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d02b48c6 | 1 | /* ssl/ssl_ciph.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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. | |
0f113f3e | 8 | * |
d02b48c6 RE |
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). | |
0f113f3e | 15 | * |
d02b48c6 RE |
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. | |
0f113f3e | 22 | * |
d02b48c6 RE |
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 :-). | |
0f113f3e | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 40 | * |
d02b48c6 RE |
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. | |
0f113f3e | 52 | * |
d02b48c6 RE |
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 | */ | |
675f605d | 58 | /* ==================================================================== |
52b8dad8 | 59 | * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. |
675f605d BM |
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 | |
0f113f3e | 66 | * notice, this list of conditions and the following disclaimer. |
675f605d BM |
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 | */ | |
ea262260 BM |
111 | /* ==================================================================== |
112 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
0f113f3e | 113 | * ECC cipher suite support in OpenSSL originally developed by |
ea262260 BM |
114 | * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. |
115 | */ | |
ddac1974 NL |
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 | ||
d02b48c6 | 143 | #include <stdio.h> |
ec577822 | 144 | #include <openssl/objects.h> |
fceac0bc | 145 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 146 | # include <openssl/comp.h> |
fceac0bc | 147 | #endif |
70531c14 | 148 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e | 149 | # include <openssl/engine.h> |
70531c14 | 150 | #endif |
d02b48c6 RE |
151 | #include "ssl_locl.h" |
152 | ||
0f113f3e MC |
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 | |
e75c5a79 DSH |
167 | #define SSL_ENC_AES128CCM_IDX 14 |
168 | #define SSL_ENC_AES256CCM_IDX 15 | |
3d3701ea DSH |
169 | #define SSL_ENC_AES128CCM8_IDX 16 |
170 | #define SSL_ENC_AES256CCM8_IDX 17 | |
171 | #define SSL_ENC_NUM_IDX 18 | |
0f113f3e | 172 | |
98c9ce2f DSH |
173 | /* NB: make sure indices in these tables match values above */ |
174 | ||
175 | typedef struct { | |
176 | unsigned long mask; | |
177 | int nid; | |
178 | } ssl_cipher_table; | |
179 | ||
180 | /* Table of NIDs for each cipher */ | |
181 | static const ssl_cipher_table ssl_cipher_table_cipher[SSL_ENC_NUM_IDX] = { | |
182 | {SSL_DES, NID_des_cbc}, /* SSL_ENC_DES_IDX 0 */ | |
183 | {SSL_3DES, NID_des_ede3_cbc}, /* SSL_ENC_3DES_IDX 1 */ | |
184 | {SSL_RC4, NID_rc4}, /* SSL_ENC_RC4_IDX 2 */ | |
185 | {SSL_RC2, NID_rc2_cbc}, /* SSL_ENC_RC2_IDX 3 */ | |
186 | {SSL_IDEA, NID_idea_cbc}, /* SSL_ENC_IDEA_IDX 4 */ | |
187 | {SSL_eNULL, NID_undef}, /* SSL_ENC_NULL_IDX 5 */ | |
188 | {SSL_AES128, NID_aes_128_cbc}, /* SSL_ENC_AES128_IDX 6 */ | |
189 | {SSL_AES256, NID_aes_256_cbc}, /* SSL_ENC_AES256_IDX 7 */ | |
190 | {SSL_CAMELLIA128, NID_camellia_128_cbc}, /* SSL_ENC_CAMELLIA128_IDX 8 */ | |
191 | {SSL_CAMELLIA256, NID_camellia_256_cbc}, /* SSL_ENC_CAMELLIA256_IDX 9 */ | |
192 | {SSL_eGOST2814789CNT, NID_gost89_cnt}, /* SSL_ENC_GOST89_IDX 10 */ | |
193 | {SSL_SEED, NID_seed_cbc}, /* SSL_ENC_SEED_IDX 11 */ | |
194 | {SSL_AES128GCM, NID_aes_128_gcm}, /* SSL_ENC_AES128GCM_IDX 12 */ | |
e75c5a79 DSH |
195 | {SSL_AES256GCM, NID_aes_256_gcm}, /* SSL_ENC_AES256GCM_IDX 13 */ |
196 | {SSL_AES128CCM, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM_IDX 14 */ | |
3d3701ea DSH |
197 | {SSL_AES256CCM, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM_IDX 15 */ |
198 | {SSL_AES128CCM8, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM8_IDX 16 */ | |
199 | {SSL_AES256CCM8, NID_aes_256_ccm} /* SSL_ENC_AES256CCM8_IDX 17 */ | |
98c9ce2f DSH |
200 | }; |
201 | ||
0f113f3e MC |
202 | static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX] = { |
203 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
204 | NULL, NULL | |
205 | }; | |
206 | ||
207 | #define SSL_COMP_NULL_IDX 0 | |
208 | #define SSL_COMP_ZLIB_IDX 1 | |
209 | #define SSL_COMP_NUM_IDX 2 | |
210 | ||
211 | static STACK_OF(SSL_COMP) *ssl_comp_methods = NULL; | |
212 | ||
213 | #define SSL_MD_MD5_IDX 0 | |
214 | #define SSL_MD_SHA1_IDX 1 | |
b948e2c5 DSH |
215 | #define SSL_MD_GOST94_IDX 2 |
216 | #define SSL_MD_GOST89MAC_IDX 3 | |
7409d7ad | 217 | #define SSL_MD_SHA256_IDX 4 |
d09677ac | 218 | #define SSL_MD_SHA384_IDX 5 |
0f113f3e MC |
219 | /* |
220 | * Constant SSL_MAX_DIGEST equal to size of digests array should be defined | |
221 | * in the ssl_locl.h | |
b948e2c5 | 222 | */ |
98c9ce2f | 223 | |
0f113f3e | 224 | #define SSL_MD_NUM_IDX SSL_MAX_DIGEST |
98c9ce2f DSH |
225 | |
226 | /* NB: make sure indices in this table matches values above */ | |
227 | static const ssl_cipher_table ssl_cipher_table_mac[SSL_MD_NUM_IDX] = { | |
228 | {SSL_MD5, NID_md5}, /* SSL_MD_MD5_IDX 0 */ | |
229 | {SSL_SHA1, NID_sha1}, /* SSL_MD_SHA1_IDX 1 */ | |
230 | {SSL_GOST94, NID_id_GostR3411_94}, /* SSL_MD_GOST94_IDX 2 */ | |
231 | {SSL_GOST89MAC, NID_id_Gost28147_89_MAC}, /* SSL_MD_GOST89MAC_IDX 3 */ | |
232 | {SSL_SHA256, NID_sha256}, /* SSL_MD_SHA256_IDX 4 */ | |
233 | {SSL_SHA384, NID_sha384} /* SSL_MD_SHA384_IDX 5 */ | |
234 | }; | |
235 | ||
0f113f3e MC |
236 | static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX] = { |
237 | NULL, NULL, NULL, NULL, NULL, NULL | |
238 | }; | |
239 | ||
98c9ce2f DSH |
240 | /* Utility function for table lookup */ |
241 | static int ssl_cipher_info_find(const ssl_cipher_table * table, | |
242 | size_t table_cnt, unsigned long mask) | |
243 | { | |
244 | size_t i; | |
245 | for (i = 0; i < table_cnt; i++, table++) { | |
246 | if (table->mask == mask) | |
247 | return i; | |
248 | } | |
249 | return -1; | |
250 | } | |
251 | ||
252 | #define ssl_cipher_info_lookup(table, x) \ | |
b6eb9827 | 253 | ssl_cipher_info_find(table, OSSL_NELEM(table), x) |
98c9ce2f | 254 | |
0f113f3e MC |
255 | /* |
256 | * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation | |
257 | * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is | |
258 | * found | |
259 | */ | |
260 | static int ssl_mac_pkey_id[SSL_MD_NUM_IDX] = { | |
261 | EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef, | |
262 | EVP_PKEY_HMAC, EVP_PKEY_HMAC | |
263 | }; | |
264 | ||
265 | static int ssl_mac_secret_size[SSL_MD_NUM_IDX] = { | |
266 | 0, 0, 0, 0, 0, 0 | |
267 | }; | |
268 | ||
269 | static const int ssl_handshake_digest_flag[SSL_MD_NUM_IDX] = { | |
270 | SSL_HANDSHAKE_MAC_MD5, SSL_HANDSHAKE_MAC_SHA, | |
271 | SSL_HANDSHAKE_MAC_GOST94, 0, SSL_HANDSHAKE_MAC_SHA256, | |
272 | SSL_HANDSHAKE_MAC_SHA384 | |
273 | }; | |
274 | ||
275 | #define CIPHER_ADD 1 | |
276 | #define CIPHER_KILL 2 | |
277 | #define CIPHER_DEL 3 | |
278 | #define CIPHER_ORD 4 | |
279 | #define CIPHER_SPECIAL 5 | |
280 | ||
281 | typedef struct cipher_order_st { | |
282 | const SSL_CIPHER *cipher; | |
283 | int active; | |
284 | int dead; | |
285 | struct cipher_order_st *next, *prev; | |
286 | } CIPHER_ORDER; | |
287 | ||
288 | static const SSL_CIPHER cipher_aliases[] = { | |
289 | /* "ALL" doesn't include eNULL (must be specifically enabled) */ | |
290 | {0, SSL_TXT_ALL, 0, 0, 0, ~SSL_eNULL, 0, 0, 0, 0, 0, 0}, | |
291 | /* "COMPLEMENTOFALL" */ | |
292 | {0, SSL_TXT_CMPALL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0}, | |
293 | ||
294 | /* | |
295 | * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in | |
296 | * ALL!) | |
297 | */ | |
298 | {0, SSL_TXT_CMPDEF, 0, SSL_kDHE | SSL_kECDHE, SSL_aNULL, ~SSL_eNULL, 0, 0, | |
299 | 0, 0, 0, 0}, | |
300 | ||
301 | /* | |
302 | * key exchange aliases (some of those using only a single bit here | |
303 | * combine multiple key exchange algs according to the RFCs, e.g. kDHE | |
304 | * combines DHE_DSS and DHE_RSA) | |
305 | */ | |
306 | {0, SSL_TXT_kRSA, 0, SSL_kRSA, 0, 0, 0, 0, 0, 0, 0, 0}, | |
307 | ||
308 | {0, SSL_TXT_kDHr, 0, SSL_kDHr, 0, 0, 0, 0, 0, 0, 0, 0}, | |
309 | {0, SSL_TXT_kDHd, 0, SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0}, | |
310 | {0, SSL_TXT_kDH, 0, SSL_kDHr | SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0}, | |
311 | {0, SSL_TXT_kEDH, 0, SSL_kDHE, 0, 0, 0, 0, 0, 0, 0, 0}, | |
312 | {0, SSL_TXT_kDHE, 0, SSL_kDHE, 0, 0, 0, 0, 0, 0, 0, 0}, | |
313 | {0, SSL_TXT_DH, 0, SSL_kDHr | SSL_kDHd | SSL_kDHE, 0, 0, 0, 0, 0, 0, 0, | |
314 | 0}, | |
315 | ||
0f113f3e MC |
316 | {0, SSL_TXT_kECDHr, 0, SSL_kECDHr, 0, 0, 0, 0, 0, 0, 0, 0}, |
317 | {0, SSL_TXT_kECDHe, 0, SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0}, | |
318 | {0, SSL_TXT_kECDH, 0, SSL_kECDHr | SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0}, | |
319 | {0, SSL_TXT_kEECDH, 0, SSL_kECDHE, 0, 0, 0, 0, 0, 0, 0, 0}, | |
320 | {0, SSL_TXT_kECDHE, 0, SSL_kECDHE, 0, 0, 0, 0, 0, 0, 0, 0}, | |
321 | {0, SSL_TXT_ECDH, 0, SSL_kECDHr | SSL_kECDHe | SSL_kECDHE, 0, 0, 0, 0, 0, | |
322 | 0, 0, 0}, | |
323 | ||
324 | {0, SSL_TXT_kPSK, 0, SSL_kPSK, 0, 0, 0, 0, 0, 0, 0, 0}, | |
dcbd5060 DSH |
325 | {0, SSL_TXT_kRSAPSK, 0, SSL_kRSAPSK, 0, 0, 0, 0, 0, 0, 0, 0}, |
326 | {0, SSL_TXT_kECDHEPSK, 0, SSL_kECDHEPSK, 0, 0, 0, 0, 0, 0, 0, 0}, | |
327 | {0, SSL_TXT_kDHEPSK, 0, SSL_kDHEPSK, 0, 0, 0, 0, 0, 0, 0, 0}, | |
0f113f3e MC |
328 | {0, SSL_TXT_kSRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0}, |
329 | {0, SSL_TXT_kGOST, 0, SSL_kGOST, 0, 0, 0, 0, 0, 0, 0, 0}, | |
330 | ||
331 | /* server authentication aliases */ | |
332 | {0, SSL_TXT_aRSA, 0, 0, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0}, | |
333 | {0, SSL_TXT_aDSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0}, | |
334 | {0, SSL_TXT_DSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0}, | |
0f113f3e MC |
335 | {0, SSL_TXT_aNULL, 0, 0, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, |
336 | /* no such ciphersuites supported! */ | |
337 | {0, SSL_TXT_aDH, 0, 0, SSL_aDH, 0, 0, 0, 0, 0, 0, 0}, | |
338 | {0, SSL_TXT_aECDH, 0, 0, SSL_aECDH, 0, 0, 0, 0, 0, 0, 0}, | |
339 | {0, SSL_TXT_aECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0}, | |
340 | {0, SSL_TXT_ECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0}, | |
341 | {0, SSL_TXT_aPSK, 0, 0, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0}, | |
0f113f3e | 342 | {0, SSL_TXT_aGOST01, 0, 0, SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0}, |
ade44dcb | 343 | {0, SSL_TXT_aGOST, 0, 0, SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0}, |
0f113f3e MC |
344 | {0, SSL_TXT_aSRP, 0, 0, SSL_aSRP, 0, 0, 0, 0, 0, 0, 0}, |
345 | ||
346 | /* aliases combining key exchange and server authentication */ | |
347 | {0, SSL_TXT_EDH, 0, SSL_kDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, | |
348 | {0, SSL_TXT_DHE, 0, SSL_kDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, | |
349 | {0, SSL_TXT_EECDH, 0, SSL_kECDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, | |
350 | {0, SSL_TXT_ECDHE, 0, SSL_kECDHE, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, | |
351 | {0, SSL_TXT_NULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0}, | |
0f113f3e MC |
352 | {0, SSL_TXT_RSA, 0, SSL_kRSA, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0}, |
353 | {0, SSL_TXT_ADH, 0, SSL_kDHE, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, | |
354 | {0, SSL_TXT_AECDH, 0, SSL_kECDHE, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, | |
dcbd5060 | 355 | {0, SSL_TXT_PSK, 0, SSL_PSK, 0, 0, 0, 0, 0, 0, 0, 0}, |
0f113f3e MC |
356 | {0, SSL_TXT_SRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0}, |
357 | ||
358 | /* symmetric encryption aliases */ | |
359 | {0, SSL_TXT_DES, 0, 0, 0, SSL_DES, 0, 0, 0, 0, 0, 0}, | |
360 | {0, SSL_TXT_3DES, 0, 0, 0, SSL_3DES, 0, 0, 0, 0, 0, 0}, | |
361 | {0, SSL_TXT_RC4, 0, 0, 0, SSL_RC4, 0, 0, 0, 0, 0, 0}, | |
362 | {0, SSL_TXT_RC2, 0, 0, 0, SSL_RC2, 0, 0, 0, 0, 0, 0}, | |
363 | {0, SSL_TXT_IDEA, 0, 0, 0, SSL_IDEA, 0, 0, 0, 0, 0, 0}, | |
364 | {0, SSL_TXT_SEED, 0, 0, 0, SSL_SEED, 0, 0, 0, 0, 0, 0}, | |
365 | {0, SSL_TXT_eNULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0}, | |
3d3701ea | 366 | {0, SSL_TXT_AES128, 0, 0, 0, SSL_AES128 | SSL_AES128GCM | SSL_AES128CCM | SSL_AES128CCM8, 0, |
e75c5a79 | 367 | 0, 0, 0, 0, 0}, |
3d3701ea | 368 | {0, SSL_TXT_AES256, 0, 0, 0, SSL_AES256 | SSL_AES256GCM | SSL_AES256CCM | SSL_AES256CCM8, 0, |
e75c5a79 | 369 | 0, 0, 0, 0, 0}, |
0f113f3e MC |
370 | {0, SSL_TXT_AES, 0, 0, 0, SSL_AES, 0, 0, 0, 0, 0, 0}, |
371 | {0, SSL_TXT_AES_GCM, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM, 0, 0, 0, 0, | |
372 | 0, 0}, | |
3d3701ea DSH |
373 | {0, SSL_TXT_AES_CCM, 0, 0, 0, SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8, 0, 0, 0, 0, |
374 | 0, 0}, | |
375 | {0, SSL_TXT_AES_CCM_8, 0, 0, 0, SSL_AES128CCM8 | SSL_AES256CCM8, 0, 0, 0, 0, | |
e75c5a79 | 376 | 0, 0}, |
0f113f3e MC |
377 | {0, SSL_TXT_CAMELLIA128, 0, 0, 0, SSL_CAMELLIA128, 0, 0, 0, 0, 0, 0}, |
378 | {0, SSL_TXT_CAMELLIA256, 0, 0, 0, SSL_CAMELLIA256, 0, 0, 0, 0, 0, 0}, | |
379 | {0, SSL_TXT_CAMELLIA, 0, 0, 0, SSL_CAMELLIA128 | SSL_CAMELLIA256, 0, 0, 0, | |
380 | 0, 0, 0}, | |
381 | ||
382 | /* MAC aliases */ | |
383 | {0, SSL_TXT_MD5, 0, 0, 0, 0, SSL_MD5, 0, 0, 0, 0, 0}, | |
384 | {0, SSL_TXT_SHA1, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0}, | |
385 | {0, SSL_TXT_SHA, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0}, | |
386 | {0, SSL_TXT_GOST94, 0, 0, 0, 0, SSL_GOST94, 0, 0, 0, 0, 0}, | |
387 | {0, SSL_TXT_GOST89MAC, 0, 0, 0, 0, SSL_GOST89MAC, 0, 0, 0, 0, 0}, | |
388 | {0, SSL_TXT_SHA256, 0, 0, 0, 0, SSL_SHA256, 0, 0, 0, 0, 0}, | |
389 | {0, SSL_TXT_SHA384, 0, 0, 0, 0, SSL_SHA384, 0, 0, 0, 0, 0}, | |
390 | ||
391 | /* protocol version aliases */ | |
392 | {0, SSL_TXT_SSLV3, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0}, | |
393 | {0, SSL_TXT_TLSV1, 0, 0, 0, 0, 0, SSL_TLSV1, 0, 0, 0, 0}, | |
394 | {0, SSL_TXT_TLSV1_2, 0, 0, 0, 0, 0, SSL_TLSV1_2, 0, 0, 0, 0}, | |
395 | ||
396 | /* export flag */ | |
397 | {0, SSL_TXT_EXP, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0}, | |
398 | {0, SSL_TXT_EXPORT, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0}, | |
399 | ||
400 | /* strength classes */ | |
401 | {0, SSL_TXT_EXP40, 0, 0, 0, 0, 0, 0, SSL_EXP40, 0, 0, 0}, | |
402 | {0, SSL_TXT_EXP56, 0, 0, 0, 0, 0, 0, SSL_EXP56, 0, 0, 0}, | |
403 | {0, SSL_TXT_LOW, 0, 0, 0, 0, 0, 0, SSL_LOW, 0, 0, 0}, | |
404 | {0, SSL_TXT_MEDIUM, 0, 0, 0, 0, 0, 0, SSL_MEDIUM, 0, 0, 0}, | |
405 | {0, SSL_TXT_HIGH, 0, 0, 0, 0, 0, 0, SSL_HIGH, 0, 0, 0}, | |
406 | /* FIPS 140-2 approved ciphersuite */ | |
407 | {0, SSL_TXT_FIPS, 0, 0, 0, ~SSL_eNULL, 0, 0, SSL_FIPS, 0, 0, 0}, | |
408 | ||
409 | /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */ | |
410 | {0, SSL3_TXT_EDH_DSS_DES_40_CBC_SHA, 0, | |
411 | SSL_kDHE, SSL_aDSS, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_EXPORT | SSL_EXP40, | |
412 | 0, 0, 0,}, | |
413 | {0, SSL3_TXT_EDH_DSS_DES_64_CBC_SHA, 0, | |
414 | SSL_kDHE, SSL_aDSS, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_NOT_EXP | SSL_LOW, | |
415 | 0, 0, 0,}, | |
416 | {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA, 0, | |
417 | SSL_kDHE, SSL_aDSS, SSL_3DES, SSL_SHA1, SSL_SSLV3, | |
418 | SSL_NOT_EXP | SSL_HIGH | SSL_FIPS, 0, 0, 0,}, | |
419 | {0, SSL3_TXT_EDH_RSA_DES_40_CBC_SHA, 0, | |
420 | SSL_kDHE, SSL_aRSA, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_EXPORT | SSL_EXP40, | |
421 | 0, 0, 0,}, | |
422 | {0, SSL3_TXT_EDH_RSA_DES_64_CBC_SHA, 0, | |
423 | SSL_kDHE, SSL_aRSA, SSL_DES, SSL_SHA1, SSL_SSLV3, SSL_NOT_EXP | SSL_LOW, | |
424 | 0, 0, 0,}, | |
425 | {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA, 0, | |
426 | SSL_kDHE, SSL_aRSA, SSL_3DES, SSL_SHA1, SSL_SSLV3, | |
427 | SSL_NOT_EXP | SSL_HIGH | SSL_FIPS, 0, 0, 0,}, | |
428 | ||
429 | }; | |
430 | ||
431 | /* | |
432 | * Search for public key algorithm with given name and return its pkey_id if | |
433 | * it is available. Otherwise return 0 | |
81025661 | 434 | */ |
70531c14 DSH |
435 | #ifdef OPENSSL_NO_ENGINE |
436 | ||
81025661 | 437 | static int get_optional_pkey_id(const char *pkey_name) |
0f113f3e MC |
438 | { |
439 | const EVP_PKEY_ASN1_METHOD *ameth; | |
440 | int pkey_id = 0; | |
441 | ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1); | |
442 | if (ameth) { | |
443 | EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth); | |
444 | } | |
445 | return pkey_id; | |
446 | } | |
d02b48c6 | 447 | |
70531c14 DSH |
448 | #else |
449 | ||
450 | static int get_optional_pkey_id(const char *pkey_name) | |
0f113f3e MC |
451 | { |
452 | const EVP_PKEY_ASN1_METHOD *ameth; | |
453 | ENGINE *tmpeng = NULL; | |
454 | int pkey_id = 0; | |
455 | ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1); | |
456 | if (ameth) { | |
457 | EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth); | |
458 | } | |
459 | if (tmpeng) | |
460 | ENGINE_finish(tmpeng); | |
461 | return pkey_id; | |
462 | } | |
70531c14 DSH |
463 | |
464 | #endif | |
465 | ||
633d49c7 DSH |
466 | /* masks of disabled algorithms */ |
467 | static unsigned long disabled_enc_mask; | |
468 | static unsigned long disabled_mac_mask; | |
469 | static unsigned long disabled_mkey_mask; | |
470 | static unsigned long disabled_auth_mask; | |
471 | ||
7f3c9036 | 472 | void ssl_load_ciphers(void) |
0f113f3e | 473 | { |
98c9ce2f DSH |
474 | size_t i; |
475 | const ssl_cipher_table *t; | |
633d49c7 | 476 | disabled_enc_mask = 0; |
98c9ce2f | 477 | for (i = 0, t = ssl_cipher_table_cipher; i < SSL_ENC_NUM_IDX; i++, t++) { |
633d49c7 | 478 | if (t->nid == NID_undef) { |
98c9ce2f | 479 | ssl_cipher_methods[i] = NULL; |
633d49c7 DSH |
480 | } else { |
481 | const EVP_CIPHER *cipher = EVP_get_cipherbynid(t->nid); | |
482 | ssl_cipher_methods[i] = cipher; | |
483 | if (cipher == NULL) | |
484 | disabled_enc_mask |= t->mask; | |
485 | } | |
0f113f3e | 486 | } |
633d49c7 DSH |
487 | #ifdef SSL_FORBID_ENULL |
488 | disabled_enc_mask |= SSL_eNULL; | |
489 | #endif | |
490 | disabled_mac_mask = 0; | |
98c9ce2f | 491 | for (i = 0, t = ssl_cipher_table_mac; i < SSL_MD_NUM_IDX; i++, t++) { |
633d49c7 DSH |
492 | const EVP_MD *md = EVP_get_digestbynid(t->nid); |
493 | ssl_digest_methods[i] = md; | |
494 | if (md == NULL) { | |
495 | disabled_mac_mask |= t->mask; | |
496 | } else { | |
497 | ssl_mac_secret_size[i] = EVP_MD_size(md); | |
98c9ce2f DSH |
498 | OPENSSL_assert(ssl_mac_secret_size[i] >= 0); |
499 | } | |
500 | } | |
501 | /* Make sure we can access MD5 and SHA1 */ | |
502 | OPENSSL_assert(ssl_digest_methods[SSL_MD_MD5_IDX] != NULL); | |
503 | OPENSSL_assert(ssl_digest_methods[SSL_MD_SHA1_IDX] != NULL); | |
633d49c7 DSH |
504 | |
505 | disabled_mkey_mask = 0; | |
506 | disabled_auth_mask = 0; | |
507 | ||
508 | #ifdef OPENSSL_NO_RSA | |
332a251f | 509 | disabled_mkey_mask |= SSL_kRSA | SSL_kRSAPSK; |
633d49c7 DSH |
510 | disabled_auth_mask |= SSL_aRSA; |
511 | #endif | |
512 | #ifdef OPENSSL_NO_DSA | |
513 | disabled_auth_mask |= SSL_aDSS; | |
514 | #endif | |
515 | #ifdef OPENSSL_NO_DH | |
332a251f | 516 | disabled_mkey_mask |= SSL_kDHr | SSL_kDHd | SSL_kDHE | SSL_kDHEPSK; |
633d49c7 DSH |
517 | disabled_auth_mask |= SSL_aDH; |
518 | #endif | |
519 | #ifdef OPENSSL_NO_EC | |
332a251f | 520 | disabled_mkey_mask |= SSL_kECDHe | SSL_kECDHr | SSL_kECDHEPSK; |
633d49c7 DSH |
521 | disabled_auth_mask |= SSL_aECDSA | SSL_aECDH; |
522 | #endif | |
523 | #ifdef OPENSSL_NO_PSK | |
332a251f | 524 | disabled_mkey_mask |= SSL_PSK; |
633d49c7 DSH |
525 | disabled_auth_mask |= SSL_aPSK; |
526 | #endif | |
527 | #ifdef OPENSSL_NO_SRP | |
528 | disabled_mkey_mask |= SSL_kSRP; | |
529 | #endif | |
530 | ||
531 | /* | |
532 | * Check for presence of GOST 34.10 algorithms, and if they are not | |
533 | * present, disable appropriate auth and key exchange | |
534 | */ | |
e1fa652d DSH |
535 | ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); |
536 | if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) { | |
537 | ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32; | |
633d49c7 DSH |
538 | } else { |
539 | disabled_mac_mask |= SSL_GOST89MAC; | |
e1fa652d | 540 | } |
633d49c7 | 541 | |
633d49c7 DSH |
542 | if (!get_optional_pkey_id("gost2001")) |
543 | disabled_auth_mask |= SSL_aGOST01; | |
544 | /* | |
545 | * Disable GOST key exchange if no GOST signature algs are available * | |
546 | */ | |
ade44dcb | 547 | if ((disabled_auth_mask & SSL_aGOST01) == SSL_aGOST01) |
633d49c7 | 548 | disabled_mkey_mask |= SSL_kGOST; |
0f113f3e MC |
549 | } |
550 | ||
09b6c2ef DSH |
551 | #ifndef OPENSSL_NO_COMP |
552 | ||
0f113f3e MC |
553 | static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b) |
554 | { | |
555 | return ((*a)->id - (*b)->id); | |
556 | } | |
7ba666fa RL |
557 | |
558 | static void load_builtin_compressions(void) | |
0f113f3e MC |
559 | { |
560 | int got_write_lock = 0; | |
561 | ||
562 | CRYPTO_r_lock(CRYPTO_LOCK_SSL); | |
563 | if (ssl_comp_methods == NULL) { | |
564 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL); | |
565 | CRYPTO_w_lock(CRYPTO_LOCK_SSL); | |
566 | got_write_lock = 1; | |
567 | ||
568 | if (ssl_comp_methods == NULL) { | |
569 | SSL_COMP *comp = NULL; | |
9a555706 | 570 | COMP_METHOD *method = COMP_zlib(); |
0f113f3e MC |
571 | |
572 | MemCheck_off(); | |
573 | ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp); | |
9a555706 RS |
574 | if (COMP_get_type(method) != NID_undef |
575 | && ssl_comp_methods != NULL) { | |
b4faea50 | 576 | comp = OPENSSL_malloc(sizeof(*comp)); |
0f113f3e | 577 | if (comp != NULL) { |
9a555706 RS |
578 | comp->method = method; |
579 | comp->id = SSL_COMP_ZLIB_IDX; | |
580 | comp->name = COMP_get_name(method); | |
581 | sk_SSL_COMP_push(ssl_comp_methods, comp); | |
582 | sk_SSL_COMP_sort(ssl_comp_methods); | |
0f113f3e | 583 | } |
0f113f3e MC |
584 | } |
585 | MemCheck_on(); | |
586 | } | |
587 | } | |
588 | ||
589 | if (got_write_lock) | |
590 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL); | |
591 | else | |
592 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL); | |
593 | } | |
09b6c2ef | 594 | #endif |
7ba666fa | 595 | |
0821bcd4 | 596 | int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, |
0f113f3e MC |
597 | const EVP_MD **md, int *mac_pkey_type, |
598 | int *mac_secret_size, SSL_COMP **comp, int use_etm) | |
599 | { | |
600 | int i; | |
601 | const SSL_CIPHER *c; | |
602 | ||
603 | c = s->cipher; | |
604 | if (c == NULL) | |
605 | return (0); | |
606 | if (comp != NULL) { | |
607 | SSL_COMP ctmp; | |
09b6c2ef | 608 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 609 | load_builtin_compressions(); |
09b6c2ef | 610 | #endif |
413c4f45 | 611 | |
0f113f3e MC |
612 | *comp = NULL; |
613 | ctmp.id = s->compress_meth; | |
614 | if (ssl_comp_methods != NULL) { | |
615 | i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp); | |
616 | if (i >= 0) | |
617 | *comp = sk_SSL_COMP_value(ssl_comp_methods, i); | |
618 | else | |
619 | *comp = NULL; | |
620 | } | |
69f68237 | 621 | /* If were only interested in comp then return success */ |
61986d32 | 622 | if ((enc == NULL) && (md == NULL)) |
69f68237 | 623 | return 1; |
0f113f3e MC |
624 | } |
625 | ||
626 | if ((enc == NULL) || (md == NULL)) | |
69f68237 | 627 | return 0; |
0f113f3e | 628 | |
98c9ce2f | 629 | i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc); |
0f113f3e | 630 | |
98c9ce2f | 631 | if (i == -1) |
0f113f3e MC |
632 | *enc = NULL; |
633 | else { | |
634 | if (i == SSL_ENC_NULL_IDX) | |
635 | *enc = EVP_enc_null(); | |
636 | else | |
637 | *enc = ssl_cipher_methods[i]; | |
638 | } | |
639 | ||
98c9ce2f DSH |
640 | i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac); |
641 | if (i == -1) { | |
0f113f3e MC |
642 | *md = NULL; |
643 | if (mac_pkey_type != NULL) | |
644 | *mac_pkey_type = NID_undef; | |
645 | if (mac_secret_size != NULL) | |
646 | *mac_secret_size = 0; | |
647 | if (c->algorithm_mac == SSL_AEAD) | |
648 | mac_pkey_type = NULL; | |
649 | } else { | |
650 | *md = ssl_digest_methods[i]; | |
651 | if (mac_pkey_type != NULL) | |
652 | *mac_pkey_type = ssl_mac_pkey_id[i]; | |
653 | if (mac_secret_size != NULL) | |
654 | *mac_secret_size = ssl_mac_secret_size[i]; | |
655 | } | |
656 | ||
657 | if ((*enc != NULL) && | |
658 | (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER)) | |
659 | && (!mac_pkey_type || *mac_pkey_type != NID_undef)) { | |
660 | const EVP_CIPHER *evp; | |
661 | ||
662 | if (use_etm) | |
663 | return 1; | |
664 | ||
665 | if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR || | |
666 | s->ssl_version < TLS1_VERSION) | |
667 | return 1; | |
668 | ||
669 | if (FIPS_mode()) | |
670 | return 1; | |
671 | ||
672 | if (c->algorithm_enc == SSL_RC4 && | |
673 | c->algorithm_mac == SSL_MD5 && | |
674 | (evp = EVP_get_cipherbyname("RC4-HMAC-MD5"))) | |
675 | *enc = evp, *md = NULL; | |
676 | else if (c->algorithm_enc == SSL_AES128 && | |
677 | c->algorithm_mac == SSL_SHA1 && | |
678 | (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1"))) | |
679 | *enc = evp, *md = NULL; | |
680 | else if (c->algorithm_enc == SSL_AES256 && | |
681 | c->algorithm_mac == SSL_SHA1 && | |
682 | (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1"))) | |
683 | *enc = evp, *md = NULL; | |
684 | else if (c->algorithm_enc == SSL_AES128 && | |
685 | c->algorithm_mac == SSL_SHA256 && | |
686 | (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA256"))) | |
687 | *enc = evp, *md = NULL; | |
688 | else if (c->algorithm_enc == SSL_AES256 && | |
689 | c->algorithm_mac == SSL_SHA256 && | |
690 | (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA256"))) | |
691 | *enc = evp, *md = NULL; | |
692 | return (1); | |
693 | } else | |
694 | return (0); | |
695 | } | |
696 | ||
697 | int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md) | |
81025661 | 698 | { |
0f113f3e MC |
699 | if (idx < 0 || idx >= SSL_MD_NUM_IDX) { |
700 | return 0; | |
701 | } | |
702 | *mask = ssl_handshake_digest_flag[idx]; | |
703 | if (*mask) | |
704 | *md = ssl_digest_methods[idx]; | |
705 | else | |
706 | *md = NULL; | |
707 | return 1; | |
81025661 DSH |
708 | } |
709 | ||
58964a49 | 710 | #define ITEM_SEP(a) \ |
0f113f3e | 711 | (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) |
58964a49 | 712 | |
6b691a5c | 713 | static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
0f113f3e MC |
714 | CIPHER_ORDER **tail) |
715 | { | |
716 | if (curr == *tail) | |
717 | return; | |
718 | if (curr == *head) | |
719 | *head = curr->next; | |
720 | if (curr->prev != NULL) | |
721 | curr->prev->next = curr->next; | |
722 | if (curr->next != NULL) | |
723 | curr->next->prev = curr->prev; | |
724 | (*tail)->next = curr; | |
725 | curr->prev = *tail; | |
726 | curr->next = NULL; | |
727 | *tail = curr; | |
728 | } | |
58964a49 | 729 | |
fd5bc65c | 730 | static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
0f113f3e MC |
731 | CIPHER_ORDER **tail) |
732 | { | |
733 | if (curr == *head) | |
734 | return; | |
735 | if (curr == *tail) | |
736 | *tail = curr->prev; | |
737 | if (curr->next != NULL) | |
738 | curr->next->prev = curr->prev; | |
739 | if (curr->prev != NULL) | |
740 | curr->prev->next = curr->next; | |
741 | (*head)->prev = curr; | |
742 | curr->next = *head; | |
743 | curr->prev = NULL; | |
744 | *head = curr; | |
745 | } | |
746 | ||
018e57c7 | 747 | static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, |
0f113f3e MC |
748 | int num_of_ciphers, |
749 | unsigned long disabled_mkey, | |
750 | unsigned long disabled_auth, | |
751 | unsigned long disabled_enc, | |
752 | unsigned long disabled_mac, | |
753 | unsigned long disabled_ssl, | |
754 | CIPHER_ORDER *co_list, | |
755 | CIPHER_ORDER **head_p, | |
756 | CIPHER_ORDER **tail_p) | |
757 | { | |
758 | int i, co_list_num; | |
759 | const SSL_CIPHER *c; | |
760 | ||
761 | /* | |
762 | * We have num_of_ciphers descriptions compiled in, depending on the | |
763 | * method selected (SSLv3, TLSv1 etc). | |
764 | * These will later be sorted in a linked list with at most num | |
765 | * entries. | |
766 | */ | |
767 | ||
768 | /* Get the initial list of ciphers */ | |
769 | co_list_num = 0; /* actual count of ciphers */ | |
770 | for (i = 0; i < num_of_ciphers; i++) { | |
771 | c = ssl_method->get_cipher(i); | |
772 | /* drop those that use any of that is not available */ | |
773 | if ((c != NULL) && c->valid && | |
774 | (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) && | |
775 | !(c->algorithm_mkey & disabled_mkey) && | |
776 | !(c->algorithm_auth & disabled_auth) && | |
777 | !(c->algorithm_enc & disabled_enc) && | |
778 | !(c->algorithm_mac & disabled_mac) && | |
779 | !(c->algorithm_ssl & disabled_ssl)) { | |
780 | co_list[co_list_num].cipher = c; | |
781 | co_list[co_list_num].next = NULL; | |
782 | co_list[co_list_num].prev = NULL; | |
783 | co_list[co_list_num].active = 0; | |
784 | co_list_num++; | |
0f113f3e MC |
785 | /* |
786 | * if (!sk_push(ca_list,(char *)c)) goto err; | |
787 | */ | |
788 | } | |
789 | } | |
790 | ||
791 | /* | |
792 | * Prepare linked list from list entries | |
793 | */ | |
794 | if (co_list_num > 0) { | |
795 | co_list[0].prev = NULL; | |
796 | ||
797 | if (co_list_num > 1) { | |
798 | co_list[0].next = &co_list[1]; | |
799 | ||
800 | for (i = 1; i < co_list_num - 1; i++) { | |
801 | co_list[i].prev = &co_list[i - 1]; | |
802 | co_list[i].next = &co_list[i + 1]; | |
803 | } | |
804 | ||
805 | co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; | |
806 | } | |
807 | ||
808 | co_list[co_list_num - 1].next = NULL; | |
809 | ||
810 | *head_p = &co_list[0]; | |
811 | *tail_p = &co_list[co_list_num - 1]; | |
812 | } | |
813 | } | |
d02b48c6 | 814 | |
babb3798 | 815 | static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, |
0f113f3e MC |
816 | int num_of_group_aliases, |
817 | unsigned long disabled_mkey, | |
818 | unsigned long disabled_auth, | |
819 | unsigned long disabled_enc, | |
820 | unsigned long disabled_mac, | |
821 | unsigned long disabled_ssl, | |
822 | CIPHER_ORDER *head) | |
823 | { | |
824 | CIPHER_ORDER *ciph_curr; | |
825 | const SSL_CIPHER **ca_curr; | |
826 | int i; | |
827 | unsigned long mask_mkey = ~disabled_mkey; | |
828 | unsigned long mask_auth = ~disabled_auth; | |
829 | unsigned long mask_enc = ~disabled_enc; | |
830 | unsigned long mask_mac = ~disabled_mac; | |
831 | unsigned long mask_ssl = ~disabled_ssl; | |
832 | ||
833 | /* | |
834 | * First, add the real ciphers as already collected | |
835 | */ | |
836 | ciph_curr = head; | |
837 | ca_curr = ca_list; | |
838 | while (ciph_curr != NULL) { | |
839 | *ca_curr = ciph_curr->cipher; | |
840 | ca_curr++; | |
841 | ciph_curr = ciph_curr->next; | |
842 | } | |
843 | ||
844 | /* | |
845 | * Now we add the available ones from the cipher_aliases[] table. | |
846 | * They represent either one or more algorithms, some of which | |
847 | * in any affected category must be supported (set in enabled_mask), | |
848 | * or represent a cipher strength value (will be added in any case because algorithms=0). | |
849 | */ | |
850 | for (i = 0; i < num_of_group_aliases; i++) { | |
851 | unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey; | |
852 | unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth; | |
853 | unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc; | |
854 | unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac; | |
855 | unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl; | |
856 | ||
857 | if (algorithm_mkey) | |
858 | if ((algorithm_mkey & mask_mkey) == 0) | |
859 | continue; | |
860 | ||
861 | if (algorithm_auth) | |
862 | if ((algorithm_auth & mask_auth) == 0) | |
863 | continue; | |
864 | ||
865 | if (algorithm_enc) | |
866 | if ((algorithm_enc & mask_enc) == 0) | |
867 | continue; | |
868 | ||
869 | if (algorithm_mac) | |
870 | if ((algorithm_mac & mask_mac) == 0) | |
871 | continue; | |
872 | ||
873 | if (algorithm_ssl) | |
874 | if ((algorithm_ssl & mask_ssl) == 0) | |
875 | continue; | |
876 | ||
877 | *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); | |
878 | ca_curr++; | |
879 | } | |
880 | ||
881 | *ca_curr = NULL; /* end of list */ | |
882 | } | |
d02b48c6 | 883 | |
52b8dad8 | 884 | static void ssl_cipher_apply_rule(unsigned long cipher_id, |
0f113f3e MC |
885 | unsigned long alg_mkey, |
886 | unsigned long alg_auth, | |
887 | unsigned long alg_enc, | |
888 | unsigned long alg_mac, | |
889 | unsigned long alg_ssl, | |
890 | unsigned long algo_strength, int rule, | |
891 | int strength_bits, CIPHER_ORDER **head_p, | |
892 | CIPHER_ORDER **tail_p) | |
893 | { | |
894 | CIPHER_ORDER *head, *tail, *curr, *next, *last; | |
895 | const SSL_CIPHER *cp; | |
896 | int reverse = 0; | |
018e57c7 DSH |
897 | |
898 | #ifdef CIPHER_DEBUG | |
0f113f3e MC |
899 | fprintf(stderr, |
900 | "Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n", | |
901 | rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, | |
902 | algo_strength, strength_bits); | |
018e57c7 | 903 | #endif |
d02b48c6 | 904 | |
0f113f3e MC |
905 | if (rule == CIPHER_DEL) |
906 | reverse = 1; /* needed to maintain sorting between | |
907 | * currently deleted ciphers */ | |
908 | ||
909 | head = *head_p; | |
910 | tail = *tail_p; | |
911 | ||
912 | if (reverse) { | |
913 | next = tail; | |
914 | last = head; | |
915 | } else { | |
916 | next = head; | |
917 | last = tail; | |
918 | } | |
919 | ||
920 | curr = NULL; | |
921 | for (;;) { | |
922 | if (curr == last) | |
923 | break; | |
924 | ||
925 | curr = next; | |
926 | ||
927 | if (curr == NULL) | |
928 | break; | |
929 | ||
930 | next = reverse ? curr->prev : curr->next; | |
931 | ||
932 | cp = curr->cipher; | |
933 | ||
934 | /* | |
935 | * Selection criteria is either the value of strength_bits | |
936 | * or the algorithms used. | |
937 | */ | |
938 | if (strength_bits >= 0) { | |
939 | if (strength_bits != cp->strength_bits) | |
940 | continue; | |
941 | } else { | |
018e57c7 | 942 | #ifdef CIPHER_DEBUG |
0f113f3e MC |
943 | fprintf(stderr, |
944 | "\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n", | |
945 | cp->name, cp->algorithm_mkey, cp->algorithm_auth, | |
946 | cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl, | |
947 | cp->algo_strength); | |
018e57c7 | 948 | #endif |
323fa645 | 949 | #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL |
0f113f3e MC |
950 | if (cipher_id && cipher_id != cp->id) |
951 | continue; | |
323fa645 | 952 | #endif |
0f113f3e MC |
953 | if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) |
954 | continue; | |
955 | if (alg_auth && !(alg_auth & cp->algorithm_auth)) | |
956 | continue; | |
957 | if (alg_enc && !(alg_enc & cp->algorithm_enc)) | |
958 | continue; | |
959 | if (alg_mac && !(alg_mac & cp->algorithm_mac)) | |
960 | continue; | |
961 | if (alg_ssl && !(alg_ssl & cp->algorithm_ssl)) | |
962 | continue; | |
963 | if ((algo_strength & SSL_EXP_MASK) | |
964 | && !(algo_strength & SSL_EXP_MASK & cp->algo_strength)) | |
965 | continue; | |
966 | if ((algo_strength & SSL_STRONG_MASK) | |
967 | && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) | |
968 | continue; | |
969 | } | |
018e57c7 DSH |
970 | |
971 | #ifdef CIPHER_DEBUG | |
0f113f3e | 972 | fprintf(stderr, "Action = %d\n", rule); |
018e57c7 DSH |
973 | #endif |
974 | ||
0f113f3e MC |
975 | /* add the cipher if it has not been added yet. */ |
976 | if (rule == CIPHER_ADD) { | |
977 | /* reverse == 0 */ | |
978 | if (!curr->active) { | |
979 | ll_append_tail(&head, curr, &tail); | |
980 | curr->active = 1; | |
981 | } | |
982 | } | |
983 | /* Move the added cipher to this location */ | |
984 | else if (rule == CIPHER_ORD) { | |
985 | /* reverse == 0 */ | |
986 | if (curr->active) { | |
987 | ll_append_tail(&head, curr, &tail); | |
988 | } | |
989 | } else if (rule == CIPHER_DEL) { | |
990 | /* reverse == 1 */ | |
991 | if (curr->active) { | |
992 | /* | |
993 | * most recently deleted ciphersuites get best positions for | |
994 | * any future CIPHER_ADD (note that the CIPHER_DEL loop works | |
995 | * in reverse to maintain the order) | |
996 | */ | |
997 | ll_append_head(&head, curr, &tail); | |
998 | curr->active = 0; | |
999 | } | |
1000 | } else if (rule == CIPHER_KILL) { | |
1001 | /* reverse == 0 */ | |
1002 | if (head == curr) | |
1003 | head = curr->next; | |
1004 | else | |
1005 | curr->prev->next = curr->next; | |
1006 | if (tail == curr) | |
1007 | tail = curr->prev; | |
1008 | curr->active = 0; | |
1009 | if (curr->next != NULL) | |
1010 | curr->next->prev = curr->prev; | |
1011 | if (curr->prev != NULL) | |
1012 | curr->prev->next = curr->next; | |
1013 | curr->next = NULL; | |
1014 | curr->prev = NULL; | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | *head_p = head; | |
1019 | *tail_p = tail; | |
1020 | } | |
018e57c7 | 1021 | |
a717831d | 1022 | static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, |
0f113f3e MC |
1023 | CIPHER_ORDER **tail_p) |
1024 | { | |
1025 | int max_strength_bits, i, *number_uses; | |
1026 | CIPHER_ORDER *curr; | |
1027 | ||
1028 | /* | |
1029 | * This routine sorts the ciphers with descending strength. The sorting | |
1030 | * must keep the pre-sorted sequence, so we apply the normal sorting | |
1031 | * routine as '+' movement to the end of the list. | |
1032 | */ | |
1033 | max_strength_bits = 0; | |
1034 | curr = *head_p; | |
1035 | while (curr != NULL) { | |
1036 | if (curr->active && (curr->cipher->strength_bits > max_strength_bits)) | |
1037 | max_strength_bits = curr->cipher->strength_bits; | |
1038 | curr = curr->next; | |
1039 | } | |
1040 | ||
16f8d4eb | 1041 | number_uses = OPENSSL_malloc(sizeof(int) * (max_strength_bits + 1)); |
0f113f3e MC |
1042 | if (!number_uses) { |
1043 | SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE); | |
1044 | return (0); | |
1045 | } | |
16f8d4eb | 1046 | memset(number_uses, 0, sizeof(int) * (max_strength_bits + 1)); |
0f113f3e MC |
1047 | |
1048 | /* | |
1049 | * Now find the strength_bits values actually used | |
1050 | */ | |
1051 | curr = *head_p; | |
1052 | while (curr != NULL) { | |
1053 | if (curr->active) | |
1054 | number_uses[curr->cipher->strength_bits]++; | |
1055 | curr = curr->next; | |
1056 | } | |
1057 | /* | |
1058 | * Go through the list of used strength_bits values in descending | |
1059 | * order. | |
1060 | */ | |
1061 | for (i = max_strength_bits; i >= 0; i--) | |
1062 | if (number_uses[i] > 0) | |
1063 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, | |
1064 | tail_p); | |
1065 | ||
1066 | OPENSSL_free(number_uses); | |
1067 | return (1); | |
1068 | } | |
018e57c7 DSH |
1069 | |
1070 | static int ssl_cipher_process_rulestr(const char *rule_str, | |
0f113f3e MC |
1071 | CIPHER_ORDER **head_p, |
1072 | CIPHER_ORDER **tail_p, | |
1073 | const SSL_CIPHER **ca_list, CERT *c) | |
1074 | { | |
1075 | unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, | |
1076 | algo_strength; | |
1077 | const char *l, *buf; | |
1078 | int j, multi, found, rule, retval, ok, buflen; | |
1079 | unsigned long cipher_id = 0; | |
1080 | char ch; | |
1081 | ||
1082 | retval = 1; | |
1083 | l = rule_str; | |
1084 | for (;;) { | |
1085 | ch = *l; | |
1086 | ||
1087 | if (ch == '\0') | |
1088 | break; /* done */ | |
1089 | if (ch == '-') { | |
1090 | rule = CIPHER_DEL; | |
1091 | l++; | |
1092 | } else if (ch == '+') { | |
1093 | rule = CIPHER_ORD; | |
1094 | l++; | |
1095 | } else if (ch == '!') { | |
1096 | rule = CIPHER_KILL; | |
1097 | l++; | |
1098 | } else if (ch == '@') { | |
1099 | rule = CIPHER_SPECIAL; | |
1100 | l++; | |
1101 | } else { | |
1102 | rule = CIPHER_ADD; | |
1103 | } | |
1104 | ||
1105 | if (ITEM_SEP(ch)) { | |
1106 | l++; | |
1107 | continue; | |
1108 | } | |
1109 | ||
1110 | alg_mkey = 0; | |
1111 | alg_auth = 0; | |
1112 | alg_enc = 0; | |
1113 | alg_mac = 0; | |
1114 | alg_ssl = 0; | |
1115 | algo_strength = 0; | |
1116 | ||
1117 | for (;;) { | |
1118 | ch = *l; | |
1119 | buf = l; | |
1120 | buflen = 0; | |
ca570cfd | 1121 | #ifndef CHARSET_EBCDIC |
0f113f3e MC |
1122 | while (((ch >= 'A') && (ch <= 'Z')) || |
1123 | ((ch >= '0') && (ch <= '9')) || | |
1124 | ((ch >= 'a') && (ch <= 'z')) || | |
1125 | (ch == '-') || (ch == '.') || (ch == '=')) | |
ca570cfd | 1126 | #else |
0f113f3e | 1127 | while (isalnum(ch) || (ch == '-') || (ch == '.') || (ch == '=')) |
ca570cfd | 1128 | #endif |
0f113f3e MC |
1129 | { |
1130 | ch = *(++l); | |
1131 | buflen++; | |
1132 | } | |
1133 | ||
1134 | if (buflen == 0) { | |
1135 | /* | |
1136 | * We hit something we cannot deal with, | |
1137 | * it is no command or separator nor | |
1138 | * alphanumeric, so we call this an error. | |
1139 | */ | |
1140 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, | |
1141 | SSL_R_INVALID_COMMAND); | |
1142 | retval = found = 0; | |
1143 | l++; | |
1144 | break; | |
1145 | } | |
1146 | ||
1147 | if (rule == CIPHER_SPECIAL) { | |
1148 | found = 0; /* unused -- avoid compiler warning */ | |
1149 | break; /* special treatment */ | |
1150 | } | |
1151 | ||
1152 | /* check for multi-part specification */ | |
1153 | if (ch == '+') { | |
1154 | multi = 1; | |
1155 | l++; | |
1156 | } else | |
1157 | multi = 0; | |
1158 | ||
1159 | /* | |
1160 | * Now search for the cipher alias in the ca_list. Be careful | |
1161 | * with the strncmp, because the "buflen" limitation | |
1162 | * will make the rule "ADH:SOME" and the cipher | |
1163 | * "ADH-MY-CIPHER" look like a match for buflen=3. | |
1164 | * So additionally check whether the cipher name found | |
1165 | * has the correct length. We can save a strlen() call: | |
1166 | * just checking for the '\0' at the right place is | |
1167 | * sufficient, we have to strncmp() anyway. (We cannot | |
1168 | * use strcmp(), because buf is not '\0' terminated.) | |
1169 | */ | |
1170 | j = found = 0; | |
1171 | cipher_id = 0; | |
1172 | while (ca_list[j]) { | |
86885c28 RS |
1173 | if (strncmp(buf, ca_list[j]->name, buflen) == 0 |
1174 | && (ca_list[j]->name[buflen] == '\0')) { | |
0f113f3e MC |
1175 | found = 1; |
1176 | break; | |
1177 | } else | |
1178 | j++; | |
1179 | } | |
1180 | ||
1181 | if (!found) | |
1182 | break; /* ignore this entry */ | |
1183 | ||
1184 | if (ca_list[j]->algorithm_mkey) { | |
1185 | if (alg_mkey) { | |
1186 | alg_mkey &= ca_list[j]->algorithm_mkey; | |
1187 | if (!alg_mkey) { | |
1188 | found = 0; | |
1189 | break; | |
1190 | } | |
1191 | } else | |
1192 | alg_mkey = ca_list[j]->algorithm_mkey; | |
1193 | } | |
1194 | ||
1195 | if (ca_list[j]->algorithm_auth) { | |
1196 | if (alg_auth) { | |
1197 | alg_auth &= ca_list[j]->algorithm_auth; | |
1198 | if (!alg_auth) { | |
1199 | found = 0; | |
1200 | break; | |
1201 | } | |
1202 | } else | |
1203 | alg_auth = ca_list[j]->algorithm_auth; | |
1204 | } | |
1205 | ||
1206 | if (ca_list[j]->algorithm_enc) { | |
1207 | if (alg_enc) { | |
1208 | alg_enc &= ca_list[j]->algorithm_enc; | |
1209 | if (!alg_enc) { | |
1210 | found = 0; | |
1211 | break; | |
1212 | } | |
1213 | } else | |
1214 | alg_enc = ca_list[j]->algorithm_enc; | |
1215 | } | |
1216 | ||
1217 | if (ca_list[j]->algorithm_mac) { | |
1218 | if (alg_mac) { | |
1219 | alg_mac &= ca_list[j]->algorithm_mac; | |
1220 | if (!alg_mac) { | |
1221 | found = 0; | |
1222 | break; | |
1223 | } | |
1224 | } else | |
1225 | alg_mac = ca_list[j]->algorithm_mac; | |
1226 | } | |
1227 | ||
1228 | if (ca_list[j]->algo_strength & SSL_EXP_MASK) { | |
1229 | if (algo_strength & SSL_EXP_MASK) { | |
1230 | algo_strength &= | |
1231 | (ca_list[j]->algo_strength & SSL_EXP_MASK) | | |
1232 | ~SSL_EXP_MASK; | |
1233 | if (!(algo_strength & SSL_EXP_MASK)) { | |
1234 | found = 0; | |
1235 | break; | |
1236 | } | |
1237 | } else | |
1238 | algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; | |
1239 | } | |
1240 | ||
1241 | if (ca_list[j]->algo_strength & SSL_STRONG_MASK) { | |
1242 | if (algo_strength & SSL_STRONG_MASK) { | |
1243 | algo_strength &= | |
1244 | (ca_list[j]->algo_strength & SSL_STRONG_MASK) | | |
1245 | ~SSL_STRONG_MASK; | |
1246 | if (!(algo_strength & SSL_STRONG_MASK)) { | |
1247 | found = 0; | |
1248 | break; | |
1249 | } | |
1250 | } else | |
1251 | algo_strength |= | |
1252 | ca_list[j]->algo_strength & SSL_STRONG_MASK; | |
1253 | } | |
1254 | ||
1255 | if (ca_list[j]->valid) { | |
1256 | /* | |
1257 | * explicit ciphersuite found; its protocol version does not | |
1258 | * become part of the search pattern! | |
1259 | */ | |
1260 | ||
1261 | cipher_id = ca_list[j]->id; | |
1262 | } else { | |
1263 | /* | |
1264 | * not an explicit ciphersuite; only in this case, the | |
1265 | * protocol version is considered part of the search pattern | |
1266 | */ | |
1267 | ||
1268 | if (ca_list[j]->algorithm_ssl) { | |
1269 | if (alg_ssl) { | |
1270 | alg_ssl &= ca_list[j]->algorithm_ssl; | |
1271 | if (!alg_ssl) { | |
1272 | found = 0; | |
1273 | break; | |
1274 | } | |
1275 | } else | |
1276 | alg_ssl = ca_list[j]->algorithm_ssl; | |
1277 | } | |
1278 | } | |
1279 | ||
1280 | if (!multi) | |
1281 | break; | |
1282 | } | |
1283 | ||
1284 | /* | |
1285 | * Ok, we have the rule, now apply it | |
1286 | */ | |
1287 | if (rule == CIPHER_SPECIAL) { /* special command */ | |
1288 | ok = 0; | |
86885c28 | 1289 | if ((buflen == 8) && strncmp(buf, "STRENGTH", 8) == 0) |
0f113f3e | 1290 | ok = ssl_cipher_strength_sort(head_p, tail_p); |
86885c28 | 1291 | else if (buflen == 10 && strncmp(buf, "SECLEVEL=", 9) == 0) { |
0f113f3e MC |
1292 | int level = buf[9] - '0'; |
1293 | if (level < 0 || level > 5) { | |
1294 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, | |
1295 | SSL_R_INVALID_COMMAND); | |
1296 | } else { | |
1297 | c->sec_level = level; | |
1298 | ok = 1; | |
1299 | } | |
1300 | } else | |
1301 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, | |
1302 | SSL_R_INVALID_COMMAND); | |
1303 | if (ok == 0) | |
1304 | retval = 0; | |
1305 | /* | |
1306 | * We do not support any "multi" options | |
1307 | * together with "@", so throw away the | |
1308 | * rest of the command, if any left, until | |
1309 | * end or ':' is found. | |
1310 | */ | |
1311 | while ((*l != '\0') && !ITEM_SEP(*l)) | |
1312 | l++; | |
1313 | } else if (found) { | |
1314 | ssl_cipher_apply_rule(cipher_id, | |
1315 | alg_mkey, alg_auth, alg_enc, alg_mac, | |
1316 | alg_ssl, algo_strength, rule, -1, head_p, | |
1317 | tail_p); | |
1318 | } else { | |
1319 | while ((*l != '\0') && !ITEM_SEP(*l)) | |
1320 | l++; | |
1321 | } | |
1322 | if (*l == '\0') | |
1323 | break; /* done */ | |
1324 | } | |
1325 | ||
1326 | return (retval); | |
1327 | } | |
1328 | ||
14536c8c | 1329 | #ifndef OPENSSL_NO_EC |
2ea80354 | 1330 | static int check_suiteb_cipher_list(const SSL_METHOD *meth, CERT *c, |
0f113f3e MC |
1331 | const char **prule_str) |
1332 | { | |
1333 | unsigned int suiteb_flags = 0, suiteb_comb2 = 0; | |
86885c28 | 1334 | if (strcmp(*prule_str, "SUITEB128") == 0) |
0f113f3e | 1335 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS; |
86885c28 | 1336 | else if (strcmp(*prule_str, "SUITEB128ONLY") == 0) |
0f113f3e | 1337 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS_ONLY; |
86885c28 | 1338 | else if (strcmp(*prule_str, "SUITEB128C2") == 0) { |
0f113f3e MC |
1339 | suiteb_comb2 = 1; |
1340 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS; | |
86885c28 | 1341 | } else if (strcmp(*prule_str, "SUITEB192") == 0) |
0f113f3e MC |
1342 | suiteb_flags = SSL_CERT_FLAG_SUITEB_192_LOS; |
1343 | ||
1344 | if (suiteb_flags) { | |
1345 | c->cert_flags &= ~SSL_CERT_FLAG_SUITEB_128_LOS; | |
1346 | c->cert_flags |= suiteb_flags; | |
1347 | } else | |
1348 | suiteb_flags = c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS; | |
1349 | ||
1350 | if (!suiteb_flags) | |
1351 | return 1; | |
1352 | /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */ | |
1353 | ||
1354 | if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)) { | |
1355 | if (meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) | |
1356 | SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST, | |
1357 | SSL_R_ONLY_DTLS_1_2_ALLOWED_IN_SUITEB_MODE); | |
1358 | else | |
1359 | SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST, | |
1360 | SSL_R_ONLY_TLS_1_2_ALLOWED_IN_SUITEB_MODE); | |
1361 | return 0; | |
1362 | } | |
10bf4fc2 | 1363 | # ifndef OPENSSL_NO_EC |
0f113f3e MC |
1364 | switch (suiteb_flags) { |
1365 | case SSL_CERT_FLAG_SUITEB_128_LOS: | |
1366 | if (suiteb_comb2) | |
1367 | *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1368 | else | |
1369 | *prule_str = | |
1370 | "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1371 | break; | |
1372 | case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY: | |
1373 | *prule_str = "ECDHE-ECDSA-AES128-GCM-SHA256"; | |
1374 | break; | |
1375 | case SSL_CERT_FLAG_SUITEB_192_LOS: | |
1376 | *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1377 | break; | |
1378 | } | |
1379 | /* Set auto ECDH parameter determination */ | |
1380 | c->ecdh_tmp_auto = 1; | |
1381 | return 1; | |
1382 | # else | |
1383 | SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST, | |
1384 | SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE); | |
1385 | return 0; | |
1386 | # endif | |
1387 | } | |
14536c8c | 1388 | #endif |
2ea80354 | 1389 | |
0f113f3e MC |
1390 | STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER) |
1391 | **cipher_list, STACK_OF(SSL_CIPHER) | |
1392 | **cipher_list_by_id, | |
1393 | const char *rule_str, CERT *c) | |
1394 | { | |
1395 | int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; | |
1396 | unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, | |
1397 | disabled_ssl; | |
1398 | STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; | |
1399 | const char *rule_p; | |
1400 | CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; | |
1401 | const SSL_CIPHER **ca_list = NULL; | |
1402 | ||
1403 | /* | |
1404 | * Return with error if nothing to do. | |
1405 | */ | |
1406 | if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) | |
1407 | return NULL; | |
14536c8c | 1408 | #ifndef OPENSSL_NO_EC |
0f113f3e MC |
1409 | if (!check_suiteb_cipher_list(ssl_method, c, &rule_str)) |
1410 | return NULL; | |
14536c8c | 1411 | #endif |
2ea80354 | 1412 | |
0f113f3e MC |
1413 | /* |
1414 | * To reduce the work to do we only want to process the compiled | |
1415 | * in algorithms, so we first get the mask of disabled ciphers. | |
1416 | */ | |
633d49c7 DSH |
1417 | |
1418 | disabled_mkey = disabled_mkey_mask; | |
1419 | disabled_auth = disabled_auth_mask; | |
1420 | disabled_enc = disabled_enc_mask; | |
1421 | disabled_mac = disabled_mac_mask; | |
1422 | disabled_ssl = 0; | |
0f113f3e MC |
1423 | |
1424 | /* | |
1425 | * Now we have to collect the available ciphers from the compiled | |
1426 | * in ciphers. We cannot get more than the number compiled in, so | |
1427 | * it is used for allocation. | |
1428 | */ | |
1429 | num_of_ciphers = ssl_method->num_ciphers(); | |
55a9a16f | 1430 | |
b4faea50 | 1431 | co_list = OPENSSL_malloc(sizeof(*co_list) * num_of_ciphers); |
0f113f3e MC |
1432 | if (co_list == NULL) { |
1433 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); | |
1434 | return (NULL); /* Failure */ | |
1435 | } | |
1436 | ||
1437 | ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, | |
1438 | disabled_mkey, disabled_auth, disabled_enc, | |
1439 | disabled_mac, disabled_ssl, co_list, &head, | |
1440 | &tail); | |
1441 | ||
1442 | /* Now arrange all ciphers by preference: */ | |
1443 | ||
1444 | /* | |
1445 | * Everything else being equal, prefer ephemeral ECDH over other key | |
1446 | * exchange mechanisms | |
1447 | */ | |
1448 | ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, | |
1449 | &tail); | |
1450 | ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, | |
1451 | &tail); | |
1452 | ||
1453 | /* AES is our preferred symmetric cipher */ | |
1454 | ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, | |
1455 | &tail); | |
1456 | ||
1457 | /* Temporarily enable everything else for sorting */ | |
1458 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); | |
1459 | ||
1460 | /* Low priority for MD5 */ | |
1461 | ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, | |
1462 | &tail); | |
1463 | ||
1464 | /* | |
1465 | * Move anonymous ciphers to the end. Usually, these will remain | |
1466 | * disabled. (For applications that allow them, they aren't too bad, but | |
1467 | * we prefer authenticated ciphers.) | |
1468 | */ | |
1469 | ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1470 | &tail); | |
1471 | ||
1472 | /* Move ciphers without forward secrecy to the end */ | |
1473 | ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1474 | &tail); | |
1475 | /* | |
1476 | * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, | |
1477 | * &head, &tail); | |
1478 | */ | |
1479 | ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1480 | &tail); | |
1481 | ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1482 | &tail); | |
0f113f3e MC |
1483 | |
1484 | /* RC4 is sort-of broken -- move the the end */ | |
1485 | ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1486 | &tail); | |
1487 | ||
1488 | /* | |
1489 | * Now sort by symmetric encryption strength. The above ordering remains | |
1490 | * in force within each class | |
1491 | */ | |
1492 | if (!ssl_cipher_strength_sort(&head, &tail)) { | |
1493 | OPENSSL_free(co_list); | |
1494 | return NULL; | |
1495 | } | |
1496 | ||
1497 | /* Now disable everything (maintaining the ordering!) */ | |
1498 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); | |
1499 | ||
1500 | /* | |
1501 | * We also need cipher aliases for selecting based on the rule_str. | |
1502 | * There might be two types of entries in the rule_str: 1) names | |
1503 | * of ciphers themselves 2) aliases for groups of ciphers. | |
1504 | * For 1) we need the available ciphers and for 2) the cipher | |
1505 | * groups of cipher_aliases added together in one list (otherwise | |
1506 | * we would be happy with just the cipher_aliases table). | |
1507 | */ | |
b6eb9827 | 1508 | num_of_group_aliases = OSSL_NELEM(cipher_aliases); |
0f113f3e | 1509 | num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; |
b4faea50 | 1510 | ca_list = OPENSSL_malloc(sizeof(*ca_list) * num_of_alias_max); |
0f113f3e MC |
1511 | if (ca_list == NULL) { |
1512 | OPENSSL_free(co_list); | |
1513 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); | |
1514 | return (NULL); /* Failure */ | |
1515 | } | |
1516 | ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, | |
1517 | disabled_mkey, disabled_auth, disabled_enc, | |
1518 | disabled_mac, disabled_ssl, head); | |
1519 | ||
1520 | /* | |
1521 | * If the rule_string begins with DEFAULT, apply the default rule | |
1522 | * before using the (possibly available) additional rules. | |
1523 | */ | |
1524 | ok = 1; | |
1525 | rule_p = rule_str; | |
1526 | if (strncmp(rule_str, "DEFAULT", 7) == 0) { | |
1527 | ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, | |
1528 | &head, &tail, ca_list, c); | |
1529 | rule_p += 7; | |
1530 | if (*rule_p == ':') | |
1531 | rule_p++; | |
1532 | } | |
1533 | ||
1534 | if (ok && (strlen(rule_p) > 0)) | |
1535 | ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list, c); | |
1536 | ||
b548a1f1 | 1537 | OPENSSL_free(ca_list); /* Not needed anymore */ |
0f113f3e MC |
1538 | |
1539 | if (!ok) { /* Rule processing failure */ | |
1540 | OPENSSL_free(co_list); | |
1541 | return (NULL); | |
1542 | } | |
1543 | ||
1544 | /* | |
1545 | * Allocate new "cipherstack" for the result, return with error | |
1546 | * if we cannot get one. | |
1547 | */ | |
1548 | if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) { | |
1549 | OPENSSL_free(co_list); | |
1550 | return (NULL); | |
1551 | } | |
1552 | ||
1553 | /* | |
1554 | * The cipher selection for the list is done. The ciphers are added | |
1555 | * to the resulting precedence to the STACK_OF(SSL_CIPHER). | |
1556 | */ | |
1557 | for (curr = head; curr != NULL; curr = curr->next) { | |
1558 | if (curr->active | |
1559 | && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) { | |
1560 | if (!sk_SSL_CIPHER_push(cipherstack, curr->cipher)) { | |
1561 | OPENSSL_free(co_list); | |
1562 | sk_SSL_CIPHER_free(cipherstack); | |
1563 | return NULL; | |
1564 | } | |
d02b48c6 | 1565 | #ifdef CIPHER_DEBUG |
0f113f3e | 1566 | fprintf(stderr, "<%s>\n", curr->cipher->name); |
d02b48c6 | 1567 | #endif |
0f113f3e MC |
1568 | } |
1569 | } | |
1570 | OPENSSL_free(co_list); /* Not needed any longer */ | |
1571 | ||
1572 | tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); | |
1573 | if (tmp_cipher_list == NULL) { | |
1574 | sk_SSL_CIPHER_free(cipherstack); | |
1575 | return NULL; | |
1576 | } | |
25aaa98a | 1577 | sk_SSL_CIPHER_free(*cipher_list); |
0f113f3e MC |
1578 | *cipher_list = cipherstack; |
1579 | if (*cipher_list_by_id != NULL) | |
1580 | sk_SSL_CIPHER_free(*cipher_list_by_id); | |
1581 | *cipher_list_by_id = tmp_cipher_list; | |
1582 | (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id, | |
1583 | ssl_cipher_ptr_id_cmp); | |
1584 | ||
1585 | sk_SSL_CIPHER_sort(*cipher_list_by_id); | |
1586 | return (cipherstack); | |
1587 | } | |
d02b48c6 | 1588 | |
7689ed34 | 1589 | char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) |
0f113f3e MC |
1590 | { |
1591 | int is_export, pkl, kl; | |
1592 | const char *ver, *exp_str; | |
1593 | const char *kx, *au, *enc, *mac; | |
1594 | unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl; | |
0f113f3e MC |
1595 | static const char *format = |
1596 | "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; | |
0f113f3e MC |
1597 | |
1598 | alg_mkey = cipher->algorithm_mkey; | |
1599 | alg_auth = cipher->algorithm_auth; | |
1600 | alg_enc = cipher->algorithm_enc; | |
1601 | alg_mac = cipher->algorithm_mac; | |
1602 | alg_ssl = cipher->algorithm_ssl; | |
1603 | ||
1604 | is_export = SSL_C_IS_EXPORT(cipher); | |
1605 | pkl = SSL_C_EXPORT_PKEYLENGTH(cipher); | |
1606 | kl = SSL_C_EXPORT_KEYLENGTH(cipher); | |
1607 | exp_str = is_export ? " export" : ""; | |
1608 | ||
1609 | if (alg_ssl & SSL_SSLV3) | |
1610 | ver = "SSLv3"; | |
1611 | else if (alg_ssl & SSL_TLSV1_2) | |
1612 | ver = "TLSv1.2"; | |
1613 | else | |
1614 | ver = "unknown"; | |
1615 | ||
1616 | switch (alg_mkey) { | |
1617 | case SSL_kRSA: | |
1618 | kx = is_export ? (pkl == 512 ? "RSA(512)" : "RSA(1024)") : "RSA"; | |
1619 | break; | |
1620 | case SSL_kDHr: | |
1621 | kx = "DH/RSA"; | |
1622 | break; | |
1623 | case SSL_kDHd: | |
1624 | kx = "DH/DSS"; | |
1625 | break; | |
0f113f3e MC |
1626 | case SSL_kDHE: |
1627 | kx = is_export ? (pkl == 512 ? "DH(512)" : "DH(1024)") : "DH"; | |
1628 | break; | |
1629 | case SSL_kECDHr: | |
1630 | kx = "ECDH/RSA"; | |
1631 | break; | |
1632 | case SSL_kECDHe: | |
1633 | kx = "ECDH/ECDSA"; | |
1634 | break; | |
1635 | case SSL_kECDHE: | |
1636 | kx = "ECDH"; | |
1637 | break; | |
1638 | case SSL_kPSK: | |
1639 | kx = "PSK"; | |
1640 | break; | |
8baac6a2 DSH |
1641 | case SSL_kRSAPSK: |
1642 | kx = "RSAPSK"; | |
1643 | break; | |
1644 | case SSL_kECDHEPSK: | |
1645 | kx = "ECDHEPSK"; | |
1646 | break; | |
1647 | case SSL_kDHEPSK: | |
1648 | kx = "DHEPSK"; | |
1649 | break; | |
0f113f3e MC |
1650 | case SSL_kSRP: |
1651 | kx = "SRP"; | |
1652 | break; | |
1653 | case SSL_kGOST: | |
1654 | kx = "GOST"; | |
1655 | break; | |
1656 | default: | |
1657 | kx = "unknown"; | |
1658 | } | |
1659 | ||
1660 | switch (alg_auth) { | |
1661 | case SSL_aRSA: | |
1662 | au = "RSA"; | |
1663 | break; | |
1664 | case SSL_aDSS: | |
1665 | au = "DSS"; | |
1666 | break; | |
1667 | case SSL_aDH: | |
1668 | au = "DH"; | |
1669 | break; | |
0f113f3e MC |
1670 | case SSL_aECDH: |
1671 | au = "ECDH"; | |
1672 | break; | |
1673 | case SSL_aNULL: | |
1674 | au = "None"; | |
1675 | break; | |
1676 | case SSL_aECDSA: | |
1677 | au = "ECDSA"; | |
1678 | break; | |
1679 | case SSL_aPSK: | |
1680 | au = "PSK"; | |
1681 | break; | |
1682 | case SSL_aSRP: | |
1683 | au = "SRP"; | |
1684 | break; | |
0f113f3e MC |
1685 | case SSL_aGOST01: |
1686 | au = "GOST01"; | |
1687 | break; | |
1688 | default: | |
1689 | au = "unknown"; | |
1690 | break; | |
1691 | } | |
1692 | ||
1693 | switch (alg_enc) { | |
1694 | case SSL_DES: | |
1695 | enc = (is_export && kl == 5) ? "DES(40)" : "DES(56)"; | |
1696 | break; | |
1697 | case SSL_3DES: | |
1698 | enc = "3DES(168)"; | |
1699 | break; | |
1700 | case SSL_RC4: | |
1701 | enc = is_export ? (kl == 5 ? "RC4(40)" : "RC4(56)") : "RC4(128)"; | |
1702 | break; | |
1703 | case SSL_RC2: | |
1704 | enc = is_export ? (kl == 5 ? "RC2(40)" : "RC2(56)") : "RC2(128)"; | |
1705 | break; | |
1706 | case SSL_IDEA: | |
1707 | enc = "IDEA(128)"; | |
1708 | break; | |
1709 | case SSL_eNULL: | |
1710 | enc = "None"; | |
1711 | break; | |
1712 | case SSL_AES128: | |
1713 | enc = "AES(128)"; | |
1714 | break; | |
1715 | case SSL_AES256: | |
1716 | enc = "AES(256)"; | |
1717 | break; | |
1718 | case SSL_AES128GCM: | |
1719 | enc = "AESGCM(128)"; | |
1720 | break; | |
1721 | case SSL_AES256GCM: | |
1722 | enc = "AESGCM(256)"; | |
1723 | break; | |
e75c5a79 DSH |
1724 | case SSL_AES128CCM: |
1725 | enc = "AESCCM(128)"; | |
1726 | break; | |
1727 | case SSL_AES256CCM: | |
1728 | enc = "AESCCM(256)"; | |
1729 | break; | |
3d3701ea DSH |
1730 | case SSL_AES128CCM8: |
1731 | enc = "AESCCM8(128)"; | |
1732 | break; | |
1733 | case SSL_AES256CCM8: | |
1734 | enc = "AESCCM8(256)"; | |
1735 | break; | |
0f113f3e MC |
1736 | case SSL_CAMELLIA128: |
1737 | enc = "Camellia(128)"; | |
1738 | break; | |
1739 | case SSL_CAMELLIA256: | |
1740 | enc = "Camellia(256)"; | |
1741 | break; | |
1742 | case SSL_SEED: | |
1743 | enc = "SEED(128)"; | |
1744 | break; | |
1745 | case SSL_eGOST2814789CNT: | |
1746 | enc = "GOST89(256)"; | |
1747 | break; | |
1748 | default: | |
1749 | enc = "unknown"; | |
1750 | break; | |
1751 | } | |
1752 | ||
1753 | switch (alg_mac) { | |
1754 | case SSL_MD5: | |
1755 | mac = "MD5"; | |
1756 | break; | |
1757 | case SSL_SHA1: | |
1758 | mac = "SHA1"; | |
1759 | break; | |
1760 | case SSL_SHA256: | |
1761 | mac = "SHA256"; | |
1762 | break; | |
1763 | case SSL_SHA384: | |
1764 | mac = "SHA384"; | |
1765 | break; | |
1766 | case SSL_AEAD: | |
1767 | mac = "AEAD"; | |
1768 | break; | |
1769 | case SSL_GOST89MAC: | |
1770 | mac = "GOST89"; | |
1771 | break; | |
1772 | case SSL_GOST94: | |
1773 | mac = "GOST94"; | |
1774 | break; | |
1775 | default: | |
1776 | mac = "unknown"; | |
1777 | break; | |
1778 | } | |
1779 | ||
1780 | if (buf == NULL) { | |
1781 | len = 128; | |
1782 | buf = OPENSSL_malloc(len); | |
1783 | if (buf == NULL) | |
1784 | return ("OPENSSL_malloc Error"); | |
1785 | } else if (len < 128) | |
1786 | return ("Buffer too small"); | |
d02b48c6 | 1787 | |
0f113f3e MC |
1788 | BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac, |
1789 | exp_str); | |
55a9a16f | 1790 | |
0f113f3e MC |
1791 | return (buf); |
1792 | } | |
d02b48c6 | 1793 | |
0821bcd4 | 1794 | char *SSL_CIPHER_get_version(const SSL_CIPHER *c) |
0f113f3e MC |
1795 | { |
1796 | int i; | |
1797 | ||
1798 | if (c == NULL) | |
1799 | return ("(NONE)"); | |
1800 | i = (int)(c->id >> 24L); | |
1801 | if (i == 3) | |
1802 | return ("TLSv1/SSLv3"); | |
1803 | else | |
1804 | return ("unknown"); | |
1805 | } | |
d02b48c6 RE |
1806 | |
1807 | /* return the actual cipher being used */ | |
0821bcd4 | 1808 | const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) |
0f113f3e MC |
1809 | { |
1810 | if (c != NULL) | |
1811 | return (c->name); | |
1812 | return ("(NONE)"); | |
1813 | } | |
d02b48c6 | 1814 | |
657e60fa | 1815 | /* number of bits for symmetric cipher */ |
0821bcd4 | 1816 | int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) |
0f113f3e MC |
1817 | { |
1818 | int ret = 0; | |
1819 | ||
1820 | if (c != NULL) { | |
1821 | if (alg_bits != NULL) | |
1822 | *alg_bits = c->alg_bits; | |
1823 | ret = c->strength_bits; | |
1824 | } | |
1825 | return (ret); | |
1826 | } | |
d02b48c6 | 1827 | |
08557cf2 | 1828 | unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c) |
0f113f3e MC |
1829 | { |
1830 | return c->id; | |
1831 | } | |
08557cf2 | 1832 | |
6b691a5c | 1833 | SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) |
0f113f3e MC |
1834 | { |
1835 | SSL_COMP *ctmp; | |
1836 | int i, nn; | |
1837 | ||
1838 | if ((n == 0) || (sk == NULL)) | |
1839 | return (NULL); | |
1840 | nn = sk_SSL_COMP_num(sk); | |
1841 | for (i = 0; i < nn; i++) { | |
1842 | ctmp = sk_SSL_COMP_value(sk, i); | |
1843 | if (ctmp->id == n) | |
1844 | return (ctmp); | |
1845 | } | |
1846 | return (NULL); | |
1847 | } | |
413c4f45 | 1848 | |
09b6c2ef | 1849 | #ifdef OPENSSL_NO_COMP |
9a555706 | 1850 | STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) |
0f113f3e MC |
1851 | { |
1852 | return NULL; | |
1853 | } | |
9a555706 RS |
1854 | STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP) |
1855 | *meths) | |
0f113f3e | 1856 | { |
9a555706 | 1857 | return meths; |
0f113f3e | 1858 | } |
9a555706 | 1859 | void SSL_COMP_free_compression_methods(void) |
0f113f3e | 1860 | { |
0f113f3e | 1861 | } |
9a555706 RS |
1862 | int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) |
1863 | { | |
1864 | return 1; | |
1865 | } | |
1866 | ||
09b6c2ef | 1867 | #else |
6b691a5c | 1868 | STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) |
0f113f3e MC |
1869 | { |
1870 | load_builtin_compressions(); | |
1871 | return (ssl_comp_methods); | |
1872 | } | |
1873 | ||
1874 | STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP) | |
1875 | *meths) | |
1876 | { | |
1877 | STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods; | |
1878 | ssl_comp_methods = meths; | |
1879 | return old_meths; | |
1880 | } | |
cbb67448 | 1881 | |
db7b5e0d | 1882 | static void cmeth_free(SSL_COMP *cm) |
0f113f3e MC |
1883 | { |
1884 | OPENSSL_free(cm); | |
1885 | } | |
db7b5e0d DSH |
1886 | |
1887 | void SSL_COMP_free_compression_methods(void) | |
0f113f3e MC |
1888 | { |
1889 | STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods; | |
1890 | ssl_comp_methods = NULL; | |
1891 | sk_SSL_COMP_pop_free(old_meths, cmeth_free); | |
1892 | } | |
db7b5e0d | 1893 | |
6b691a5c | 1894 | int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) |
0f113f3e MC |
1895 | { |
1896 | SSL_COMP *comp; | |
413c4f45 | 1897 | |
9a555706 | 1898 | if (cm == NULL || COMP_get_type(cm) == NID_undef) |
0f113f3e | 1899 | return 1; |
9f495243 | 1900 | |
50e735f9 MC |
1901 | /*- |
1902 | * According to draft-ietf-tls-compression-04.txt, the | |
1903 | * compression number ranges should be the following: | |
1904 | * | |
1905 | * 0 to 63: methods defined by the IETF | |
1906 | * 64 to 192: external party methods assigned by IANA | |
1907 | * 193 to 255: reserved for private use | |
1908 | */ | |
0f113f3e MC |
1909 | if (id < 193 || id > 255) { |
1910 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, | |
1911 | SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); | |
1912 | return 0; | |
1913 | } | |
1914 | ||
1915 | MemCheck_off(); | |
b4faea50 | 1916 | comp = OPENSSL_malloc(sizeof(*comp)); |
0f113f3e MC |
1917 | if (comp == NULL) { |
1918 | MemCheck_on(); | |
1919 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE); | |
1920 | return (1); | |
1921 | } | |
1922 | ||
1923 | comp->id = id; | |
1924 | comp->method = cm; | |
1925 | load_builtin_compressions(); | |
1926 | if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) { | |
1927 | OPENSSL_free(comp); | |
1928 | MemCheck_on(); | |
1929 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, | |
1930 | SSL_R_DUPLICATE_COMPRESSION_ID); | |
1931 | return (1); | |
1932 | } else if ((ssl_comp_methods == NULL) | |
1933 | || !sk_SSL_COMP_push(ssl_comp_methods, comp)) { | |
1934 | OPENSSL_free(comp); | |
1935 | MemCheck_on(); | |
1936 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE); | |
1937 | return (1); | |
1938 | } else { | |
1939 | MemCheck_on(); | |
1940 | return (0); | |
1941 | } | |
1942 | } | |
9a555706 | 1943 | #endif |
377dcdba RL |
1944 | |
1945 | const char *SSL_COMP_get_name(const COMP_METHOD *comp) | |
0f113f3e | 1946 | { |
9a555706 RS |
1947 | #ifndef OPENSSL_NO_COMP |
1948 | return comp ? COMP_get_name(comp) : NULL; | |
1949 | #else | |
0f113f3e | 1950 | return NULL; |
09b6c2ef | 1951 | #endif |
9a555706 RS |
1952 | } |
1953 | ||
d47c01a3 DSH |
1954 | /* For a cipher return the index corresponding to the certificate type */ |
1955 | int ssl_cipher_get_cert_index(const SSL_CIPHER *c) | |
0f113f3e MC |
1956 | { |
1957 | unsigned long alg_k, alg_a; | |
1958 | ||
1959 | alg_k = c->algorithm_mkey; | |
1960 | alg_a = c->algorithm_auth; | |
1961 | ||
1962 | if (alg_k & (SSL_kECDHr | SSL_kECDHe)) { | |
1963 | /* | |
1964 | * we don't need to look at SSL_kECDHE since no certificate is needed | |
1965 | * for anon ECDH and for authenticated ECDHE, the check for the auth | |
1966 | * algorithm will set i correctly NOTE: For ECDH-RSA, we need an ECC | |
1967 | * not an RSA cert but for ECDHE-RSA we need an RSA cert. Placing the | |
1968 | * checks for SSL_kECDH before RSA checks ensures the correct cert is | |
1969 | * chosen. | |
1970 | */ | |
1971 | return SSL_PKEY_ECC; | |
1972 | } else if (alg_a & SSL_aECDSA) | |
1973 | return SSL_PKEY_ECC; | |
1974 | else if (alg_k & SSL_kDHr) | |
1975 | return SSL_PKEY_DH_RSA; | |
1976 | else if (alg_k & SSL_kDHd) | |
1977 | return SSL_PKEY_DH_DSA; | |
1978 | else if (alg_a & SSL_aDSS) | |
1979 | return SSL_PKEY_DSA_SIGN; | |
1980 | else if (alg_a & SSL_aRSA) | |
1981 | return SSL_PKEY_RSA_ENC; | |
0f113f3e MC |
1982 | else if (alg_a & SSL_aGOST01) |
1983 | return SSL_PKEY_GOST01; | |
1984 | return -1; | |
1985 | } | |
d47c01a3 | 1986 | |
94a209d8 | 1987 | const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr) |
0f113f3e MC |
1988 | { |
1989 | const SSL_CIPHER *c; | |
1990 | c = ssl->method->get_cipher_by_char(ptr); | |
1991 | if (c == NULL || c->valid == 0) | |
1992 | return NULL; | |
1993 | return c; | |
1994 | } | |
94a209d8 DSH |
1995 | |
1996 | const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr) | |
0f113f3e MC |
1997 | { |
1998 | return ssl->method->get_cipher_by_char(ptr); | |
1999 | } | |
98c9ce2f DSH |
2000 | |
2001 | int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c) | |
2002 | { | |
2003 | int i; | |
2004 | if (c == NULL) | |
2005 | return -1; | |
2006 | i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc); | |
2007 | if (i == -1) | |
2008 | return -1; | |
2009 | return ssl_cipher_table_cipher[i].nid; | |
2010 | } | |
2011 | ||
2012 | int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c) | |
2013 | { | |
2014 | int i; | |
2015 | if (c == NULL) | |
2016 | return -1; | |
2017 | i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac); | |
2018 | if (i == -1) | |
2019 | return -1; | |
2020 | return ssl_cipher_table_mac[i].nid; | |
2021 | } |