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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 {
220 const SSL_CIPHER *cipher;
221 int active;
222 int dead;
223 struct cipher_order_st *next,*prev;
224 } CIPHER_ORDER;
225
226static 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
274 /* aliases combining key exchange and server authentication */
275 {0,SSL_TXT_EDH,0, SSL_kEDH,~SSL_aNULL,0,0,0,0,0,0,0},
276 {0,SSL_TXT_EECDH,0, SSL_kEECDH,~SSL_aNULL,0,0,0,0,0,0,0},
277 {0,SSL_TXT_NULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0},
278 {0,SSL_TXT_KRB5,0, SSL_kKRB5,SSL_aKRB5,0,0,0,0,0,0,0},
279 {0,SSL_TXT_RSA,0, SSL_kRSA,SSL_aRSA,0,0,0,0,0,0,0},
280 {0,SSL_TXT_ADH,0, SSL_kEDH,SSL_aNULL,0,0,0,0,0,0,0},
281 {0,SSL_TXT_AECDH,0, SSL_kEECDH,SSL_aNULL,0,0,0,0,0,0,0},
282 {0,SSL_TXT_PSK,0, SSL_kPSK,SSL_aPSK,0,0,0,0,0,0,0},
283 {0,SSL_TXT_SRP,0, SSL_kSRP,0,0,0,0,0,0,0,0},
284
285
286 /* symmetric encryption aliases */
287 {0,SSL_TXT_DES,0, 0,0,SSL_DES, 0,0,0,0,0,0},
288 {0,SSL_TXT_3DES,0, 0,0,SSL_3DES, 0,0,0,0,0,0},
289 {0,SSL_TXT_RC4,0, 0,0,SSL_RC4, 0,0,0,0,0,0},
290 {0,SSL_TXT_RC2,0, 0,0,SSL_RC2, 0,0,0,0,0,0},
291 {0,SSL_TXT_IDEA,0, 0,0,SSL_IDEA, 0,0,0,0,0,0},
292 {0,SSL_TXT_SEED,0, 0,0,SSL_SEED, 0,0,0,0,0,0},
293 {0,SSL_TXT_eNULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0},
294 {0,SSL_TXT_AES128,0, 0,0,SSL_AES128|SSL_AES128GCM,0,0,0,0,0,0},
295 {0,SSL_TXT_AES256,0, 0,0,SSL_AES256|SSL_AES256GCM,0,0,0,0,0,0},
296 {0,SSL_TXT_AES,0, 0,0,SSL_AES,0,0,0,0,0,0},
297 {0,SSL_TXT_AES_GCM,0, 0,0,SSL_AES128GCM|SSL_AES256GCM,0,0,0,0,0,0},
298 {0,SSL_TXT_CAMELLIA128,0,0,0,SSL_CAMELLIA128,0,0,0,0,0,0},
299 {0,SSL_TXT_CAMELLIA256,0,0,0,SSL_CAMELLIA256,0,0,0,0,0,0},
300 {0,SSL_TXT_CAMELLIA ,0,0,0,SSL_CAMELLIA128|SSL_CAMELLIA256,0,0,0,0,0,0},
301
302 /* MAC aliases */
303 {0,SSL_TXT_MD5,0, 0,0,0,SSL_MD5, 0,0,0,0,0},
304 {0,SSL_TXT_SHA1,0, 0,0,0,SSL_SHA1, 0,0,0,0,0},
305 {0,SSL_TXT_SHA,0, 0,0,0,SSL_SHA1, 0,0,0,0,0},
306 {0,SSL_TXT_GOST94,0, 0,0,0,SSL_GOST94, 0,0,0,0,0},
307 {0,SSL_TXT_GOST89MAC,0, 0,0,0,SSL_GOST89MAC, 0,0,0,0,0},
308 {0,SSL_TXT_SHA256,0, 0,0,0,SSL_SHA256, 0,0,0,0,0},
309 {0,SSL_TXT_SHA384,0, 0,0,0,SSL_SHA384, 0,0,0,0,0},
310
311 /* protocol version aliases */
312 {0,SSL_TXT_SSLV2,0, 0,0,0,0,SSL_SSLV2, 0,0,0,0},
313 {0,SSL_TXT_SSLV3,0, 0,0,0,0,SSL_SSLV3, 0,0,0,0},
314 {0,SSL_TXT_TLSV1,0, 0,0,0,0,SSL_TLSV1, 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 get_optional_pkey_id(const char *pkey_name)
335 {
336 const EVP_PKEY_ASN1_METHOD *ameth;
337 int pkey_id=0;
338 ameth = EVP_PKEY_asn1_find_str(NULL,pkey_name,-1);
339 if (ameth)
340 {
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 get_optional_pkey_id(const char *pkey_name)
349 {
350 const EVP_PKEY_ASN1_METHOD *ameth;
351 ENGINE *tmpeng = NULL;
352 int pkey_id=0;
353 ameth = EVP_PKEY_asn1_find_str(&tmpeng,pkey_name,-1);
354 if (ameth)
355 {
356 EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth);
357 }
358 if (tmpeng) ENGINE_finish(tmpeng);
359 return pkey_id;
360 }
361
362#endif
363
364void ssl_load_ciphers(void)
365 {
366 ssl_cipher_methods[SSL_ENC_DES_IDX]=
367 EVP_get_cipherbyname(SN_des_cbc);
368 ssl_cipher_methods[SSL_ENC_3DES_IDX]=
369 EVP_get_cipherbyname(SN_des_ede3_cbc);
370 ssl_cipher_methods[SSL_ENC_RC4_IDX]=
371 EVP_get_cipherbyname(SN_rc4);
372 ssl_cipher_methods[SSL_ENC_RC2_IDX]=
373 EVP_get_cipherbyname(SN_rc2_cbc);
374#ifndef OPENSSL_NO_IDEA
375 ssl_cipher_methods[SSL_ENC_IDEA_IDX]=
376 EVP_get_cipherbyname(SN_idea_cbc);
377#else
378 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL;
379#endif
380 ssl_cipher_methods[SSL_ENC_AES128_IDX]=
381 EVP_get_cipherbyname(SN_aes_128_cbc);
382 ssl_cipher_methods[SSL_ENC_AES256_IDX]=
383 EVP_get_cipherbyname(SN_aes_256_cbc);
384 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]=
385 EVP_get_cipherbyname(SN_camellia_128_cbc);
386 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]=
387 EVP_get_cipherbyname(SN_camellia_256_cbc);
388 ssl_cipher_methods[SSL_ENC_GOST89_IDX]=
389 EVP_get_cipherbyname(SN_gost89_cnt);
390 ssl_cipher_methods[SSL_ENC_SEED_IDX]=
391 EVP_get_cipherbyname(SN_seed_cbc);
392
393 ssl_cipher_methods[SSL_ENC_AES128GCM_IDX]=
394 EVP_get_cipherbyname(SN_aes_128_gcm);
395 ssl_cipher_methods[SSL_ENC_AES256GCM_IDX]=
396 EVP_get_cipherbyname(SN_aes_256_gcm);
397
398 ssl_digest_methods[SSL_MD_MD5_IDX]=
399 EVP_get_digestbyname(SN_md5);
400 ssl_mac_secret_size[SSL_MD_MD5_IDX]=
401 EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]);
402 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0);
403 ssl_digest_methods[SSL_MD_SHA1_IDX]=
404 EVP_get_digestbyname(SN_sha1);
405 ssl_mac_secret_size[SSL_MD_SHA1_IDX]=
406 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]);
407 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0);
408 ssl_digest_methods[SSL_MD_GOST94_IDX]=
409 EVP_get_digestbyname(SN_id_GostR3411_94);
410 if (ssl_digest_methods[SSL_MD_GOST94_IDX])
411 {
412 ssl_mac_secret_size[SSL_MD_GOST94_IDX]=
413 EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]);
414 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0);
415 }
416 ssl_digest_methods[SSL_MD_GOST89MAC_IDX]=
417 EVP_get_digestbyname(SN_id_Gost28147_89_MAC);
418 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac");
419 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) {
420 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX]=32;
421 }
422
423 ssl_digest_methods[SSL_MD_SHA256_IDX]=
424 EVP_get_digestbyname(SN_sha256);
425 ssl_mac_secret_size[SSL_MD_SHA256_IDX]=
426 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]);
427 ssl_digest_methods[SSL_MD_SHA384_IDX]=
428 EVP_get_digestbyname(SN_sha384);
429 ssl_mac_secret_size[SSL_MD_SHA384_IDX]=
430 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]);
431 }
432#ifndef OPENSSL_NO_COMP
433
434static int sk_comp_cmp(const SSL_COMP * const *a,
435 const SSL_COMP * const *b)
436 {
437 return((*a)->id-(*b)->id);
438 }
439
440static void load_builtin_compressions(void)
441 {
442 int got_write_lock = 0;
443
444 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
445 if (ssl_comp_methods == NULL)
446 {
447 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
448 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
449 got_write_lock = 1;
450
451 if (ssl_comp_methods == NULL)
452 {
453 SSL_COMP *comp = NULL;
454
455 MemCheck_off();
456 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp);
457 if (ssl_comp_methods != NULL)
458 {
459 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
460 if (comp != NULL)
461 {
462 comp->method=COMP_zlib();
463 if (comp->method
464 && comp->method->type == NID_undef)
465 OPENSSL_free(comp);
466 else
467 {
468 comp->id=SSL_COMP_ZLIB_IDX;
469 comp->name=comp->method->name;
470 sk_SSL_COMP_push(ssl_comp_methods,comp);
471 }
472 }
473 sk_SSL_COMP_sort(ssl_comp_methods);
474 }
475 MemCheck_on();
476 }
477 }
478
479 if (got_write_lock)
480 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
481 else
482 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
483 }
484#endif
485
486int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
487 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size,SSL_COMP **comp)
488 {
489 int i;
490 const SSL_CIPHER *c;
491
492 c=s->cipher;
493 if (c == NULL) return(0);
494 if (comp != NULL)
495 {
496 SSL_COMP ctmp;
497#ifndef OPENSSL_NO_COMP
498 load_builtin_compressions();
499#endif
500
501 *comp=NULL;
502 ctmp.id=s->compress_meth;
503 if (ssl_comp_methods != NULL)
504 {
505 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
506 if (i >= 0)
507 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
508 else
509 *comp=NULL;
510 }
511 }
512
513 if ((enc == NULL) || (md == NULL)) return(0);
514
515 switch (c->algorithm_enc)
516 {
517 case SSL_DES:
518 i=SSL_ENC_DES_IDX;
519 break;
520 case SSL_3DES:
521 i=SSL_ENC_3DES_IDX;
522 break;
523 case SSL_RC4:
524 i=SSL_ENC_RC4_IDX;
525 break;
526 case SSL_RC2:
527 i=SSL_ENC_RC2_IDX;
528 break;
529 case SSL_IDEA:
530 i=SSL_ENC_IDEA_IDX;
531 break;
532 case SSL_eNULL:
533 i=SSL_ENC_NULL_IDX;
534 break;
535 case SSL_AES128:
536 i=SSL_ENC_AES128_IDX;
537 break;
538 case SSL_AES256:
539 i=SSL_ENC_AES256_IDX;
540 break;
541 case SSL_CAMELLIA128:
542 i=SSL_ENC_CAMELLIA128_IDX;
543 break;
544 case SSL_CAMELLIA256:
545 i=SSL_ENC_CAMELLIA256_IDX;
546 break;
547 case SSL_eGOST2814789CNT:
548 i=SSL_ENC_GOST89_IDX;
549 break;
550 case SSL_SEED:
551 i=SSL_ENC_SEED_IDX;
552 break;
553 case SSL_AES128GCM:
554 i=SSL_ENC_AES128GCM_IDX;
555 break;
556 case SSL_AES256GCM:
557 i=SSL_ENC_AES256GCM_IDX;
558 break;
559 default:
560 i= -1;
561 break;
562 }
563
564 if ((i < 0) || (i > SSL_ENC_NUM_IDX))
565 *enc=NULL;
566 else
567 {
568 if (i == SSL_ENC_NULL_IDX)
569 *enc=EVP_enc_null();
570 else
571 *enc=ssl_cipher_methods[i];
572 }
573
574 switch (c->algorithm_mac)
575 {
576 case SSL_MD5:
577 i=SSL_MD_MD5_IDX;
578 break;
579 case SSL_SHA1:
580 i=SSL_MD_SHA1_IDX;
581 break;
582 case SSL_SHA256:
583 i=SSL_MD_SHA256_IDX;
584 break;
585 case SSL_SHA384:
586 i=SSL_MD_SHA384_IDX;
587 break;
588 case SSL_GOST94:
589 i = SSL_MD_GOST94_IDX;
590 break;
591 case SSL_GOST89MAC:
592 i = SSL_MD_GOST89MAC_IDX;
593 break;
594 default:
595 i= -1;
596 break;
597 }
598 if ((i < 0) || (i > SSL_MD_NUM_IDX))
599 {
600 *md=NULL;
601 if (mac_pkey_type!=NULL) *mac_pkey_type = NID_undef;
602 if (mac_secret_size!=NULL) *mac_secret_size = 0;
603 if (c->algorithm_mac == SSL_AEAD)
604 mac_pkey_type = NULL;
605 }
606 else
607 {
608 *md=ssl_digest_methods[i];
609 if (mac_pkey_type!=NULL) *mac_pkey_type = ssl_mac_pkey_id[i];
610 if (mac_secret_size!=NULL) *mac_secret_size = ssl_mac_secret_size[i];
611 }
612
613 if ((*enc != NULL) &&
614 (*md != NULL || (EVP_CIPHER_flags(*enc)&EVP_CIPH_FLAG_AEAD_CIPHER)) &&
615 (!mac_pkey_type||*mac_pkey_type != NID_undef))
616 {
617 const EVP_CIPHER *evp;
618
619 if (s->ssl_version>>8 != TLS1_VERSION_MAJOR ||
620 s->ssl_version < TLS1_VERSION)
621 return 1;
622
623#ifdef OPENSSL_FIPS
624 if (FIPS_mode())
625 return 1;
626#endif
627
628 if (c->algorithm_enc == SSL_RC4 &&
629 c->algorithm_mac == SSL_MD5 &&
630 (evp=EVP_get_cipherbyname("RC4-HMAC-MD5")))
631 *enc = evp, *md = NULL;
632 else if (c->algorithm_enc == SSL_AES128 &&
633 c->algorithm_mac == SSL_SHA1 &&
634 (evp=EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
635 *enc = evp, *md = NULL;
636 else if (c->algorithm_enc == SSL_AES256 &&
637 c->algorithm_mac == SSL_SHA1 &&
638 (evp=EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
639 *enc = evp, *md = NULL;
640 return(1);
641 }
642 else
643 return(0);
644 }
645
646int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md)
647{
648 if (idx <0||idx>=SSL_MD_NUM_IDX)
649 {
650 return 0;
651 }
652 *mask = ssl_handshake_digest_flag[idx];
653 if (*mask)
654 *md = ssl_digest_methods[idx];
655 else
656 *md = NULL;
657 return 1;
658}
659
660#define ITEM_SEP(a) \
661 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
662
663static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
664 CIPHER_ORDER **tail)
665 {
666 if (curr == *tail) return;
667 if (curr == *head)
668 *head=curr->next;
669 if (curr->prev != NULL)
670 curr->prev->next=curr->next;
671 if (curr->next != NULL)
672 curr->next->prev=curr->prev;
673 (*tail)->next=curr;
674 curr->prev= *tail;
675 curr->next=NULL;
676 *tail=curr;
677 }
678
679static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
680 CIPHER_ORDER **tail)
681 {
682 if (curr == *head) 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 ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl)
696 {
697 *mkey = 0;
698 *auth = 0;
699 *enc = 0;
700 *mac = 0;
701 *ssl = 0;
702
703#ifdef OPENSSL_NO_RSA
704 *mkey |= SSL_kRSA;
705 *auth |= SSL_aRSA;
706#endif
707#ifdef OPENSSL_NO_DSA
708 *auth |= SSL_aDSS;
709#endif
710 *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */
711 *auth |= SSL_aDH;
712#ifdef OPENSSL_NO_DH
713 *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH;
714 *auth |= SSL_aDH;
715#endif
716#ifdef OPENSSL_NO_KRB5
717 *mkey |= SSL_kKRB5;
718 *auth |= SSL_aKRB5;
719#endif
720#ifdef OPENSSL_NO_ECDSA
721 *auth |= SSL_aECDSA;
722#endif
723#ifdef OPENSSL_NO_ECDH
724 *mkey |= SSL_kECDHe|SSL_kECDHr;
725 *auth |= SSL_aECDH;
726#endif
727#ifdef OPENSSL_NO_PSK
728 *mkey |= SSL_kPSK;
729 *auth |= SSL_aPSK;
730#endif
731#ifdef OPENSSL_NO_SRP
732 *mkey |= SSL_kSRP;
733#endif
734 /* Check for presence of GOST 34.10 algorithms, and if they
735 * do not present, disable appropriate auth and key exchange */
736 if (!get_optional_pkey_id("gost94")) {
737 *auth |= SSL_aGOST94;
738 }
739 if (!get_optional_pkey_id("gost2001")) {
740 *auth |= SSL_aGOST01;
741 }
742 /* Disable GOST key exchange if no GOST signature algs are available * */
743 if ((*auth & (SSL_aGOST94|SSL_aGOST01)) == (SSL_aGOST94|SSL_aGOST01)) {
744 *mkey |= SSL_kGOST;
745 }
746#ifdef SSL_FORBID_ENULL
747 *enc |= SSL_eNULL;
748#endif
749
750
751
752 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0;
753 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0;
754 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0;
755 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0;
756 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0;
757 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0;
758 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0;
759 *enc |= (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] == NULL) ? SSL_AES128GCM:0;
760 *enc |= (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] == NULL) ? SSL_AES256GCM:0;
761 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0;
762 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0;
763 *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0;
764 *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0;
765
766 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0;
767 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0;
768 *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256:0;
769 *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384:0;
770 *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94:0;
771 *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef)? SSL_GOST89MAC:0;
772
773 }
774
775static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
776 int num_of_ciphers,
777 unsigned long disabled_mkey, unsigned long disabled_auth,
778 unsigned long disabled_enc, unsigned long disabled_mac,
779 unsigned long disabled_ssl,
780 CIPHER_ORDER *co_list,
781 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
782 {
783 int i, co_list_num;
784 const SSL_CIPHER *c;
785
786 /*
787 * We have num_of_ciphers descriptions compiled in, depending on the
788 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
789 * These will later be sorted in a linked list with at most num
790 * entries.
791 */
792
793 /* Get the initial list of ciphers */
794 co_list_num = 0; /* actual count of ciphers */
795 for (i = 0; i < num_of_ciphers; i++)
796 {
797 c = ssl_method->get_cipher(i);
798 /* drop those that use any of that is not available */
799 if ((c != NULL) && c->valid &&
800#ifdef OPENSSL_FIPS
801 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) &&
802#endif
803 !(c->algorithm_mkey & disabled_mkey) &&
804 !(c->algorithm_auth & disabled_auth) &&
805 !(c->algorithm_enc & disabled_enc) &&
806 !(c->algorithm_mac & disabled_mac) &&
807 !(c->algorithm_ssl & disabled_ssl))
808 {
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 {
828 co_list[0].prev = NULL;
829
830 if (co_list_num > 1)
831 {
832 co_list[0].next = &co_list[1];
833
834 for (i = 1; i < co_list_num - 1; i++)
835 {
836 co_list[i].prev = &co_list[i - 1];
837 co_list[i].next = &co_list[i + 1];
838 }
839
840 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
841 }
842
843 co_list[co_list_num - 1].next = NULL;
844
845 *head_p = &co_list[0];
846 *tail_p = &co_list[co_list_num - 1];
847 }
848 }
849
850static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list,
851 int num_of_group_aliases,
852 unsigned long disabled_mkey, unsigned long disabled_auth,
853 unsigned long disabled_enc, unsigned long disabled_mac,
854 unsigned long disabled_ssl,
855 CIPHER_ORDER *head)
856 {
857 CIPHER_ORDER *ciph_curr;
858 const SSL_CIPHER **ca_curr;
859 int i;
860 unsigned long mask_mkey = ~disabled_mkey;
861 unsigned long mask_auth = ~disabled_auth;
862 unsigned long mask_enc = ~disabled_enc;
863 unsigned long mask_mac = ~disabled_mac;
864 unsigned long mask_ssl = ~disabled_ssl;
865
866 /*
867 * First, add the real ciphers as already collected
868 */
869 ciph_curr = head;
870 ca_curr = ca_list;
871 while (ciph_curr != NULL)
872 {
873 *ca_curr = ciph_curr->cipher;
874 ca_curr++;
875 ciph_curr = ciph_curr->next;
876 }
877
878 /*
879 * Now we add the available ones from the cipher_aliases[] table.
880 * They represent either one or more algorithms, some of which
881 * in any affected category must be supported (set in enabled_mask),
882 * or represent a cipher strength value (will be added in any case because algorithms=0).
883 */
884 for (i = 0; i < num_of_group_aliases; i++)
885 {
886 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey;
887 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth;
888 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc;
889 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac;
890 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl;
891
892 if (algorithm_mkey)
893 if ((algorithm_mkey & mask_mkey) == 0)
894 continue;
895
896 if (algorithm_auth)
897 if ((algorithm_auth & mask_auth) == 0)
898 continue;
899
900 if (algorithm_enc)
901 if ((algorithm_enc & mask_enc) == 0)
902 continue;
903
904 if (algorithm_mac)
905 if ((algorithm_mac & mask_mac) == 0)
906 continue;
907
908 if (algorithm_ssl)
909 if ((algorithm_ssl & mask_ssl) == 0)
910 continue;
911
912 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
913 ca_curr++;
914 }
915
916 *ca_curr = NULL; /* end of list */
917 }
918
919static void ssl_cipher_apply_rule(unsigned long cipher_id,
920 unsigned long alg_mkey, unsigned long alg_auth,
921 unsigned long alg_enc, unsigned long alg_mac,
922 unsigned long alg_ssl,
923 unsigned long algo_strength,
924 int rule, int strength_bits,
925 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
926 {
927 CIPHER_ORDER *head, *tail, *curr, *curr2, *last;
928 const SSL_CIPHER *cp;
929 int reverse = 0;
930
931#ifdef CIPHER_DEBUG
932 printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
933 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits);
934#endif
935
936 if (rule == CIPHER_DEL)
937 reverse = 1; /* needed to maintain sorting between currently deleted ciphers */
938
939 head = *head_p;
940 tail = *tail_p;
941
942 if (reverse)
943 {
944 curr = tail;
945 last = head;
946 }
947 else
948 {
949 curr = head;
950 last = tail;
951 }
952
953 curr2 = curr;
954 for (;;)
955 {
956 if ((curr == NULL) || (curr == last)) break;
957 curr = curr2;
958 curr2 = reverse ? curr->prev : curr->next;
959
960 cp = curr->cipher;
961
962 /*
963 * Selection criteria is either the value of strength_bits
964 * or the algorithms used.
965 */
966 if (strength_bits >= 0)
967 {
968 if (strength_bits != cp->strength_bits)
969 continue;
970 }
971 else
972 {
973#ifdef CIPHER_DEBUG
974 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);
975#endif
976
977 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
978 continue;
979 if (alg_auth && !(alg_auth & cp->algorithm_auth))
980 continue;
981 if (alg_enc && !(alg_enc & cp->algorithm_enc))
982 continue;
983 if (alg_mac && !(alg_mac & cp->algorithm_mac))
984 continue;
985 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
986 continue;
987 if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength))
988 continue;
989 if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength))
990 continue;
991 }
992
993#ifdef CIPHER_DEBUG
994 printf("Action = %d\n", rule);
995#endif
996
997 /* add the cipher if it has not been added yet. */
998 if (rule == CIPHER_ADD)
999 {
1000 /* reverse == 0 */
1001 if (!curr->active)
1002 {
1003 ll_append_tail(&head, curr, &tail);
1004 curr->active = 1;
1005 }
1006 }
1007 /* Move the added cipher to this location */
1008 else if (rule == CIPHER_ORD)
1009 {
1010 /* reverse == 0 */
1011 if (curr->active)
1012 {
1013 ll_append_tail(&head, curr, &tail);
1014 }
1015 }
1016 else if (rule == CIPHER_DEL)
1017 {
1018 /* reverse == 1 */
1019 if (curr->active)
1020 {
1021 /* most recently deleted ciphersuites get best positions
1022 * for any future CIPHER_ADD (note that the CIPHER_DEL loop
1023 * works in reverse to maintain the order) */
1024 ll_append_head(&head, curr, &tail);
1025 curr->active = 0;
1026 }
1027 }
1028 else if (rule == CIPHER_KILL)
1029 {
1030 /* reverse == 0 */
1031 if (head == curr)
1032 head = curr->next;
1033 else
1034 curr->prev->next = curr->next;
1035 if (tail == curr)
1036 tail = curr->prev;
1037 curr->active = 0;
1038 if (curr->next != NULL)
1039 curr->next->prev = curr->prev;
1040 if (curr->prev != NULL)
1041 curr->prev->next = curr->next;
1042 curr->next = NULL;
1043 curr->prev = NULL;
1044 }
1045 }
1046
1047 *head_p = head;
1048 *tail_p = tail;
1049 }
1050
1051static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
1052 CIPHER_ORDER **tail_p)
1053 {
1054 int max_strength_bits, i, *number_uses;
1055 CIPHER_ORDER *curr;
1056
1057 /*
1058 * This routine sorts the ciphers with descending strength. The sorting
1059 * must keep the pre-sorted sequence, so we apply the normal sorting
1060 * routine as '+' movement to the end of the list.
1061 */
1062 max_strength_bits = 0;
1063 curr = *head_p;
1064 while (curr != NULL)
1065 {
1066 if (curr->active &&
1067 (curr->cipher->strength_bits > max_strength_bits))
1068 max_strength_bits = curr->cipher->strength_bits;
1069 curr = curr->next;
1070 }
1071
1072 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
1073 if (!number_uses)
1074 {
1075 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE);
1076 return(0);
1077 }
1078 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
1079
1080 /*
1081 * Now find the strength_bits values actually used
1082 */
1083 curr = *head_p;
1084 while (curr != NULL)
1085 {
1086 if (curr->active)
1087 number_uses[curr->cipher->strength_bits]++;
1088 curr = curr->next;
1089 }
1090 /*
1091 * Go through the list of used strength_bits values in descending
1092 * order.
1093 */
1094 for (i = max_strength_bits; i >= 0; i--)
1095 if (number_uses[i] > 0)
1096 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p);
1097
1098 OPENSSL_free(number_uses);
1099 return(1);
1100 }
1101
1102static int ssl_cipher_process_rulestr(const char *rule_str,
1103 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p,
1104 const SSL_CIPHER **ca_list)
1105 {
1106 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength;
1107 const char *l, *buf;
1108 int j, multi, found, rule, retval, ok, buflen;
1109 unsigned long cipher_id = 0;
1110 char ch;
1111
1112 retval = 1;
1113 l = rule_str;
1114 for (;;)
1115 {
1116 ch = *l;
1117
1118 if (ch == '\0')
1119 break; /* done */
1120 if (ch == '-')
1121 { rule = CIPHER_DEL; l++; }
1122 else if (ch == '+')
1123 { rule = CIPHER_ORD; l++; }
1124 else if (ch == '!')
1125 { rule = CIPHER_KILL; l++; }
1126 else if (ch == '@')
1127 { rule = CIPHER_SPECIAL; l++; }
1128 else
1129 { rule = CIPHER_ADD; }
1130
1131 if (ITEM_SEP(ch))
1132 {
1133 l++;
1134 continue;
1135 }
1136
1137 alg_mkey = 0;
1138 alg_auth = 0;
1139 alg_enc = 0;
1140 alg_mac = 0;
1141 alg_ssl = 0;
1142 algo_strength = 0;
1143
1144 for (;;)
1145 {
1146 ch = *l;
1147 buf = l;
1148 buflen = 0;
1149#ifndef CHARSET_EBCDIC
1150 while ( ((ch >= 'A') && (ch <= 'Z')) ||
1151 ((ch >= '0') && (ch <= '9')) ||
1152 ((ch >= 'a') && (ch <= 'z')) ||
1153 (ch == '-'))
1154#else
1155 while ( isalnum(ch) || (ch == '-'))
1156#endif
1157 {
1158 ch = *(++l);
1159 buflen++;
1160 }
1161
1162 if (buflen == 0)
1163 {
1164 /*
1165 * We hit something we cannot deal with,
1166 * it is no command or separator nor
1167 * alphanumeric, so we call this an error.
1168 */
1169 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1170 SSL_R_INVALID_COMMAND);
1171 retval = found = 0;
1172 l++;
1173 break;
1174 }
1175
1176 if (rule == CIPHER_SPECIAL)
1177 {
1178 found = 0; /* unused -- avoid compiler warning */
1179 break; /* special treatment */
1180 }
1181
1182 /* check for multi-part specification */
1183 if (ch == '+')
1184 {
1185 multi=1;
1186 l++;
1187 }
1188 else
1189 multi=0;
1190
1191 /*
1192 * Now search for the cipher alias in the ca_list. Be careful
1193 * with the strncmp, because the "buflen" limitation
1194 * will make the rule "ADH:SOME" and the cipher
1195 * "ADH-MY-CIPHER" look like a match for buflen=3.
1196 * So additionally check whether the cipher name found
1197 * has the correct length. We can save a strlen() call:
1198 * just checking for the '\0' at the right place is
1199 * sufficient, we have to strncmp() anyway. (We cannot
1200 * use strcmp(), because buf is not '\0' terminated.)
1201 */
1202 j = found = 0;
1203 cipher_id = 0;
1204 while (ca_list[j])
1205 {
1206 if (!strncmp(buf, ca_list[j]->name, buflen) &&
1207 (ca_list[j]->name[buflen] == '\0'))
1208 {
1209 found = 1;
1210 break;
1211 }
1212 else
1213 j++;
1214 }
1215
1216 if (!found)
1217 break; /* ignore this entry */
1218
1219 if (ca_list[j]->algorithm_mkey)
1220 {
1221 if (alg_mkey)
1222 {
1223 alg_mkey &= ca_list[j]->algorithm_mkey;
1224 if (!alg_mkey) { found = 0; break; }
1225 }
1226 else
1227 alg_mkey = ca_list[j]->algorithm_mkey;
1228 }
1229
1230 if (ca_list[j]->algorithm_auth)
1231 {
1232 if (alg_auth)
1233 {
1234 alg_auth &= ca_list[j]->algorithm_auth;
1235 if (!alg_auth) { found = 0; break; }
1236 }
1237 else
1238 alg_auth = ca_list[j]->algorithm_auth;
1239 }
1240
1241 if (ca_list[j]->algorithm_enc)
1242 {
1243 if (alg_enc)
1244 {
1245 alg_enc &= ca_list[j]->algorithm_enc;
1246 if (!alg_enc) { found = 0; break; }
1247 }
1248 else
1249 alg_enc = ca_list[j]->algorithm_enc;
1250 }
1251
1252 if (ca_list[j]->algorithm_mac)
1253 {
1254 if (alg_mac)
1255 {
1256 alg_mac &= ca_list[j]->algorithm_mac;
1257 if (!alg_mac) { found = 0; break; }
1258 }
1259 else
1260 alg_mac = ca_list[j]->algorithm_mac;
1261 }
1262
1263 if (ca_list[j]->algo_strength & SSL_EXP_MASK)
1264 {
1265 if (algo_strength & SSL_EXP_MASK)
1266 {
1267 algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK;
1268 if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; }
1269 }
1270 else
1271 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK;
1272 }
1273
1274 if (ca_list[j]->algo_strength & SSL_STRONG_MASK)
1275 {
1276 if (algo_strength & SSL_STRONG_MASK)
1277 {
1278 algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK;
1279 if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; }
1280 }
1281 else
1282 algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK;
1283 }
1284
1285 if (ca_list[j]->valid)
1286 {
1287 /* explicit ciphersuite found; its protocol version
1288 * does not become part of the search pattern!*/
1289
1290 cipher_id = ca_list[j]->id;
1291 }
1292 else
1293 {
1294 /* not an explicit ciphersuite; only in this case, the
1295 * protocol version is considered part of the search pattern */
1296
1297 if (ca_list[j]->algorithm_ssl)
1298 {
1299 if (alg_ssl)
1300 {
1301 alg_ssl &= ca_list[j]->algorithm_ssl;
1302 if (!alg_ssl) { found = 0; break; }
1303 }
1304 else
1305 alg_ssl = ca_list[j]->algorithm_ssl;
1306 }
1307 }
1308
1309 if (!multi) break;
1310 }
1311
1312 /*
1313 * Ok, we have the rule, now apply it
1314 */
1315 if (rule == CIPHER_SPECIAL)
1316 { /* special command */
1317 ok = 0;
1318 if ((buflen == 8) &&
1319 !strncmp(buf, "STRENGTH", 8))
1320 ok = ssl_cipher_strength_sort(head_p, tail_p);
1321 else
1322 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1323 SSL_R_INVALID_COMMAND);
1324 if (ok == 0)
1325 retval = 0;
1326 /*
1327 * We do not support any "multi" options
1328 * together with "@", so throw away the
1329 * rest of the command, if any left, until
1330 * end or ':' is found.
1331 */
1332 while ((*l != '\0') && !ITEM_SEP(*l))
1333 l++;
1334 }
1335 else if (found)
1336 {
1337 ssl_cipher_apply_rule(cipher_id,
1338 alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength,
1339 rule, -1, head_p, tail_p);
1340 }
1341 else
1342 {
1343 while ((*l != '\0') && !ITEM_SEP(*l))
1344 l++;
1345 }
1346 if (*l == '\0') break; /* done */
1347 }
1348
1349 return(retval);
1350 }
1351
1352STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
1353 STACK_OF(SSL_CIPHER) **cipher_list,
1354 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
1355 const char *rule_str)
1356 {
1357 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1358 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl;
1359 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1360 const char *rule_p;
1361 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1362 const SSL_CIPHER **ca_list = NULL;
1363
1364 /*
1365 * Return with error if nothing to do.
1366 */
1367 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1368 return NULL;
1369
1370 /*
1371 * To reduce the work to do we only want to process the compiled
1372 * in algorithms, so we first get the mask of disabled ciphers.
1373 */
1374 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl);
1375
1376 /*
1377 * Now we have to collect the available ciphers from the compiled
1378 * in ciphers. We cannot get more than the number compiled in, so
1379 * it is used for allocation.
1380 */
1381 num_of_ciphers = ssl_method->num_ciphers();
1382#ifdef KSSL_DEBUG
1383 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
1384#endif /* KSSL_DEBUG */
1385 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
1386 if (co_list == NULL)
1387 {
1388 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1389 return(NULL); /* Failure */
1390 }
1391
1392 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1393 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl,
1394 co_list, &head, &tail);
1395
1396
1397 /* Now arrange all ciphers by preference: */
1398
1399 /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */
1400 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1401 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1402
1403 /* AES is our preferred symmetric cipher */
1404 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1405
1406 /* Temporarily enable everything else for sorting */
1407 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1408
1409 /* Low priority for MD5 */
1410 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail);
1411
1412 /* Move anonymous ciphers to the end. Usually, these will remain disabled.
1413 * (For applications that allow them, they aren't too bad, but we prefer
1414 * authenticated ciphers.) */
1415 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1416
1417 /* Move ciphers without forward secrecy to the end */
1418 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1419 /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */
1420 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1421 ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1422 ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1423
1424 /* RC4 is sort-of broken -- move the the end */
1425 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1426
1427 /* Now sort by symmetric encryption strength. The above ordering remains
1428 * in force within each class */
1429 if (!ssl_cipher_strength_sort(&head, &tail))
1430 {
1431 OPENSSL_free(co_list);
1432 return NULL;
1433 }
1434
1435 /* Now disable everything (maintaining the ordering!) */
1436 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1437
1438
1439 /*
1440 * We also need cipher aliases for selecting based on the rule_str.
1441 * There might be two types of entries in the rule_str: 1) names
1442 * of ciphers themselves 2) aliases for groups of ciphers.
1443 * For 1) we need the available ciphers and for 2) the cipher
1444 * groups of cipher_aliases added together in one list (otherwise
1445 * we would be happy with just the cipher_aliases table).
1446 */
1447 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
1448 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1449 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
1450 if (ca_list == NULL)
1451 {
1452 OPENSSL_free(co_list);
1453 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1454 return(NULL); /* Failure */
1455 }
1456 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1457 disabled_mkey, disabled_auth, disabled_enc,
1458 disabled_mac, disabled_ssl, head);
1459
1460 /*
1461 * If the rule_string begins with DEFAULT, apply the default rule
1462 * before using the (possibly available) additional rules.
1463 */
1464 ok = 1;
1465 rule_p = rule_str;
1466 if (strncmp(rule_str,"DEFAULT",7) == 0)
1467 {
1468 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1469 &head, &tail, ca_list);
1470 rule_p += 7;
1471 if (*rule_p == ':')
1472 rule_p++;
1473 }
1474
1475 if (ok && (strlen(rule_p) > 0))
1476 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list);
1477
1478 OPENSSL_free((void *)ca_list); /* Not needed anymore */
1479
1480 if (!ok)
1481 { /* Rule processing failure */
1482 OPENSSL_free(co_list);
1483 return(NULL);
1484 }
1485
1486 /*
1487 * Allocate new "cipherstack" for the result, return with error
1488 * if we cannot get one.
1489 */
1490 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL)
1491 {
1492 OPENSSL_free(co_list);
1493 return(NULL);
1494 }
1495
1496 /*
1497 * The cipher selection for the list is done. The ciphers are added
1498 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1499 */
1500 for (curr = head; curr != NULL; curr = curr->next)
1501 {
1502#ifdef OPENSSL_FIPS
1503 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS))
1504#else
1505 if (curr->active)
1506#endif
1507 {
1508 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1509#ifdef CIPHER_DEBUG
1510 printf("<%s>\n",curr->cipher->name);
1511#endif
1512 }
1513 }
1514 OPENSSL_free(co_list); /* Not needed any longer */
1515
1516 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1517 if (tmp_cipher_list == NULL)
1518 {
1519 sk_SSL_CIPHER_free(cipherstack);
1520 return NULL;
1521 }
1522 if (*cipher_list != NULL)
1523 sk_SSL_CIPHER_free(*cipher_list);
1524 *cipher_list = cipherstack;
1525 if (*cipher_list_by_id != NULL)
1526 sk_SSL_CIPHER_free(*cipher_list_by_id);
1527 *cipher_list_by_id = tmp_cipher_list;
1528 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
1529
1530 sk_SSL_CIPHER_sort(*cipher_list_by_id);
1531 return(cipherstack);
1532 }
1533
1534char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
1535 {
1536 int is_export,pkl,kl;
1537 const char *ver,*exp_str;
1538 const char *kx,*au,*enc,*mac;
1539 unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2;
1540#ifdef KSSL_DEBUG
1541 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n";
1542#else
1543 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1544#endif /* KSSL_DEBUG */
1545
1546 alg_mkey = cipher->algorithm_mkey;
1547 alg_auth = cipher->algorithm_auth;
1548 alg_enc = cipher->algorithm_enc;
1549 alg_mac = cipher->algorithm_mac;
1550 alg_ssl = cipher->algorithm_ssl;
1551
1552 alg2=cipher->algorithm2;
1553
1554 is_export=SSL_C_IS_EXPORT(cipher);
1555 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1556 kl=SSL_C_EXPORT_KEYLENGTH(cipher);
1557 exp_str=is_export?" export":"";
1558
1559 if (alg_ssl & SSL_SSLV2)
1560 ver="SSLv2";
1561 else if (alg_ssl & SSL_SSLV3)
1562 ver="SSLv3";
1563 else if (alg_ssl & SSL_TLSV1_2)
1564 ver="TLSv1.2";
1565 else
1566 ver="unknown";
1567
1568 switch (alg_mkey)
1569 {
1570 case SSL_kRSA:
1571 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1572 break;
1573 case SSL_kDHr:
1574 kx="DH/RSA";
1575 break;
1576 case SSL_kDHd:
1577 kx="DH/DSS";
1578 break;
1579 case SSL_kKRB5:
1580 kx="KRB5";
1581 break;
1582 case SSL_kEDH:
1583 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1584 break;
1585 case SSL_kECDHr:
1586 kx="ECDH/RSA";
1587 break;
1588 case SSL_kECDHe:
1589 kx="ECDH/ECDSA";
1590 break;
1591 case SSL_kEECDH:
1592 kx="ECDH";
1593 break;
1594 case SSL_kPSK:
1595 kx="PSK";
1596 break;
1597 case SSL_kSRP:
1598 kx="SRP";
1599 break;
1600 default:
1601 kx="unknown";
1602 }
1603
1604 switch (alg_auth)
1605 {
1606 case SSL_aRSA:
1607 au="RSA";
1608 break;
1609 case SSL_aDSS:
1610 au="DSS";
1611 break;
1612 case SSL_aDH:
1613 au="DH";
1614 break;
1615 case SSL_aKRB5:
1616 au="KRB5";
1617 break;
1618 case SSL_aECDH:
1619 au="ECDH";
1620 break;
1621 case SSL_aNULL:
1622 au="None";
1623 break;
1624 case SSL_aECDSA:
1625 au="ECDSA";
1626 break;
1627 case SSL_aPSK:
1628 au="PSK";
1629 break;
1630 default:
1631 au="unknown";
1632 break;
1633 }
1634
1635 switch (alg_enc)
1636 {
1637 case SSL_DES:
1638 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
1639 break;
1640 case SSL_3DES:
1641 enc="3DES(168)";
1642 break;
1643 case SSL_RC4:
1644 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1645 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1646 break;
1647 case SSL_RC2:
1648 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1649 break;
1650 case SSL_IDEA:
1651 enc="IDEA(128)";
1652 break;
1653 case SSL_eNULL:
1654 enc="None";
1655 break;
1656 case SSL_AES128:
1657 enc="AES(128)";
1658 break;
1659 case SSL_AES256:
1660 enc="AES(256)";
1661 break;
1662 case SSL_AES128GCM:
1663 enc="AESGCM(128)";
1664 break;
1665 case SSL_AES256GCM:
1666 enc="AESGCM(256)";
1667 break;
1668 case SSL_CAMELLIA128:
1669 enc="Camellia(128)";
1670 break;
1671 case SSL_CAMELLIA256:
1672 enc="Camellia(256)";
1673 break;
1674 case SSL_SEED:
1675 enc="SEED(128)";
1676 break;
1677 default:
1678 enc="unknown";
1679 break;
1680 }
1681
1682 switch (alg_mac)
1683 {
1684 case SSL_MD5:
1685 mac="MD5";
1686 break;
1687 case SSL_SHA1:
1688 mac="SHA1";
1689 break;
1690 case SSL_SHA256:
1691 mac="SHA256";
1692 break;
1693 case SSL_SHA384:
1694 mac="SHA384";
1695 break;
1696 case SSL_AEAD:
1697 mac="AEAD";
1698 break;
1699 default:
1700 mac="unknown";
1701 break;
1702 }
1703
1704 if (buf == NULL)
1705 {
1706 len=128;
1707 buf=OPENSSL_malloc(len);
1708 if (buf == NULL) return("OPENSSL_malloc Error");
1709 }
1710 else if (len < 128)
1711 return("Buffer too small");
1712
1713#ifdef KSSL_DEBUG
1714 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl);
1715#else
1716 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str);
1717#endif /* KSSL_DEBUG */
1718 return(buf);
1719 }
1720
1721char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1722 {
1723 int i;
1724
1725 if (c == NULL) return("(NONE)");
1726 i=(int)(c->id>>24L);
1727 if (i == 3)
1728 return("TLSv1/SSLv3");
1729 else if (i == 2)
1730 return("SSLv2");
1731 else
1732 return("unknown");
1733 }
1734
1735/* return the actual cipher being used */
1736const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1737 {
1738 if (c != NULL)
1739 return(c->name);
1740 return("(NONE)");
1741 }
1742
1743/* number of bits for symmetric cipher */
1744int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1745 {
1746 int ret=0;
1747
1748 if (c != NULL)
1749 {
1750 if (alg_bits != NULL) *alg_bits = c->alg_bits;
1751 ret = c->strength_bits;
1752 }
1753 return(ret);
1754 }
1755
1756unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c)
1757 {
1758 return c->id;
1759 }
1760
1761SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1762 {
1763 SSL_COMP *ctmp;
1764 int i,nn;
1765
1766 if ((n == 0) || (sk == NULL)) return(NULL);
1767 nn=sk_SSL_COMP_num(sk);
1768 for (i=0; i<nn; i++)
1769 {
1770 ctmp=sk_SSL_COMP_value(sk,i);
1771 if (ctmp->id == n)
1772 return(ctmp);
1773 }
1774 return(NULL);
1775 }
1776
1777#ifdef OPENSSL_NO_COMP
1778void *SSL_COMP_get_compression_methods(void)
1779 {
1780 return NULL;
1781 }
1782int SSL_COMP_add_compression_method(int id, void *cm)
1783 {
1784 return 1;
1785 }
1786
1787const char *SSL_COMP_get_name(const void *comp)
1788 {
1789 return NULL;
1790 }
1791#else
1792STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1793 {
1794 load_builtin_compressions();
1795 return(ssl_comp_methods);
1796 }
1797
1798int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1799 {
1800 SSL_COMP *comp;
1801
1802 if (cm == NULL || cm->type == NID_undef)
1803 return 1;
1804
1805 /* According to draft-ietf-tls-compression-04.txt, the
1806 compression number ranges should be the following:
1807
1808 0 to 63: methods defined by the IETF
1809 64 to 192: external party methods assigned by IANA
1810 193 to 255: reserved for private use */
1811 if (id < 193 || id > 255)
1812 {
1813 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1814 return 0;
1815 }
1816
1817 MemCheck_off();
1818 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1819 comp->id=id;
1820 comp->method=cm;
1821 load_builtin_compressions();
1822 if (ssl_comp_methods
1823 && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0)
1824 {
1825 OPENSSL_free(comp);
1826 MemCheck_on();
1827 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID);
1828 return(1);
1829 }
1830 else if ((ssl_comp_methods == NULL)
1831 || !sk_SSL_COMP_push(ssl_comp_methods,comp))
1832 {
1833 OPENSSL_free(comp);
1834 MemCheck_on();
1835 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
1836 return(1);
1837 }
1838 else
1839 {
1840 MemCheck_on();
1841 return(0);
1842 }
1843 }
1844
1845const char *SSL_COMP_get_name(const COMP_METHOD *comp)
1846 {
1847 if (comp)
1848 return comp->name;
1849 return NULL;
1850 }
1851
1852#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-20 01:58:18 +0000