1 /* ssl/ssl_ciph.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
57 */
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
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
71 * distribution.
72 *
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/)"
77 *
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.
82 *
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.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
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 * ====================================================================
105 *
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).
109 *
110 */
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.
115 */
116 /* ====================================================================
117 * Copyright 2005 Nokia. All rights reserved.
118 *
119 * The portions of the attached software ("Contribution") is developed by
120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
121 * license.
122 *
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.
126 *
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.
130 *
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.
135 *
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
140 * OTHERWISE.
141 */
142
143 #include <stdio.h>
144 #include <openssl/objects.h>
145 #ifndef OPENSSL_NO_COMP
146 #include <openssl/comp.h>
147 #endif
148 #ifndef OPENSSL_NO_ENGINE
149 #include <openssl/engine.h>
150 #endif
151 #include "ssl_locl.h"
152
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
168
169
170 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={
171 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL
172 };
173
174 #define SSL_COMP_NULL_IDX 0
175 #define SSL_COMP_ZLIB_IDX 1
176 #define SSL_COMP_NUM_IDX 2
177
178 static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL;
179
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
186 /*Constant SSL_MAX_DIGEST equal to size of digests array should be
187 * defined in the
188 * ssl_locl.h */
189 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
190 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={
191 NULL,NULL,NULL,NULL,NULL,NULL
192 };
193 /* PKEY_TYPE for GOST89MAC is known in advance, but, because
194 * implementation is engine-provided, we'll fill it only if
195 * corresponding EVP_PKEY_METHOD is found
196 */
197 static int ssl_mac_pkey_id[SSL_MD_NUM_IDX]={
198 EVP_PKEY_HMAC,EVP_PKEY_HMAC,EVP_PKEY_HMAC,NID_undef,
199 EVP_PKEY_HMAC,EVP_PKEY_HMAC
200 };
201
202 static int ssl_mac_secret_size[SSL_MD_NUM_IDX]={
203 0,0,0,0,0,0
204 };
205
206 static int ssl_handshake_digest_flag[SSL_MD_NUM_IDX]={
207 SSL_HANDSHAKE_MAC_MD5,SSL_HANDSHAKE_MAC_SHA,
208 SSL_HANDSHAKE_MAC_GOST94, 0, SSL_HANDSHAKE_MAC_SHA256,
209 SSL_HANDSHAKE_MAC_SHA384
210 };
211
212 #define CIPHER_ADD 1
213 #define CIPHER_KILL 2
214 #define CIPHER_DEL 3
215 #define CIPHER_ORD 4
216 #define CIPHER_SPECIAL 5
217
218 typedef struct cipher_order_st
219 {
220 const SSL_CIPHER *cipher;
221 int active;
222 int dead;
223 struct cipher_order_st *next,*prev;
224 } CIPHER_ORDER;
225
226 static const SSL_CIPHER cipher_aliases[]={
227 /* "ALL" doesn't include eNULL (must be specifically enabled) */
228 {0,SSL_TXT_ALL,0, 0,0,~SSL_eNULL,0,0,0,0,0,0},
229 /* "COMPLEMENTOFALL" */
230 {0,SSL_TXT_CMPALL,0, 0,0,SSL_eNULL,0,0,0,0,0,0},
231
232 /* "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in ALL!) */
233 {0,SSL_TXT_CMPDEF,0, SSL_kEDH|SSL_kEECDH,SSL_aNULL,~SSL_eNULL,0,0,0,0,0,0},
234
235 /* key exchange aliases
236 * (some of those using only a single bit here combine
237 * multiple key exchange algs according to the RFCs,
238 * e.g. kEDH combines DHE_DSS and DHE_RSA) */
239 {0,SSL_TXT_kRSA,0, SSL_kRSA, 0,0,0,0,0,0,0,0},
240
241 {0,SSL_TXT_kDHr,0, SSL_kDHr, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
242 {0,SSL_TXT_kDHd,0, SSL_kDHd, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
243 {0,SSL_TXT_kDH,0, SSL_kDHr|SSL_kDHd,0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
244 {0,SSL_TXT_kEDH,0, SSL_kEDH, 0,0,0,0,0,0,0,0},
245 {0,SSL_TXT_DH,0, SSL_kDHr|SSL_kDHd|SSL_kEDH,0,0,0,0,0,0,0,0},
246
247 {0,SSL_TXT_kKRB5,0, SSL_kKRB5, 0,0,0,0,0,0,0,0},
248
249 {0,SSL_TXT_kECDHr,0, SSL_kECDHr,0,0,0,0,0,0,0,0},
250 {0,SSL_TXT_kECDHe,0, SSL_kECDHe,0,0,0,0,0,0,0,0},
251 {0,SSL_TXT_kECDH,0, SSL_kECDHr|SSL_kECDHe,0,0,0,0,0,0,0,0},
252 {0,SSL_TXT_kEECDH,0, SSL_kEECDH,0,0,0,0,0,0,0,0},
253 {0,SSL_TXT_ECDH,0, SSL_kECDHr|SSL_kECDHe|SSL_kEECDH,0,0,0,0,0,0,0,0},
254
255 {0,SSL_TXT_kPSK,0, SSL_kPSK, 0,0,0,0,0,0,0,0},
256 {0,SSL_TXT_kSRP,0, SSL_kSRP, 0,0,0,0,0,0,0,0},
257 {0,SSL_TXT_kGOST,0, SSL_kGOST,0,0,0,0,0,0,0,0},
258
259 /* server authentication aliases */
260 {0,SSL_TXT_aRSA,0, 0,SSL_aRSA, 0,0,0,0,0,0,0},
261 {0,SSL_TXT_aDSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0},
262 {0,SSL_TXT_DSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0},
263 {0,SSL_TXT_aKRB5,0, 0,SSL_aKRB5, 0,0,0,0,0,0,0},
264 {0,SSL_TXT_aNULL,0, 0,SSL_aNULL, 0,0,0,0,0,0,0},
265 {0,SSL_TXT_aDH,0, 0,SSL_aDH, 0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
266 {0,SSL_TXT_aECDH,0, 0,SSL_aECDH, 0,0,0,0,0,0,0},
267 {0,SSL_TXT_aECDSA,0, 0,SSL_aECDSA,0,0,0,0,0,0,0},
268 {0,SSL_TXT_ECDSA,0, 0,SSL_aECDSA, 0,0,0,0,0,0,0},
269 {0,SSL_TXT_aPSK,0, 0,SSL_aPSK, 0,0,0,0,0,0,0},
270 {0,SSL_TXT_aGOST94,0,0,SSL_aGOST94,0,0,0,0,0,0,0},
271 {0,SSL_TXT_aGOST01,0,0,SSL_aGOST01,0,0,0,0,0,0,0},
272 {0,SSL_TXT_aGOST,0,0,SSL_aGOST94|SSL_aGOST01,0,0,0,0,0,0,0},
273 {0,SSL_TXT_aSRP,0, 0,SSL_aSRP, 0,0,0,0,0,0,0},
274
275 /* aliases combining key exchange and server authentication */
276 {0,SSL_TXT_EDH,0, SSL_kEDH,~SSL_aNULL,0,0,0,0,0,0,0},
277 {0,SSL_TXT_EECDH,0, SSL_kEECDH,~SSL_aNULL,0,0,0,0,0,0,0},
278 {0,SSL_TXT_NULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0},
279 {0,SSL_TXT_KRB5,0, SSL_kKRB5,SSL_aKRB5,0,0,0,0,0,0,0},
280 {0,SSL_TXT_RSA,0, SSL_kRSA,SSL_aRSA,0,0,0,0,0,0,0},
281 {0,SSL_TXT_ADH,0, SSL_kEDH,SSL_aNULL,0,0,0,0,0,0,0},
282 {0,SSL_TXT_AECDH,0, SSL_kEECDH,SSL_aNULL,0,0,0,0,0,0,0},
283 {0,SSL_TXT_PSK,0, SSL_kPSK,SSL_aPSK,0,0,0,0,0,0,0},
284 {0,SSL_TXT_SRP,0, SSL_kSRP,0,0,0,0,0,0,0,0},
285
286
287 /* symmetric encryption aliases */
288 {0,SSL_TXT_DES,0, 0,0,SSL_DES, 0,0,0,0,0,0},
289 {0,SSL_TXT_3DES,0, 0,0,SSL_3DES, 0,0,0,0,0,0},
290 {0,SSL_TXT_RC4,0, 0,0,SSL_RC4, 0,0,0,0,0,0},
291 {0,SSL_TXT_RC2,0, 0,0,SSL_RC2, 0,0,0,0,0,0},
292 {0,SSL_TXT_IDEA,0, 0,0,SSL_IDEA, 0,0,0,0,0,0},
293 {0,SSL_TXT_SEED,0, 0,0,SSL_SEED, 0,0,0,0,0,0},
294 {0,SSL_TXT_eNULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0},
295 {0,SSL_TXT_AES128,0, 0,0,SSL_AES128|SSL_AES128GCM,0,0,0,0,0,0},
296 {0,SSL_TXT_AES256,0, 0,0,SSL_AES256|SSL_AES256GCM,0,0,0,0,0,0},
297 {0,SSL_TXT_AES,0, 0,0,SSL_AES,0,0,0,0,0,0},
298 {0,SSL_TXT_AES_GCM,0, 0,0,SSL_AES128GCM|SSL_AES256GCM,0,0,0,0,0,0},
299 {0,SSL_TXT_CAMELLIA128,0,0,0,SSL_CAMELLIA128,0,0,0,0,0,0},
300 {0,SSL_TXT_CAMELLIA256,0,0,0,SSL_CAMELLIA256,0,0,0,0,0,0},
301 {0,SSL_TXT_CAMELLIA ,0,0,0,SSL_CAMELLIA128|SSL_CAMELLIA256,0,0,0,0,0,0},
302
303 /* MAC aliases */
304 {0,SSL_TXT_MD5,0, 0,0,0,SSL_MD5, 0,0,0,0,0},
305 {0,SSL_TXT_SHA1,0, 0,0,0,SSL_SHA1, 0,0,0,0,0},
306 {0,SSL_TXT_SHA,0, 0,0,0,SSL_SHA1, 0,0,0,0,0},
307 {0,SSL_TXT_GOST94,0, 0,0,0,SSL_GOST94, 0,0,0,0,0},
308 {0,SSL_TXT_GOST89MAC,0, 0,0,0,SSL_GOST89MAC, 0,0,0,0,0},
309 {0,SSL_TXT_SHA256,0, 0,0,0,SSL_SHA256, 0,0,0,0,0},
310 {0,SSL_TXT_SHA384,0, 0,0,0,SSL_SHA384, 0,0,0,0,0},
311
312 /* protocol version aliases */
313 {0,SSL_TXT_SSLV2,0, 0,0,0,0,SSL_SSLV2, 0,0,0,0},
314 {0,SSL_TXT_SSLV3,0, 0,0,0,0,SSL_SSLV3, 0,0,0,0},
315 {0,SSL_TXT_TLSV1,0, 0,0,0,0,SSL_TLSV1, 0,0,0,0},
316 {0,SSL_TXT_TLSV1_2,0, 0,0,0,0,SSL_TLSV1_2, 0,0,0,0},
317
318 /* export flag */
319 {0,SSL_TXT_EXP,0, 0,0,0,0,0,SSL_EXPORT,0,0,0},
320 {0,SSL_TXT_EXPORT,0, 0,0,0,0,0,SSL_EXPORT,0,0,0},
321
322 /* strength classes */
323 {0,SSL_TXT_EXP40,0, 0,0,0,0,0,SSL_EXP40, 0,0,0},
324 {0,SSL_TXT_EXP56,0, 0,0,0,0,0,SSL_EXP56, 0,0,0},
325 {0,SSL_TXT_LOW,0, 0,0,0,0,0,SSL_LOW, 0,0,0},
326 {0,SSL_TXT_MEDIUM,0, 0,0,0,0,0,SSL_MEDIUM,0,0,0},
327 {0,SSL_TXT_HIGH,0, 0,0,0,0,0,SSL_HIGH, 0,0,0},
328 /* FIPS 140-2 approved ciphersuite */
329 {0,SSL_TXT_FIPS,0, 0,0,~SSL_eNULL,0,0,SSL_FIPS, 0,0,0},
330 };
331 /* Search for public key algorithm with given name and
332 * return its pkey_id if it is available. Otherwise return 0
333 */
334 #ifdef OPENSSL_NO_ENGINE
335
336 static int get_optional_pkey_id(const char *pkey_name)
337 {
338 const EVP_PKEY_ASN1_METHOD *ameth;
339 int pkey_id=0;
340 ameth = EVP_PKEY_asn1_find_str(NULL,pkey_name,-1);
341 if (ameth)
342 {
343 EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth);
344 }
345 return pkey_id;
346 }
347
348 #else
349
350 static int get_optional_pkey_id(const char *pkey_name)
351 {
352 const EVP_PKEY_ASN1_METHOD *ameth;
353 ENGINE *tmpeng = NULL;
354 int pkey_id=0;
355 ameth = EVP_PKEY_asn1_find_str(&tmpeng,pkey_name,-1);
356 if (ameth)
357 {
358 EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth);
359 }
360 if (tmpeng) ENGINE_finish(tmpeng);
361 return pkey_id;
362 }
363
364 #endif
365
366 void ssl_load_ciphers(void)
367 {
368 ssl_cipher_methods[SSL_ENC_DES_IDX]=
369 EVP_get_cipherbyname(SN_des_cbc);
370 ssl_cipher_methods[SSL_ENC_3DES_IDX]=
371 EVP_get_cipherbyname(SN_des_ede3_cbc);
372 ssl_cipher_methods[SSL_ENC_RC4_IDX]=
373 EVP_get_cipherbyname(SN_rc4);
374 ssl_cipher_methods[SSL_ENC_RC2_IDX]=
375 EVP_get_cipherbyname(SN_rc2_cbc);
376 #ifndef OPENSSL_NO_IDEA
377 ssl_cipher_methods[SSL_ENC_IDEA_IDX]=
378 EVP_get_cipherbyname(SN_idea_cbc);
379 #else
380 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL;
381 #endif
382 ssl_cipher_methods[SSL_ENC_AES128_IDX]=
383 EVP_get_cipherbyname(SN_aes_128_cbc);
384 ssl_cipher_methods[SSL_ENC_AES256_IDX]=
385 EVP_get_cipherbyname(SN_aes_256_cbc);
386 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]=
387 EVP_get_cipherbyname(SN_camellia_128_cbc);
388 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]=
389 EVP_get_cipherbyname(SN_camellia_256_cbc);
390 ssl_cipher_methods[SSL_ENC_GOST89_IDX]=
391 EVP_get_cipherbyname(SN_gost89_cnt);
392 ssl_cipher_methods[SSL_ENC_SEED_IDX]=
393 EVP_get_cipherbyname(SN_seed_cbc);
394
395 ssl_cipher_methods[SSL_ENC_AES128GCM_IDX]=
396 EVP_get_cipherbyname(SN_aes_128_gcm);
397 ssl_cipher_methods[SSL_ENC_AES256GCM_IDX]=
398 EVP_get_cipherbyname(SN_aes_256_gcm);
399
400 ssl_digest_methods[SSL_MD_MD5_IDX]=
401 EVP_get_digestbyname(SN_md5);
402 ssl_mac_secret_size[SSL_MD_MD5_IDX]=
403 EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]);
404 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0);
405 ssl_digest_methods[SSL_MD_SHA1_IDX]=
406 EVP_get_digestbyname(SN_sha1);
407 ssl_mac_secret_size[SSL_MD_SHA1_IDX]=
408 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]);
409 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0);
410 ssl_digest_methods[SSL_MD_GOST94_IDX]=
411 EVP_get_digestbyname(SN_id_GostR3411_94);
412 if (ssl_digest_methods[SSL_MD_GOST94_IDX])
413 {
414 ssl_mac_secret_size[SSL_MD_GOST94_IDX]=
415 EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]);
416 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0);
417 }
418 ssl_digest_methods[SSL_MD_GOST89MAC_IDX]=
419 EVP_get_digestbyname(SN_id_Gost28147_89_MAC);
420 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac");
421 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) {
422 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX]=32;
423 }
424
425 ssl_digest_methods[SSL_MD_SHA256_IDX]=
426 EVP_get_digestbyname(SN_sha256);
427 ssl_mac_secret_size[SSL_MD_SHA256_IDX]=
428 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]);
429 ssl_digest_methods[SSL_MD_SHA384_IDX]=
430 EVP_get_digestbyname(SN_sha384);
431 ssl_mac_secret_size[SSL_MD_SHA384_IDX]=
432 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]);
433 }
434 #ifndef OPENSSL_NO_COMP
435
436 static int sk_comp_cmp(const SSL_COMP * const *a,
437 const SSL_COMP * const *b)
438 {
439 return((*a)->id-(*b)->id);
440 }
441
442 static void load_builtin_compressions(void)
443 {
444 int got_write_lock = 0;
445
446 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
447 if (ssl_comp_methods == NULL)
448 {
449 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
450 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
451 got_write_lock = 1;
452
453 if (ssl_comp_methods == NULL)
454 {
455 SSL_COMP *comp = NULL;
456
457 MemCheck_off();
458 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp);
459 if (ssl_comp_methods != NULL)
460 {
461 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
462 if (comp != NULL)
463 {
464 comp->method=COMP_zlib();
465 if (comp->method
466 && comp->method->type == NID_undef)
467 OPENSSL_free(comp);
468 else
469 {
470 comp->id=SSL_COMP_ZLIB_IDX;
471 comp->name=comp->method->name;
472 sk_SSL_COMP_push(ssl_comp_methods,comp);
473 }
474 }
475 sk_SSL_COMP_sort(ssl_comp_methods);
476 }
477 MemCheck_on();
478 }
479 }
480
481 if (got_write_lock)
482 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
483 else
484 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
485 }
486 #endif
487
488 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
489 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size,SSL_COMP **comp)
490 {
491 int i;
492 const SSL_CIPHER *c;
493
494 c=s->cipher;
495 if (c == NULL) return(0);
496 if (comp != NULL)
497 {
498 SSL_COMP ctmp;
499 #ifndef OPENSSL_NO_COMP
500 load_builtin_compressions();
501 #endif
502
503 *comp=NULL;
504 ctmp.id=s->compress_meth;
505 if (ssl_comp_methods != NULL)
506 {
507 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
508 if (i >= 0)
509 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
510 else
511 *comp=NULL;
512 }
513 }
514
515 if ((enc == NULL) || (md == NULL)) return(0);
516
517 switch (c->algorithm_enc)
518 {
519 case SSL_DES:
520 i=SSL_ENC_DES_IDX;
521 break;
522 case SSL_3DES:
523 i=SSL_ENC_3DES_IDX;
524 break;
525 case SSL_RC4:
526 i=SSL_ENC_RC4_IDX;
527 break;
528 case SSL_RC2:
529 i=SSL_ENC_RC2_IDX;
530 break;
531 case SSL_IDEA:
532 i=SSL_ENC_IDEA_IDX;
533 break;
534 case SSL_eNULL:
535 i=SSL_ENC_NULL_IDX;
536 break;
537 case SSL_AES128:
538 i=SSL_ENC_AES128_IDX;
539 break;
540 case SSL_AES256:
541 i=SSL_ENC_AES256_IDX;
542 break;
543 case SSL_CAMELLIA128:
544 i=SSL_ENC_CAMELLIA128_IDX;
545 break;
546 case SSL_CAMELLIA256:
547 i=SSL_ENC_CAMELLIA256_IDX;
548 break;
549 case SSL_eGOST2814789CNT:
550 i=SSL_ENC_GOST89_IDX;
551 break;
552 case SSL_SEED:
553 i=SSL_ENC_SEED_IDX;
554 break;
555 case SSL_AES128GCM:
556 i=SSL_ENC_AES128GCM_IDX;
557 break;
558 case SSL_AES256GCM:
559 i=SSL_ENC_AES256GCM_IDX;
560 break;
561 default:
562 i= -1;
563 break;
564 }
565
566 if ((i < 0) || (i >= SSL_ENC_NUM_IDX))
567 *enc=NULL;
568 else
569 {
570 if (i == SSL_ENC_NULL_IDX)
571 *enc=EVP_enc_null();
572 else
573 *enc=ssl_cipher_methods[i];
574 }
575
576 switch (c->algorithm_mac)
577 {
578 case SSL_MD5:
579 i=SSL_MD_MD5_IDX;
580 break;
581 case SSL_SHA1:
582 i=SSL_MD_SHA1_IDX;
583 break;
584 case SSL_SHA256:
585 i=SSL_MD_SHA256_IDX;
586 break;
587 case SSL_SHA384:
588 i=SSL_MD_SHA384_IDX;
589 break;
590 case SSL_GOST94:
591 i = SSL_MD_GOST94_IDX;
592 break;
593 case SSL_GOST89MAC:
594 i = SSL_MD_GOST89MAC_IDX;
595 break;
596 default:
597 i= -1;
598 break;
599 }
600 if ((i < 0) || (i >= SSL_MD_NUM_IDX))
601 {
602 *md=NULL;
603 if (mac_pkey_type!=NULL) *mac_pkey_type = NID_undef;
604 if (mac_secret_size!=NULL) *mac_secret_size = 0;
605 if (c->algorithm_mac == SSL_AEAD)
606 mac_pkey_type = NULL;
607 }
608 else
609 {
610 *md=ssl_digest_methods[i];
611 if (mac_pkey_type!=NULL) *mac_pkey_type = ssl_mac_pkey_id[i];
612 if (mac_secret_size!=NULL) *mac_secret_size = ssl_mac_secret_size[i];
613 }
614
615 if ((*enc != NULL) &&
616 (*md != NULL || (EVP_CIPHER_flags(*enc)&EVP_CIPH_FLAG_AEAD_CIPHER)) &&
617 (!mac_pkey_type||*mac_pkey_type != NID_undef))
618 {
619 const EVP_CIPHER *evp;
620
621 if (s->ssl_version>>8 != TLS1_VERSION_MAJOR ||
622 s->ssl_version < TLS1_VERSION)
623 return 1;
624
625 #ifdef OPENSSL_FIPS
626 if (FIPS_mode())
627 return 1;
628 #endif
629
630 if (c->algorithm_enc == SSL_RC4 &&
631 c->algorithm_mac == SSL_MD5 &&
632 (evp=EVP_get_cipherbyname("RC4-HMAC-MD5")))
633 *enc = evp, *md = NULL;
634 else if (c->algorithm_enc == SSL_AES128 &&
635 c->algorithm_mac == SSL_SHA1 &&
636 (evp=EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
637 *enc = evp, *md = NULL;
638 else if (c->algorithm_enc == SSL_AES256 &&
639 c->algorithm_mac == SSL_SHA1 &&
640 (evp=EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
641 *enc = evp, *md = NULL;
642 return(1);
643 }
644 else
645 return(0);
646 }
647
648 int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md)
649 {
650 if (idx <0||idx>=SSL_MD_NUM_IDX)
651 {
652 return 0;
653 }
654 *mask = ssl_handshake_digest_flag[idx];
655 if (*mask)
656 *md = ssl_digest_methods[idx];
657 else
658 *md = NULL;
659 return 1;
660 }
661
662 #define ITEM_SEP(a) \
663 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
664
665 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
666 CIPHER_ORDER **tail)
667 {
668 if (curr == *tail) return;
669 if (curr == *head)
670 *head=curr->next;
671 if (curr->prev != NULL)
672 curr->prev->next=curr->next;
673 if (curr->next != NULL)
674 curr->next->prev=curr->prev;
675 (*tail)->next=curr;
676 curr->prev= *tail;
677 curr->next=NULL;
678 *tail=curr;
679 }
680
681 static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
682 CIPHER_ORDER **tail)
683 {
684 if (curr == *head) return;
685 if (curr == *tail)
686 *tail=curr->prev;
687 if (curr->next != NULL)
688 curr->next->prev=curr->prev;
689 if (curr->prev != NULL)
690 curr->prev->next=curr->next;
691 (*head)->prev=curr;
692 curr->next= *head;
693 curr->prev=NULL;
694 *head=curr;
695 }
696
697 static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl)
698 {
699 *mkey = 0;
700 *auth = 0;
701 *enc = 0;
702 *mac = 0;
703 *ssl = 0;
704
705 #ifdef OPENSSL_NO_RSA
706 *mkey |= SSL_kRSA;
707 *auth |= SSL_aRSA;
708 #endif
709 #ifdef OPENSSL_NO_DSA
710 *auth |= SSL_aDSS;
711 #endif
712 *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */
713 *auth |= SSL_aDH;
714 #ifdef OPENSSL_NO_DH
715 *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH;
716 *auth |= SSL_aDH;
717 #endif
718 #ifdef OPENSSL_NO_KRB5
719 *mkey |= SSL_kKRB5;
720 *auth |= SSL_aKRB5;
721 #endif
722 #ifdef OPENSSL_NO_ECDSA
723 *auth |= SSL_aECDSA;
724 #endif
725 #ifdef OPENSSL_NO_ECDH
726 *mkey |= SSL_kECDHe|SSL_kECDHr;
727 *auth |= SSL_aECDH;
728 #endif
729 #ifdef OPENSSL_NO_PSK
730 *mkey |= SSL_kPSK;
731 *auth |= SSL_aPSK;
732 #endif
733 #ifdef OPENSSL_NO_SRP
734 *mkey |= SSL_kSRP;
735 #endif
736 /* Check for presence of GOST 34.10 algorithms, and if they
737 * do not present, disable appropriate auth and key exchange */
738 if (!get_optional_pkey_id("gost94")) {
739 *auth |= SSL_aGOST94;
740 }
741 if (!get_optional_pkey_id("gost2001")) {
742 *auth |= SSL_aGOST01;
743 }
744 /* Disable GOST key exchange if no GOST signature algs are available * */
745 if ((*auth & (SSL_aGOST94|SSL_aGOST01)) == (SSL_aGOST94|SSL_aGOST01)) {
746 *mkey |= SSL_kGOST;
747 }
748 #ifdef SSL_FORBID_ENULL
749 *enc |= SSL_eNULL;
750 #endif
751
752
753
754 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0;
755 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0;
756 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0;
757 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0;
758 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0;
759 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0;
760 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0;
761 *enc |= (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] == NULL) ? SSL_AES128GCM:0;
762 *enc |= (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] == NULL) ? SSL_AES256GCM:0;
763 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0;
764 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0;
765 *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0;
766 *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0;
767
768 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0;
769 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0;
770 *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256:0;
771 *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384:0;
772 *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94:0;
773 *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef)? SSL_GOST89MAC:0;
774
775 }
776
777 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
778 int num_of_ciphers,
779 unsigned long disabled_mkey, unsigned long disabled_auth,
780 unsigned long disabled_enc, unsigned long disabled_mac,
781 unsigned long disabled_ssl,
782 CIPHER_ORDER *co_list,
783 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
784 {
785 int i, co_list_num;
786 const SSL_CIPHER *c;
787
788 /*
789 * We have num_of_ciphers descriptions compiled in, depending on the
790 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
791 * These will later be sorted in a linked list with at most num
792 * entries.
793 */
794
795 /* Get the initial list of ciphers */
796 co_list_num = 0; /* actual count of ciphers */
797 for (i = 0; i < num_of_ciphers; i++)
798 {
799 c = ssl_method->get_cipher(i);
800 /* drop those that use any of that is not available */
801 if ((c != NULL) && c->valid &&
802 #ifdef OPENSSL_FIPS
803 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) &&
804 #endif
805 !(c->algorithm_mkey & disabled_mkey) &&
806 !(c->algorithm_auth & disabled_auth) &&
807 !(c->algorithm_enc & disabled_enc) &&
808 !(c->algorithm_mac & disabled_mac) &&
809 !(c->algorithm_ssl & disabled_ssl))
810 {
811 co_list[co_list_num].cipher = c;
812 co_list[co_list_num].next = NULL;
813 co_list[co_list_num].prev = NULL;
814 co_list[co_list_num].active = 0;
815 co_list_num++;
816 #ifdef KSSL_DEBUG
817 printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth);
818 #endif /* KSSL_DEBUG */
819 /*
820 if (!sk_push(ca_list,(char *)c)) goto err;
821 */
822 }
823 }
824
825 /*
826 * Prepare linked list from list entries
827 */
828 if (co_list_num > 0)
829 {
830 co_list[0].prev = NULL;
831
832 if (co_list_num > 1)
833 {
834 co_list[0].next = &co_list[1];
835
836 for (i = 1; i < co_list_num - 1; i++)
837 {
838 co_list[i].prev = &co_list[i - 1];
839 co_list[i].next = &co_list[i + 1];
840 }
841
842 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
843 }
844
845 co_list[co_list_num - 1].next = NULL;
846
847 *head_p = &co_list[0];
848 *tail_p = &co_list[co_list_num - 1];
849 }
850 }
851
852 static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list,
853 int num_of_group_aliases,
854 unsigned long disabled_mkey, unsigned long disabled_auth,
855 unsigned long disabled_enc, unsigned long disabled_mac,
856 unsigned long disabled_ssl,
857 CIPHER_ORDER *head)
858 {
859 CIPHER_ORDER *ciph_curr;
860 const SSL_CIPHER **ca_curr;
861 int i;
862 unsigned long mask_mkey = ~disabled_mkey;
863 unsigned long mask_auth = ~disabled_auth;
864 unsigned long mask_enc = ~disabled_enc;
865 unsigned long mask_mac = ~disabled_mac;
866 unsigned long mask_ssl = ~disabled_ssl;
867
868 /*
869 * First, add the real ciphers as already collected
870 */
871 ciph_curr = head;
872 ca_curr = ca_list;
873 while (ciph_curr != NULL)
874 {
875 *ca_curr = ciph_curr->cipher;
876 ca_curr++;
877 ciph_curr = ciph_curr->next;
878 }
879
880 /*
881 * Now we add the available ones from the cipher_aliases[] table.
882 * They represent either one or more algorithms, some of which
883 * in any affected category must be supported (set in enabled_mask),
884 * or represent a cipher strength value (will be added in any case because algorithms=0).
885 */
886 for (i = 0; i < num_of_group_aliases; i++)
887 {
888 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey;
889 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth;
890 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc;
891 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac;
892 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl;
893
894 if (algorithm_mkey)
895 if ((algorithm_mkey & mask_mkey) == 0)
896 continue;
897
898 if (algorithm_auth)
899 if ((algorithm_auth & mask_auth) == 0)
900 continue;
901
902 if (algorithm_enc)
903 if ((algorithm_enc & mask_enc) == 0)
904 continue;
905
906 if (algorithm_mac)
907 if ((algorithm_mac & mask_mac) == 0)
908 continue;
909
910 if (algorithm_ssl)
911 if ((algorithm_ssl & mask_ssl) == 0)
912 continue;
913
914 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
915 ca_curr++;
916 }
917
918 *ca_curr = NULL; /* end of list */
919 }
920
921 static void ssl_cipher_apply_rule(unsigned long cipher_id,
922 unsigned long alg_mkey, unsigned long alg_auth,
923 unsigned long alg_enc, unsigned long alg_mac,
924 unsigned long alg_ssl,
925 unsigned long algo_strength,
926 int rule, int strength_bits,
927 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
928 {
929 CIPHER_ORDER *head, *tail, *curr, *next, *last;
930 const SSL_CIPHER *cp;
931 int reverse = 0;
932
933 #ifdef CIPHER_DEBUG
934 printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
935 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits);
936 #endif
937
938 if (rule == CIPHER_DEL)
939 reverse = 1; /* needed to maintain sorting between currently deleted ciphers */
940
941 head = *head_p;
942 tail = *tail_p;
943
944 if (reverse)
945 {
946 next = tail;
947 last = head;
948 }
949 else
950 {
951 next = head;
952 last = tail;
953 }
954
955 curr = NULL;
956 for (;;)
957 {
958 if (curr == last) break;
959
960 curr = next;
961
962 if (curr == NULL) break;
963
964 next = reverse ? curr->prev : curr->next;
965
966 cp = curr->cipher;
967
968 /*
969 * Selection criteria is either the value of strength_bits
970 * or the algorithms used.
971 */
972 if (strength_bits >= 0)
973 {
974 if (strength_bits != cp->strength_bits)
975 continue;
976 }
977 else
978 {
979 #ifdef CIPHER_DEBUG
980 printf("\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n", cp->name, cp->algorithm_mkey, cp->algorithm_auth, cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl, cp->algo_strength);
981 #endif
982
983 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
984 continue;
985 if (alg_auth && !(alg_auth & cp->algorithm_auth))
986 continue;
987 if (alg_enc && !(alg_enc & cp->algorithm_enc))
988 continue;
989 if (alg_mac && !(alg_mac & cp->algorithm_mac))
990 continue;
991 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
992 continue;
993 if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength))
994 continue;
995 if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength))
996 continue;
997 }
998
999 #ifdef CIPHER_DEBUG
1000 printf("Action = %d\n", rule);
1001 #endif
1002
1003 /* add the cipher if it has not been added yet. */
1004 if (rule == CIPHER_ADD)
1005 {
1006 /* reverse == 0 */
1007 if (!curr->active)
1008 {
1009 ll_append_tail(&head, curr, &tail);
1010 curr->active = 1;
1011 }
1012 }
1013 /* Move the added cipher to this location */
1014 else if (rule == CIPHER_ORD)
1015 {
1016 /* reverse == 0 */
1017 if (curr->active)
1018 {
1019 ll_append_tail(&head, curr, &tail);
1020 }
1021 }
1022 else if (rule == CIPHER_DEL)
1023 {
1024 /* reverse == 1 */
1025 if (curr->active)
1026 {
1027 /* most recently deleted ciphersuites get best positions
1028 * for any future CIPHER_ADD (note that the CIPHER_DEL loop
1029 * works in reverse to maintain the order) */
1030 ll_append_head(&head, curr, &tail);
1031 curr->active = 0;
1032 }
1033 }
1034 else if (rule == CIPHER_KILL)
1035 {
1036 /* reverse == 0 */
1037 if (head == curr)
1038 head = curr->next;
1039 else
1040 curr->prev->next = curr->next;
1041 if (tail == curr)
1042 tail = curr->prev;
1043 curr->active = 0;
1044 if (curr->next != NULL)
1045 curr->next->prev = curr->prev;
1046 if (curr->prev != NULL)
1047 curr->prev->next = curr->next;
1048 curr->next = NULL;
1049 curr->prev = NULL;
1050 }
1051 }
1052
1053 *head_p = head;
1054 *tail_p = tail;
1055 }
1056
1057 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
1058 CIPHER_ORDER **tail_p)
1059 {
1060 int max_strength_bits, i, *number_uses;
1061 CIPHER_ORDER *curr;
1062
1063 /*
1064 * This routine sorts the ciphers with descending strength. The sorting
1065 * must keep the pre-sorted sequence, so we apply the normal sorting
1066 * routine as '+' movement to the end of the list.
1067 */
1068 max_strength_bits = 0;
1069 curr = *head_p;
1070 while (curr != NULL)
1071 {
1072 if (curr->active &&
1073 (curr->cipher->strength_bits > max_strength_bits))
1074 max_strength_bits = curr->cipher->strength_bits;
1075 curr = curr->next;
1076 }
1077
1078 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
1079 if (!number_uses)
1080 {
1081 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE);
1082 return(0);
1083 }
1084 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
1085
1086 /*
1087 * Now find the strength_bits values actually used
1088 */
1089 curr = *head_p;
1090 while (curr != NULL)
1091 {
1092 if (curr->active)
1093 number_uses[curr->cipher->strength_bits]++;
1094 curr = curr->next;
1095 }
1096 /*
1097 * Go through the list of used strength_bits values in descending
1098 * order.
1099 */
1100 for (i = max_strength_bits; i >= 0; i--)
1101 if (number_uses[i] > 0)
1102 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p);
1103
1104 OPENSSL_free(number_uses);
1105 return(1);
1106 }
1107
1108 static int ssl_cipher_process_rulestr(const char *rule_str,
1109 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p,
1110 const SSL_CIPHER **ca_list)
1111 {
1112 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength;
1113 const char *l, *buf;
1114 int j, multi, found, rule, retval, ok, buflen;
1115 unsigned long cipher_id = 0;
1116 char ch;
1117
1118 retval = 1;
1119 l = rule_str;
1120 for (;;)
1121 {
1122 ch = *l;
1123
1124 if (ch == '\0')
1125 break; /* done */
1126 if (ch == '-')
1127 { rule = CIPHER_DEL; l++; }
1128 else if (ch == '+')
1129 { rule = CIPHER_ORD; l++; }
1130 else if (ch == '!')
1131 { rule = CIPHER_KILL; l++; }
1132 else if (ch == '@')
1133 { rule = CIPHER_SPECIAL; l++; }
1134 else
1135 { rule = CIPHER_ADD; }
1136
1137 if (ITEM_SEP(ch))
1138 {
1139 l++;
1140 continue;
1141 }
1142
1143 alg_mkey = 0;
1144 alg_auth = 0;
1145 alg_enc = 0;
1146 alg_mac = 0;
1147 alg_ssl = 0;
1148 algo_strength = 0;
1149
1150 for (;;)
1151 {
1152 ch = *l;
1153 buf = l;
1154 buflen = 0;
1155 #ifndef CHARSET_EBCDIC
1156 while ( ((ch >= 'A') && (ch <= 'Z')) ||
1157 ((ch >= '0') && (ch <= '9')) ||
1158 ((ch >= 'a') && (ch <= 'z')) ||
1159 (ch == '-') || (ch == '.'))
1160 #else
1161 while ( isalnum(ch) || (ch == '-') || (ch == '.'))
1162 #endif
1163 {
1164 ch = *(++l);
1165 buflen++;
1166 }
1167
1168 if (buflen == 0)
1169 {
1170 /*
1171 * We hit something we cannot deal with,
1172 * it is no command or separator nor
1173 * alphanumeric, so we call this an error.
1174 */
1175 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1176 SSL_R_INVALID_COMMAND);
1177 retval = found = 0;
1178 l++;
1179 break;
1180 }
1181
1182 if (rule == CIPHER_SPECIAL)
1183 {
1184 found = 0; /* unused -- avoid compiler warning */
1185 break; /* special treatment */
1186 }
1187
1188 /* check for multi-part specification */
1189 if (ch == '+')
1190 {
1191 multi=1;
1192 l++;
1193 }
1194 else
1195 multi=0;
1196
1197 /*
1198 * Now search for the cipher alias in the ca_list. Be careful
1199 * with the strncmp, because the "buflen" limitation
1200 * will make the rule "ADH:SOME" and the cipher
1201 * "ADH-MY-CIPHER" look like a match for buflen=3.
1202 * So additionally check whether the cipher name found
1203 * has the correct length. We can save a strlen() call:
1204 * just checking for the '\0' at the right place is
1205 * sufficient, we have to strncmp() anyway. (We cannot
1206 * use strcmp(), because buf is not '\0' terminated.)
1207 */
1208 j = found = 0;
1209 cipher_id = 0;
1210 while (ca_list[j])
1211 {
1212 if (!strncmp(buf, ca_list[j]->name, buflen) &&
1213 (ca_list[j]->name[buflen] == '\0'))
1214 {
1215 found = 1;
1216 break;
1217 }
1218 else
1219 j++;
1220 }
1221
1222 if (!found)
1223 break; /* ignore this entry */
1224
1225 if (ca_list[j]->algorithm_mkey)
1226 {
1227 if (alg_mkey)
1228 {
1229 alg_mkey &= ca_list[j]->algorithm_mkey;
1230 if (!alg_mkey) { found = 0; break; }
1231 }
1232 else
1233 alg_mkey = ca_list[j]->algorithm_mkey;
1234 }
1235
1236 if (ca_list[j]->algorithm_auth)
1237 {
1238 if (alg_auth)
1239 {
1240 alg_auth &= ca_list[j]->algorithm_auth;
1241 if (!alg_auth) { found = 0; break; }
1242 }
1243 else
1244 alg_auth = ca_list[j]->algorithm_auth;
1245 }
1246
1247 if (ca_list[j]->algorithm_enc)
1248 {
1249 if (alg_enc)
1250 {
1251 alg_enc &= ca_list[j]->algorithm_enc;
1252 if (!alg_enc) { found = 0; break; }
1253 }
1254 else
1255 alg_enc = ca_list[j]->algorithm_enc;
1256 }
1257
1258 if (ca_list[j]->algorithm_mac)
1259 {
1260 if (alg_mac)
1261 {
1262 alg_mac &= ca_list[j]->algorithm_mac;
1263 if (!alg_mac) { found = 0; break; }
1264 }
1265 else
1266 alg_mac = ca_list[j]->algorithm_mac;
1267 }
1268
1269 if (ca_list[j]->algo_strength & SSL_EXP_MASK)
1270 {
1271 if (algo_strength & SSL_EXP_MASK)
1272 {
1273 algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK;
1274 if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; }
1275 }
1276 else
1277 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK;
1278 }
1279
1280 if (ca_list[j]->algo_strength & SSL_STRONG_MASK)
1281 {
1282 if (algo_strength & SSL_STRONG_MASK)
1283 {
1284 algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK;
1285 if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; }
1286 }
1287 else
1288 algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK;
1289 }
1290
1291 if (ca_list[j]->valid)
1292 {
1293 /* explicit ciphersuite found; its protocol version
1294 * does not become part of the search pattern!*/
1295
1296 cipher_id = ca_list[j]->id;
1297 }
1298 else
1299 {
1300 /* not an explicit ciphersuite; only in this case, the
1301 * protocol version is considered part of the search pattern */
1302
1303 if (ca_list[j]->algorithm_ssl)
1304 {
1305 if (alg_ssl)
1306 {
1307 alg_ssl &= ca_list[j]->algorithm_ssl;
1308 if (!alg_ssl) { found = 0; break; }
1309 }
1310 else
1311 alg_ssl = ca_list[j]->algorithm_ssl;
1312 }
1313 }
1314
1315 if (!multi) break;
1316 }
1317
1318 /*
1319 * Ok, we have the rule, now apply it
1320 */
1321 if (rule == CIPHER_SPECIAL)
1322 { /* special command */
1323 ok = 0;
1324 if ((buflen == 8) &&
1325 !strncmp(buf, "STRENGTH", 8))
1326 ok = ssl_cipher_strength_sort(head_p, tail_p);
1327 else
1328 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1329 SSL_R_INVALID_COMMAND);
1330 if (ok == 0)
1331 retval = 0;
1332 /*
1333 * We do not support any "multi" options
1334 * together with "@", so throw away the
1335 * rest of the command, if any left, until
1336 * end or ':' is found.
1337 */
1338 while ((*l != '\0') && !ITEM_SEP(*l))
1339 l++;
1340 }
1341 else if (found)
1342 {
1343 ssl_cipher_apply_rule(cipher_id,
1344 alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength,
1345 rule, -1, head_p, tail_p);
1346 }
1347 else
1348 {
1349 while ((*l != '\0') && !ITEM_SEP(*l))
1350 l++;
1351 }
1352 if (*l == '\0') break; /* done */
1353 }
1354
1355 return(retval);
1356 }
1357
1358 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
1359 STACK_OF(SSL_CIPHER) **cipher_list,
1360 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
1361 const char *rule_str)
1362 {
1363 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1364 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl;
1365 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1366 const char *rule_p;
1367 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1368 const SSL_CIPHER **ca_list = NULL;
1369
1370 /*
1371 * Return with error if nothing to do.
1372 */
1373 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1374 return NULL;
1375
1376 /*
1377 * To reduce the work to do we only want to process the compiled
1378 * in algorithms, so we first get the mask of disabled ciphers.
1379 */
1380 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl);
1381
1382 /*
1383 * Now we have to collect the available ciphers from the compiled
1384 * in ciphers. We cannot get more than the number compiled in, so
1385 * it is used for allocation.
1386 */
1387 num_of_ciphers = ssl_method->num_ciphers();
1388 #ifdef KSSL_DEBUG
1389 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
1390 #endif /* KSSL_DEBUG */
1391 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
1392 if (co_list == NULL)
1393 {
1394 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1395 return(NULL); /* Failure */
1396 }
1397
1398 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1399 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl,
1400 co_list, &head, &tail);
1401
1402
1403 /* Now arrange all ciphers by preference: */
1404
1405 /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */
1406 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1407 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1408
1409 /* AES is our preferred symmetric cipher */
1410 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1411
1412 /* Temporarily enable everything else for sorting */
1413 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1414
1415 /* Low priority for MD5 */
1416 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail);
1417
1418 /* Move anonymous ciphers to the end. Usually, these will remain disabled.
1419 * (For applications that allow them, they aren't too bad, but we prefer
1420 * authenticated ciphers.) */
1421 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1422
1423 /* Move ciphers without forward secrecy to the end */
1424 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1425 /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */
1426 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1427 ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1428 ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1429
1430 /* RC4 is sort-of broken -- move the the end */
1431 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1432
1433 /* Now sort by symmetric encryption strength. The above ordering remains
1434 * in force within each class */
1435 if (!ssl_cipher_strength_sort(&head, &tail))
1436 {
1437 OPENSSL_free(co_list);
1438 return NULL;
1439 }
1440
1441 /* Now disable everything (maintaining the ordering!) */
1442 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1443
1444
1445 /*
1446 * We also need cipher aliases for selecting based on the rule_str.
1447 * There might be two types of entries in the rule_str: 1) names
1448 * of ciphers themselves 2) aliases for groups of ciphers.
1449 * For 1) we need the available ciphers and for 2) the cipher
1450 * groups of cipher_aliases added together in one list (otherwise
1451 * we would be happy with just the cipher_aliases table).
1452 */
1453 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
1454 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1455 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
1456 if (ca_list == NULL)
1457 {
1458 OPENSSL_free(co_list);
1459 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1460 return(NULL); /* Failure */
1461 }
1462 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1463 disabled_mkey, disabled_auth, disabled_enc,
1464 disabled_mac, disabled_ssl, head);
1465
1466 /*
1467 * If the rule_string begins with DEFAULT, apply the default rule
1468 * before using the (possibly available) additional rules.
1469 */
1470 ok = 1;
1471 rule_p = rule_str;
1472 if (strncmp(rule_str,"DEFAULT",7) == 0)
1473 {
1474 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1475 &head, &tail, ca_list);
1476 rule_p += 7;
1477 if (*rule_p == ':')
1478 rule_p++;
1479 }
1480
1481 if (ok && (strlen(rule_p) > 0))
1482 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list);
1483
1484 OPENSSL_free((void *)ca_list); /* Not needed anymore */
1485
1486 if (!ok)
1487 { /* Rule processing failure */
1488 OPENSSL_free(co_list);
1489 return(NULL);
1490 }
1491
1492 /*
1493 * Allocate new "cipherstack" for the result, return with error
1494 * if we cannot get one.
1495 */
1496 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL)
1497 {
1498 OPENSSL_free(co_list);
1499 return(NULL);
1500 }
1501
1502 /*
1503 * The cipher selection for the list is done. The ciphers are added
1504 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1505 */
1506 for (curr = head; curr != NULL; curr = curr->next)
1507 {
1508 #ifdef OPENSSL_FIPS
1509 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS))
1510 #else
1511 if (curr->active)
1512 #endif
1513 {
1514 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1515 #ifdef CIPHER_DEBUG
1516 printf("<%s>\n",curr->cipher->name);
1517 #endif
1518 }
1519 }
1520 OPENSSL_free(co_list); /* Not needed any longer */
1521
1522 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1523 if (tmp_cipher_list == NULL)
1524 {
1525 sk_SSL_CIPHER_free(cipherstack);
1526 return NULL;
1527 }
1528 if (*cipher_list != NULL)
1529 sk_SSL_CIPHER_free(*cipher_list);
1530 *cipher_list = cipherstack;
1531 if (*cipher_list_by_id != NULL)
1532 sk_SSL_CIPHER_free(*cipher_list_by_id);
1533 *cipher_list_by_id = tmp_cipher_list;
1534 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
1535
1536 sk_SSL_CIPHER_sort(*cipher_list_by_id);
1537 return(cipherstack);
1538 }
1539
1540 char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
1541 {
1542 int is_export,pkl,kl;
1543 const char *ver,*exp_str;
1544 const char *kx,*au,*enc,*mac;
1545 unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2;
1546 #ifdef KSSL_DEBUG
1547 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n";
1548 #else
1549 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1550 #endif /* KSSL_DEBUG */
1551
1552 alg_mkey = cipher->algorithm_mkey;
1553 alg_auth = cipher->algorithm_auth;
1554 alg_enc = cipher->algorithm_enc;
1555 alg_mac = cipher->algorithm_mac;
1556 alg_ssl = cipher->algorithm_ssl;
1557
1558 alg2=cipher->algorithm2;
1559
1560 is_export=SSL_C_IS_EXPORT(cipher);
1561 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1562 kl=SSL_C_EXPORT_KEYLENGTH(cipher);
1563 exp_str=is_export?" export":"";
1564
1565 if (alg_ssl & SSL_SSLV2)
1566 ver="SSLv2";
1567 else if (alg_ssl & SSL_SSLV3)
1568 ver="SSLv3";
1569 else if (alg_ssl & SSL_TLSV1_2)
1570 ver="TLSv1.2";
1571 else
1572 ver="unknown";
1573
1574 switch (alg_mkey)
1575 {
1576 case SSL_kRSA:
1577 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1578 break;
1579 case SSL_kDHr:
1580 kx="DH/RSA";
1581 break;
1582 case SSL_kDHd:
1583 kx="DH/DSS";
1584 break;
1585 case SSL_kKRB5:
1586 kx="KRB5";
1587 break;
1588 case SSL_kEDH:
1589 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1590 break;
1591 case SSL_kECDHr:
1592 kx="ECDH/RSA";
1593 break;
1594 case SSL_kECDHe:
1595 kx="ECDH/ECDSA";
1596 break;
1597 case SSL_kEECDH:
1598 kx="ECDH";
1599 break;
1600 case SSL_kPSK:
1601 kx="PSK";
1602 break;
1603 case SSL_kSRP:
1604 kx="SRP";
1605 break;
1606 case SSL_kGOST:
1607 kx="GOST";
1608 break;
1609 default:
1610 kx="unknown";
1611 }
1612
1613 switch (alg_auth)
1614 {
1615 case SSL_aRSA:
1616 au="RSA";
1617 break;
1618 case SSL_aDSS:
1619 au="DSS";
1620 break;
1621 case SSL_aDH:
1622 au="DH";
1623 break;
1624 case SSL_aKRB5:
1625 au="KRB5";
1626 break;
1627 case SSL_aECDH:
1628 au="ECDH";
1629 break;
1630 case SSL_aNULL:
1631 au="None";
1632 break;
1633 case SSL_aECDSA:
1634 au="ECDSA";
1635 break;
1636 case SSL_aPSK:
1637 au="PSK";
1638 break;
1639 case SSL_aSRP:
1640 au="SRP";
1641 break;
1642 case SSL_aGOST94:
1643 au="GOST94";
1644 break;
1645 case SSL_aGOST01:
1646 au="GOST01";
1647 break;
1648 default:
1649 au="unknown";
1650 break;
1651 }
1652
1653 switch (alg_enc)
1654 {
1655 case SSL_DES:
1656 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
1657 break;
1658 case SSL_3DES:
1659 enc="3DES(168)";
1660 break;
1661 case SSL_RC4:
1662 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1663 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1664 break;
1665 case SSL_RC2:
1666 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1667 break;
1668 case SSL_IDEA:
1669 enc="IDEA(128)";
1670 break;
1671 case SSL_eNULL:
1672 enc="None";
1673 break;
1674 case SSL_AES128:
1675 enc="AES(128)";
1676 break;
1677 case SSL_AES256:
1678 enc="AES(256)";
1679 break;
1680 case SSL_AES128GCM:
1681 enc="AESGCM(128)";
1682 break;
1683 case SSL_AES256GCM:
1684 enc="AESGCM(256)";
1685 break;
1686 case SSL_CAMELLIA128:
1687 enc="Camellia(128)";
1688 break;
1689 case SSL_CAMELLIA256:
1690 enc="Camellia(256)";
1691 break;
1692 case SSL_SEED:
1693 enc="SEED(128)";
1694 break;
1695 case SSL_eGOST2814789CNT:
1696 enc="GOST89(256)";
1697 break;
1698 default:
1699 enc="unknown";
1700 break;
1701 }
1702
1703 switch (alg_mac)
1704 {
1705 case SSL_MD5:
1706 mac="MD5";
1707 break;
1708 case SSL_SHA1:
1709 mac="SHA1";
1710 break;
1711 case SSL_SHA256:
1712 mac="SHA256";
1713 break;
1714 case SSL_SHA384:
1715 mac="SHA384";
1716 break;
1717 case SSL_AEAD:
1718 mac="AEAD";
1719 break;
1720 case SSL_GOST89MAC:
1721 mac="GOST89";
1722 break;
1723 case SSL_GOST94:
1724 mac="GOST94";
1725 break;
1726 default:
1727 mac="unknown";
1728 break;
1729 }
1730
1731 if (buf == NULL)
1732 {
1733 len=128;
1734 buf=OPENSSL_malloc(len);
1735 if (buf == NULL) return("OPENSSL_malloc Error");
1736 }
1737 else if (len < 128)
1738 return("Buffer too small");
1739
1740 #ifdef KSSL_DEBUG
1741 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl);
1742 #else
1743 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str);
1744 #endif /* KSSL_DEBUG */
1745 return(buf);
1746 }
1747
1748 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1749 {
1750 int i;
1751
1752 if (c == NULL) return("(NONE)");
1753 i=(int)(c->id>>24L);
1754 if (i == 3)
1755 return("TLSv1/SSLv3");
1756 else if (i == 2)
1757 return("SSLv2");
1758 else
1759 return("unknown");
1760 }
1761
1762 /* return the actual cipher being used */
1763 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1764 {
1765 if (c != NULL)
1766 return(c->name);
1767 return("(NONE)");
1768 }
1769
1770 /* number of bits for symmetric cipher */
1771 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1772 {
1773 int ret=0;
1774
1775 if (c != NULL)
1776 {
1777 if (alg_bits != NULL) *alg_bits = c->alg_bits;
1778 ret = c->strength_bits;
1779 }
1780 return(ret);
1781 }
1782
1783 unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c)
1784 {
1785 return c->id;
1786 }
1787
1788 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1789 {
1790 SSL_COMP *ctmp;
1791 int i,nn;
1792
1793 if ((n == 0) || (sk == NULL)) return(NULL);
1794 nn=sk_SSL_COMP_num(sk);
1795 for (i=0; i<nn; i++)
1796 {
1797 ctmp=sk_SSL_COMP_value(sk,i);
1798 if (ctmp->id == n)
1799 return(ctmp);
1800 }
1801 return(NULL);
1802 }
1803
1804 #ifdef OPENSSL_NO_COMP
1805 void *SSL_COMP_get_compression_methods(void)
1806 {
1807 return NULL;
1808 }
1809 int SSL_COMP_add_compression_method(int id, void *cm)
1810 {
1811 return 1;
1812 }
1813
1814 const char *SSL_COMP_get_name(const void *comp)
1815 {
1816 return NULL;
1817 }
1818 #else
1819 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1820 {
1821 load_builtin_compressions();
1822 return(ssl_comp_methods);
1823 }
1824
1825 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1826 {
1827 SSL_COMP *comp;
1828
1829 if (cm == NULL || cm->type == NID_undef)
1830 return 1;
1831
1832 /* According to draft-ietf-tls-compression-04.txt, the
1833 compression number ranges should be the following:
1834
1835 0 to 63: methods defined by the IETF
1836 64 to 192: external party methods assigned by IANA
1837 193 to 255: reserved for private use */
1838 if (id < 193 || id > 255)
1839 {
1840 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1841 return 0;
1842 }
1843
1844 MemCheck_off();
1845 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1846 comp->id=id;
1847 comp->method=cm;
1848 load_builtin_compressions();
1849 if (ssl_comp_methods
1850 && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0)
1851 {
1852 OPENSSL_free(comp);
1853 MemCheck_on();
1854 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID);
1855 return(1);
1856 }
1857 else if ((ssl_comp_methods == NULL)
1858 || !sk_SSL_COMP_push(ssl_comp_methods,comp))
1859 {
1860 OPENSSL_free(comp);
1861 MemCheck_on();
1862 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
1863 return(1);
1864 }
1865 else
1866 {
1867 MemCheck_on();
1868 return(0);
1869 }
1870 }
1871
1872 const char *SSL_COMP_get_name(const COMP_METHOD *comp)
1873 {
1874 if (comp)
1875 return comp->name;
1876 return NULL;
1877 }
1878
1879 #endif