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846e33c7 | 1 | /* |
98278b96 | 2 | * Copyright 1995-2020 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 | * |
2c18d164 | 6 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
846e33c7 RS |
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> |
a53b5be6 | 18 | #include <openssl/conf.h> |
77359d22 | 19 | #include <openssl/trace.h> |
677963e5 | 20 | #include "internal/nelem.h" |
706457b7 | 21 | #include "ssl_local.h" |
c2e4e5d2 | 22 | #include "internal/thread_once.h" |
67dc995e | 23 | #include "internal/cryptlib.h" |
d02b48c6 | 24 | |
852c2ed2 RS |
25 | DEFINE_STACK_OF(SSL_COMP) |
26 | DEFINE_STACK_OF_CONST(SSL_CIPHER) | |
27 | ||
98c9ce2f DSH |
28 | /* NB: make sure indices in these tables match values above */ |
29 | ||
30 | typedef struct { | |
90d9e49a | 31 | uint32_t mask; |
98c9ce2f DSH |
32 | int nid; |
33 | } ssl_cipher_table; | |
34 | ||
35 | /* Table of NIDs for each cipher */ | |
36 | static const ssl_cipher_table ssl_cipher_table_cipher[SSL_ENC_NUM_IDX] = { | |
37 | {SSL_DES, NID_des_cbc}, /* SSL_ENC_DES_IDX 0 */ | |
38 | {SSL_3DES, NID_des_ede3_cbc}, /* SSL_ENC_3DES_IDX 1 */ | |
39 | {SSL_RC4, NID_rc4}, /* SSL_ENC_RC4_IDX 2 */ | |
40 | {SSL_RC2, NID_rc2_cbc}, /* SSL_ENC_RC2_IDX 3 */ | |
41 | {SSL_IDEA, NID_idea_cbc}, /* SSL_ENC_IDEA_IDX 4 */ | |
42 | {SSL_eNULL, NID_undef}, /* SSL_ENC_NULL_IDX 5 */ | |
43 | {SSL_AES128, NID_aes_128_cbc}, /* SSL_ENC_AES128_IDX 6 */ | |
44 | {SSL_AES256, NID_aes_256_cbc}, /* SSL_ENC_AES256_IDX 7 */ | |
45 | {SSL_CAMELLIA128, NID_camellia_128_cbc}, /* SSL_ENC_CAMELLIA128_IDX 8 */ | |
46 | {SSL_CAMELLIA256, NID_camellia_256_cbc}, /* SSL_ENC_CAMELLIA256_IDX 9 */ | |
47 | {SSL_eGOST2814789CNT, NID_gost89_cnt}, /* SSL_ENC_GOST89_IDX 10 */ | |
48 | {SSL_SEED, NID_seed_cbc}, /* SSL_ENC_SEED_IDX 11 */ | |
49 | {SSL_AES128GCM, NID_aes_128_gcm}, /* SSL_ENC_AES128GCM_IDX 12 */ | |
e75c5a79 DSH |
50 | {SSL_AES256GCM, NID_aes_256_gcm}, /* SSL_ENC_AES256GCM_IDX 13 */ |
51 | {SSL_AES128CCM, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM_IDX 14 */ | |
3d3701ea DSH |
52 | {SSL_AES256CCM, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM_IDX 15 */ |
53 | {SSL_AES128CCM8, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM8_IDX 16 */ | |
e44380a9 | 54 | {SSL_AES256CCM8, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM8_IDX 17 */ |
bc326738 JS |
55 | {SSL_eGOST2814789CNT12, NID_gost89_cnt_12}, /* SSL_ENC_GOST8912_IDX 18 */ |
56 | {SSL_CHACHA20POLY1305, NID_chacha20_poly1305}, /* SSL_ENC_CHACHA_IDX 19 */ | |
57 | {SSL_ARIA128GCM, NID_aria_128_gcm}, /* SSL_ENC_ARIA128GCM_IDX 20 */ | |
58 | {SSL_ARIA256GCM, NID_aria_256_gcm}, /* SSL_ENC_ARIA256GCM_IDX 21 */ | |
98c9ce2f DSH |
59 | }; |
60 | ||
0f113f3e MC |
61 | #define SSL_COMP_NULL_IDX 0 |
62 | #define SSL_COMP_ZLIB_IDX 1 | |
63 | #define SSL_COMP_NUM_IDX 2 | |
64 | ||
65 | static STACK_OF(SSL_COMP) *ssl_comp_methods = NULL; | |
66 | ||
e4ad0763 | 67 | #ifndef OPENSSL_NO_COMP |
16203f7b | 68 | static CRYPTO_ONCE ssl_load_builtin_comp_once = CRYPTO_ONCE_STATIC_INIT; |
e4ad0763 | 69 | #endif |
16203f7b | 70 | |
98c9ce2f DSH |
71 | /* NB: make sure indices in this table matches values above */ |
72 | static const ssl_cipher_table ssl_cipher_table_mac[SSL_MD_NUM_IDX] = { | |
73 | {SSL_MD5, NID_md5}, /* SSL_MD_MD5_IDX 0 */ | |
74 | {SSL_SHA1, NID_sha1}, /* SSL_MD_SHA1_IDX 1 */ | |
75 | {SSL_GOST94, NID_id_GostR3411_94}, /* SSL_MD_GOST94_IDX 2 */ | |
76 | {SSL_GOST89MAC, NID_id_Gost28147_89_MAC}, /* SSL_MD_GOST89MAC_IDX 3 */ | |
77 | {SSL_SHA256, NID_sha256}, /* SSL_MD_SHA256_IDX 4 */ | |
e44380a9 | 78 | {SSL_SHA384, NID_sha384}, /* SSL_MD_SHA384_IDX 5 */ |
a230b26e EK |
79 | {SSL_GOST12_256, NID_id_GostR3411_2012_256}, /* SSL_MD_GOST12_256_IDX 6 */ |
80 | {SSL_GOST89MAC12, NID_gost_mac_12}, /* SSL_MD_GOST89MAC12_IDX 7 */ | |
81 | {SSL_GOST12_512, NID_id_GostR3411_2012_512}, /* SSL_MD_GOST12_512_IDX 8 */ | |
7afd2312 DSH |
82 | {0, NID_md5_sha1}, /* SSL_MD_MD5_SHA1_IDX 9 */ |
83 | {0, NID_sha224}, /* SSL_MD_SHA224_IDX 10 */ | |
84 | {0, NID_sha512} /* SSL_MD_SHA512_IDX 11 */ | |
98c9ce2f DSH |
85 | }; |
86 | ||
a230b26e | 87 | /* *INDENT-OFF* */ |
3ec13237 | 88 | static const ssl_cipher_table ssl_cipher_table_kx[] = { |
a230b26e EK |
89 | {SSL_kRSA, NID_kx_rsa}, |
90 | {SSL_kECDHE, NID_kx_ecdhe}, | |
91 | {SSL_kDHE, NID_kx_dhe}, | |
92 | {SSL_kECDHEPSK, NID_kx_ecdhe_psk}, | |
93 | {SSL_kDHEPSK, NID_kx_dhe_psk}, | |
94 | {SSL_kRSAPSK, NID_kx_rsa_psk}, | |
95 | {SSL_kPSK, NID_kx_psk}, | |
96 | {SSL_kSRP, NID_kx_srp}, | |
7114af30 DSH |
97 | {SSL_kGOST, NID_kx_gost}, |
98 | {SSL_kANY, NID_kx_any} | |
3ec13237 TS |
99 | }; |
100 | ||
101 | static const ssl_cipher_table ssl_cipher_table_auth[] = { | |
a230b26e EK |
102 | {SSL_aRSA, NID_auth_rsa}, |
103 | {SSL_aECDSA, NID_auth_ecdsa}, | |
104 | {SSL_aPSK, NID_auth_psk}, | |
105 | {SSL_aDSS, NID_auth_dss}, | |
106 | {SSL_aGOST01, NID_auth_gost01}, | |
107 | {SSL_aGOST12, NID_auth_gost12}, | |
108 | {SSL_aSRP, NID_auth_srp}, | |
7114af30 DSH |
109 | {SSL_aNULL, NID_auth_null}, |
110 | {SSL_aANY, NID_auth_any} | |
3ec13237 | 111 | }; |
a230b26e | 112 | /* *INDENT-ON* */ |
3ec13237 | 113 | |
98c9ce2f DSH |
114 | /* Utility function for table lookup */ |
115 | static int ssl_cipher_info_find(const ssl_cipher_table * table, | |
90d9e49a | 116 | size_t table_cnt, uint32_t mask) |
98c9ce2f DSH |
117 | { |
118 | size_t i; | |
119 | for (i = 0; i < table_cnt; i++, table++) { | |
120 | if (table->mask == mask) | |
348240c6 | 121 | return (int)i; |
98c9ce2f DSH |
122 | } |
123 | return -1; | |
124 | } | |
125 | ||
126 | #define ssl_cipher_info_lookup(table, x) \ | |
b6eb9827 | 127 | ssl_cipher_info_find(table, OSSL_NELEM(table), x) |
98c9ce2f | 128 | |
0f113f3e MC |
129 | /* |
130 | * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation | |
131 | * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is | |
132 | * found | |
133 | */ | |
134 | static int ssl_mac_pkey_id[SSL_MD_NUM_IDX] = { | |
e44380a9 | 135 | /* MD5, SHA, GOST94, MAC89 */ |
0f113f3e | 136 | EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef, |
e44380a9 DB |
137 | /* SHA256, SHA384, GOST2012_256, MAC89-12 */ |
138 | EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef, | |
139 | /* GOST2012_512 */ | |
140 | EVP_PKEY_HMAC, | |
7fe0ed75 MC |
141 | /* MD5/SHA1, SHA224, SHA512 */ |
142 | NID_undef, NID_undef, NID_undef | |
0f113f3e MC |
143 | }; |
144 | ||
0f113f3e MC |
145 | #define CIPHER_ADD 1 |
146 | #define CIPHER_KILL 2 | |
147 | #define CIPHER_DEL 3 | |
148 | #define CIPHER_ORD 4 | |
149 | #define CIPHER_SPECIAL 5 | |
a556f342 EK |
150 | /* |
151 | * Bump the ciphers to the top of the list. | |
152 | * This rule isn't currently supported by the public cipherstring API. | |
153 | */ | |
154 | #define CIPHER_BUMP 6 | |
0f113f3e MC |
155 | |
156 | typedef struct cipher_order_st { | |
157 | const SSL_CIPHER *cipher; | |
158 | int active; | |
159 | int dead; | |
160 | struct cipher_order_st *next, *prev; | |
161 | } CIPHER_ORDER; | |
162 | ||
163 | static const SSL_CIPHER cipher_aliases[] = { | |
164 | /* "ALL" doesn't include eNULL (must be specifically enabled) */ | |
bbb4ceb8 | 165 | {0, SSL_TXT_ALL, NULL, 0, 0, 0, ~SSL_eNULL}, |
0f113f3e | 166 | /* "COMPLEMENTOFALL" */ |
bbb4ceb8 | 167 | {0, SSL_TXT_CMPALL, NULL, 0, 0, 0, SSL_eNULL}, |
0f113f3e MC |
168 | |
169 | /* | |
170 | * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in | |
171 | * ALL!) | |
172 | */ | |
bbb4ceb8 | 173 | {0, SSL_TXT_CMPDEF, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_NOT_DEFAULT}, |
0f113f3e MC |
174 | |
175 | /* | |
176 | * key exchange aliases (some of those using only a single bit here | |
177 | * combine multiple key exchange algs according to the RFCs, e.g. kDHE | |
178 | * combines DHE_DSS and DHE_RSA) | |
179 | */ | |
bbb4ceb8 | 180 | {0, SSL_TXT_kRSA, NULL, 0, SSL_kRSA}, |
0f113f3e | 181 | |
bbb4ceb8 PY |
182 | {0, SSL_TXT_kEDH, NULL, 0, SSL_kDHE}, |
183 | {0, SSL_TXT_kDHE, NULL, 0, SSL_kDHE}, | |
184 | {0, SSL_TXT_DH, NULL, 0, SSL_kDHE}, | |
0f113f3e | 185 | |
bbb4ceb8 PY |
186 | {0, SSL_TXT_kEECDH, NULL, 0, SSL_kECDHE}, |
187 | {0, SSL_TXT_kECDHE, NULL, 0, SSL_kECDHE}, | |
188 | {0, SSL_TXT_ECDH, NULL, 0, SSL_kECDHE}, | |
0f113f3e | 189 | |
bbb4ceb8 PY |
190 | {0, SSL_TXT_kPSK, NULL, 0, SSL_kPSK}, |
191 | {0, SSL_TXT_kRSAPSK, NULL, 0, SSL_kRSAPSK}, | |
192 | {0, SSL_TXT_kECDHEPSK, NULL, 0, SSL_kECDHEPSK}, | |
193 | {0, SSL_TXT_kDHEPSK, NULL, 0, SSL_kDHEPSK}, | |
194 | {0, SSL_TXT_kSRP, NULL, 0, SSL_kSRP}, | |
195 | {0, SSL_TXT_kGOST, NULL, 0, SSL_kGOST}, | |
0f113f3e MC |
196 | |
197 | /* server authentication aliases */ | |
bbb4ceb8 PY |
198 | {0, SSL_TXT_aRSA, NULL, 0, 0, SSL_aRSA}, |
199 | {0, SSL_TXT_aDSS, NULL, 0, 0, SSL_aDSS}, | |
200 | {0, SSL_TXT_DSS, NULL, 0, 0, SSL_aDSS}, | |
201 | {0, SSL_TXT_aNULL, NULL, 0, 0, SSL_aNULL}, | |
202 | {0, SSL_TXT_aECDSA, NULL, 0, 0, SSL_aECDSA}, | |
203 | {0, SSL_TXT_ECDSA, NULL, 0, 0, SSL_aECDSA}, | |
204 | {0, SSL_TXT_aPSK, NULL, 0, 0, SSL_aPSK}, | |
205 | {0, SSL_TXT_aGOST01, NULL, 0, 0, SSL_aGOST01}, | |
206 | {0, SSL_TXT_aGOST12, NULL, 0, 0, SSL_aGOST12}, | |
207 | {0, SSL_TXT_aGOST, NULL, 0, 0, SSL_aGOST01 | SSL_aGOST12}, | |
208 | {0, SSL_TXT_aSRP, NULL, 0, 0, SSL_aSRP}, | |
0f113f3e MC |
209 | |
210 | /* aliases combining key exchange and server authentication */ | |
bbb4ceb8 PY |
211 | {0, SSL_TXT_EDH, NULL, 0, SSL_kDHE, ~SSL_aNULL}, |
212 | {0, SSL_TXT_DHE, NULL, 0, SSL_kDHE, ~SSL_aNULL}, | |
213 | {0, SSL_TXT_EECDH, NULL, 0, SSL_kECDHE, ~SSL_aNULL}, | |
214 | {0, SSL_TXT_ECDHE, NULL, 0, SSL_kECDHE, ~SSL_aNULL}, | |
215 | {0, SSL_TXT_NULL, NULL, 0, 0, 0, SSL_eNULL}, | |
216 | {0, SSL_TXT_RSA, NULL, 0, SSL_kRSA, SSL_aRSA}, | |
217 | {0, SSL_TXT_ADH, NULL, 0, SSL_kDHE, SSL_aNULL}, | |
218 | {0, SSL_TXT_AECDH, NULL, 0, SSL_kECDHE, SSL_aNULL}, | |
219 | {0, SSL_TXT_PSK, NULL, 0, SSL_PSK}, | |
220 | {0, SSL_TXT_SRP, NULL, 0, SSL_kSRP}, | |
0f113f3e MC |
221 | |
222 | /* symmetric encryption aliases */ | |
bbb4ceb8 PY |
223 | {0, SSL_TXT_3DES, NULL, 0, 0, 0, SSL_3DES}, |
224 | {0, SSL_TXT_RC4, NULL, 0, 0, 0, SSL_RC4}, | |
225 | {0, SSL_TXT_RC2, NULL, 0, 0, 0, SSL_RC2}, | |
226 | {0, SSL_TXT_IDEA, NULL, 0, 0, 0, SSL_IDEA}, | |
227 | {0, SSL_TXT_SEED, NULL, 0, 0, 0, SSL_SEED}, | |
228 | {0, SSL_TXT_eNULL, NULL, 0, 0, 0, SSL_eNULL}, | |
229 | {0, SSL_TXT_GOST, NULL, 0, 0, 0, SSL_eGOST2814789CNT | SSL_eGOST2814789CNT12}, | |
230 | {0, SSL_TXT_AES128, NULL, 0, 0, 0, | |
e5f969a8 | 231 | SSL_AES128 | SSL_AES128GCM | SSL_AES128CCM | SSL_AES128CCM8}, |
bbb4ceb8 | 232 | {0, SSL_TXT_AES256, NULL, 0, 0, 0, |
e5f969a8 | 233 | SSL_AES256 | SSL_AES256GCM | SSL_AES256CCM | SSL_AES256CCM8}, |
bbb4ceb8 PY |
234 | {0, SSL_TXT_AES, NULL, 0, 0, 0, SSL_AES}, |
235 | {0, SSL_TXT_AES_GCM, NULL, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM}, | |
236 | {0, SSL_TXT_AES_CCM, NULL, 0, 0, 0, | |
e5f969a8 | 237 | SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8}, |
bbb4ceb8 PY |
238 | {0, SSL_TXT_AES_CCM_8, NULL, 0, 0, 0, SSL_AES128CCM8 | SSL_AES256CCM8}, |
239 | {0, SSL_TXT_CAMELLIA128, NULL, 0, 0, 0, SSL_CAMELLIA128}, | |
240 | {0, SSL_TXT_CAMELLIA256, NULL, 0, 0, 0, SSL_CAMELLIA256}, | |
241 | {0, SSL_TXT_CAMELLIA, NULL, 0, 0, 0, SSL_CAMELLIA}, | |
242 | {0, SSL_TXT_CHACHA20, NULL, 0, 0, 0, SSL_CHACHA20}, | |
98278b96 | 243 | {0, SSL_TXT_GOST2012_GOST8912_GOST8912, NULL, 0, 0, 0, SSL_eGOST2814789CNT12}, |
0f113f3e | 244 | |
ea78d1ec | 245 | {0, SSL_TXT_ARIA, NULL, 0, 0, 0, SSL_ARIA}, |
bc326738 JS |
246 | {0, SSL_TXT_ARIA_GCM, NULL, 0, 0, 0, SSL_ARIA128GCM | SSL_ARIA256GCM}, |
247 | {0, SSL_TXT_ARIA128, NULL, 0, 0, 0, SSL_ARIA128GCM}, | |
248 | {0, SSL_TXT_ARIA256, NULL, 0, 0, 0, SSL_ARIA256GCM}, | |
249 | ||
0f113f3e | 250 | /* MAC aliases */ |
bbb4ceb8 PY |
251 | {0, SSL_TXT_MD5, NULL, 0, 0, 0, 0, SSL_MD5}, |
252 | {0, SSL_TXT_SHA1, NULL, 0, 0, 0, 0, SSL_SHA1}, | |
253 | {0, SSL_TXT_SHA, NULL, 0, 0, 0, 0, SSL_SHA1}, | |
254 | {0, SSL_TXT_GOST94, NULL, 0, 0, 0, 0, SSL_GOST94}, | |
255 | {0, SSL_TXT_GOST89MAC, NULL, 0, 0, 0, 0, SSL_GOST89MAC | SSL_GOST89MAC12}, | |
256 | {0, SSL_TXT_SHA256, NULL, 0, 0, 0, 0, SSL_SHA256}, | |
257 | {0, SSL_TXT_SHA384, NULL, 0, 0, 0, 0, SSL_SHA384}, | |
258 | {0, SSL_TXT_GOST12, NULL, 0, 0, 0, 0, SSL_GOST12_256}, | |
0f113f3e MC |
259 | |
260 | /* protocol version aliases */ | |
bbb4ceb8 PY |
261 | {0, SSL_TXT_SSLV3, NULL, 0, 0, 0, 0, 0, SSL3_VERSION}, |
262 | {0, SSL_TXT_TLSV1, NULL, 0, 0, 0, 0, 0, TLS1_VERSION}, | |
263 | {0, "TLSv1.0", NULL, 0, 0, 0, 0, 0, TLS1_VERSION}, | |
264 | {0, SSL_TXT_TLSV1_2, NULL, 0, 0, 0, 0, 0, TLS1_2_VERSION}, | |
0f113f3e | 265 | |
0f113f3e | 266 | /* strength classes */ |
bbb4ceb8 PY |
267 | {0, SSL_TXT_LOW, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_LOW}, |
268 | {0, SSL_TXT_MEDIUM, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_MEDIUM}, | |
269 | {0, SSL_TXT_HIGH, NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_HIGH}, | |
0f113f3e | 270 | /* FIPS 140-2 approved ciphersuite */ |
bbb4ceb8 | 271 | {0, SSL_TXT_FIPS, NULL, 0, 0, 0, ~SSL_eNULL, 0, 0, 0, 0, 0, SSL_FIPS}, |
0f113f3e MC |
272 | |
273 | /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */ | |
bbb4ceb8 | 274 | {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA, NULL, 0, |
e5f969a8 | 275 | SSL_kDHE, SSL_aDSS, SSL_3DES, SSL_SHA1, 0, 0, 0, 0, SSL_HIGH | SSL_FIPS}, |
bbb4ceb8 | 276 | {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA, NULL, 0, |
e5f969a8 | 277 | SSL_kDHE, SSL_aRSA, SSL_3DES, SSL_SHA1, 0, 0, 0, 0, SSL_HIGH | SSL_FIPS}, |
0f113f3e MC |
278 | |
279 | }; | |
280 | ||
281 | /* | |
282 | * Search for public key algorithm with given name and return its pkey_id if | |
283 | * it is available. Otherwise return 0 | |
81025661 | 284 | */ |
70531c14 DSH |
285 | #ifdef OPENSSL_NO_ENGINE |
286 | ||
81025661 | 287 | static int get_optional_pkey_id(const char *pkey_name) |
0f113f3e MC |
288 | { |
289 | const EVP_PKEY_ASN1_METHOD *ameth; | |
290 | int pkey_id = 0; | |
291 | ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1); | |
5f3d93e4 | 292 | if (ameth && EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, |
bbb4ceb8 | 293 | ameth) > 0) |
5f3d93e4 | 294 | return pkey_id; |
5f3d93e4 | 295 | return 0; |
0f113f3e | 296 | } |
d02b48c6 | 297 | |
70531c14 DSH |
298 | #else |
299 | ||
300 | static int get_optional_pkey_id(const char *pkey_name) | |
0f113f3e MC |
301 | { |
302 | const EVP_PKEY_ASN1_METHOD *ameth; | |
303 | ENGINE *tmpeng = NULL; | |
304 | int pkey_id = 0; | |
305 | ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1); | |
306 | if (ameth) { | |
5f3d93e4 MC |
307 | if (EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, |
308 | ameth) <= 0) | |
309 | pkey_id = 0; | |
0f113f3e | 310 | } |
7c96dbcd | 311 | ENGINE_finish(tmpeng); |
0f113f3e MC |
312 | return pkey_id; |
313 | } | |
70531c14 DSH |
314 | |
315 | #endif | |
316 | ||
633d49c7 | 317 | /* masks of disabled algorithms */ |
90d9e49a DSH |
318 | static uint32_t disabled_enc_mask; |
319 | static uint32_t disabled_mac_mask; | |
320 | static uint32_t disabled_mkey_mask; | |
321 | static uint32_t disabled_auth_mask; | |
633d49c7 | 322 | |
c8f6c28a | 323 | int ssl_load_ciphers(SSL_CTX *ctx) |
0f113f3e | 324 | { |
98c9ce2f DSH |
325 | size_t i; |
326 | const ssl_cipher_table *t; | |
748f2546 | 327 | |
633d49c7 | 328 | disabled_enc_mask = 0; |
98c9ce2f | 329 | for (i = 0, t = ssl_cipher_table_cipher; i < SSL_ENC_NUM_IDX; i++, t++) { |
c8f6c28a MC |
330 | if (t->nid != NID_undef) { |
331 | const EVP_CIPHER *cipher | |
332 | = ssl_evp_cipher_fetch(ctx->libctx, t->nid, ctx->propq); | |
333 | ||
334 | ctx->ssl_cipher_methods[i] = cipher; | |
633d49c7 DSH |
335 | if (cipher == NULL) |
336 | disabled_enc_mask |= t->mask; | |
337 | } | |
0f113f3e | 338 | } |
633d49c7 | 339 | disabled_mac_mask = 0; |
98c9ce2f | 340 | for (i = 0, t = ssl_cipher_table_mac; i < SSL_MD_NUM_IDX; i++, t++) { |
c8f6c28a MC |
341 | const EVP_MD *md |
342 | = ssl_evp_md_fetch(ctx->libctx, t->nid, ctx->propq); | |
343 | ||
344 | ctx->ssl_digest_methods[i] = md; | |
633d49c7 DSH |
345 | if (md == NULL) { |
346 | disabled_mac_mask |= t->mask; | |
347 | } else { | |
8c1a5343 | 348 | int tmpsize = EVP_MD_size(md); |
380a522f MC |
349 | if (!ossl_assert(tmpsize >= 0)) |
350 | return 0; | |
c8f6c28a | 351 | ctx->ssl_mac_secret_size[i] = tmpsize; |
98c9ce2f DSH |
352 | } |
353 | } | |
633d49c7 DSH |
354 | |
355 | disabled_mkey_mask = 0; | |
356 | disabled_auth_mask = 0; | |
357 | ||
358 | #ifdef OPENSSL_NO_RSA | |
332a251f | 359 | disabled_mkey_mask |= SSL_kRSA | SSL_kRSAPSK; |
633d49c7 DSH |
360 | disabled_auth_mask |= SSL_aRSA; |
361 | #endif | |
362 | #ifdef OPENSSL_NO_DSA | |
363 | disabled_auth_mask |= SSL_aDSS; | |
364 | #endif | |
365 | #ifdef OPENSSL_NO_DH | |
bc71f910 | 366 | disabled_mkey_mask |= SSL_kDHE | SSL_kDHEPSK; |
633d49c7 DSH |
367 | #endif |
368 | #ifdef OPENSSL_NO_EC | |
8175af50 | 369 | disabled_mkey_mask |= SSL_kECDHE | SSL_kECDHEPSK; |
ce0c1f2b | 370 | disabled_auth_mask |= SSL_aECDSA; |
633d49c7 DSH |
371 | #endif |
372 | #ifdef OPENSSL_NO_PSK | |
332a251f | 373 | disabled_mkey_mask |= SSL_PSK; |
633d49c7 DSH |
374 | disabled_auth_mask |= SSL_aPSK; |
375 | #endif | |
376 | #ifdef OPENSSL_NO_SRP | |
377 | disabled_mkey_mask |= SSL_kSRP; | |
378 | #endif | |
379 | ||
380 | /* | |
381 | * Check for presence of GOST 34.10 algorithms, and if they are not | |
382 | * present, disable appropriate auth and key exchange | |
383 | */ | |
e1fa652d | 384 | ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); |
bbb4ceb8 | 385 | if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) |
c8f6c28a | 386 | ctx->ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32; |
bbb4ceb8 | 387 | else |
633d49c7 | 388 | disabled_mac_mask |= SSL_GOST89MAC; |
633d49c7 | 389 | |
a230b26e EK |
390 | ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX] = |
391 | get_optional_pkey_id("gost-mac-12"); | |
bbb4ceb8 | 392 | if (ssl_mac_pkey_id[SSL_MD_GOST89MAC12_IDX]) |
c8f6c28a | 393 | ctx->ssl_mac_secret_size[SSL_MD_GOST89MAC12_IDX] = 32; |
bbb4ceb8 | 394 | else |
e44380a9 | 395 | disabled_mac_mask |= SSL_GOST89MAC12; |
e44380a9 | 396 | |
633d49c7 | 397 | if (!get_optional_pkey_id("gost2001")) |
e44380a9 DB |
398 | disabled_auth_mask |= SSL_aGOST01 | SSL_aGOST12; |
399 | if (!get_optional_pkey_id("gost2012_256")) | |
400 | disabled_auth_mask |= SSL_aGOST12; | |
401 | if (!get_optional_pkey_id("gost2012_512")) | |
402 | disabled_auth_mask |= SSL_aGOST12; | |
633d49c7 DSH |
403 | /* |
404 | * Disable GOST key exchange if no GOST signature algs are available * | |
405 | */ | |
a230b26e EK |
406 | if ((disabled_auth_mask & (SSL_aGOST01 | SSL_aGOST12)) == |
407 | (SSL_aGOST01 | SSL_aGOST12)) | |
633d49c7 | 408 | disabled_mkey_mask |= SSL_kGOST; |
380a522f MC |
409 | |
410 | return 1; | |
0f113f3e MC |
411 | } |
412 | ||
09b6c2ef DSH |
413 | #ifndef OPENSSL_NO_COMP |
414 | ||
0f113f3e MC |
415 | static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b) |
416 | { | |
417 | return ((*a)->id - (*b)->id); | |
418 | } | |
7ba666fa | 419 | |
c2e4e5d2 | 420 | DEFINE_RUN_ONCE_STATIC(do_load_builtin_compressions) |
0f113f3e | 421 | { |
16203f7b AG |
422 | SSL_COMP *comp = NULL; |
423 | COMP_METHOD *method = COMP_zlib(); | |
424 | ||
16203f7b AG |
425 | ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp); |
426 | ||
427 | if (COMP_get_type(method) != NID_undef && ssl_comp_methods != NULL) { | |
428 | comp = OPENSSL_malloc(sizeof(*comp)); | |
429 | if (comp != NULL) { | |
430 | comp->method = method; | |
431 | comp->id = SSL_COMP_ZLIB_IDX; | |
432 | comp->name = COMP_get_name(method); | |
433 | sk_SSL_COMP_push(ssl_comp_methods, comp); | |
434 | sk_SSL_COMP_sort(ssl_comp_methods); | |
0f113f3e MC |
435 | } |
436 | } | |
c2e4e5d2 | 437 | return 1; |
16203f7b | 438 | } |
0f113f3e | 439 | |
912c258f | 440 | static int load_builtin_compressions(void) |
16203f7b | 441 | { |
912c258f | 442 | return RUN_ONCE(&ssl_load_builtin_comp_once, do_load_builtin_compressions); |
0f113f3e | 443 | } |
09b6c2ef | 444 | #endif |
7ba666fa | 445 | |
9727f4e7 MC |
446 | int ssl_cipher_get_evp_cipher(SSL_CTX *ctx, const SSL_CIPHER *sslc, |
447 | const EVP_CIPHER **enc) | |
448 | { | |
449 | int i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, sslc->algorithm_enc); | |
450 | ||
451 | if (i == -1) { | |
452 | *enc = NULL; | |
453 | } else { | |
454 | if (i == SSL_ENC_NULL_IDX) { | |
455 | /* | |
456 | * We assume we don't care about this coming from an ENGINE so | |
457 | * just do a normal EVP_CIPHER_fetch instead of | |
458 | * ssl_evp_cipher_fetch() | |
459 | */ | |
460 | *enc = EVP_CIPHER_fetch(ctx->libctx, "NULL", ctx->propq); | |
461 | if (*enc == NULL) | |
462 | return 0; | |
463 | } else { | |
c2146b57 MC |
464 | const EVP_CIPHER *cipher = ctx->ssl_cipher_methods[i]; |
465 | ||
466 | if (cipher == NULL | |
467 | || !ssl_evp_cipher_up_ref(cipher)) | |
9727f4e7 MC |
468 | return 0; |
469 | *enc = ctx->ssl_cipher_methods[i]; | |
470 | } | |
471 | } | |
472 | return 1; | |
473 | } | |
474 | ||
c8f6c28a MC |
475 | int ssl_cipher_get_evp(SSL_CTX *ctx, const SSL_SESSION *s, |
476 | const EVP_CIPHER **enc, const EVP_MD **md, | |
477 | int *mac_pkey_type, size_t *mac_secret_size, | |
478 | SSL_COMP **comp, int use_etm) | |
0f113f3e MC |
479 | { |
480 | int i; | |
481 | const SSL_CIPHER *c; | |
482 | ||
483 | c = s->cipher; | |
484 | if (c == NULL) | |
bbb4ceb8 | 485 | return 0; |
0f113f3e MC |
486 | if (comp != NULL) { |
487 | SSL_COMP ctmp; | |
09b6c2ef | 488 | #ifndef OPENSSL_NO_COMP |
912c258f RL |
489 | if (!load_builtin_compressions()) { |
490 | /* | |
491 | * Currently don't care, since a failure only means that | |
492 | * ssl_comp_methods is NULL, which is perfectly OK | |
493 | */ | |
494 | } | |
09b6c2ef | 495 | #endif |
0f113f3e MC |
496 | *comp = NULL; |
497 | ctmp.id = s->compress_meth; | |
498 | if (ssl_comp_methods != NULL) { | |
499 | i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp); | |
5b37fef0 | 500 | *comp = sk_SSL_COMP_value(ssl_comp_methods, i); |
0f113f3e | 501 | } |
69f68237 | 502 | /* If were only interested in comp then return success */ |
61986d32 | 503 | if ((enc == NULL) && (md == NULL)) |
69f68237 | 504 | return 1; |
0f113f3e MC |
505 | } |
506 | ||
507 | if ((enc == NULL) || (md == NULL)) | |
69f68237 | 508 | return 0; |
0f113f3e | 509 | |
9727f4e7 MC |
510 | if (!ssl_cipher_get_evp_cipher(ctx, c, enc)) |
511 | return 0; | |
0f113f3e | 512 | |
98c9ce2f DSH |
513 | i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac); |
514 | if (i == -1) { | |
0f113f3e MC |
515 | *md = NULL; |
516 | if (mac_pkey_type != NULL) | |
517 | *mac_pkey_type = NID_undef; | |
518 | if (mac_secret_size != NULL) | |
519 | *mac_secret_size = 0; | |
520 | if (c->algorithm_mac == SSL_AEAD) | |
521 | mac_pkey_type = NULL; | |
522 | } else { | |
c8f6c28a MC |
523 | if (!ssl_evp_md_up_ref(ctx->ssl_digest_methods[i])) { |
524 | ssl_evp_cipher_free(*enc); | |
525 | return 0; | |
526 | } | |
527 | *md = ctx->ssl_digest_methods[i]; | |
0f113f3e MC |
528 | if (mac_pkey_type != NULL) |
529 | *mac_pkey_type = ssl_mac_pkey_id[i]; | |
530 | if (mac_secret_size != NULL) | |
c8f6c28a | 531 | *mac_secret_size = ctx->ssl_mac_secret_size[i]; |
0f113f3e MC |
532 | } |
533 | ||
534 | if ((*enc != NULL) && | |
535 | (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER)) | |
536 | && (!mac_pkey_type || *mac_pkey_type != NID_undef)) { | |
c8f6c28a | 537 | const EVP_CIPHER *evp = NULL; |
0f113f3e | 538 | |
c8f6c28a MC |
539 | if (use_etm |
540 | || s->ssl_version >> 8 != TLS1_VERSION_MAJOR | |
541 | || s->ssl_version < TLS1_VERSION) | |
0f113f3e MC |
542 | return 1; |
543 | ||
c8f6c28a MC |
544 | if (c->algorithm_enc == SSL_RC4 |
545 | && c->algorithm_mac == SSL_MD5) | |
546 | evp = ssl_evp_cipher_fetch(ctx->libctx, NID_rc4_hmac_md5, | |
547 | ctx->propq); | |
548 | else if (c->algorithm_enc == SSL_AES128 | |
549 | && c->algorithm_mac == SSL_SHA1) | |
550 | evp = ssl_evp_cipher_fetch(ctx->libctx, | |
551 | NID_aes_128_cbc_hmac_sha1, | |
552 | ctx->propq); | |
553 | else if (c->algorithm_enc == SSL_AES256 | |
554 | && c->algorithm_mac == SSL_SHA1) | |
555 | evp = ssl_evp_cipher_fetch(ctx->libctx, | |
556 | NID_aes_256_cbc_hmac_sha1, | |
557 | ctx->propq); | |
558 | else if (c->algorithm_enc == SSL_AES128 | |
559 | && c->algorithm_mac == SSL_SHA256) | |
560 | evp = ssl_evp_cipher_fetch(ctx->libctx, | |
561 | NID_aes_128_cbc_hmac_sha256, | |
562 | ctx->propq); | |
563 | else if (c->algorithm_enc == SSL_AES256 | |
564 | && c->algorithm_mac == SSL_SHA256) | |
565 | evp = ssl_evp_cipher_fetch(ctx->libctx, | |
566 | NID_aes_256_cbc_hmac_sha256, | |
567 | ctx->propq); | |
568 | ||
569 | if (evp != NULL) { | |
570 | ssl_evp_cipher_free(*enc); | |
571 | ssl_evp_md_free(*md); | |
572 | *enc = evp; | |
573 | *md = NULL; | |
574 | } | |
bbb4ceb8 | 575 | return 1; |
bbb4ceb8 | 576 | } |
c8f6c28a MC |
577 | |
578 | return 0; | |
0f113f3e MC |
579 | } |
580 | ||
c8f6c28a | 581 | const EVP_MD *ssl_md(SSL_CTX *ctx, int idx) |
81025661 | 582 | { |
28ba2541 DSH |
583 | idx &= SSL_HANDSHAKE_MAC_MASK; |
584 | if (idx < 0 || idx >= SSL_MD_NUM_IDX) | |
585 | return NULL; | |
c8f6c28a | 586 | return ctx->ssl_digest_methods[idx]; |
28ba2541 DSH |
587 | } |
588 | ||
589 | const EVP_MD *ssl_handshake_md(SSL *s) | |
590 | { | |
c8f6c28a | 591 | return ssl_md(s->ctx, ssl_get_algorithm2(s)); |
28ba2541 DSH |
592 | } |
593 | ||
594 | const EVP_MD *ssl_prf_md(SSL *s) | |
595 | { | |
c8f6c28a | 596 | return ssl_md(s->ctx, ssl_get_algorithm2(s) >> TLS1_PRF_DGST_SHIFT); |
81025661 DSH |
597 | } |
598 | ||
58964a49 | 599 | #define ITEM_SEP(a) \ |
0f113f3e | 600 | (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) |
58964a49 | 601 | |
6b691a5c | 602 | static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
0f113f3e MC |
603 | CIPHER_ORDER **tail) |
604 | { | |
605 | if (curr == *tail) | |
606 | return; | |
607 | if (curr == *head) | |
608 | *head = curr->next; | |
609 | if (curr->prev != NULL) | |
610 | curr->prev->next = curr->next; | |
611 | if (curr->next != NULL) | |
612 | curr->next->prev = curr->prev; | |
613 | (*tail)->next = curr; | |
614 | curr->prev = *tail; | |
615 | curr->next = NULL; | |
616 | *tail = curr; | |
617 | } | |
58964a49 | 618 | |
fd5bc65c | 619 | static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
0f113f3e MC |
620 | CIPHER_ORDER **tail) |
621 | { | |
622 | if (curr == *head) | |
623 | return; | |
624 | if (curr == *tail) | |
625 | *tail = curr->prev; | |
626 | if (curr->next != NULL) | |
627 | curr->next->prev = curr->prev; | |
628 | if (curr->prev != NULL) | |
629 | curr->prev->next = curr->next; | |
630 | (*head)->prev = curr; | |
631 | curr->next = *head; | |
632 | curr->prev = NULL; | |
633 | *head = curr; | |
634 | } | |
635 | ||
018e57c7 | 636 | static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, |
0f113f3e | 637 | int num_of_ciphers, |
90d9e49a DSH |
638 | uint32_t disabled_mkey, |
639 | uint32_t disabled_auth, | |
640 | uint32_t disabled_enc, | |
641 | uint32_t disabled_mac, | |
0f113f3e MC |
642 | CIPHER_ORDER *co_list, |
643 | CIPHER_ORDER **head_p, | |
644 | CIPHER_ORDER **tail_p) | |
645 | { | |
646 | int i, co_list_num; | |
647 | const SSL_CIPHER *c; | |
648 | ||
649 | /* | |
650 | * We have num_of_ciphers descriptions compiled in, depending on the | |
651 | * method selected (SSLv3, TLSv1 etc). | |
652 | * These will later be sorted in a linked list with at most num | |
653 | * entries. | |
654 | */ | |
655 | ||
656 | /* Get the initial list of ciphers */ | |
657 | co_list_num = 0; /* actual count of ciphers */ | |
658 | for (i = 0; i < num_of_ciphers; i++) { | |
659 | c = ssl_method->get_cipher(i); | |
660 | /* drop those that use any of that is not available */ | |
ca3895f0 KR |
661 | if (c == NULL || !c->valid) |
662 | continue; | |
ca3895f0 KR |
663 | if ((c->algorithm_mkey & disabled_mkey) || |
664 | (c->algorithm_auth & disabled_auth) || | |
665 | (c->algorithm_enc & disabled_enc) || | |
666 | (c->algorithm_mac & disabled_mac)) | |
667 | continue; | |
668 | if (((ssl_method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) == 0) && | |
669 | c->min_tls == 0) | |
670 | continue; | |
671 | if (((ssl_method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) != 0) && | |
672 | c->min_dtls == 0) | |
673 | continue; | |
674 | ||
675 | co_list[co_list_num].cipher = c; | |
676 | co_list[co_list_num].next = NULL; | |
677 | co_list[co_list_num].prev = NULL; | |
678 | co_list[co_list_num].active = 0; | |
679 | co_list_num++; | |
0f113f3e MC |
680 | } |
681 | ||
682 | /* | |
683 | * Prepare linked list from list entries | |
684 | */ | |
685 | if (co_list_num > 0) { | |
686 | co_list[0].prev = NULL; | |
687 | ||
688 | if (co_list_num > 1) { | |
689 | co_list[0].next = &co_list[1]; | |
690 | ||
691 | for (i = 1; i < co_list_num - 1; i++) { | |
692 | co_list[i].prev = &co_list[i - 1]; | |
693 | co_list[i].next = &co_list[i + 1]; | |
694 | } | |
695 | ||
696 | co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; | |
697 | } | |
698 | ||
699 | co_list[co_list_num - 1].next = NULL; | |
700 | ||
701 | *head_p = &co_list[0]; | |
702 | *tail_p = &co_list[co_list_num - 1]; | |
703 | } | |
704 | } | |
d02b48c6 | 705 | |
babb3798 | 706 | static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, |
0f113f3e | 707 | int num_of_group_aliases, |
90d9e49a DSH |
708 | uint32_t disabled_mkey, |
709 | uint32_t disabled_auth, | |
710 | uint32_t disabled_enc, | |
711 | uint32_t disabled_mac, | |
0f113f3e MC |
712 | CIPHER_ORDER *head) |
713 | { | |
714 | CIPHER_ORDER *ciph_curr; | |
715 | const SSL_CIPHER **ca_curr; | |
716 | int i; | |
90d9e49a DSH |
717 | uint32_t mask_mkey = ~disabled_mkey; |
718 | uint32_t mask_auth = ~disabled_auth; | |
719 | uint32_t mask_enc = ~disabled_enc; | |
720 | uint32_t mask_mac = ~disabled_mac; | |
0f113f3e MC |
721 | |
722 | /* | |
723 | * First, add the real ciphers as already collected | |
724 | */ | |
725 | ciph_curr = head; | |
726 | ca_curr = ca_list; | |
727 | while (ciph_curr != NULL) { | |
728 | *ca_curr = ciph_curr->cipher; | |
729 | ca_curr++; | |
730 | ciph_curr = ciph_curr->next; | |
731 | } | |
732 | ||
733 | /* | |
734 | * Now we add the available ones from the cipher_aliases[] table. | |
735 | * They represent either one or more algorithms, some of which | |
736 | * in any affected category must be supported (set in enabled_mask), | |
737 | * or represent a cipher strength value (will be added in any case because algorithms=0). | |
738 | */ | |
739 | for (i = 0; i < num_of_group_aliases; i++) { | |
90d9e49a DSH |
740 | uint32_t algorithm_mkey = cipher_aliases[i].algorithm_mkey; |
741 | uint32_t algorithm_auth = cipher_aliases[i].algorithm_auth; | |
742 | uint32_t algorithm_enc = cipher_aliases[i].algorithm_enc; | |
743 | uint32_t algorithm_mac = cipher_aliases[i].algorithm_mac; | |
0f113f3e MC |
744 | |
745 | if (algorithm_mkey) | |
746 | if ((algorithm_mkey & mask_mkey) == 0) | |
747 | continue; | |
748 | ||
749 | if (algorithm_auth) | |
750 | if ((algorithm_auth & mask_auth) == 0) | |
751 | continue; | |
752 | ||
753 | if (algorithm_enc) | |
754 | if ((algorithm_enc & mask_enc) == 0) | |
755 | continue; | |
756 | ||
757 | if (algorithm_mac) | |
758 | if ((algorithm_mac & mask_mac) == 0) | |
759 | continue; | |
760 | ||
0f113f3e MC |
761 | *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); |
762 | ca_curr++; | |
763 | } | |
764 | ||
765 | *ca_curr = NULL; /* end of list */ | |
766 | } | |
d02b48c6 | 767 | |
90d9e49a DSH |
768 | static void ssl_cipher_apply_rule(uint32_t cipher_id, uint32_t alg_mkey, |
769 | uint32_t alg_auth, uint32_t alg_enc, | |
3eb2aff4 | 770 | uint32_t alg_mac, int min_tls, |
90d9e49a DSH |
771 | uint32_t algo_strength, int rule, |
772 | int32_t strength_bits, CIPHER_ORDER **head_p, | |
0f113f3e MC |
773 | CIPHER_ORDER **tail_p) |
774 | { | |
775 | CIPHER_ORDER *head, *tail, *curr, *next, *last; | |
776 | const SSL_CIPHER *cp; | |
777 | int reverse = 0; | |
018e57c7 | 778 | |
77359d22 RL |
779 | OSSL_TRACE_BEGIN(TLS_CIPHER){ |
780 | BIO_printf(trc_out, | |
781 | "Applying rule %d with %08x/%08x/%08x/%08x/%08x %08x (%d)\n", | |
782 | rule, alg_mkey, alg_auth, alg_enc, alg_mac, min_tls, | |
783 | algo_strength, strength_bits); | |
784 | } | |
d02b48c6 | 785 | |
a556f342 | 786 | if (rule == CIPHER_DEL || rule == CIPHER_BUMP) |
a230b26e EK |
787 | reverse = 1; /* needed to maintain sorting between currently |
788 | * deleted ciphers */ | |
0f113f3e MC |
789 | |
790 | head = *head_p; | |
791 | tail = *tail_p; | |
792 | ||
793 | if (reverse) { | |
794 | next = tail; | |
795 | last = head; | |
796 | } else { | |
797 | next = head; | |
798 | last = tail; | |
799 | } | |
800 | ||
801 | curr = NULL; | |
802 | for (;;) { | |
803 | if (curr == last) | |
804 | break; | |
805 | ||
806 | curr = next; | |
807 | ||
808 | if (curr == NULL) | |
809 | break; | |
810 | ||
811 | next = reverse ? curr->prev : curr->next; | |
812 | ||
813 | cp = curr->cipher; | |
814 | ||
815 | /* | |
816 | * Selection criteria is either the value of strength_bits | |
817 | * or the algorithms used. | |
818 | */ | |
819 | if (strength_bits >= 0) { | |
820 | if (strength_bits != cp->strength_bits) | |
821 | continue; | |
822 | } else { | |
77359d22 RL |
823 | if (trc_out != NULL) { |
824 | BIO_printf(trc_out, | |
825 | "\nName: %s:" | |
826 | "\nAlgo = %08x/%08x/%08x/%08x/%08x Algo_strength = %08x\n", | |
827 | cp->name, cp->algorithm_mkey, cp->algorithm_auth, | |
828 | cp->algorithm_enc, cp->algorithm_mac, cp->min_tls, | |
829 | cp->algo_strength); | |
830 | } | |
0ced42e0 MC |
831 | if (cipher_id != 0 && (cipher_id != cp->id)) |
832 | continue; | |
0f113f3e MC |
833 | if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) |
834 | continue; | |
835 | if (alg_auth && !(alg_auth & cp->algorithm_auth)) | |
836 | continue; | |
837 | if (alg_enc && !(alg_enc & cp->algorithm_enc)) | |
838 | continue; | |
839 | if (alg_mac && !(alg_mac & cp->algorithm_mac)) | |
840 | continue; | |
3eb2aff4 | 841 | if (min_tls && (min_tls != cp->min_tls)) |
0f113f3e | 842 | continue; |
88a9614b KR |
843 | if ((algo_strength & SSL_STRONG_MASK) |
844 | && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) | |
0f113f3e | 845 | continue; |
c84f7f4a MC |
846 | if ((algo_strength & SSL_DEFAULT_MASK) |
847 | && !(algo_strength & SSL_DEFAULT_MASK & cp->algo_strength)) | |
848 | continue; | |
0f113f3e | 849 | } |
018e57c7 | 850 | |
77359d22 RL |
851 | if (trc_out != NULL) |
852 | BIO_printf(trc_out, "Action = %d\n", rule); | |
018e57c7 | 853 | |
0f113f3e MC |
854 | /* add the cipher if it has not been added yet. */ |
855 | if (rule == CIPHER_ADD) { | |
856 | /* reverse == 0 */ | |
857 | if (!curr->active) { | |
858 | ll_append_tail(&head, curr, &tail); | |
859 | curr->active = 1; | |
860 | } | |
861 | } | |
862 | /* Move the added cipher to this location */ | |
863 | else if (rule == CIPHER_ORD) { | |
864 | /* reverse == 0 */ | |
865 | if (curr->active) { | |
866 | ll_append_tail(&head, curr, &tail); | |
867 | } | |
868 | } else if (rule == CIPHER_DEL) { | |
869 | /* reverse == 1 */ | |
870 | if (curr->active) { | |
871 | /* | |
872 | * most recently deleted ciphersuites get best positions for | |
873 | * any future CIPHER_ADD (note that the CIPHER_DEL loop works | |
874 | * in reverse to maintain the order) | |
875 | */ | |
876 | ll_append_head(&head, curr, &tail); | |
877 | curr->active = 0; | |
878 | } | |
a556f342 EK |
879 | } else if (rule == CIPHER_BUMP) { |
880 | if (curr->active) | |
881 | ll_append_head(&head, curr, &tail); | |
0f113f3e MC |
882 | } else if (rule == CIPHER_KILL) { |
883 | /* reverse == 0 */ | |
884 | if (head == curr) | |
885 | head = curr->next; | |
886 | else | |
887 | curr->prev->next = curr->next; | |
888 | if (tail == curr) | |
889 | tail = curr->prev; | |
890 | curr->active = 0; | |
891 | if (curr->next != NULL) | |
892 | curr->next->prev = curr->prev; | |
893 | if (curr->prev != NULL) | |
894 | curr->prev->next = curr->next; | |
895 | curr->next = NULL; | |
896 | curr->prev = NULL; | |
897 | } | |
898 | } | |
899 | ||
900 | *head_p = head; | |
901 | *tail_p = tail; | |
77359d22 RL |
902 | |
903 | OSSL_TRACE_END(TLS_CIPHER); | |
0f113f3e | 904 | } |
018e57c7 | 905 | |
a717831d | 906 | static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, |
0f113f3e MC |
907 | CIPHER_ORDER **tail_p) |
908 | { | |
90d9e49a DSH |
909 | int32_t max_strength_bits; |
910 | int i, *number_uses; | |
0f113f3e MC |
911 | CIPHER_ORDER *curr; |
912 | ||
913 | /* | |
914 | * This routine sorts the ciphers with descending strength. The sorting | |
915 | * must keep the pre-sorted sequence, so we apply the normal sorting | |
916 | * routine as '+' movement to the end of the list. | |
917 | */ | |
918 | max_strength_bits = 0; | |
919 | curr = *head_p; | |
920 | while (curr != NULL) { | |
921 | if (curr->active && (curr->cipher->strength_bits > max_strength_bits)) | |
922 | max_strength_bits = curr->cipher->strength_bits; | |
923 | curr = curr->next; | |
924 | } | |
925 | ||
b51bce94 | 926 | number_uses = OPENSSL_zalloc(sizeof(int) * (max_strength_bits + 1)); |
a71edf3b | 927 | if (number_uses == NULL) { |
0f113f3e | 928 | SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE); |
bbb4ceb8 | 929 | return 0; |
0f113f3e | 930 | } |
0f113f3e MC |
931 | |
932 | /* | |
933 | * Now find the strength_bits values actually used | |
934 | */ | |
935 | curr = *head_p; | |
936 | while (curr != NULL) { | |
937 | if (curr->active) | |
938 | number_uses[curr->cipher->strength_bits]++; | |
939 | curr = curr->next; | |
940 | } | |
941 | /* | |
942 | * Go through the list of used strength_bits values in descending | |
943 | * order. | |
944 | */ | |
945 | for (i = max_strength_bits; i >= 0; i--) | |
946 | if (number_uses[i] > 0) | |
947 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, | |
948 | tail_p); | |
949 | ||
950 | OPENSSL_free(number_uses); | |
bbb4ceb8 | 951 | return 1; |
0f113f3e | 952 | } |
018e57c7 DSH |
953 | |
954 | static int ssl_cipher_process_rulestr(const char *rule_str, | |
0f113f3e MC |
955 | CIPHER_ORDER **head_p, |
956 | CIPHER_ORDER **tail_p, | |
957 | const SSL_CIPHER **ca_list, CERT *c) | |
958 | { | |
3eb2aff4 KR |
959 | uint32_t alg_mkey, alg_auth, alg_enc, alg_mac, algo_strength; |
960 | int min_tls; | |
0f113f3e MC |
961 | const char *l, *buf; |
962 | int j, multi, found, rule, retval, ok, buflen; | |
90d9e49a | 963 | uint32_t cipher_id = 0; |
0f113f3e MC |
964 | char ch; |
965 | ||
966 | retval = 1; | |
967 | l = rule_str; | |
bbb4ceb8 | 968 | for ( ; ; ) { |
0f113f3e MC |
969 | ch = *l; |
970 | ||
971 | if (ch == '\0') | |
972 | break; /* done */ | |
973 | if (ch == '-') { | |
974 | rule = CIPHER_DEL; | |
975 | l++; | |
976 | } else if (ch == '+') { | |
977 | rule = CIPHER_ORD; | |
978 | l++; | |
979 | } else if (ch == '!') { | |
980 | rule = CIPHER_KILL; | |
981 | l++; | |
982 | } else if (ch == '@') { | |
983 | rule = CIPHER_SPECIAL; | |
984 | l++; | |
985 | } else { | |
986 | rule = CIPHER_ADD; | |
987 | } | |
988 | ||
989 | if (ITEM_SEP(ch)) { | |
990 | l++; | |
991 | continue; | |
992 | } | |
993 | ||
994 | alg_mkey = 0; | |
995 | alg_auth = 0; | |
996 | alg_enc = 0; | |
997 | alg_mac = 0; | |
3eb2aff4 | 998 | min_tls = 0; |
0f113f3e MC |
999 | algo_strength = 0; |
1000 | ||
1001 | for (;;) { | |
1002 | ch = *l; | |
1003 | buf = l; | |
1004 | buflen = 0; | |
ca570cfd | 1005 | #ifndef CHARSET_EBCDIC |
0f113f3e MC |
1006 | while (((ch >= 'A') && (ch <= 'Z')) || |
1007 | ((ch >= '0') && (ch <= '9')) || | |
1008 | ((ch >= 'a') && (ch <= 'z')) || | |
1009 | (ch == '-') || (ch == '.') || (ch == '=')) | |
ca570cfd | 1010 | #else |
00dfbaad P |
1011 | while (isalnum((unsigned char)ch) || (ch == '-') || (ch == '.') |
1012 | || (ch == '=')) | |
ca570cfd | 1013 | #endif |
0f113f3e MC |
1014 | { |
1015 | ch = *(++l); | |
1016 | buflen++; | |
1017 | } | |
1018 | ||
1019 | if (buflen == 0) { | |
1020 | /* | |
1021 | * We hit something we cannot deal with, | |
1022 | * it is no command or separator nor | |
1023 | * alphanumeric, so we call this an error. | |
1024 | */ | |
a230b26e | 1025 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, SSL_R_INVALID_COMMAND); |
0f113f3e MC |
1026 | retval = found = 0; |
1027 | l++; | |
1028 | break; | |
1029 | } | |
1030 | ||
1031 | if (rule == CIPHER_SPECIAL) { | |
1032 | found = 0; /* unused -- avoid compiler warning */ | |
1033 | break; /* special treatment */ | |
1034 | } | |
1035 | ||
1036 | /* check for multi-part specification */ | |
1037 | if (ch == '+') { | |
1038 | multi = 1; | |
1039 | l++; | |
bbb4ceb8 | 1040 | } else { |
0f113f3e | 1041 | multi = 0; |
bbb4ceb8 | 1042 | } |
0f113f3e MC |
1043 | |
1044 | /* | |
1045 | * Now search for the cipher alias in the ca_list. Be careful | |
1046 | * with the strncmp, because the "buflen" limitation | |
1047 | * will make the rule "ADH:SOME" and the cipher | |
1048 | * "ADH-MY-CIPHER" look like a match for buflen=3. | |
1049 | * So additionally check whether the cipher name found | |
1050 | * has the correct length. We can save a strlen() call: | |
1051 | * just checking for the '\0' at the right place is | |
1052 | * sufficient, we have to strncmp() anyway. (We cannot | |
1053 | * use strcmp(), because buf is not '\0' terminated.) | |
1054 | */ | |
1055 | j = found = 0; | |
1056 | cipher_id = 0; | |
1057 | while (ca_list[j]) { | |
86885c28 RS |
1058 | if (strncmp(buf, ca_list[j]->name, buflen) == 0 |
1059 | && (ca_list[j]->name[buflen] == '\0')) { | |
0f113f3e MC |
1060 | found = 1; |
1061 | break; | |
1062 | } else | |
1063 | j++; | |
1064 | } | |
1065 | ||
1066 | if (!found) | |
1067 | break; /* ignore this entry */ | |
1068 | ||
1069 | if (ca_list[j]->algorithm_mkey) { | |
1070 | if (alg_mkey) { | |
1071 | alg_mkey &= ca_list[j]->algorithm_mkey; | |
1072 | if (!alg_mkey) { | |
1073 | found = 0; | |
1074 | break; | |
1075 | } | |
bbb4ceb8 | 1076 | } else { |
0f113f3e | 1077 | alg_mkey = ca_list[j]->algorithm_mkey; |
bbb4ceb8 | 1078 | } |
0f113f3e MC |
1079 | } |
1080 | ||
1081 | if (ca_list[j]->algorithm_auth) { | |
1082 | if (alg_auth) { | |
1083 | alg_auth &= ca_list[j]->algorithm_auth; | |
1084 | if (!alg_auth) { | |
1085 | found = 0; | |
1086 | break; | |
1087 | } | |
bbb4ceb8 | 1088 | } else { |
0f113f3e | 1089 | alg_auth = ca_list[j]->algorithm_auth; |
bbb4ceb8 | 1090 | } |
0f113f3e MC |
1091 | } |
1092 | ||
1093 | if (ca_list[j]->algorithm_enc) { | |
1094 | if (alg_enc) { | |
1095 | alg_enc &= ca_list[j]->algorithm_enc; | |
1096 | if (!alg_enc) { | |
1097 | found = 0; | |
1098 | break; | |
1099 | } | |
bbb4ceb8 | 1100 | } else { |
0f113f3e | 1101 | alg_enc = ca_list[j]->algorithm_enc; |
bbb4ceb8 | 1102 | } |
0f113f3e MC |
1103 | } |
1104 | ||
1105 | if (ca_list[j]->algorithm_mac) { | |
1106 | if (alg_mac) { | |
1107 | alg_mac &= ca_list[j]->algorithm_mac; | |
1108 | if (!alg_mac) { | |
1109 | found = 0; | |
1110 | break; | |
1111 | } | |
bbb4ceb8 | 1112 | } else { |
0f113f3e | 1113 | alg_mac = ca_list[j]->algorithm_mac; |
bbb4ceb8 | 1114 | } |
0f113f3e MC |
1115 | } |
1116 | ||
88a9614b KR |
1117 | if (ca_list[j]->algo_strength & SSL_STRONG_MASK) { |
1118 | if (algo_strength & SSL_STRONG_MASK) { | |
1119 | algo_strength &= | |
1120 | (ca_list[j]->algo_strength & SSL_STRONG_MASK) | | |
1121 | ~SSL_STRONG_MASK; | |
1122 | if (!(algo_strength & SSL_STRONG_MASK)) { | |
0f113f3e MC |
1123 | found = 0; |
1124 | break; | |
1125 | } | |
bbb4ceb8 | 1126 | } else { |
88a9614b | 1127 | algo_strength = ca_list[j]->algo_strength & SSL_STRONG_MASK; |
bbb4ceb8 | 1128 | } |
0f113f3e MC |
1129 | } |
1130 | ||
c84f7f4a MC |
1131 | if (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) { |
1132 | if (algo_strength & SSL_DEFAULT_MASK) { | |
1133 | algo_strength &= | |
1134 | (ca_list[j]->algo_strength & SSL_DEFAULT_MASK) | | |
1135 | ~SSL_DEFAULT_MASK; | |
1136 | if (!(algo_strength & SSL_DEFAULT_MASK)) { | |
1137 | found = 0; | |
1138 | break; | |
1139 | } | |
bbb4ceb8 | 1140 | } else { |
c84f7f4a MC |
1141 | algo_strength |= |
1142 | ca_list[j]->algo_strength & SSL_DEFAULT_MASK; | |
bbb4ceb8 | 1143 | } |
c84f7f4a MC |
1144 | } |
1145 | ||
0f113f3e MC |
1146 | if (ca_list[j]->valid) { |
1147 | /* | |
1148 | * explicit ciphersuite found; its protocol version does not | |
1149 | * become part of the search pattern! | |
1150 | */ | |
1151 | ||
1152 | cipher_id = ca_list[j]->id; | |
1153 | } else { | |
1154 | /* | |
1155 | * not an explicit ciphersuite; only in this case, the | |
1156 | * protocol version is considered part of the search pattern | |
1157 | */ | |
1158 | ||
3eb2aff4 KR |
1159 | if (ca_list[j]->min_tls) { |
1160 | if (min_tls != 0 && min_tls != ca_list[j]->min_tls) { | |
1161 | found = 0; | |
1162 | break; | |
1163 | } else { | |
1164 | min_tls = ca_list[j]->min_tls; | |
1165 | } | |
0f113f3e MC |
1166 | } |
1167 | } | |
1168 | ||
1169 | if (!multi) | |
1170 | break; | |
1171 | } | |
1172 | ||
1173 | /* | |
1174 | * Ok, we have the rule, now apply it | |
1175 | */ | |
1176 | if (rule == CIPHER_SPECIAL) { /* special command */ | |
1177 | ok = 0; | |
bbb4ceb8 | 1178 | if ((buflen == 8) && strncmp(buf, "STRENGTH", 8) == 0) { |
0f113f3e | 1179 | ok = ssl_cipher_strength_sort(head_p, tail_p); |
bbb4ceb8 | 1180 | } else if (buflen == 10 && strncmp(buf, "SECLEVEL=", 9) == 0) { |
0f113f3e MC |
1181 | int level = buf[9] - '0'; |
1182 | if (level < 0 || level > 5) { | |
1183 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, | |
1184 | SSL_R_INVALID_COMMAND); | |
1185 | } else { | |
1186 | c->sec_level = level; | |
1187 | ok = 1; | |
1188 | } | |
bbb4ceb8 | 1189 | } else { |
a230b26e | 1190 | SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, SSL_R_INVALID_COMMAND); |
bbb4ceb8 | 1191 | } |
0f113f3e MC |
1192 | if (ok == 0) |
1193 | retval = 0; | |
1194 | /* | |
1195 | * We do not support any "multi" options | |
1196 | * together with "@", so throw away the | |
1197 | * rest of the command, if any left, until | |
1198 | * end or ':' is found. | |
1199 | */ | |
1200 | while ((*l != '\0') && !ITEM_SEP(*l)) | |
1201 | l++; | |
1202 | } else if (found) { | |
1203 | ssl_cipher_apply_rule(cipher_id, | |
1204 | alg_mkey, alg_auth, alg_enc, alg_mac, | |
3eb2aff4 | 1205 | min_tls, algo_strength, rule, -1, head_p, |
0f113f3e MC |
1206 | tail_p); |
1207 | } else { | |
1208 | while ((*l != '\0') && !ITEM_SEP(*l)) | |
1209 | l++; | |
1210 | } | |
1211 | if (*l == '\0') | |
1212 | break; /* done */ | |
1213 | } | |
1214 | ||
bbb4ceb8 | 1215 | return retval; |
0f113f3e MC |
1216 | } |
1217 | ||
14536c8c | 1218 | #ifndef OPENSSL_NO_EC |
2ea80354 | 1219 | static int check_suiteb_cipher_list(const SSL_METHOD *meth, CERT *c, |
0f113f3e MC |
1220 | const char **prule_str) |
1221 | { | |
1222 | unsigned int suiteb_flags = 0, suiteb_comb2 = 0; | |
13e228d6 | 1223 | if (strncmp(*prule_str, "SUITEB128ONLY", 13) == 0) { |
0f113f3e | 1224 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS_ONLY; |
13e228d6 | 1225 | } else if (strncmp(*prule_str, "SUITEB128C2", 11) == 0) { |
0f113f3e MC |
1226 | suiteb_comb2 = 1; |
1227 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS; | |
13e228d6 DSH |
1228 | } else if (strncmp(*prule_str, "SUITEB128", 9) == 0) { |
1229 | suiteb_flags = SSL_CERT_FLAG_SUITEB_128_LOS; | |
1230 | } else if (strncmp(*prule_str, "SUITEB192", 9) == 0) { | |
0f113f3e | 1231 | suiteb_flags = SSL_CERT_FLAG_SUITEB_192_LOS; |
13e228d6 | 1232 | } |
0f113f3e MC |
1233 | |
1234 | if (suiteb_flags) { | |
1235 | c->cert_flags &= ~SSL_CERT_FLAG_SUITEB_128_LOS; | |
1236 | c->cert_flags |= suiteb_flags; | |
bbb4ceb8 | 1237 | } else { |
0f113f3e | 1238 | suiteb_flags = c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS; |
bbb4ceb8 | 1239 | } |
0f113f3e MC |
1240 | |
1241 | if (!suiteb_flags) | |
1242 | return 1; | |
1243 | /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */ | |
1244 | ||
1245 | if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)) { | |
4fa52141 VD |
1246 | SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST, |
1247 | SSL_R_AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE); | |
0f113f3e MC |
1248 | return 0; |
1249 | } | |
10bf4fc2 | 1250 | # ifndef OPENSSL_NO_EC |
0f113f3e MC |
1251 | switch (suiteb_flags) { |
1252 | case SSL_CERT_FLAG_SUITEB_128_LOS: | |
1253 | if (suiteb_comb2) | |
1254 | *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1255 | else | |
1256 | *prule_str = | |
1257 | "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1258 | break; | |
1259 | case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY: | |
1260 | *prule_str = "ECDHE-ECDSA-AES128-GCM-SHA256"; | |
1261 | break; | |
1262 | case SSL_CERT_FLAG_SUITEB_192_LOS: | |
1263 | *prule_str = "ECDHE-ECDSA-AES256-GCM-SHA384"; | |
1264 | break; | |
1265 | } | |
0f113f3e MC |
1266 | return 1; |
1267 | # else | |
a230b26e | 1268 | SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST, SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE); |
0f113f3e MC |
1269 | return 0; |
1270 | # endif | |
1271 | } | |
14536c8c | 1272 | #endif |
2ea80354 | 1273 | |
a53b5be6 MC |
1274 | static int ciphersuite_cb(const char *elem, int len, void *arg) |
1275 | { | |
1276 | STACK_OF(SSL_CIPHER) *ciphersuites = (STACK_OF(SSL_CIPHER) *)arg; | |
1277 | const SSL_CIPHER *cipher; | |
1278 | /* Arbitrary sized temp buffer for the cipher name. Should be big enough */ | |
1279 | char name[80]; | |
1280 | ||
1281 | if (len > (int)(sizeof(name) - 1)) { | |
1282 | SSLerr(SSL_F_CIPHERSUITE_CB, SSL_R_NO_CIPHER_MATCH); | |
1283 | return 0; | |
1284 | } | |
1285 | ||
1286 | memcpy(name, elem, len); | |
1287 | name[len] = '\0'; | |
1288 | ||
1289 | cipher = ssl3_get_cipher_by_std_name(name); | |
1290 | if (cipher == NULL) { | |
1291 | SSLerr(SSL_F_CIPHERSUITE_CB, SSL_R_NO_CIPHER_MATCH); | |
1292 | return 0; | |
1293 | } | |
1294 | ||
1295 | if (!sk_SSL_CIPHER_push(ciphersuites, cipher)) { | |
1296 | SSLerr(SSL_F_CIPHERSUITE_CB, ERR_R_INTERNAL_ERROR); | |
1297 | return 0; | |
1298 | } | |
1299 | ||
1300 | return 1; | |
1301 | } | |
1302 | ||
f9a22815 | 1303 | static __owur int set_ciphersuites(STACK_OF(SSL_CIPHER) **currciphers, const char *str) |
a53b5be6 MC |
1304 | { |
1305 | STACK_OF(SSL_CIPHER) *newciphers = sk_SSL_CIPHER_new_null(); | |
1306 | ||
1307 | if (newciphers == NULL) | |
1308 | return 0; | |
1309 | ||
1310 | /* Parse the list. We explicitly allow an empty list */ | |
1311 | if (*str != '\0' | |
1312 | && !CONF_parse_list(str, ':', 1, ciphersuite_cb, newciphers)) { | |
1313 | sk_SSL_CIPHER_free(newciphers); | |
1314 | return 0; | |
1315 | } | |
1316 | sk_SSL_CIPHER_free(*currciphers); | |
1317 | *currciphers = newciphers; | |
1318 | ||
1319 | return 1; | |
1320 | } | |
1321 | ||
1322 | static int update_cipher_list_by_id(STACK_OF(SSL_CIPHER) **cipher_list_by_id, | |
1323 | STACK_OF(SSL_CIPHER) *cipherstack) | |
1324 | { | |
1325 | STACK_OF(SSL_CIPHER) *tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); | |
1326 | ||
1327 | if (tmp_cipher_list == NULL) { | |
1328 | return 0; | |
1329 | } | |
1330 | ||
1331 | sk_SSL_CIPHER_free(*cipher_list_by_id); | |
1332 | *cipher_list_by_id = tmp_cipher_list; | |
1333 | ||
1334 | (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id, ssl_cipher_ptr_id_cmp); | |
1335 | sk_SSL_CIPHER_sort(*cipher_list_by_id); | |
1336 | ||
1337 | return 1; | |
1338 | } | |
1339 | ||
1340 | static int update_cipher_list(STACK_OF(SSL_CIPHER) **cipher_list, | |
1341 | STACK_OF(SSL_CIPHER) **cipher_list_by_id, | |
1342 | STACK_OF(SSL_CIPHER) *tls13_ciphersuites) | |
1343 | { | |
1344 | int i; | |
1345 | STACK_OF(SSL_CIPHER) *tmp_cipher_list = sk_SSL_CIPHER_dup(*cipher_list); | |
1346 | ||
1347 | if (tmp_cipher_list == NULL) | |
1348 | return 0; | |
1349 | ||
1350 | /* | |
1351 | * Delete any existing TLSv1.3 ciphersuites. These are always first in the | |
1352 | * list. | |
1353 | */ | |
1354 | while (sk_SSL_CIPHER_num(tmp_cipher_list) > 0 | |
1355 | && sk_SSL_CIPHER_value(tmp_cipher_list, 0)->min_tls | |
1356 | == TLS1_3_VERSION) | |
1357 | sk_SSL_CIPHER_delete(tmp_cipher_list, 0); | |
1358 | ||
1359 | /* Insert the new TLSv1.3 ciphersuites */ | |
1360 | for (i = 0; i < sk_SSL_CIPHER_num(tls13_ciphersuites); i++) | |
1361 | sk_SSL_CIPHER_insert(tmp_cipher_list, | |
1362 | sk_SSL_CIPHER_value(tls13_ciphersuites, i), i); | |
1363 | ||
1364 | if (!update_cipher_list_by_id(cipher_list_by_id, tmp_cipher_list)) | |
1365 | return 0; | |
1366 | ||
1367 | sk_SSL_CIPHER_free(*cipher_list); | |
1368 | *cipher_list = tmp_cipher_list; | |
1369 | ||
1370 | return 1; | |
1371 | } | |
1372 | ||
1373 | int SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str) | |
1374 | { | |
1375 | int ret = set_ciphersuites(&(ctx->tls13_ciphersuites), str); | |
1376 | ||
52b1fda3 | 1377 | if (ret && ctx->cipher_list != NULL) |
a53b5be6 MC |
1378 | return update_cipher_list(&ctx->cipher_list, &ctx->cipher_list_by_id, |
1379 | ctx->tls13_ciphersuites); | |
a53b5be6 MC |
1380 | |
1381 | return ret; | |
1382 | } | |
1383 | ||
1384 | int SSL_set_ciphersuites(SSL *s, const char *str) | |
1385 | { | |
52b1fda3 | 1386 | STACK_OF(SSL_CIPHER) *cipher_list; |
a53b5be6 MC |
1387 | int ret = set_ciphersuites(&(s->tls13_ciphersuites), str); |
1388 | ||
52b1fda3 | 1389 | if (s->cipher_list == NULL) { |
1390 | if ((cipher_list = SSL_get_ciphers(s)) != NULL) | |
1391 | s->cipher_list = sk_SSL_CIPHER_dup(cipher_list); | |
1392 | } | |
1393 | if (ret && s->cipher_list != NULL) | |
a53b5be6 MC |
1394 | return update_cipher_list(&s->cipher_list, &s->cipher_list_by_id, |
1395 | s->tls13_ciphersuites); | |
a53b5be6 MC |
1396 | |
1397 | return ret; | |
1398 | } | |
1399 | ||
f865b081 MC |
1400 | STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, |
1401 | STACK_OF(SSL_CIPHER) *tls13_ciphersuites, | |
1402 | STACK_OF(SSL_CIPHER) **cipher_list, | |
1403 | STACK_OF(SSL_CIPHER) **cipher_list_by_id, | |
1404 | const char *rule_str, | |
1405 | CERT *c) | |
0f113f3e | 1406 | { |
f865b081 | 1407 | int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases, i; |
6063453c | 1408 | uint32_t disabled_mkey, disabled_auth, disabled_enc, disabled_mac; |
a53b5be6 | 1409 | STACK_OF(SSL_CIPHER) *cipherstack; |
0f113f3e MC |
1410 | const char *rule_p; |
1411 | CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; | |
1412 | const SSL_CIPHER **ca_list = NULL; | |
1413 | ||
1414 | /* | |
1415 | * Return with error if nothing to do. | |
1416 | */ | |
1417 | if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) | |
1418 | return NULL; | |
14536c8c | 1419 | #ifndef OPENSSL_NO_EC |
0f113f3e MC |
1420 | if (!check_suiteb_cipher_list(ssl_method, c, &rule_str)) |
1421 | return NULL; | |
14536c8c | 1422 | #endif |
2ea80354 | 1423 | |
0f113f3e MC |
1424 | /* |
1425 | * To reduce the work to do we only want to process the compiled | |
1426 | * in algorithms, so we first get the mask of disabled ciphers. | |
1427 | */ | |
633d49c7 DSH |
1428 | |
1429 | disabled_mkey = disabled_mkey_mask; | |
1430 | disabled_auth = disabled_auth_mask; | |
1431 | disabled_enc = disabled_enc_mask; | |
1432 | disabled_mac = disabled_mac_mask; | |
0f113f3e MC |
1433 | |
1434 | /* | |
1435 | * Now we have to collect the available ciphers from the compiled | |
1436 | * in ciphers. We cannot get more than the number compiled in, so | |
1437 | * it is used for allocation. | |
1438 | */ | |
1439 | num_of_ciphers = ssl_method->num_ciphers(); | |
55a9a16f | 1440 | |
b4faea50 | 1441 | co_list = OPENSSL_malloc(sizeof(*co_list) * num_of_ciphers); |
0f113f3e MC |
1442 | if (co_list == NULL) { |
1443 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); | |
bbb4ceb8 | 1444 | return NULL; /* Failure */ |
0f113f3e MC |
1445 | } |
1446 | ||
1447 | ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, | |
1448 | disabled_mkey, disabled_auth, disabled_enc, | |
a230b26e | 1449 | disabled_mac, co_list, &head, &tail); |
0f113f3e | 1450 | |
a556f342 | 1451 | /* Now arrange all ciphers by preference. */ |
0f113f3e MC |
1452 | |
1453 | /* | |
1454 | * Everything else being equal, prefer ephemeral ECDH over other key | |
a556f342 EK |
1455 | * exchange mechanisms. |
1456 | * For consistency, prefer ECDSA over RSA (though this only matters if the | |
1457 | * server has both certificates, and is using the DEFAULT, or a client | |
1458 | * preference). | |
0f113f3e | 1459 | */ |
a556f342 EK |
1460 | ssl_cipher_apply_rule(0, SSL_kECDHE, SSL_aECDSA, 0, 0, 0, 0, CIPHER_ADD, |
1461 | -1, &head, &tail); | |
0f113f3e MC |
1462 | ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, |
1463 | &tail); | |
1464 | ssl_cipher_apply_rule(0, SSL_kECDHE, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, | |
1465 | &tail); | |
1466 | ||
a556f342 EK |
1467 | /* Within each strength group, we prefer GCM over CHACHA... */ |
1468 | ssl_cipher_apply_rule(0, 0, 0, SSL_AESGCM, 0, 0, 0, CIPHER_ADD, -1, | |
1469 | &head, &tail); | |
1470 | ssl_cipher_apply_rule(0, 0, 0, SSL_CHACHA20, 0, 0, 0, CIPHER_ADD, -1, | |
1471 | &head, &tail); | |
1472 | ||
a230b26e EK |
1473 | /* |
1474 | * ...and generally, our preferred cipher is AES. | |
1475 | * Note that AEADs will be bumped to take preference after sorting by | |
1476 | * strength. | |
1477 | */ | |
a556f342 EK |
1478 | ssl_cipher_apply_rule(0, 0, 0, SSL_AES ^ SSL_AESGCM, 0, 0, 0, CIPHER_ADD, |
1479 | -1, &head, &tail); | |
0f113f3e MC |
1480 | |
1481 | /* Temporarily enable everything else for sorting */ | |
1482 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); | |
1483 | ||
1484 | /* Low priority for MD5 */ | |
1485 | ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, | |
1486 | &tail); | |
1487 | ||
1488 | /* | |
1489 | * Move anonymous ciphers to the end. Usually, these will remain | |
1490 | * disabled. (For applications that allow them, they aren't too bad, but | |
1491 | * we prefer authenticated ciphers.) | |
1492 | */ | |
1493 | ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1494 | &tail); | |
1495 | ||
0f113f3e MC |
1496 | ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, |
1497 | &tail); | |
1498 | ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, | |
1499 | &tail); | |
0f113f3e | 1500 | |
3519bae5 | 1501 | /* RC4 is sort-of broken -- move to the end */ |
0f113f3e MC |
1502 | ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, |
1503 | &tail); | |
1504 | ||
1505 | /* | |
1506 | * Now sort by symmetric encryption strength. The above ordering remains | |
1507 | * in force within each class | |
1508 | */ | |
1509 | if (!ssl_cipher_strength_sort(&head, &tail)) { | |
1510 | OPENSSL_free(co_list); | |
1511 | return NULL; | |
1512 | } | |
1513 | ||
a556f342 EK |
1514 | /* |
1515 | * Partially overrule strength sort to prefer TLS 1.2 ciphers/PRFs. | |
1516 | * TODO(openssl-team): is there an easier way to accomplish all this? | |
1517 | */ | |
3eb2aff4 | 1518 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, TLS1_2_VERSION, 0, CIPHER_BUMP, -1, |
a556f342 EK |
1519 | &head, &tail); |
1520 | ||
1521 | /* | |
1522 | * Irrespective of strength, enforce the following order: | |
1523 | * (EC)DHE + AEAD > (EC)DHE > rest of AEAD > rest. | |
1524 | * Within each group, ciphers remain sorted by strength and previous | |
1525 | * preference, i.e., | |
1526 | * 1) ECDHE > DHE | |
1527 | * 2) GCM > CHACHA | |
1528 | * 3) AES > rest | |
1529 | * 4) TLS 1.2 > legacy | |
1530 | * | |
1531 | * Because we now bump ciphers to the top of the list, we proceed in | |
1532 | * reverse order of preference. | |
1533 | */ | |
1534 | ssl_cipher_apply_rule(0, 0, 0, 0, SSL_AEAD, 0, 0, CIPHER_BUMP, -1, | |
1535 | &head, &tail); | |
1536 | ssl_cipher_apply_rule(0, SSL_kDHE | SSL_kECDHE, 0, 0, 0, 0, 0, | |
a230b26e | 1537 | CIPHER_BUMP, -1, &head, &tail); |
a556f342 | 1538 | ssl_cipher_apply_rule(0, SSL_kDHE | SSL_kECDHE, 0, 0, SSL_AEAD, 0, 0, |
a230b26e | 1539 | CIPHER_BUMP, -1, &head, &tail); |
a556f342 | 1540 | |
0f113f3e MC |
1541 | /* Now disable everything (maintaining the ordering!) */ |
1542 | ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); | |
1543 | ||
1544 | /* | |
1545 | * We also need cipher aliases for selecting based on the rule_str. | |
1546 | * There might be two types of entries in the rule_str: 1) names | |
1547 | * of ciphers themselves 2) aliases for groups of ciphers. | |
1548 | * For 1) we need the available ciphers and for 2) the cipher | |
1549 | * groups of cipher_aliases added together in one list (otherwise | |
1550 | * we would be happy with just the cipher_aliases table). | |
1551 | */ | |
b6eb9827 | 1552 | num_of_group_aliases = OSSL_NELEM(cipher_aliases); |
0f113f3e | 1553 | num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; |
b4faea50 | 1554 | ca_list = OPENSSL_malloc(sizeof(*ca_list) * num_of_alias_max); |
0f113f3e MC |
1555 | if (ca_list == NULL) { |
1556 | OPENSSL_free(co_list); | |
1557 | SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); | |
bbb4ceb8 | 1558 | return NULL; /* Failure */ |
0f113f3e MC |
1559 | } |
1560 | ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, | |
1561 | disabled_mkey, disabled_auth, disabled_enc, | |
6063453c | 1562 | disabled_mac, head); |
0f113f3e MC |
1563 | |
1564 | /* | |
1565 | * If the rule_string begins with DEFAULT, apply the default rule | |
1566 | * before using the (possibly available) additional rules. | |
1567 | */ | |
1568 | ok = 1; | |
1569 | rule_p = rule_str; | |
1570 | if (strncmp(rule_str, "DEFAULT", 7) == 0) { | |
5d120511 | 1571 | ok = ssl_cipher_process_rulestr(OSSL_default_cipher_list(), |
0f113f3e MC |
1572 | &head, &tail, ca_list, c); |
1573 | rule_p += 7; | |
1574 | if (*rule_p == ':') | |
1575 | rule_p++; | |
1576 | } | |
1577 | ||
4bac25e1 | 1578 | if (ok && (rule_p[0] != '\0')) |
0f113f3e MC |
1579 | ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list, c); |
1580 | ||
a230b26e | 1581 | OPENSSL_free(ca_list); /* Not needed anymore */ |
0f113f3e MC |
1582 | |
1583 | if (!ok) { /* Rule processing failure */ | |
1584 | OPENSSL_free(co_list); | |
bbb4ceb8 | 1585 | return NULL; |
0f113f3e MC |
1586 | } |
1587 | ||
1588 | /* | |
1589 | * Allocate new "cipherstack" for the result, return with error | |
1590 | * if we cannot get one. | |
1591 | */ | |
1592 | if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) { | |
1593 | OPENSSL_free(co_list); | |
bbb4ceb8 | 1594 | return NULL; |
0f113f3e MC |
1595 | } |
1596 | ||
f865b081 MC |
1597 | /* Add TLSv1.3 ciphers first - we always prefer those if possible */ |
1598 | for (i = 0; i < sk_SSL_CIPHER_num(tls13_ciphersuites); i++) { | |
1599 | if (!sk_SSL_CIPHER_push(cipherstack, | |
1600 | sk_SSL_CIPHER_value(tls13_ciphersuites, i))) { | |
1601 | sk_SSL_CIPHER_free(cipherstack); | |
1602 | return NULL; | |
1603 | } | |
1604 | } | |
1605 | ||
77359d22 RL |
1606 | OSSL_TRACE_BEGIN(TLS_CIPHER) { |
1607 | BIO_printf(trc_out, "cipher selection:\n"); | |
1608 | } | |
0f113f3e MC |
1609 | /* |
1610 | * The cipher selection for the list is done. The ciphers are added | |
1611 | * to the resulting precedence to the STACK_OF(SSL_CIPHER). | |
1612 | */ | |
1613 | for (curr = head; curr != NULL; curr = curr->next) { | |
b53338cb | 1614 | if (curr->active) { |
0f113f3e MC |
1615 | if (!sk_SSL_CIPHER_push(cipherstack, curr->cipher)) { |
1616 | OPENSSL_free(co_list); | |
1617 | sk_SSL_CIPHER_free(cipherstack); | |
77359d22 | 1618 | OSSL_TRACE_CANCEL(TLS_CIPHER); |
0f113f3e MC |
1619 | return NULL; |
1620 | } | |
77359d22 RL |
1621 | if (trc_out != NULL) |
1622 | BIO_printf(trc_out, "<%s>\n", curr->cipher->name); | |
0f113f3e MC |
1623 | } |
1624 | } | |
1625 | OPENSSL_free(co_list); /* Not needed any longer */ | |
77359d22 | 1626 | OSSL_TRACE_END(TLS_CIPHER); |
0f113f3e | 1627 | |
a53b5be6 | 1628 | if (!update_cipher_list_by_id(cipher_list_by_id, cipherstack)) { |
0f113f3e MC |
1629 | sk_SSL_CIPHER_free(cipherstack); |
1630 | return NULL; | |
1631 | } | |
25aaa98a | 1632 | sk_SSL_CIPHER_free(*cipher_list); |
0f113f3e | 1633 | *cipher_list = cipherstack; |
0f113f3e | 1634 | |
bbb4ceb8 | 1635 | return cipherstack; |
0f113f3e | 1636 | } |
d02b48c6 | 1637 | |
7689ed34 | 1638 | char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) |
0f113f3e | 1639 | { |
361a1191 | 1640 | const char *ver; |
0f113f3e | 1641 | const char *kx, *au, *enc, *mac; |
baf245ec | 1642 | uint32_t alg_mkey, alg_auth, alg_enc, alg_mac; |
26648109 | 1643 | static const char *format = "%-30s %-7s Kx=%-8s Au=%-5s Enc=%-9s Mac=%-4s\n"; |
0f113f3e | 1644 | |
baf245ec RS |
1645 | if (buf == NULL) { |
1646 | len = 128; | |
cdb10bae RS |
1647 | if ((buf = OPENSSL_malloc(len)) == NULL) { |
1648 | SSLerr(SSL_F_SSL_CIPHER_DESCRIPTION, ERR_R_MALLOC_FAILURE); | |
baf245ec | 1649 | return NULL; |
cdb10bae | 1650 | } |
bbb4ceb8 | 1651 | } else if (len < 128) { |
baf245ec | 1652 | return NULL; |
bbb4ceb8 | 1653 | } |
baf245ec | 1654 | |
0f113f3e MC |
1655 | alg_mkey = cipher->algorithm_mkey; |
1656 | alg_auth = cipher->algorithm_auth; | |
1657 | alg_enc = cipher->algorithm_enc; | |
1658 | alg_mac = cipher->algorithm_mac; | |
0f113f3e | 1659 | |
3eb2aff4 | 1660 | ver = ssl_protocol_to_string(cipher->min_tls); |
0f113f3e MC |
1661 | |
1662 | switch (alg_mkey) { | |
1663 | case SSL_kRSA: | |
361a1191 | 1664 | kx = "RSA"; |
0f113f3e | 1665 | break; |
0f113f3e | 1666 | case SSL_kDHE: |
361a1191 | 1667 | kx = "DH"; |
0f113f3e | 1668 | break; |
0f113f3e MC |
1669 | case SSL_kECDHE: |
1670 | kx = "ECDH"; | |
1671 | break; | |
1672 | case SSL_kPSK: | |
1673 | kx = "PSK"; | |
1674 | break; | |
8baac6a2 DSH |
1675 | case SSL_kRSAPSK: |
1676 | kx = "RSAPSK"; | |
1677 | break; | |
1678 | case SSL_kECDHEPSK: | |
1679 | kx = "ECDHEPSK"; | |
1680 | break; | |
1681 | case SSL_kDHEPSK: | |
1682 | kx = "DHEPSK"; | |
1683 | break; | |
0f113f3e MC |
1684 | case SSL_kSRP: |
1685 | kx = "SRP"; | |
1686 | break; | |
1687 | case SSL_kGOST: | |
1688 | kx = "GOST"; | |
1689 | break; | |
e5c4bf93 DSH |
1690 | case SSL_kANY: |
1691 | kx = "any"; | |
1692 | break; | |
0f113f3e MC |
1693 | default: |
1694 | kx = "unknown"; | |
1695 | } | |
1696 | ||
1697 | switch (alg_auth) { | |
1698 | case SSL_aRSA: | |
1699 | au = "RSA"; | |
1700 | break; | |
1701 | case SSL_aDSS: | |
1702 | au = "DSS"; | |
1703 | break; | |
0f113f3e MC |
1704 | case SSL_aNULL: |
1705 | au = "None"; | |
1706 | break; | |
1707 | case SSL_aECDSA: | |
1708 | au = "ECDSA"; | |
1709 | break; | |
1710 | case SSL_aPSK: | |
1711 | au = "PSK"; | |
1712 | break; | |
1713 | case SSL_aSRP: | |
1714 | au = "SRP"; | |
1715 | break; | |
0f113f3e MC |
1716 | case SSL_aGOST01: |
1717 | au = "GOST01"; | |
1718 | break; | |
48722ff5 | 1719 | /* New GOST ciphersuites have both SSL_aGOST12 and SSL_aGOST01 bits */ |
e44380a9 DB |
1720 | case (SSL_aGOST12 | SSL_aGOST01): |
1721 | au = "GOST12"; | |
1722 | break; | |
e5c4bf93 DSH |
1723 | case SSL_aANY: |
1724 | au = "any"; | |
1725 | break; | |
0f113f3e MC |
1726 | default: |
1727 | au = "unknown"; | |
1728 | break; | |
1729 | } | |
1730 | ||
1731 | switch (alg_enc) { | |
1732 | case SSL_DES: | |
361a1191 | 1733 | enc = "DES(56)"; |
0f113f3e MC |
1734 | break; |
1735 | case SSL_3DES: | |
1736 | enc = "3DES(168)"; | |
1737 | break; | |
1738 | case SSL_RC4: | |
361a1191 | 1739 | enc = "RC4(128)"; |
0f113f3e MC |
1740 | break; |
1741 | case SSL_RC2: | |
361a1191 | 1742 | enc = "RC2(128)"; |
0f113f3e MC |
1743 | break; |
1744 | case SSL_IDEA: | |
1745 | enc = "IDEA(128)"; | |
1746 | break; | |
1747 | case SSL_eNULL: | |
1748 | enc = "None"; | |
1749 | break; | |
1750 | case SSL_AES128: | |
1751 | enc = "AES(128)"; | |
1752 | break; | |
1753 | case SSL_AES256: | |
1754 | enc = "AES(256)"; | |
1755 | break; | |
1756 | case SSL_AES128GCM: | |
1757 | enc = "AESGCM(128)"; | |
1758 | break; | |
1759 | case SSL_AES256GCM: | |
1760 | enc = "AESGCM(256)"; | |
1761 | break; | |
e75c5a79 DSH |
1762 | case SSL_AES128CCM: |
1763 | enc = "AESCCM(128)"; | |
1764 | break; | |
1765 | case SSL_AES256CCM: | |
1766 | enc = "AESCCM(256)"; | |
1767 | break; | |
3d3701ea DSH |
1768 | case SSL_AES128CCM8: |
1769 | enc = "AESCCM8(128)"; | |
1770 | break; | |
1771 | case SSL_AES256CCM8: | |
1772 | enc = "AESCCM8(256)"; | |
1773 | break; | |
0f113f3e MC |
1774 | case SSL_CAMELLIA128: |
1775 | enc = "Camellia(128)"; | |
1776 | break; | |
1777 | case SSL_CAMELLIA256: | |
1778 | enc = "Camellia(256)"; | |
1779 | break; | |
bc326738 JS |
1780 | case SSL_ARIA128GCM: |
1781 | enc = "ARIAGCM(128)"; | |
1782 | break; | |
1783 | case SSL_ARIA256GCM: | |
1784 | enc = "ARIAGCM(256)"; | |
1785 | break; | |
0f113f3e MC |
1786 | case SSL_SEED: |
1787 | enc = "SEED(128)"; | |
1788 | break; | |
1789 | case SSL_eGOST2814789CNT: | |
e44380a9 | 1790 | case SSL_eGOST2814789CNT12: |
0f113f3e MC |
1791 | enc = "GOST89(256)"; |
1792 | break; | |
0d3587c7 MC |
1793 | case SSL_CHACHA20POLY1305: |
1794 | enc = "CHACHA20/POLY1305(256)"; | |
1795 | break; | |
0f113f3e MC |
1796 | default: |
1797 | enc = "unknown"; | |
1798 | break; | |
1799 | } | |
1800 | ||
1801 | switch (alg_mac) { | |
1802 | case SSL_MD5: | |
1803 | mac = "MD5"; | |
1804 | break; | |
1805 | case SSL_SHA1: | |
1806 | mac = "SHA1"; | |
1807 | break; | |
1808 | case SSL_SHA256: | |
1809 | mac = "SHA256"; | |
1810 | break; | |
1811 | case SSL_SHA384: | |
1812 | mac = "SHA384"; | |
1813 | break; | |
1814 | case SSL_AEAD: | |
1815 | mac = "AEAD"; | |
1816 | break; | |
1817 | case SSL_GOST89MAC: | |
e44380a9 | 1818 | case SSL_GOST89MAC12: |
0f113f3e MC |
1819 | mac = "GOST89"; |
1820 | break; | |
1821 | case SSL_GOST94: | |
1822 | mac = "GOST94"; | |
1823 | break; | |
e44380a9 DB |
1824 | case SSL_GOST12_256: |
1825 | case SSL_GOST12_512: | |
1826 | mac = "GOST2012"; | |
1827 | break; | |
0f113f3e MC |
1828 | default: |
1829 | mac = "unknown"; | |
1830 | break; | |
1831 | } | |
1832 | ||
361a1191 | 1833 | BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac); |
55a9a16f | 1834 | |
bbb4ceb8 | 1835 | return buf; |
0f113f3e | 1836 | } |
d02b48c6 | 1837 | |
b11836a6 | 1838 | const char *SSL_CIPHER_get_version(const SSL_CIPHER *c) |
0f113f3e | 1839 | { |
0f113f3e | 1840 | if (c == NULL) |
baf245ec | 1841 | return "(NONE)"; |
ee3a6c64 VD |
1842 | |
1843 | /* | |
1844 | * Backwards-compatibility crutch. In almost all contexts we report TLS | |
1845 | * 1.0 as "TLSv1", but for ciphers we report "TLSv1.0". | |
1846 | */ | |
1847 | if (c->min_tls == TLS1_VERSION) | |
1848 | return "TLSv1.0"; | |
3eb2aff4 | 1849 | return ssl_protocol_to_string(c->min_tls); |
0f113f3e | 1850 | } |
d02b48c6 RE |
1851 | |
1852 | /* return the actual cipher being used */ | |
0821bcd4 | 1853 | const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) |
0f113f3e MC |
1854 | { |
1855 | if (c != NULL) | |
bbb4ceb8 PY |
1856 | return c->name; |
1857 | return "(NONE)"; | |
1858 | } | |
1859 | ||
1860 | /* return the actual cipher being used in RFC standard name */ | |
1861 | const char *SSL_CIPHER_standard_name(const SSL_CIPHER *c) | |
1862 | { | |
1863 | if (c != NULL) | |
1864 | return c->stdname; | |
1865 | return "(NONE)"; | |
1866 | } | |
1867 | ||
1868 | /* return the OpenSSL name based on given RFC standard name */ | |
1869 | const char *OPENSSL_cipher_name(const char *stdname) | |
1870 | { | |
1871 | const SSL_CIPHER *c; | |
1872 | ||
1873 | if (stdname == NULL) | |
1874 | return "(NONE)"; | |
1875 | c = ssl3_get_cipher_by_std_name(stdname); | |
1876 | return SSL_CIPHER_get_name(c); | |
0f113f3e | 1877 | } |
d02b48c6 | 1878 | |
657e60fa | 1879 | /* number of bits for symmetric cipher */ |
1c86d8fd | 1880 | int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) |
0f113f3e | 1881 | { |
1c86d8fd | 1882 | int ret = 0; |
0f113f3e MC |
1883 | |
1884 | if (c != NULL) { | |
1885 | if (alg_bits != NULL) | |
a230b26e EK |
1886 | *alg_bits = (int)c->alg_bits; |
1887 | ret = (int)c->strength_bits; | |
0f113f3e | 1888 | } |
90d9e49a | 1889 | return ret; |
0f113f3e | 1890 | } |
d02b48c6 | 1891 | |
90d9e49a | 1892 | uint32_t SSL_CIPHER_get_id(const SSL_CIPHER *c) |
0f113f3e MC |
1893 | { |
1894 | return c->id; | |
1895 | } | |
08557cf2 | 1896 | |
50966bfa PY |
1897 | uint16_t SSL_CIPHER_get_protocol_id(const SSL_CIPHER *c) |
1898 | { | |
1899 | return c->id & 0xFFFF; | |
1900 | } | |
1901 | ||
6b691a5c | 1902 | SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) |
0f113f3e MC |
1903 | { |
1904 | SSL_COMP *ctmp; | |
1905 | int i, nn; | |
1906 | ||
1907 | if ((n == 0) || (sk == NULL)) | |
26a7d938 | 1908 | return NULL; |
0f113f3e MC |
1909 | nn = sk_SSL_COMP_num(sk); |
1910 | for (i = 0; i < nn; i++) { | |
1911 | ctmp = sk_SSL_COMP_value(sk, i); | |
1912 | if (ctmp->id == n) | |
bbb4ceb8 | 1913 | return ctmp; |
0f113f3e | 1914 | } |
bbb4ceb8 | 1915 | return NULL; |
0f113f3e | 1916 | } |
413c4f45 | 1917 | |
09b6c2ef | 1918 | #ifdef OPENSSL_NO_COMP |
9a555706 | 1919 | STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) |
0f113f3e MC |
1920 | { |
1921 | return NULL; | |
1922 | } | |
a230b26e | 1923 | |
9a555706 RS |
1924 | STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP) |
1925 | *meths) | |
0f113f3e | 1926 | { |
9a555706 | 1927 | return meths; |
0f113f3e | 1928 | } |
a230b26e | 1929 | |
9a555706 RS |
1930 | int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) |
1931 | { | |
1932 | return 1; | |
1933 | } | |
1934 | ||
09b6c2ef | 1935 | #else |
6b691a5c | 1936 | STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) |
0f113f3e MC |
1937 | { |
1938 | load_builtin_compressions(); | |
bbb4ceb8 | 1939 | return ssl_comp_methods; |
0f113f3e MC |
1940 | } |
1941 | ||
1942 | STACK_OF(SSL_COMP) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP) | |
1943 | *meths) | |
1944 | { | |
1945 | STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods; | |
1946 | ssl_comp_methods = meths; | |
1947 | return old_meths; | |
1948 | } | |
cbb67448 | 1949 | |
db7b5e0d | 1950 | static void cmeth_free(SSL_COMP *cm) |
0f113f3e MC |
1951 | { |
1952 | OPENSSL_free(cm); | |
1953 | } | |
db7b5e0d | 1954 | |
b3599dbb | 1955 | void ssl_comp_free_compression_methods_int(void) |
0f113f3e MC |
1956 | { |
1957 | STACK_OF(SSL_COMP) *old_meths = ssl_comp_methods; | |
1958 | ssl_comp_methods = NULL; | |
1959 | sk_SSL_COMP_pop_free(old_meths, cmeth_free); | |
1960 | } | |
db7b5e0d | 1961 | |
6b691a5c | 1962 | int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) |
0f113f3e MC |
1963 | { |
1964 | SSL_COMP *comp; | |
413c4f45 | 1965 | |
9a555706 | 1966 | if (cm == NULL || COMP_get_type(cm) == NID_undef) |
0f113f3e | 1967 | return 1; |
9f495243 | 1968 | |
50e735f9 MC |
1969 | /*- |
1970 | * According to draft-ietf-tls-compression-04.txt, the | |
1971 | * compression number ranges should be the following: | |
1972 | * | |
1973 | * 0 to 63: methods defined by the IETF | |
1974 | * 64 to 192: external party methods assigned by IANA | |
1975 | * 193 to 255: reserved for private use | |
1976 | */ | |
0f113f3e MC |
1977 | if (id < 193 || id > 255) { |
1978 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, | |
1979 | SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); | |
e0670973 | 1980 | return 1; |
0f113f3e MC |
1981 | } |
1982 | ||
b4faea50 | 1983 | comp = OPENSSL_malloc(sizeof(*comp)); |
0f113f3e | 1984 | if (comp == NULL) { |
0f113f3e | 1985 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE); |
bbb4ceb8 | 1986 | return 1; |
0f113f3e MC |
1987 | } |
1988 | ||
1989 | comp->id = id; | |
1990 | comp->method = cm; | |
1991 | load_builtin_compressions(); | |
1992 | if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) { | |
1993 | OPENSSL_free(comp); | |
0f113f3e MC |
1994 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, |
1995 | SSL_R_DUPLICATE_COMPRESSION_ID); | |
bbb4ceb8 | 1996 | return 1; |
bbd86bf5 | 1997 | } |
a230b26e | 1998 | if (ssl_comp_methods == NULL || !sk_SSL_COMP_push(ssl_comp_methods, comp)) { |
0f113f3e | 1999 | OPENSSL_free(comp); |
0f113f3e | 2000 | SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE); |
bbb4ceb8 | 2001 | return 1; |
0f113f3e | 2002 | } |
bbb4ceb8 | 2003 | return 0; |
0f113f3e | 2004 | } |
9a555706 | 2005 | #endif |
377dcdba RL |
2006 | |
2007 | const char *SSL_COMP_get_name(const COMP_METHOD *comp) | |
0f113f3e | 2008 | { |
9a555706 RS |
2009 | #ifndef OPENSSL_NO_COMP |
2010 | return comp ? COMP_get_name(comp) : NULL; | |
2011 | #else | |
0f113f3e | 2012 | return NULL; |
09b6c2ef | 2013 | #endif |
9a555706 RS |
2014 | } |
2015 | ||
e304d3e2 MC |
2016 | const char *SSL_COMP_get0_name(const SSL_COMP *comp) |
2017 | { | |
2018 | #ifndef OPENSSL_NO_COMP | |
2019 | return comp->name; | |
2020 | #else | |
2021 | return NULL; | |
2022 | #endif | |
2023 | } | |
2024 | ||
2025 | int SSL_COMP_get_id(const SSL_COMP *comp) | |
2026 | { | |
2027 | #ifndef OPENSSL_NO_COMP | |
2028 | return comp->id; | |
2029 | #else | |
2030 | return -1; | |
2031 | #endif | |
2032 | } | |
2033 | ||
60d685d1 BK |
2034 | const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr, |
2035 | int all) | |
0f113f3e | 2036 | { |
1316ca80 TS |
2037 | const SSL_CIPHER *c = ssl->method->get_cipher_by_char(ptr); |
2038 | ||
60d685d1 | 2039 | if (c == NULL || (!all && c->valid == 0)) |
0f113f3e MC |
2040 | return NULL; |
2041 | return c; | |
2042 | } | |
94a209d8 DSH |
2043 | |
2044 | const SSL_CIPHER *SSL_CIPHER_find(SSL *ssl, const unsigned char *ptr) | |
0f113f3e MC |
2045 | { |
2046 | return ssl->method->get_cipher_by_char(ptr); | |
2047 | } | |
98c9ce2f DSH |
2048 | |
2049 | int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER *c) | |
2050 | { | |
2051 | int i; | |
2052 | if (c == NULL) | |
3ec13237 | 2053 | return NID_undef; |
98c9ce2f DSH |
2054 | i = ssl_cipher_info_lookup(ssl_cipher_table_cipher, c->algorithm_enc); |
2055 | if (i == -1) | |
3ec13237 | 2056 | return NID_undef; |
98c9ce2f DSH |
2057 | return ssl_cipher_table_cipher[i].nid; |
2058 | } | |
2059 | ||
2060 | int SSL_CIPHER_get_digest_nid(const SSL_CIPHER *c) | |
2061 | { | |
1316ca80 TS |
2062 | int i = ssl_cipher_info_lookup(ssl_cipher_table_mac, c->algorithm_mac); |
2063 | ||
98c9ce2f | 2064 | if (i == -1) |
3ec13237 | 2065 | return NID_undef; |
98c9ce2f DSH |
2066 | return ssl_cipher_table_mac[i].nid; |
2067 | } | |
3ec13237 TS |
2068 | |
2069 | int SSL_CIPHER_get_kx_nid(const SSL_CIPHER *c) | |
2070 | { | |
2071 | int i = ssl_cipher_info_lookup(ssl_cipher_table_kx, c->algorithm_mkey); | |
1316ca80 | 2072 | |
3ec13237 TS |
2073 | if (i == -1) |
2074 | return NID_undef; | |
2075 | return ssl_cipher_table_kx[i].nid; | |
2076 | } | |
2077 | ||
2078 | int SSL_CIPHER_get_auth_nid(const SSL_CIPHER *c) | |
2079 | { | |
1316ca80 TS |
2080 | int i = ssl_cipher_info_lookup(ssl_cipher_table_auth, c->algorithm_auth); |
2081 | ||
3ec13237 TS |
2082 | if (i == -1) |
2083 | return NID_undef; | |
8eb33e4f | 2084 | return ssl_cipher_table_auth[i].nid; |
3ec13237 TS |
2085 | } |
2086 | ||
ba4df682 MC |
2087 | const EVP_MD *SSL_CIPHER_get_handshake_digest(const SSL_CIPHER *c) |
2088 | { | |
72257204 | 2089 | int idx = c->algorithm2 & SSL_HANDSHAKE_MAC_MASK; |
ba4df682 | 2090 | |
ba4df682 MC |
2091 | if (idx < 0 || idx >= SSL_MD_NUM_IDX) |
2092 | return NULL; | |
c8f6c28a | 2093 | return EVP_get_digestbynid(ssl_cipher_table_mac[idx].nid); |
ba4df682 MC |
2094 | } |
2095 | ||
3ec13237 TS |
2096 | int SSL_CIPHER_is_aead(const SSL_CIPHER *c) |
2097 | { | |
2098 | return (c->algorithm_mac & SSL_AEAD) ? 1 : 0; | |
2099 | } | |
045bd047 DW |
2100 | |
2101 | int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead, | |
2102 | size_t *int_overhead, size_t *blocksize, | |
2103 | size_t *ext_overhead) | |
2104 | { | |
2105 | size_t mac = 0, in = 0, blk = 0, out = 0; | |
2106 | ||
2107 | /* Some hard-coded numbers for the CCM/Poly1305 MAC overhead | |
2108 | * because there are no handy #defines for those. */ | |
bc326738 | 2109 | if (c->algorithm_enc & (SSL_AESGCM | SSL_ARIAGCM)) { |
045bd047 DW |
2110 | out = EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; |
2111 | } else if (c->algorithm_enc & (SSL_AES128CCM | SSL_AES256CCM)) { | |
2112 | out = EVP_CCM_TLS_EXPLICIT_IV_LEN + 16; | |
2113 | } else if (c->algorithm_enc & (SSL_AES128CCM8 | SSL_AES256CCM8)) { | |
2114 | out = EVP_CCM_TLS_EXPLICIT_IV_LEN + 8; | |
2115 | } else if (c->algorithm_enc & SSL_CHACHA20POLY1305) { | |
2116 | out = 16; | |
2117 | } else if (c->algorithm_mac & SSL_AEAD) { | |
2118 | /* We're supposed to have handled all the AEAD modes above */ | |
2119 | return 0; | |
2120 | } else { | |
2121 | /* Non-AEAD modes. Calculate MAC/cipher overhead separately */ | |
2122 | int digest_nid = SSL_CIPHER_get_digest_nid(c); | |
2123 | const EVP_MD *e_md = EVP_get_digestbynid(digest_nid); | |
2124 | ||
2125 | if (e_md == NULL) | |
2126 | return 0; | |
2127 | ||
2128 | mac = EVP_MD_size(e_md); | |
2129 | if (c->algorithm_enc != SSL_eNULL) { | |
2130 | int cipher_nid = SSL_CIPHER_get_cipher_nid(c); | |
2131 | const EVP_CIPHER *e_ciph = EVP_get_cipherbynid(cipher_nid); | |
2132 | ||
2133 | /* If it wasn't AEAD or SSL_eNULL, we expect it to be a | |
2134 | known CBC cipher. */ | |
2135 | if (e_ciph == NULL || | |
2136 | EVP_CIPHER_mode(e_ciph) != EVP_CIPH_CBC_MODE) | |
2137 | return 0; | |
2138 | ||
2139 | in = 1; /* padding length byte */ | |
2140 | out = EVP_CIPHER_iv_length(e_ciph); | |
2141 | blk = EVP_CIPHER_block_size(e_ciph); | |
2142 | } | |
2143 | } | |
2144 | ||
2145 | *mac_overhead = mac; | |
2146 | *int_overhead = in; | |
2147 | *blocksize = blk; | |
2148 | *ext_overhead = out; | |
2149 | ||
2150 | return 1; | |
2151 | } | |
c04cd728 DSH |
2152 | |
2153 | int ssl_cert_is_disabled(size_t idx) | |
2154 | { | |
2155 | const SSL_CERT_LOOKUP *cl = ssl_cert_lookup_by_idx(idx); | |
2156 | ||
2157 | if (cl == NULL || (cl->amask & disabled_auth_mask) != 0) | |
2158 | return 1; | |
2159 | return 0; | |
2160 | } | |
5d120511 TS |
2161 | |
2162 | /* | |
2163 | * Default list of TLSv1.2 (and earlier) ciphers | |
2164 | * SSL_DEFAULT_CIPHER_LIST deprecated in 3.0.0 | |
2165 | * Update both macro and function simultaneously | |
2166 | */ | |
2167 | const char *OSSL_default_cipher_list(void) | |
2168 | { | |
2169 | return "ALL:!COMPLEMENTOFDEFAULT:!eNULL"; | |
2170 | } | |
2171 | ||
2172 | /* | |
2173 | * Default list of TLSv1.3 (and later) ciphers | |
2174 | * TLS_DEFAULT_CIPHERSUITES deprecated in 3.0.0 | |
2175 | * Update both macro and function simultaneously | |
2176 | */ | |
2177 | const char *OSSL_default_ciphersuites(void) | |
2178 | { | |
2179 | return "TLS_AES_256_GCM_SHA384:" | |
2180 | #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305) | |
2181 | "TLS_CHACHA20_POLY1305_SHA256:" | |
2182 | #endif | |
2183 | "TLS_AES_128_GCM_SHA256"; | |
2184 | } |