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846e33c7 | 1 | /* |
bbb4ceb8 | 2 | * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved. |
aa8f3d76 | 3 | * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved |
c80149d9 | 4 | * Copyright 2005 Nokia. All rights reserved. |
675f605d | 5 | * |
846e33c7 RS |
6 | * Licensed under the OpenSSL license (the "License"). You may not use |
7 | * this file except in compliance with the License. You can obtain a copy | |
8 | * in the file LICENSE in the source distribution or at | |
9 | * https://www.openssl.org/source/license.html | |
675f605d | 10 | */ |
846e33c7 | 11 | |
d02b48c6 | 12 | #include <stdio.h> |
5fd1478d | 13 | #include <ctype.h> |
ec577822 | 14 | #include <openssl/objects.h> |
3c27208f RS |
15 | #include <openssl/comp.h> |
16 | #include <openssl/engine.h> | |
5c4328f0 | 17 | #include <openssl/crypto.h> |
d02b48c6 | 18 | #include "ssl_locl.h" |
c2e4e5d2 | 19 | #include "internal/thread_once.h" |
d02b48c6 | 20 | |
0f113f3e MC |
21 | #define SSL_ENC_DES_IDX 0 |
22 | #define SSL_ENC_3DES_IDX 1 | |
23 | #define SSL_ENC_RC4_IDX 2 | |
24 | #define SSL_ENC_RC2_IDX 3 | |
25 | #define SSL_ENC_IDEA_IDX 4 | |
26 | #define SSL_ENC_NULL_IDX 5 | |
27 | #define SSL_ENC_AES128_IDX 6 | |
28 | #define SSL_ENC_AES256_IDX 7 | |
29 | #define SSL_ENC_CAMELLIA128_IDX 8 | |
30 | #define SSL_ENC_CAMELLIA256_IDX 9 | |
31 | #define SSL_ENC_GOST89_IDX 10 | |
32 | #define SSL_ENC_SEED_IDX 11 | |
33 | #define SSL_ENC_AES128GCM_IDX 12 | |
34 | #define SSL_ENC_AES256GCM_IDX 13 | |
e75c5a79 DSH |
35 | #define SSL_ENC_AES128CCM_IDX 14 |
36 | #define SSL_ENC_AES256CCM_IDX 15 | |
3d3701ea DSH |
37 | #define SSL_ENC_AES128CCM8_IDX 16 |
38 | #define SSL_ENC_AES256CCM8_IDX 17 | |
e44380a9 | 39 | #define SSL_ENC_GOST8912_IDX 18 |
a76ba82c AP |
40 | #define SSL_ENC_CHACHA_IDX 19 |
41 | #define SSL_ENC_NUM_IDX 20 | |
0f113f3e | 42 | |
98c9ce2f DSH |
43 | /* NB: make sure indices in these tables match values above */ |
44 | ||
45 | typedef struct { | |
90d9e49a | 46 | uint32_t mask; |
98c9ce2f DSH |
47 | int nid; |
48 | } ssl_cipher_table; | |
49 | ||
50 | /* Table of NIDs for each cipher */ | |
51 | static const ssl_cipher_table ssl_cipher_table_cipher[SSL_ENC_NUM_IDX] = { | |
52 | {SSL_DES, NID_des_cbc}, /* SSL_ENC_DES_IDX 0 */ | |
53 | {SSL_3DES, NID_des_ede3_cbc}, /* SSL_ENC_3DES_IDX 1 */ | |
54 | {SSL_RC4, NID_rc4}, /* SSL_ENC_RC4_IDX 2 */ | |
55 | {SSL_RC2, NID_rc2_cbc}, /* SSL_ENC_RC2_IDX 3 */ | |
56 | {SSL_IDEA, NID_idea_cbc}, /* SSL_ENC_IDEA_IDX 4 */ | |
57 | {SSL_eNULL, NID_undef}, /* SSL_ENC_NULL_IDX 5 */ | |
58 | {SSL_AES128, NID_aes_128_cbc}, /* SSL_ENC_AES128_IDX 6 */ | |
59 | {SSL_AES256, NID_aes_256_cbc}, /* SSL_ENC_AES256_IDX 7 */ | |
60 | {SSL_CAMELLIA128, NID_camellia_128_cbc}, /* SSL_ENC_CAMELLIA128_IDX 8 */ | |
61 | {SSL_CAMELLIA256, NID_camellia_256_cbc}, /* SSL_ENC_CAMELLIA256_IDX 9 */ | |
62 | {SSL_eGOST2814789CNT, NID_gost89_cnt}, /* SSL_ENC_GOST89_IDX 10 */ | |
63 | {SSL_SEED, NID_seed_cbc}, /* SSL_ENC_SEED_IDX 11 */ | |
64 | {SSL_AES128GCM, NID_aes_128_gcm}, /* SSL_ENC_AES128GCM_IDX 12 */ | |
e75c5a79 DSH |
65 | {SSL_AES256GCM, NID_aes_256_gcm}, /* SSL_ENC_AES256GCM_IDX 13 */ |
66 | {SSL_AES128CCM, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM_IDX 14 */ | |
3d3701ea DSH |
67 | {SSL_AES256CCM, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM_IDX 15 */ |
68 | {SSL_AES128CCM8, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM8_IDX 16 */ | |
e44380a9 DB |
69 | {SSL_AES256CCM8, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM8_IDX 17 */ |
70 | {SSL_eGOST2814789CNT12, NID_gost89_cnt_12}, /* SSL_ENC_GOST8912_IDX */ | |
a76ba82c | 71 | {SSL_CHACHA20POLY1305, NID_chacha20_poly1305}, |
98c9ce2f DSH |
72 | }; |
73 | ||
d42d0a4d | 74 | static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]; |
0f113f3e MC |
75 | |
76 | #define SSL_COMP_NULL_IDX 0 | |
77 | #define SSL_COMP_ZLIB_IDX 1 | |
78 | #define SSL_COMP_NUM_IDX 2 | |
79 | ||
80 | static STACK_OF(SSL_COMP) *ssl_comp_methods = NULL; | |
81 | ||
e4ad0763 | 82 | #ifndef OPENSSL_NO_COMP |
16203f7b | 83 | static CRYPTO_ONCE ssl_load_builtin_comp_once = CRYPTO_ONCE_STATIC_INIT; |
e4ad0763 | 84 | #endif |
16203f7b | 85 | |
0f113f3e MC |
86 | /* |
87 | * Constant SSL_MAX_DIGEST equal to size of digests array should be defined | |
88 | * in the ssl_locl.h | |
b948e2c5 | 89 | */ |
98c9ce2f | 90 | |
0f113f3e | 91 | #define SSL_MD_NUM_IDX SSL_MAX_DIGEST |
98c9ce2f DSH |
92 | |
93 | /* NB: make sure indices in this table matches values above */ | |
94 | static const ssl_cipher_table ssl_cipher_table_mac[SSL_MD_NUM_IDX] = { | |
95 | {SSL_MD5, NID_md5}, /* SSL_MD_MD5_IDX 0 */ | |
96 | {SSL_SHA1, NID_sha1}, /* SSL_MD_SHA1_IDX 1 */ | |
97 | {SSL_GOST94, NID_id_GostR3411_94}, /* SSL_MD_GOST94_IDX 2 */ | |
98 | {SSL_GOST89MAC, NID_id_Gost28147_89_MAC}, /* SSL_MD_GOST89MAC_IDX 3 */ | |
99 | {SSL_SHA256, NID_sha256}, /* SSL_MD_SHA256_IDX 4 */ | |
e44380a9 | 100 | {SSL_SHA384, NID_sha384}, /* SSL_MD_SHA384_IDX 5 */ |
a230b26e EK |
101 | {SSL_GOST12_256, NID_id_GostR3411_2012_256}, /* SSL_MD_GOST12_256_IDX 6 */ |
102 | {SSL_GOST89MAC12, NID_gost_mac_12}, /* SSL_MD_GOST89MAC12_IDX 7 */ | |
103 | {SSL_GOST12_512, NID_id_GostR3411_2012_512}, /* SSL_MD_GOST12_512_IDX 8 */ | |
7afd2312 DSH |
104 | {0, NID_md5_sha1}, /* SSL_MD_MD5_SHA1_IDX 9 */ |
105 | {0, NID_sha224}, /* SSL_MD_SHA224_IDX 10 */ | |
106 | {0, NID_sha512} /* SSL_MD_SHA512_IDX 11 */ | |
98c9ce2f DSH |
107 | }; |
108 | ||
0f113f3e | 109 | static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX] = { |
7afd2312 | 110 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL |
0f113f3e MC |
111 | }; |
112 | ||
a230b26e | 113 | /* *INDENT-OFF* */ |
3ec13237 | 114 | static const ssl_cipher_table ssl_cipher_table_kx[] = { |
a230b26e EK |
115 | {SSL_kRSA, NID_kx_rsa}, |
116 | {SSL_kECDHE, NID_kx_ecdhe}, | |
117 | {SSL_kDHE, NID_kx_dhe}, | |
118 | {SSL_kECDHEPSK, NID_kx_ecdhe_psk}, | |
119 | {SSL_kDHEPSK, NID_kx_dhe_psk}, | |
120 | {SSL_kRSAPSK, NID_kx_rsa_psk}, | |
121 | {SSL_kPSK, NID_kx_psk}, | |
122 | {SSL_kSRP, NID_kx_srp}, | |
7114af30 DSH |
123 | {SSL_kGOST, NID_kx_gost}, |
124 | {SSL_kANY, NID_kx_any} | |
3ec13237 TS |
125 | }; |
126 | ||
127 | static const ssl_cipher_table ssl_cipher_table_auth[] = { | |
a230b26e EK |
128 | {SSL_aRSA, NID_auth_rsa}, |
129 | {SSL_aECDSA, NID_auth_ecdsa}, | |
130 | {SSL_aPSK, NID_auth_psk}, | |
131 | {SSL_aDSS, NID_auth_dss}, | |
132 | {SSL_aGOST01, NID_auth_gost01}, | |
133 | {SSL_aGOST12, NID_auth_gost12}, | |
134 | {SSL_aSRP, NID_auth_srp}, | |
7114af30 DSH |
135 | {SSL_aNULL, NID_auth_null}, |
136 | {SSL_aANY, NID_auth_any} | |
3ec13237 | 137 | }; |
a230b26e | 138 | /* *INDENT-ON* */ |
3ec13237 | 139 | |
98c9ce2f DSH |
140 | /* Utility function for table lookup */ |
141 | static int ssl_cipher_info_find(const ssl_cipher_table * table, | |
90d9e49a | 142 | size_t table_cnt, uint32_t mask) |
98c9ce2f DSH |
143 | { |
144 | size_t i; | |
145 | for (i = 0; i < table_cnt; i++, table++) { | |
146 | if (table->mask == mask) | |
348240c6 | 147 | return (int)i; |
98c9ce2f DSH |
148 | } |
149 | return -1; | |
150 | } | |
151 | ||
152 | #define ssl_cipher_info_lookup(table, x) \ | |
b6eb9827 | 153 | ssl_cipher_info_find(table, OSSL_NELEM(table), x) |
98c9ce2f | 154 | |
0f113f3e MC |
155 | /* |
156 | * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation | |
157 | * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is | |
158 | * found | |
159 | */ | |
160 | static int ssl_mac_pkey_id[SSL_MD_NUM_IDX] = { | |
e44380a9 | 161 | /* MD5, SHA, GOST94, MAC89 */ |
0f113f3e | 162 | EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef, |
e44380a9 DB |
163 | /* SHA256, SHA384, GOST2012_256, MAC89-12 */ |
164 | EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef, | |
165 | /* GOST2012_512 */ | |
166 | EVP_PKEY_HMAC, | |
0f113f3e MC |
167 | }; |
168 | ||
8c1a5343 | 169 | static size_t ssl_mac_secret_size[SSL_MD_NUM_IDX]; |
0f113f3e MC |
170 | |
171 | #define CIPHER_ADD 1 | |
172 | #define CIPHER_KILL 2 | |
173 | #define CIPHER_DEL 3 | |
174 | #define CIPHER_ORD 4 | |
175 | #define CIPHER_SPECIAL 5 | |
a556f342 EK |
176 | /* |
177 | * Bump the ciphers to the top of the list. | |
178 | * This rule isn't currently supported by the public cipherstring API. | |
179 | */ | |
180 | #define CIPHER_BUMP 6 | |
0f113f3e MC |
181 | |
182 | typedef struct cipher_order_st { | |
183 | const SSL_CIPHER *cipher; | |
184 | int active; | |
185 | int dead; | |
186 | struct cipher_order_st *next, *prev; | |
187 | } CIPHER_ORDER; | |
188 | ||
189 | static const SSL_CIPHER cipher_aliases[] = { | |
190 | /* "ALL" doesn't include eNULL (must be specifically enabled) */ | |
bbb4ceb8 | 191 | {0, SSL_TXT_ALL, NULL, 0, 0, 0, ~SSL_eNULL}, |
0f113f3e | 192 | /* "COMPLEMENTOFALL" */ |
bbb4ceb8 | 193 | {0, SSL_TXT_CMPALL, NULL, 0, 0, 0, SSL_eNULL}, |
0f113f3e MC |
194 | |
195 | /* | |
196 | * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in | |
197 | * ALL!) | |
198 | */ | |
bbb4ceb8 | 199 | {0, SSL_TXT_CMPDEF, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_NOT_DEFAULT}, |
0f113f3e MC |
200 | |
201 | /* | |
202 | * key exchange aliases (some of those using only a single bit here | |
203 | * combine multiple key exchange algs according to the RFCs, e.g. kDHE | |
204 | * combines DHE_DSS and DHE_RSA) | |
205 | */ | |
bbb4ceb8 | 206 | {0, SSL_TXT_kRSA, NULL, 0, SSL_kRSA}, |
0f113f3e | 207 | |
bbb4ceb8 PY |
208 | {0, SSL_TXT_kEDH, NULL, 0, SSL_kDHE}, |
209 | {0, SSL_TXT_kDHE, NULL, 0, SSL_kDHE}, | |
210 | {0, SSL_TXT_DH, NULL, 0, SSL_kDHE}, | |
0f113f3e | 211 | |
bbb4ceb8 PY |
212 | {0, SSL_TXT_kEECDH, NULL, 0, SSL_kECDHE}, |
213 | {0, SSL_TXT_kECDHE, NULL, 0, SSL_kECDHE}, | |
214 | {0, SSL_TXT_ECDH, NULL, 0, SSL_kECDHE}, | |
0f113f3e | 215 | |
bbb4ceb8 PY |
216 | {0, SSL_TXT_kPSK, NULL, 0, SSL_kPSK}, |
217 | {0, SSL_TXT_kRSAPSK, NULL, 0, SSL_kRSAPSK}, | |
218 | {0, SSL_TXT_kECDHEPSK, NULL, 0, SSL_kECDHEPSK}, | |
219 | {0, SSL_TXT_kDHEPSK, NULL, 0, SSL_kDHEPSK}, | |
220 | {0, SSL_TXT_kSRP, NULL, 0, SSL_kSRP}, | |
221 | {0, SSL_TXT_kGOST, NULL, 0, SSL_kGOST}, | |
0f113f3e MC |
222 | |
223 | /* server authentication aliases */ | |
bbb4ceb8 PY |
224 | {0, SSL_TXT_aRSA, NULL, 0, 0, SSL_aRSA}, |
225 | {0, SSL_TXT_aDSS, NULL, 0, 0, SSL_aDSS}, | |
226 | {0, SSL_TXT_DSS, NULL, 0, 0, SSL_aDSS}, | |
227 | {0, SSL_TXT_aNULL, NULL, 0, 0, SSL_aNULL}, | |
228 | {0, SSL_TXT_aECDSA, NULL, 0, 0, SSL_aECDSA}, | |
229 | {0, SSL_TXT_ECDSA, NULL, 0, 0, SSL_aECDSA}, | |
230 | {0, SSL_TXT_aPSK, NULL, 0, 0, SSL_aPSK}, | |
231 | {0, SSL_TXT_aGOST01, NULL, 0, 0, SSL_aGOST01}, | |
232 | {0, SSL_TXT_aGOST12, NULL, 0, 0, SSL_aGOST12}, | |
233 | {0, SSL_TXT_aGOST, NULL, 0, 0, SSL_aGOST01 | SSL_aGOST12}, | |
234 | {0, SSL_TXT_aSRP, NULL, 0, 0, SSL_aSRP}, | |
0f113f3e MC |
235 | |
236 | /* aliases combining key exchange and server authentication */ | |
bbb4ceb8 PY |
237 | {0, SSL_TXT_EDH, NULL, 0, SSL_kDHE, ~SSL_aNULL}, |
238 | {0, SSL_TXT_DHE, NULL, 0, SSL_kDHE, ~SSL_aNULL}, | |
239 | {0, SSL_TXT_EECDH, NULL, 0, SSL_kECDHE, ~SSL_aNULL}, | |
240 | {0, SSL_TXT_ECDHE, NULL, 0, SSL_kECDHE, ~SSL_aNULL}, | |
241 | {0, SSL_TXT_NULL, NULL, 0, 0, 0, SSL_eNULL}, | |
242 | {0, SSL_TXT_RSA, NULL, 0, SSL_kRSA, SSL_aRSA}, | |
243 | {0, SSL_TXT_ADH, NULL, 0, SSL_kDHE, SSL_aNULL}, | |
244 | {0, SSL_TXT_AECDH, NULL, 0, SSL_kECDHE, SSL_aNULL}, | |
245 | {0, SSL_TXT_PSK, NULL, 0, SSL_PSK}, | |
246 | {0, SSL_TXT_SRP, NULL, 0, SSL_kSRP}, | |
0f113f3e MC |
247 | |
248 | /* symmetric encryption aliases */ | |
bbb4ceb8 PY |
249 | {0, SSL_TXT_3DES, NULL, 0, 0, 0, SSL_3DES}, |
250 | {0, SSL_TXT_RC4, NULL, 0, 0, 0, SSL_RC4}, | |
251 | {0, SSL_TXT_RC2, NULL, 0, 0, 0, SSL_RC2}, | |
252 | {0, SSL_TXT_IDEA, NULL, 0, 0, 0, SSL_IDEA}, | |
253 | {0, SSL_TXT_SEED, NULL, 0, 0, 0, SSL_SEED}, | |
254 | {0, SSL_TXT_eNULL, NULL, 0, 0, 0, SSL_eNULL}, | |
255 | {0, SSL_TXT_GOST, NULL, 0, 0, 0, SSL_eGOST2814789CNT | SSL_eGOST2814789CNT12}, | |
256 | {0, SSL_TXT_AES128, NULL, 0, 0, 0, | |
e5f969a8 | 257 | SSL_AES128 | SSL_AES128GCM | SSL_AES128CCM | SSL_AES128CCM8}, |
bbb4ceb8 | 258 | {0, SSL_TXT_AES256, NULL, 0, 0, 0, |
e5f969a8 | 259 | SSL_AES256 | SSL_AES256GCM | SSL_AES256CCM | SSL_AES256CCM8}, |
bbb4ceb8 PY |
260 | {0, SSL_TXT_AES, NULL, 0, 0, 0, SSL_AES}, |
261 | {0, SSL_TXT_AES_GCM, NULL, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM}, | |
262 | {0, SSL_TXT_AES_CCM, NULL, 0, 0, 0, | |
e5f969a8 | 263 | SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8}, |
bbb4ceb8 PY |
264 | {0, SSL_TXT_AES_CCM_8, NULL, 0, 0, 0, SSL_AES128CCM8 | SSL_AES256CCM8}, |
265 | {0, SSL_TXT_CAMELLIA128, NULL, 0, 0, 0, SSL_CAMELLIA128}, | |
266 | {0, SSL_TXT_CAMELLIA256, NULL, 0, 0, 0, SSL_CAMELLIA256}, | |
267 | {0, SSL_TXT_CAMELLIA, NULL, 0, 0, 0, SSL_CAMELLIA}, | |
268 | {0, SSL_TXT_CHACHA20, NULL, 0, 0, 0, SSL_CHACHA20}, | |
0f113f3e MC |
269 | |
270 | /* MAC aliases */ | |
bbb4ceb8 PY |
271 | {0, SSL_TXT_MD5, NULL, 0, 0, 0, 0, SSL_MD5}, |
272 | {0, SSL_TXT_SHA1, NULL, 0, 0, 0, 0, SSL_SHA1}, | |
273 | {0, SSL_TXT_SHA, NULL, 0, 0, 0, 0, SSL_SHA1}, | |
274 | {0, SSL_TXT_GOST94, NULL, 0, 0, 0, 0, SSL_GOST94}, | |
275 | {0, SSL_TXT_GOST89MAC, NULL, 0, 0, 0, 0, SSL_GOST89MAC | SSL_GOST89MAC12}, | |
276 | {0, SSL_TXT_SHA256, NULL, 0, 0, 0, 0, SSL_SHA256}, | |
277 | {0, SSL_TXT_SHA384, NULL, 0, 0, 0, 0, SSL_SHA384}, | |
278 | {0, SSL_TXT_GOST12, NULL, 0, 0, 0, 0, SSL_GOST12_256}, | |
0f113f3e MC |
279 | |
280 | /* protocol version aliases */ | |
bbb4ceb8 PY |
281 | {0, SSL_TXT_SSLV3, NULL, 0, 0, 0, 0, 0, SSL3_VERSION}, |
282 | {0, SSL_TXT_TLSV1, NULL, 0, 0, 0, 0, 0, TLS1_VERSION}, | |
283 | {0, "TLSv1.0", NULL, 0, 0, 0, 0, 0, TLS1_VERSION}, | |
284 | {0, SSL_TXT_TLSV1_2, NULL, 0, 0, 0, 0, 0, TLS1_2_VERSION}, | |
0f113f3e | 285 | |
0f113f3e | 286 | /* strength classes */ |
bbb4ceb8 PY |
287 | {0, SSL_TXT_LOW, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_LOW}, |
288 | {0, SSL_TXT_MEDIUM, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_MEDIUM}, | |
289 | {0, SSL_TXT_HIGH, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_HIGH}, | |
0f113f3e | 290 | /* FIPS 140-2 approved ciphersuite */ |
bbb4ceb8 | 291 | {0, SSL_TXT_FIPS, NULL, 0, 0, 0, ~SSL_eNULL, 0, 0, 0, 0, 0, SSL_FIPS}, |
0f113f3e MC |
292 | |
293 | /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */ | |
bbb4ceb8 | 294 | {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA, NULL, 0, |
e5f969a8 | 295 | SSL_kDHE, SSL_aDSS, SSL_3DES, SSL_SHA1, 0, 0, 0, 0, SSL_HIGH | SSL_FIPS}, |
bbb4ceb8 | 296 | {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA, NULL, 0, |
e5f969a8 | 297 | SSL_kDHE, SSL_aRSA, SSL_3DES, SSL_SHA1, 0, 0, 0, 0, SSL_HIGH | SSL_FIPS}, |
0f113f3e MC |
298 | |
299 | }; | |
300 | ||
301 | /* | |
302 | * Search for public key algorithm with given name and return its pkey_id if | |
303 | * it is available. Otherwise return 0 | |
81025661 | 304 | */ |
70531c14 DSH |
305 | #ifdef OPENSSL_NO_ENGINE |
306 | ||
81025661 | 307 | static int get_optional_pkey_id(const char *pkey_name) |
0f113f3e MC |
308 | { |
309 | const EVP_PKEY_ASN1_METHOD *ameth; | |
310 | int pkey_id = 0; | |
311 | ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1); | |
5f3d93e4 | 312 | if (ameth && EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, |
bbb4ceb8 | 313 | ameth) > 0) |
5f3d93e4 | 314 | return pkey_id; |
5f3d93e4 | 315 | return 0; |
0f113f3e | 316 | } |
d02b48c6 | 317 | |
70531c14 DSH |
318 | #else |
319 | ||
320 | static int get_optional_pkey_id(const char *pkey_name) | |
0f113f3e MC |
321 | { |
322 | const EVP_PKEY_ASN1_METHOD *ameth; | |
323 | ENGINE *tmpeng = NULL; | |
324 | int pkey_id = 0; | |
325 | ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1); | |
326 | if (ameth) { | |
5f3d93e4 MC |
327 | if (EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, |
328 | ameth) <= 0) | |
329 | pkey_id = 0; | |
0f113f3e | 330 | } |
7c96dbcd | 331 | ENGINE_finish(tmpeng); |
0f113f3e MC |
332 | return pkey_id; |
333 | } | |
70531c14 DSH |
334 | |
335 | #endif | |
336 | ||
633d49c7 | 337 | /* masks of disabled algorithms */ |
90d9e49a DSH |
338 | static uint32_t disabled_enc_mask; |
339 | static uint32_t disabled_mac_mask; | |
340 | static uint32_t disabled_mkey_mask; | |
341 | static uint32_t disabled_auth_mask; | |
633d49c7 | 342 | |
380a522f | 343 | int ssl_load_ciphers(void) |
0f113f3e | 344 | { |
98c9ce2f DSH |
345 | size_t i; |
346 | const ssl_cipher_table *t; | |
748f2546 | 347 | |
633d49c7 | 348 | disabled_enc_mask = 0; |
748f2546 | 349 | ssl_sort_cipher_list(); |
98c9ce2f | 350 | for (i = 0, t = ssl_cipher_table_cipher; i < SSL_ENC_NUM_IDX; i++, t++) { |
633d49c7 | 351 | if (t->nid == NID_undef) { |
98c9ce2f | 352 | ssl_cipher_methods[i] = NULL; |
633d49c7 DSH |
353 | } else { |
354 | const EVP_CIPHER *cipher = EVP_get_cipherbynid(t->nid); | |
355 | ssl_cipher_methods[i] = cipher; | |
356 | if (cipher == NULL) | |
357 | disabled_enc_mask |= t->mask; | |
358 | } | |
0f113f3e | 359 | } |
633d49c7 | 360 | disabled_mac_mask = 0; |
98c9ce2f | 361 | for (i = 0, t = ssl_cipher_table_mac; i < SSL_MD_NUM_IDX; i++, t++) { |
633d49c7 DSH |
362 | const EVP_MD *md = EVP_get_digestbynid(t->nid); |
363 | ssl_digest_methods[i] = md; | |
364 | if (md == NULL) { | |
365 | disabled_mac_mask |= t->mask; | |
366 | } else { | |
8c1a5343 | 367 | int tmpsize = EVP_MD_size(md); |
380a522f MC |
368 | if (!ossl_assert(tmpsize >= 0)) |
369 | return 0; | |
8c1a5343 | 370 | ssl_mac_secret_size[i] = tmpsize; |
98c9ce2f DSH |
371 | } |
372 | } | |
373 | /* Make sure we can access MD5 and SHA1 */ | |
380a522f MC |
374 | if (!ossl_assert(ssl_digest_methods[SSL_MD_MD5_IDX] != NULL)) |
375 | return 0; | |
376 | if (!ossl_assert(ssl_digest_methods[SSL_MD_SHA1_IDX] != NULL)) | |
377 | return 0; | |
633d49c7 DSH |
378 | |
379 | disabled_mkey_mask = 0; | |
380 | disabled_auth_mask = 0; | |
381 | ||
382 | #ifdef OPENSSL_NO_RSA | |
332a251f | 383 | disabled_mkey_mask |= SSL_kRSA | SSL_kRSAPSK; |
633d49c7 DSH |
384 | disabled_auth_mask |= SSL_aRSA; |
385 | #endif | |
386 | #ifdef OPENSSL_NO_DSA | |
387 | disabled_auth_mask |= SSL_aDSS; | |
388 | #endif | |
389 | #ifdef OPENSSL_NO_DH | |
bc71f910 | 390 | disabled_mkey_mask |= SSL_kDHE | SSL_kDHEPSK; |
633d49c7 DSH |
391 | #endif |
392 | #ifdef OPENSSL_NO_EC | |
ce0c1f2b DSH |
393 | disabled_mkey_mask |= SSL_kECDHEPSK; |
394 | disabled_auth_mask |= SSL_aECDSA; | |
633d49c7 DSH |
395 | #endif |
396 | #ifdef OPENSSL_NO_PSK | |
332a251f | 397 | disabled_mkey_mask |= SSL_PSK; |
633d49c7 DSH |
398 | disabled_auth_mask |= SSL_aPSK; |
399 | #endif | |
400 | #ifdef OPENSSL_NO_SRP | |
401 | disabled_mkey_mask |= SSL_kSRP; | |
402 | #endif | |
403 | ||
404 | /* | |
405 | * Check for presence of GOST 34.10 algorithms, and if they are not | |
406 | * present, disable appropriate auth and key exchange | |
407 | */ | |
e1fa652d | 408 | ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); |
bbb4ceb8 | 409 | if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) |
e1fa652d | 410 | ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32; |
bbb4ceb8 | 411 | else |
633d49c7 | 412 | disabled_mac_mask |= SSL_GOST89MAC; |
633d49c7 | 413 | |
a230b26e EK |
414 | ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX] = |
415 | get_optional_pkey_id("gost-mac-12"); | |
bbb4ceb8 | 416 | if (ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX]) |
e44380a9 | 417 | ssl_mac_secret_size[SSL_MD_GOST89MAC12_IDX] = 32; |
bbb4ceb8 | 418 | else |
e44380a9 | 419 | disabled_mac_mask |= SSL_GOST89MAC12; |
e44380a9 | 420 | |
633d49c7 | 421 | if (!get_optional_pkey_id("gost2001")) |
e44380a9 DB |
422 | disabled_auth_mask |= SSL_aGOST01 | SSL_aGOST12; |
423 | if (!get_optional_pkey_id("gost2012_256")) | |
424 | disabled_auth_mask |= SSL_aGOST12; | |
425 | if (!get_optional_pkey_id("gost2012_512")) | |
426 | disabled_auth_mask |= SSL_aGOST12; | |
633d49c7 DSH |
427 | /* |
428 | * Disable GOST key exchange if no GOST signature algs are available * | |
429 | */ | |
a230b26e EK |
430 | if ((disabled_auth_mask & (SSL_aGOST01 | SSL_aGOST12)) == |
431 | (SSL_aGOST01 | SSL_aGOST12)) | |
633d49c7 | 432 | disabled_mkey_mask |= SSL_kGOST; |
380a522f MC |
433 | |
434 | return 1; | |
0f113f3e MC |
435 | } |
436 | ||
09b6c2ef DSH |
437 | #ifndef OPENSSL_NO_COMP |
438 | ||
0f113f3e MC |
439 | static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b) |
440 | { | |
441 | return ((*a)->id - (*b)->id); | |
442 | } | |
7ba666fa | 443 | |
c2e4e5d2 | 444 | DEFINE_RUN_ONCE_STATIC(do_load_builtin_compressions) |
0f113f3e | 445 | { |
16203f7b AG |
446 | SSL_COMP *comp = NULL; |
447 | COMP_METHOD *method = COMP_zlib(); | |
448 | ||
449 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE); | |
450 | ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp); | |
451 | ||
452 | if (COMP_get_type(method) != NID_undef && ssl_comp_methods != NULL) { | |
453 | comp = OPENSSL_malloc(sizeof(*comp)); | |
454 | if (comp != NULL) { | |
455 | comp->method = method; | |
456 | comp->id = SSL_COMP_ZLIB_IDX; | |
457 | comp->name = COMP_get_name(method); | |
458 | sk_SSL_COMP_push(ssl_comp_methods, comp); | |
459 | sk_SSL_COMP_sort(ssl_comp_methods); | |
0f113f3e MC |
460 | } |
461 | } | |
16203f7b | 462 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE); |
c2e4e5d2 | 463 | return 1; |
16203f7b | 464 | } |
0f113f3e | 465 | |
912c258f | 466 | static int load_builtin_compressions(void) |
16203f7b | 467 | { |
912c258f | 468 | return RUN_ONCE(&ssl_load_builtin_comp_once, do_load_builtin_compressions); |
0f113f3e | 469 | } |
09b6c2ef | 470 | #endif |
7ba666fa | 471 | |
0821bcd4 | 472 | int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, |
0f113f3e | 473 | const EVP_MD **md, int *mac_pkey_type, |
8c1a5343 | 474 | size_t *mac_secret_size, SSL_COMP **comp, int use_etm) |
0f113f3e MC |
475 | { |
476 | int i; | |
477 | const SSL_CIPHER *c; | |
478 | ||
479 | c = s->cipher; | |
480 | if (c == NULL) | |
bbb4ceb8 | 481 | return 0; |
0f113f3e MC |
482 | if (comp != NULL) { |
483 | SSL_COMP ctmp; | |
09b6c2ef | 484 | #ifndef OPENSSL_NO_COMP |
912c258f RL |
485 | if (!load_builtin_compressions()) { |
486 | /* | |
487 | * Currently don't care, since a failure only means that | |
488 | * ssl_comp_methods is NULL, which is perfectly OK | |
489 | */ | |
490 | } | |
09b6c2ef | 491 | #endif |
0f113f3e MC |
492 | *comp = NULL; |
493 | ctmp.id = s->compress_meth; | |
494 | if (ssl_comp_methods != NULL) { | |
495 | i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp); | |
496 | if (i >= 0) | |
497 | *comp = sk_SSL_COMP_value(ssl_comp_methods, i); | |
498 | else | |
499 | *comp = NULL; | |
500 | } | |
69f68237 | 501 | /* If were only interested in comp then return success */ |
61986d32 | 502 | if ((enc == NULL) && (md == NULL)) |
69f68237 | 503 | return 1; |
0f113f3e MC |
504 | } |
505 | ||
506 | if ((enc == NULL) || (md == NULL)) | |
69f68237 | 507 | return 0; |
0f113f3e | 508 | |
98c9ce2f | 509 | i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc); |
0f113f3e | 510 | |
bbb4ceb8 | 511 | if (i == -1) { |
0f113f3e | 512 | *enc = NULL; |
bbb4ceb8 | 513 | } else { |
0f113f3e MC |
514 | if (i == SSL_ENC_NULL_IDX) |
515 | *enc = EVP_enc_null(); | |
516 | else | |
517 | *enc = ssl_cipher_methods[i]; | |
518 | } | |
519 | ||
98c9ce2f DSH |
520 | i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac); |
521 | if (i == -1) { | |
0f113f3e MC |
522 | *md = NULL; |
523 | if (mac_pkey_type != NULL) | |
524 | *mac_pkey_type = NID_undef; | |
525 | if (mac_secret_size != NULL) | |
526 | *mac_secret_size = 0; | |
527 | if (c->algorithm_mac == SSL_AEAD) | |
528 | mac_pkey_type = NULL; | |
529 | } else { | |
530 | *md = ssl_digest_methods[i]; | |
531 | if (mac_pkey_type != NULL) | |
532 | *mac_pkey_type = ssl_mac_pkey_id[i]; | |
533 | if (mac_secret_size != NULL) | |
534 | *mac_secret_size = ssl_mac_secret_size[i]; | |
535 | } | |
536 | ||
537 | if ((*enc != NULL) && | |
538 | (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER)) | |
539 | && (!mac_pkey_type || *mac_pkey_type != NID_undef)) { | |
540 | const EVP_CIPHER *evp; | |
541 | ||
542 | if (use_etm) | |
543 | return 1; | |
544 | ||
545 | if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR || | |
546 | s->ssl_version < TLS1_VERSION) | |
547 | return 1; | |
548 | ||
0f113f3e MC |
549 | if (c->algorithm_enc == SSL_RC4 && |
550 | c->algorithm_mac == SSL_MD5 && | |
551 | (evp = EVP_get_cipherbyname("RC4-HMAC-MD5"))) | |
552 | *enc = evp, *md = NULL; | |
553 | else if (c->algorithm_enc == SSL_AES128 && | |
554 | c->algorithm_mac == SSL_SHA1 && | |
555 | (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1"))) | |
556 | *enc = evp, *md = NULL; | |
557 | else if (c->algorithm_enc == SSL_AES256 && | |
558 | c->algorithm_mac == SSL_SHA1 && | |
559 | (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1"))) | |
560 | *enc = evp, *md = NULL; | |
561 | else if (c->algorithm_enc == SSL_AES128 && | |
562 | c->algorithm_mac == SSL_SHA256 && | |
563 | (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA256"))) | |
564 | *enc = evp, *md = NULL; | |
565 | else if (c->algorithm_enc == SSL_AES256 && | |
566 | c->algorithm_mac == SSL_SHA256 && | |
567 | (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA256"))) | |
568 | *enc = evp, *md = NULL; | |
bbb4ceb8 PY |
569 | return 1; |
570 | } else { | |
571 | return 0; | |
572 | } | |
0f113f3e MC |
573 | } |
574 | ||
152fbc28 | 575 | const EVP_MD *ssl_md(int idx) |
81025661 | 576 | { |
28ba2541 DSH |
577 | idx &= SSL_HANDSHAKE_MAC_MASK; |
578 | if (idx < 0 || idx >= SSL_MD_NUM_IDX) | |
579 | return NULL; | |
580 | return ssl_digest_methods[idx]; | |
581 | } | |
582 | ||
583 | const EVP_MD *ssl_handshake_md(SSL *s) | |
584 | { | |
152fbc28 | 585 | return ssl_md(ssl_get_algorithm2(s)); |
28ba2541 DSH |
586 | } |
587 | ||
588 | const EVP_MD *ssl_prf_md(SSL *s) | |
589 | { | |
152fbc28 | 590 | return ssl_md(ssl_get_algorithm2(s) >> TLS1_PRF_DGST_SHIFT); |
81025661 DSH |
591 | } |
592 | ||
58964a49 | 593 | #define ITEM_SEP(a) \ |
0f113f3e | 594 | (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) |
58964a49 | 595 | |
6b691a5c | 596 | static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
0f113f3e MC |
597 | CIPHER_ORDER **tail) |
598 | { | |
599 | if (curr == *tail) | |
600 | return; | |
601 | if (curr == *head) | |
602 | *head = curr->next; | |
603 | if (curr->prev != NULL) | |
604 | curr->prev->next = curr->next; | |
605 | if (curr->next != NULL) | |
606 | curr->next->prev = curr->prev; | |
607 | (*tail)->next = curr; | |
608 | curr->prev = *tail; | |
609 | curr->next = NULL; | |
610 | *tail = curr; | |
611 | } | |
58964a49 | 612 | |
fd5bc65c | 613 | static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
0f113f3e MC |
614 | CIPHER_ORDER **tail) |
615 | { | |
616 | if (curr == *head) | |
617 | return; | |
618 | if (curr == *tail) | |
619 | *tail = curr->prev; | |
620 | if (curr->next != NULL) | |
621 | curr->next->prev = curr->prev; | |
622 | if (curr->prev != NULL) | |
623 | curr->prev->next = curr->next; | |
624 | (*head)->prev = curr; | |
625 | curr->next = *head; | |
626 | curr->prev = NULL; | |
627 | *head = curr; | |
628 | } | |
629 | ||
018e57c7 | 630 | static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, |
0f113f3e | 631 | int num_of_ciphers, |
90d9e49a DSH |
632 | uint32_t disabled_mkey, |
633 | uint32_t disabled_auth, | |
634 | uint32_t disabled_enc, | |
635 | uint32_t disabled_mac, | |
0f113f3e MC |
636 | CIPHER_ORDER *co_list, |
637 | CIPHER_ORDER **head_p, | |
638 | CIPHER_ORDER **tail_p) | |
639 | { | |
640 | int i, co_list_num; | |
641 | const SSL_CIPHER *c; | |
642 | ||
643 | /* | |
644 | * We have num_of_ciphers descriptions compiled in, depending on the | |
645 | * method selected (SSLv3, TLSv1 etc). | |
646 | * These will later be sorted in a linked list with at most num | |
647 | * entries. | |
648 | */ | |
649 | ||
650 | /* Get the initial list of ciphers */ | |
651 | co_list_num = 0; /* actual count of ciphers */ | |
652 | for (i = 0; i < num_of_ciphers; i++) { | |
653 | c = ssl_method->get_cipher(i); | |
654 | /* drop those that use any of that is not available */ | |
ca3895f0 KR |
655 | if (c == NULL || !c->valid) |
656 | continue; | |
ca3895f0 KR |
657 | if ((c->algorithm_mkey & disabled_mkey) || |
658 | (c->algorithm_auth & disabled_auth) || | |
659 | (c->algorithm_enc & disabled_enc) || | |
660 | (c->algorithm_mac & disabled_mac)) | |
661 | continue; | |
662 | if (((ssl_method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) == 0) && | |
663 | c->min_tls == 0) | |
664 | continue; | |
665 | if (((ssl_method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) != 0) && | |
666 | c->min_dtls == 0) | |
667 | continue; | |
668 | ||
669 | co_list[co_list_num].cipher = c; | |
670 | co_list[co_list_num].next = NULL; | |
671 | co_list[co_list_num].prev = NULL; | |
672 | co_list[co_list_num].active = 0; | |
673 | co_list_num++; | |
0f113f3e MC |
674 | } |
675 | ||
676 | /* | |
677 | * Prepare linked list from list entries | |
678 | */ | |
679 | if (co_list_num > 0) { | |
680 | co_list[0].prev = NULL; | |
681 | ||
682 | if (co_list_num > 1) { | |
683 | co_list[0].next = &co_list[1]; | |
684 | ||
685 | for (i = 1; i < co_list_num - 1; i++) { | |
686 | co_list[i].prev = &co_list[i - 1]; | |
687 | co_list[i].next = &co_list[i + 1]; | |
688 | } | |
689 | ||
690 | co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; | |
691 | } | |
692 | ||
693 | co_list[co_list_num - 1].next = NULL; | |
694 | ||
695 | *head_p = &co_list[0]; | |
696 | *tail_p = &co_list[co_list_num - 1]; | |
697 | } | |
698 | } | |
d02b48c6 | 699 | |
babb3798 | 700 | static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, |
0f113f3e | 701 | int num_of_group_aliases, |
90d9e49a DSH |
702 | uint32_t disabled_mkey, |
703 | uint32_t disabled_auth, | |
704 | uint32_t disabled_enc, | |
705 | uint32_t disabled_mac, | |
0f113f3e MC |
706 | CIPHER_ORDER *head) |
707 | { | |
708 | CIPHER_ORDER *ciph_curr; | |
709 | const SSL_CIPHER **ca_curr; | |
710 | int i; | |
90d9e49a DSH |
711 | uint32_t mask_mkey = ~disabled_mkey; |
712 | uint32_t mask_auth = ~disabled_auth; | |
713 | uint32_t mask_enc = ~disabled_enc; | |
714 | uint32_t mask_mac = ~disabled_mac; | |
0f113f3e MC |
715 | |
716 | /* | |
717 | * First, add the real ciphers as already collected | |
718 | */ | |
719 | ciph_curr = head; | |
720 | ca_curr = ca_list; | |
721 | while (ciph_curr != NULL) { | |
722 | *ca_curr = ciph_curr->cipher; | |
723 | ca_curr++; | |
724 | ciph_curr = ciph_curr->next; | |
725 | } | |
726 | ||
727 | /* | |
728 | * Now we add the available ones from the cipher_aliases[] table. | |
729 | * They represent either one or more algorithms, some of which | |
730 | * in any affected category must be supported (set in enabled_mask), | |
731 | * or represent a cipher strength value (will be added in any case because algorithms=0). | |
732 | */ | |
733 | for (i = 0; i < num_of_group_aliases; i++) { | |
90d9e49a DSH |
734 | uint32_t algorithm_mkey = cipher_aliases[i].algorithm_mkey; |
735 | uint32_t algorithm_auth = cipher_aliases[i].algorithm_auth; | |
736 | uint32_t algorithm_enc = cipher_aliases[i].algorithm_enc; | |
737 | uint32_t algorithm_mac = cipher_aliases[i].algorithm_mac; | |
0f113f3e MC |
738 | |
739 | if (algorithm_mkey) | |
740 | if ((algorithm_mkey & mask_mkey) == 0) | |
741 | continue; | |
742 | ||
743 | if (algorithm_auth) | |
744 | if ((algorithm_auth & mask_auth) == 0) | |
745 | continue; | |
746 | ||
747 | if (algorithm_enc) | |
748 | if ((algorithm_enc & mask_enc) == 0) | |
749 | continue; | |
750 | ||
751 | if (algorithm_mac) | |
752 | if ((algorithm_mac & mask_mac) == 0) | |
753 | continue; | |
754 | ||
0f113f3e MC |
755 | *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); |
756 | ca_curr++; | |
757 | } | |
758 | ||
759 | *ca_curr = NULL; /* end of list */ | |
760 | } | |
d02b48c6 | 761 | |
90d9e49a DSH |
762 | static void ssl_cipher_apply_rule(uint32_t cipher_id, uint32_t alg_mkey, |
763 | uint32_t alg_auth, uint32_t alg_enc, | |
3eb2aff4 | 764 | uint32_t alg_mac, int min_tls, |
90d9e49a DSH |
765 | uint32_t algo_strength, int rule, |
766 | int32_t strength_bits, CIPHER_ORDER **head_p, | |
0f113f3e MC |
767 | CIPHER_ORDER **tail_p) |
768 | { | |
769 | CIPHER_ORDER *head, *tail, *curr, *next, *last; | |
770 | const SSL_CIPHER *cp; | |
771 | int reverse = 0; | |
018e57c7 DSH |
772 | |
773 | #ifdef CIPHER_DEBUG | |
0f113f3e | 774 | fprintf(stderr, |
d1776fde | 775 | "Applying rule %d with %08x/%08x/%08x/%08x/%08x %08x (%d)\n", |
3eb2aff4 | 776 | rule, alg_mkey, alg_auth, alg_enc, alg_mac, min_tls, |
0f113f3e | 777 | algo_strength, strength_bits); |
018e57c7 | 778 | #endif |
d02b48c6 | 779 | |
a556f342 | 780 | if (rule == CIPHER_DEL || rule == CIPHER_BUMP) |
a230b26e EK |
781 | reverse = 1; /* needed to maintain sorting between currently |
782 | * deleted ciphers */ | |
0f113f3e MC |
783 | |
784 | head = *head_p; | |
785 | tail = *tail_p; | |
786 | ||
787 | if (reverse) { | |
788 | next = tail; | |
789 | last = head; | |
790 | } else { | |
791 | next = head; | |
792 | last = tail; | |
793 | } | |
794 | ||
795 | curr = NULL; | |
796 | for (;;) { | |
797 | if (curr == last) | |
798 | break; | |
799 | ||
800 | curr = next; | |
801 | ||
802 | if (curr == NULL) | |
803 | break; | |
804 | ||
805 | next = reverse ? curr->prev : curr->next; | |
806 | ||
807 | cp = curr->cipher; | |
808 | ||
809 | /* | |
810 | * Selection criteria is either the value of strength_bits | |
811 | * or the algorithms used. | |
812 | */ | |
813 | if (strength_bits >= 0) { | |
814 | if (strength_bits != cp->strength_bits) | |
815 | continue; | |
816 | } else { | |
018e57c7 | 817 | #ifdef CIPHER_DEBUG |
0f113f3e | 818 | fprintf(stderr, |
d1776fde | 819 | "\nName: %s:\nAlgo = %08x/%08x/%08x/%08x/%08x Algo_strength = %08x\n", |
0f113f3e | 820 | cp->name, cp->algorithm_mkey, cp->algorithm_auth, |
a4a18b2f | 821 | cp->algorithm_enc, cp->algorithm_mac, cp->min_tls, |
0f113f3e | 822 | cp->algo_strength); |
323fa645 | 823 | #endif |
0ced42e0 MC |
824 | if (cipher_id != 0 && (cipher_id != cp->id)) |
825 | continue; | |
0f113f3e MC |
826 | if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) |
827 | continue; | |
828 | if (alg_auth && !(alg_auth & cp->algorithm_auth)) | |
829 | continue; | |
830 | if (alg_enc && !(alg_enc & cp->algorithm_enc)) | |
831 | continue; | |
832 | if (alg_mac && !(alg_mac & cp->algorithm_mac)) | |
833 | continue; | |
3eb2aff4 | 834 | if (min_tls && (min_tls != cp->min_tls)) |
0f113f3e | 835 | continue; |
88a9614b KR |
836 | if ((algo_strength & SSL_STRONG_MASK) |
837 | && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) | |
0f113f3e | 838 | continue; |
c84f7f4a MC |
839 | if ((algo_strength & SSL_DEFAULT_MASK) |
840 | && !(algo_strength & SSL_DEFAULT_MASK & cp->algo_strength)) | |
841 | continue; | |
0f113f3e | 842 | } |
018e57c7 DSH |
843 | |
844 | #ifdef CIPHER_DEBUG | |
0f113f3e | 845 | fprintf(stderr, "Action = %d\n", rule); |
018e57c7 DSH |
846 | #endif |
847 | ||
0f113f3e MC |
848 | /* add the cipher if it has not been added yet. */ |
849 | if (rule == CIPHER_ADD) { | |
850 | /* reverse == 0 */ | |
851 | if (!curr->active) { | |
852 | ll_append_tail(&head, curr, &tail); | |
853 | curr->active = 1; | |
854 | } | |
855 | } | |
856 | /* Move the added cipher to this location */ | |
857 | else if (rule == CIPHER_ORD) { | |
858 | /* reverse == 0 */ | |
859 | if (curr->active) { | |
860 | ll_append_tail(&head, curr, &tail); | |
861 | } | |
862 | } else if (rule == CIPHER_DEL) { | |
863 | /* reverse == 1 */ | |
864 | if (curr->active) { | |
865 | /* | |
866 | * most recently deleted ciphersuites get best positions for | |
867 | * any future CIPHER_ADD (note that the CIPHER_DEL loop works | |
868 | * in reverse to maintain the order) | |
869 | */ | |
870 | ll_append_head(&head, curr, &tail); | |
871 | curr->active = 0; | |
872 | } | |
a556f342 EK |
873 | } else if (rule == CIPHER_BUMP) { |
874 | if (curr->active) | |
875 | ll_append_head(&head, curr, &tail); | |
0f113f3e MC |
876 | } else if (rule == CIPHER_KILL) { |
877 | /* reverse == 0 */ | |
878 | if (head == curr) | |
879 | head = curr->next; | |
880 | else | |
881 | curr->prev->next = curr->next; | |
882 | if (tail == curr) | |
883 | tail = curr->prev; | |
884 | curr->active = 0; | |
885 | if (curr->next != NULL) | |
886 | curr->next->prev = curr->prev; | |
887 | if (curr->prev != NULL) | |
888 | curr->prev->next = curr->next; | |
889 | curr->next = NULL; | |
890 | curr->prev = NULL; | |
891 | } | |
892 | } | |
893 | ||
894 | *head_p = head; | |
895 | *tail_p = tail; | |
896 | } | |
018e57c7 | 897 | |
a717831d | 898 | static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, |
0f113f3e MC |
899 | CIPHER_ORDER **tail_p) |
900 | { | |
90d9e49a DSH |
901 | int32_t max_strength_bits; |
902 | int i, *number_uses; | |
0f113f3e MC |
903 | CIPHER_ORDER *curr; |
904 | ||
905 | /* | |
906 | * This routine sorts the ciphers with descending strength. The sorting | |
907 | * must keep the pre-sorted sequence, so we apply the normal sorting | |
908 | * routine as '+' movement to the end of the list. | |
909 | */ | |
910 | max_strength_bits = 0; | |
911 | curr = *head_p; | |
912 | while (curr != NULL) { | |
913 | if (curr->active && (curr->cipher->strength_bits > max_strength_bits)) | |
914 | max_strength_bits = curr->cipher->strength_bits; | |
915 | curr = curr->next; | |
916 | } | |
917 | ||
b51bce94 | 918 | number_uses = OPENSSL_zalloc(sizeof(int) * (max_strength_bits + 1)); |
a71edf3b | 919 | if (number_uses == NULL) { |
0f113f3e | 920 | SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE); |
bbb4ceb8 | 921 | return 0; |
0f113f3e | 922 | } |
0f113f3e MC |
923 | |
924 | /* | |
925 | * Now find the strength_bits values actually used | |
926 | */ | |
927 | curr = *head_p; | |
928 | while (curr != NULL) { | |
929 | if (curr->active) | |
930 | number_uses[curr->cipher->strength_bits]++; | |
931 | curr = curr->next; | |
932 | } | |
933 | /* | |
934 | * Go through the list of used strength_bits values in descending | |
935 | * order. | |
936 | */ | |
937 | for (i = max_strength_bits; i >= 0; i--) | |
938 | if (number_uses[i] > 0) | |
939 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, | |
940 | tail_p); | |
941 | ||
942 | OPENSSL_free(number_uses); | |
bbb4ceb8 | 943 | return 1; |
0f113f3e | 944 | } |
018e57c7 DSH |
945 | |
946 | static int ssl_cipher_process_rulestr(const char *rule_str, | |
0f113f3e MC |
947 | CIPHER_ORDER **head_p, |
948 | CIPHER_ORDER **tail_p, | |
949 | const SSL_CIPHER **ca_list, CERT *c) | |
950 | { | |
3eb2aff4 KR |
951 | uint32_t alg_mkey, alg_auth, alg_enc, alg_mac, algo_strength; |
952 | int min_tls; | |
0f113f3e MC |
953 | const char *l, *buf; |
954 | int j, multi, found, rule, retval, ok, buflen; | |
90d9e49a | 955 | uint32_t cipher_id = 0; |
0f113f3e MC |
956 | char ch; |
957 | ||
958 | retval = 1; | |
959 | l = rule_str; | |
bbb4ceb8 | 960 | for ( ; ; ) { |
0f113f3e MC |
961 | ch = *l; |
962 | ||
963 | if (ch == '\0') | |
964 | break; /* done */ | |
965 | if (ch == '-') { | |
966 | rule = CIPHER_DEL; | |
967 | l++; | |
968 | } else if (ch == '+') { | |
969 | rule = CIPHER_ORD; | |
970 | l++; | |
971 | } else if (ch == '!') { | |
972 | rule = CIPHER_KILL; | |
973 | l++; | |
974 | } else if (ch == '@') { | |
975 | rule = CIPHER_SPECIAL; | |
976 | l++; | |
977 | } else { | |
978 | rule = CIPHER_ADD; | |
979 | } | |
980 | ||
981 | if (ITEM_SEP(ch)) { | |
982 | l++; | |
983 | continue; | |
984 | } | |
985 | ||
986 | alg_mkey = 0; | |
987 | alg_auth = 0; | |
988 | alg_enc = 0; | |
989 | alg_mac = 0; | |
3eb2aff4 | 990 | min_tls = 0; |
0f113f3e MC |
991 | algo_strength = 0; |
992 | ||
993 | for (;;) { | |
994 | ch = *l; | |
995 | buf = l; | |
996 | buflen = 0; | |
ca570cfd | 997 | #ifndef CHARSET_EBCDIC |
0f113f3e MC |
998 | while (((ch >= 'A') && (ch <= 'Z')) || |
999 | ((ch >= '0') && (ch <= '9')) || | |
1000 | ((ch >= 'a') && (ch <= 'z')) || | |
1001 | (ch == '-') || (ch == '.') || (ch == '=')) | |
ca570cfd | 1002 | #else |
0f113f3e | 1003 | while (isalnum(ch) || (ch == '-') || (ch == '.') || (ch == '=')) |
ca570cfd | 1004 | #endif |
0f113f3e MC |
1005 | { |
1006 | ch = *(++l); | |
1007 | buflen++; | |
1008 | } | |
1009 | ||
1010 | if (buflen == 0) { | |
1011 | /* | |
1012 | * We hit something we cannot deal with, | |
1013 | * it is no command or separator nor | |
1014 | * alphanumeric, so we call this an error. | |
1015 | */ | |
a230b26e | 1016 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, SSL_R_INVALID_COMMAND); |
0f113f3e MC |
1017 | retval = found = 0; |
1018 | l++; | |
1019 | break; | |
1020 | } | |
1021 | ||
1022 | if (rule == CIPHER_SPECIAL) { | |
1023 | found = 0; /* unused -- avoid compiler warning */ | |
1024 | break; /* special treatment */ | |
1025 | } | |
1026 | ||
1027 | /* check for multi-part specification */ | |
1028 | if (ch == '+') { | |
1029 | multi = 1; | |
1030 | l++; | |
bbb4ceb8 | 1031 | } else { |
0f113f3e | 1032 | multi = 0; |
bbb4ceb8 | 1033 | } |
0f113f3e MC |
1034 | |
1035 | /* | |
1036 | * Now search for the cipher alias in the ca_list. Be careful | |
1037 | * with the strncmp, because the "buflen" limitation | |
1038 | * will make the rule "ADH:SOME" and the cipher | |
1039 | * "ADH-MY-CIPHER" look like a match for buflen=3. | |
1040 | * So additionally check whether the cipher name found | |
1041 | * has the correct length. We can save a strlen() call: | |
1042 | * just checking for the '\0' at the right place is | |
1043 | * sufficient, we have to strncmp() anyway. (We cannot | |
1044 | * use strcmp(), because buf is not '\0' terminated.) | |
1045 | */ | |
1046 | j = found = 0; | |
1047 | cipher_id = 0; | |
1048 | while (ca_list[j]) { | |
86885c28 RS |
1049 | if (strncmp(buf, ca_list[j]->name, buflen) == 0 |
1050 | && (ca_list[j]->name[buflen] == '\0')) { | |
0f113f3e MC |
1051 | found = 1; |
1052 | break; | |
1053 | } else | |
1054 | j++; | |
1055 | } | |
1056 | ||
1057 | if (!found) | |
1058 | break; /* ignore this entry */ | |
1059 | ||
1060 | if (ca_list[j]->algorithm_mkey) { | |
1061 | if (alg_mkey) { | |
1062 | alg_mkey &= ca_list[j]->algorithm_mkey; | |
1063 | if (!alg_mkey) { | |
1064 | found = 0; | |
1065 | break; | |
1066 | } | |
bbb4ceb8 | 1067 | } else { |
0f113f3e | 1068 | alg_mkey = ca_list[j]->algorithm_mkey; |
bbb4ceb8 | 1069 | } |
0f113f3e MC |
1070 | } |
1071 | ||
1072 | if (ca_list[j]->algorithm_auth) { | |
1073 | if (alg_auth) { | |
1074 | alg_auth &= ca_list[j]->algorithm_auth; | |
1075 | if (!alg_auth) { | |
1076 | found = 0; | |
1077 | break; | |
1078 | } | |
bbb4ceb8 | 1079 | } else { |
0f113f3e | 1080 | alg_auth = ca_list[j]->algorithm_auth; |
bbb4ceb8 | 1081 | } |
0f113f3e MC |
1082 | } |
1083 | ||
1084 | if (ca_list[j]->algorithm_enc) { | |
1085 | if (alg_enc) { | |
1086 | alg_enc &= ca_list[j]->algorithm_enc; | |
1087 | if (!alg_enc) { | |
1088 | found = 0; | |
1089 | break; | |
1090 | } | |
bbb4ceb8 | 1091 | } else { |
0f113f3e | 1092 | alg_enc = ca_list[j]->algorithm_enc; |
bbb4ceb8 | 1093 | } |
0f113f3e MC |
1094 | } |
1095 | ||
1096 | if (ca_list[j]->algorithm_mac) { | |
1097 | if (alg_mac) { | |
1098 | alg_mac &= ca_list[j]->algorithm_mac; | |
1099 | if (!alg_mac) { | |
1100 | found = 0; | |
1101 | break; | |
1102 | } | |
bbb4ceb8 | 1103 | } else { |
0f113f3e | 1104 | alg_mac = ca_list[j]->algorithm_mac; |
bbb4ceb8 | 1105 | } |
0f113f3e MC |
1106 | } |
1107 | ||
88a9614b KR |
1108 | if (ca_list[j]->algo_strength & SSL_STRONG_MASK) { |
1109 | if (algo_strength & SSL_STRONG_MASK) { | |
1110 | algo_strength &= | |
1111 | (ca_list[j]->algo_strength & SSL_STRONG_MASK) | | |
1112 | ~SSL_STRONG_MASK; | |
1113 | if (!(algo_strength & SSL_STRONG_MASK)) { | |
0f113f3e MC |
1114 | found = 0; |
1115 | break; | |
1116 | } | |
bbb4ceb8 | 1117 | } else { |
88a9614b | 1118 | algo_strength = ca_list[j]->algo_strength & SSL_STRONG_MASK; |
bbb4ceb8 | 1119 | } |
0f113f3e MC |
1120 | } |
1121 | ||
c84f7f4a MC |
1122 | if (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) { |
1123 | if (algo_strength & SSL_DEFAULT_MASK) { | |
1124 | algo_strength &= | |
1125 | (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) | | |
1126 | ~SSL_DEFAULT_MASK; | |
1127 | if (!(algo_strength & SSL_DEFAULT_MASK)) { | |
1128 | found = 0; | |
1129 | break; | |
1130 | } | |
bbb4ceb8 | 1131 | } else { |
c84f7f4a MC |
1132 | algo_strength |= |
1133 | ca_list[j]->algo_strength & SSL_DEFAULT_MASK; | |
bbb4ceb8 | 1134 | } |
c84f7f4a MC |
1135 | } |
1136 | ||
0f113f3e MC |
1137 | if (ca_list[j]->valid) { |
1138 | /* | |
1139 | * explicit ciphersuite found; its protocol version does not | |
1140 | * become part of the search pattern! | |
1141 | */ | |
1142 | ||
1143 | cipher_id = ca_list[j]->id; | |
1144 | } else { | |
1145 | /* | |
1146 | * not an explicit ciphersuite; only in this case, the | |
1147 | * protocol version is considered part of the search pattern | |
1148 | */ | |
1149 | ||
3eb2aff4 KR |
1150 | if (ca_list[j]->min_tls) { |
1151 | if (min_tls != 0 && min_tls != ca_list[j]->min_tls) { | |
1152 | found = 0; | |
1153 | break; | |
1154 | } else { | |
1155 | min_tls = ca_list[j]->min_tls; | |
1156 | } | |
0f113f3e MC |
1157 | } |
1158 | } | |
1159 | ||
1160 | if (!multi) | |
1161 | break; | |
1162 | } | |
1163 | ||
1164 | /* | |
1165 | * Ok, we have the rule, now apply it | |
1166 | */ | |
1167 | if (rule == CIPHER_SPECIAL) { /* special command */ | |
1168 | ok = 0; | |
bbb4ceb8 | 1169 | if ((buflen == 8) && strncmp(buf, "STRENGTH", 8) == 0) { |
0f113f3e | 1170 | ok = ssl_cipher_strength_sort(head_p, tail_p); |
bbb4ceb8 | 1171 | } else if (buflen == 10 && strncmp(buf, "SECLEVEL=", 9) == 0) { |
0f113f3e MC |
1172 | int level = buf[9] - '0'; |
1173 | if (level < 0 || level > 5) { | |
1174 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, | |
1175 | SSL_R_INVALID_COMMAND); | |
1176 | } else { | |
1177 | c->sec_level = level; | |
1178 | ok = 1; | |
1179 | } | |
bbb4ceb8 | 1180 | } else { |
a230b26e | 1181 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, SSL_R_INVALID_COMMAND); |
bbb4ceb8 | 1182 | } |
0f113f3e MC |
1183 | if (ok == 0) |
1184 | retval = 0; | |
1185 | /* | |
1186 | * We do not support any "multi" options | |
1187 | * together with "@", so throw away the | |
1188 | * rest of the command, if any left, until | |
1189 | * end or ':' is found. | |
1190 | */ | |
1191 | while ((*l != '\0') && !ITEM_SEP(*l)) | |
1192 | l++; | |
1193 | } else if (found) { | |
1194 | ssl_cipher_apply_rule(cipher_id, | |
1195 | alg_mkey, alg_auth, alg_enc, alg_mac, | |
3eb2aff4 | 1196 | min_tls, algo_strength, rule, -1, head_p, |
0f113f3e MC |
1197 | tail_p); |
1198 | } else { | |
1199 | while ((*l != '\0') && !ITEM_SEP(*l)) | |
1200 | l++; | |
1201 | } | |
1202 | if (*l == '\0') | |
1203 | break; /* done */ | |
1204 | } | |
1205 | ||
bbb4ceb8 | 1206 | return retval; |
0f113f3e MC |
1207 | } |
1208 | ||
14536c8c | 1209 | #ifndef OPENSSL_NO_EC |
2ea80354 | 1210 | static int check_suiteb_cipher_list(const SSL_METHOD *meth, CERT *c, |
0f113f3e MC |
1211 | const char **prule_str) |
1212 | { | |
1213 | unsigned int suiteb_flags = 0, suiteb_comb2 = 0; | |
13e228d6 | 1214 | if (strncmp(*prule_str, "SUITEB128ONLY", 13) == 0) { |
0f113f3e | 1215 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS_ONLY; |
13e228d6 | 1216 | } else if (strncmp(*prule_str, "SUITEB128C2", 11) == 0) { |
0f113f3e MC |
1217 | suiteb_comb2 = 1; |
1218 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS; | |
13e228d6 DSH |
1219 | } else if (strncmp(*prule_str, "SUITEB128", 9) == 0) { |
1220 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS; | |
1221 | } else if (strncmp(*prule_str, "SUITEB192", 9) == 0) { | |
0f113f3e | 1222 | suiteb_flags = SSL_CERT_FLAG_SUITEB_192_LOS; |
13e228d6 | 1223 | } |
0f113f3e MC |
1224 | |
1225 | if (suiteb_flags) { | |
1226 | c->cert_flags &= ~SSL_CERT_FLAG_SUITEB_128_LOS; | |
1227 | c->cert_flags |= suiteb_flags; | |
bbb4ceb8 | 1228 | } else { |
0f113f3e | 1229 | suiteb_flags = c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS; |
bbb4ceb8 | 1230 | } |
0f113f3e MC |
1231 | |
1232 | if (!suiteb_flags) | |
1233 | return 1; | |
1234 | /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */ | |
1235 | ||
1236 | if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)) { | |
4fa52141 VD |
1237 | SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST, |
1238 | SSL_R_AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE); | |
0f113f3e MC |
1239 | return 0; |
1240 | } | |
10bf4fc2 | 1241 | # ifndef OPENSSL_NO_EC |
0f113f3e MC |
1242 | switch (suiteb_flags) { |
1243 | case SSL_CERT_FLAG_SUITEB_128_LOS: | |
1244 | if (suiteb_comb2) | |
1245 | *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1246 | else | |
1247 | *prule_str = | |
1248 | "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1249 | break; | |
1250 | case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY: | |
1251 | *prule_str = "ECDHE-ECDSA-AES128-GCM-SHA256"; | |
1252 | break; | |
1253 | case SSL_CERT_FLAG_SUITEB_192_LOS: | |
1254 | *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1255 | break; | |
1256 | } | |
0f113f3e MC |
1257 | return 1; |
1258 | # else | |
a230b26e | 1259 | SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST, SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE); |
0f113f3e MC |
1260 | return 0; |
1261 | # endif | |
1262 | } | |
14536c8c | 1263 | #endif |
2ea80354 | 1264 | |
0f113f3e MC |
1265 | STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER) |
1266 | **cipher_list, STACK_OF(SSL_CIPHER) | |
1267 | **cipher_list_by_id, | |
1268 | const char *rule_str, CERT *c) | |
1269 | { | |
1270 | int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; | |
6063453c | 1271 | uint32_t disabled_mkey, disabled_auth, disabled_enc, disabled_mac; |
0f113f3e MC |
1272 | STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; |
1273 | const char *rule_p; | |
1274 | CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; | |
1275 | const SSL_CIPHER **ca_list = NULL; | |
1276 | ||
1277 | /* | |
1278 | * Return with error if nothing to do. | |
1279 | */ | |
1280 | if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) | |
1281 | return NULL; | |
14536c8c | 1282 | #ifndef OPENSSL_NO_EC |
0f113f3e MC |
1283 | if (!check_suiteb_cipher_list(ssl_method, c, &rule_str)) |
1284 | return NULL; | |
14536c8c | 1285 | #endif |
2ea80354 | 1286 | |
0f113f3e MC |
1287 | /* |
1288 | * To reduce the work to do we only want to process the compiled | |
1289 | * in algorithms, so we first get the mask of disabled ciphers. | |
1290 | */ | |
633d49c7 DSH |
1291 | |
1292 | disabled_mkey = disabled_mkey_mask; | |
1293 | disabled_auth = disabled_auth_mask; | |
1294 | disabled_enc = disabled_enc_mask; | |
1295 | disabled_mac = disabled_mac_mask; | |
0f113f3e MC |
1296 | |
1297 | /* | |
1298 | * Now we have to collect the available ciphers from the compiled | |
1299 | * in ciphers. We cannot get more than the number compiled in, so | |
1300 | * it is used for allocation. | |
1301 | */ | |
1302 | num_of_ciphers = ssl_method->num_ciphers(); | |
55a9a16f | 1303 | |
b4faea50 | 1304 | co_list = OPENSSL_malloc(sizeof(*co_list) * num_of_ciphers); |
0f113f3e MC |
1305 | if (co_list == NULL) { |
1306 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); | |
bbb4ceb8 | 1307 | return NULL; /* Failure */ |
0f113f3e MC |
1308 | } |
1309 | ||
1310 | ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, | |
1311 | disabled_mkey, disabled_auth, disabled_enc, | |
a230b26e | 1312 | disabled_mac, co_list, &head, &tail); |
0f113f3e | 1313 | |
a556f342 | 1314 | /* Now arrange all ciphers by preference. */ |
0f113f3e MC |
1315 | |
1316 | /* | |
1317 | * Everything else being equal, prefer ephemeral ECDH over other key | |
a556f342 EK |
1318 | * exchange mechanisms. |
1319 | * For consistency, prefer ECDSA over RSA (though this only matters if the | |
1320 | * server has both certificates, and is using the DEFAULT, or a client | |
1321 | * preference). | |
0f113f3e | 1322 | */ |
a556f342 EK |
1323 | ssl_cipher_apply_rule(0, SSL_kECDHE, SSL_aECDSA, 0, 0, 0, 0, CIPHER_ADD, |
1324 | -1, &head, &tail); | |
0f113f3e MC |
1325 | ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, |
1326 | &tail); | |
1327 | ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, | |
1328 | &tail); | |
1329 | ||
a556f342 EK |
1330 | /* Within each strength group, we prefer GCM over CHACHA... */ |
1331 | ssl_cipher_apply_rule(0, 0, 0, SSL_AESGCM, 0, 0, 0, CIPHER_ADD, -1, | |
1332 | &head, &tail); | |
1333 | ssl_cipher_apply_rule(0, 0, 0, SSL_CHACHA20, 0, 0, 0, CIPHER_ADD, -1, | |
1334 | &head, &tail); | |
1335 | ||
a230b26e EK |
1336 | /* |
1337 | * ...and generally, our preferred cipher is AES. | |
1338 | * Note that AEADs will be bumped to take preference after sorting by | |
1339 | * strength. | |
1340 | */ | |
a556f342 EK |
1341 | ssl_cipher_apply_rule(0, 0, 0, SSL_AES ^ SSL_AESGCM, 0, 0, 0, CIPHER_ADD, |
1342 | -1, &head, &tail); | |
0f113f3e MC |
1343 | |
1344 | /* Temporarily enable everything else for sorting */ | |
1345 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); | |
1346 | ||
1347 | /* Low priority for MD5 */ | |
1348 | ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, | |
1349 | &tail); | |
1350 | ||
1351 | /* | |
1352 | * Move anonymous ciphers to the end. Usually, these will remain | |
1353 | * disabled. (For applications that allow them, they aren't too bad, but | |
1354 | * we prefer authenticated ciphers.) | |
1355 | */ | |
1356 | ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1357 | &tail); | |
1358 | ||
0f113f3e MC |
1359 | /* |
1360 | * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, | |
1361 | * &head, &tail); | |
1362 | */ | |
1363 | ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1364 | &tail); | |
1365 | ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1366 | &tail); | |
0f113f3e MC |
1367 | |
1368 | /* RC4 is sort-of broken -- move the the end */ | |
1369 | ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1370 | &tail); | |
1371 | ||
1372 | /* | |
1373 | * Now sort by symmetric encryption strength. The above ordering remains | |
1374 | * in force within each class | |
1375 | */ | |
1376 | if (!ssl_cipher_strength_sort(&head, &tail)) { | |
1377 | OPENSSL_free(co_list); | |
1378 | return NULL; | |
1379 | } | |
1380 | ||
a556f342 EK |
1381 | /* |
1382 | * Partially overrule strength sort to prefer TLS 1.2 ciphers/PRFs. | |
1383 | * TODO(openssl-team): is there an easier way to accomplish all this? | |
1384 | */ | |
3eb2aff4 | 1385 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, TLS1_2_VERSION, 0, CIPHER_BUMP, -1, |
a556f342 EK |
1386 | &head, &tail); |
1387 | ||
1388 | /* | |
1389 | * Irrespective of strength, enforce the following order: | |
1390 | * (EC)DHE + AEAD > (EC)DHE > rest of AEAD > rest. | |
1391 | * Within each group, ciphers remain sorted by strength and previous | |
1392 | * preference, i.e., | |
1393 | * 1) ECDHE > DHE | |
1394 | * 2) GCM > CHACHA | |
1395 | * 3) AES > rest | |
1396 | * 4) TLS 1.2 > legacy | |
1397 | * | |
1398 | * Because we now bump ciphers to the top of the list, we proceed in | |
1399 | * reverse order of preference. | |
1400 | */ | |
1401 | ssl_cipher_apply_rule(0, 0, 0, 0, SSL_AEAD, 0, 0, CIPHER_BUMP, -1, | |
1402 | &head, &tail); | |
1403 | ssl_cipher_apply_rule(0, SSL_kDHE | SSL_kECDHE, 0, 0, 0, 0, 0, | |
a230b26e | 1404 | CIPHER_BUMP, -1, &head, &tail); |
a556f342 | 1405 | ssl_cipher_apply_rule(0, SSL_kDHE | SSL_kECDHE, 0, 0, SSL_AEAD, 0, 0, |
a230b26e | 1406 | CIPHER_BUMP, -1, &head, &tail); |
a556f342 | 1407 | |
0f113f3e MC |
1408 | /* Now disable everything (maintaining the ordering!) */ |
1409 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); | |
1410 | ||
1411 | /* | |
1412 | * We also need cipher aliases for selecting based on the rule_str. | |
1413 | * There might be two types of entries in the rule_str: 1) names | |
1414 | * of ciphers themselves 2) aliases for groups of ciphers. | |
1415 | * For 1) we need the available ciphers and for 2) the cipher | |
1416 | * groups of cipher_aliases added together in one list (otherwise | |
1417 | * we would be happy with just the cipher_aliases table). | |
1418 | */ | |
b6eb9827 | 1419 | num_of_group_aliases = OSSL_NELEM(cipher_aliases); |
0f113f3e | 1420 | num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; |
b4faea50 | 1421 | ca_list = OPENSSL_malloc(sizeof(*ca_list) * num_of_alias_max); |
0f113f3e MC |
1422 | if (ca_list == NULL) { |
1423 | OPENSSL_free(co_list); | |
1424 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); | |
bbb4ceb8 | 1425 | return NULL; /* Failure */ |
0f113f3e MC |
1426 | } |
1427 | ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, | |
1428 | disabled_mkey, disabled_auth, disabled_enc, | |
6063453c | 1429 | disabled_mac, head); |
0f113f3e MC |
1430 | |
1431 | /* | |
1432 | * If the rule_string begins with DEFAULT, apply the default rule | |
1433 | * before using the (possibly available) additional rules. | |
1434 | */ | |
1435 | ok = 1; | |
1436 | rule_p = rule_str; | |
1437 | if (strncmp(rule_str, "DEFAULT", 7) == 0) { | |
1438 | ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, | |
1439 | &head, &tail, ca_list, c); | |
1440 | rule_p += 7; | |
1441 | if (*rule_p == ':') | |
1442 | rule_p++; | |
1443 | } | |
1444 | ||
1445 | if (ok && (strlen(rule_p) > 0)) | |
1446 | ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list, c); | |
1447 | ||
a230b26e | 1448 | OPENSSL_free(ca_list); /* Not needed anymore */ |
0f113f3e MC |
1449 | |
1450 | if (!ok) { /* Rule processing failure */ | |
1451 | OPENSSL_free(co_list); | |
bbb4ceb8 | 1452 | return NULL; |
0f113f3e MC |
1453 | } |
1454 | ||
1455 | /* | |
1456 | * Allocate new "cipherstack" for the result, return with error | |
1457 | * if we cannot get one. | |
1458 | */ | |
1459 | if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) { | |
1460 | OPENSSL_free(co_list); | |
bbb4ceb8 | 1461 | return NULL; |
0f113f3e MC |
1462 | } |
1463 | ||
1464 | /* | |
1465 | * The cipher selection for the list is done. The ciphers are added | |
1466 | * to the resulting precedence to the STACK_OF(SSL_CIPHER). | |
1467 | */ | |
1468 | for (curr = head; curr != NULL; curr = curr->next) { | |
b53338cb | 1469 | if (curr->active) { |
0f113f3e MC |
1470 | if (!sk_SSL_CIPHER_push(cipherstack, curr->cipher)) { |
1471 | OPENSSL_free(co_list); | |
1472 | sk_SSL_CIPHER_free(cipherstack); | |
1473 | return NULL; | |
1474 | } | |
d02b48c6 | 1475 | #ifdef CIPHER_DEBUG |
0f113f3e | 1476 | fprintf(stderr, "<%s>\n", curr->cipher->name); |
d02b48c6 | 1477 | #endif |
0f113f3e MC |
1478 | } |
1479 | } | |
1480 | OPENSSL_free(co_list); /* Not needed any longer */ | |
1481 | ||
1482 | tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); | |
1483 | if (tmp_cipher_list == NULL) { | |
1484 | sk_SSL_CIPHER_free(cipherstack); | |
1485 | return NULL; | |
1486 | } | |
25aaa98a | 1487 | sk_SSL_CIPHER_free(*cipher_list); |
0f113f3e MC |
1488 | *cipher_list = cipherstack; |
1489 | if (*cipher_list_by_id != NULL) | |
1490 | sk_SSL_CIPHER_free(*cipher_list_by_id); | |
1491 | *cipher_list_by_id = tmp_cipher_list; | |
a230b26e | 1492 | (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id, ssl_cipher_ptr_id_cmp); |
0f113f3e MC |
1493 | |
1494 | sk_SSL_CIPHER_sort(*cipher_list_by_id); | |
bbb4ceb8 | 1495 | return cipherstack; |
0f113f3e | 1496 | } |
d02b48c6 | 1497 | |
7689ed34 | 1498 | char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) |
0f113f3e | 1499 | { |
361a1191 | 1500 | const char *ver; |
0f113f3e | 1501 | const char *kx, *au, *enc, *mac; |
baf245ec | 1502 | uint32_t alg_mkey, alg_auth, alg_enc, alg_mac; |
a230b26e | 1503 | static const char *format = "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s\n"; |
0f113f3e | 1504 | |
baf245ec RS |
1505 | if (buf == NULL) { |
1506 | len = 128; | |
1507 | buf = OPENSSL_malloc(len); | |
1508 | if (buf == NULL) | |
1509 | return NULL; | |
bbb4ceb8 | 1510 | } else if (len < 128) { |
baf245ec | 1511 | return NULL; |
bbb4ceb8 | 1512 | } |
baf245ec | 1513 | |
0f113f3e MC |
1514 | alg_mkey = cipher->algorithm_mkey; |
1515 | alg_auth = cipher->algorithm_auth; | |
1516 | alg_enc = cipher->algorithm_enc; | |
1517 | alg_mac = cipher->algorithm_mac; | |
0f113f3e | 1518 | |
3eb2aff4 | 1519 | ver = ssl_protocol_to_string(cipher->min_tls); |
0f113f3e MC |
1520 | |
1521 | switch (alg_mkey) { | |
1522 | case SSL_kRSA: | |
361a1191 | 1523 | kx = "RSA"; |
0f113f3e | 1524 | break; |
0f113f3e | 1525 | case SSL_kDHE: |
361a1191 | 1526 | kx = "DH"; |
0f113f3e | 1527 | break; |
0f113f3e MC |
1528 | case SSL_kECDHE: |
1529 | kx = "ECDH"; | |
1530 | break; | |
1531 | case SSL_kPSK: | |
1532 | kx = "PSK"; | |
1533 | break; | |
8baac6a2 DSH |
1534 | case SSL_kRSAPSK: |
1535 | kx = "RSAPSK"; | |
1536 | break; | |
1537 | case SSL_kECDHEPSK: | |
1538 | kx = "ECDHEPSK"; | |
1539 | break; | |
1540 | case SSL_kDHEPSK: | |
1541 | kx = "DHEPSK"; | |
1542 | break; | |
0f113f3e MC |
1543 | case SSL_kSRP: |
1544 | kx = "SRP"; | |
1545 | break; | |
1546 | case SSL_kGOST: | |
1547 | kx = "GOST"; | |
1548 | break; | |
e5c4bf93 DSH |
1549 | case SSL_kANY: |
1550 | kx = "any"; | |
1551 | break; | |
0f113f3e MC |
1552 | default: |
1553 | kx = "unknown"; | |
1554 | } | |
1555 | ||
1556 | switch (alg_auth) { | |
1557 | case SSL_aRSA: | |
1558 | au = "RSA"; | |
1559 | break; | |
1560 | case SSL_aDSS: | |
1561 | au = "DSS"; | |
1562 | break; | |
0f113f3e MC |
1563 | case SSL_aNULL: |
1564 | au = "None"; | |
1565 | break; | |
1566 | case SSL_aECDSA: | |
1567 | au = "ECDSA"; | |
1568 | break; | |
1569 | case SSL_aPSK: | |
1570 | au = "PSK"; | |
1571 | break; | |
1572 | case SSL_aSRP: | |
1573 | au = "SRP"; | |
1574 | break; | |
0f113f3e MC |
1575 | case SSL_aGOST01: |
1576 | au = "GOST01"; | |
1577 | break; | |
48722ff5 | 1578 | /* New GOST ciphersuites have both SSL_aGOST12 and SSL_aGOST01 bits */ |
e44380a9 DB |
1579 | case (SSL_aGOST12 | SSL_aGOST01): |
1580 | au = "GOST12"; | |
1581 | break; | |
e5c4bf93 DSH |
1582 | case SSL_aANY: |
1583 | au = "any"; | |
1584 | break; | |
0f113f3e MC |
1585 | default: |
1586 | au = "unknown"; | |
1587 | break; | |
1588 | } | |
1589 | ||
1590 | switch (alg_enc) { | |
1591 | case SSL_DES: | |
361a1191 | 1592 | enc = "DES(56)"; |
0f113f3e MC |
1593 | break; |
1594 | case SSL_3DES: | |
1595 | enc = "3DES(168)"; | |
1596 | break; | |
1597 | case SSL_RC4: | |
361a1191 | 1598 | enc = "RC4(128)"; |
0f113f3e MC |
1599 | break; |
1600 | case SSL_RC2: | |
361a1191 | 1601 | enc = "RC2(128)"; |
0f113f3e MC |
1602 | break; |
1603 | case SSL_IDEA: | |
1604 | enc = "IDEA(128)"; | |
1605 | break; | |
1606 | case SSL_eNULL: | |
1607 | enc = "None"; | |
1608 | break; | |
1609 | case SSL_AES128: | |
1610 | enc = "AES(128)"; | |
1611 | break; | |
1612 | case SSL_AES256: | |
1613 | enc = "AES(256)"; | |
1614 | break; | |
1615 | case SSL_AES128GCM: | |
1616 | enc = "AESGCM(128)"; | |
1617 | break; | |
1618 | case SSL_AES256GCM: | |
1619 | enc = "AESGCM(256)"; | |
1620 | break; | |
e75c5a79 DSH |
1621 | case SSL_AES128CCM: |
1622 | enc = "AESCCM(128)"; | |
1623 | break; | |
1624 | case SSL_AES256CCM: | |
1625 | enc = "AESCCM(256)"; | |
1626 | break; | |
3d3701ea DSH |
1627 | case SSL_AES128CCM8: |
1628 | enc = "AESCCM8(128)"; | |
1629 | break; | |
1630 | case SSL_AES256CCM8: | |
1631 | enc = "AESCCM8(256)"; | |
1632 | break; | |
0f113f3e MC |
1633 | case SSL_CAMELLIA128: |
1634 | enc = "Camellia(128)"; | |
1635 | break; | |
1636 | case SSL_CAMELLIA256: | |
1637 | enc = "Camellia(256)"; | |
1638 | break; | |
1639 | case SSL_SEED: | |
1640 | enc = "SEED(128)"; | |
1641 | break; | |
1642 | case SSL_eGOST2814789CNT: | |
e44380a9 | 1643 | case SSL_eGOST2814789CNT12: |
0f113f3e MC |
1644 | enc = "GOST89(256)"; |
1645 | break; | |
0d3587c7 MC |
1646 | case SSL_CHACHA20POLY1305: |
1647 | enc = "CHACHA20/POLY1305(256)"; | |
1648 | break; | |
0f113f3e MC |
1649 | default: |
1650 | enc = "unknown"; | |
1651 | break; | |
1652 | } | |
1653 | ||
1654 | switch (alg_mac) { | |
1655 | case SSL_MD5: | |
1656 | mac = "MD5"; | |
1657 | break; | |
1658 | case SSL_SHA1: | |
1659 | mac = "SHA1"; | |
1660 | break; | |
1661 | case SSL_SHA256: | |
1662 | mac = "SHA256"; | |
1663 | break; | |
1664 | case SSL_SHA384: | |
1665 | mac = "SHA384"; | |
1666 | break; | |
1667 | case SSL_AEAD: | |
1668 | mac = "AEAD"; | |
1669 | break; | |
1670 | case SSL_GOST89MAC: | |
e44380a9 | 1671 | case SSL_GOST89MAC12: |
0f113f3e MC |
1672 | mac = "GOST89"; |
1673 | break; | |
1674 | case SSL_GOST94: | |
1675 | mac = "GOST94"; | |
1676 | break; | |
e44380a9 DB |
1677 | case SSL_GOST12_256: |
1678 | case SSL_GOST12_512: | |
1679 | mac = "GOST2012"; | |
1680 | break; | |
0f113f3e MC |
1681 | default: |
1682 | mac = "unknown"; | |
1683 | break; | |
1684 | } | |
1685 | ||
361a1191 | 1686 | BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac); |
55a9a16f | 1687 | |
bbb4ceb8 | 1688 | return buf; |
0f113f3e | 1689 | } |
d02b48c6 | 1690 | |
b11836a6 | 1691 | const char *SSL_CIPHER_get_version(const SSL_CIPHER *c) |
0f113f3e | 1692 | { |
0f113f3e | 1693 | if (c == NULL) |
baf245ec | 1694 | return "(NONE)"; |
ee3a6c64 VD |
1695 | |
1696 | /* | |
1697 | * Backwards-compatibility crutch. In almost all contexts we report TLS | |
1698 | * 1.0 as "TLSv1", but for ciphers we report "TLSv1.0". | |
1699 | */ | |
1700 | if (c->min_tls == TLS1_VERSION) | |
1701 | return "TLSv1.0"; | |
3eb2aff4 | 1702 | return ssl_protocol_to_string(c->min_tls); |
0f113f3e | 1703 | } |
d02b48c6 RE |
1704 | |
1705 | /* return the actual cipher being used */ | |
0821bcd4 | 1706 | const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) |
0f113f3e MC |
1707 | { |
1708 | if (c != NULL) | |
bbb4ceb8 PY |
1709 | return c->name; |
1710 | return "(NONE)"; | |
1711 | } | |
1712 | ||
1713 | /* return the actual cipher being used in RFC standard name */ | |
1714 | const char *SSL_CIPHER_standard_name(const SSL_CIPHER *c) | |
1715 | { | |
1716 | if (c != NULL) | |
1717 | return c->stdname; | |
1718 | return "(NONE)"; | |
1719 | } | |
1720 | ||
1721 | /* return the OpenSSL name based on given RFC standard name */ | |
1722 | const char *OPENSSL_cipher_name(const char *stdname) | |
1723 | { | |
1724 | const SSL_CIPHER *c; | |
1725 | ||
1726 | if (stdname == NULL) | |
1727 | return "(NONE)"; | |
1728 | c = ssl3_get_cipher_by_std_name(stdname); | |
1729 | return SSL_CIPHER_get_name(c); | |
0f113f3e | 1730 | } |
d02b48c6 | 1731 | |
657e60fa | 1732 | /* number of bits for symmetric cipher */ |
1c86d8fd | 1733 | int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) |
0f113f3e | 1734 | { |
1c86d8fd | 1735 | int ret = 0; |
0f113f3e MC |
1736 | |
1737 | if (c != NULL) { | |
1738 | if (alg_bits != NULL) | |
a230b26e EK |
1739 | *alg_bits = (int)c->alg_bits; |
1740 | ret = (int)c->strength_bits; | |
0f113f3e | 1741 | } |
90d9e49a | 1742 | return ret; |
0f113f3e | 1743 | } |
d02b48c6 | 1744 | |
90d9e49a | 1745 | uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c) |
0f113f3e MC |
1746 | { |
1747 | return c->id; | |
1748 | } | |
08557cf2 | 1749 | |
6b691a5c | 1750 | SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) |
0f113f3e MC |
1751 | { |
1752 | SSL_COMP *ctmp; | |
1753 | int i, nn; | |
1754 | ||
1755 | if ((n == 0) || (sk == NULL)) | |
1756 | return (NULL); | |
1757 | nn = sk_SSL_COMP_num(sk); | |
1758 | for (i = 0; i < nn; i++) { | |
1759 | ctmp = sk_SSL_COMP_value(sk, i); | |
1760 | if (ctmp->id == n) | |
bbb4ceb8 | 1761 | return ctmp; |
0f113f3e | 1762 | } |
bbb4ceb8 | 1763 | return NULL; |
0f113f3e | 1764 | } |
413c4f45 | 1765 | |
09b6c2ef | 1766 | #ifdef OPENSSL_NO_COMP |
9a555706 | 1767 | STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) |
0f113f3e MC |
1768 | { |
1769 | return NULL; | |
1770 | } | |
a230b26e | 1771 | |
9a555706 RS |
1772 | STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP) |
1773 | *meths) | |
0f113f3e | 1774 | { |
9a555706 | 1775 | return meths; |
0f113f3e | 1776 | } |
a230b26e | 1777 | |
9a555706 RS |
1778 | int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) |
1779 | { | |
1780 | return 1; | |
1781 | } | |
1782 | ||
09b6c2ef | 1783 | #else |
6b691a5c | 1784 | STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) |
0f113f3e MC |
1785 | { |
1786 | load_builtin_compressions(); | |
bbb4ceb8 | 1787 | return ssl_comp_methods; |
0f113f3e MC |
1788 | } |
1789 | ||
1790 | STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP) | |
1791 | *meths) | |
1792 | { | |
1793 | STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods; | |
1794 | ssl_comp_methods = meths; | |
1795 | return old_meths; | |
1796 | } | |
cbb67448 | 1797 | |
db7b5e0d | 1798 | static void cmeth_free(SSL_COMP *cm) |
0f113f3e MC |
1799 | { |
1800 | OPENSSL_free(cm); | |
1801 | } | |
db7b5e0d | 1802 | |
b3599dbb | 1803 | void ssl_comp_free_compression_methods_int(void) |
0f113f3e MC |
1804 | { |
1805 | STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods; | |
1806 | ssl_comp_methods = NULL; | |
1807 | sk_SSL_COMP_pop_free(old_meths, cmeth_free); | |
1808 | } | |
db7b5e0d | 1809 | |
6b691a5c | 1810 | int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) |
0f113f3e MC |
1811 | { |
1812 | SSL_COMP *comp; | |
413c4f45 | 1813 | |
9a555706 | 1814 | if (cm == NULL || COMP_get_type(cm) == NID_undef) |
0f113f3e | 1815 | return 1; |
9f495243 | 1816 | |
50e735f9 MC |
1817 | /*- |
1818 | * According to draft-ietf-tls-compression-04.txt, the | |
1819 | * compression number ranges should be the following: | |
1820 | * | |
1821 | * 0 to 63: methods defined by the IETF | |
1822 | * 64 to 192: external party methods assigned by IANA | |
1823 | * 193 to 255: reserved for private use | |
1824 | */ | |
0f113f3e MC |
1825 | if (id < 193 || id > 255) { |
1826 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, | |
1827 | SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); | |
e0670973 | 1828 | return 1; |
0f113f3e MC |
1829 | } |
1830 | ||
bbd86bf5 | 1831 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE); |
b4faea50 | 1832 | comp = OPENSSL_malloc(sizeof(*comp)); |
0f113f3e | 1833 | if (comp == NULL) { |
bbd86bf5 | 1834 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE); |
0f113f3e | 1835 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE); |
bbb4ceb8 | 1836 | return 1; |
0f113f3e MC |
1837 | } |
1838 | ||
1839 | comp->id = id; | |
1840 | comp->method = cm; | |
1841 | load_builtin_compressions(); | |
1842 | if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) { | |
1843 | OPENSSL_free(comp); | |
bbd86bf5 | 1844 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE); |
0f113f3e MC |
1845 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, |
1846 | SSL_R_DUPLICATE_COMPRESSION_ID); | |
bbb4ceb8 | 1847 | return 1; |
bbd86bf5 | 1848 | } |
a230b26e | 1849 | if (ssl_comp_methods == NULL || !sk_SSL_COMP_push(ssl_comp_methods, comp)) { |
0f113f3e | 1850 | OPENSSL_free(comp); |
bbd86bf5 | 1851 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE); |
0f113f3e | 1852 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE); |
bbb4ceb8 | 1853 | return 1; |
0f113f3e | 1854 | } |
bbd86bf5 | 1855 | CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE); |
bbb4ceb8 | 1856 | return 0; |
0f113f3e | 1857 | } |
9a555706 | 1858 | #endif |
377dcdba RL |
1859 | |
1860 | const char *SSL_COMP_get_name(const COMP_METHOD *comp) | |
0f113f3e | 1861 | { |
9a555706 RS |
1862 | #ifndef OPENSSL_NO_COMP |
1863 | return comp ? COMP_get_name(comp) : NULL; | |
1864 | #else | |
0f113f3e | 1865 | return NULL; |
09b6c2ef | 1866 | #endif |
9a555706 RS |
1867 | } |
1868 | ||
e304d3e2 MC |
1869 | const char *SSL_COMP_get0_name(const SSL_COMP *comp) |
1870 | { | |
1871 | #ifndef OPENSSL_NO_COMP | |
1872 | return comp->name; | |
1873 | #else | |
1874 | return NULL; | |
1875 | #endif | |
1876 | } | |
1877 | ||
1878 | int SSL_COMP_get_id(const SSL_COMP *comp) | |
1879 | { | |
1880 | #ifndef OPENSSL_NO_COMP | |
1881 | return comp->id; | |
1882 | #else | |
1883 | return -1; | |
1884 | #endif | |
1885 | } | |
1886 | ||
60d685d1 BK |
1887 | const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr, |
1888 | int all) | |
0f113f3e | 1889 | { |
1316ca80 TS |
1890 | const SSL_CIPHER *c = ssl->method->get_cipher_by_char(ptr); |
1891 | ||
60d685d1 | 1892 | if (c == NULL || (!all && c->valid == 0)) |
0f113f3e MC |
1893 | return NULL; |
1894 | return c; | |
1895 | } | |
94a209d8 DSH |
1896 | |
1897 | const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr) | |
0f113f3e MC |
1898 | { |
1899 | return ssl->method->get_cipher_by_char(ptr); | |
1900 | } | |
98c9ce2f DSH |
1901 | |
1902 | int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c) | |
1903 | { | |
1904 | int i; | |
1905 | if (c == NULL) | |
3ec13237 | 1906 | return NID_undef; |
98c9ce2f DSH |
1907 | i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc); |
1908 | if (i == -1) | |
3ec13237 | 1909 | return NID_undef; |
98c9ce2f DSH |
1910 | return ssl_cipher_table_cipher[i].nid; |
1911 | } | |
1912 | ||
1913 | int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c) | |
1914 | { | |
1316ca80 TS |
1915 | int i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac); |
1916 | ||
98c9ce2f | 1917 | if (i == -1) |
3ec13237 | 1918 | return NID_undef; |
98c9ce2f DSH |
1919 | return ssl_cipher_table_mac[i].nid; |
1920 | } | |
3ec13237 TS |
1921 | |
1922 | int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *c) | |
1923 | { | |
1924 | int i = ssl_cipher_info_lookup(ssl_cipher_table_kx, c->algorithm_mkey); | |
1316ca80 | 1925 | |
3ec13237 TS |
1926 | if (i == -1) |
1927 | return NID_undef; | |
1928 | return ssl_cipher_table_kx[i].nid; | |
1929 | } | |
1930 | ||
1931 | int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *c) | |
1932 | { | |
1316ca80 TS |
1933 | int i = ssl_cipher_info_lookup(ssl_cipher_table_auth, c->algorithm_auth); |
1934 | ||
3ec13237 TS |
1935 | if (i == -1) |
1936 | return NID_undef; | |
8eb33e4f | 1937 | return ssl_cipher_table_auth[i].nid; |
3ec13237 TS |
1938 | } |
1939 | ||
ba4df682 MC |
1940 | const EVP_MD *SSL_CIPHER_get_handshake_digest(const SSL_CIPHER *c) |
1941 | { | |
72257204 | 1942 | int idx = c->algorithm2 & SSL_HANDSHAKE_MAC_MASK; |
ba4df682 | 1943 | |
ba4df682 MC |
1944 | if (idx < 0 || idx >= SSL_MD_NUM_IDX) |
1945 | return NULL; | |
1946 | return ssl_digest_methods[idx]; | |
1947 | } | |
1948 | ||
3ec13237 TS |
1949 | int SSL_CIPHER_is_aead(const SSL_CIPHER *c) |
1950 | { | |
1951 | return (c->algorithm_mac & SSL_AEAD) ? 1 : 0; | |
1952 | } | |
045bd047 DW |
1953 | |
1954 | int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead, | |
1955 | size_t *int_overhead, size_t *blocksize, | |
1956 | size_t *ext_overhead) | |
1957 | { | |
1958 | size_t mac = 0, in = 0, blk = 0, out = 0; | |
1959 | ||
1960 | /* Some hard-coded numbers for the CCM/Poly1305 MAC overhead | |
1961 | * because there are no handy #defines for those. */ | |
1962 | if (c->algorithm_enc & SSL_AESGCM) { | |
1963 | out = EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; | |
1964 | } else if (c->algorithm_enc & (SSL_AES128CCM | SSL_AES256CCM)) { | |
1965 | out = EVP_CCM_TLS_EXPLICIT_IV_LEN + 16; | |
1966 | } else if (c->algorithm_enc & (SSL_AES128CCM8 | SSL_AES256CCM8)) { | |
1967 | out = EVP_CCM_TLS_EXPLICIT_IV_LEN + 8; | |
1968 | } else if (c->algorithm_enc & SSL_CHACHA20POLY1305) { | |
1969 | out = 16; | |
1970 | } else if (c->algorithm_mac & SSL_AEAD) { | |
1971 | /* We're supposed to have handled all the AEAD modes above */ | |
1972 | return 0; | |
1973 | } else { | |
1974 | /* Non-AEAD modes. Calculate MAC/cipher overhead separately */ | |
1975 | int digest_nid = SSL_CIPHER_get_digest_nid(c); | |
1976 | const EVP_MD *e_md = EVP_get_digestbynid(digest_nid); | |
1977 | ||
1978 | if (e_md == NULL) | |
1979 | return 0; | |
1980 | ||
1981 | mac = EVP_MD_size(e_md); | |
1982 | if (c->algorithm_enc != SSL_eNULL) { | |
1983 | int cipher_nid = SSL_CIPHER_get_cipher_nid(c); | |
1984 | const EVP_CIPHER *e_ciph = EVP_get_cipherbynid(cipher_nid); | |
1985 | ||
1986 | /* If it wasn't AEAD or SSL_eNULL, we expect it to be a | |
1987 | known CBC cipher. */ | |
1988 | if (e_ciph == NULL || | |
1989 | EVP_CIPHER_mode(e_ciph) != EVP_CIPH_CBC_MODE) | |
1990 | return 0; | |
1991 | ||
1992 | in = 1; /* padding length byte */ | |
1993 | out = EVP_CIPHER_iv_length(e_ciph); | |
1994 | blk = EVP_CIPHER_block_size(e_ciph); | |
1995 | } | |
1996 | } | |
1997 | ||
1998 | *mac_overhead = mac; | |
1999 | *int_overhead = in; | |
2000 | *blocksize = blk; | |
2001 | *ext_overhead = out; | |
2002 | ||
2003 | return 1; | |
2004 | } | |
c04cd728 DSH |
2005 | |
2006 | int ssl_cert_is_disabled(size_t idx) | |
2007 | { | |
2008 | const SSL_CERT_LOOKUP *cl = ssl_cert_lookup_by_idx(idx); | |
2009 | ||
2010 | if (cl == NULL || (cl->amask & disabled_auth_mask) != 0) | |
2011 | return 1; | |
2012 | return 0; | |
2013 | } |