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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
170static 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
178static 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
190static 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 */
197static 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
202static int ssl_mac_secret_size[SSL_MD_NUM_IDX] = {
203 0, 0, 0, 0, 0, 0
204};
205
206static 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
218typedef struct cipher_order_st {
219 const SSL_CIPHER *cipher;
220 int active;
221 int dead;
222 struct cipher_order_st *next, *prev;
223} CIPHER_ORDER;
224
225static const SSL_CIPHER cipher_aliases[] = {
226 /* "ALL" doesn't include eNULL (must be specifically enabled) */
227 {0, SSL_TXT_ALL, 0, 0, 0,~SSL_eNULL, 0, 0, 0, 0, 0, 0},
228 /* "COMPLEMENTOFALL" */
229 {0, SSL_TXT_CMPALL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
230
231 /* "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in ALL!) */
232 {0, SSL_TXT_CMPDEF, 0, SSL_kEDH|SSL_kEECDH, SSL_aNULL,~SSL_eNULL, 0, 0, 0, 0, 0, 0},
233
234 /* key exchange aliases
235 * (some of those using only a single bit here combine
236 * multiple key exchange algs according to the RFCs,
237 * e.g. kEDH combines DHE_DSS and DHE_RSA) */
238 {0, SSL_TXT_kRSA, 0, SSL_kRSA, 0, 0, 0, 0, 0, 0, 0, 0},
239
240 {0,SSL_TXT_kDHr,0, SSL_kDHr, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
241 {0,SSL_TXT_kDHd,0, SSL_kDHd, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
242 {0,SSL_TXT_kDH,0, SSL_kDHr|SSL_kDHd,0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
243 {0, SSL_TXT_kEDH, 0, SSL_kEDH, 0, 0, 0, 0, 0, 0, 0, 0},
244 {0, SSL_TXT_DH, 0, SSL_kDHr|SSL_kDHd|SSL_kEDH, 0, 0, 0, 0, 0, 0, 0, 0},
245
246 {0, SSL_TXT_kKRB5, 0, SSL_kKRB5, 0, 0, 0, 0, 0, 0, 0, 0},
247
248 {0, SSL_TXT_kECDHr, 0, SSL_kECDHr, 0, 0, 0, 0, 0, 0, 0, 0},
249 {0, SSL_TXT_kECDHe, 0, SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0},
250 {0, SSL_TXT_kECDH, 0, SSL_kECDHr|SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0},
251 {0, SSL_TXT_kEECDH, 0, SSL_kEECDH, 0, 0, 0, 0, 0, 0, 0, 0},
252 {0, SSL_TXT_ECDH, 0, SSL_kECDHr|SSL_kECDHe|SSL_kEECDH, 0, 0, 0, 0, 0, 0, 0, 0},
253
254 {0, SSL_TXT_kPSK, 0, SSL_kPSK, 0, 0, 0, 0, 0, 0, 0, 0},
255 {0, SSL_TXT_kSRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
256 {0, SSL_TXT_kGOST, 0, SSL_kGOST, 0, 0, 0, 0, 0, 0, 0, 0},
257
258 /* server authentication aliases */
259 {0, SSL_TXT_aRSA, 0, 0, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
260 {0, SSL_TXT_aDSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
261 {0, SSL_TXT_DSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0},
262 {0, SSL_TXT_aKRB5, 0, 0, SSL_aKRB5, 0, 0, 0, 0, 0, 0, 0},
263 {0, SSL_TXT_aNULL, 0, 0, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
264 {0,SSL_TXT_aDH,0, 0,SSL_aDH, 0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
265 {0, SSL_TXT_aECDH, 0, 0, SSL_aECDH, 0, 0, 0, 0, 0, 0, 0},
266 {0, SSL_TXT_aECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
267 {0, SSL_TXT_ECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0},
268 {0, SSL_TXT_aPSK, 0, 0, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0},
269 {0, SSL_TXT_aGOST94, 0, 0, SSL_aGOST94, 0, 0, 0, 0, 0, 0, 0},
270 {0, SSL_TXT_aGOST01, 0, 0, SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0},
271 {0, SSL_TXT_aGOST, 0, 0, SSL_aGOST94|SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0},
272
273 /* aliases combining key exchange and server authentication */
274 {0, SSL_TXT_EDH, 0, SSL_kEDH,~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
275 {0, SSL_TXT_EECDH, 0, SSL_kEECDH,~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
276 {0, SSL_TXT_NULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
277 {0, SSL_TXT_KRB5, 0, SSL_kKRB5, SSL_aKRB5, 0, 0, 0, 0, 0, 0, 0},
278 {0, SSL_TXT_RSA, 0, SSL_kRSA, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0},
279 {0, SSL_TXT_ADH, 0, SSL_kEDH, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
280 {0, SSL_TXT_AECDH, 0, SSL_kEECDH, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0},
281 {0, SSL_TXT_PSK, 0, SSL_kPSK, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0},
282 {0, SSL_TXT_SRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0},
283
284
285 /* symmetric encryption aliases */
286 {0, SSL_TXT_DES, 0, 0, 0, SSL_DES, 0, 0, 0, 0, 0, 0},
287 {0, SSL_TXT_3DES, 0, 0, 0, SSL_3DES, 0, 0, 0, 0, 0, 0},
288 {0, SSL_TXT_RC4, 0, 0, 0, SSL_RC4, 0, 0, 0, 0, 0, 0},
289 {0, SSL_TXT_RC2, 0, 0, 0, SSL_RC2, 0, 0, 0, 0, 0, 0},
290 {0, SSL_TXT_IDEA, 0, 0, 0, SSL_IDEA, 0, 0, 0, 0, 0, 0},
291 {0, SSL_TXT_SEED, 0, 0, 0, SSL_SEED, 0, 0, 0, 0, 0, 0},
292 {0, SSL_TXT_eNULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
293 {0, SSL_TXT_AES128, 0, 0, 0, SSL_AES128|SSL_AES128GCM, 0, 0, 0, 0, 0, 0},
294 {0, SSL_TXT_AES256, 0, 0, 0, SSL_AES256|SSL_AES256GCM, 0, 0, 0, 0, 0, 0},
295 {0, SSL_TXT_AES, 0, 0, 0, SSL_AES, 0, 0, 0, 0, 0, 0},
296 {0, SSL_TXT_AES_GCM, 0, 0, 0, SSL_AES128GCM|SSL_AES256GCM, 0, 0, 0, 0, 0, 0},
297 {0, SSL_TXT_CAMELLIA128, 0, 0, 0, SSL_CAMELLIA128, 0, 0, 0, 0, 0, 0},
298 {0, SSL_TXT_CAMELLIA256, 0, 0, 0, SSL_CAMELLIA256, 0, 0, 0, 0, 0, 0},
299 {0, SSL_TXT_CAMELLIA , 0, 0, 0, SSL_CAMELLIA128|SSL_CAMELLIA256, 0, 0, 0, 0, 0, 0},
300
301 /* MAC aliases */
302 {0, SSL_TXT_MD5, 0, 0, 0, 0, SSL_MD5, 0, 0, 0, 0, 0},
303 {0, SSL_TXT_SHA1, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
304 {0, SSL_TXT_SHA, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0},
305 {0, SSL_TXT_GOST94, 0, 0, 0, 0, SSL_GOST94, 0, 0, 0, 0, 0},
306 {0, SSL_TXT_GOST89MAC, 0, 0, 0, 0, SSL_GOST89MAC, 0, 0, 0, 0, 0},
307 {0, SSL_TXT_SHA256, 0, 0, 0, 0, SSL_SHA256, 0, 0, 0, 0, 0},
308 {0, SSL_TXT_SHA384, 0, 0, 0, 0, SSL_SHA384, 0, 0, 0, 0, 0},
309
310 /* protocol version aliases */
311 {0, SSL_TXT_SSLV2, 0, 0, 0, 0, 0, SSL_SSLV2, 0, 0, 0, 0},
312 {0, SSL_TXT_SSLV3, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0},
313 {0, SSL_TXT_TLSV1, 0, 0, 0, 0, 0, SSL_TLSV1, 0, 0, 0, 0},
314 {0, SSL_TXT_TLSV1_2, 0, 0, 0, 0, 0, SSL_TLSV1_2, 0, 0, 0, 0},
315
316 /* export flag */
317 {0, SSL_TXT_EXP, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0},
318 {0, SSL_TXT_EXPORT, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0},
319
320 /* strength classes */
321 {0, SSL_TXT_EXP40, 0, 0, 0, 0, 0, 0, SSL_EXP40, 0, 0, 0},
322 {0, SSL_TXT_EXP56, 0, 0, 0, 0, 0, 0, SSL_EXP56, 0, 0, 0},
323 {0, SSL_TXT_LOW, 0, 0, 0, 0, 0, 0, SSL_LOW, 0, 0, 0},
324 {0, SSL_TXT_MEDIUM, 0, 0, 0, 0, 0, 0, SSL_MEDIUM, 0, 0, 0},
325 {0, SSL_TXT_HIGH, 0, 0, 0, 0, 0, 0, SSL_HIGH, 0, 0, 0},
326 /* FIPS 140-2 approved ciphersuite */
327 {0, SSL_TXT_FIPS, 0, 0, 0,~SSL_eNULL, 0, 0, SSL_FIPS, 0, 0, 0},
328};
329/* Search for public key algorithm with given name and
330 * return its pkey_id if it is available. Otherwise return 0
331 */
332#ifdef OPENSSL_NO_ENGINE
333
334static int
335get_optional_pkey_id(const char *pkey_name)
336{
337 const EVP_PKEY_ASN1_METHOD *ameth;
338 int pkey_id = 0;
339 ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1);
340 if (ameth) {
341 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
342 }
343 return pkey_id;
344}
345
346#else
347
348static int
349get_optional_pkey_id(const char *pkey_name)
350{
351 const EVP_PKEY_ASN1_METHOD *ameth;
352 ENGINE *tmpeng = NULL;
353 int pkey_id = 0;
354 ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1);
355 if (ameth) {
356 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
357 }
358 if (tmpeng)
359 ENGINE_finish(tmpeng);
360 return pkey_id;
361}
362
363#endif
364
365void
366ssl_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 ssl_mac_secret_size[SSL_MD_GOST94_IDX]=
414 EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]);
415 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0);
416 }
417 ssl_digest_methods[SSL_MD_GOST89MAC_IDX]=
418 EVP_get_digestbyname(SN_id_Gost28147_89_MAC);
419 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac");
420 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) {
421 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32;
422 }
423
424 ssl_digest_methods[SSL_MD_SHA256_IDX]=
425 EVP_get_digestbyname(SN_sha256);
426 ssl_mac_secret_size[SSL_MD_SHA256_IDX]=
427 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]);
428 ssl_digest_methods[SSL_MD_SHA384_IDX]=
429 EVP_get_digestbyname(SN_sha384);
430 ssl_mac_secret_size[SSL_MD_SHA384_IDX]=
431 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]);
432}
433#ifndef OPENSSL_NO_COMP
434
435static int
436sk_comp_cmp(const SSL_COMP * const *a,
437 const SSL_COMP * const *b)
438{
439 return ((*a)->id - (*b)->id);
440}
441
442static void
443load_builtin_compressions(void)
444{
445 int got_write_lock = 0;
446
447 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
448 if (ssl_comp_methods == NULL) {
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 SSL_COMP *comp = NULL;
455
456 MemCheck_off();
457 ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp);
458 if (ssl_comp_methods != NULL) {
459 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
460 if (comp != NULL) {
461 comp->method = COMP_zlib();
462 if (comp->method
463 && comp->method->type == NID_undef)
464 OPENSSL_free(comp);
465 else {
466 comp->id = SSL_COMP_ZLIB_IDX;
467 comp->name = comp->method->name;
468 sk_SSL_COMP_push(ssl_comp_methods, comp);
469 }
470 }
471 sk_SSL_COMP_sort(ssl_comp_methods);
472 }
473 MemCheck_on();
474 }
475 }
476
477 if (got_write_lock)
478 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
479 else
480 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
481}
482#endif
483
484int
485ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
486 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size, SSL_COMP **comp)
487{
488 int i;
489 const SSL_CIPHER *c;
490
491 c = s->cipher;
492 if (c == NULL)
493 return (0);
494 if (comp != NULL) {
495 SSL_COMP ctmp;
496#ifndef OPENSSL_NO_COMP
497 load_builtin_compressions();
498#endif
499
500 *comp = NULL;
501 ctmp.id = s->compress_meth;
502 if (ssl_comp_methods != NULL) {
503 i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp);
504 if (i >= 0)
505 *comp = sk_SSL_COMP_value(ssl_comp_methods, i);
506 else
507 *comp = NULL;
508 }
509 }
510
511 if ((enc == NULL)
512 || (md == NULL)) return (0);
513
514 switch (c->algorithm_enc) {
515 case SSL_DES:
516 i = SSL_ENC_DES_IDX;
517 break;
518 case SSL_3DES:
519 i = SSL_ENC_3DES_IDX;
520 break;
521 case SSL_RC4:
522 i = SSL_ENC_RC4_IDX;
523 break;
524 case SSL_RC2:
525 i = SSL_ENC_RC2_IDX;
526 break;
527 case SSL_IDEA:
528 i = SSL_ENC_IDEA_IDX;
529 break;
530 case SSL_eNULL:
531 i = SSL_ENC_NULL_IDX;
532 break;
533 case SSL_AES128:
534 i = SSL_ENC_AES128_IDX;
535 break;
536 case SSL_AES256:
537 i = SSL_ENC_AES256_IDX;
538 break;
539 case SSL_CAMELLIA128:
540 i = SSL_ENC_CAMELLIA128_IDX;
541 break;
542 case SSL_CAMELLIA256:
543 i = SSL_ENC_CAMELLIA256_IDX;
544 break;
545 case SSL_eGOST2814789CNT:
546 i = SSL_ENC_GOST89_IDX;
547 break;
548 case SSL_SEED:
549 i = SSL_ENC_SEED_IDX;
550 break;
551 case SSL_AES128GCM:
552 i = SSL_ENC_AES128GCM_IDX;
553 break;
554 case SSL_AES256GCM:
555 i = SSL_ENC_AES256GCM_IDX;
556 break;
557 default:
558 i = -1;
559 break;
560 }
561
562 if ((i < 0) || (i > SSL_ENC_NUM_IDX))
563 *enc = NULL;
564 else {
565 if (i == SSL_ENC_NULL_IDX)
566 *enc = EVP_enc_null();
567 else
568 *enc = ssl_cipher_methods[i];
569 }
570
571 switch (c->algorithm_mac) {
572 case SSL_MD5:
573 i = SSL_MD_MD5_IDX;
574 break;
575 case SSL_SHA1:
576 i = SSL_MD_SHA1_IDX;
577 break;
578 case SSL_SHA256:
579 i = SSL_MD_SHA256_IDX;
580 break;
581 case SSL_SHA384:
582 i = SSL_MD_SHA384_IDX;
583 break;
584 case SSL_GOST94:
585 i = SSL_MD_GOST94_IDX;
586 break;
587 case SSL_GOST89MAC:
588 i = SSL_MD_GOST89MAC_IDX;
589 break;
590 default:
591 i = -1;
592 break;
593 }
594 if ((i < 0) || (i > SSL_MD_NUM_IDX)) {
595 *md = NULL;
596
597 if (mac_pkey_type != NULL)
598 *mac_pkey_type = NID_undef;
599 if (mac_secret_size != NULL)
600 *mac_secret_size = 0;
601 if (c->algorithm_mac == SSL_AEAD)
602 mac_pkey_type = NULL;
603 } else {
604 *md = ssl_digest_methods[i];
605 if (mac_pkey_type != NULL)
606 *mac_pkey_type = ssl_mac_pkey_id[i];
607 if (mac_secret_size != NULL)
608 *mac_secret_size = ssl_mac_secret_size[i];
609 }
610
611 if ((*enc != NULL) &&
612 (*md != NULL || (EVP_CIPHER_flags(*enc)&EVP_CIPH_FLAG_AEAD_CIPHER)) &&
613 (!mac_pkey_type || *mac_pkey_type != NID_undef)) {
614 const EVP_CIPHER *evp;
615
616 if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR ||
617 s->ssl_version < TLS1_VERSION)
618 return 1;
619
620#ifdef OPENSSL_FIPS
621 if (FIPS_mode())
622 return 1;
623#endif
624
625 if (c->algorithm_enc == SSL_RC4 &&
626 c->algorithm_mac == SSL_MD5 &&
627 (evp = EVP_get_cipherbyname("RC4-HMAC-MD5")))
628 *enc = evp, *md = NULL;
629 else if (c->algorithm_enc == SSL_AES128 &&
630 c->algorithm_mac == SSL_SHA1 &&
631 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
632 *enc = evp, *md = NULL;
633 else if (c->algorithm_enc == SSL_AES256 &&
634 c->algorithm_mac == SSL_SHA1 &&
635 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
636 *enc = evp, *md = NULL;
637 return (1);
638 } else
639 return (0);
640}
641
642int
643ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md)
644{
645 if (idx < 0 || idx >= SSL_MD_NUM_IDX) {
646 return 0;
647 }
648 *mask = ssl_handshake_digest_flag[idx];
649 if (*mask)
650 *md = ssl_digest_methods[idx];
651 else
652 *md = NULL;
653 return 1;
654}
655
656#define ITEM_SEP(a) \
657 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
658
659static void
660ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
661 CIPHER_ORDER **tail)
662{
663 if (curr == *tail)
664 return;
665 if (curr == *head)
666 *head = curr->next;
667 if (curr->prev != NULL)
668 curr->prev->next = curr->next;
669 if (curr->next != NULL)
670 curr->next->prev = curr->prev;
671 (*tail)->next = curr;
672 curr->prev= *tail;
673 curr->next = NULL;
674 *tail = curr;
675}
676
677static void
678ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
679 CIPHER_ORDER **tail)
680{
681 if (curr == *head)
682 return;
683 if (curr == *tail)
684 *tail = curr->prev;
685 if (curr->next != NULL)
686 curr->next->prev = curr->prev;
687 if (curr->prev != NULL)
688 curr->prev->next = curr->next;
689 (*head)->prev = curr;
690 curr->next= *head;
691 curr->prev = NULL;
692 *head = curr;
693}
694
695static void
696ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl)
697{
698 *mkey = 0;
699 *auth = 0;
700 *enc = 0;
701 *mac = 0;
702 *ssl = 0;
703
704#ifdef OPENSSL_NO_RSA
705 *mkey |= SSL_kRSA;
706 *auth |= SSL_aRSA;
707#endif
708#ifdef OPENSSL_NO_DSA
709 *auth |= SSL_aDSS;
710#endif
711 *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */
712 *auth |= SSL_aDH;
713#ifdef OPENSSL_NO_DH
714 *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH;
715 *auth |= SSL_aDH;
716#endif
717#ifdef OPENSSL_NO_KRB5
718 *mkey |= SSL_kKRB5;
719 *auth |= SSL_aKRB5;
720#endif
721#ifdef OPENSSL_NO_ECDSA
722 *auth |= SSL_aECDSA;
723#endif
724#ifdef OPENSSL_NO_ECDH
725 *mkey |= SSL_kECDHe|SSL_kECDHr;
726 *auth |= SSL_aECDH;
727#endif
728#ifdef OPENSSL_NO_PSK
729 *mkey |= SSL_kPSK;
730 *auth |= SSL_aPSK;
731#endif
732#ifdef OPENSSL_NO_SRP
733 *mkey |= SSL_kSRP;
734#endif
735 /* Check for presence of GOST 34.10 algorithms, and if they
736 * do not present, disable appropriate auth and key exchange */
737 if (!get_optional_pkey_id("gost94")) {
738 *auth |= SSL_aGOST94;
739 }
740 if (!get_optional_pkey_id("gost2001")) {
741 *auth |= SSL_aGOST01;
742 }
743 /* Disable GOST key exchange if no GOST signature algs are available * */
744 if ((*auth & (SSL_aGOST94|SSL_aGOST01)) == (SSL_aGOST94|SSL_aGOST01)) {
745 *mkey |= SSL_kGOST;
746 }
747#ifdef SSL_FORBID_ENULL
748 *enc |= SSL_eNULL;
749#endif
750
751
752
753 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES : 0;
754 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES : 0;
755 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 : 0;
756 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 : 0;
757 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA : 0;
758 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128 : 0;
759 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256 : 0;
760 *enc |= (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] == NULL) ? SSL_AES128GCM : 0;
761 *enc |= (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] == NULL) ? SSL_AES256GCM : 0;
762 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128 : 0;
763 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256 : 0;
764 *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT : 0;
765 *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED : 0;
766
767 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 : 0;
768 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1 : 0;
769 *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256 : 0;
770 *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384 : 0;
771 *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94 : 0;
772 *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef) ? SSL_GOST89MAC : 0;
773
774}
775
776static void
777ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
778 int num_of_ciphers,
779unsigned long disabled_mkey, unsigned long disabled_auth,
780 unsigned long disabled_enc, unsigned long disabled_mac,
781unsigned long disabled_ssl,
782 CIPHER_ORDER *co_list,
783CIPHER_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 c = ssl_method->get_cipher(i);
799 /* drop those that use any of that is not available */
800 if ((c != NULL) && c->valid &&
801#ifdef OPENSSL_FIPS
802 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) &&
803#endif
804 !(c->algorithm_mkey & disabled_mkey) &&
805 !(c->algorithm_auth & disabled_auth) &&
806 !(c->algorithm_enc & disabled_enc) &&
807 !(c->algorithm_mac & disabled_mac) &&
808 !(c->algorithm_ssl & disabled_ssl)) {
809 co_list[co_list_num].cipher = c;
810 co_list[co_list_num].next = NULL;
811 co_list[co_list_num].prev = NULL;
812 co_list[co_list_num].active = 0;
813 co_list_num++;
814#ifdef KSSL_DEBUG
815 printf("\t%d: %s %lx %lx %lx\n", i, c->name, c->id, c->algorithm_mkey, c->algorithm_auth);
816#endif /* KSSL_DEBUG */
817 /*
818 if (!sk_push(ca_list,(char *)c)) goto err;
819 */
820 }
821 }
822
823 /*
824 * Prepare linked list from list entries
825 */
826 if (co_list_num > 0) {
827 co_list[0].prev = NULL;
828
829 if (co_list_num > 1) {
830 co_list[0].next = &co_list[1];
831
832 for (i = 1; i < co_list_num - 1; i++) {
833 co_list[i].prev = &co_list[i - 1];
834 co_list[i].next = &co_list[i + 1];
835 }
836
837 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
838 }
839
840 co_list[co_list_num - 1].next = NULL;
841
842 *head_p = &co_list[0];
843 *tail_p = &co_list[co_list_num - 1];
844 }
845}
846
847static void
848ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list,
849 int num_of_group_aliases,
850unsigned long disabled_mkey, unsigned long disabled_auth,
851 unsigned long disabled_enc, unsigned long disabled_mac,
852unsigned long disabled_ssl,
853 CIPHER_ORDER *head)
854{
855 CIPHER_ORDER *ciph_curr;
856 const SSL_CIPHER **ca_curr;
857 int i;
858 unsigned long mask_mkey = ~disabled_mkey;
859 unsigned long mask_auth = ~disabled_auth;
860 unsigned long mask_enc = ~disabled_enc;
861 unsigned long mask_mac = ~disabled_mac;
862 unsigned long mask_ssl = ~disabled_ssl;
863
864 /*
865 * First, add the real ciphers as already collected
866 */
867 ciph_curr = head;
868 ca_curr = ca_list;
869 while (ciph_curr != NULL) {
870 *ca_curr = ciph_curr->cipher;
871 ca_curr++;
872 ciph_curr = ciph_curr->next;
873 }
874
875 /*
876 * Now we add the available ones from the cipher_aliases[] table.
877 * They represent either one or more algorithms, some of which
878 * in any affected category must be supported (set in enabled_mask),
879 * or represent a cipher strength value (will be added in any case because algorithms=0).
880 */
881 for (i = 0; i < num_of_group_aliases; i++) {
882 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey;
883 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth;
884 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc;
885 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac;
886 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl;
887
888 if (algorithm_mkey)
889 if ((algorithm_mkey & mask_mkey) == 0)
890 continue;
891
892 if (algorithm_auth)
893 if ((algorithm_auth & mask_auth) == 0)
894 continue;
895
896 if (algorithm_enc)
897 if ((algorithm_enc & mask_enc) == 0)
898 continue;
899
900 if (algorithm_mac)
901 if ((algorithm_mac & mask_mac) == 0)
902 continue;
903
904 if (algorithm_ssl)
905 if ((algorithm_ssl & mask_ssl) == 0)
906 continue;
907
908 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
909 ca_curr++;
910 }
911
912 *ca_curr = NULL; /* end of list */
913}
914
915static void
916ssl_cipher_apply_rule(unsigned long cipher_id,
917 unsigned long alg_mkey, unsigned long alg_auth,
918unsigned long alg_enc, unsigned long alg_mac,
919 unsigned long alg_ssl,
920unsigned long algo_strength,
921 int rule, int strength_bits,
922CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
923{
924 CIPHER_ORDER *head, *tail, *curr, *curr2, *last;
925 const SSL_CIPHER *cp;
926 int reverse = 0;
927
928#ifdef CIPHER_DEBUG
929 printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
930 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits);
931#endif
932
933 if (rule == CIPHER_DEL)
934 reverse = 1; /* needed to maintain sorting between currently deleted ciphers */
935
936 head = *head_p;
937 tail = *tail_p;
938
939 if (reverse) {
940 curr = tail;
941 last = head;
942 } else {
943 curr = head;
944 last = tail;
945 }
946
947 curr2 = curr;
948 for (;;) {
949 if ((curr == NULL)
950 || (curr == last)) break;
951 curr = curr2;
952 curr2 = reverse ? curr->prev : curr->next;
953
954 cp = curr->cipher;
955
956 /*
957 * Selection criteria is either the value of strength_bits
958 * or the algorithms used.
959 */
960 if (strength_bits >= 0) {
961 if (strength_bits != cp->strength_bits)
962 continue;
963 } else {
964#ifdef CIPHER_DEBUG
965 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);
966#endif
967
968 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
969 continue;
970 if (alg_auth && !(alg_auth & cp->algorithm_auth))
971 continue;
972 if (alg_enc && !(alg_enc & cp->algorithm_enc))
973 continue;
974 if (alg_mac && !(alg_mac & cp->algorithm_mac))
975 continue;
976 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
977 continue;
978 if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength))
979 continue;
980 if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength))
981 continue;
982 }
983
984#ifdef CIPHER_DEBUG
985 printf("Action = %d\n", rule);
986#endif
987
988 /* add the cipher if it has not been added yet. */
989 if (rule == CIPHER_ADD) {
990 /* reverse == 0 */
991 if (!curr->active) {
992 ll_append_tail(&head, curr, &tail);
993 curr->active = 1;
994 }
995 }
996 /* Move the added cipher to this location */
997 else if (rule == CIPHER_ORD) {
998 /* reverse == 0 */
999 if (curr->active) {
1000 ll_append_tail(&head, curr, &tail);
1001 }
1002 } else if (rule == CIPHER_DEL) {
1003 /* reverse == 1 */
1004 if (curr->active) {
1005 /* most recently deleted ciphersuites get best positions
1006 * for any future CIPHER_ADD (note that the CIPHER_DEL loop
1007 * works in reverse to maintain the order) */
1008 ll_append_head(&head, curr, &tail);
1009 curr->active = 0;
1010 }
1011 } else if (rule == CIPHER_KILL) {
1012 /* reverse == 0 */
1013 if (head == curr)
1014 head = curr->next;
1015 else
1016 curr->prev->next = curr->next;
1017 if (tail == curr)
1018 tail = curr->prev;
1019 curr->active = 0;
1020 if (curr->next != NULL)
1021 curr->next->prev = curr->prev;
1022 if (curr->prev != NULL)
1023 curr->prev->next = curr->next;
1024 curr->next = NULL;
1025 curr->prev = NULL;
1026 }
1027 }
1028
1029 *head_p = head;
1030 *tail_p = tail;
1031}
1032
1033static int
1034ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
1035 CIPHER_ORDER **tail_p)
1036{
1037 int max_strength_bits, i, *number_uses;
1038 CIPHER_ORDER *curr;
1039
1040 /*
1041 * This routine sorts the ciphers with descending strength. The sorting
1042 * must keep the pre-sorted sequence, so we apply the normal sorting
1043 * routine as '+' movement to the end of the list.
1044 */
1045 max_strength_bits = 0;
1046 curr = *head_p;
1047 while (curr != NULL) {
1048 if (curr->active &&
1049 (curr->cipher->strength_bits > max_strength_bits))
1050 max_strength_bits = curr->cipher->strength_bits;
1051 curr = curr->next;
1052 }
1053
1054 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
1055 if (!number_uses) {
1056 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE);
1057 return (0);
1058 }
1059 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
1060
1061 /*
1062 * Now find the strength_bits values actually used
1063 */
1064 curr = *head_p;
1065 while (curr != NULL) {
1066 if (curr->active)
1067 number_uses[curr->cipher->strength_bits]++;
1068 curr = curr->next;
1069 }
1070 /*
1071 * Go through the list of used strength_bits values in descending
1072 * order.
1073 */
1074 for (i = max_strength_bits; i >= 0; i--)
1075 if (number_uses[i] > 0)
1076 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p);
1077
1078 OPENSSL_free(number_uses);
1079 return (1);
1080}
1081
1082static int
1083ssl_cipher_process_rulestr(const char *rule_str,
1084 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p,
1085const SSL_CIPHER **ca_list)
1086{
1087 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength;
1088 const char *l, *buf;
1089 int j, multi, found, rule, retval, ok, buflen;
1090 unsigned long cipher_id = 0;
1091 char ch;
1092
1093 retval = 1;
1094 l = rule_str;
1095 for (;;) {
1096 ch = *l;
1097
1098 if (ch == '\0')
1099 break;
1100 /* done */
1101 if (ch == '-')
1102 { rule = CIPHER_DEL;
1103 l++;
1104 } else if (ch == '+')
1105 { rule = CIPHER_ORD;
1106 l++;
1107 } else if (ch == '!')
1108 { rule = CIPHER_KILL;
1109 l++;
1110 } else if (ch == '@')
1111 { rule = CIPHER_SPECIAL;
1112 l++;
1113 } else
1114 { rule = CIPHER_ADD;
1115 }
1116
1117 if (ITEM_SEP(ch)) {
1118 l++;
1119 continue;
1120 }
1121
1122 alg_mkey = 0;
1123 alg_auth = 0;
1124 alg_enc = 0;
1125 alg_mac = 0;
1126 alg_ssl = 0;
1127 algo_strength = 0;
1128
1129 for (;;) {
1130 ch = *l;
1131 buf = l;
1132 buflen = 0;
1133 while (((ch >= 'A') && (ch <= 'Z')) ||
1134 ((ch >= '0') && (ch <= '9')) ||
1135 ((ch >= 'a') && (ch <= 'z')) ||
1136 (ch == '-') || (ch == '.'))
1137 {
1138 ch = *(++l);
1139 buflen++;
1140 }
1141
1142 if (buflen == 0) {
1143 /*
1144 * We hit something we cannot deal with,
1145 * it is no command or separator nor
1146 * alphanumeric, so we call this an error.
1147 */
1148 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1149 SSL_R_INVALID_COMMAND);
1150 retval = found = 0;
1151 l++;
1152 break;
1153 }
1154
1155 if (rule == CIPHER_SPECIAL) {
1156 found = 0; /* unused -- avoid compiler warning */
1157 break; /* special treatment */
1158 }
1159
1160 /* check for multi-part specification */
1161 if (ch == '+') {
1162 multi = 1;
1163 l++;
1164 } else
1165 multi = 0;
1166
1167 /*
1168 * Now search for the cipher alias in the ca_list. Be careful
1169 * with the strncmp, because the "buflen" limitation
1170 * will make the rule "ADH:SOME" and the cipher
1171 * "ADH-MY-CIPHER" look like a match for buflen=3.
1172 * So additionally check whether the cipher name found
1173 * has the correct length. We can save a strlen() call:
1174 * just checking for the '\0' at the right place is
1175 * sufficient, we have to strncmp() anyway. (We cannot
1176 * use strcmp(), because buf is not '\0' terminated.)
1177 */
1178 j = found = 0;
1179 cipher_id = 0;
1180 while (ca_list[j]) {
1181 if (!strncmp(buf, ca_list[j]->name, buflen) &&
1182 (ca_list[j]->name[buflen] == '\0')) {
1183 found = 1;
1184 break;
1185 } else
1186 j++;
1187 }
1188
1189 if (!found)
1190 break; /* ignore this entry */
1191
1192 if (ca_list[j]->algorithm_mkey) {
1193 if (alg_mkey) {
1194 alg_mkey &= ca_list[j]->algorithm_mkey;
1195 if (!alg_mkey) {
1196 found = 0;
1197 break;
1198 }
1199 } else
1200 alg_mkey = ca_list[j]->algorithm_mkey;
1201 }
1202
1203 if (ca_list[j]->algorithm_auth) {
1204 if (alg_auth) {
1205 alg_auth &= ca_list[j]->algorithm_auth;
1206 if (!alg_auth) {
1207 found = 0;
1208 break;
1209 }
1210 } else
1211 alg_auth = ca_list[j]->algorithm_auth;
1212 }
1213
1214 if (ca_list[j]->algorithm_enc) {
1215 if (alg_enc) {
1216 alg_enc &= ca_list[j]->algorithm_enc;
1217 if (!alg_enc) {
1218 found = 0;
1219 break;
1220 }
1221 } else
1222 alg_enc = ca_list[j]->algorithm_enc;
1223 }
1224
1225 if (ca_list[j]->algorithm_mac) {
1226 if (alg_mac) {
1227 alg_mac &= ca_list[j]->algorithm_mac;
1228 if (!alg_mac) {
1229 found = 0;
1230 break;
1231 }
1232 } else
1233 alg_mac = ca_list[j]->algorithm_mac;
1234 }
1235
1236 if (ca_list[j]->algo_strength & SSL_EXP_MASK) {
1237 if (algo_strength & SSL_EXP_MASK) {
1238 algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK;
1239 if (!(algo_strength & SSL_EXP_MASK)) {
1240 found = 0;
1241 break;
1242 }
1243 } else
1244 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK;
1245 }
1246
1247 if (ca_list[j]->algo_strength & SSL_STRONG_MASK) {
1248 if (algo_strength & SSL_STRONG_MASK) {
1249 algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK;
1250 if (!(algo_strength & SSL_STRONG_MASK)) {
1251 found = 0;
1252 break;
1253 }
1254 } else
1255 algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK;
1256 }
1257
1258 if (ca_list[j]->valid) {
1259 /* explicit ciphersuite found; its protocol version
1260 * does not become part of the search pattern!*/
1261
1262 cipher_id = ca_list[j]->id;
1263 } else {
1264 /* not an explicit ciphersuite; only in this case, the
1265 * protocol version is considered part of the search pattern */
1266
1267 if (ca_list[j]->algorithm_ssl) {
1268 if (alg_ssl) {
1269 alg_ssl &= ca_list[j]->algorithm_ssl;
1270 if (!alg_ssl) {
1271 found = 0;
1272 break;
1273 }
1274 } else
1275 alg_ssl = ca_list[j]->algorithm_ssl;
1276 }
1277 }
1278
1279 if (!multi)
1280 break;
1281 }
1282
1283 /*
1284 * Ok, we have the rule, now apply it
1285 */
1286 if (rule == CIPHER_SPECIAL)
1287 { /* special command */
1288 ok = 0;
1289 if ((buflen == 8) &&
1290 !strncmp(buf, "STRENGTH", 8))
1291 ok = ssl_cipher_strength_sort(head_p, tail_p);
1292 else
1293 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1294 SSL_R_INVALID_COMMAND);
1295 if (ok == 0)
1296 retval = 0;
1297 /*
1298 * We do not support any "multi" options
1299 * together with "@", so throw away the
1300 * rest of the command, if any left, until
1301 * end or ':' is found.
1302 */
1303 while ((*l != '\0') && !ITEM_SEP(*l))
1304 l++;
1305 } else if (found) {
1306 ssl_cipher_apply_rule(cipher_id,
1307 alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength,
1308 rule, -1, head_p, tail_p);
1309 } else {
1310 while ((*l != '\0') && !ITEM_SEP(*l))
1311 l++;
1312 }
1313 if (*l == '\0') break; /* done */
1314 }
1315
1316 return (retval);
1317}
1318
1319STACK_OF(SSL_CIPHER)
1320*ssl_create_cipher_list(const SSL_METHOD *ssl_method,
1321STACK_OF(SSL_CIPHER) **cipher_list,
1322 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
1323const char *rule_str)
1324{
1325 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1326 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl;
1327 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1328 const char *rule_p;
1329 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1330 const SSL_CIPHER **ca_list = NULL;
1331
1332 /*
1333 * Return with error if nothing to do.
1334 */
1335 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1336 return NULL;
1337
1338 /*
1339 * To reduce the work to do we only want to process the compiled
1340 * in algorithms, so we first get the mask of disabled ciphers.
1341 */
1342 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl);
1343
1344 /*
1345 * Now we have to collect the available ciphers from the compiled
1346 * in ciphers. We cannot get more than the number compiled in, so
1347 * it is used for allocation.
1348 */
1349 num_of_ciphers = ssl_method->num_ciphers();
1350#ifdef KSSL_DEBUG
1351 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
1352#endif /* KSSL_DEBUG */
1353 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
1354 if (co_list == NULL) {
1355 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1356 return(NULL); /* Failure */
1357 }
1358
1359 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1360 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl,
1361 co_list, &head, &tail);
1362
1363
1364 /* Now arrange all ciphers by preference: */
1365
1366 /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */
1367 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1368 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1369
1370 /* AES is our preferred symmetric cipher */
1371 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1372
1373 /* Temporarily enable everything else for sorting */
1374 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1375
1376 /* Low priority for MD5 */
1377 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail);
1378
1379 /* Move anonymous ciphers to the end. Usually, these will remain disabled.
1380 * (For applications that allow them, they aren't too bad, but we prefer
1381 * authenticated ciphers.) */
1382 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1383
1384 /* Move ciphers without forward secrecy to the end */
1385 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1386 /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */
1387 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1388 ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1389 ssl_cipher_apply_rule(0, SSL_kKRB5, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1390
1391 /* RC4 is sort-of broken -- move the the end */
1392 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1393
1394 /* Now sort by symmetric encryption strength. The above ordering remains
1395 * in force within each class */
1396 if (!ssl_cipher_strength_sort(&head, &tail)) {
1397 OPENSSL_free(co_list);
1398 return NULL;
1399 }
1400
1401 /* Now disable everything (maintaining the ordering!) */
1402 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1403
1404
1405 /*
1406 * We also need cipher aliases for selecting based on the rule_str.
1407 * There might be two types of entries in the rule_str: 1) names
1408 * of ciphers themselves 2) aliases for groups of ciphers.
1409 * For 1) we need the available ciphers and for 2) the cipher
1410 * groups of cipher_aliases added together in one list (otherwise
1411 * we would be happy with just the cipher_aliases table).
1412 */
1413 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
1414 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1415 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
1416 if (ca_list == NULL) {
1417 OPENSSL_free(co_list);
1418 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1419 return(NULL); /* Failure */
1420 }
1421 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1422 disabled_mkey, disabled_auth, disabled_enc,
1423 disabled_mac, disabled_ssl, head);
1424
1425 /*
1426 * If the rule_string begins with DEFAULT, apply the default rule
1427 * before using the (possibly available) additional rules.
1428 */
1429 ok = 1;
1430 rule_p = rule_str;
1431 if (strncmp(rule_str, "DEFAULT", 7) == 0) {
1432 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1433 &head, &tail, ca_list);
1434 rule_p += 7;
1435 if (*rule_p == ':')
1436 rule_p++;
1437 }
1438
1439 if (ok && (strlen(rule_p) > 0))
1440 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list);
1441
1442 OPENSSL_free((void *)ca_list); /* Not needed anymore */
1443
1444 if (!ok)
1445 { /* Rule processing failure */
1446 OPENSSL_free(co_list);
1447 return (NULL);
1448 }
1449
1450 /*
1451 * Allocate new "cipherstack" for the result, return with error
1452 * if we cannot get one.
1453 */
1454 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) {
1455 OPENSSL_free(co_list);
1456 return (NULL);
1457 }
1458
1459 /*
1460 * The cipher selection for the list is done. The ciphers are added
1461 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1462 */
1463 for (curr = head; curr != NULL; curr = curr->next) {
1464#ifdef OPENSSL_FIPS
1465 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS))
1466#else
1467 if (curr->active)
1468#endif
1469 {
1470 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1471#ifdef CIPHER_DEBUG
1472 printf("<%s>\n", curr->cipher->name);
1473#endif
1474 }
1475 }
1476 OPENSSL_free(co_list); /* Not needed any longer */
1477
1478 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1479 if (tmp_cipher_list == NULL) {
1480 sk_SSL_CIPHER_free(cipherstack);
1481 return NULL;
1482 }
1483 if (*cipher_list != NULL)
1484 sk_SSL_CIPHER_free(*cipher_list);
1485 *cipher_list = cipherstack;
1486 if (*cipher_list_by_id != NULL)
1487 sk_SSL_CIPHER_free(*cipher_list_by_id);
1488 *cipher_list_by_id = tmp_cipher_list;
1489 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id, ssl_cipher_ptr_id_cmp);
1490
1491 sk_SSL_CIPHER_sort(*cipher_list_by_id);
1492 return (cipherstack);
1493}
1494
1495char
1496*SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
1497{
1498 int is_export, pkl, kl, l;
1499 const char *ver, *exp_str;
1500 const char *kx, *au, *enc, *mac;
1501 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, alg2;
1502#ifdef KSSL_DEBUG
1503 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n";
1504#else
1505 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1506#endif /* KSSL_DEBUG */
1507
1508 alg_mkey = cipher->algorithm_mkey;
1509 alg_auth = cipher->algorithm_auth;
1510 alg_enc = cipher->algorithm_enc;
1511 alg_mac = cipher->algorithm_mac;
1512 alg_ssl = cipher->algorithm_ssl;
1513
1514 alg2 = cipher->algorithm2;
1515
1516 is_export = SSL_C_IS_EXPORT(cipher);
1517 pkl = SSL_C_EXPORT_PKEYLENGTH(cipher);
1518 kl = SSL_C_EXPORT_KEYLENGTH(cipher);
1519 exp_str = is_export?" export":"";
1520
1521 if (alg_ssl & SSL_SSLV2)
1522 ver="SSLv2";
1523 else if (alg_ssl & SSL_SSLV3)
1524 ver="SSLv3";
1525 else if (alg_ssl & SSL_TLSV1_2)
1526 ver="TLSv1.2";
1527 else
1528 ver="unknown";
1529
1530 switch (alg_mkey) {
1531 case SSL_kRSA:
1532 kx = is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1533 break;
1534 case SSL_kDHr:
1535 kx="DH/RSA";
1536 break;
1537 case SSL_kDHd:
1538 kx="DH/DSS";
1539 break;
1540 case SSL_kKRB5:
1541 kx="KRB5";
1542 break;
1543 case SSL_kEDH:
1544 kx = is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1545 break;
1546 case SSL_kECDHr:
1547 kx="ECDH/RSA";
1548 break;
1549 case SSL_kECDHe:
1550 kx="ECDH/ECDSA";
1551 break;
1552 case SSL_kEECDH:
1553 kx="ECDH";
1554 break;
1555 case SSL_kPSK:
1556 kx="PSK";
1557 break;
1558 case SSL_kSRP:
1559 kx="SRP";
1560 break;
1561 default:
1562 kx="unknown";
1563 }
1564
1565 switch (alg_auth) {
1566 case SSL_aRSA:
1567 au="RSA";
1568 break;
1569 case SSL_aDSS:
1570 au="DSS";
1571 break;
1572 case SSL_aDH:
1573 au="DH";
1574 break;
1575 case SSL_aKRB5:
1576 au="KRB5";
1577 break;
1578 case SSL_aECDH:
1579 au="ECDH";
1580 break;
1581 case SSL_aNULL:
1582 au="None";
1583 break;
1584 case SSL_aECDSA:
1585 au="ECDSA";
1586 break;
1587 case SSL_aPSK:
1588 au="PSK";
1589 break;
1590 default:
1591 au="unknown";
1592 break;
1593 }
1594
1595 switch (alg_enc) {
1596 case SSL_DES:
1597 enc = (is_export && kl == 5)?"DES(40)":"DES(56)";
1598 break;
1599 case SSL_3DES:
1600 enc="3DES(168)";
1601 break;
1602 case SSL_RC4:
1603 enc = is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1604 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1605 break;
1606 case SSL_RC2:
1607 enc = is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1608 break;
1609 case SSL_IDEA:
1610 enc="IDEA(128)";
1611 break;
1612 case SSL_eNULL:
1613 enc="None";
1614 break;
1615 case SSL_AES128:
1616 enc="AES(128)";
1617 break;
1618 case SSL_AES256:
1619 enc="AES(256)";
1620 break;
1621 case SSL_AES128GCM:
1622 enc="AESGCM(128)";
1623 break;
1624 case SSL_AES256GCM:
1625 enc="AESGCM(256)";
1626 break;
1627 case SSL_CAMELLIA128:
1628 enc="Camellia(128)";
1629 break;
1630 case SSL_CAMELLIA256:
1631 enc="Camellia(256)";
1632 break;
1633 case SSL_SEED:
1634 enc="SEED(128)";
1635 break;
1636 default:
1637 enc="unknown";
1638 break;
1639 }
1640
1641 switch (alg_mac) {
1642 case SSL_MD5:
1643 mac="MD5";
1644 break;
1645 case SSL_SHA1:
1646 mac="SHA1";
1647 break;
1648 case SSL_SHA256:
1649 mac="SHA256";
1650 break;
1651 case SSL_SHA384:
1652 mac="SHA384";
1653 break;
1654 case SSL_AEAD:
1655 mac="AEAD";
1656 break;
1657 default:
1658 mac="unknown";
1659 break;
1660 }
1661
1662 if (buf == NULL) {
1663 len = 128;
1664 buf = OPENSSL_malloc(len);
1665 if (buf == NULL)
1666 return("OPENSSL_malloc Error");
1667 } else if (len < 128)
1668 return("Buffer too small");
1669
1670#ifdef KSSL_DEBUG
1671 l = snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac, exp_str, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl);
1672#else
1673 l = snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac, exp_str);
1674#endif /* KSSL_DEBUG */
1675 if (l >= len || l == -1)
1676 return("Buffer too small");
1677 else
1678 return (buf);
1679}
1680
1681char
1682*SSL_CIPHER_get_version(const SSL_CIPHER *c)
1683{
1684 int i;
1685
1686 if (c == NULL)
1687 return("(NONE)");
1688 i = (int)(c->id >> 24L);
1689 if (i == 3)
1690 return("TLSv1/SSLv3");
1691 else if (i == 2)
1692 return("SSLv2");
1693 else
1694 return("unknown");
1695}
1696
1697/* return the actual cipher being used */
1698const char
1699*SSL_CIPHER_get_name(const SSL_CIPHER *c)
1700{
1701 if (c != NULL)
1702 return (c->name);
1703 return("(NONE)");
1704}
1705
1706/* number of bits for symmetric cipher */
1707int
1708SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1709{
1710 int ret = 0;
1711
1712 if (c != NULL) {
1713 if (alg_bits != NULL)
1714 *alg_bits = c->alg_bits;
1715 ret = c->strength_bits;
1716 }
1717 return (ret);
1718}
1719
1720unsigned long
1721SSL_CIPHER_get_id(const SSL_CIPHER *c)
1722{
1723 return c->id;
1724}
1725
1726SSL_COMP
1727*ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1728{
1729 SSL_COMP *ctmp;
1730 int i, nn;
1731
1732 if ((n == 0)
1733 || (sk == NULL)) return (NULL);
1734 nn = sk_SSL_COMP_num(sk);
1735 for (i = 0; i < nn; i++) {
1736 ctmp = sk_SSL_COMP_value(sk, i);
1737 if (ctmp->id == n)
1738 return (ctmp);
1739 }
1740 return (NULL);
1741}
1742
1743#ifdef OPENSSL_NO_COMP
1744void
1745*SSL_COMP_get_compression_methods(void)
1746{
1747 return NULL;
1748}
1749
1750int
1751SSL_COMP_add_compression_method(int id, void *cm)
1752{
1753 return 1;
1754}
1755
1756const char
1757*SSL_COMP_get_name(const void *comp)
1758{
1759 return NULL;
1760}
1761#else
1762STACK_OF(SSL_COMP)
1763*SSL_COMP_get_compression_methods(void)
1764{
1765 load_builtin_compressions();
1766 return (ssl_comp_methods);
1767}
1768
1769int
1770SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1771{
1772 SSL_COMP *comp;
1773
1774 if (cm == NULL || cm->type == NID_undef)
1775 return 1;
1776
1777 /* According to draft-ietf-tls-compression-04.txt, the
1778 compression number ranges should be the following:
1779
1780 0 to 63: methods defined by the IETF
1781 64 to 192: external party methods assigned by IANA
1782 193 to 255: reserved for private use */
1783 if (id < 193 || id > 255) {
1784 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1785 return 0;
1786 }
1787
1788 MemCheck_off();
1789 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1790 comp->id = id;
1791 comp->method = cm;
1792 load_builtin_compressions();
1793 if (ssl_comp_methods
1794 && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) {
1795 OPENSSL_free(comp);
1796 MemCheck_on();
1797 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, SSL_R_DUPLICATE_COMPRESSION_ID);
1798 return (1);
1799 } else if ((ssl_comp_methods == NULL)
1800 || !sk_SSL_COMP_push(ssl_comp_methods, comp)) {
1801 OPENSSL_free(comp);
1802 MemCheck_on();
1803 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE);
1804 return (1);
1805 } else {
1806 MemCheck_on();
1807 return (0);
1808 }
1809}
1810
1811const char
1812*SSL_COMP_get_name(const COMP_METHOD *comp)
1813{
1814 if (comp)
1815 return comp->name;
1816 return NULL;
1817}
1818
1819#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-10-05 17:39:50 +0000