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846e33c7 RS |
1 | /* |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | |
675f605d | 3 | * |
846e33c7 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
675f605d | 8 | */ |
846e33c7 | 9 | |
ea262260 BM |
10 | /* ==================================================================== |
11 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
0f113f3e | 12 | * ECC cipher suite support in OpenSSL originally developed by |
ea262260 BM |
13 | * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. |
14 | */ | |
ddac1974 NL |
15 | /* ==================================================================== |
16 | * Copyright 2005 Nokia. All rights reserved. | |
17 | * | |
18 | * The portions of the attached software ("Contribution") is developed by | |
19 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source | |
20 | * license. | |
21 | * | |
22 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of | |
23 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites | |
24 | * support (see RFC 4279) to OpenSSL. | |
25 | * | |
26 | * No patent licenses or other rights except those expressly stated in | |
27 | * the OpenSSL open source license shall be deemed granted or received | |
28 | * expressly, by implication, estoppel, or otherwise. | |
29 | * | |
30 | * No assurances are provided by Nokia that the Contribution does not | |
31 | * infringe the patent or other intellectual property rights of any third | |
32 | * party or that the license provides you with all the necessary rights | |
33 | * to make use of the Contribution. | |
34 | * | |
35 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN | |
36 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA | |
37 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY | |
38 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR | |
39 | * OTHERWISE. | |
40 | */ | |
41 | ||
d02b48c6 | 42 | #include <stdio.h> |
5fd1478d | 43 | #include <ctype.h> |
ec577822 | 44 | #include <openssl/objects.h> |
3c27208f RS |
45 | #include <openssl/comp.h> |
46 | #include <openssl/engine.h> | |
5c4328f0 | 47 | #include <openssl/crypto.h> |
d02b48c6 | 48 | #include "ssl_locl.h" |
c2e4e5d2 | 49 | #include "internal/thread_once.h" |
d02b48c6 | 50 | |
0f113f3e MC |
51 | #define SSL_ENC_DES_IDX 0 |
52 | #define SSL_ENC_3DES_IDX 1 | |
53 | #define SSL_ENC_RC4_IDX 2 | |
54 | #define SSL_ENC_RC2_IDX 3 | |
55 | #define SSL_ENC_IDEA_IDX 4 | |
56 | #define SSL_ENC_NULL_IDX 5 | |
57 | #define SSL_ENC_AES128_IDX 6 | |
58 | #define SSL_ENC_AES256_IDX 7 | |
59 | #define SSL_ENC_CAMELLIA128_IDX 8 | |
60 | #define SSL_ENC_CAMELLIA256_IDX 9 | |
61 | #define SSL_ENC_GOST89_IDX 10 | |
62 | #define SSL_ENC_SEED_IDX 11 | |
63 | #define SSL_ENC_AES128GCM_IDX 12 | |
64 | #define SSL_ENC_AES256GCM_IDX 13 | |
e75c5a79 DSH |
65 | #define SSL_ENC_AES128CCM_IDX 14 |
66 | #define SSL_ENC_AES256CCM_IDX 15 | |
3d3701ea DSH |
67 | #define SSL_ENC_AES128CCM8_IDX 16 |
68 | #define SSL_ENC_AES256CCM8_IDX 17 | |
e44380a9 | 69 | #define SSL_ENC_GOST8912_IDX 18 |
a76ba82c AP |
70 | #define SSL_ENC_CHACHA_IDX 19 |
71 | #define SSL_ENC_NUM_IDX 20 | |
0f113f3e | 72 | |
98c9ce2f DSH |
73 | /* NB: make sure indices in these tables match values above */ |
74 | ||
75 | typedef struct { | |
90d9e49a | 76 | uint32_t mask; |
98c9ce2f DSH |
77 | int nid; |
78 | } ssl_cipher_table; | |
79 | ||
80 | /* Table of NIDs for each cipher */ | |
81 | static const ssl_cipher_table ssl_cipher_table_cipher[SSL_ENC_NUM_IDX] = { | |
82 | {SSL_DES, NID_des_cbc}, /* SSL_ENC_DES_IDX 0 */ | |
83 | {SSL_3DES, NID_des_ede3_cbc}, /* SSL_ENC_3DES_IDX 1 */ | |
84 | {SSL_RC4, NID_rc4}, /* SSL_ENC_RC4_IDX 2 */ | |
85 | {SSL_RC2, NID_rc2_cbc}, /* SSL_ENC_RC2_IDX 3 */ | |
86 | {SSL_IDEA, NID_idea_cbc}, /* SSL_ENC_IDEA_IDX 4 */ | |
87 | {SSL_eNULL, NID_undef}, /* SSL_ENC_NULL_IDX 5 */ | |
88 | {SSL_AES128, NID_aes_128_cbc}, /* SSL_ENC_AES128_IDX 6 */ | |
89 | {SSL_AES256, NID_aes_256_cbc}, /* SSL_ENC_AES256_IDX 7 */ | |
90 | {SSL_CAMELLIA128, NID_camellia_128_cbc}, /* SSL_ENC_CAMELLIA128_IDX 8 */ | |
91 | {SSL_CAMELLIA256, NID_camellia_256_cbc}, /* SSL_ENC_CAMELLIA256_IDX 9 */ | |
92 | {SSL_eGOST2814789CNT, NID_gost89_cnt}, /* SSL_ENC_GOST89_IDX 10 */ | |
93 | {SSL_SEED, NID_seed_cbc}, /* SSL_ENC_SEED_IDX 11 */ | |
94 | {SSL_AES128GCM, NID_aes_128_gcm}, /* SSL_ENC_AES128GCM_IDX 12 */ | |
e75c5a79 DSH |
95 | {SSL_AES256GCM, NID_aes_256_gcm}, /* SSL_ENC_AES256GCM_IDX 13 */ |
96 | {SSL_AES128CCM, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM_IDX 14 */ | |
3d3701ea DSH |
97 | {SSL_AES256CCM, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM_IDX 15 */ |
98 | {SSL_AES128CCM8, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM8_IDX 16 */ | |
e44380a9 DB |
99 | {SSL_AES256CCM8, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM8_IDX 17 */ |
100 | {SSL_eGOST2814789CNT12, NID_gost89_cnt_12}, /* SSL_ENC_GOST8912_IDX */ | |
a76ba82c | 101 | {SSL_CHACHA20POLY1305, NID_chacha20_poly1305}, |
98c9ce2f DSH |
102 | }; |
103 | ||
d42d0a4d | 104 | static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]; |
0f113f3e MC |
105 | |
106 | #define SSL_COMP_NULL_IDX 0 | |
107 | #define SSL_COMP_ZLIB_IDX 1 | |
108 | #define SSL_COMP_NUM_IDX 2 | |
109 | ||
110 | static STACK_OF(SSL_COMP) *ssl_comp_methods = NULL; | |
111 | ||
e4ad0763 | 112 | #ifndef OPENSSL_NO_COMP |
16203f7b | 113 | static CRYPTO_ONCE ssl_load_builtin_comp_once = CRYPTO_ONCE_STATIC_INIT; |
e4ad0763 | 114 | #endif |
16203f7b | 115 | |
0f113f3e MC |
116 | /* |
117 | * Constant SSL_MAX_DIGEST equal to size of digests array should be defined | |
118 | * in the ssl_locl.h | |
b948e2c5 | 119 | */ |
98c9ce2f | 120 | |
0f113f3e | 121 | #define SSL_MD_NUM_IDX SSL_MAX_DIGEST |
98c9ce2f DSH |
122 | |
123 | /* NB: make sure indices in this table matches values above */ | |
124 | static const ssl_cipher_table ssl_cipher_table_mac[SSL_MD_NUM_IDX] = { | |
125 | {SSL_MD5, NID_md5}, /* SSL_MD_MD5_IDX 0 */ | |
126 | {SSL_SHA1, NID_sha1}, /* SSL_MD_SHA1_IDX 1 */ | |
127 | {SSL_GOST94, NID_id_GostR3411_94}, /* SSL_MD_GOST94_IDX 2 */ | |
128 | {SSL_GOST89MAC, NID_id_Gost28147_89_MAC}, /* SSL_MD_GOST89MAC_IDX 3 */ | |
129 | {SSL_SHA256, NID_sha256}, /* SSL_MD_SHA256_IDX 4 */ | |
e44380a9 | 130 | {SSL_SHA384, NID_sha384}, /* SSL_MD_SHA384_IDX 5 */ |
a230b26e EK |
131 | {SSL_GOST12_256, NID_id_GostR3411_2012_256}, /* SSL_MD_GOST12_256_IDX 6 */ |
132 | {SSL_GOST89MAC12, NID_gost_mac_12}, /* SSL_MD_GOST89MAC12_IDX 7 */ | |
133 | {SSL_GOST12_512, NID_id_GostR3411_2012_512}, /* SSL_MD_GOST12_512_IDX 8 */ | |
7afd2312 DSH |
134 | {0, NID_md5_sha1}, /* SSL_MD_MD5_SHA1_IDX 9 */ |
135 | {0, NID_sha224}, /* SSL_MD_SHA224_IDX 10 */ | |
136 | {0, NID_sha512} /* SSL_MD_SHA512_IDX 11 */ | |
98c9ce2f DSH |
137 | }; |
138 | ||
0f113f3e | 139 | static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX] = { |
7afd2312 | 140 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL |
0f113f3e MC |
141 | }; |
142 | ||
a230b26e | 143 | /* *INDENT-OFF* */ |
3ec13237 | 144 | static const ssl_cipher_table ssl_cipher_table_kx[] = { |
a230b26e EK |
145 | {SSL_kRSA, NID_kx_rsa}, |
146 | {SSL_kECDHE, NID_kx_ecdhe}, | |
147 | {SSL_kDHE, NID_kx_dhe}, | |
148 | {SSL_kECDHEPSK, NID_kx_ecdhe_psk}, | |
149 | {SSL_kDHEPSK, NID_kx_dhe_psk}, | |
150 | {SSL_kRSAPSK, NID_kx_rsa_psk}, | |
151 | {SSL_kPSK, NID_kx_psk}, | |
152 | {SSL_kSRP, NID_kx_srp}, | |
7114af30 DSH |
153 | {SSL_kGOST, NID_kx_gost}, |
154 | {SSL_kANY, NID_kx_any} | |
3ec13237 TS |
155 | }; |
156 | ||
157 | static const ssl_cipher_table ssl_cipher_table_auth[] = { | |
a230b26e EK |
158 | {SSL_aRSA, NID_auth_rsa}, |
159 | {SSL_aECDSA, NID_auth_ecdsa}, | |
160 | {SSL_aPSK, NID_auth_psk}, | |
161 | {SSL_aDSS, NID_auth_dss}, | |
162 | {SSL_aGOST01, NID_auth_gost01}, | |
163 | {SSL_aGOST12, NID_auth_gost12}, | |
164 | {SSL_aSRP, NID_auth_srp}, | |
7114af30 DSH |
165 | {SSL_aNULL, NID_auth_null}, |
166 | {SSL_aANY, NID_auth_any} | |
3ec13237 | 167 | }; |
a230b26e | 168 | /* *INDENT-ON* */ |
3ec13237 | 169 | |
98c9ce2f DSH |
170 | /* Utility function for table lookup */ |
171 | static int ssl_cipher_info_find(const ssl_cipher_table * table, | |
90d9e49a | 172 | size_t table_cnt, uint32_t mask) |
98c9ce2f DSH |
173 | { |
174 | size_t i; | |
175 | for (i = 0; i < table_cnt; i++, table++) { | |
176 | if (table->mask == mask) | |
348240c6 | 177 | return (int)i; |
98c9ce2f DSH |
178 | } |
179 | return -1; | |
180 | } | |
181 | ||
182 | #define ssl_cipher_info_lookup(table, x) \ | |
b6eb9827 | 183 | ssl_cipher_info_find(table, OSSL_NELEM(table), x) |
98c9ce2f | 184 | |
0f113f3e MC |
185 | /* |
186 | * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation | |
187 | * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is | |
188 | * found | |
189 | */ | |
190 | static int ssl_mac_pkey_id[SSL_MD_NUM_IDX] = { | |
e44380a9 | 191 | /* MD5, SHA, GOST94, MAC89 */ |
0f113f3e | 192 | EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef, |
e44380a9 DB |
193 | /* SHA256, SHA384, GOST2012_256, MAC89-12 */ |
194 | EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef, | |
195 | /* GOST2012_512 */ | |
196 | EVP_PKEY_HMAC, | |
0f113f3e MC |
197 | }; |
198 | ||
8c1a5343 | 199 | static size_t ssl_mac_secret_size[SSL_MD_NUM_IDX]; |
0f113f3e MC |
200 | |
201 | #define CIPHER_ADD 1 | |
202 | #define CIPHER_KILL 2 | |
203 | #define CIPHER_DEL 3 | |
204 | #define CIPHER_ORD 4 | |
205 | #define CIPHER_SPECIAL 5 | |
a556f342 EK |
206 | /* |
207 | * Bump the ciphers to the top of the list. | |
208 | * This rule isn't currently supported by the public cipherstring API. | |
209 | */ | |
210 | #define CIPHER_BUMP 6 | |
0f113f3e MC |
211 | |
212 | typedef struct cipher_order_st { | |
213 | const SSL_CIPHER *cipher; | |
214 | int active; | |
215 | int dead; | |
216 | struct cipher_order_st *next, *prev; | |
217 | } CIPHER_ORDER; | |
218 | ||
219 | static const SSL_CIPHER cipher_aliases[] = { | |
220 | /* "ALL" doesn't include eNULL (must be specifically enabled) */ | |
e5f969a8 | 221 | {0, SSL_TXT_ALL, 0, 0, 0, ~SSL_eNULL}, |
0f113f3e | 222 | /* "COMPLEMENTOFALL" */ |
e5f969a8 | 223 | {0, SSL_TXT_CMPALL, 0, 0, 0, SSL_eNULL}, |
0f113f3e MC |
224 | |
225 | /* | |
226 | * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in | |
227 | * ALL!) | |
228 | */ | |
e5f969a8 | 229 | {0, SSL_TXT_CMPDEF, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_NOT_DEFAULT}, |
0f113f3e MC |
230 | |
231 | /* | |
232 | * key exchange aliases (some of those using only a single bit here | |
233 | * combine multiple key exchange algs according to the RFCs, e.g. kDHE | |
234 | * combines DHE_DSS and DHE_RSA) | |
235 | */ | |
e5f969a8 | 236 | {0, SSL_TXT_kRSA, 0, SSL_kRSA}, |
0f113f3e | 237 | |
e5f969a8 RS |
238 | {0, SSL_TXT_kEDH, 0, SSL_kDHE}, |
239 | {0, SSL_TXT_kDHE, 0, SSL_kDHE}, | |
240 | {0, SSL_TXT_DH, 0, SSL_kDHE}, | |
0f113f3e | 241 | |
e5f969a8 RS |
242 | {0, SSL_TXT_kEECDH, 0, SSL_kECDHE}, |
243 | {0, SSL_TXT_kECDHE, 0, SSL_kECDHE}, | |
244 | {0, SSL_TXT_ECDH, 0, SSL_kECDHE}, | |
0f113f3e | 245 | |
e5f969a8 RS |
246 | {0, SSL_TXT_kPSK, 0, SSL_kPSK}, |
247 | {0, SSL_TXT_kRSAPSK, 0, SSL_kRSAPSK}, | |
248 | {0, SSL_TXT_kECDHEPSK, 0, SSL_kECDHEPSK}, | |
249 | {0, SSL_TXT_kDHEPSK, 0, SSL_kDHEPSK}, | |
250 | {0, SSL_TXT_kSRP, 0, SSL_kSRP}, | |
251 | {0, SSL_TXT_kGOST, 0, SSL_kGOST}, | |
0f113f3e MC |
252 | |
253 | /* server authentication aliases */ | |
e5f969a8 RS |
254 | {0, SSL_TXT_aRSA, 0, 0, SSL_aRSA}, |
255 | {0, SSL_TXT_aDSS, 0, 0, SSL_aDSS}, | |
256 | {0, SSL_TXT_DSS, 0, 0, SSL_aDSS}, | |
257 | {0, SSL_TXT_aNULL, 0, 0, SSL_aNULL}, | |
258 | {0, SSL_TXT_aECDSA, 0, 0, SSL_aECDSA}, | |
259 | {0, SSL_TXT_ECDSA, 0, 0, SSL_aECDSA}, | |
260 | {0, SSL_TXT_aPSK, 0, 0, SSL_aPSK}, | |
261 | {0, SSL_TXT_aGOST01, 0, 0, SSL_aGOST01}, | |
262 | {0, SSL_TXT_aGOST12, 0, 0, SSL_aGOST12}, | |
263 | {0, SSL_TXT_aGOST, 0, 0, SSL_aGOST01 | SSL_aGOST12}, | |
264 | {0, SSL_TXT_aSRP, 0, 0, SSL_aSRP}, | |
0f113f3e MC |
265 | |
266 | /* aliases combining key exchange and server authentication */ | |
e5f969a8 RS |
267 | {0, SSL_TXT_EDH, 0, SSL_kDHE, ~SSL_aNULL}, |
268 | {0, SSL_TXT_DHE, 0, SSL_kDHE, ~SSL_aNULL}, | |
269 | {0, SSL_TXT_EECDH, 0, SSL_kECDHE, ~SSL_aNULL}, | |
270 | {0, SSL_TXT_ECDHE, 0, SSL_kECDHE, ~SSL_aNULL}, | |
271 | {0, SSL_TXT_NULL, 0, 0, 0, SSL_eNULL}, | |
272 | {0, SSL_TXT_RSA, 0, SSL_kRSA, SSL_aRSA}, | |
273 | {0, SSL_TXT_ADH, 0, SSL_kDHE, SSL_aNULL}, | |
274 | {0, SSL_TXT_AECDH, 0, SSL_kECDHE, SSL_aNULL}, | |
275 | {0, SSL_TXT_PSK, 0, SSL_PSK}, | |
276 | {0, SSL_TXT_SRP, 0, SSL_kSRP}, | |
0f113f3e MC |
277 | |
278 | /* symmetric encryption aliases */ | |
e5f969a8 RS |
279 | {0, SSL_TXT_3DES, 0, 0, 0, SSL_3DES}, |
280 | {0, SSL_TXT_RC4, 0, 0, 0, SSL_RC4}, | |
281 | {0, SSL_TXT_RC2, 0, 0, 0, SSL_RC2}, | |
282 | {0, SSL_TXT_IDEA, 0, 0, 0, SSL_IDEA}, | |
283 | {0, SSL_TXT_SEED, 0, 0, 0, SSL_SEED}, | |
284 | {0, SSL_TXT_eNULL, 0, 0, 0, SSL_eNULL}, | |
285 | {0, SSL_TXT_GOST, 0, 0, 0, SSL_eGOST2814789CNT | SSL_eGOST2814789CNT12}, | |
a230b26e | 286 | {0, SSL_TXT_AES128, 0, 0, 0, |
e5f969a8 | 287 | SSL_AES128 | SSL_AES128GCM | SSL_AES128CCM | SSL_AES128CCM8}, |
a230b26e | 288 | {0, SSL_TXT_AES256, 0, 0, 0, |
e5f969a8 RS |
289 | SSL_AES256 | SSL_AES256GCM | SSL_AES256CCM | SSL_AES256CCM8}, |
290 | {0, SSL_TXT_AES, 0, 0, 0, SSL_AES}, | |
291 | {0, SSL_TXT_AES_GCM, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM}, | |
3eb2aff4 | 292 | {0, SSL_TXT_AES_CCM, 0, 0, 0, |
e5f969a8 RS |
293 | SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8}, |
294 | {0, SSL_TXT_AES_CCM_8, 0, 0, 0, SSL_AES128CCM8 | SSL_AES256CCM8}, | |
295 | {0, SSL_TXT_CAMELLIA128, 0, 0, 0, SSL_CAMELLIA128}, | |
296 | {0, SSL_TXT_CAMELLIA256, 0, 0, 0, SSL_CAMELLIA256}, | |
297 | {0, SSL_TXT_CAMELLIA, 0, 0, 0, SSL_CAMELLIA}, | |
298 | {0, SSL_TXT_CHACHA20, 0, 0, 0, SSL_CHACHA20}, | |
0f113f3e MC |
299 | |
300 | /* MAC aliases */ | |
e5f969a8 RS |
301 | {0, SSL_TXT_MD5, 0, 0, 0, 0, SSL_MD5}, |
302 | {0, SSL_TXT_SHA1, 0, 0, 0, 0, SSL_SHA1}, | |
303 | {0, SSL_TXT_SHA, 0, 0, 0, 0, SSL_SHA1}, | |
304 | {0, SSL_TXT_GOST94, 0, 0, 0, 0, SSL_GOST94}, | |
305 | {0, SSL_TXT_GOST89MAC, 0, 0, 0, 0, SSL_GOST89MAC | SSL_GOST89MAC12}, | |
306 | {0, SSL_TXT_SHA256, 0, 0, 0, 0, SSL_SHA256}, | |
307 | {0, SSL_TXT_SHA384, 0, 0, 0, 0, SSL_SHA384}, | |
308 | {0, SSL_TXT_GOST12, 0, 0, 0, 0, SSL_GOST12_256}, | |
0f113f3e MC |
309 | |
310 | /* protocol version aliases */ | |
e5f969a8 RS |
311 | {0, SSL_TXT_SSLV3, 0, 0, 0, 0, 0, SSL3_VERSION}, |
312 | {0, SSL_TXT_TLSV1, 0, 0, 0, 0, 0, TLS1_VERSION}, | |
313 | {0, "TLSv1.0", 0, 0, 0, 0, 0, TLS1_VERSION}, | |
314 | {0, SSL_TXT_TLSV1_2, 0, 0, 0, 0, 0, TLS1_2_VERSION}, | |
0f113f3e | 315 | |
0f113f3e | 316 | /* strength classes */ |
e5f969a8 RS |
317 | {0, SSL_TXT_LOW, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_LOW}, |
318 | {0, SSL_TXT_MEDIUM, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_MEDIUM}, | |
319 | {0, SSL_TXT_HIGH, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_HIGH}, | |
0f113f3e | 320 | /* FIPS 140-2 approved ciphersuite */ |
e5f969a8 | 321 | {0, SSL_TXT_FIPS, 0, 0, 0, ~SSL_eNULL, 0, 0, 0, 0, 0, SSL_FIPS}, |
0f113f3e MC |
322 | |
323 | /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */ | |
0f113f3e | 324 | {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA, 0, |
e5f969a8 | 325 | SSL_kDHE, SSL_aDSS, SSL_3DES, SSL_SHA1, 0, 0, 0, 0, SSL_HIGH | SSL_FIPS}, |
0f113f3e | 326 | {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA, 0, |
e5f969a8 | 327 | SSL_kDHE, SSL_aRSA, SSL_3DES, SSL_SHA1, 0, 0, 0, 0, SSL_HIGH | SSL_FIPS}, |
0f113f3e MC |
328 | |
329 | }; | |
330 | ||
331 | /* | |
332 | * Search for public key algorithm with given name and return its pkey_id if | |
333 | * it is available. Otherwise return 0 | |
81025661 | 334 | */ |
70531c14 DSH |
335 | #ifdef OPENSSL_NO_ENGINE |
336 | ||
81025661 | 337 | static int get_optional_pkey_id(const char *pkey_name) |
0f113f3e MC |
338 | { |
339 | const EVP_PKEY_ASN1_METHOD *ameth; | |
340 | int pkey_id = 0; | |
341 | ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1); | |
5f3d93e4 MC |
342 | if (ameth && EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, |
343 | ameth) > 0) { | |
344 | return pkey_id; | |
0f113f3e | 345 | } |
5f3d93e4 | 346 | return 0; |
0f113f3e | 347 | } |
d02b48c6 | 348 | |
70531c14 DSH |
349 | #else |
350 | ||
351 | static int get_optional_pkey_id(const char *pkey_name) | |
0f113f3e MC |
352 | { |
353 | const EVP_PKEY_ASN1_METHOD *ameth; | |
354 | ENGINE *tmpeng = NULL; | |
355 | int pkey_id = 0; | |
356 | ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1); | |
357 | if (ameth) { | |
5f3d93e4 MC |
358 | if (EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, |
359 | ameth) <= 0) | |
360 | pkey_id = 0; | |
0f113f3e | 361 | } |
7c96dbcd | 362 | ENGINE_finish(tmpeng); |
0f113f3e MC |
363 | return pkey_id; |
364 | } | |
70531c14 DSH |
365 | |
366 | #endif | |
367 | ||
633d49c7 | 368 | /* masks of disabled algorithms */ |
90d9e49a DSH |
369 | static uint32_t disabled_enc_mask; |
370 | static uint32_t disabled_mac_mask; | |
371 | static uint32_t disabled_mkey_mask; | |
372 | static uint32_t disabled_auth_mask; | |
633d49c7 | 373 | |
380a522f | 374 | int ssl_load_ciphers(void) |
0f113f3e | 375 | { |
98c9ce2f DSH |
376 | size_t i; |
377 | const ssl_cipher_table *t; | |
748f2546 | 378 | |
633d49c7 | 379 | disabled_enc_mask = 0; |
748f2546 | 380 | ssl_sort_cipher_list(); |
98c9ce2f | 381 | for (i = 0, t = ssl_cipher_table_cipher; i < SSL_ENC_NUM_IDX; i++, t++) { |
633d49c7 | 382 | if (t->nid == NID_undef) { |
98c9ce2f | 383 | ssl_cipher_methods[i] = NULL; |
633d49c7 DSH |
384 | } else { |
385 | const EVP_CIPHER *cipher = EVP_get_cipherbynid(t->nid); | |
386 | ssl_cipher_methods[i] = cipher; | |
387 | if (cipher == NULL) | |
388 | disabled_enc_mask |= t->mask; | |
389 | } | |
0f113f3e | 390 | } |
633d49c7 | 391 | disabled_mac_mask = 0; |
98c9ce2f | 392 | for (i = 0, t = ssl_cipher_table_mac; i < SSL_MD_NUM_IDX; i++, t++) { |
633d49c7 DSH |
393 | const EVP_MD *md = EVP_get_digestbynid(t->nid); |
394 | ssl_digest_methods[i] = md; | |
395 | if (md == NULL) { | |
396 | disabled_mac_mask |= t->mask; | |
397 | } else { | |
8c1a5343 | 398 | int tmpsize = EVP_MD_size(md); |
380a522f MC |
399 | if (!ossl_assert(tmpsize >= 0)) |
400 | return 0; | |
8c1a5343 | 401 | ssl_mac_secret_size[i] = tmpsize; |
98c9ce2f DSH |
402 | } |
403 | } | |
404 | /* Make sure we can access MD5 and SHA1 */ | |
380a522f MC |
405 | if (!ossl_assert(ssl_digest_methods[SSL_MD_MD5_IDX] != NULL)) |
406 | return 0; | |
407 | if (!ossl_assert(ssl_digest_methods[SSL_MD_SHA1_IDX] != NULL)) | |
408 | return 0; | |
633d49c7 DSH |
409 | |
410 | disabled_mkey_mask = 0; | |
411 | disabled_auth_mask = 0; | |
412 | ||
413 | #ifdef OPENSSL_NO_RSA | |
332a251f | 414 | disabled_mkey_mask |= SSL_kRSA | SSL_kRSAPSK; |
633d49c7 DSH |
415 | disabled_auth_mask |= SSL_aRSA; |
416 | #endif | |
417 | #ifdef OPENSSL_NO_DSA | |
418 | disabled_auth_mask |= SSL_aDSS; | |
419 | #endif | |
420 | #ifdef OPENSSL_NO_DH | |
bc71f910 | 421 | disabled_mkey_mask |= SSL_kDHE | SSL_kDHEPSK; |
633d49c7 DSH |
422 | #endif |
423 | #ifdef OPENSSL_NO_EC | |
ce0c1f2b DSH |
424 | disabled_mkey_mask |= SSL_kECDHEPSK; |
425 | disabled_auth_mask |= SSL_aECDSA; | |
633d49c7 DSH |
426 | #endif |
427 | #ifdef OPENSSL_NO_PSK | |
332a251f | 428 | disabled_mkey_mask |= SSL_PSK; |
633d49c7 DSH |
429 | disabled_auth_mask |= SSL_aPSK; |
430 | #endif | |
431 | #ifdef OPENSSL_NO_SRP | |
432 | disabled_mkey_mask |= SSL_kSRP; | |
433 | #endif | |
434 | ||
435 | /* | |
436 | * Check for presence of GOST 34.10 algorithms, and if they are not | |
437 | * present, disable appropriate auth and key exchange | |
438 | */ | |
e1fa652d DSH |
439 | ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); |
440 | if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) { | |
441 | ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32; | |
633d49c7 DSH |
442 | } else { |
443 | disabled_mac_mask |= SSL_GOST89MAC; | |
e1fa652d | 444 | } |
633d49c7 | 445 | |
a230b26e EK |
446 | ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX] = |
447 | get_optional_pkey_id("gost-mac-12"); | |
e44380a9 DB |
448 | if (ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX]) { |
449 | ssl_mac_secret_size[SSL_MD_GOST89MAC12_IDX] = 32; | |
450 | } else { | |
451 | disabled_mac_mask |= SSL_GOST89MAC12; | |
452 | } | |
453 | ||
633d49c7 | 454 | if (!get_optional_pkey_id("gost2001")) |
e44380a9 DB |
455 | disabled_auth_mask |= SSL_aGOST01 | SSL_aGOST12; |
456 | if (!get_optional_pkey_id("gost2012_256")) | |
457 | disabled_auth_mask |= SSL_aGOST12; | |
458 | if (!get_optional_pkey_id("gost2012_512")) | |
459 | disabled_auth_mask |= SSL_aGOST12; | |
633d49c7 DSH |
460 | /* |
461 | * Disable GOST key exchange if no GOST signature algs are available * | |
462 | */ | |
a230b26e EK |
463 | if ((disabled_auth_mask & (SSL_aGOST01 | SSL_aGOST12)) == |
464 | (SSL_aGOST01 | SSL_aGOST12)) | |
633d49c7 | 465 | disabled_mkey_mask |= SSL_kGOST; |
380a522f MC |
466 | |
467 | return 1; | |
0f113f3e MC |
468 | } |
469 | ||
09b6c2ef DSH |
470 | #ifndef OPENSSL_NO_COMP |
471 | ||
0f113f3e MC |
472 | static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b) |
473 | { | |
474 | return ((*a)->id - (*b)->id); | |
475 | } | |
7ba666fa | 476 | |
c2e4e5d2 | 477 | DEFINE_RUN_ONCE_STATIC(do_load_builtin_compressions) |
0f113f3e | 478 | { |
16203f7b AG |
479 | SSL_COMP *comp = NULL; |
480 | COMP_METHOD *method = COMP_zlib(); | |
481 | ||
482 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE); | |
483 | ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp); | |
484 | ||
485 | if (COMP_get_type(method) != NID_undef && ssl_comp_methods != NULL) { | |
486 | comp = OPENSSL_malloc(sizeof(*comp)); | |
487 | if (comp != NULL) { | |
488 | comp->method = method; | |
489 | comp->id = SSL_COMP_ZLIB_IDX; | |
490 | comp->name = COMP_get_name(method); | |
491 | sk_SSL_COMP_push(ssl_comp_methods, comp); | |
492 | sk_SSL_COMP_sort(ssl_comp_methods); | |
0f113f3e MC |
493 | } |
494 | } | |
16203f7b | 495 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE); |
c2e4e5d2 | 496 | return 1; |
16203f7b | 497 | } |
0f113f3e | 498 | |
912c258f | 499 | static int load_builtin_compressions(void) |
16203f7b | 500 | { |
912c258f | 501 | return RUN_ONCE(&ssl_load_builtin_comp_once, do_load_builtin_compressions); |
0f113f3e | 502 | } |
09b6c2ef | 503 | #endif |
7ba666fa | 504 | |
0821bcd4 | 505 | int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, |
0f113f3e | 506 | const EVP_MD **md, int *mac_pkey_type, |
8c1a5343 | 507 | size_t *mac_secret_size, SSL_COMP **comp, int use_etm) |
0f113f3e MC |
508 | { |
509 | int i; | |
510 | const SSL_CIPHER *c; | |
511 | ||
512 | c = s->cipher; | |
513 | if (c == NULL) | |
514 | return (0); | |
515 | if (comp != NULL) { | |
516 | SSL_COMP ctmp; | |
09b6c2ef | 517 | #ifndef OPENSSL_NO_COMP |
912c258f RL |
518 | if (!load_builtin_compressions()) { |
519 | /* | |
520 | * Currently don't care, since a failure only means that | |
521 | * ssl_comp_methods is NULL, which is perfectly OK | |
522 | */ | |
523 | } | |
09b6c2ef | 524 | #endif |
0f113f3e MC |
525 | *comp = NULL; |
526 | ctmp.id = s->compress_meth; | |
527 | if (ssl_comp_methods != NULL) { | |
528 | i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp); | |
529 | if (i >= 0) | |
530 | *comp = sk_SSL_COMP_value(ssl_comp_methods, i); | |
531 | else | |
532 | *comp = NULL; | |
533 | } | |
69f68237 | 534 | /* If were only interested in comp then return success */ |
61986d32 | 535 | if ((enc == NULL) && (md == NULL)) |
69f68237 | 536 | return 1; |
0f113f3e MC |
537 | } |
538 | ||
539 | if ((enc == NULL) || (md == NULL)) | |
69f68237 | 540 | return 0; |
0f113f3e | 541 | |
98c9ce2f | 542 | i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc); |
0f113f3e | 543 | |
98c9ce2f | 544 | if (i == -1) |
0f113f3e MC |
545 | *enc = NULL; |
546 | else { | |
547 | if (i == SSL_ENC_NULL_IDX) | |
548 | *enc = EVP_enc_null(); | |
549 | else | |
550 | *enc = ssl_cipher_methods[i]; | |
551 | } | |
552 | ||
98c9ce2f DSH |
553 | i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac); |
554 | if (i == -1) { | |
0f113f3e MC |
555 | *md = NULL; |
556 | if (mac_pkey_type != NULL) | |
557 | *mac_pkey_type = NID_undef; | |
558 | if (mac_secret_size != NULL) | |
559 | *mac_secret_size = 0; | |
560 | if (c->algorithm_mac == SSL_AEAD) | |
561 | mac_pkey_type = NULL; | |
562 | } else { | |
563 | *md = ssl_digest_methods[i]; | |
564 | if (mac_pkey_type != NULL) | |
565 | *mac_pkey_type = ssl_mac_pkey_id[i]; | |
566 | if (mac_secret_size != NULL) | |
567 | *mac_secret_size = ssl_mac_secret_size[i]; | |
568 | } | |
569 | ||
570 | if ((*enc != NULL) && | |
571 | (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER)) | |
572 | && (!mac_pkey_type || *mac_pkey_type != NID_undef)) { | |
573 | const EVP_CIPHER *evp; | |
574 | ||
575 | if (use_etm) | |
576 | return 1; | |
577 | ||
578 | if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR || | |
579 | s->ssl_version < TLS1_VERSION) | |
580 | return 1; | |
581 | ||
0f113f3e MC |
582 | if (c->algorithm_enc == SSL_RC4 && |
583 | c->algorithm_mac == SSL_MD5 && | |
584 | (evp = EVP_get_cipherbyname("RC4-HMAC-MD5"))) | |
585 | *enc = evp, *md = NULL; | |
586 | else if (c->algorithm_enc == SSL_AES128 && | |
587 | c->algorithm_mac == SSL_SHA1 && | |
588 | (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1"))) | |
589 | *enc = evp, *md = NULL; | |
590 | else if (c->algorithm_enc == SSL_AES256 && | |
591 | c->algorithm_mac == SSL_SHA1 && | |
592 | (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1"))) | |
593 | *enc = evp, *md = NULL; | |
594 | else if (c->algorithm_enc == SSL_AES128 && | |
595 | c->algorithm_mac == SSL_SHA256 && | |
596 | (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA256"))) | |
597 | *enc = evp, *md = NULL; | |
598 | else if (c->algorithm_enc == SSL_AES256 && | |
599 | c->algorithm_mac == SSL_SHA256 && | |
600 | (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA256"))) | |
601 | *enc = evp, *md = NULL; | |
602 | return (1); | |
603 | } else | |
604 | return (0); | |
605 | } | |
606 | ||
152fbc28 | 607 | const EVP_MD *ssl_md(int idx) |
81025661 | 608 | { |
28ba2541 DSH |
609 | idx &= SSL_HANDSHAKE_MAC_MASK; |
610 | if (idx < 0 || idx >= SSL_MD_NUM_IDX) | |
611 | return NULL; | |
612 | return ssl_digest_methods[idx]; | |
613 | } | |
614 | ||
615 | const EVP_MD *ssl_handshake_md(SSL *s) | |
616 | { | |
152fbc28 | 617 | return ssl_md(ssl_get_algorithm2(s)); |
28ba2541 DSH |
618 | } |
619 | ||
620 | const EVP_MD *ssl_prf_md(SSL *s) | |
621 | { | |
152fbc28 | 622 | return ssl_md(ssl_get_algorithm2(s) >> TLS1_PRF_DGST_SHIFT); |
81025661 DSH |
623 | } |
624 | ||
58964a49 | 625 | #define ITEM_SEP(a) \ |
0f113f3e | 626 | (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) |
58964a49 | 627 | |
6b691a5c | 628 | static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
0f113f3e MC |
629 | CIPHER_ORDER **tail) |
630 | { | |
631 | if (curr == *tail) | |
632 | return; | |
633 | if (curr == *head) | |
634 | *head = curr->next; | |
635 | if (curr->prev != NULL) | |
636 | curr->prev->next = curr->next; | |
637 | if (curr->next != NULL) | |
638 | curr->next->prev = curr->prev; | |
639 | (*tail)->next = curr; | |
640 | curr->prev = *tail; | |
641 | curr->next = NULL; | |
642 | *tail = curr; | |
643 | } | |
58964a49 | 644 | |
fd5bc65c | 645 | static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
0f113f3e MC |
646 | CIPHER_ORDER **tail) |
647 | { | |
648 | if (curr == *head) | |
649 | return; | |
650 | if (curr == *tail) | |
651 | *tail = curr->prev; | |
652 | if (curr->next != NULL) | |
653 | curr->next->prev = curr->prev; | |
654 | if (curr->prev != NULL) | |
655 | curr->prev->next = curr->next; | |
656 | (*head)->prev = curr; | |
657 | curr->next = *head; | |
658 | curr->prev = NULL; | |
659 | *head = curr; | |
660 | } | |
661 | ||
018e57c7 | 662 | static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, |
0f113f3e | 663 | int num_of_ciphers, |
90d9e49a DSH |
664 | uint32_t disabled_mkey, |
665 | uint32_t disabled_auth, | |
666 | uint32_t disabled_enc, | |
667 | uint32_t disabled_mac, | |
0f113f3e MC |
668 | CIPHER_ORDER *co_list, |
669 | CIPHER_ORDER **head_p, | |
670 | CIPHER_ORDER **tail_p) | |
671 | { | |
672 | int i, co_list_num; | |
673 | const SSL_CIPHER *c; | |
674 | ||
675 | /* | |
676 | * We have num_of_ciphers descriptions compiled in, depending on the | |
677 | * method selected (SSLv3, TLSv1 etc). | |
678 | * These will later be sorted in a linked list with at most num | |
679 | * entries. | |
680 | */ | |
681 | ||
682 | /* Get the initial list of ciphers */ | |
683 | co_list_num = 0; /* actual count of ciphers */ | |
684 | for (i = 0; i < num_of_ciphers; i++) { | |
685 | c = ssl_method->get_cipher(i); | |
686 | /* drop those that use any of that is not available */ | |
ca3895f0 KR |
687 | if (c == NULL || !c->valid) |
688 | continue; | |
ca3895f0 KR |
689 | if ((c->algorithm_mkey & disabled_mkey) || |
690 | (c->algorithm_auth & disabled_auth) || | |
691 | (c->algorithm_enc & disabled_enc) || | |
692 | (c->algorithm_mac & disabled_mac)) | |
693 | continue; | |
694 | if (((ssl_method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) == 0) && | |
695 | c->min_tls == 0) | |
696 | continue; | |
697 | if (((ssl_method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) != 0) && | |
698 | c->min_dtls == 0) | |
699 | continue; | |
700 | ||
701 | co_list[co_list_num].cipher = c; | |
702 | co_list[co_list_num].next = NULL; | |
703 | co_list[co_list_num].prev = NULL; | |
704 | co_list[co_list_num].active = 0; | |
705 | co_list_num++; | |
0f113f3e MC |
706 | } |
707 | ||
708 | /* | |
709 | * Prepare linked list from list entries | |
710 | */ | |
711 | if (co_list_num > 0) { | |
712 | co_list[0].prev = NULL; | |
713 | ||
714 | if (co_list_num > 1) { | |
715 | co_list[0].next = &co_list[1]; | |
716 | ||
717 | for (i = 1; i < co_list_num - 1; i++) { | |
718 | co_list[i].prev = &co_list[i - 1]; | |
719 | co_list[i].next = &co_list[i + 1]; | |
720 | } | |
721 | ||
722 | co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; | |
723 | } | |
724 | ||
725 | co_list[co_list_num - 1].next = NULL; | |
726 | ||
727 | *head_p = &co_list[0]; | |
728 | *tail_p = &co_list[co_list_num - 1]; | |
729 | } | |
730 | } | |
d02b48c6 | 731 | |
babb3798 | 732 | static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, |
0f113f3e | 733 | int num_of_group_aliases, |
90d9e49a DSH |
734 | uint32_t disabled_mkey, |
735 | uint32_t disabled_auth, | |
736 | uint32_t disabled_enc, | |
737 | uint32_t disabled_mac, | |
0f113f3e MC |
738 | CIPHER_ORDER *head) |
739 | { | |
740 | CIPHER_ORDER *ciph_curr; | |
741 | const SSL_CIPHER **ca_curr; | |
742 | int i; | |
90d9e49a DSH |
743 | uint32_t mask_mkey = ~disabled_mkey; |
744 | uint32_t mask_auth = ~disabled_auth; | |
745 | uint32_t mask_enc = ~disabled_enc; | |
746 | uint32_t mask_mac = ~disabled_mac; | |
0f113f3e MC |
747 | |
748 | /* | |
749 | * First, add the real ciphers as already collected | |
750 | */ | |
751 | ciph_curr = head; | |
752 | ca_curr = ca_list; | |
753 | while (ciph_curr != NULL) { | |
754 | *ca_curr = ciph_curr->cipher; | |
755 | ca_curr++; | |
756 | ciph_curr = ciph_curr->next; | |
757 | } | |
758 | ||
759 | /* | |
760 | * Now we add the available ones from the cipher_aliases[] table. | |
761 | * They represent either one or more algorithms, some of which | |
762 | * in any affected category must be supported (set in enabled_mask), | |
763 | * or represent a cipher strength value (will be added in any case because algorithms=0). | |
764 | */ | |
765 | for (i = 0; i < num_of_group_aliases; i++) { | |
90d9e49a DSH |
766 | uint32_t algorithm_mkey = cipher_aliases[i].algorithm_mkey; |
767 | uint32_t algorithm_auth = cipher_aliases[i].algorithm_auth; | |
768 | uint32_t algorithm_enc = cipher_aliases[i].algorithm_enc; | |
769 | uint32_t algorithm_mac = cipher_aliases[i].algorithm_mac; | |
0f113f3e MC |
770 | |
771 | if (algorithm_mkey) | |
772 | if ((algorithm_mkey & mask_mkey) == 0) | |
773 | continue; | |
774 | ||
775 | if (algorithm_auth) | |
776 | if ((algorithm_auth & mask_auth) == 0) | |
777 | continue; | |
778 | ||
779 | if (algorithm_enc) | |
780 | if ((algorithm_enc & mask_enc) == 0) | |
781 | continue; | |
782 | ||
783 | if (algorithm_mac) | |
784 | if ((algorithm_mac & mask_mac) == 0) | |
785 | continue; | |
786 | ||
0f113f3e MC |
787 | *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); |
788 | ca_curr++; | |
789 | } | |
790 | ||
791 | *ca_curr = NULL; /* end of list */ | |
792 | } | |
d02b48c6 | 793 | |
90d9e49a DSH |
794 | static void ssl_cipher_apply_rule(uint32_t cipher_id, uint32_t alg_mkey, |
795 | uint32_t alg_auth, uint32_t alg_enc, | |
3eb2aff4 | 796 | uint32_t alg_mac, int min_tls, |
90d9e49a DSH |
797 | uint32_t algo_strength, int rule, |
798 | int32_t strength_bits, CIPHER_ORDER **head_p, | |
0f113f3e MC |
799 | CIPHER_ORDER **tail_p) |
800 | { | |
801 | CIPHER_ORDER *head, *tail, *curr, *next, *last; | |
802 | const SSL_CIPHER *cp; | |
803 | int reverse = 0; | |
018e57c7 DSH |
804 | |
805 | #ifdef CIPHER_DEBUG | |
0f113f3e | 806 | fprintf(stderr, |
d1776fde | 807 | "Applying rule %d with %08x/%08x/%08x/%08x/%08x %08x (%d)\n", |
3eb2aff4 | 808 | rule, alg_mkey, alg_auth, alg_enc, alg_mac, min_tls, |
0f113f3e | 809 | algo_strength, strength_bits); |
018e57c7 | 810 | #endif |
d02b48c6 | 811 | |
a556f342 | 812 | if (rule == CIPHER_DEL || rule == CIPHER_BUMP) |
a230b26e EK |
813 | reverse = 1; /* needed to maintain sorting between currently |
814 | * deleted ciphers */ | |
0f113f3e MC |
815 | |
816 | head = *head_p; | |
817 | tail = *tail_p; | |
818 | ||
819 | if (reverse) { | |
820 | next = tail; | |
821 | last = head; | |
822 | } else { | |
823 | next = head; | |
824 | last = tail; | |
825 | } | |
826 | ||
827 | curr = NULL; | |
828 | for (;;) { | |
829 | if (curr == last) | |
830 | break; | |
831 | ||
832 | curr = next; | |
833 | ||
834 | if (curr == NULL) | |
835 | break; | |
836 | ||
837 | next = reverse ? curr->prev : curr->next; | |
838 | ||
839 | cp = curr->cipher; | |
840 | ||
841 | /* | |
842 | * Selection criteria is either the value of strength_bits | |
843 | * or the algorithms used. | |
844 | */ | |
845 | if (strength_bits >= 0) { | |
846 | if (strength_bits != cp->strength_bits) | |
847 | continue; | |
848 | } else { | |
018e57c7 | 849 | #ifdef CIPHER_DEBUG |
0f113f3e | 850 | fprintf(stderr, |
d1776fde | 851 | "\nName: %s:\nAlgo = %08x/%08x/%08x/%08x/%08x Algo_strength = %08x\n", |
0f113f3e | 852 | cp->name, cp->algorithm_mkey, cp->algorithm_auth, |
a4a18b2f | 853 | cp->algorithm_enc, cp->algorithm_mac, cp->min_tls, |
0f113f3e | 854 | cp->algo_strength); |
323fa645 | 855 | #endif |
0ced42e0 MC |
856 | if (cipher_id != 0 && (cipher_id != cp->id)) |
857 | continue; | |
0f113f3e MC |
858 | if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) |
859 | continue; | |
860 | if (alg_auth && !(alg_auth & cp->algorithm_auth)) | |
861 | continue; | |
862 | if (alg_enc && !(alg_enc & cp->algorithm_enc)) | |
863 | continue; | |
864 | if (alg_mac && !(alg_mac & cp->algorithm_mac)) | |
865 | continue; | |
3eb2aff4 | 866 | if (min_tls && (min_tls != cp->min_tls)) |
0f113f3e | 867 | continue; |
88a9614b KR |
868 | if ((algo_strength & SSL_STRONG_MASK) |
869 | && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) | |
0f113f3e | 870 | continue; |
c84f7f4a MC |
871 | if ((algo_strength & SSL_DEFAULT_MASK) |
872 | && !(algo_strength & SSL_DEFAULT_MASK & cp->algo_strength)) | |
873 | continue; | |
0f113f3e | 874 | } |
018e57c7 DSH |
875 | |
876 | #ifdef CIPHER_DEBUG | |
0f113f3e | 877 | fprintf(stderr, "Action = %d\n", rule); |
018e57c7 DSH |
878 | #endif |
879 | ||
0f113f3e MC |
880 | /* add the cipher if it has not been added yet. */ |
881 | if (rule == CIPHER_ADD) { | |
882 | /* reverse == 0 */ | |
883 | if (!curr->active) { | |
884 | ll_append_tail(&head, curr, &tail); | |
885 | curr->active = 1; | |
886 | } | |
887 | } | |
888 | /* Move the added cipher to this location */ | |
889 | else if (rule == CIPHER_ORD) { | |
890 | /* reverse == 0 */ | |
891 | if (curr->active) { | |
892 | ll_append_tail(&head, curr, &tail); | |
893 | } | |
894 | } else if (rule == CIPHER_DEL) { | |
895 | /* reverse == 1 */ | |
896 | if (curr->active) { | |
897 | /* | |
898 | * most recently deleted ciphersuites get best positions for | |
899 | * any future CIPHER_ADD (note that the CIPHER_DEL loop works | |
900 | * in reverse to maintain the order) | |
901 | */ | |
902 | ll_append_head(&head, curr, &tail); | |
903 | curr->active = 0; | |
904 | } | |
a556f342 EK |
905 | } else if (rule == CIPHER_BUMP) { |
906 | if (curr->active) | |
907 | ll_append_head(&head, curr, &tail); | |
0f113f3e MC |
908 | } else if (rule == CIPHER_KILL) { |
909 | /* reverse == 0 */ | |
910 | if (head == curr) | |
911 | head = curr->next; | |
912 | else | |
913 | curr->prev->next = curr->next; | |
914 | if (tail == curr) | |
915 | tail = curr->prev; | |
916 | curr->active = 0; | |
917 | if (curr->next != NULL) | |
918 | curr->next->prev = curr->prev; | |
919 | if (curr->prev != NULL) | |
920 | curr->prev->next = curr->next; | |
921 | curr->next = NULL; | |
922 | curr->prev = NULL; | |
923 | } | |
924 | } | |
925 | ||
926 | *head_p = head; | |
927 | *tail_p = tail; | |
928 | } | |
018e57c7 | 929 | |
a717831d | 930 | static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, |
0f113f3e MC |
931 | CIPHER_ORDER **tail_p) |
932 | { | |
90d9e49a DSH |
933 | int32_t max_strength_bits; |
934 | int i, *number_uses; | |
0f113f3e MC |
935 | CIPHER_ORDER *curr; |
936 | ||
937 | /* | |
938 | * This routine sorts the ciphers with descending strength. The sorting | |
939 | * must keep the pre-sorted sequence, so we apply the normal sorting | |
940 | * routine as '+' movement to the end of the list. | |
941 | */ | |
942 | max_strength_bits = 0; | |
943 | curr = *head_p; | |
944 | while (curr != NULL) { | |
945 | if (curr->active && (curr->cipher->strength_bits > max_strength_bits)) | |
946 | max_strength_bits = curr->cipher->strength_bits; | |
947 | curr = curr->next; | |
948 | } | |
949 | ||
b51bce94 | 950 | number_uses = OPENSSL_zalloc(sizeof(int) * (max_strength_bits + 1)); |
a71edf3b | 951 | if (number_uses == NULL) { |
0f113f3e MC |
952 | SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE); |
953 | return (0); | |
954 | } | |
0f113f3e MC |
955 | |
956 | /* | |
957 | * Now find the strength_bits values actually used | |
958 | */ | |
959 | curr = *head_p; | |
960 | while (curr != NULL) { | |
961 | if (curr->active) | |
962 | number_uses[curr->cipher->strength_bits]++; | |
963 | curr = curr->next; | |
964 | } | |
965 | /* | |
966 | * Go through the list of used strength_bits values in descending | |
967 | * order. | |
968 | */ | |
969 | for (i = max_strength_bits; i >= 0; i--) | |
970 | if (number_uses[i] > 0) | |
971 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, | |
972 | tail_p); | |
973 | ||
974 | OPENSSL_free(number_uses); | |
975 | return (1); | |
976 | } | |
018e57c7 DSH |
977 | |
978 | static int ssl_cipher_process_rulestr(const char *rule_str, | |
0f113f3e MC |
979 | CIPHER_ORDER **head_p, |
980 | CIPHER_ORDER **tail_p, | |
981 | const SSL_CIPHER **ca_list, CERT *c) | |
982 | { | |
3eb2aff4 KR |
983 | uint32_t alg_mkey, alg_auth, alg_enc, alg_mac, algo_strength; |
984 | int min_tls; | |
0f113f3e MC |
985 | const char *l, *buf; |
986 | int j, multi, found, rule, retval, ok, buflen; | |
90d9e49a | 987 | uint32_t cipher_id = 0; |
0f113f3e MC |
988 | char ch; |
989 | ||
990 | retval = 1; | |
991 | l = rule_str; | |
992 | for (;;) { | |
993 | ch = *l; | |
994 | ||
995 | if (ch == '\0') | |
996 | break; /* done */ | |
997 | if (ch == '-') { | |
998 | rule = CIPHER_DEL; | |
999 | l++; | |
1000 | } else if (ch == '+') { | |
1001 | rule = CIPHER_ORD; | |
1002 | l++; | |
1003 | } else if (ch == '!') { | |
1004 | rule = CIPHER_KILL; | |
1005 | l++; | |
1006 | } else if (ch == '@') { | |
1007 | rule = CIPHER_SPECIAL; | |
1008 | l++; | |
1009 | } else { | |
1010 | rule = CIPHER_ADD; | |
1011 | } | |
1012 | ||
1013 | if (ITEM_SEP(ch)) { | |
1014 | l++; | |
1015 | continue; | |
1016 | } | |
1017 | ||
1018 | alg_mkey = 0; | |
1019 | alg_auth = 0; | |
1020 | alg_enc = 0; | |
1021 | alg_mac = 0; | |
3eb2aff4 | 1022 | min_tls = 0; |
0f113f3e MC |
1023 | algo_strength = 0; |
1024 | ||
1025 | for (;;) { | |
1026 | ch = *l; | |
1027 | buf = l; | |
1028 | buflen = 0; | |
ca570cfd | 1029 | #ifndef CHARSET_EBCDIC |
0f113f3e MC |
1030 | while (((ch >= 'A') && (ch <= 'Z')) || |
1031 | ((ch >= '0') && (ch <= '9')) || | |
1032 | ((ch >= 'a') && (ch <= 'z')) || | |
1033 | (ch == '-') || (ch == '.') || (ch == '=')) | |
ca570cfd | 1034 | #else |
0f113f3e | 1035 | while (isalnum(ch) || (ch == '-') || (ch == '.') || (ch == '=')) |
ca570cfd | 1036 | #endif |
0f113f3e MC |
1037 | { |
1038 | ch = *(++l); | |
1039 | buflen++; | |
1040 | } | |
1041 | ||
1042 | if (buflen == 0) { | |
1043 | /* | |
1044 | * We hit something we cannot deal with, | |
1045 | * it is no command or separator nor | |
1046 | * alphanumeric, so we call this an error. | |
1047 | */ | |
a230b26e | 1048 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, SSL_R_INVALID_COMMAND); |
0f113f3e MC |
1049 | retval = found = 0; |
1050 | l++; | |
1051 | break; | |
1052 | } | |
1053 | ||
1054 | if (rule == CIPHER_SPECIAL) { | |
1055 | found = 0; /* unused -- avoid compiler warning */ | |
1056 | break; /* special treatment */ | |
1057 | } | |
1058 | ||
1059 | /* check for multi-part specification */ | |
1060 | if (ch == '+') { | |
1061 | multi = 1; | |
1062 | l++; | |
1063 | } else | |
1064 | multi = 0; | |
1065 | ||
1066 | /* | |
1067 | * Now search for the cipher alias in the ca_list. Be careful | |
1068 | * with the strncmp, because the "buflen" limitation | |
1069 | * will make the rule "ADH:SOME" and the cipher | |
1070 | * "ADH-MY-CIPHER" look like a match for buflen=3. | |
1071 | * So additionally check whether the cipher name found | |
1072 | * has the correct length. We can save a strlen() call: | |
1073 | * just checking for the '\0' at the right place is | |
1074 | * sufficient, we have to strncmp() anyway. (We cannot | |
1075 | * use strcmp(), because buf is not '\0' terminated.) | |
1076 | */ | |
1077 | j = found = 0; | |
1078 | cipher_id = 0; | |
1079 | while (ca_list[j]) { | |
86885c28 RS |
1080 | if (strncmp(buf, ca_list[j]->name, buflen) == 0 |
1081 | && (ca_list[j]->name[buflen] == '\0')) { | |
0f113f3e MC |
1082 | found = 1; |
1083 | break; | |
1084 | } else | |
1085 | j++; | |
1086 | } | |
1087 | ||
1088 | if (!found) | |
1089 | break; /* ignore this entry */ | |
1090 | ||
1091 | if (ca_list[j]->algorithm_mkey) { | |
1092 | if (alg_mkey) { | |
1093 | alg_mkey &= ca_list[j]->algorithm_mkey; | |
1094 | if (!alg_mkey) { | |
1095 | found = 0; | |
1096 | break; | |
1097 | } | |
1098 | } else | |
1099 | alg_mkey = ca_list[j]->algorithm_mkey; | |
1100 | } | |
1101 | ||
1102 | if (ca_list[j]->algorithm_auth) { | |
1103 | if (alg_auth) { | |
1104 | alg_auth &= ca_list[j]->algorithm_auth; | |
1105 | if (!alg_auth) { | |
1106 | found = 0; | |
1107 | break; | |
1108 | } | |
1109 | } else | |
1110 | alg_auth = ca_list[j]->algorithm_auth; | |
1111 | } | |
1112 | ||
1113 | if (ca_list[j]->algorithm_enc) { | |
1114 | if (alg_enc) { | |
1115 | alg_enc &= ca_list[j]->algorithm_enc; | |
1116 | if (!alg_enc) { | |
1117 | found = 0; | |
1118 | break; | |
1119 | } | |
1120 | } else | |
1121 | alg_enc = ca_list[j]->algorithm_enc; | |
1122 | } | |
1123 | ||
1124 | if (ca_list[j]->algorithm_mac) { | |
1125 | if (alg_mac) { | |
1126 | alg_mac &= ca_list[j]->algorithm_mac; | |
1127 | if (!alg_mac) { | |
1128 | found = 0; | |
1129 | break; | |
1130 | } | |
1131 | } else | |
1132 | alg_mac = ca_list[j]->algorithm_mac; | |
1133 | } | |
1134 | ||
88a9614b KR |
1135 | if (ca_list[j]->algo_strength & SSL_STRONG_MASK) { |
1136 | if (algo_strength & SSL_STRONG_MASK) { | |
1137 | algo_strength &= | |
1138 | (ca_list[j]->algo_strength & SSL_STRONG_MASK) | | |
1139 | ~SSL_STRONG_MASK; | |
1140 | if (!(algo_strength & SSL_STRONG_MASK)) { | |
0f113f3e MC |
1141 | found = 0; |
1142 | break; | |
1143 | } | |
1144 | } else | |
88a9614b | 1145 | algo_strength = ca_list[j]->algo_strength & SSL_STRONG_MASK; |
0f113f3e MC |
1146 | } |
1147 | ||
c84f7f4a MC |
1148 | if (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) { |
1149 | if (algo_strength & SSL_DEFAULT_MASK) { | |
1150 | algo_strength &= | |
1151 | (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) | | |
1152 | ~SSL_DEFAULT_MASK; | |
1153 | if (!(algo_strength & SSL_DEFAULT_MASK)) { | |
1154 | found = 0; | |
1155 | break; | |
1156 | } | |
1157 | } else | |
1158 | algo_strength |= | |
1159 | ca_list[j]->algo_strength & SSL_DEFAULT_MASK; | |
1160 | } | |
1161 | ||
0f113f3e MC |
1162 | if (ca_list[j]->valid) { |
1163 | /* | |
1164 | * explicit ciphersuite found; its protocol version does not | |
1165 | * become part of the search pattern! | |
1166 | */ | |
1167 | ||
1168 | cipher_id = ca_list[j]->id; | |
1169 | } else { | |
1170 | /* | |
1171 | * not an explicit ciphersuite; only in this case, the | |
1172 | * protocol version is considered part of the search pattern | |
1173 | */ | |
1174 | ||
3eb2aff4 KR |
1175 | if (ca_list[j]->min_tls) { |
1176 | if (min_tls != 0 && min_tls != ca_list[j]->min_tls) { | |
1177 | found = 0; | |
1178 | break; | |
1179 | } else { | |
1180 | min_tls = ca_list[j]->min_tls; | |
1181 | } | |
0f113f3e MC |
1182 | } |
1183 | } | |
1184 | ||
1185 | if (!multi) | |
1186 | break; | |
1187 | } | |
1188 | ||
1189 | /* | |
1190 | * Ok, we have the rule, now apply it | |
1191 | */ | |
1192 | if (rule == CIPHER_SPECIAL) { /* special command */ | |
1193 | ok = 0; | |
86885c28 | 1194 | if ((buflen == 8) && strncmp(buf, "STRENGTH", 8) == 0) |
0f113f3e | 1195 | ok = ssl_cipher_strength_sort(head_p, tail_p); |
86885c28 | 1196 | else if (buflen == 10 && strncmp(buf, "SECLEVEL=", 9) == 0) { |
0f113f3e MC |
1197 | int level = buf[9] - '0'; |
1198 | if (level < 0 || level > 5) { | |
1199 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, | |
1200 | SSL_R_INVALID_COMMAND); | |
1201 | } else { | |
1202 | c->sec_level = level; | |
1203 | ok = 1; | |
1204 | } | |
1205 | } else | |
a230b26e | 1206 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, SSL_R_INVALID_COMMAND); |
0f113f3e MC |
1207 | if (ok == 0) |
1208 | retval = 0; | |
1209 | /* | |
1210 | * We do not support any "multi" options | |
1211 | * together with "@", so throw away the | |
1212 | * rest of the command, if any left, until | |
1213 | * end or ':' is found. | |
1214 | */ | |
1215 | while ((*l != '\0') && !ITEM_SEP(*l)) | |
1216 | l++; | |
1217 | } else if (found) { | |
1218 | ssl_cipher_apply_rule(cipher_id, | |
1219 | alg_mkey, alg_auth, alg_enc, alg_mac, | |
3eb2aff4 | 1220 | min_tls, algo_strength, rule, -1, head_p, |
0f113f3e MC |
1221 | tail_p); |
1222 | } else { | |
1223 | while ((*l != '\0') && !ITEM_SEP(*l)) | |
1224 | l++; | |
1225 | } | |
1226 | if (*l == '\0') | |
1227 | break; /* done */ | |
1228 | } | |
1229 | ||
1230 | return (retval); | |
1231 | } | |
1232 | ||
14536c8c | 1233 | #ifndef OPENSSL_NO_EC |
2ea80354 | 1234 | static int check_suiteb_cipher_list(const SSL_METHOD *meth, CERT *c, |
0f113f3e MC |
1235 | const char **prule_str) |
1236 | { | |
1237 | unsigned int suiteb_flags = 0, suiteb_comb2 = 0; | |
13e228d6 | 1238 | if (strncmp(*prule_str, "SUITEB128ONLY", 13) == 0) { |
0f113f3e | 1239 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS_ONLY; |
13e228d6 | 1240 | } else if (strncmp(*prule_str, "SUITEB128C2", 11) == 0) { |
0f113f3e MC |
1241 | suiteb_comb2 = 1; |
1242 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS; | |
13e228d6 DSH |
1243 | } else if (strncmp(*prule_str, "SUITEB128", 9) == 0) { |
1244 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS; | |
1245 | } else if (strncmp(*prule_str, "SUITEB192", 9) == 0) { | |
0f113f3e | 1246 | suiteb_flags = SSL_CERT_FLAG_SUITEB_192_LOS; |
13e228d6 | 1247 | } |
0f113f3e MC |
1248 | |
1249 | if (suiteb_flags) { | |
1250 | c->cert_flags &= ~SSL_CERT_FLAG_SUITEB_128_LOS; | |
1251 | c->cert_flags |= suiteb_flags; | |
1252 | } else | |
1253 | suiteb_flags = c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS; | |
1254 | ||
1255 | if (!suiteb_flags) | |
1256 | return 1; | |
1257 | /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */ | |
1258 | ||
1259 | if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)) { | |
4fa52141 VD |
1260 | SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST, |
1261 | SSL_R_AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE); | |
0f113f3e MC |
1262 | return 0; |
1263 | } | |
10bf4fc2 | 1264 | # ifndef OPENSSL_NO_EC |
0f113f3e MC |
1265 | switch (suiteb_flags) { |
1266 | case SSL_CERT_FLAG_SUITEB_128_LOS: | |
1267 | if (suiteb_comb2) | |
1268 | *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1269 | else | |
1270 | *prule_str = | |
1271 | "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1272 | break; | |
1273 | case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY: | |
1274 | *prule_str = "ECDHE-ECDSA-AES128-GCM-SHA256"; | |
1275 | break; | |
1276 | case SSL_CERT_FLAG_SUITEB_192_LOS: | |
1277 | *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1278 | break; | |
1279 | } | |
0f113f3e MC |
1280 | return 1; |
1281 | # else | |
a230b26e | 1282 | SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST, SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE); |
0f113f3e MC |
1283 | return 0; |
1284 | # endif | |
1285 | } | |
14536c8c | 1286 | #endif |
2ea80354 | 1287 | |
0f113f3e MC |
1288 | STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER) |
1289 | **cipher_list, STACK_OF(SSL_CIPHER) | |
1290 | **cipher_list_by_id, | |
1291 | const char *rule_str, CERT *c) | |
1292 | { | |
1293 | int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; | |
6063453c | 1294 | uint32_t disabled_mkey, disabled_auth, disabled_enc, disabled_mac; |
0f113f3e MC |
1295 | STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; |
1296 | const char *rule_p; | |
1297 | CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; | |
1298 | const SSL_CIPHER **ca_list = NULL; | |
1299 | ||
1300 | /* | |
1301 | * Return with error if nothing to do. | |
1302 | */ | |
1303 | if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) | |
1304 | return NULL; | |
14536c8c | 1305 | #ifndef OPENSSL_NO_EC |
0f113f3e MC |
1306 | if (!check_suiteb_cipher_list(ssl_method, c, &rule_str)) |
1307 | return NULL; | |
14536c8c | 1308 | #endif |
2ea80354 | 1309 | |
0f113f3e MC |
1310 | /* |
1311 | * To reduce the work to do we only want to process the compiled | |
1312 | * in algorithms, so we first get the mask of disabled ciphers. | |
1313 | */ | |
633d49c7 DSH |
1314 | |
1315 | disabled_mkey = disabled_mkey_mask; | |
1316 | disabled_auth = disabled_auth_mask; | |
1317 | disabled_enc = disabled_enc_mask; | |
1318 | disabled_mac = disabled_mac_mask; | |
0f113f3e MC |
1319 | |
1320 | /* | |
1321 | * Now we have to collect the available ciphers from the compiled | |
1322 | * in ciphers. We cannot get more than the number compiled in, so | |
1323 | * it is used for allocation. | |
1324 | */ | |
1325 | num_of_ciphers = ssl_method->num_ciphers(); | |
55a9a16f | 1326 | |
b4faea50 | 1327 | co_list = OPENSSL_malloc(sizeof(*co_list) * num_of_ciphers); |
0f113f3e MC |
1328 | if (co_list == NULL) { |
1329 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); | |
1330 | return (NULL); /* Failure */ | |
1331 | } | |
1332 | ||
1333 | ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, | |
1334 | disabled_mkey, disabled_auth, disabled_enc, | |
a230b26e | 1335 | disabled_mac, co_list, &head, &tail); |
0f113f3e | 1336 | |
a556f342 | 1337 | /* Now arrange all ciphers by preference. */ |
0f113f3e MC |
1338 | |
1339 | /* | |
1340 | * Everything else being equal, prefer ephemeral ECDH over other key | |
a556f342 EK |
1341 | * exchange mechanisms. |
1342 | * For consistency, prefer ECDSA over RSA (though this only matters if the | |
1343 | * server has both certificates, and is using the DEFAULT, or a client | |
1344 | * preference). | |
0f113f3e | 1345 | */ |
a556f342 EK |
1346 | ssl_cipher_apply_rule(0, SSL_kECDHE, SSL_aECDSA, 0, 0, 0, 0, CIPHER_ADD, |
1347 | -1, &head, &tail); | |
0f113f3e MC |
1348 | ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, |
1349 | &tail); | |
1350 | ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, | |
1351 | &tail); | |
1352 | ||
a556f342 EK |
1353 | /* Within each strength group, we prefer GCM over CHACHA... */ |
1354 | ssl_cipher_apply_rule(0, 0, 0, SSL_AESGCM, 0, 0, 0, CIPHER_ADD, -1, | |
1355 | &head, &tail); | |
1356 | ssl_cipher_apply_rule(0, 0, 0, SSL_CHACHA20, 0, 0, 0, CIPHER_ADD, -1, | |
1357 | &head, &tail); | |
1358 | ||
a230b26e EK |
1359 | /* |
1360 | * ...and generally, our preferred cipher is AES. | |
1361 | * Note that AEADs will be bumped to take preference after sorting by | |
1362 | * strength. | |
1363 | */ | |
a556f342 EK |
1364 | ssl_cipher_apply_rule(0, 0, 0, SSL_AES ^ SSL_AESGCM, 0, 0, 0, CIPHER_ADD, |
1365 | -1, &head, &tail); | |
0f113f3e MC |
1366 | |
1367 | /* Temporarily enable everything else for sorting */ | |
1368 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); | |
1369 | ||
1370 | /* Low priority for MD5 */ | |
1371 | ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, | |
1372 | &tail); | |
1373 | ||
1374 | /* | |
1375 | * Move anonymous ciphers to the end. Usually, these will remain | |
1376 | * disabled. (For applications that allow them, they aren't too bad, but | |
1377 | * we prefer authenticated ciphers.) | |
1378 | */ | |
1379 | ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1380 | &tail); | |
1381 | ||
0f113f3e MC |
1382 | /* |
1383 | * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, | |
1384 | * &head, &tail); | |
1385 | */ | |
1386 | ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1387 | &tail); | |
1388 | ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1389 | &tail); | |
0f113f3e MC |
1390 | |
1391 | /* RC4 is sort-of broken -- move the the end */ | |
1392 | ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1393 | &tail); | |
1394 | ||
1395 | /* | |
1396 | * Now sort by symmetric encryption strength. The above ordering remains | |
1397 | * in force within each class | |
1398 | */ | |
1399 | if (!ssl_cipher_strength_sort(&head, &tail)) { | |
1400 | OPENSSL_free(co_list); | |
1401 | return NULL; | |
1402 | } | |
1403 | ||
a556f342 EK |
1404 | /* |
1405 | * Partially overrule strength sort to prefer TLS 1.2 ciphers/PRFs. | |
1406 | * TODO(openssl-team): is there an easier way to accomplish all this? | |
1407 | */ | |
3eb2aff4 | 1408 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, TLS1_2_VERSION, 0, CIPHER_BUMP, -1, |
a556f342 EK |
1409 | &head, &tail); |
1410 | ||
1411 | /* | |
1412 | * Irrespective of strength, enforce the following order: | |
1413 | * (EC)DHE + AEAD > (EC)DHE > rest of AEAD > rest. | |
1414 | * Within each group, ciphers remain sorted by strength and previous | |
1415 | * preference, i.e., | |
1416 | * 1) ECDHE > DHE | |
1417 | * 2) GCM > CHACHA | |
1418 | * 3) AES > rest | |
1419 | * 4) TLS 1.2 > legacy | |
1420 | * | |
1421 | * Because we now bump ciphers to the top of the list, we proceed in | |
1422 | * reverse order of preference. | |
1423 | */ | |
1424 | ssl_cipher_apply_rule(0, 0, 0, 0, SSL_AEAD, 0, 0, CIPHER_BUMP, -1, | |
1425 | &head, &tail); | |
1426 | ssl_cipher_apply_rule(0, SSL_kDHE | SSL_kECDHE, 0, 0, 0, 0, 0, | |
a230b26e | 1427 | CIPHER_BUMP, -1, &head, &tail); |
a556f342 | 1428 | ssl_cipher_apply_rule(0, SSL_kDHE | SSL_kECDHE, 0, 0, SSL_AEAD, 0, 0, |
a230b26e | 1429 | CIPHER_BUMP, -1, &head, &tail); |
a556f342 | 1430 | |
0f113f3e MC |
1431 | /* Now disable everything (maintaining the ordering!) */ |
1432 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); | |
1433 | ||
1434 | /* | |
1435 | * We also need cipher aliases for selecting based on the rule_str. | |
1436 | * There might be two types of entries in the rule_str: 1) names | |
1437 | * of ciphers themselves 2) aliases for groups of ciphers. | |
1438 | * For 1) we need the available ciphers and for 2) the cipher | |
1439 | * groups of cipher_aliases added together in one list (otherwise | |
1440 | * we would be happy with just the cipher_aliases table). | |
1441 | */ | |
b6eb9827 | 1442 | num_of_group_aliases = OSSL_NELEM(cipher_aliases); |
0f113f3e | 1443 | num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; |
b4faea50 | 1444 | ca_list = OPENSSL_malloc(sizeof(*ca_list) * num_of_alias_max); |
0f113f3e MC |
1445 | if (ca_list == NULL) { |
1446 | OPENSSL_free(co_list); | |
1447 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); | |
1448 | return (NULL); /* Failure */ | |
1449 | } | |
1450 | ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, | |
1451 | disabled_mkey, disabled_auth, disabled_enc, | |
6063453c | 1452 | disabled_mac, head); |
0f113f3e MC |
1453 | |
1454 | /* | |
1455 | * If the rule_string begins with DEFAULT, apply the default rule | |
1456 | * before using the (possibly available) additional rules. | |
1457 | */ | |
1458 | ok = 1; | |
1459 | rule_p = rule_str; | |
1460 | if (strncmp(rule_str, "DEFAULT", 7) == 0) { | |
1461 | ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, | |
1462 | &head, &tail, ca_list, c); | |
1463 | rule_p += 7; | |
1464 | if (*rule_p == ':') | |
1465 | rule_p++; | |
1466 | } | |
1467 | ||
1468 | if (ok && (strlen(rule_p) > 0)) | |
1469 | ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list, c); | |
1470 | ||
a230b26e | 1471 | OPENSSL_free(ca_list); /* Not needed anymore */ |
0f113f3e MC |
1472 | |
1473 | if (!ok) { /* Rule processing failure */ | |
1474 | OPENSSL_free(co_list); | |
1475 | return (NULL); | |
1476 | } | |
1477 | ||
1478 | /* | |
1479 | * Allocate new "cipherstack" for the result, return with error | |
1480 | * if we cannot get one. | |
1481 | */ | |
1482 | if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) { | |
1483 | OPENSSL_free(co_list); | |
1484 | return (NULL); | |
1485 | } | |
1486 | ||
1487 | /* | |
1488 | * The cipher selection for the list is done. The ciphers are added | |
1489 | * to the resulting precedence to the STACK_OF(SSL_CIPHER). | |
1490 | */ | |
1491 | for (curr = head; curr != NULL; curr = curr->next) { | |
b53338cb | 1492 | if (curr->active) { |
0f113f3e MC |
1493 | if (!sk_SSL_CIPHER_push(cipherstack, curr->cipher)) { |
1494 | OPENSSL_free(co_list); | |
1495 | sk_SSL_CIPHER_free(cipherstack); | |
1496 | return NULL; | |
1497 | } | |
d02b48c6 | 1498 | #ifdef CIPHER_DEBUG |
0f113f3e | 1499 | fprintf(stderr, "<%s>\n", curr->cipher->name); |
d02b48c6 | 1500 | #endif |
0f113f3e MC |
1501 | } |
1502 | } | |
1503 | OPENSSL_free(co_list); /* Not needed any longer */ | |
1504 | ||
1505 | tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); | |
1506 | if (tmp_cipher_list == NULL) { | |
1507 | sk_SSL_CIPHER_free(cipherstack); | |
1508 | return NULL; | |
1509 | } | |
25aaa98a | 1510 | sk_SSL_CIPHER_free(*cipher_list); |
0f113f3e MC |
1511 | *cipher_list = cipherstack; |
1512 | if (*cipher_list_by_id != NULL) | |
1513 | sk_SSL_CIPHER_free(*cipher_list_by_id); | |
1514 | *cipher_list_by_id = tmp_cipher_list; | |
a230b26e | 1515 | (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id, ssl_cipher_ptr_id_cmp); |
0f113f3e MC |
1516 | |
1517 | sk_SSL_CIPHER_sort(*cipher_list_by_id); | |
1518 | return (cipherstack); | |
1519 | } | |
d02b48c6 | 1520 | |
7689ed34 | 1521 | char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) |
0f113f3e | 1522 | { |
361a1191 | 1523 | const char *ver; |
0f113f3e | 1524 | const char *kx, *au, *enc, *mac; |
baf245ec | 1525 | uint32_t alg_mkey, alg_auth, alg_enc, alg_mac; |
a230b26e | 1526 | static const char *format = "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s\n"; |
0f113f3e | 1527 | |
baf245ec RS |
1528 | if (buf == NULL) { |
1529 | len = 128; | |
1530 | buf = OPENSSL_malloc(len); | |
1531 | if (buf == NULL) | |
1532 | return NULL; | |
1533 | } else if (len < 128) | |
1534 | return NULL; | |
1535 | ||
0f113f3e MC |
1536 | alg_mkey = cipher->algorithm_mkey; |
1537 | alg_auth = cipher->algorithm_auth; | |
1538 | alg_enc = cipher->algorithm_enc; | |
1539 | alg_mac = cipher->algorithm_mac; | |
0f113f3e | 1540 | |
3eb2aff4 | 1541 | ver = ssl_protocol_to_string(cipher->min_tls); |
0f113f3e MC |
1542 | |
1543 | switch (alg_mkey) { | |
1544 | case SSL_kRSA: | |
361a1191 | 1545 | kx = "RSA"; |
0f113f3e | 1546 | break; |
0f113f3e | 1547 | case SSL_kDHE: |
361a1191 | 1548 | kx = "DH"; |
0f113f3e | 1549 | break; |
0f113f3e MC |
1550 | case SSL_kECDHE: |
1551 | kx = "ECDH"; | |
1552 | break; | |
1553 | case SSL_kPSK: | |
1554 | kx = "PSK"; | |
1555 | break; | |
8baac6a2 DSH |
1556 | case SSL_kRSAPSK: |
1557 | kx = "RSAPSK"; | |
1558 | break; | |
1559 | case SSL_kECDHEPSK: | |
1560 | kx = "ECDHEPSK"; | |
1561 | break; | |
1562 | case SSL_kDHEPSK: | |
1563 | kx = "DHEPSK"; | |
1564 | break; | |
0f113f3e MC |
1565 | case SSL_kSRP: |
1566 | kx = "SRP"; | |
1567 | break; | |
1568 | case SSL_kGOST: | |
1569 | kx = "GOST"; | |
1570 | break; | |
e5c4bf93 DSH |
1571 | case SSL_kANY: |
1572 | kx = "any"; | |
1573 | break; | |
0f113f3e MC |
1574 | default: |
1575 | kx = "unknown"; | |
1576 | } | |
1577 | ||
1578 | switch (alg_auth) { | |
1579 | case SSL_aRSA: | |
1580 | au = "RSA"; | |
1581 | break; | |
1582 | case SSL_aDSS: | |
1583 | au = "DSS"; | |
1584 | break; | |
0f113f3e MC |
1585 | case SSL_aNULL: |
1586 | au = "None"; | |
1587 | break; | |
1588 | case SSL_aECDSA: | |
1589 | au = "ECDSA"; | |
1590 | break; | |
1591 | case SSL_aPSK: | |
1592 | au = "PSK"; | |
1593 | break; | |
1594 | case SSL_aSRP: | |
1595 | au = "SRP"; | |
1596 | break; | |
0f113f3e MC |
1597 | case SSL_aGOST01: |
1598 | au = "GOST01"; | |
1599 | break; | |
48722ff5 | 1600 | /* New GOST ciphersuites have both SSL_aGOST12 and SSL_aGOST01 bits */ |
e44380a9 DB |
1601 | case (SSL_aGOST12 | SSL_aGOST01): |
1602 | au = "GOST12"; | |
1603 | break; | |
e5c4bf93 DSH |
1604 | case SSL_aANY: |
1605 | au = "any"; | |
1606 | break; | |
0f113f3e MC |
1607 | default: |
1608 | au = "unknown"; | |
1609 | break; | |
1610 | } | |
1611 | ||
1612 | switch (alg_enc) { | |
1613 | case SSL_DES: | |
361a1191 | 1614 | enc = "DES(56)"; |
0f113f3e MC |
1615 | break; |
1616 | case SSL_3DES: | |
1617 | enc = "3DES(168)"; | |
1618 | break; | |
1619 | case SSL_RC4: | |
361a1191 | 1620 | enc = "RC4(128)"; |
0f113f3e MC |
1621 | break; |
1622 | case SSL_RC2: | |
361a1191 | 1623 | enc = "RC2(128)"; |
0f113f3e MC |
1624 | break; |
1625 | case SSL_IDEA: | |
1626 | enc = "IDEA(128)"; | |
1627 | break; | |
1628 | case SSL_eNULL: | |
1629 | enc = "None"; | |
1630 | break; | |
1631 | case SSL_AES128: | |
1632 | enc = "AES(128)"; | |
1633 | break; | |
1634 | case SSL_AES256: | |
1635 | enc = "AES(256)"; | |
1636 | break; | |
1637 | case SSL_AES128GCM: | |
1638 | enc = "AESGCM(128)"; | |
1639 | break; | |
1640 | case SSL_AES256GCM: | |
1641 | enc = "AESGCM(256)"; | |
1642 | break; | |
e75c5a79 DSH |
1643 | case SSL_AES128CCM: |
1644 | enc = "AESCCM(128)"; | |
1645 | break; | |
1646 | case SSL_AES256CCM: | |
1647 | enc = "AESCCM(256)"; | |
1648 | break; | |
3d3701ea DSH |
1649 | case SSL_AES128CCM8: |
1650 | enc = "AESCCM8(128)"; | |
1651 | break; | |
1652 | case SSL_AES256CCM8: | |
1653 | enc = "AESCCM8(256)"; | |
1654 | break; | |
0f113f3e MC |
1655 | case SSL_CAMELLIA128: |
1656 | enc = "Camellia(128)"; | |
1657 | break; | |
1658 | case SSL_CAMELLIA256: | |
1659 | enc = "Camellia(256)"; | |
1660 | break; | |
1661 | case SSL_SEED: | |
1662 | enc = "SEED(128)"; | |
1663 | break; | |
1664 | case SSL_eGOST2814789CNT: | |
e44380a9 | 1665 | case SSL_eGOST2814789CNT12: |
0f113f3e MC |
1666 | enc = "GOST89(256)"; |
1667 | break; | |
0d3587c7 MC |
1668 | case SSL_CHACHA20POLY1305: |
1669 | enc = "CHACHA20/POLY1305(256)"; | |
1670 | break; | |
0f113f3e MC |
1671 | default: |
1672 | enc = "unknown"; | |
1673 | break; | |
1674 | } | |
1675 | ||
1676 | switch (alg_mac) { | |
1677 | case SSL_MD5: | |
1678 | mac = "MD5"; | |
1679 | break; | |
1680 | case SSL_SHA1: | |
1681 | mac = "SHA1"; | |
1682 | break; | |
1683 | case SSL_SHA256: | |
1684 | mac = "SHA256"; | |
1685 | break; | |
1686 | case SSL_SHA384: | |
1687 | mac = "SHA384"; | |
1688 | break; | |
1689 | case SSL_AEAD: | |
1690 | mac = "AEAD"; | |
1691 | break; | |
1692 | case SSL_GOST89MAC: | |
e44380a9 | 1693 | case SSL_GOST89MAC12: |
0f113f3e MC |
1694 | mac = "GOST89"; |
1695 | break; | |
1696 | case SSL_GOST94: | |
1697 | mac = "GOST94"; | |
1698 | break; | |
e44380a9 DB |
1699 | case SSL_GOST12_256: |
1700 | case SSL_GOST12_512: | |
1701 | mac = "GOST2012"; | |
1702 | break; | |
0f113f3e MC |
1703 | default: |
1704 | mac = "unknown"; | |
1705 | break; | |
1706 | } | |
1707 | ||
361a1191 | 1708 | BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac); |
55a9a16f | 1709 | |
0f113f3e MC |
1710 | return (buf); |
1711 | } | |
d02b48c6 | 1712 | |
b11836a6 | 1713 | const char *SSL_CIPHER_get_version(const SSL_CIPHER *c) |
0f113f3e | 1714 | { |
0f113f3e | 1715 | if (c == NULL) |
baf245ec | 1716 | return "(NONE)"; |
ee3a6c64 VD |
1717 | |
1718 | /* | |
1719 | * Backwards-compatibility crutch. In almost all contexts we report TLS | |
1720 | * 1.0 as "TLSv1", but for ciphers we report "TLSv1.0". | |
1721 | */ | |
1722 | if (c->min_tls == TLS1_VERSION) | |
1723 | return "TLSv1.0"; | |
3eb2aff4 | 1724 | return ssl_protocol_to_string(c->min_tls); |
0f113f3e | 1725 | } |
d02b48c6 RE |
1726 | |
1727 | /* return the actual cipher being used */ | |
0821bcd4 | 1728 | const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) |
0f113f3e MC |
1729 | { |
1730 | if (c != NULL) | |
1731 | return (c->name); | |
1732 | return ("(NONE)"); | |
1733 | } | |
d02b48c6 | 1734 | |
657e60fa | 1735 | /* number of bits for symmetric cipher */ |
1c86d8fd | 1736 | int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) |
0f113f3e | 1737 | { |
1c86d8fd | 1738 | int ret = 0; |
0f113f3e MC |
1739 | |
1740 | if (c != NULL) { | |
1741 | if (alg_bits != NULL) | |
a230b26e EK |
1742 | *alg_bits = (int)c->alg_bits; |
1743 | ret = (int)c->strength_bits; | |
0f113f3e | 1744 | } |
90d9e49a | 1745 | return ret; |
0f113f3e | 1746 | } |
d02b48c6 | 1747 | |
90d9e49a | 1748 | uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c) |
0f113f3e MC |
1749 | { |
1750 | return c->id; | |
1751 | } | |
08557cf2 | 1752 | |
6b691a5c | 1753 | SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) |
0f113f3e MC |
1754 | { |
1755 | SSL_COMP *ctmp; | |
1756 | int i, nn; | |
1757 | ||
1758 | if ((n == 0) || (sk == NULL)) | |
1759 | return (NULL); | |
1760 | nn = sk_SSL_COMP_num(sk); | |
1761 | for (i = 0; i < nn; i++) { | |
1762 | ctmp = sk_SSL_COMP_value(sk, i); | |
1763 | if (ctmp->id == n) | |
1764 | return (ctmp); | |
1765 | } | |
1766 | return (NULL); | |
1767 | } | |
413c4f45 | 1768 | |
09b6c2ef | 1769 | #ifdef OPENSSL_NO_COMP |
9a555706 | 1770 | STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) |
0f113f3e MC |
1771 | { |
1772 | return NULL; | |
1773 | } | |
a230b26e | 1774 | |
9a555706 RS |
1775 | STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP) |
1776 | *meths) | |
0f113f3e | 1777 | { |
9a555706 | 1778 | return meths; |
0f113f3e | 1779 | } |
a230b26e | 1780 | |
9a555706 RS |
1781 | int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) |
1782 | { | |
1783 | return 1; | |
1784 | } | |
1785 | ||
09b6c2ef | 1786 | #else |
6b691a5c | 1787 | STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) |
0f113f3e MC |
1788 | { |
1789 | load_builtin_compressions(); | |
1790 | return (ssl_comp_methods); | |
1791 | } | |
1792 | ||
1793 | STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP) | |
1794 | *meths) | |
1795 | { | |
1796 | STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods; | |
1797 | ssl_comp_methods = meths; | |
1798 | return old_meths; | |
1799 | } | |
cbb67448 | 1800 | |
db7b5e0d | 1801 | static void cmeth_free(SSL_COMP *cm) |
0f113f3e MC |
1802 | { |
1803 | OPENSSL_free(cm); | |
1804 | } | |
db7b5e0d | 1805 | |
b3599dbb | 1806 | void ssl_comp_free_compression_methods_int(void) |
0f113f3e MC |
1807 | { |
1808 | STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods; | |
1809 | ssl_comp_methods = NULL; | |
1810 | sk_SSL_COMP_pop_free(old_meths, cmeth_free); | |
1811 | } | |
db7b5e0d | 1812 | |
6b691a5c | 1813 | int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) |
0f113f3e MC |
1814 | { |
1815 | SSL_COMP *comp; | |
413c4f45 | 1816 | |
9a555706 | 1817 | if (cm == NULL || COMP_get_type(cm) == NID_undef) |
0f113f3e | 1818 | return 1; |
9f495243 | 1819 | |
50e735f9 MC |
1820 | /*- |
1821 | * According to draft-ietf-tls-compression-04.txt, the | |
1822 | * compression number ranges should be the following: | |
1823 | * | |
1824 | * 0 to 63: methods defined by the IETF | |
1825 | * 64 to 192: external party methods assigned by IANA | |
1826 | * 193 to 255: reserved for private use | |
1827 | */ | |
0f113f3e MC |
1828 | if (id < 193 || id > 255) { |
1829 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, | |
1830 | SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); | |
e0670973 | 1831 | return 1; |
0f113f3e MC |
1832 | } |
1833 | ||
bbd86bf5 | 1834 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE); |
b4faea50 | 1835 | comp = OPENSSL_malloc(sizeof(*comp)); |
0f113f3e | 1836 | if (comp == NULL) { |
bbd86bf5 | 1837 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE); |
0f113f3e MC |
1838 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE); |
1839 | return (1); | |
1840 | } | |
1841 | ||
1842 | comp->id = id; | |
1843 | comp->method = cm; | |
1844 | load_builtin_compressions(); | |
1845 | if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) { | |
1846 | OPENSSL_free(comp); | |
bbd86bf5 | 1847 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE); |
0f113f3e MC |
1848 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, |
1849 | SSL_R_DUPLICATE_COMPRESSION_ID); | |
1850 | return (1); | |
bbd86bf5 | 1851 | } |
a230b26e | 1852 | if (ssl_comp_methods == NULL || !sk_SSL_COMP_push(ssl_comp_methods, comp)) { |
0f113f3e | 1853 | OPENSSL_free(comp); |
bbd86bf5 | 1854 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE); |
0f113f3e MC |
1855 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE); |
1856 | return (1); | |
0f113f3e | 1857 | } |
bbd86bf5 RS |
1858 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE); |
1859 | return (0); | |
0f113f3e | 1860 | } |
9a555706 | 1861 | #endif |
377dcdba RL |
1862 | |
1863 | const char *SSL_COMP_get_name(const COMP_METHOD *comp) | |
0f113f3e | 1864 | { |
9a555706 RS |
1865 | #ifndef OPENSSL_NO_COMP |
1866 | return comp ? COMP_get_name(comp) : NULL; | |
1867 | #else | |
0f113f3e | 1868 | return NULL; |
09b6c2ef | 1869 | #endif |
9a555706 RS |
1870 | } |
1871 | ||
e304d3e2 MC |
1872 | const char *SSL_COMP_get0_name(const SSL_COMP *comp) |
1873 | { | |
1874 | #ifndef OPENSSL_NO_COMP | |
1875 | return comp->name; | |
1876 | #else | |
1877 | return NULL; | |
1878 | #endif | |
1879 | } | |
1880 | ||
1881 | int SSL_COMP_get_id(const SSL_COMP *comp) | |
1882 | { | |
1883 | #ifndef OPENSSL_NO_COMP | |
1884 | return comp->id; | |
1885 | #else | |
1886 | return -1; | |
1887 | #endif | |
1888 | } | |
1889 | ||
d47c01a3 DSH |
1890 | /* For a cipher return the index corresponding to the certificate type */ |
1891 | int ssl_cipher_get_cert_index(const SSL_CIPHER *c) | |
0f113f3e | 1892 | { |
ce0c1f2b | 1893 | uint32_t alg_a; |
0f113f3e | 1894 | |
0f113f3e MC |
1895 | alg_a = c->algorithm_auth; |
1896 | ||
ce0c1f2b | 1897 | if (alg_a & SSL_aECDSA) |
0f113f3e | 1898 | return SSL_PKEY_ECC; |
0f113f3e MC |
1899 | else if (alg_a & SSL_aDSS) |
1900 | return SSL_PKEY_DSA_SIGN; | |
1901 | else if (alg_a & SSL_aRSA) | |
d0ff28f8 | 1902 | return SSL_PKEY_RSA; |
e44380a9 DB |
1903 | else if (alg_a & SSL_aGOST12) |
1904 | return SSL_PKEY_GOST_EC; | |
0f113f3e MC |
1905 | else if (alg_a & SSL_aGOST01) |
1906 | return SSL_PKEY_GOST01; | |
e44380a9 | 1907 | |
0f113f3e MC |
1908 | return -1; |
1909 | } | |
d47c01a3 | 1910 | |
60d685d1 BK |
1911 | const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr, |
1912 | int all) | |
0f113f3e | 1913 | { |
1316ca80 TS |
1914 | const SSL_CIPHER *c = ssl->method->get_cipher_by_char(ptr); |
1915 | ||
60d685d1 | 1916 | if (c == NULL || (!all && c->valid == 0)) |
0f113f3e MC |
1917 | return NULL; |
1918 | return c; | |
1919 | } | |
94a209d8 DSH |
1920 | |
1921 | const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr) | |
0f113f3e MC |
1922 | { |
1923 | return ssl->method->get_cipher_by_char(ptr); | |
1924 | } | |
98c9ce2f DSH |
1925 | |
1926 | int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c) | |
1927 | { | |
1928 | int i; | |
1929 | if (c == NULL) | |
3ec13237 | 1930 | return NID_undef; |
98c9ce2f DSH |
1931 | i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc); |
1932 | if (i == -1) | |
3ec13237 | 1933 | return NID_undef; |
98c9ce2f DSH |
1934 | return ssl_cipher_table_cipher[i].nid; |
1935 | } | |
1936 | ||
1937 | int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c) | |
1938 | { | |
1316ca80 TS |
1939 | int i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac); |
1940 | ||
98c9ce2f | 1941 | if (i == -1) |
3ec13237 | 1942 | return NID_undef; |
98c9ce2f DSH |
1943 | return ssl_cipher_table_mac[i].nid; |
1944 | } | |
3ec13237 TS |
1945 | |
1946 | int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *c) | |
1947 | { | |
1948 | int i = ssl_cipher_info_lookup(ssl_cipher_table_kx, c->algorithm_mkey); | |
1316ca80 | 1949 | |
3ec13237 TS |
1950 | if (i == -1) |
1951 | return NID_undef; | |
1952 | return ssl_cipher_table_kx[i].nid; | |
1953 | } | |
1954 | ||
1955 | int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *c) | |
1956 | { | |
1316ca80 TS |
1957 | int i = ssl_cipher_info_lookup(ssl_cipher_table_auth, c->algorithm_auth); |
1958 | ||
3ec13237 TS |
1959 | if (i == -1) |
1960 | return NID_undef; | |
8eb33e4f | 1961 | return ssl_cipher_table_auth[i].nid; |
3ec13237 TS |
1962 | } |
1963 | ||
1964 | int SSL_CIPHER_is_aead(const SSL_CIPHER *c) | |
1965 | { | |
1966 | return (c->algorithm_mac & SSL_AEAD) ? 1 : 0; | |
1967 | } | |
045bd047 DW |
1968 | |
1969 | int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead, | |
1970 | size_t *int_overhead, size_t *blocksize, | |
1971 | size_t *ext_overhead) | |
1972 | { | |
1973 | size_t mac = 0, in = 0, blk = 0, out = 0; | |
1974 | ||
1975 | /* Some hard-coded numbers for the CCM/Poly1305 MAC overhead | |
1976 | * because there are no handy #defines for those. */ | |
1977 | if (c->algorithm_enc & SSL_AESGCM) { | |
1978 | out = EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
1979 | } else if (c->algorithm_enc & (SSL_AES128CCM | SSL_AES256CCM)) { | |
1980 | out = EVP_CCM_TLS_EXPLICIT_IV_LEN + 16; | |
1981 | } else if (c->algorithm_enc & (SSL_AES128CCM8 | SSL_AES256CCM8)) { | |
1982 | out = EVP_CCM_TLS_EXPLICIT_IV_LEN + 8; | |
1983 | } else if (c->algorithm_enc & SSL_CHACHA20POLY1305) { | |
1984 | out = 16; | |
1985 | } else if (c->algorithm_mac & SSL_AEAD) { | |
1986 | /* We're supposed to have handled all the AEAD modes above */ | |
1987 | return 0; | |
1988 | } else { | |
1989 | /* Non-AEAD modes. Calculate MAC/cipher overhead separately */ | |
1990 | int digest_nid = SSL_CIPHER_get_digest_nid(c); | |
1991 | const EVP_MD *e_md = EVP_get_digestbynid(digest_nid); | |
1992 | ||
1993 | if (e_md == NULL) | |
1994 | return 0; | |
1995 | ||
1996 | mac = EVP_MD_size(e_md); | |
1997 | if (c->algorithm_enc != SSL_eNULL) { | |
1998 | int cipher_nid = SSL_CIPHER_get_cipher_nid(c); | |
1999 | const EVP_CIPHER *e_ciph = EVP_get_cipherbynid(cipher_nid); | |
2000 | ||
2001 | /* If it wasn't AEAD or SSL_eNULL, we expect it to be a | |
2002 | known CBC cipher. */ | |
2003 | if (e_ciph == NULL || | |
2004 | EVP_CIPHER_mode(e_ciph) != EVP_CIPH_CBC_MODE) | |
2005 | return 0; | |
2006 | ||
2007 | in = 1; /* padding length byte */ | |
2008 | out = EVP_CIPHER_iv_length(e_ciph); | |
2009 | blk = EVP_CIPHER_block_size(e_ciph); | |
2010 | } | |
2011 | } | |
2012 | ||
2013 | *mac_overhead = mac; | |
2014 | *int_overhead = in; | |
2015 | *blocksize = blk; | |
2016 | *ext_overhead = out; | |
2017 | ||
2018 | return 1; | |
2019 | } |