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OpenSSL: Update to version 1.0.1e
[tomato.git] / release / src / router / openssl / ssl / ssl_ciph.c
blob0aba8e048c589136715a0f2be593c4bb9a1dae52
1 /* ssl/ssl_ciph.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115 */
116 /* ====================================================================
117 * Copyright 2005 Nokia. All rights reserved.
118 *
119 * The portions of the attached software ("Contribution") is developed by
120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
121 * license.
122 *
123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
125 * support (see RFC 4279) to OpenSSL.
126 *
127 * No patent licenses or other rights except those expressly stated in
128 * the OpenSSL open source license shall be deemed granted or received
129 * expressly, by implication, estoppel, or otherwise.
130 *
131 * No assurances are provided by Nokia that the Contribution does not
132 * infringe the patent or other intellectual property rights of any third
133 * party or that the license provides you with all the necessary rights
134 * to make use of the Contribution.
135 *
136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
140 * OTHERWISE.
141 */
142
143 #include <stdio.h>
144 #include <openssl/objects.h>
145 #ifndef OPENSSL_NO_COMP
146 #include <openssl/comp.h>
147 #endif
148 #ifndef OPENSSL_NO_ENGINE
149 #include <openssl/engine.h>
150 #endif
151 #include "ssl_locl.h"
152
153 #define SSL_ENC_DES_IDX 0
154 #define SSL_ENC_3DES_IDX 1
155 #define SSL_ENC_RC4_IDX 2
156 #define SSL_ENC_RC2_IDX 3
157 #define SSL_ENC_IDEA_IDX 4
158 #define SSL_ENC_NULL_IDX 5
159 #define SSL_ENC_AES128_IDX 6
160 #define SSL_ENC_AES256_IDX 7
161 #define SSL_ENC_CAMELLIA128_IDX 8
162 #define SSL_ENC_CAMELLIA256_IDX 9
163 #define SSL_ENC_GOST89_IDX 10
164 #define SSL_ENC_SEED_IDX 11
165 #define SSL_ENC_AES128GCM_IDX 12
166 #define SSL_ENC_AES256GCM_IDX 13
167 #define SSL_ENC_NUM_IDX 14
168
169
170 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={
171 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL
172 };
173
174 #define SSL_COMP_NULL_IDX 0
175 #define SSL_COMP_ZLIB_IDX 1
176 #define SSL_COMP_NUM_IDX 2
177
178 static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL;
179
180 #define SSL_MD_MD5_IDX 0
181 #define SSL_MD_SHA1_IDX 1
182 #define SSL_MD_GOST94_IDX 2
183 #define SSL_MD_GOST89MAC_IDX 3
184 #define SSL_MD_SHA256_IDX 4
185 #define SSL_MD_SHA384_IDX 5
186 /*Constant SSL_MAX_DIGEST equal to size of digests array should be
187 * defined in the
188 * ssl_locl.h */
189 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
190 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={
191 NULL,NULL,NULL,NULL,NULL,NULL
192 };
193 /* PKEY_TYPE for GOST89MAC is known in advance, but, because
194 * implementation is engine-provided, we'll fill it only if
195 * corresponding EVP_PKEY_METHOD is found
196 */
197 static int ssl_mac_pkey_id[SSL_MD_NUM_IDX]={
198 EVP_PKEY_HMAC,EVP_PKEY_HMAC,EVP_PKEY_HMAC,NID_undef,
199 EVP_PKEY_HMAC,EVP_PKEY_HMAC
200 };
201
202 static int ssl_mac_secret_size[SSL_MD_NUM_IDX]={
203 0,0,0,0,0,0
204 };
205
206 static int ssl_handshake_digest_flag[SSL_MD_NUM_IDX]={
207 SSL_HANDSHAKE_MAC_MD5,SSL_HANDSHAKE_MAC_SHA,
208 SSL_HANDSHAKE_MAC_GOST94, 0, SSL_HANDSHAKE_MAC_SHA256,
209 SSL_HANDSHAKE_MAC_SHA384
210 };
211
212 #define CIPHER_ADD 1
213 #define CIPHER_KILL 2
214 #define CIPHER_DEL 3
215 #define CIPHER_ORD 4
216 #define CIPHER_SPECIAL 5
217
218 typedef struct cipher_order_st
219 {
220 const SSL_CIPHER *cipher;
221 int active;
222 int dead;
223 struct cipher_order_st *next,*prev;
224 } CIPHER_ORDER;
225
226 static const SSL_CIPHER cipher_aliases[]={
227 /* "ALL" doesn't include eNULL (must be specifically enabled) */
228 {0,SSL_TXT_ALL,0, 0,0,~SSL_eNULL,0,0,0,0,0,0},
229 /* "COMPLEMENTOFALL" */
230 {0,SSL_TXT_CMPALL,0, 0,0,SSL_eNULL,0,0,0,0,0,0},
231
232 /* "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in ALL!) */
233 {0,SSL_TXT_CMPDEF,0, SSL_kEDH|SSL_kEECDH,SSL_aNULL,~SSL_eNULL,0,0,0,0,0,0},
234
235 /* key exchange aliases
236 * (some of those using only a single bit here combine
237 * multiple key exchange algs according to the RFCs,
238 * e.g. kEDH combines DHE_DSS and DHE_RSA) */
239 {0,SSL_TXT_kRSA,0, SSL_kRSA, 0,0,0,0,0,0,0,0},
240
241 {0,SSL_TXT_kDHr,0, SSL_kDHr, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
242 {0,SSL_TXT_kDHd,0, SSL_kDHd, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
243 {0,SSL_TXT_kDH,0, SSL_kDHr|SSL_kDHd,0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
244 {0,SSL_TXT_kEDH,0, SSL_kEDH, 0,0,0,0,0,0,0,0},
245 {0,SSL_TXT_DH,0, SSL_kDHr|SSL_kDHd|SSL_kEDH,0,0,0,0,0,0,0,0},
246
247 {0,SSL_TXT_kKRB5,0, SSL_kKRB5, 0,0,0,0,0,0,0,0},
248
249 {0,SSL_TXT_kECDHr,0, SSL_kECDHr,0,0,0,0,0,0,0,0},
250 {0,SSL_TXT_kECDHe,0, SSL_kECDHe,0,0,0,0,0,0,0,0},
251 {0,SSL_TXT_kECDH,0, SSL_kECDHr|SSL_kECDHe,0,0,0,0,0,0,0,0},
252 {0,SSL_TXT_kEECDH,0, SSL_kEECDH,0,0,0,0,0,0,0,0},
253 {0,SSL_TXT_ECDH,0, SSL_kECDHr|SSL_kECDHe|SSL_kEECDH,0,0,0,0,0,0,0,0},
254
255 {0,SSL_TXT_kPSK,0, SSL_kPSK, 0,0,0,0,0,0,0,0},
256 {0,SSL_TXT_kSRP,0, SSL_kSRP, 0,0,0,0,0,0,0,0},
257 {0,SSL_TXT_kGOST,0, SSL_kGOST,0,0,0,0,0,0,0,0},
258
259 /* server authentication aliases */
260 {0,SSL_TXT_aRSA,0, 0,SSL_aRSA, 0,0,0,0,0,0,0},
261 {0,SSL_TXT_aDSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0},
262 {0,SSL_TXT_DSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0},
263 {0,SSL_TXT_aKRB5,0, 0,SSL_aKRB5, 0,0,0,0,0,0,0},
264 {0,SSL_TXT_aNULL,0, 0,SSL_aNULL, 0,0,0,0,0,0,0},
265 {0,SSL_TXT_aDH,0, 0,SSL_aDH, 0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
266 {0,SSL_TXT_aECDH,0, 0,SSL_aECDH, 0,0,0,0,0,0,0},
267 {0,SSL_TXT_aECDSA,0, 0,SSL_aECDSA,0,0,0,0,0,0,0},
268 {0,SSL_TXT_ECDSA,0, 0,SSL_aECDSA, 0,0,0,0,0,0,0},
269 {0,SSL_TXT_aPSK,0, 0,SSL_aPSK, 0,0,0,0,0,0,0},
270 {0,SSL_TXT_aGOST94,0,0,SSL_aGOST94,0,0,0,0,0,0,0},
271 {0,SSL_TXT_aGOST01,0,0,SSL_aGOST01,0,0,0,0,0,0,0},
272 {0,SSL_TXT_aGOST,0,0,SSL_aGOST94|SSL_aGOST01,0,0,0,0,0,0,0},
273
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 {0,SSL_TXT_TLSV1_2,0, 0,0,0,0,SSL_TLSV1_2, 0,0,0,0},
316
317 /* export flag */
318 {0,SSL_TXT_EXP,0, 0,0,0,0,0,SSL_EXPORT,0,0,0},
319 {0,SSL_TXT_EXPORT,0, 0,0,0,0,0,SSL_EXPORT,0,0,0},
320
321 /* strength classes */
322 {0,SSL_TXT_EXP40,0, 0,0,0,0,0,SSL_EXP40, 0,0,0},
323 {0,SSL_TXT_EXP56,0, 0,0,0,0,0,SSL_EXP56, 0,0,0},
324 {0,SSL_TXT_LOW,0, 0,0,0,0,0,SSL_LOW, 0,0,0},
325 {0,SSL_TXT_MEDIUM,0, 0,0,0,0,0,SSL_MEDIUM,0,0,0},
326 {0,SSL_TXT_HIGH,0, 0,0,0,0,0,SSL_HIGH, 0,0,0},
327 /* FIPS 140-2 approved ciphersuite */
328 {0,SSL_TXT_FIPS,0, 0,0,~SSL_eNULL,0,0,SSL_FIPS, 0,0,0},
329 };
330 /* Search for public key algorithm with given name and
331 * return its pkey_id if it is available. Otherwise return 0
332 */
333 #ifdef OPENSSL_NO_ENGINE
334
335 static int get_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 {
342 EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth);
343 }
344 return pkey_id;
345 }
346
347 #else
348
349 static int get_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 {
357 EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth);
358 }
359 if (tmpeng) ENGINE_finish(tmpeng);
360 return pkey_id;
361 }
362
363 #endif
364
365 void ssl_load_ciphers(void)
366 {
367 ssl_cipher_methods[SSL_ENC_DES_IDX]=
368 EVP_get_cipherbyname(SN_des_cbc);
369 ssl_cipher_methods[SSL_ENC_3DES_IDX]=
370 EVP_get_cipherbyname(SN_des_ede3_cbc);
371 ssl_cipher_methods[SSL_ENC_RC4_IDX]=
372 EVP_get_cipherbyname(SN_rc4);
373 ssl_cipher_methods[SSL_ENC_RC2_IDX]=
374 EVP_get_cipherbyname(SN_rc2_cbc);
375 #ifndef OPENSSL_NO_IDEA
376 ssl_cipher_methods[SSL_ENC_IDEA_IDX]=
377 EVP_get_cipherbyname(SN_idea_cbc);
378 #else
379 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL;
380 #endif
381 ssl_cipher_methods[SSL_ENC_AES128_IDX]=
382 EVP_get_cipherbyname(SN_aes_128_cbc);
383 ssl_cipher_methods[SSL_ENC_AES256_IDX]=
384 EVP_get_cipherbyname(SN_aes_256_cbc);
385 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]=
386 EVP_get_cipherbyname(SN_camellia_128_cbc);
387 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]=
388 EVP_get_cipherbyname(SN_camellia_256_cbc);
389 ssl_cipher_methods[SSL_ENC_GOST89_IDX]=
390 EVP_get_cipherbyname(SN_gost89_cnt);
391 ssl_cipher_methods[SSL_ENC_SEED_IDX]=
392 EVP_get_cipherbyname(SN_seed_cbc);
393
394 ssl_cipher_methods[SSL_ENC_AES128GCM_IDX]=
395 EVP_get_cipherbyname(SN_aes_128_gcm);
396 ssl_cipher_methods[SSL_ENC_AES256GCM_IDX]=
397 EVP_get_cipherbyname(SN_aes_256_gcm);
398
399 ssl_digest_methods[SSL_MD_MD5_IDX]=
400 EVP_get_digestbyname(SN_md5);
401 ssl_mac_secret_size[SSL_MD_MD5_IDX]=
402 EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]);
403 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0);
404 ssl_digest_methods[SSL_MD_SHA1_IDX]=
405 EVP_get_digestbyname(SN_sha1);
406 ssl_mac_secret_size[SSL_MD_SHA1_IDX]=
407 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]);
408 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0);
409 ssl_digest_methods[SSL_MD_GOST94_IDX]=
410 EVP_get_digestbyname(SN_id_GostR3411_94);
411 if (ssl_digest_methods[SSL_MD_GOST94_IDX])
412 {
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
435 static int sk_comp_cmp(const SSL_COMP * const *a,
436 const SSL_COMP * const *b)
437 {
438 return((*a)->id-(*b)->id);
439 }
440
441 static void load_builtin_compressions(void)
442 {
443 int got_write_lock = 0;
444
445 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
446 if (ssl_comp_methods == NULL)
447 {
448 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
449 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
450 got_write_lock = 1;
451
452 if (ssl_comp_methods == NULL)
453 {
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 {
460 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
461 if (comp != NULL)
462 {
463 comp->method=COMP_zlib();
464 if (comp->method
465 && comp->method->type == NID_undef)
466 OPENSSL_free(comp);
467 else
468 {
469 comp->id=SSL_COMP_ZLIB_IDX;
470 comp->name=comp->method->name;
471 sk_SSL_COMP_push(ssl_comp_methods,comp);
472 }
473 }
474 sk_SSL_COMP_sort(ssl_comp_methods);
475 }
476 MemCheck_on();
477 }
478 }
479
480 if (got_write_lock)
481 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
482 else
483 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
484 }
485 #endif
486
487 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
488 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size,SSL_COMP **comp)
489 {
490 int i;
491 const SSL_CIPHER *c;
492
493 c=s->cipher;
494 if (c == NULL) return(0);
495 if (comp != NULL)
496 {
497 SSL_COMP ctmp;
498 #ifndef OPENSSL_NO_COMP
499 load_builtin_compressions();
500 #endif
501
502 *comp=NULL;
503 ctmp.id=s->compress_meth;
504 if (ssl_comp_methods != NULL)
505 {
506 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
507 if (i >= 0)
508 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
509 else
510 *comp=NULL;
511 }
512 }
513
514 if ((enc == NULL) || (md == NULL)) return(0);
515
516 switch (c->algorithm_enc)
517 {
518 case SSL_DES:
519 i=SSL_ENC_DES_IDX;
520 break;
521 case SSL_3DES:
522 i=SSL_ENC_3DES_IDX;
523 break;
524 case SSL_RC4:
525 i=SSL_ENC_RC4_IDX;
526 break;
527 case SSL_RC2:
528 i=SSL_ENC_RC2_IDX;
529 break;
530 case SSL_IDEA:
531 i=SSL_ENC_IDEA_IDX;
532 break;
533 case SSL_eNULL:
534 i=SSL_ENC_NULL_IDX;
535 break;
536 case SSL_AES128:
537 i=SSL_ENC_AES128_IDX;
538 break;
539 case SSL_AES256:
540 i=SSL_ENC_AES256_IDX;
541 break;
542 case SSL_CAMELLIA128:
543 i=SSL_ENC_CAMELLIA128_IDX;
544 break;
545 case SSL_CAMELLIA256:
546 i=SSL_ENC_CAMELLIA256_IDX;
547 break;
548 case SSL_eGOST2814789CNT:
549 i=SSL_ENC_GOST89_IDX;
550 break;
551 case SSL_SEED:
552 i=SSL_ENC_SEED_IDX;
553 break;
554 case SSL_AES128GCM:
555 i=SSL_ENC_AES128GCM_IDX;
556 break;
557 case SSL_AES256GCM:
558 i=SSL_ENC_AES256GCM_IDX;
559 break;
560 default:
561 i= -1;
562 break;
563 }
564
565 if ((i < 0) || (i > SSL_ENC_NUM_IDX))
566 *enc=NULL;
567 else
568 {
569 if (i == SSL_ENC_NULL_IDX)
570 *enc=EVP_enc_null();
571 else
572 *enc=ssl_cipher_methods[i];
573 }
574
575 switch (c->algorithm_mac)
576 {
577 case SSL_MD5:
578 i=SSL_MD_MD5_IDX;
579 break;
580 case SSL_SHA1:
581 i=SSL_MD_SHA1_IDX;
582 break;
583 case SSL_SHA256:
584 i=SSL_MD_SHA256_IDX;
585 break;
586 case SSL_SHA384:
587 i=SSL_MD_SHA384_IDX;
588 break;
589 case SSL_GOST94:
590 i = SSL_MD_GOST94_IDX;
591 break;
592 case SSL_GOST89MAC:
593 i = SSL_MD_GOST89MAC_IDX;
594 break;
595 default:
596 i= -1;
597 break;
598 }
599 if ((i < 0) || (i > SSL_MD_NUM_IDX))
600 {
601 *md=NULL;
602 if (mac_pkey_type!=NULL) *mac_pkey_type = NID_undef;
603 if (mac_secret_size!=NULL) *mac_secret_size = 0;
604 if (c->algorithm_mac == SSL_AEAD)
605 mac_pkey_type = NULL;
606 }
607 else
608 {
609 *md=ssl_digest_methods[i];
610 if (mac_pkey_type!=NULL) *mac_pkey_type = ssl_mac_pkey_id[i];
611 if (mac_secret_size!=NULL) *mac_secret_size = ssl_mac_secret_size[i];
612 }
613
614 if ((*enc != NULL) &&
615 (*md != NULL || (EVP_CIPHER_flags(*enc)&EVP_CIPH_FLAG_AEAD_CIPHER)) &&
616 (!mac_pkey_type||*mac_pkey_type != NID_undef))
617 {
618 const EVP_CIPHER *evp;
619
620 if (s->ssl_version>>8 != TLS1_VERSION_MAJOR ||
621 s->ssl_version < TLS1_VERSION)
622 return 1;
623
624 #ifdef OPENSSL_FIPS
625 if (FIPS_mode())
626 return 1;
627 #endif
628
629 if (c->algorithm_enc == SSL_RC4 &&
630 c->algorithm_mac == SSL_MD5 &&
631 (evp=EVP_get_cipherbyname("RC4-HMAC-MD5")))
632 *enc = evp, *md = NULL;
633 else if (c->algorithm_enc == SSL_AES128 &&
634 c->algorithm_mac == SSL_SHA1 &&
635 (evp=EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
636 *enc = evp, *md = NULL;
637 else if (c->algorithm_enc == SSL_AES256 &&
638 c->algorithm_mac == SSL_SHA1 &&
639 (evp=EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
640 *enc = evp, *md = NULL;
641 return(1);
642 }
643 else
644 return(0);
645 }
646
647 int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md)
648 {
649 if (idx <0||idx>=SSL_MD_NUM_IDX)
650 {
651 return 0;
652 }
653 *mask = ssl_handshake_digest_flag[idx];
654 if (*mask)
655 *md = ssl_digest_methods[idx];
656 else
657 *md = NULL;
658 return 1;
659 }
660
661 #define ITEM_SEP(a) \
662 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
663
664 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
665 CIPHER_ORDER **tail)
666 {
667 if (curr == *tail) return;
668 if (curr == *head)
669 *head=curr->next;
670 if (curr->prev != NULL)
671 curr->prev->next=curr->next;
672 if (curr->next != NULL)
673 curr->next->prev=curr->prev;
674 (*tail)->next=curr;
675 curr->prev= *tail;
676 curr->next=NULL;
677 *tail=curr;
678 }
679
680 static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
681 CIPHER_ORDER **tail)
682 {
683 if (curr == *head) return;
684 if (curr == *tail)
685 *tail=curr->prev;
686 if (curr->next != NULL)
687 curr->next->prev=curr->prev;
688 if (curr->prev != NULL)
689 curr->prev->next=curr->next;
690 (*head)->prev=curr;
691 curr->next= *head;
692 curr->prev=NULL;
693 *head=curr;
694 }
695
696 static void ssl_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
776 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
777 int num_of_ciphers,
778 unsigned long disabled_mkey, unsigned long disabled_auth,
779 unsigned long disabled_enc, unsigned long disabled_mac,
780 unsigned long disabled_ssl,
781 CIPHER_ORDER *co_list,
782 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
783 {
784 int i, co_list_num;
785 const SSL_CIPHER *c;
786
787 /*
788 * We have num_of_ciphers descriptions compiled in, depending on the
789 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
790 * These will later be sorted in a linked list with at most num
791 * entries.
792 */
793
794 /* Get the initial list of ciphers */
795 co_list_num = 0; /* actual count of ciphers */
796 for (i = 0; i < num_of_ciphers; i++)
797 {
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 {
810 co_list[co_list_num].cipher = c;
811 co_list[co_list_num].next = NULL;
812 co_list[co_list_num].prev = NULL;
813 co_list[co_list_num].active = 0;
814 co_list_num++;
815 #ifdef KSSL_DEBUG
816 printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth);
817 #endif /* KSSL_DEBUG */
818 /*
819 if (!sk_push(ca_list,(char *)c)) goto err;
820 */
821 }
822 }
823
824 /*
825 * Prepare linked list from list entries
826 */
827 if (co_list_num > 0)
828 {
829 co_list[0].prev = NULL;
830
831 if (co_list_num > 1)
832 {
833 co_list[0].next = &co_list[1];
834
835 for (i = 1; i < co_list_num - 1; i++)
836 {
837 co_list[i].prev = &co_list[i - 1];
838 co_list[i].next = &co_list[i + 1];
839 }
840
841 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
842 }
843
844 co_list[co_list_num - 1].next = NULL;
845
846 *head_p = &co_list[0];
847 *tail_p = &co_list[co_list_num - 1];
848 }
849 }
850
851 static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list,
852 int num_of_group_aliases,
853 unsigned long disabled_mkey, unsigned long disabled_auth,
854 unsigned long disabled_enc, unsigned long disabled_mac,
855 unsigned long disabled_ssl,
856 CIPHER_ORDER *head)
857 {
858 CIPHER_ORDER *ciph_curr;
859 const SSL_CIPHER **ca_curr;
860 int i;
861 unsigned long mask_mkey = ~disabled_mkey;
862 unsigned long mask_auth = ~disabled_auth;
863 unsigned long mask_enc = ~disabled_enc;
864 unsigned long mask_mac = ~disabled_mac;
865 unsigned long mask_ssl = ~disabled_ssl;
866
867 /*
868 * First, add the real ciphers as already collected
869 */
870 ciph_curr = head;
871 ca_curr = ca_list;
872 while (ciph_curr != NULL)
873 {
874 *ca_curr = ciph_curr->cipher;
875 ca_curr++;
876 ciph_curr = ciph_curr->next;
877 }
878
879 /*
880 * Now we add the available ones from the cipher_aliases[] table.
881 * They represent either one or more algorithms, some of which
882 * in any affected category must be supported (set in enabled_mask),
883 * or represent a cipher strength value (will be added in any case because algorithms=0).
884 */
885 for (i = 0; i < num_of_group_aliases; i++)
886 {
887 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey;
888 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth;
889 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc;
890 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac;
891 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl;
892
893 if (algorithm_mkey)
894 if ((algorithm_mkey & mask_mkey) == 0)
895 continue;
896
897 if (algorithm_auth)
898 if ((algorithm_auth & mask_auth) == 0)
899 continue;
900
901 if (algorithm_enc)
902 if ((algorithm_enc & mask_enc) == 0)
903 continue;
904
905 if (algorithm_mac)
906 if ((algorithm_mac & mask_mac) == 0)
907 continue;
908
909 if (algorithm_ssl)
910 if ((algorithm_ssl & mask_ssl) == 0)
911 continue;
912
913 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
914 ca_curr++;
915 }
916
917 *ca_curr = NULL; /* end of list */
918 }
919
920 static void ssl_cipher_apply_rule(unsigned long cipher_id,
921 unsigned long alg_mkey, unsigned long alg_auth,
922 unsigned long alg_enc, unsigned long alg_mac,
923 unsigned long alg_ssl,
924 unsigned long algo_strength,
925 int rule, int strength_bits,
926 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
927 {
928 CIPHER_ORDER *head, *tail, *curr, *curr2, *last;
929 const SSL_CIPHER *cp;
930 int reverse = 0;
931
932 #ifdef CIPHER_DEBUG
933 printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
934 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits);
935 #endif
936
937 if (rule == CIPHER_DEL)
938 reverse = 1; /* needed to maintain sorting between currently deleted ciphers */
939
940 head = *head_p;
941 tail = *tail_p;
942
943 if (reverse)
944 {
945 curr = tail;
946 last = head;
947 }
948 else
949 {
950 curr = head;
951 last = tail;
952 }
953
954 curr2 = curr;
955 for (;;)
956 {
957 if ((curr == NULL) || (curr == last)) break;
958 curr = curr2;
959 curr2 = reverse ? curr->prev : curr->next;
960
961 cp = curr->cipher;
962
963 /*
964 * Selection criteria is either the value of strength_bits
965 * or the algorithms used.
966 */
967 if (strength_bits >= 0)
968 {
969 if (strength_bits != cp->strength_bits)
970 continue;
971 }
972 else
973 {
974 #ifdef CIPHER_DEBUG
975 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);
976 #endif
977
978 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
979 continue;
980 if (alg_auth && !(alg_auth & cp->algorithm_auth))
981 continue;
982 if (alg_enc && !(alg_enc & cp->algorithm_enc))
983 continue;
984 if (alg_mac && !(alg_mac & cp->algorithm_mac))
985 continue;
986 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
987 continue;
988 if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength))
989 continue;
990 if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength))
991 continue;
992 }
993
994 #ifdef CIPHER_DEBUG
995 printf("Action = %d\n", rule);
996 #endif
997
998 /* add the cipher if it has not been added yet. */
999 if (rule == CIPHER_ADD)
1000 {
1001 /* reverse == 0 */
1002 if (!curr->active)
1003 {
1004 ll_append_tail(&head, curr, &tail);
1005 curr->active = 1;
1006 }
1007 }
1008 /* Move the added cipher to this location */
1009 else if (rule == CIPHER_ORD)
1010 {
1011 /* reverse == 0 */
1012 if (curr->active)
1013 {
1014 ll_append_tail(&head, curr, &tail);
1015 }
1016 }
1017 else if (rule == CIPHER_DEL)
1018 {
1019 /* reverse == 1 */
1020 if (curr->active)
1021 {
1022 /* most recently deleted ciphersuites get best positions
1023 * for any future CIPHER_ADD (note that the CIPHER_DEL loop
1024 * works in reverse to maintain the order) */
1025 ll_append_head(&head, curr, &tail);
1026 curr->active = 0;
1027 }
1028 }
1029 else if (rule == CIPHER_KILL)
1030 {
1031 /* reverse == 0 */
1032 if (head == curr)
1033 head = curr->next;
1034 else
1035 curr->prev->next = curr->next;
1036 if (tail == curr)
1037 tail = curr->prev;
1038 curr->active = 0;
1039 if (curr->next != NULL)
1040 curr->next->prev = curr->prev;
1041 if (curr->prev != NULL)
1042 curr->prev->next = curr->next;
1043 curr->next = NULL;
1044 curr->prev = NULL;
1045 }
1046 }
1047
1048 *head_p = head;
1049 *tail_p = tail;
1050 }
1051
1052 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
1053 CIPHER_ORDER **tail_p)
1054 {
1055 int max_strength_bits, i, *number_uses;
1056 CIPHER_ORDER *curr;
1057
1058 /*
1059 * This routine sorts the ciphers with descending strength. The sorting
1060 * must keep the pre-sorted sequence, so we apply the normal sorting
1061 * routine as '+' movement to the end of the list.
1062 */
1063 max_strength_bits = 0;
1064 curr = *head_p;
1065 while (curr != NULL)
1066 {
1067 if (curr->active &&
1068 (curr->cipher->strength_bits > max_strength_bits))
1069 max_strength_bits = curr->cipher->strength_bits;
1070 curr = curr->next;
1071 }
1072
1073 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
1074 if (!number_uses)
1075 {
1076 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE);
1077 return(0);
1078 }
1079 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
1080
1081 /*
1082 * Now find the strength_bits values actually used
1083 */
1084 curr = *head_p;
1085 while (curr != NULL)
1086 {
1087 if (curr->active)
1088 number_uses[curr->cipher->strength_bits]++;
1089 curr = curr->next;
1090 }
1091 /*
1092 * Go through the list of used strength_bits values in descending
1093 * order.
1094 */
1095 for (i = max_strength_bits; i >= 0; i--)
1096 if (number_uses[i] > 0)
1097 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p);
1098
1099 OPENSSL_free(number_uses);
1100 return(1);
1101 }
1102
1103 static int ssl_cipher_process_rulestr(const char *rule_str,
1104 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p,
1105 const SSL_CIPHER **ca_list)
1106 {
1107 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength;
1108 const char *l, *buf;
1109 int j, multi, found, rule, retval, ok, buflen;
1110 unsigned long cipher_id = 0;
1111 char ch;
1112
1113 retval = 1;
1114 l = rule_str;
1115 for (;;)
1116 {
1117 ch = *l;
1118
1119 if (ch == '\0')
1120 break; /* done */
1121 if (ch == '-')
1122 { rule = CIPHER_DEL; l++; }
1123 else if (ch == '+')
1124 { rule = CIPHER_ORD; l++; }
1125 else if (ch == '!')
1126 { rule = CIPHER_KILL; l++; }
1127 else if (ch == '@')
1128 { rule = CIPHER_SPECIAL; l++; }
1129 else
1130 { rule = CIPHER_ADD; }
1131
1132 if (ITEM_SEP(ch))
1133 {
1134 l++;
1135 continue;
1136 }
1137
1138 alg_mkey = 0;
1139 alg_auth = 0;
1140 alg_enc = 0;
1141 alg_mac = 0;
1142 alg_ssl = 0;
1143 algo_strength = 0;
1144
1145 for (;;)
1146 {
1147 ch = *l;
1148 buf = l;
1149 buflen = 0;
1150 #ifndef CHARSET_EBCDIC
1151 while ( ((ch >= 'A') && (ch <= 'Z')) ||
1152 ((ch >= '0') && (ch <= '9')) ||
1153 ((ch >= 'a') && (ch <= 'z')) ||
1154 (ch == '-') || (ch == '.'))
1155 #else
1156 while ( isalnum(ch) || (ch == '-') || (ch == '.'))
1157 #endif
1158 {
1159 ch = *(++l);
1160 buflen++;
1161 }
1162
1163 if (buflen == 0)
1164 {
1165 /*
1166 * We hit something we cannot deal with,
1167 * it is no command or separator nor
1168 * alphanumeric, so we call this an error.
1169 */
1170 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1171 SSL_R_INVALID_COMMAND);
1172 retval = found = 0;
1173 l++;
1174 break;
1175 }
1176
1177 if (rule == CIPHER_SPECIAL)
1178 {
1179 found = 0; /* unused -- avoid compiler warning */
1180 break; /* special treatment */
1181 }
1182
1183 /* check for multi-part specification */
1184 if (ch == '+')
1185 {
1186 multi=1;
1187 l++;
1188 }
1189 else
1190 multi=0;
1191
1192 /*
1193 * Now search for the cipher alias in the ca_list. Be careful
1194 * with the strncmp, because the "buflen" limitation
1195 * will make the rule "ADH:SOME" and the cipher
1196 * "ADH-MY-CIPHER" look like a match for buflen=3.
1197 * So additionally check whether the cipher name found
1198 * has the correct length. We can save a strlen() call:
1199 * just checking for the '\0' at the right place is
1200 * sufficient, we have to strncmp() anyway. (We cannot
1201 * use strcmp(), because buf is not '\0' terminated.)
1202 */
1203 j = found = 0;
1204 cipher_id = 0;
1205 while (ca_list[j])
1206 {
1207 if (!strncmp(buf, ca_list[j]->name, buflen) &&
1208 (ca_list[j]->name[buflen] == '\0'))
1209 {
1210 found = 1;
1211 break;
1212 }
1213 else
1214 j++;
1215 }
1216
1217 if (!found)
1218 break; /* ignore this entry */
1219
1220 if (ca_list[j]->algorithm_mkey)
1221 {
1222 if (alg_mkey)
1223 {
1224 alg_mkey &= ca_list[j]->algorithm_mkey;
1225 if (!alg_mkey) { found = 0; break; }
1226 }
1227 else
1228 alg_mkey = ca_list[j]->algorithm_mkey;
1229 }
1230
1231 if (ca_list[j]->algorithm_auth)
1232 {
1233 if (alg_auth)
1234 {
1235 alg_auth &= ca_list[j]->algorithm_auth;
1236 if (!alg_auth) { found = 0; break; }
1237 }
1238 else
1239 alg_auth = ca_list[j]->algorithm_auth;
1240 }
1241
1242 if (ca_list[j]->algorithm_enc)
1243 {
1244 if (alg_enc)
1245 {
1246 alg_enc &= ca_list[j]->algorithm_enc;
1247 if (!alg_enc) { found = 0; break; }
1248 }
1249 else
1250 alg_enc = ca_list[j]->algorithm_enc;
1251 }
1252
1253 if (ca_list[j]->algorithm_mac)
1254 {
1255 if (alg_mac)
1256 {
1257 alg_mac &= ca_list[j]->algorithm_mac;
1258 if (!alg_mac) { found = 0; break; }
1259 }
1260 else
1261 alg_mac = ca_list[j]->algorithm_mac;
1262 }
1263
1264 if (ca_list[j]->algo_strength & SSL_EXP_MASK)
1265 {
1266 if (algo_strength & SSL_EXP_MASK)
1267 {
1268 algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK;
1269 if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; }
1270 }
1271 else
1272 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK;
1273 }
1274
1275 if (ca_list[j]->algo_strength & SSL_STRONG_MASK)
1276 {
1277 if (algo_strength & SSL_STRONG_MASK)
1278 {
1279 algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK;
1280 if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; }
1281 }
1282 else
1283 algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK;
1284 }
1285
1286 if (ca_list[j]->valid)
1287 {
1288 /* explicit ciphersuite found; its protocol version
1289 * does not become part of the search pattern!*/
1290
1291 cipher_id = ca_list[j]->id;
1292 }
1293 else
1294 {
1295 /* not an explicit ciphersuite; only in this case, the
1296 * protocol version is considered part of the search pattern */
1297
1298 if (ca_list[j]->algorithm_ssl)
1299 {
1300 if (alg_ssl)
1301 {
1302 alg_ssl &= ca_list[j]->algorithm_ssl;
1303 if (!alg_ssl) { found = 0; break; }
1304 }
1305 else
1306 alg_ssl = ca_list[j]->algorithm_ssl;
1307 }
1308 }
1309
1310 if (!multi) break;
1311 }
1312
1313 /*
1314 * Ok, we have the rule, now apply it
1315 */
1316 if (rule == CIPHER_SPECIAL)
1317 { /* special command */
1318 ok = 0;
1319 if ((buflen == 8) &&
1320 !strncmp(buf, "STRENGTH", 8))
1321 ok = ssl_cipher_strength_sort(head_p, tail_p);
1322 else
1323 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1324 SSL_R_INVALID_COMMAND);
1325 if (ok == 0)
1326 retval = 0;
1327 /*
1328 * We do not support any "multi" options
1329 * together with "@", so throw away the
1330 * rest of the command, if any left, until
1331 * end or ':' is found.
1332 */
1333 while ((*l != '\0') && !ITEM_SEP(*l))
1334 l++;
1335 }
1336 else if (found)
1337 {
1338 ssl_cipher_apply_rule(cipher_id,
1339 alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength,
1340 rule, -1, head_p, tail_p);
1341 }
1342 else
1343 {
1344 while ((*l != '\0') && !ITEM_SEP(*l))
1345 l++;
1346 }
1347 if (*l == '\0') break; /* done */
1348 }
1349
1350 return(retval);
1351 }
1352
1353 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
1354 STACK_OF(SSL_CIPHER) **cipher_list,
1355 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
1356 const char *rule_str)
1357 {
1358 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1359 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl;
1360 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1361 const char *rule_p;
1362 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1363 const SSL_CIPHER **ca_list = NULL;
1364
1365 /*
1366 * Return with error if nothing to do.
1367 */
1368 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1369 return NULL;
1370
1371 /*
1372 * To reduce the work to do we only want to process the compiled
1373 * in algorithms, so we first get the mask of disabled ciphers.
1374 */
1375 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl);
1376
1377 /*
1378 * Now we have to collect the available ciphers from the compiled
1379 * in ciphers. We cannot get more than the number compiled in, so
1380 * it is used for allocation.
1381 */
1382 num_of_ciphers = ssl_method->num_ciphers();
1383 #ifdef KSSL_DEBUG
1384 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
1385 #endif /* KSSL_DEBUG */
1386 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
1387 if (co_list == NULL)
1388 {
1389 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1390 return(NULL); /* Failure */
1391 }
1392
1393 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1394 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl,
1395 co_list, &head, &tail);
1396
1397
1398 /* Now arrange all ciphers by preference: */
1399
1400 /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */
1401 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1402 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1403
1404 /* AES is our preferred symmetric cipher */
1405 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1406
1407 /* Temporarily enable everything else for sorting */
1408 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1409
1410 /* Low priority for MD5 */
1411 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail);
1412
1413 /* Move anonymous ciphers to the end. Usually, these will remain disabled.
1414 * (For applications that allow them, they aren't too bad, but we prefer
1415 * authenticated ciphers.) */
1416 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1417
1418 /* Move ciphers without forward secrecy to the end */
1419 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1420 /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */
1421 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1422 ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1423 ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1424
1425 /* RC4 is sort-of broken -- move the the end */
1426 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1427
1428 /* Now sort by symmetric encryption strength. The above ordering remains
1429 * in force within each class */
1430 if (!ssl_cipher_strength_sort(&head, &tail))
1431 {
1432 OPENSSL_free(co_list);
1433 return NULL;
1434 }
1435
1436 /* Now disable everything (maintaining the ordering!) */
1437 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1438
1439
1440 /*
1441 * We also need cipher aliases for selecting based on the rule_str.
1442 * There might be two types of entries in the rule_str: 1) names
1443 * of ciphers themselves 2) aliases for groups of ciphers.
1444 * For 1) we need the available ciphers and for 2) the cipher
1445 * groups of cipher_aliases added together in one list (otherwise
1446 * we would be happy with just the cipher_aliases table).
1447 */
1448 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
1449 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1450 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
1451 if (ca_list == NULL)
1452 {
1453 OPENSSL_free(co_list);
1454 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1455 return(NULL); /* Failure */
1456 }
1457 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1458 disabled_mkey, disabled_auth, disabled_enc,
1459 disabled_mac, disabled_ssl, head);
1460
1461 /*
1462 * If the rule_string begins with DEFAULT, apply the default rule
1463 * before using the (possibly available) additional rules.
1464 */
1465 ok = 1;
1466 rule_p = rule_str;
1467 if (strncmp(rule_str,"DEFAULT",7) == 0)
1468 {
1469 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1470 &head, &tail, ca_list);
1471 rule_p += 7;
1472 if (*rule_p == ':')
1473 rule_p++;
1474 }
1475
1476 if (ok && (strlen(rule_p) > 0))
1477 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list);
1478
1479 OPENSSL_free((void *)ca_list); /* Not needed anymore */
1480
1481 if (!ok)
1482 { /* Rule processing failure */
1483 OPENSSL_free(co_list);
1484 return(NULL);
1485 }
1486
1487 /*
1488 * Allocate new "cipherstack" for the result, return with error
1489 * if we cannot get one.
1490 */
1491 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL)
1492 {
1493 OPENSSL_free(co_list);
1494 return(NULL);
1495 }
1496
1497 /*
1498 * The cipher selection for the list is done. The ciphers are added
1499 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1500 */
1501 for (curr = head; curr != NULL; curr = curr->next)
1502 {
1503 #ifdef OPENSSL_FIPS
1504 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS))
1505 #else
1506 if (curr->active)
1507 #endif
1508 {
1509 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1510 #ifdef CIPHER_DEBUG
1511 printf("<%s>\n",curr->cipher->name);
1512 #endif
1513 }
1514 }
1515 OPENSSL_free(co_list); /* Not needed any longer */
1516
1517 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1518 if (tmp_cipher_list == NULL)
1519 {
1520 sk_SSL_CIPHER_free(cipherstack);
1521 return NULL;
1522 }
1523 if (*cipher_list != NULL)
1524 sk_SSL_CIPHER_free(*cipher_list);
1525 *cipher_list = cipherstack;
1526 if (*cipher_list_by_id != NULL)
1527 sk_SSL_CIPHER_free(*cipher_list_by_id);
1528 *cipher_list_by_id = tmp_cipher_list;
1529 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
1530
1531 sk_SSL_CIPHER_sort(*cipher_list_by_id);
1532 return(cipherstack);
1533 }
1534
1535 char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
1536 {
1537 int is_export,pkl,kl;
1538 const char *ver,*exp_str;
1539 const char *kx,*au,*enc,*mac;
1540 unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2;
1541 #ifdef KSSL_DEBUG
1542 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n";
1543 #else
1544 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1545 #endif /* KSSL_DEBUG */
1546
1547 alg_mkey = cipher->algorithm_mkey;
1548 alg_auth = cipher->algorithm_auth;
1549 alg_enc = cipher->algorithm_enc;
1550 alg_mac = cipher->algorithm_mac;
1551 alg_ssl = cipher->algorithm_ssl;
1552
1553 alg2=cipher->algorithm2;
1554
1555 is_export=SSL_C_IS_EXPORT(cipher);
1556 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1557 kl=SSL_C_EXPORT_KEYLENGTH(cipher);
1558 exp_str=is_export?" export":"";
1559
1560 if (alg_ssl & SSL_SSLV2)
1561 ver="SSLv2";
1562 else if (alg_ssl & SSL_SSLV3)
1563 ver="SSLv3";
1564 else if (alg_ssl & SSL_TLSV1_2)
1565 ver="TLSv1.2";
1566 else
1567 ver="unknown";
1568
1569 switch (alg_mkey)
1570 {
1571 case SSL_kRSA:
1572 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1573 break;
1574 case SSL_kDHr:
1575 kx="DH/RSA";
1576 break;
1577 case SSL_kDHd:
1578 kx="DH/DSS";
1579 break;
1580 case SSL_kKRB5:
1581 kx="KRB5";
1582 break;
1583 case SSL_kEDH:
1584 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1585 break;
1586 case SSL_kECDHr:
1587 kx="ECDH/RSA";
1588 break;
1589 case SSL_kECDHe:
1590 kx="ECDH/ECDSA";
1591 break;
1592 case SSL_kEECDH:
1593 kx="ECDH";
1594 break;
1595 case SSL_kPSK:
1596 kx="PSK";
1597 break;
1598 case SSL_kSRP:
1599 kx="SRP";
1600 break;
1601 default:
1602 kx="unknown";
1603 }
1604
1605 switch (alg_auth)
1606 {
1607 case SSL_aRSA:
1608 au="RSA";
1609 break;
1610 case SSL_aDSS:
1611 au="DSS";
1612 break;
1613 case SSL_aDH:
1614 au="DH";
1615 break;
1616 case SSL_aKRB5:
1617 au="KRB5";
1618 break;
1619 case SSL_aECDH:
1620 au="ECDH";
1621 break;
1622 case SSL_aNULL:
1623 au="None";
1624 break;
1625 case SSL_aECDSA:
1626 au="ECDSA";
1627 break;
1628 case SSL_aPSK:
1629 au="PSK";
1630 break;
1631 default:
1632 au="unknown";
1633 break;
1634 }
1635
1636 switch (alg_enc)
1637 {
1638 case SSL_DES:
1639 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
1640 break;
1641 case SSL_3DES:
1642 enc="3DES(168)";
1643 break;
1644 case SSL_RC4:
1645 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1646 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1647 break;
1648 case SSL_RC2:
1649 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1650 break;
1651 case SSL_IDEA:
1652 enc="IDEA(128)";
1653 break;
1654 case SSL_eNULL:
1655 enc="None";
1656 break;
1657 case SSL_AES128:
1658 enc="AES(128)";
1659 break;
1660 case SSL_AES256:
1661 enc="AES(256)";
1662 break;
1663 case SSL_AES128GCM:
1664 enc="AESGCM(128)";
1665 break;
1666 case SSL_AES256GCM:
1667 enc="AESGCM(256)";
1668 break;
1669 case SSL_CAMELLIA128:
1670 enc="Camellia(128)";
1671 break;
1672 case SSL_CAMELLIA256:
1673 enc="Camellia(256)";
1674 break;
1675 case SSL_SEED:
1676 enc="SEED(128)";
1677 break;
1678 default:
1679 enc="unknown";
1680 break;
1681 }
1682
1683 switch (alg_mac)
1684 {
1685 case SSL_MD5:
1686 mac="MD5";
1687 break;
1688 case SSL_SHA1:
1689 mac="SHA1";
1690 break;
1691 case SSL_SHA256:
1692 mac="SHA256";
1693 break;
1694 case SSL_SHA384:
1695 mac="SHA384";
1696 break;
1697 case SSL_AEAD:
1698 mac="AEAD";
1699 break;
1700 default:
1701 mac="unknown";
1702 break;
1703 }
1704
1705 if (buf == NULL)
1706 {
1707 len=128;
1708 buf=OPENSSL_malloc(len);
1709 if (buf == NULL) return("OPENSSL_malloc Error");
1710 }
1711 else if (len < 128)
1712 return("Buffer too small");
1713
1714 #ifdef KSSL_DEBUG
1715 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl);
1716 #else
1717 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str);
1718 #endif /* KSSL_DEBUG */
1719 return(buf);
1720 }
1721
1722 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1723 {
1724 int i;
1725
1726 if (c == NULL) return("(NONE)");
1727 i=(int)(c->id>>24L);
1728 if (i == 3)
1729 return("TLSv1/SSLv3");
1730 else if (i == 2)
1731 return("SSLv2");
1732 else
1733 return("unknown");
1734 }
1735
1736 /* return the actual cipher being used */
1737 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1738 {
1739 if (c != NULL)
1740 return(c->name);
1741 return("(NONE)");
1742 }
1743
1744 /* number of bits for symmetric cipher */
1745 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1746 {
1747 int ret=0;
1748
1749 if (c != NULL)
1750 {
1751 if (alg_bits != NULL) *alg_bits = c->alg_bits;
1752 ret = c->strength_bits;
1753 }
1754 return(ret);
1755 }
1756
1757 unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c)
1758 {
1759 return c->id;
1760 }
1761
1762 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1763 {
1764 SSL_COMP *ctmp;
1765 int i,nn;
1766
1767 if ((n == 0) || (sk == NULL)) return(NULL);
1768 nn=sk_SSL_COMP_num(sk);
1769 for (i=0; i<nn; i++)
1770 {
1771 ctmp=sk_SSL_COMP_value(sk,i);
1772 if (ctmp->id == n)
1773 return(ctmp);
1774 }
1775 return(NULL);
1776 }
1777
1778 #ifdef OPENSSL_NO_COMP
1779 void *SSL_COMP_get_compression_methods(void)
1780 {
1781 return NULL;
1782 }
1783 int SSL_COMP_add_compression_method(int id, void *cm)
1784 {
1785 return 1;
1786 }
1787
1788 const char *SSL_COMP_get_name(const void *comp)
1789 {
1790 return NULL;
1791 }
1792 #else
1793 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1794 {
1795 load_builtin_compressions();
1796 return(ssl_comp_methods);
1797 }
1798
1799 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1800 {
1801 SSL_COMP *comp;
1802
1803 if (cm == NULL || cm->type == NID_undef)
1804 return 1;
1805
1806 /* According to draft-ietf-tls-compression-04.txt, the
1807 compression number ranges should be the following:
1808
1809 0 to 63: methods defined by the IETF
1810 64 to 192: external party methods assigned by IANA
1811 193 to 255: reserved for private use */
1812 if (id < 193 || id > 255)
1813 {
1814 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1815 return 0;
1816 }
1817
1818 MemCheck_off();
1819 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1820 comp->id=id;
1821 comp->method=cm;
1822 load_builtin_compressions();
1823 if (ssl_comp_methods
1824 && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0)
1825 {
1826 OPENSSL_free(comp);
1827 MemCheck_on();
1828 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID);
1829 return(1);
1830 }
1831 else if ((ssl_comp_methods == NULL)
1832 || !sk_SSL_COMP_push(ssl_comp_methods,comp))
1833 {
1834 OPENSSL_free(comp);
1835 MemCheck_on();
1836 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
1837 return(1);
1838 }
1839 else
1840 {
1841 MemCheck_on();
1842 return(0);
1843 }
1844 }
1845
1846 const char *SSL_COMP_get_name(const COMP_METHOD *comp)
1847 {
1848 if (comp)
1849 return comp->name;
1850 return NULL;
1851 }
1852
1853 #endif
Tomato firmware and modifications.