMELLIA256_IDX;
570 case SSL_eGOST2814789CNT:
571 i = SSL_ENC_GOST89_IDX;
574 i = SSL_ENC_SEED_IDX;
577 i = SSL_ENC_AES128GCM_IDX;
580 i = SSL_ENC_AES256GCM_IDX;
587 if ((i < 0) || (i >= SSL_ENC_NUM_IDX))
590 if (i == SSL_ENC_NULL_IDX)
591 *enc = EVP_enc_null();
593 *enc = ssl_cipher_methods[i];
596 switch (c->algorithm_mac) {
604 i = SSL_MD_SHA256_IDX;
607 i = SSL_MD_SHA384_IDX;
610 i = SSL_MD_GOST94_IDX;
613 i = SSL_MD_GOST89MAC_IDX;
619 if ((i < 0) || (i >= SSL_MD_NUM_IDX)) {
621 if (mac_pkey_type != NULL)
622 *mac_pkey_type = NID_undef;
623 if (mac_secret_size != NULL)
624 *mac_secret_size = 0;
625 if (c->algorithm_mac == SSL_AEAD)
626 mac_pkey_type = NULL;
628 *md = ssl_digest_methods[i];
629 if (mac_pkey_type != NULL)
630 *mac_pkey_type = ssl_mac_pkey_id[i];
631 if (mac_secret_size != NULL)
632 *mac_secret_size = ssl_mac_secret_size[i];
635 if ((*enc != NULL) &&
636 (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER))
637 && (!mac_pkey_type || *mac_pkey_type != NID_undef)) {
638 const EVP_CIPHER *evp;
640 if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR ||
641 s->ssl_version < TLS1_VERSION)
649 if (c->algorithm_enc == SSL_RC4 &&
650 c->algorithm_mac == SSL_MD5 &&
651 (evp = EVP_get_cipherbyname("RC4-HMAC-MD5")))
652 *enc = evp, *md = NULL;
653 else if (c->algorithm_enc == SSL_AES128 &&
654 c->algorithm_mac == SSL_SHA1 &&
655 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
656 *enc = evp, *md = NULL;
657 else if (c->algorithm_enc == SSL_AES256 &&
658 c->algorithm_mac == SSL_SHA1 &&
659 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
660 *enc = evp, *md = NULL;
661 else if (c->algorithm_enc == SSL_AES128 &&
662 c->algorithm_mac == SSL_SHA256 &&
663 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA256")))
664 *enc = evp, *md = NULL;
665 else if (c->algorithm_enc == SSL_AES256 &&
666 c->algorithm_mac == SSL_SHA256 &&
667 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA256")))
668 *enc = evp, *md = NULL;
674 int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md)
676 if (idx < 0 || idx >= SSL_MD_NUM_IDX) {
679 *mask = ssl_handshake_digest_flag[idx];
681 *md = ssl_digest_methods[idx];
687 #define ITEM_SEP(a) \
688 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
690 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
697 if (curr->prev != NULL)
698 curr->prev->next = curr->next;
699 if (curr->next != NULL)
700 curr->next->prev = curr->prev;
701 (*tail)->next = curr;
707 static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
714 if (curr->next != NULL)
715 curr->next->prev = curr->prev;
716 if (curr->prev != NULL)
717 curr->prev->next = curr->next;
718 (*head)->prev = curr;
724 static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth,
725 unsigned long *enc, unsigned long *mac,
734 #ifdef OPENSSL_NO_RSA
738 #ifdef OPENSSL_NO_DSA
742 *mkey |= SSL_kDHr | SSL_kDHd | SSL_kEDH;
745 #ifdef OPENSSL_NO_KRB5
749 #ifdef OPENSSL_NO_ECDSA
752 #ifdef OPENSSL_NO_ECDH
753 *mkey |= SSL_kECDHe | SSL_kECDHr;
756 #ifdef OPENSSL_NO_PSK
760 #ifdef OPENSSL_NO_SRP
764 * Check for presence of GOST 34.10 algorithms, and if they do not
765 * present, disable appropriate auth and key exchange
767 if (!get_optional_pkey_id("gost94")) {
768 *auth |= SSL_aGOST94;
770 if (!get_optional_pkey_id("gost2001")) {
771 *auth |= SSL_aGOST01;
774 * Disable GOST key exchange if no GOST signature algs are available *
776 if ((*auth & (SSL_aGOST94 | SSL_aGOST01)) == (SSL_aGOST94 | SSL_aGOST01)) {
779 #ifdef SSL_FORBID_ENULL
783 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX] == NULL) ? SSL_DES : 0;
784 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES : 0;
785 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX] == NULL) ? SSL_RC4 : 0;
786 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX] == NULL) ? SSL_RC2 : 0;
787 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA : 0;
788 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128 : 0;
789 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256 : 0;
791 (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] ==
792 NULL) ? SSL_AES128GCM : 0;
794 (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] ==
795 NULL) ? SSL_AES256GCM : 0;
797 (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] ==
798 NULL) ? SSL_CAMELLIA128 : 0;
800 (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] ==
801 NULL) ? SSL_CAMELLIA256 : 0;
803 (ssl_cipher_methods[SSL_ENC_GOST89_IDX] ==
804 NULL) ? SSL_eGOST2814789CNT : 0;
805 *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED : 0;
807 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX] == NULL) ? SSL_MD5 : 0;
808 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1 : 0;
809 *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256 : 0;
810 *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384 : 0;
811 *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94 : 0;
812 *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL
813 || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] ==
814 NID_undef) ? SSL_GOST89MAC : 0;
818 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
820 unsigned long disabled_mkey,
821 unsigned long disabled_auth,
822 unsigned long disabled_enc,
823 unsigned long disabled_mac,
824 unsigned long disabled_ssl,
825 CIPHER_ORDER *co_list,
826 CIPHER_ORDER **head_p,
827 CIPHER_ORDER **tail_p)
833 * We have num_of_ciphers descriptions compiled in, depending on the
834 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
835 * These will later be sorted in a linked list with at most num
839 /* Get the initial list of ciphers */
840 co_list_num = 0; /* actual count of ciphers */
841 for (i = 0; i < num_of_ciphers; i++) {
842 c = ssl_method->get_cipher(i);
843 /* drop those that use any of that is not available */
844 if ((c != NULL) && c->valid &&
846 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) &&
848 !(c->algorithm_mkey & disabled_mkey) &&
849 !(c->algorithm_auth & disabled_auth) &&
850 !(c->algorithm_enc & disabled_enc) &&
851 !(c->algorithm_mac & disabled_mac) &&
852 !(c->algorithm_ssl & disabled_ssl)) {
853 co_list[co_list_num].cipher = c;
854 co_list[co_list_num].next = NULL;
855 co_list[co_list_num].prev = NULL;
856 co_list[co_list_num].active = 0;
859 fprintf(stderr, "\t%d: %s %lx %lx %lx\n", i, c->name, c->id,
860 c->algorithm_mkey, c->algorithm_auth);
861 #endif /* KSSL_DEBUG */
863 * if (!sk_push(ca_list,(char *)c)) goto err;
869 * Prepare linked list from list entries
871 if (co_list_num > 0) {
872 co_list[0].prev = NULL;
874 if (co_list_num > 1) {
875 co_list[0].next = &co_list[1];
877 for (i = 1; i < co_list_num - 1; i++) {
878 co_list[i].prev = &co_list[i - 1];
879 co_list[i].next = &co_list[i + 1];
882 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
885 co_list[co_list_num - 1].next = NULL;
887 *head_p = &co_list[0];
888 *tail_p = &co_list[co_list_num - 1];
892 static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list,
893 int num_of_group_aliases,
894 unsigned long disabled_mkey,
895 unsigned long disabled_auth,
896 unsigned long disabled_enc,
897 unsigned long disabled_mac,
898 unsigned long disabled_ssl,
901 CIPHER_ORDER *ciph_curr;
902 const SSL_CIPHER **ca_curr;
904 unsigned long mask_mkey = ~disabled_mkey;
905 unsigned long mask_auth = ~disabled_auth;
906 unsigned long mask_enc = ~disabled_enc;
907 unsigned long mask_mac = ~disabled_mac;
908 unsigned long mask_ssl = ~disabled_ssl;
911 * First, add the real ciphers as already collected
915 while (ciph_curr != NULL) {
916 *ca_curr = ciph_curr->cipher;
918 ciph_curr = ciph_curr->next;
922 * Now we add the available ones from the cipher_aliases[] table.
923 * They represent either one or more algorithms, some of which
924 * in any affected category must be supported (set in enabled_mask),
925 * or represent a cipher strength value (will be added in any case because algorithms=0).
927 for (i = 0; i < num_of_group_aliases; i++) {
928 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey;
929 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth;
930 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc;
931 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac;
932 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl;
935 if ((algorithm_mkey & mask_mkey) == 0)
939 if ((algorithm_auth & mask_auth) == 0)
943 if ((algorithm_enc & mask_enc) == 0)
947 if ((algorithm_mac & mask_mac) == 0)
951 if ((algorithm_ssl & mask_ssl) == 0)
954 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
958 *ca_curr = NULL; /* end of list */
961 static void ssl_cipher_apply_rule(unsigned long cipher_id,
962 unsigned long alg_mkey,
963 unsigned long alg_auth,
964 unsigned long alg_enc,
965 unsigned long alg_mac,
966 unsigned long alg_ssl,
967 unsigned long algo_strength, int rule,
968 int strength_bits, CIPHER_ORDER **head_p,
969 CIPHER_ORDER **tail_p)
971 CIPHER_ORDER *head, *tail, *curr, *next, *last;
972 const SSL_CIPHER *cp;
977 "Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
978 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl,
979 algo_strength, strength_bits);
982 if (rule == CIPHER_DEL)
983 reverse = 1; /* needed to maintain sorting between
984 * currently deleted ciphers */
1007 next = reverse ? curr->prev : curr->next;
1012 * Selection criteria is either the value of strength_bits
1013 * or the algorithms used.
1015 if (strength_bits >= 0) {
1016 if (strength_bits != cp->strength_bits)
1021 "\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n",
1022 cp->name, cp->algorithm_mkey, cp->algorithm_auth,
1023 cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl,
1026 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1027 if (cipher_id && cipher_id != cp->id)
1030 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
1032 if (alg_auth && !(alg_auth & cp->algorithm_auth))
1034 if (alg_enc && !(alg_enc & cp->algorithm_enc))
1036 if (alg_mac && !(alg_mac & cp->algorithm_mac))
1038 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
1040 if ((algo_strength & SSL_EXP_MASK)
1041 && !(algo_strength & SSL_EXP_MASK & cp->algo_strength))
1043 if ((algo_strength & SSL_STRONG_MASK)
1044 && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength))
1049 fprintf(stderr, "Action = %d\n", rule);
1052 /* add the cipher if it has not been added yet. */
1053 if (rule == CIPHER_ADD) {
1055 if (!curr->active) {
1056 ll_append_tail(&head, curr, &tail);
1060 /* Move the added cipher to this location */
1061 else if (rule == CIPHER_ORD) {
1064 ll_append_tail(&head, curr, &tail);
1066 } else if (rule == CIPHER_DEL) {
1070 * most recently deleted ciphersuites get best positions for
1071 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
1072 * in reverse to maintain the order)
1074 ll_append_head(&head, curr, &tail);
1077 } else if (rule == CIPHER_KILL) {
1082 curr->prev->next = curr->next;
1086 if (curr->next != NULL)
1087 curr->next->prev = curr->prev;
1088 if (curr->prev != NULL)
1089 curr->prev->next = curr->next;
1099 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
1100 CIPHER_ORDER **tail_p)
1102 int max_strength_bits, i, *number_uses;
1106 * This routine sorts the ciphers with descending strength. The sorting
1107 * must keep the pre-sorted sequence, so we apply the normal sorting
1108 * routine as '+' movement to the end of the list.
1110 max_strength_bits = 0;
1112 while (curr != NULL) {
1113 if (curr->active && (curr->cipher->strength_bits > max_strength_bits))
1114 max_strength_bits = curr->cipher->strength_bits;
1118 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
1120 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE);
1123 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
1126 * Now find the strength_bits values actually used
1129 while (curr != NULL) {
1131 number_uses[curr->cipher->strength_bits]++;
1135 * Go through the list of used strength_bits values in descending
1138 for (i = max_strength_bits; i >= 0; i--)
1139 if (number_uses[i] > 0)
1140 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p,
1143 OPENSSL_free(number_uses);
1147 static int ssl_cipher_process_rulestr(const char *rule_str,
1148 CIPHER_ORDER **head_p,
1149 CIPHER_ORDER **tail_p,
1150 const SSL_CIPHER **ca_list)
1152 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl,
1154 const char *l, *buf;
1155 int j, multi, found, rule, retval, ok, buflen;
1156 unsigned long cipher_id = 0;
1169 } else if (ch == '+') {
1172 } else if (ch == '!') {
1175 } else if (ch == '@') {
1176 rule = CIPHER_SPECIAL;
1198 #ifndef CHARSET_EBCDIC
1199 while (((ch >= 'A') && (ch <= 'Z')) ||
1200 ((ch >= '0') && (ch <= '9')) ||
1201 ((ch >= 'a') && (ch <= 'z')) || (ch == '-') || (ch == '.'))
1203 while (isalnum(ch) || (ch == '-') || (ch == '.'))
1212 * We hit something we cannot deal with,
1213 * it is no command or separator nor
1214 * alphanumeric, so we call this an error.
1216 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1217 SSL_R_INVALID_COMMAND);
1223 if (rule == CIPHER_SPECIAL) {
1224 found = 0; /* unused -- avoid compiler warning */
1225 break; /* special treatment */
1228 /* check for multi-part specification */
1236 * Now search for the cipher alias in the ca_list. Be careful
1237 * with the strncmp, because the "buflen" limitation
1238 * will make the rule "ADH:SOME" and the cipher
1239 * "ADH-MY-CIPHER" look like a match for buflen=3.
1240 * So additionally check whether the cipher name found
1241 * has the correct length. We can save a strlen() call:
1242 * just checking for the '\0' at the right place is
1243 * sufficient, we have to strncmp() anyway. (We cannot
1244 * use strcmp(), because buf is not '\0' terminated.)
1248 while (ca_list[j]) {
1249 if (!strncmp(buf, ca_list[j]->name, buflen) &&
1250 (ca_list[j]->name[buflen] == '\0')) {
1258 break; /* ignore this entry */
1260 if (ca_list[j]->algorithm_mkey) {
1262 alg_mkey &= ca_list[j]->algorithm_mkey;
1268 alg_mkey = ca_list[j]->algorithm_mkey;
1271 if (ca_list[j]->algorithm_auth) {
1273 alg_auth &= ca_list[j]->algorithm_auth;
1279 alg_auth = ca_list[j]->algorithm_auth;
1282 if (ca_list[j]->algorithm_enc) {
1284 alg_enc &= ca_list[j]->algorithm_enc;
1290 alg_enc = ca_list[j]->algorithm_enc;
1293 if (ca_list[j]->algorithm_mac) {
1295 alg_mac &= ca_list[j]->algorithm_mac;
1301 alg_mac = ca_list[j]->algorithm_mac;
1304 if (ca_list[j]->algo_strength & SSL_EXP_MASK) {
1305 if (algo_strength & SSL_EXP_MASK) {
1307 (ca_list[j]->algo_strength & SSL_EXP_MASK) |
1309 if (!(algo_strength & SSL_EXP_MASK)) {
1314 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK;
1317 if (ca_list[j]->algo_strength & SSL_STRONG_MASK) {
1318 if (algo_strength & SSL_STRONG_MASK) {
1320 (ca_list[j]->algo_strength & SSL_STRONG_MASK) |
1322 if (!(algo_strength & SSL_STRONG_MASK)) {
1328 ca_list[j]->algo_strength & SSL_STRONG_MASK;
1331 if (ca_list[j]->valid) {
1333 * explicit ciphersuite found; its protocol version does not
1334 * become part of the search pattern!
1337 cipher_id = ca_list[j]->id;
1340 * not an explicit ciphersuite; only in this case, the
1341 * protocol version is considered part of the search pattern
1344 if (ca_list[j]->algorithm_ssl) {
1346 alg_ssl &= ca_list[j]->algorithm_ssl;
1352 alg_ssl = ca_list[j]->algorithm_ssl;
1361 * Ok, we have the rule, now apply it
1363 if (rule == CIPHER_SPECIAL) { /* special command */
1365 if ((buflen == 8) && !strncmp(buf, "STRENGTH", 8))
1366 ok = ssl_cipher_strength_sort(head_p, tail_p);
1368 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1369 SSL_R_INVALID_COMMAND);
1373 * We do not support any "multi" options
1374 * together with "@", so throw away the
1375 * rest of the command, if any left, until
1376 * end or ':' is found.
1378 while ((*l != '\0') && !ITEM_SEP(*l))
1381 ssl_cipher_apply_rule(cipher_id,
1382 alg_mkey, alg_auth, alg_enc, alg_mac,
1383 alg_ssl, algo_strength, rule, -1, head_p,
1386 while ((*l != '\0') && !ITEM_SEP(*l))
1396 #ifndef OPENSSL_NO_EC
1397 static int check_suiteb_cipher_list(const SSL_METHOD *meth, CERT *c,
1398 const char **prule_str)
1400 unsigned int suiteb_flags = 0, suiteb_comb2 = 0;
1401 if (!strcmp(*prule_str, "SUITEB128"))
1402 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS;
1403 else if (!strcmp(*prule_str, "SUITEB128ONLY"))
1404 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS_ONLY;
1405 else if (!strcmp(*prule_str, "SUITEB128C2")) {
1407 suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS;
1408 } else if (!strcmp(*prule_str, "SUITEB192"))
1409 suiteb_flags = SSL_CERT_FLAG_SUITEB_192_LOS;
1412 c->cert_flags &= ~SSL_CERT_FLAG_SUITEB_128_LOS;
1413 c->cert_flags |= suiteb_flags;
1415 suiteb_flags = c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS;
1419 /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */
1421 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)) {
1422 if (meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
1423 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1424 SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE);
1426 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1427 SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE);
1430 # ifndef OPENSSL_NO_ECDH
1431 switch (suiteb_flags) {
1432 case SSL_CERT_FLAG_SUITEB_128_LOS:
1434 *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384";
1437 "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384";
1439 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY:
1440 *prule_str = "ECDHE-ECDSA-AES128-GCM-SHA256";
1442 case SSL_CERT_FLAG_SUITEB_192_LOS:
1443 *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384";
1446 /* Set auto ECDH parameter determination */
1447 c->ecdh_tmp_auto = 1;
1450 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST,
1451 SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE);
1457 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER)
1458 **cipher_list, STACK_OF(SSL_CIPHER)
1459 **cipher_list_by_id,
1460 const char *rule_str, CERT *c)
1462 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1463 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac,
1465 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1467 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1468 const SSL_CIPHER **ca_list = NULL;
1471 * Return with error if nothing to do.
1473 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1475 #ifndef OPENSSL_NO_EC
1476 if (!check_suiteb_cipher_list(ssl_method, c, &rule_str))
1481 * To reduce the work to do we only want to process the compiled
1482 * in algorithms, so we first get the mask of disabled ciphers.
1484 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc,
1485 &disabled_mac, &disabled_ssl);
1488 * Now we have to collect the available ciphers from the compiled
1489 * in ciphers. We cannot get more than the number compiled in, so
1490 * it is used for allocation.
1492 num_of_ciphers = ssl_method->num_ciphers();
1494 fprintf(stderr, "ssl_create_cipher_list() for %d ciphers\n",
1496 #endif /* KSSL_DEBUG */
1498 (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
1499 if (co_list == NULL) {
1500 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1501 return (NULL); /* Failure */
1504 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1505 disabled_mkey, disabled_auth, disabled_enc,
1506 disabled_mac, disabled_ssl, co_list, &head,
1509 /* Now arrange all ciphers by preference: */
1512 * Everything else being equal, prefer ephemeral ECDH over other key
1513 * exchange mechanisms
1515 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head,
1517 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head,
1520 /* AES is our preferred symmetric cipher */
1521 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head,
1524 /* Temporarily enable everything else for sorting */
1525 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1527 /* Low priority for MD5 */
1528 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head,
1532 * Move anonymous ciphers to the end. Usually, these will remain
1533 * disabled. (For applications that allow them, they aren't too bad, but
1534 * we prefer authenticated ciphers.)
1536 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1539 /* Move ciphers without forward secrecy to the end */
1540 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1543 * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1,
1546 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1548 ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1550 ssl_cipher_apply_rule(0, SSL_kKRB5, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
1553 /* RC4 is sort-of broken -- move the the end */
1554 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head,
1558 * Now sort by symmetric encryption strength. The above ordering remains
1559 * in force within each class
1561 if (!ssl_cipher_strength_sort(&head, &tail)) {
1562 OPENSSL_free(co_list);
1566 /* Now disable everything (maintaining the ordering!) */
1567 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1570 * We also need cipher aliases for selecting based on the rule_str.
1571 * There might be two types of entries in the rule_str: 1) names
1572 * of ciphers themselves 2) aliases for groups of ciphers.
1573 * For 1) we need the available ciphers and for 2) the cipher
1574 * groups of cipher_aliases added together in one list (otherwise
1575 * we would be happy with just the cipher_aliases table).
1577 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
1578 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1579 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
1580 if (ca_list == NULL) {
1581 OPENSSL_free(co_list);
1582 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1583 return (NULL); /* Failure */
1585 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1586 disabled_mkey, disabled_auth, disabled_enc,
1587 disabled_mac, disabled_ssl, head);
1590 * If the rule_string begins with DEFAULT, apply the default rule
1591 * before using the (possibly available) additional rules.
1595 if (strncmp(rule_str, "DEFAULT", 7) == 0) {
1596 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1597 &head, &tail, ca_list);
1603 if (ok && (strlen(rule_p) > 0))
1604 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list);
1606 OPENSSL_free((void *)ca_list); /* Not needed anymore */
1608 if (!ok) { /* Rule processing failure */
1609 OPENSSL_free(co_list);
1614 * Allocate new "cipherstack" for the result, return with error
1615 * if we cannot get one.
1617 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) {
1618 OPENSSL_free(co_list);
1623 * The cipher selection for the list is done. The ciphers are added
1624 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1626 for (curr = head; curr != NULL; curr = curr->next) {
1629 && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS))
1634 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1636 fprintf(stderr, "<%s>\n", curr->cipher->name);
1640 OPENSSL_free(co_list); /* Not needed any longer */
1642 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1643 if (tmp_cipher_list == NULL) {
1644 sk_SSL_CIPHER_free(cipherstack);
1647 if (*cipher_list != NULL)
1648 sk_SSL_CIPHER_free(*cipher_list);
1649 *cipher_list = cipherstack;
1650 if (*cipher_list_by_id != NULL)
1651 sk_SSL_CIPHER_free(*cipher_list_by_id);
1652 *cipher_list_by_id = tmp_cipher_list;
1653 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,
1654 ssl_cipher_ptr_id_cmp);
1656 sk_SSL_CIPHER_sort(*cipher_list_by_id);
1657 return (cipherstack);
1660 char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
1662 int is_export, pkl, kl;
1663 const char *ver, *exp_str;
1664 const char *kx, *au, *enc, *mac;
1665 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, alg2;
1667 static const char *format =
1668 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n";
1670 static const char *format =
1671 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1672 #endif /* KSSL_DEBUG */
1674 alg_mkey = cipher->algorithm_mkey;
1675 alg_auth = cipher->algorithm_auth;
1676 alg_enc = cipher->algorithm_enc;
1677 alg_mac = cipher->algorithm_mac;
1678 alg_ssl = cipher->algorithm_ssl;
1680 alg2 = cipher->algorithm2;
1682 is_export = SSL_C_IS_EXPORT(cipher);
1683 pkl = SSL_C_EXPORT_PKEYLENGTH(cipher);
1684 kl = SSL_C_EXPORT_KEYLENGTH(cipher);
1685 exp_str = is_export ? " export" : "";
1687 if (alg_ssl & SSL_SSLV2)
1689 else if (alg_ssl & SSL_SSLV3)
1691 else if (alg_ssl & SSL_TLSV1_2)
1698 kx = is_export ? (pkl == 512 ? "RSA(512)" : "RSA(1024)") : "RSA";
1710 kx = is_export ? (pkl == 512 ? "DH(512)" : "DH(1024)") : "DH";
1775 enc = (is_export && kl == 5) ? "DES(40)" : "DES(56)";
1781 enc = is_export ? (kl == 5 ? "RC4(40)" : "RC4(56)")
1782 : ((alg2 & SSL2_CF_8_BYTE_ENC) ? "RC4(64)" : "RC4(128)");
1785 enc = is_export ? (kl == 5 ? "RC2(40)" : "RC2(56)") : "RC2(128)";
1800 enc = "AESGCM(128)";
1803 enc = "AESGCM(256)";
1805 case SSL_CAMELLIA128:
1806 enc = "Camellia(128)";
1808 case SSL_CAMELLIA256:
1809 enc = "Camellia(256)";
1814 case SSL_eGOST2814789CNT:
1815 enc = "GOST89(256)";
1851 buf = OPENSSL_malloc(len);
1853 return ("OPENSSL_malloc Error");
1854 } else if (len < 128)
1855 return ("Buffer too small");
1858 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac,
1859 exp_str, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl);
1861 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac,
1863 #endif /* KSSL_DEBUG */
1867 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1873 i = (int)(c->id >> 24L);
1875 return ("TLSv1/SSLv3");
1882 /* return the actual cipher being used */
1883 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1890 /* number of bits for symmetric cipher */
1891 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1896 if (alg_bits != NULL)
1897 *alg_bits = c->alg_bits;
1898 ret = c->strength_bits;
1903 unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c)
1908 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1913 if ((n == 0) || (sk == NULL))
1915 nn = sk_SSL_COMP_num(sk);
1916 for (i = 0; i < nn; i++) {
1917 ctmp = sk_SSL_COMP_value(sk, i);
1924 #ifdef OPENSSL_NO_COMP
1925 void *SSL_COMP_get_compression_methods(void)
1930 int SSL_COMP_add_compression_method(int id, void *cm)
1935 const char *SSL_COMP_get_name(const void *comp)
1940 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1942 load_builtin_compressions();
1943 return (ssl_comp_methods);
1946 STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP)
1949 STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods;
1950 ssl_comp_methods = meths;
1954 static void cmeth_free(SSL_COMP *cm)
1959 void SSL_COMP_free_compression_methods(void)
1961 STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods;
1962 ssl_comp_methods = NULL;
1963 sk_SSL_COMP_pop_free(old_meths, cmeth_free);
1966 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1970 if (cm == NULL || cm->type == NID_undef)
1974 * According to draft-ietf-tls-compression-04.txt, the
1975 * compression number ranges should be the following:
1977 * 0 to 63: methods defined by the IETF
1978 * 64 to 192: external party methods assigned by IANA
1979 * 193 to 255: reserved for private use
1981 if (id < 193 || id > 255) {
1982 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1983 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1988 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1991 load_builtin_compressions();
1992 if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) {
1995 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,
1996 SSL_R_DUPLICATE_COMPRESSION_ID);
1998 } else if ((ssl_comp_methods == NULL)
1999 || !sk_SSL_COMP_push(ssl_comp_methods, comp)) {
2002 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE);
2010 const char *SSL_COMP_get_name(const COMP_METHOD *comp)
2017 /* For a cipher return the index corresponding to the certificate type */
2018 int ssl_cipher_get_cert_index(const SSL_CIPHER *c)
2020 unsigned long alg_k, alg_a;
2022 alg_k = c->algorithm_mkey;
2023 alg_a = c->algorithm_auth;
2025 if (alg_k & (SSL_kECDHr | SSL_kECDHe)) {
2027 * we don't need to look at SSL_kEECDH since no certificate is needed
2028 * for anon ECDH and for authenticated EECDH, the check for the auth
2029 * algorithm will set i correctly NOTE: For ECDH-RSA, we need an ECC
2030 * not an RSA cert but for EECDH-RSA we need an RSA cert. Placing the
2031 * checks for SSL_kECDH before RSA checks ensures the correct cert is
2034 return SSL_PKEY_ECC;
2035 } else if (alg_a & SSL_aECDSA)
2036 return SSL_PKEY_ECC;
2037 else if (alg_k & SSL_kDHr)
2038 return SSL_PKEY_DH_RSA;
2039 else if (alg_k & SSL_kDHd)
2040 return SSL_PKEY_DH_DSA;
2041 else if (alg_a & SSL_aDSS)
2042 return SSL_PKEY_DSA_SIGN;
2043 else if (alg_a & SSL_aRSA)
2044 return SSL_PKEY_RSA_ENC;
2045 else if (alg_a & SSL_aKRB5)
2046 /* VRS something else here? */
2048 else if (alg_a & SSL_aGOST94)
2049 return SSL_PKEY_GOST94;
2050 else if (alg_a & SSL_aGOST01)
2051 return SSL_PKEY_GOST01;
2055 const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr)
2057 const SSL_CIPHER *c;
2058 c = ssl->method->get_cipher_by_char(ptr);
2059 if (c == NULL || c->valid == 0)
2064 const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr)
2066 return ssl->method->get_cipher_by_char(ptr);