2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the Apache License 2.0 (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
14 #include <openssl/objects.h>
15 #include <openssl/comp.h>
16 #include <openssl/engine.h>
17 #include <openssl/crypto.h>
18 #include <openssl/conf.h>
19 #include "internal/nelem.h"
21 #include "internal/thread_once.h"
22 #include "internal/cryptlib.h"
24 #define SSL_ENC_DES_IDX 0
25 #define SSL_ENC_3DES_IDX 1
26 #define SSL_ENC_RC4_IDX 2
27 #define SSL_ENC_RC2_IDX 3
28 #define SSL_ENC_IDEA_IDX 4
29 #define SSL_ENC_NULL_IDX 5
30 #define SSL_ENC_AES128_IDX 6
31 #define SSL_ENC_AES256_IDX 7
32 #define SSL_ENC_CAMELLIA128_IDX 8
33 #define SSL_ENC_CAMELLIA256_IDX 9
34 #define SSL_ENC_GOST89_IDX 10
35 #define SSL_ENC_SEED_IDX 11
36 #define SSL_ENC_AES128GCM_IDX 12
37 #define SSL_ENC_AES256GCM_IDX 13
38 #define SSL_ENC_AES128CCM_IDX 14
39 #define SSL_ENC_AES256CCM_IDX 15
40 #define SSL_ENC_AES128CCM8_IDX 16
41 #define SSL_ENC_AES256CCM8_IDX 17
42 #define SSL_ENC_GOST8912_IDX 18
43 #define SSL_ENC_CHACHA_IDX 19
44 #define SSL_ENC_ARIA128GCM_IDX 20
45 #define SSL_ENC_ARIA256GCM_IDX 21
46 #define SSL_ENC_NUM_IDX 22
48 /* NB: make sure indices in these tables match values above */
55 /* Table of NIDs for each cipher */
56 static const ssl_cipher_table ssl_cipher_table_cipher
[SSL_ENC_NUM_IDX
] = {
57 {SSL_DES
, NID_des_cbc
}, /* SSL_ENC_DES_IDX 0 */
58 {SSL_3DES
, NID_des_ede3_cbc
}, /* SSL_ENC_3DES_IDX 1 */
59 {SSL_RC4
, NID_rc4
}, /* SSL_ENC_RC4_IDX 2 */
60 {SSL_RC2
, NID_rc2_cbc
}, /* SSL_ENC_RC2_IDX 3 */
61 {SSL_IDEA
, NID_idea_cbc
}, /* SSL_ENC_IDEA_IDX 4 */
62 {SSL_eNULL
, NID_undef
}, /* SSL_ENC_NULL_IDX 5 */
63 {SSL_AES128
, NID_aes_128_cbc
}, /* SSL_ENC_AES128_IDX 6 */
64 {SSL_AES256
, NID_aes_256_cbc
}, /* SSL_ENC_AES256_IDX 7 */
65 {SSL_CAMELLIA128
, NID_camellia_128_cbc
}, /* SSL_ENC_CAMELLIA128_IDX 8 */
66 {SSL_CAMELLIA256
, NID_camellia_256_cbc
}, /* SSL_ENC_CAMELLIA256_IDX 9 */
67 {SSL_eGOST2814789CNT
, NID_gost89_cnt
}, /* SSL_ENC_GOST89_IDX 10 */
68 {SSL_SEED
, NID_seed_cbc
}, /* SSL_ENC_SEED_IDX 11 */
69 {SSL_AES128GCM
, NID_aes_128_gcm
}, /* SSL_ENC_AES128GCM_IDX 12 */
70 {SSL_AES256GCM
, NID_aes_256_gcm
}, /* SSL_ENC_AES256GCM_IDX 13 */
71 {SSL_AES128CCM
, NID_aes_128_ccm
}, /* SSL_ENC_AES128CCM_IDX 14 */
72 {SSL_AES256CCM
, NID_aes_256_ccm
}, /* SSL_ENC_AES256CCM_IDX 15 */
73 {SSL_AES128CCM8
, NID_aes_128_ccm
}, /* SSL_ENC_AES128CCM8_IDX 16 */
74 {SSL_AES256CCM8
, NID_aes_256_ccm
}, /* SSL_ENC_AES256CCM8_IDX 17 */
75 {SSL_eGOST2814789CNT12
, NID_gost89_cnt_12
}, /* SSL_ENC_GOST8912_IDX 18 */
76 {SSL_CHACHA20POLY1305
, NID_chacha20_poly1305
}, /* SSL_ENC_CHACHA_IDX 19 */
77 {SSL_ARIA128GCM
, NID_aria_128_gcm
}, /* SSL_ENC_ARIA128GCM_IDX 20 */
78 {SSL_ARIA256GCM
, NID_aria_256_gcm
}, /* SSL_ENC_ARIA256GCM_IDX 21 */
81 static const EVP_CIPHER
*ssl_cipher_methods
[SSL_ENC_NUM_IDX
];
83 #define SSL_COMP_NULL_IDX 0
84 #define SSL_COMP_ZLIB_IDX 1
85 #define SSL_COMP_NUM_IDX 2
87 static STACK_OF(SSL_COMP
) *ssl_comp_methods
= NULL
;
89 #ifndef OPENSSL_NO_COMP
90 static CRYPTO_ONCE ssl_load_builtin_comp_once
= CRYPTO_ONCE_STATIC_INIT
;
94 * Constant SSL_MAX_DIGEST equal to size of digests array should be defined
98 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
100 /* NB: make sure indices in this table matches values above */
101 static const ssl_cipher_table ssl_cipher_table_mac
[SSL_MD_NUM_IDX
] = {
102 {SSL_MD5
, NID_md5
}, /* SSL_MD_MD5_IDX 0 */
103 {SSL_SHA1
, NID_sha1
}, /* SSL_MD_SHA1_IDX 1 */
104 {SSL_GOST94
, NID_id_GostR3411_94
}, /* SSL_MD_GOST94_IDX 2 */
105 {SSL_GOST89MAC
, NID_id_Gost28147_89_MAC
}, /* SSL_MD_GOST89MAC_IDX 3 */
106 {SSL_SHA256
, NID_sha256
}, /* SSL_MD_SHA256_IDX 4 */
107 {SSL_SHA384
, NID_sha384
}, /* SSL_MD_SHA384_IDX 5 */
108 {SSL_GOST12_256
, NID_id_GostR3411_2012_256
}, /* SSL_MD_GOST12_256_IDX 6 */
109 {SSL_GOST89MAC12
, NID_gost_mac_12
}, /* SSL_MD_GOST89MAC12_IDX 7 */
110 {SSL_GOST12_512
, NID_id_GostR3411_2012_512
}, /* SSL_MD_GOST12_512_IDX 8 */
111 {0, NID_md5_sha1
}, /* SSL_MD_MD5_SHA1_IDX 9 */
112 {0, NID_sha224
}, /* SSL_MD_SHA224_IDX 10 */
113 {0, NID_sha512
} /* SSL_MD_SHA512_IDX 11 */
116 static const EVP_MD
*ssl_digest_methods
[SSL_MD_NUM_IDX
] = {
117 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
121 static const ssl_cipher_table ssl_cipher_table_kx
[] = {
122 {SSL_kRSA
, NID_kx_rsa
},
123 {SSL_kECDHE
, NID_kx_ecdhe
},
124 {SSL_kDHE
, NID_kx_dhe
},
125 {SSL_kECDHEPSK
, NID_kx_ecdhe_psk
},
126 {SSL_kDHEPSK
, NID_kx_dhe_psk
},
127 {SSL_kRSAPSK
, NID_kx_rsa_psk
},
128 {SSL_kPSK
, NID_kx_psk
},
129 {SSL_kSRP
, NID_kx_srp
},
130 {SSL_kGOST
, NID_kx_gost
},
131 {SSL_kANY
, NID_kx_any
}
134 static const ssl_cipher_table ssl_cipher_table_auth
[] = {
135 {SSL_aRSA
, NID_auth_rsa
},
136 {SSL_aECDSA
, NID_auth_ecdsa
},
137 {SSL_aPSK
, NID_auth_psk
},
138 {SSL_aDSS
, NID_auth_dss
},
139 {SSL_aGOST01
, NID_auth_gost01
},
140 {SSL_aGOST12
, NID_auth_gost12
},
141 {SSL_aSRP
, NID_auth_srp
},
142 {SSL_aNULL
, NID_auth_null
},
143 {SSL_aANY
, NID_auth_any
}
147 /* Utility function for table lookup */
148 static int ssl_cipher_info_find(const ssl_cipher_table
* table
,
149 size_t table_cnt
, uint32_t mask
)
152 for (i
= 0; i
< table_cnt
; i
++, table
++) {
153 if (table
->mask
== mask
)
159 #define ssl_cipher_info_lookup(table, x) \
160 ssl_cipher_info_find(table, OSSL_NELEM(table), x)
163 * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation
164 * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is
167 static int ssl_mac_pkey_id
[SSL_MD_NUM_IDX
] = {
168 /* MD5, SHA, GOST94, MAC89 */
169 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, NID_undef
,
170 /* SHA256, SHA384, GOST2012_256, MAC89-12 */
171 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, NID_undef
,
174 /* MD5/SHA1, SHA224, SHA512 */
175 NID_undef
, NID_undef
, NID_undef
178 static size_t ssl_mac_secret_size
[SSL_MD_NUM_IDX
];
181 #define CIPHER_KILL 2
184 #define CIPHER_SPECIAL 5
186 * Bump the ciphers to the top of the list.
187 * This rule isn't currently supported by the public cipherstring API.
189 #define CIPHER_BUMP 6
191 typedef struct cipher_order_st
{
192 const SSL_CIPHER
*cipher
;
195 struct cipher_order_st
*next
, *prev
;
198 static const SSL_CIPHER cipher_aliases
[] = {
199 /* "ALL" doesn't include eNULL (must be specifically enabled) */
200 {0, SSL_TXT_ALL
, NULL
, 0, 0, 0, ~SSL_eNULL
},
201 /* "COMPLEMENTOFALL" */
202 {0, SSL_TXT_CMPALL
, NULL
, 0, 0, 0, SSL_eNULL
},
205 * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in
208 {0, SSL_TXT_CMPDEF
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_NOT_DEFAULT
},
211 * key exchange aliases (some of those using only a single bit here
212 * combine multiple key exchange algs according to the RFCs, e.g. kDHE
213 * combines DHE_DSS and DHE_RSA)
215 {0, SSL_TXT_kRSA
, NULL
, 0, SSL_kRSA
},
217 {0, SSL_TXT_kEDH
, NULL
, 0, SSL_kDHE
},
218 {0, SSL_TXT_kDHE
, NULL
, 0, SSL_kDHE
},
219 {0, SSL_TXT_DH
, NULL
, 0, SSL_kDHE
},
221 {0, SSL_TXT_kEECDH
, NULL
, 0, SSL_kECDHE
},
222 {0, SSL_TXT_kECDHE
, NULL
, 0, SSL_kECDHE
},
223 {0, SSL_TXT_ECDH
, NULL
, 0, SSL_kECDHE
},
225 {0, SSL_TXT_kPSK
, NULL
, 0, SSL_kPSK
},
226 {0, SSL_TXT_kRSAPSK
, NULL
, 0, SSL_kRSAPSK
},
227 {0, SSL_TXT_kECDHEPSK
, NULL
, 0, SSL_kECDHEPSK
},
228 {0, SSL_TXT_kDHEPSK
, NULL
, 0, SSL_kDHEPSK
},
229 {0, SSL_TXT_kSRP
, NULL
, 0, SSL_kSRP
},
230 {0, SSL_TXT_kGOST
, NULL
, 0, SSL_kGOST
},
232 /* server authentication aliases */
233 {0, SSL_TXT_aRSA
, NULL
, 0, 0, SSL_aRSA
},
234 {0, SSL_TXT_aDSS
, NULL
, 0, 0, SSL_aDSS
},
235 {0, SSL_TXT_DSS
, NULL
, 0, 0, SSL_aDSS
},
236 {0, SSL_TXT_aNULL
, NULL
, 0, 0, SSL_aNULL
},
237 {0, SSL_TXT_aECDSA
, NULL
, 0, 0, SSL_aECDSA
},
238 {0, SSL_TXT_ECDSA
, NULL
, 0, 0, SSL_aECDSA
},
239 {0, SSL_TXT_aPSK
, NULL
, 0, 0, SSL_aPSK
},
240 {0, SSL_TXT_aGOST01
, NULL
, 0, 0, SSL_aGOST01
},
241 {0, SSL_TXT_aGOST12
, NULL
, 0, 0, SSL_aGOST12
},
242 {0, SSL_TXT_aGOST
, NULL
, 0, 0, SSL_aGOST01
| SSL_aGOST12
},
243 {0, SSL_TXT_aSRP
, NULL
, 0, 0, SSL_aSRP
},
245 /* aliases combining key exchange and server authentication */
246 {0, SSL_TXT_EDH
, NULL
, 0, SSL_kDHE
, ~SSL_aNULL
},
247 {0, SSL_TXT_DHE
, NULL
, 0, SSL_kDHE
, ~SSL_aNULL
},
248 {0, SSL_TXT_EECDH
, NULL
, 0, SSL_kECDHE
, ~SSL_aNULL
},
249 {0, SSL_TXT_ECDHE
, NULL
, 0, SSL_kECDHE
, ~SSL_aNULL
},
250 {0, SSL_TXT_NULL
, NULL
, 0, 0, 0, SSL_eNULL
},
251 {0, SSL_TXT_RSA
, NULL
, 0, SSL_kRSA
, SSL_aRSA
},
252 {0, SSL_TXT_ADH
, NULL
, 0, SSL_kDHE
, SSL_aNULL
},
253 {0, SSL_TXT_AECDH
, NULL
, 0, SSL_kECDHE
, SSL_aNULL
},
254 {0, SSL_TXT_PSK
, NULL
, 0, SSL_PSK
},
255 {0, SSL_TXT_SRP
, NULL
, 0, SSL_kSRP
},
257 /* symmetric encryption aliases */
258 {0, SSL_TXT_3DES
, NULL
, 0, 0, 0, SSL_3DES
},
259 {0, SSL_TXT_RC4
, NULL
, 0, 0, 0, SSL_RC4
},
260 {0, SSL_TXT_RC2
, NULL
, 0, 0, 0, SSL_RC2
},
261 {0, SSL_TXT_IDEA
, NULL
, 0, 0, 0, SSL_IDEA
},
262 {0, SSL_TXT_SEED
, NULL
, 0, 0, 0, SSL_SEED
},
263 {0, SSL_TXT_eNULL
, NULL
, 0, 0, 0, SSL_eNULL
},
264 {0, SSL_TXT_GOST
, NULL
, 0, 0, 0, SSL_eGOST2814789CNT
| SSL_eGOST2814789CNT12
},
265 {0, SSL_TXT_AES128
, NULL
, 0, 0, 0,
266 SSL_AES128
| SSL_AES128GCM
| SSL_AES128CCM
| SSL_AES128CCM8
},
267 {0, SSL_TXT_AES256
, NULL
, 0, 0, 0,
268 SSL_AES256
| SSL_AES256GCM
| SSL_AES256CCM
| SSL_AES256CCM8
},
269 {0, SSL_TXT_AES
, NULL
, 0, 0, 0, SSL_AES
},
270 {0, SSL_TXT_AES_GCM
, NULL
, 0, 0, 0, SSL_AES128GCM
| SSL_AES256GCM
},
271 {0, SSL_TXT_AES_CCM
, NULL
, 0, 0, 0,
272 SSL_AES128CCM
| SSL_AES256CCM
| SSL_AES128CCM8
| SSL_AES256CCM8
},
273 {0, SSL_TXT_AES_CCM_8
, NULL
, 0, 0, 0, SSL_AES128CCM8
| SSL_AES256CCM8
},
274 {0, SSL_TXT_CAMELLIA128
, NULL
, 0, 0, 0, SSL_CAMELLIA128
},
275 {0, SSL_TXT_CAMELLIA256
, NULL
, 0, 0, 0, SSL_CAMELLIA256
},
276 {0, SSL_TXT_CAMELLIA
, NULL
, 0, 0, 0, SSL_CAMELLIA
},
277 {0, SSL_TXT_CHACHA20
, NULL
, 0, 0, 0, SSL_CHACHA20
},
279 {0, SSL_TXT_ARIA
, NULL
, 0, 0, 0, SSL_ARIA
},
280 {0, SSL_TXT_ARIA_GCM
, NULL
, 0, 0, 0, SSL_ARIA128GCM
| SSL_ARIA256GCM
},
281 {0, SSL_TXT_ARIA128
, NULL
, 0, 0, 0, SSL_ARIA128GCM
},
282 {0, SSL_TXT_ARIA256
, NULL
, 0, 0, 0, SSL_ARIA256GCM
},
285 {0, SSL_TXT_MD5
, NULL
, 0, 0, 0, 0, SSL_MD5
},
286 {0, SSL_TXT_SHA1
, NULL
, 0, 0, 0, 0, SSL_SHA1
},
287 {0, SSL_TXT_SHA
, NULL
, 0, 0, 0, 0, SSL_SHA1
},
288 {0, SSL_TXT_GOST94
, NULL
, 0, 0, 0, 0, SSL_GOST94
},
289 {0, SSL_TXT_GOST89MAC
, NULL
, 0, 0, 0, 0, SSL_GOST89MAC
| SSL_GOST89MAC12
},
290 {0, SSL_TXT_SHA256
, NULL
, 0, 0, 0, 0, SSL_SHA256
},
291 {0, SSL_TXT_SHA384
, NULL
, 0, 0, 0, 0, SSL_SHA384
},
292 {0, SSL_TXT_GOST12
, NULL
, 0, 0, 0, 0, SSL_GOST12_256
},
294 /* protocol version aliases */
295 {0, SSL_TXT_SSLV3
, NULL
, 0, 0, 0, 0, 0, SSL3_VERSION
},
296 {0, SSL_TXT_TLSV1
, NULL
, 0, 0, 0, 0, 0, TLS1_VERSION
},
297 {0, "TLSv1.0", NULL
, 0, 0, 0, 0, 0, TLS1_VERSION
},
298 {0, SSL_TXT_TLSV1_2
, NULL
, 0, 0, 0, 0, 0, TLS1_2_VERSION
},
300 /* strength classes */
301 {0, SSL_TXT_LOW
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_LOW
},
302 {0, SSL_TXT_MEDIUM
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_MEDIUM
},
303 {0, SSL_TXT_HIGH
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_HIGH
},
304 /* FIPS 140-2 approved ciphersuite */
305 {0, SSL_TXT_FIPS
, NULL
, 0, 0, 0, ~SSL_eNULL
, 0, 0, 0, 0, 0, SSL_FIPS
},
307 /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */
308 {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA
, NULL
, 0,
309 SSL_kDHE
, SSL_aDSS
, SSL_3DES
, SSL_SHA1
, 0, 0, 0, 0, SSL_HIGH
| SSL_FIPS
},
310 {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA
, NULL
, 0,
311 SSL_kDHE
, SSL_aRSA
, SSL_3DES
, SSL_SHA1
, 0, 0, 0, 0, SSL_HIGH
| SSL_FIPS
},
316 * Search for public key algorithm with given name and return its pkey_id if
317 * it is available. Otherwise return 0
319 #ifdef OPENSSL_NO_ENGINE
321 static int get_optional_pkey_id(const char *pkey_name
)
323 const EVP_PKEY_ASN1_METHOD
*ameth
;
325 ameth
= EVP_PKEY_asn1_find_str(NULL
, pkey_name
, -1);
326 if (ameth
&& EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
,
334 static int get_optional_pkey_id(const char *pkey_name
)
336 const EVP_PKEY_ASN1_METHOD
*ameth
;
337 ENGINE
*tmpeng
= NULL
;
339 ameth
= EVP_PKEY_asn1_find_str(&tmpeng
, pkey_name
, -1);
341 if (EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
,
345 ENGINE_finish(tmpeng
);
351 /* masks of disabled algorithms */
352 static uint32_t disabled_enc_mask
;
353 static uint32_t disabled_mac_mask
;
354 static uint32_t disabled_mkey_mask
;
355 static uint32_t disabled_auth_mask
;
357 int ssl_load_ciphers(void)
360 const ssl_cipher_table
*t
;
362 disabled_enc_mask
= 0;
363 ssl_sort_cipher_list();
364 for (i
= 0, t
= ssl_cipher_table_cipher
; i
< SSL_ENC_NUM_IDX
; i
++, t
++) {
365 if (t
->nid
== NID_undef
) {
366 ssl_cipher_methods
[i
] = NULL
;
368 const EVP_CIPHER
*cipher
= EVP_get_cipherbynid(t
->nid
);
369 ssl_cipher_methods
[i
] = cipher
;
371 disabled_enc_mask
|= t
->mask
;
374 disabled_mac_mask
= 0;
375 for (i
= 0, t
= ssl_cipher_table_mac
; i
< SSL_MD_NUM_IDX
; i
++, t
++) {
376 const EVP_MD
*md
= EVP_get_digestbynid(t
->nid
);
377 ssl_digest_methods
[i
] = md
;
379 disabled_mac_mask
|= t
->mask
;
381 int tmpsize
= EVP_MD_size(md
);
382 if (!ossl_assert(tmpsize
>= 0))
384 ssl_mac_secret_size
[i
] = tmpsize
;
387 /* Make sure we can access MD5 and SHA1 */
388 if (!ossl_assert(ssl_digest_methods
[SSL_MD_MD5_IDX
] != NULL
))
390 if (!ossl_assert(ssl_digest_methods
[SSL_MD_SHA1_IDX
] != NULL
))
393 disabled_mkey_mask
= 0;
394 disabled_auth_mask
= 0;
396 #ifdef OPENSSL_NO_RSA
397 disabled_mkey_mask
|= SSL_kRSA
| SSL_kRSAPSK
;
398 disabled_auth_mask
|= SSL_aRSA
;
400 #ifdef OPENSSL_NO_DSA
401 disabled_auth_mask
|= SSL_aDSS
;
404 disabled_mkey_mask
|= SSL_kDHE
| SSL_kDHEPSK
;
407 disabled_mkey_mask
|= SSL_kECDHE
| SSL_kECDHEPSK
;
408 disabled_auth_mask
|= SSL_aECDSA
;
410 #ifdef OPENSSL_NO_PSK
411 disabled_mkey_mask
|= SSL_PSK
;
412 disabled_auth_mask
|= SSL_aPSK
;
414 #ifdef OPENSSL_NO_SRP
415 disabled_mkey_mask
|= SSL_kSRP
;
419 * Check for presence of GOST 34.10 algorithms, and if they are not
420 * present, disable appropriate auth and key exchange
422 ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
] = get_optional_pkey_id("gost-mac");
423 if (ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
])
424 ssl_mac_secret_size
[SSL_MD_GOST89MAC_IDX
] = 32;
426 disabled_mac_mask
|= SSL_GOST89MAC
;
428 ssl_mac_pkey_id
[SSL_MD_GOST89MAC12_IDX
] =
429 get_optional_pkey_id("gost-mac-12");
430 if (ssl_mac_pkey_id
[SSL_MD_GOST89MAC12_IDX
])
431 ssl_mac_secret_size
[SSL_MD_GOST89MAC12_IDX
] = 32;
433 disabled_mac_mask
|= SSL_GOST89MAC12
;
435 if (!get_optional_pkey_id("gost2001"))
436 disabled_auth_mask
|= SSL_aGOST01
| SSL_aGOST12
;
437 if (!get_optional_pkey_id("gost2012_256"))
438 disabled_auth_mask
|= SSL_aGOST12
;
439 if (!get_optional_pkey_id("gost2012_512"))
440 disabled_auth_mask
|= SSL_aGOST12
;
442 * Disable GOST key exchange if no GOST signature algs are available *
444 if ((disabled_auth_mask
& (SSL_aGOST01
| SSL_aGOST12
)) ==
445 (SSL_aGOST01
| SSL_aGOST12
))
446 disabled_mkey_mask
|= SSL_kGOST
;
451 #ifndef OPENSSL_NO_COMP
453 static int sk_comp_cmp(const SSL_COMP
*const *a
, const SSL_COMP
*const *b
)
455 return ((*a
)->id
- (*b
)->id
);
458 DEFINE_RUN_ONCE_STATIC(do_load_builtin_compressions
)
460 SSL_COMP
*comp
= NULL
;
461 COMP_METHOD
*method
= COMP_zlib();
463 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE
);
464 ssl_comp_methods
= sk_SSL_COMP_new(sk_comp_cmp
);
466 if (COMP_get_type(method
) != NID_undef
&& ssl_comp_methods
!= NULL
) {
467 comp
= OPENSSL_malloc(sizeof(*comp
));
469 comp
->method
= method
;
470 comp
->id
= SSL_COMP_ZLIB_IDX
;
471 comp
->name
= COMP_get_name(method
);
472 sk_SSL_COMP_push(ssl_comp_methods
, comp
);
473 sk_SSL_COMP_sort(ssl_comp_methods
);
476 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE
);
480 static int load_builtin_compressions(void)
482 return RUN_ONCE(&ssl_load_builtin_comp_once
, do_load_builtin_compressions
);
486 int ssl_cipher_get_evp(const SSL_SESSION
*s
, const EVP_CIPHER
**enc
,
487 const EVP_MD
**md
, int *mac_pkey_type
,
488 size_t *mac_secret_size
, SSL_COMP
**comp
, int use_etm
)
498 #ifndef OPENSSL_NO_COMP
499 if (!load_builtin_compressions()) {
501 * Currently don't care, since a failure only means that
502 * ssl_comp_methods is NULL, which is perfectly OK
507 ctmp
.id
= s
->compress_meth
;
508 if (ssl_comp_methods
!= NULL
) {
509 i
= sk_SSL_COMP_find(ssl_comp_methods
, &ctmp
);
510 *comp
= sk_SSL_COMP_value(ssl_comp_methods
, i
);
512 /* If were only interested in comp then return success */
513 if ((enc
== NULL
) && (md
== NULL
))
517 if ((enc
== NULL
) || (md
== NULL
))
520 i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, c
->algorithm_enc
);
525 if (i
== SSL_ENC_NULL_IDX
)
526 *enc
= EVP_enc_null();
528 *enc
= ssl_cipher_methods
[i
];
531 i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
534 if (mac_pkey_type
!= NULL
)
535 *mac_pkey_type
= NID_undef
;
536 if (mac_secret_size
!= NULL
)
537 *mac_secret_size
= 0;
538 if (c
->algorithm_mac
== SSL_AEAD
)
539 mac_pkey_type
= NULL
;
541 *md
= ssl_digest_methods
[i
];
542 if (mac_pkey_type
!= NULL
)
543 *mac_pkey_type
= ssl_mac_pkey_id
[i
];
544 if (mac_secret_size
!= NULL
)
545 *mac_secret_size
= ssl_mac_secret_size
[i
];
548 if ((*enc
!= NULL
) &&
549 (*md
!= NULL
|| (EVP_CIPHER_flags(*enc
) & EVP_CIPH_FLAG_AEAD_CIPHER
))
550 && (!mac_pkey_type
|| *mac_pkey_type
!= NID_undef
)) {
551 const EVP_CIPHER
*evp
;
556 if (s
->ssl_version
>> 8 != TLS1_VERSION_MAJOR
||
557 s
->ssl_version
< TLS1_VERSION
)
560 if (c
->algorithm_enc
== SSL_RC4
&&
561 c
->algorithm_mac
== SSL_MD5
&&
562 (evp
= EVP_get_cipherbyname("RC4-HMAC-MD5")))
563 *enc
= evp
, *md
= NULL
;
564 else if (c
->algorithm_enc
== SSL_AES128
&&
565 c
->algorithm_mac
== SSL_SHA1
&&
566 (evp
= EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
567 *enc
= evp
, *md
= NULL
;
568 else if (c
->algorithm_enc
== SSL_AES256
&&
569 c
->algorithm_mac
== SSL_SHA1
&&
570 (evp
= EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
571 *enc
= evp
, *md
= NULL
;
572 else if (c
->algorithm_enc
== SSL_AES128
&&
573 c
->algorithm_mac
== SSL_SHA256
&&
574 (evp
= EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA256")))
575 *enc
= evp
, *md
= NULL
;
576 else if (c
->algorithm_enc
== SSL_AES256
&&
577 c
->algorithm_mac
== SSL_SHA256
&&
578 (evp
= EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA256")))
579 *enc
= evp
, *md
= NULL
;
586 const EVP_MD
*ssl_md(int idx
)
588 idx
&= SSL_HANDSHAKE_MAC_MASK
;
589 if (idx
< 0 || idx
>= SSL_MD_NUM_IDX
)
591 return ssl_digest_methods
[idx
];
594 const EVP_MD
*ssl_handshake_md(SSL
*s
)
596 return ssl_md(ssl_get_algorithm2(s
));
599 const EVP_MD
*ssl_prf_md(SSL
*s
)
601 return ssl_md(ssl_get_algorithm2(s
) >> TLS1_PRF_DGST_SHIFT
);
604 #define ITEM_SEP(a) \
605 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
607 static void ll_append_tail(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
614 if (curr
->prev
!= NULL
)
615 curr
->prev
->next
= curr
->next
;
616 if (curr
->next
!= NULL
)
617 curr
->next
->prev
= curr
->prev
;
618 (*tail
)->next
= curr
;
624 static void ll_append_head(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
631 if (curr
->next
!= NULL
)
632 curr
->next
->prev
= curr
->prev
;
633 if (curr
->prev
!= NULL
)
634 curr
->prev
->next
= curr
->next
;
635 (*head
)->prev
= curr
;
641 static void ssl_cipher_collect_ciphers(const SSL_METHOD
*ssl_method
,
643 uint32_t disabled_mkey
,
644 uint32_t disabled_auth
,
645 uint32_t disabled_enc
,
646 uint32_t disabled_mac
,
647 CIPHER_ORDER
*co_list
,
648 CIPHER_ORDER
**head_p
,
649 CIPHER_ORDER
**tail_p
)
655 * We have num_of_ciphers descriptions compiled in, depending on the
656 * method selected (SSLv3, TLSv1 etc).
657 * These will later be sorted in a linked list with at most num
661 /* Get the initial list of ciphers */
662 co_list_num
= 0; /* actual count of ciphers */
663 for (i
= 0; i
< num_of_ciphers
; i
++) {
664 c
= ssl_method
->get_cipher(i
);
665 /* drop those that use any of that is not available */
666 if (c
== NULL
|| !c
->valid
)
668 if ((c
->algorithm_mkey
& disabled_mkey
) ||
669 (c
->algorithm_auth
& disabled_auth
) ||
670 (c
->algorithm_enc
& disabled_enc
) ||
671 (c
->algorithm_mac
& disabled_mac
))
673 if (((ssl_method
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
) == 0) &&
676 if (((ssl_method
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
) != 0) &&
680 co_list
[co_list_num
].cipher
= c
;
681 co_list
[co_list_num
].next
= NULL
;
682 co_list
[co_list_num
].prev
= NULL
;
683 co_list
[co_list_num
].active
= 0;
688 * Prepare linked list from list entries
690 if (co_list_num
> 0) {
691 co_list
[0].prev
= NULL
;
693 if (co_list_num
> 1) {
694 co_list
[0].next
= &co_list
[1];
696 for (i
= 1; i
< co_list_num
- 1; i
++) {
697 co_list
[i
].prev
= &co_list
[i
- 1];
698 co_list
[i
].next
= &co_list
[i
+ 1];
701 co_list
[co_list_num
- 1].prev
= &co_list
[co_list_num
- 2];
704 co_list
[co_list_num
- 1].next
= NULL
;
706 *head_p
= &co_list
[0];
707 *tail_p
= &co_list
[co_list_num
- 1];
711 static void ssl_cipher_collect_aliases(const SSL_CIPHER
**ca_list
,
712 int num_of_group_aliases
,
713 uint32_t disabled_mkey
,
714 uint32_t disabled_auth
,
715 uint32_t disabled_enc
,
716 uint32_t disabled_mac
,
719 CIPHER_ORDER
*ciph_curr
;
720 const SSL_CIPHER
**ca_curr
;
722 uint32_t mask_mkey
= ~disabled_mkey
;
723 uint32_t mask_auth
= ~disabled_auth
;
724 uint32_t mask_enc
= ~disabled_enc
;
725 uint32_t mask_mac
= ~disabled_mac
;
728 * First, add the real ciphers as already collected
732 while (ciph_curr
!= NULL
) {
733 *ca_curr
= ciph_curr
->cipher
;
735 ciph_curr
= ciph_curr
->next
;
739 * Now we add the available ones from the cipher_aliases[] table.
740 * They represent either one or more algorithms, some of which
741 * in any affected category must be supported (set in enabled_mask),
742 * or represent a cipher strength value (will be added in any case because algorithms=0).
744 for (i
= 0; i
< num_of_group_aliases
; i
++) {
745 uint32_t algorithm_mkey
= cipher_aliases
[i
].algorithm_mkey
;
746 uint32_t algorithm_auth
= cipher_aliases
[i
].algorithm_auth
;
747 uint32_t algorithm_enc
= cipher_aliases
[i
].algorithm_enc
;
748 uint32_t algorithm_mac
= cipher_aliases
[i
].algorithm_mac
;
751 if ((algorithm_mkey
& mask_mkey
) == 0)
755 if ((algorithm_auth
& mask_auth
) == 0)
759 if ((algorithm_enc
& mask_enc
) == 0)
763 if ((algorithm_mac
& mask_mac
) == 0)
766 *ca_curr
= (SSL_CIPHER
*)(cipher_aliases
+ i
);
770 *ca_curr
= NULL
; /* end of list */
773 static void ssl_cipher_apply_rule(uint32_t cipher_id
, uint32_t alg_mkey
,
774 uint32_t alg_auth
, uint32_t alg_enc
,
775 uint32_t alg_mac
, int min_tls
,
776 uint32_t algo_strength
, int rule
,
777 int32_t strength_bits
, CIPHER_ORDER
**head_p
,
778 CIPHER_ORDER
**tail_p
)
780 CIPHER_ORDER
*head
, *tail
, *curr
, *next
, *last
;
781 const SSL_CIPHER
*cp
;
786 "Applying rule %d with %08x/%08x/%08x/%08x/%08x %08x (%d)\n",
787 rule
, alg_mkey
, alg_auth
, alg_enc
, alg_mac
, min_tls
,
788 algo_strength
, strength_bits
);
791 if (rule
== CIPHER_DEL
|| rule
== CIPHER_BUMP
)
792 reverse
= 1; /* needed to maintain sorting between currently
816 next
= reverse
? curr
->prev
: curr
->next
;
821 * Selection criteria is either the value of strength_bits
822 * or the algorithms used.
824 if (strength_bits
>= 0) {
825 if (strength_bits
!= cp
->strength_bits
)
830 "\nName: %s:\nAlgo = %08x/%08x/%08x/%08x/%08x Algo_strength = %08x\n",
831 cp
->name
, cp
->algorithm_mkey
, cp
->algorithm_auth
,
832 cp
->algorithm_enc
, cp
->algorithm_mac
, cp
->min_tls
,
835 if (cipher_id
!= 0 && (cipher_id
!= cp
->id
))
837 if (alg_mkey
&& !(alg_mkey
& cp
->algorithm_mkey
))
839 if (alg_auth
&& !(alg_auth
& cp
->algorithm_auth
))
841 if (alg_enc
&& !(alg_enc
& cp
->algorithm_enc
))
843 if (alg_mac
&& !(alg_mac
& cp
->algorithm_mac
))
845 if (min_tls
&& (min_tls
!= cp
->min_tls
))
847 if ((algo_strength
& SSL_STRONG_MASK
)
848 && !(algo_strength
& SSL_STRONG_MASK
& cp
->algo_strength
))
850 if ((algo_strength
& SSL_DEFAULT_MASK
)
851 && !(algo_strength
& SSL_DEFAULT_MASK
& cp
->algo_strength
))
856 fprintf(stderr
, "Action = %d\n", rule
);
859 /* add the cipher if it has not been added yet. */
860 if (rule
== CIPHER_ADD
) {
863 ll_append_tail(&head
, curr
, &tail
);
867 /* Move the added cipher to this location */
868 else if (rule
== CIPHER_ORD
) {
871 ll_append_tail(&head
, curr
, &tail
);
873 } else if (rule
== CIPHER_DEL
) {
877 * most recently deleted ciphersuites get best positions for
878 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
879 * in reverse to maintain the order)
881 ll_append_head(&head
, curr
, &tail
);
884 } else if (rule
== CIPHER_BUMP
) {
886 ll_append_head(&head
, curr
, &tail
);
887 } else if (rule
== CIPHER_KILL
) {
892 curr
->prev
->next
= curr
->next
;
896 if (curr
->next
!= NULL
)
897 curr
->next
->prev
= curr
->prev
;
898 if (curr
->prev
!= NULL
)
899 curr
->prev
->next
= curr
->next
;
909 static int ssl_cipher_strength_sort(CIPHER_ORDER
**head_p
,
910 CIPHER_ORDER
**tail_p
)
912 int32_t max_strength_bits
;
917 * This routine sorts the ciphers with descending strength. The sorting
918 * must keep the pre-sorted sequence, so we apply the normal sorting
919 * routine as '+' movement to the end of the list.
921 max_strength_bits
= 0;
923 while (curr
!= NULL
) {
924 if (curr
->active
&& (curr
->cipher
->strength_bits
> max_strength_bits
))
925 max_strength_bits
= curr
->cipher
->strength_bits
;
929 number_uses
= OPENSSL_zalloc(sizeof(int) * (max_strength_bits
+ 1));
930 if (number_uses
== NULL
) {
931 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT
, ERR_R_MALLOC_FAILURE
);
936 * Now find the strength_bits values actually used
939 while (curr
!= NULL
) {
941 number_uses
[curr
->cipher
->strength_bits
]++;
945 * Go through the list of used strength_bits values in descending
948 for (i
= max_strength_bits
; i
>= 0; i
--)
949 if (number_uses
[i
] > 0)
950 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD
, i
, head_p
,
953 OPENSSL_free(number_uses
);
957 static int ssl_cipher_process_rulestr(const char *rule_str
,
958 CIPHER_ORDER
**head_p
,
959 CIPHER_ORDER
**tail_p
,
960 const SSL_CIPHER
**ca_list
, CERT
*c
)
962 uint32_t alg_mkey
, alg_auth
, alg_enc
, alg_mac
, algo_strength
;
965 int j
, multi
, found
, rule
, retval
, ok
, buflen
;
966 uint32_t cipher_id
= 0;
979 } else if (ch
== '+') {
982 } else if (ch
== '!') {
985 } else if (ch
== '@') {
986 rule
= CIPHER_SPECIAL
;
1008 #ifndef CHARSET_EBCDIC
1009 while (((ch
>= 'A') && (ch
<= 'Z')) ||
1010 ((ch
>= '0') && (ch
<= '9')) ||
1011 ((ch
>= 'a') && (ch
<= 'z')) ||
1012 (ch
== '-') || (ch
== '.') || (ch
== '='))
1014 while (isalnum((unsigned char)ch
) || (ch
== '-') || (ch
== '.')
1024 * We hit something we cannot deal with,
1025 * it is no command or separator nor
1026 * alphanumeric, so we call this an error.
1028 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
, SSL_R_INVALID_COMMAND
);
1034 if (rule
== CIPHER_SPECIAL
) {
1035 found
= 0; /* unused -- avoid compiler warning */
1036 break; /* special treatment */
1039 /* check for multi-part specification */
1048 * Now search for the cipher alias in the ca_list. Be careful
1049 * with the strncmp, because the "buflen" limitation
1050 * will make the rule "ADH:SOME" and the cipher
1051 * "ADH-MY-CIPHER" look like a match for buflen=3.
1052 * So additionally check whether the cipher name found
1053 * has the correct length. We can save a strlen() call:
1054 * just checking for the '\0' at the right place is
1055 * sufficient, we have to strncmp() anyway. (We cannot
1056 * use strcmp(), because buf is not '\0' terminated.)
1060 while (ca_list
[j
]) {
1061 if (strncmp(buf
, ca_list
[j
]->name
, buflen
) == 0
1062 && (ca_list
[j
]->name
[buflen
] == '\0')) {
1070 break; /* ignore this entry */
1072 if (ca_list
[j
]->algorithm_mkey
) {
1074 alg_mkey
&= ca_list
[j
]->algorithm_mkey
;
1080 alg_mkey
= ca_list
[j
]->algorithm_mkey
;
1084 if (ca_list
[j
]->algorithm_auth
) {
1086 alg_auth
&= ca_list
[j
]->algorithm_auth
;
1092 alg_auth
= ca_list
[j
]->algorithm_auth
;
1096 if (ca_list
[j
]->algorithm_enc
) {
1098 alg_enc
&= ca_list
[j
]->algorithm_enc
;
1104 alg_enc
= ca_list
[j
]->algorithm_enc
;
1108 if (ca_list
[j
]->algorithm_mac
) {
1110 alg_mac
&= ca_list
[j
]->algorithm_mac
;
1116 alg_mac
= ca_list
[j
]->algorithm_mac
;
1120 if (ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
) {
1121 if (algo_strength
& SSL_STRONG_MASK
) {
1123 (ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
) |
1125 if (!(algo_strength
& SSL_STRONG_MASK
)) {
1130 algo_strength
= ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
;
1134 if (ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
) {
1135 if (algo_strength
& SSL_DEFAULT_MASK
) {
1137 (ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
) |
1139 if (!(algo_strength
& SSL_DEFAULT_MASK
)) {
1145 ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
;
1149 if (ca_list
[j
]->valid
) {
1151 * explicit ciphersuite found; its protocol version does not
1152 * become part of the search pattern!
1155 cipher_id
= ca_list
[j
]->id
;
1158 * not an explicit ciphersuite; only in this case, the
1159 * protocol version is considered part of the search pattern
1162 if (ca_list
[j
]->min_tls
) {
1163 if (min_tls
!= 0 && min_tls
!= ca_list
[j
]->min_tls
) {
1167 min_tls
= ca_list
[j
]->min_tls
;
1177 * Ok, we have the rule, now apply it
1179 if (rule
== CIPHER_SPECIAL
) { /* special command */
1181 if ((buflen
== 8) && strncmp(buf
, "STRENGTH", 8) == 0) {
1182 ok
= ssl_cipher_strength_sort(head_p
, tail_p
);
1183 } else if (buflen
== 10 && strncmp(buf
, "SECLEVEL=", 9) == 0) {
1184 int level
= buf
[9] - '0';
1185 if (level
< 0 || level
> 5) {
1186 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
1187 SSL_R_INVALID_COMMAND
);
1189 c
->sec_level
= level
;
1193 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
, SSL_R_INVALID_COMMAND
);
1198 * We do not support any "multi" options
1199 * together with "@", so throw away the
1200 * rest of the command, if any left, until
1201 * end or ':' is found.
1203 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1206 ssl_cipher_apply_rule(cipher_id
,
1207 alg_mkey
, alg_auth
, alg_enc
, alg_mac
,
1208 min_tls
, algo_strength
, rule
, -1, head_p
,
1211 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1221 #ifndef OPENSSL_NO_EC
1222 static int check_suiteb_cipher_list(const SSL_METHOD
*meth
, CERT
*c
,
1223 const char **prule_str
)
1225 unsigned int suiteb_flags
= 0, suiteb_comb2
= 0;
1226 if (strncmp(*prule_str
, "SUITEB128ONLY", 13) == 0) {
1227 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS_ONLY
;
1228 } else if (strncmp(*prule_str
, "SUITEB128C2", 11) == 0) {
1230 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1231 } else if (strncmp(*prule_str
, "SUITEB128", 9) == 0) {
1232 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1233 } else if (strncmp(*prule_str
, "SUITEB192", 9) == 0) {
1234 suiteb_flags
= SSL_CERT_FLAG_SUITEB_192_LOS
;
1238 c
->cert_flags
&= ~SSL_CERT_FLAG_SUITEB_128_LOS
;
1239 c
->cert_flags
|= suiteb_flags
;
1241 suiteb_flags
= c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
;
1246 /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */
1248 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_TLS1_2_CIPHERS
)) {
1249 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST
,
1250 SSL_R_AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE
);
1253 # ifndef OPENSSL_NO_EC
1254 switch (suiteb_flags
) {
1255 case SSL_CERT_FLAG_SUITEB_128_LOS
:
1257 *prule_str
= "ECDHE-ECDSA-AES256-GCM-SHA384";
1260 "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384";
1262 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY
:
1263 *prule_str
= "ECDHE-ECDSA-AES128-GCM-SHA256";
1265 case SSL_CERT_FLAG_SUITEB_192_LOS
:
1266 *prule_str
= "ECDHE-ECDSA-AES256-GCM-SHA384";
1271 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST
, SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE
);
1277 static int ciphersuite_cb(const char *elem
, int len
, void *arg
)
1279 STACK_OF(SSL_CIPHER
) *ciphersuites
= (STACK_OF(SSL_CIPHER
) *)arg
;
1280 const SSL_CIPHER
*cipher
;
1281 /* Arbitrary sized temp buffer for the cipher name. Should be big enough */
1284 if (len
> (int)(sizeof(name
) - 1)) {
1285 SSLerr(SSL_F_CIPHERSUITE_CB
, SSL_R_NO_CIPHER_MATCH
);
1289 memcpy(name
, elem
, len
);
1292 cipher
= ssl3_get_cipher_by_std_name(name
);
1293 if (cipher
== NULL
) {
1294 SSLerr(SSL_F_CIPHERSUITE_CB
, SSL_R_NO_CIPHER_MATCH
);
1298 if (!sk_SSL_CIPHER_push(ciphersuites
, cipher
)) {
1299 SSLerr(SSL_F_CIPHERSUITE_CB
, ERR_R_INTERNAL_ERROR
);
1306 static __owur
int set_ciphersuites(STACK_OF(SSL_CIPHER
) **currciphers
, const char *str
)
1308 STACK_OF(SSL_CIPHER
) *newciphers
= sk_SSL_CIPHER_new_null();
1310 if (newciphers
== NULL
)
1313 /* Parse the list. We explicitly allow an empty list */
1315 && !CONF_parse_list(str
, ':', 1, ciphersuite_cb
, newciphers
)) {
1316 sk_SSL_CIPHER_free(newciphers
);
1319 sk_SSL_CIPHER_free(*currciphers
);
1320 *currciphers
= newciphers
;
1325 static int update_cipher_list_by_id(STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1326 STACK_OF(SSL_CIPHER
) *cipherstack
)
1328 STACK_OF(SSL_CIPHER
) *tmp_cipher_list
= sk_SSL_CIPHER_dup(cipherstack
);
1330 if (tmp_cipher_list
== NULL
) {
1334 sk_SSL_CIPHER_free(*cipher_list_by_id
);
1335 *cipher_list_by_id
= tmp_cipher_list
;
1337 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id
, ssl_cipher_ptr_id_cmp
);
1338 sk_SSL_CIPHER_sort(*cipher_list_by_id
);
1343 static int update_cipher_list(STACK_OF(SSL_CIPHER
) **cipher_list
,
1344 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1345 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
)
1348 STACK_OF(SSL_CIPHER
) *tmp_cipher_list
= sk_SSL_CIPHER_dup(*cipher_list
);
1350 if (tmp_cipher_list
== NULL
)
1354 * Delete any existing TLSv1.3 ciphersuites. These are always first in the
1357 while (sk_SSL_CIPHER_num(tmp_cipher_list
) > 0
1358 && sk_SSL_CIPHER_value(tmp_cipher_list
, 0)->min_tls
1360 sk_SSL_CIPHER_delete(tmp_cipher_list
, 0);
1362 /* Insert the new TLSv1.3 ciphersuites */
1363 for (i
= 0; i
< sk_SSL_CIPHER_num(tls13_ciphersuites
); i
++)
1364 sk_SSL_CIPHER_insert(tmp_cipher_list
,
1365 sk_SSL_CIPHER_value(tls13_ciphersuites
, i
), i
);
1367 if (!update_cipher_list_by_id(cipher_list_by_id
, tmp_cipher_list
))
1370 sk_SSL_CIPHER_free(*cipher_list
);
1371 *cipher_list
= tmp_cipher_list
;
1376 int SSL_CTX_set_ciphersuites(SSL_CTX
*ctx
, const char *str
)
1378 int ret
= set_ciphersuites(&(ctx
->tls13_ciphersuites
), str
);
1380 if (ret
&& ctx
->cipher_list
!= NULL
) {
1381 /* We already have a cipher_list, so we need to update it */
1382 return update_cipher_list(&ctx
->cipher_list
, &ctx
->cipher_list_by_id
,
1383 ctx
->tls13_ciphersuites
);
1389 int SSL_set_ciphersuites(SSL
*s
, const char *str
)
1391 int ret
= set_ciphersuites(&(s
->tls13_ciphersuites
), str
);
1393 if (ret
&& s
->cipher_list
!= NULL
) {
1394 /* We already have a cipher_list, so we need to update it */
1395 return update_cipher_list(&s
->cipher_list
, &s
->cipher_list_by_id
,
1396 s
->tls13_ciphersuites
);
1402 STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*ssl_method
,
1403 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
,
1404 STACK_OF(SSL_CIPHER
) **cipher_list
,
1405 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1406 const char *rule_str
,
1409 int ok
, num_of_ciphers
, num_of_alias_max
, num_of_group_aliases
, i
;
1410 uint32_t disabled_mkey
, disabled_auth
, disabled_enc
, disabled_mac
;
1411 STACK_OF(SSL_CIPHER
) *cipherstack
;
1413 CIPHER_ORDER
*co_list
= NULL
, *head
= NULL
, *tail
= NULL
, *curr
;
1414 const SSL_CIPHER
**ca_list
= NULL
;
1417 * Return with error if nothing to do.
1419 if (rule_str
== NULL
|| cipher_list
== NULL
|| cipher_list_by_id
== NULL
)
1421 #ifndef OPENSSL_NO_EC
1422 if (!check_suiteb_cipher_list(ssl_method
, c
, &rule_str
))
1427 * To reduce the work to do we only want to process the compiled
1428 * in algorithms, so we first get the mask of disabled ciphers.
1431 disabled_mkey
= disabled_mkey_mask
;
1432 disabled_auth
= disabled_auth_mask
;
1433 disabled_enc
= disabled_enc_mask
;
1434 disabled_mac
= disabled_mac_mask
;
1437 * Now we have to collect the available ciphers from the compiled
1438 * in ciphers. We cannot get more than the number compiled in, so
1439 * it is used for allocation.
1441 num_of_ciphers
= ssl_method
->num_ciphers();
1443 co_list
= OPENSSL_malloc(sizeof(*co_list
) * num_of_ciphers
);
1444 if (co_list
== NULL
) {
1445 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
1446 return NULL
; /* Failure */
1449 ssl_cipher_collect_ciphers(ssl_method
, num_of_ciphers
,
1450 disabled_mkey
, disabled_auth
, disabled_enc
,
1451 disabled_mac
, co_list
, &head
, &tail
);
1453 /* Now arrange all ciphers by preference. */
1456 * Everything else being equal, prefer ephemeral ECDH over other key
1457 * exchange mechanisms.
1458 * For consistency, prefer ECDSA over RSA (though this only matters if the
1459 * server has both certificates, and is using the DEFAULT, or a client
1462 ssl_cipher_apply_rule(0, SSL_kECDHE
, SSL_aECDSA
, 0, 0, 0, 0, CIPHER_ADD
,
1464 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
,
1466 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
,
1469 /* Within each strength group, we prefer GCM over CHACHA... */
1470 ssl_cipher_apply_rule(0, 0, 0, SSL_AESGCM
, 0, 0, 0, CIPHER_ADD
, -1,
1472 ssl_cipher_apply_rule(0, 0, 0, SSL_CHACHA20
, 0, 0, 0, CIPHER_ADD
, -1,
1476 * ...and generally, our preferred cipher is AES.
1477 * Note that AEADs will be bumped to take preference after sorting by
1480 ssl_cipher_apply_rule(0, 0, 0, SSL_AES
^ SSL_AESGCM
, 0, 0, 0, CIPHER_ADD
,
1483 /* Temporarily enable everything else for sorting */
1484 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
, &tail
);
1486 /* Low priority for MD5 */
1487 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5
, 0, 0, CIPHER_ORD
, -1, &head
,
1491 * Move anonymous ciphers to the end. Usually, these will remain
1492 * disabled. (For applications that allow them, they aren't too bad, but
1493 * we prefer authenticated ciphers.)
1495 ssl_cipher_apply_rule(0, 0, SSL_aNULL
, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1498 ssl_cipher_apply_rule(0, SSL_kRSA
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1500 ssl_cipher_apply_rule(0, SSL_kPSK
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1503 /* RC4 is sort-of broken -- move to the end */
1504 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4
, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1508 * Now sort by symmetric encryption strength. The above ordering remains
1509 * in force within each class
1511 if (!ssl_cipher_strength_sort(&head
, &tail
)) {
1512 OPENSSL_free(co_list
);
1517 * Partially overrule strength sort to prefer TLS 1.2 ciphers/PRFs.
1518 * TODO(openssl-team): is there an easier way to accomplish all this?
1520 ssl_cipher_apply_rule(0, 0, 0, 0, 0, TLS1_2_VERSION
, 0, CIPHER_BUMP
, -1,
1524 * Irrespective of strength, enforce the following order:
1525 * (EC)DHE + AEAD > (EC)DHE > rest of AEAD > rest.
1526 * Within each group, ciphers remain sorted by strength and previous
1531 * 4) TLS 1.2 > legacy
1533 * Because we now bump ciphers to the top of the list, we proceed in
1534 * reverse order of preference.
1536 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_AEAD
, 0, 0, CIPHER_BUMP
, -1,
1538 ssl_cipher_apply_rule(0, SSL_kDHE
| SSL_kECDHE
, 0, 0, 0, 0, 0,
1539 CIPHER_BUMP
, -1, &head
, &tail
);
1540 ssl_cipher_apply_rule(0, SSL_kDHE
| SSL_kECDHE
, 0, 0, SSL_AEAD
, 0, 0,
1541 CIPHER_BUMP
, -1, &head
, &tail
);
1543 /* Now disable everything (maintaining the ordering!) */
1544 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
, &tail
);
1547 * We also need cipher aliases for selecting based on the rule_str.
1548 * There might be two types of entries in the rule_str: 1) names
1549 * of ciphers themselves 2) aliases for groups of ciphers.
1550 * For 1) we need the available ciphers and for 2) the cipher
1551 * groups of cipher_aliases added together in one list (otherwise
1552 * we would be happy with just the cipher_aliases table).
1554 num_of_group_aliases
= OSSL_NELEM(cipher_aliases
);
1555 num_of_alias_max
= num_of_ciphers
+ num_of_group_aliases
+ 1;
1556 ca_list
= OPENSSL_malloc(sizeof(*ca_list
) * num_of_alias_max
);
1557 if (ca_list
== NULL
) {
1558 OPENSSL_free(co_list
);
1559 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
1560 return NULL
; /* Failure */
1562 ssl_cipher_collect_aliases(ca_list
, num_of_group_aliases
,
1563 disabled_mkey
, disabled_auth
, disabled_enc
,
1564 disabled_mac
, head
);
1567 * If the rule_string begins with DEFAULT, apply the default rule
1568 * before using the (possibly available) additional rules.
1572 if (strncmp(rule_str
, "DEFAULT", 7) == 0) {
1573 ok
= ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST
,
1574 &head
, &tail
, ca_list
, c
);
1580 if (ok
&& (strlen(rule_p
) > 0))
1581 ok
= ssl_cipher_process_rulestr(rule_p
, &head
, &tail
, ca_list
, c
);
1583 OPENSSL_free(ca_list
); /* Not needed anymore */
1585 if (!ok
) { /* Rule processing failure */
1586 OPENSSL_free(co_list
);
1591 * Allocate new "cipherstack" for the result, return with error
1592 * if we cannot get one.
1594 if ((cipherstack
= sk_SSL_CIPHER_new_null()) == NULL
) {
1595 OPENSSL_free(co_list
);
1599 /* Add TLSv1.3 ciphers first - we always prefer those if possible */
1600 for (i
= 0; i
< sk_SSL_CIPHER_num(tls13_ciphersuites
); i
++) {
1601 if (!sk_SSL_CIPHER_push(cipherstack
,
1602 sk_SSL_CIPHER_value(tls13_ciphersuites
, i
))) {
1603 sk_SSL_CIPHER_free(cipherstack
);
1609 * The cipher selection for the list is done. The ciphers are added
1610 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1612 for (curr
= head
; curr
!= NULL
; curr
= curr
->next
) {
1614 if (!sk_SSL_CIPHER_push(cipherstack
, curr
->cipher
)) {
1615 OPENSSL_free(co_list
);
1616 sk_SSL_CIPHER_free(cipherstack
);
1620 fprintf(stderr
, "<%s>\n", curr
->cipher
->name
);
1624 OPENSSL_free(co_list
); /* Not needed any longer */
1626 if (!update_cipher_list_by_id(cipher_list_by_id
, cipherstack
)) {
1627 sk_SSL_CIPHER_free(cipherstack
);
1630 sk_SSL_CIPHER_free(*cipher_list
);
1631 *cipher_list
= cipherstack
;
1636 char *SSL_CIPHER_description(const SSL_CIPHER
*cipher
, char *buf
, int len
)
1639 const char *kx
, *au
, *enc
, *mac
;
1640 uint32_t alg_mkey
, alg_auth
, alg_enc
, alg_mac
;
1641 static const char *format
= "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s\n";
1645 if ((buf
= OPENSSL_malloc(len
)) == NULL
) {
1646 SSLerr(SSL_F_SSL_CIPHER_DESCRIPTION
, ERR_R_MALLOC_FAILURE
);
1649 } else if (len
< 128) {
1653 alg_mkey
= cipher
->algorithm_mkey
;
1654 alg_auth
= cipher
->algorithm_auth
;
1655 alg_enc
= cipher
->algorithm_enc
;
1656 alg_mac
= cipher
->algorithm_mac
;
1658 ver
= ssl_protocol_to_string(cipher
->min_tls
);
1717 /* New GOST ciphersuites have both SSL_aGOST12 and SSL_aGOST01 bits */
1718 case (SSL_aGOST12
| SSL_aGOST01
):
1755 enc
= "AESGCM(128)";
1758 enc
= "AESGCM(256)";
1761 enc
= "AESCCM(128)";
1764 enc
= "AESCCM(256)";
1766 case SSL_AES128CCM8
:
1767 enc
= "AESCCM8(128)";
1769 case SSL_AES256CCM8
:
1770 enc
= "AESCCM8(256)";
1772 case SSL_CAMELLIA128
:
1773 enc
= "Camellia(128)";
1775 case SSL_CAMELLIA256
:
1776 enc
= "Camellia(256)";
1778 case SSL_ARIA128GCM
:
1779 enc
= "ARIAGCM(128)";
1781 case SSL_ARIA256GCM
:
1782 enc
= "ARIAGCM(256)";
1787 case SSL_eGOST2814789CNT
:
1788 case SSL_eGOST2814789CNT12
:
1789 enc
= "GOST89(256)";
1791 case SSL_CHACHA20POLY1305
:
1792 enc
= "CHACHA20/POLY1305(256)";
1816 case SSL_GOST89MAC12
:
1822 case SSL_GOST12_256
:
1823 case SSL_GOST12_512
:
1831 BIO_snprintf(buf
, len
, format
, cipher
->name
, ver
, kx
, au
, enc
, mac
);
1836 const char *SSL_CIPHER_get_version(const SSL_CIPHER
*c
)
1842 * Backwards-compatibility crutch. In almost all contexts we report TLS
1843 * 1.0 as "TLSv1", but for ciphers we report "TLSv1.0".
1845 if (c
->min_tls
== TLS1_VERSION
)
1847 return ssl_protocol_to_string(c
->min_tls
);
1850 /* return the actual cipher being used */
1851 const char *SSL_CIPHER_get_name(const SSL_CIPHER
*c
)
1858 /* return the actual cipher being used in RFC standard name */
1859 const char *SSL_CIPHER_standard_name(const SSL_CIPHER
*c
)
1866 /* return the OpenSSL name based on given RFC standard name */
1867 const char *OPENSSL_cipher_name(const char *stdname
)
1869 const SSL_CIPHER
*c
;
1871 if (stdname
== NULL
)
1873 c
= ssl3_get_cipher_by_std_name(stdname
);
1874 return SSL_CIPHER_get_name(c
);
1877 /* number of bits for symmetric cipher */
1878 int SSL_CIPHER_get_bits(const SSL_CIPHER
*c
, int *alg_bits
)
1883 if (alg_bits
!= NULL
)
1884 *alg_bits
= (int)c
->alg_bits
;
1885 ret
= (int)c
->strength_bits
;
1890 uint32_t SSL_CIPHER_get_id(const SSL_CIPHER
*c
)
1895 uint16_t SSL_CIPHER_get_protocol_id(const SSL_CIPHER
*c
)
1897 return c
->id
& 0xFFFF;
1900 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
)
1905 if ((n
== 0) || (sk
== NULL
))
1907 nn
= sk_SSL_COMP_num(sk
);
1908 for (i
= 0; i
< nn
; i
++) {
1909 ctmp
= sk_SSL_COMP_value(sk
, i
);
1916 #ifdef OPENSSL_NO_COMP
1917 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1922 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1928 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1934 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1936 load_builtin_compressions();
1937 return ssl_comp_methods
;
1940 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1943 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1944 ssl_comp_methods
= meths
;
1948 static void cmeth_free(SSL_COMP
*cm
)
1953 void ssl_comp_free_compression_methods_int(void)
1955 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1956 ssl_comp_methods
= NULL
;
1957 sk_SSL_COMP_pop_free(old_meths
, cmeth_free
);
1960 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1964 if (cm
== NULL
|| COMP_get_type(cm
) == NID_undef
)
1968 * According to draft-ietf-tls-compression-04.txt, the
1969 * compression number ranges should be the following:
1971 * 0 to 63: methods defined by the IETF
1972 * 64 to 192: external party methods assigned by IANA
1973 * 193 to 255: reserved for private use
1975 if (id
< 193 || id
> 255) {
1976 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,
1977 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE
);
1981 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE
);
1982 comp
= OPENSSL_malloc(sizeof(*comp
));
1984 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE
);
1985 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
, ERR_R_MALLOC_FAILURE
);
1991 load_builtin_compressions();
1992 if (ssl_comp_methods
&& sk_SSL_COMP_find(ssl_comp_methods
, comp
) >= 0) {
1994 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE
);
1995 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,
1996 SSL_R_DUPLICATE_COMPRESSION_ID
);
1999 if (ssl_comp_methods
== NULL
|| !sk_SSL_COMP_push(ssl_comp_methods
, comp
)) {
2001 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE
);
2002 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
, ERR_R_MALLOC_FAILURE
);
2005 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE
);
2010 const char *SSL_COMP_get_name(const COMP_METHOD
*comp
)
2012 #ifndef OPENSSL_NO_COMP
2013 return comp
? COMP_get_name(comp
) : NULL
;
2019 const char *SSL_COMP_get0_name(const SSL_COMP
*comp
)
2021 #ifndef OPENSSL_NO_COMP
2028 int SSL_COMP_get_id(const SSL_COMP
*comp
)
2030 #ifndef OPENSSL_NO_COMP
2037 const SSL_CIPHER
*ssl_get_cipher_by_char(SSL
*ssl
, const unsigned char *ptr
,
2040 const SSL_CIPHER
*c
= ssl
->method
->get_cipher_by_char(ptr
);
2042 if (c
== NULL
|| (!all
&& c
->valid
== 0))
2047 const SSL_CIPHER
*SSL_CIPHER_find(SSL
*ssl
, const unsigned char *ptr
)
2049 return ssl
->method
->get_cipher_by_char(ptr
);
2052 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER
*c
)
2057 i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, c
->algorithm_enc
);
2060 return ssl_cipher_table_cipher
[i
].nid
;
2063 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER
*c
)
2065 int i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
2069 return ssl_cipher_table_mac
[i
].nid
;
2072 int SSL_CIPHER_get_kx_nid(const SSL_CIPHER
*c
)
2074 int i
= ssl_cipher_info_lookup(ssl_cipher_table_kx
, c
->algorithm_mkey
);
2078 return ssl_cipher_table_kx
[i
].nid
;
2081 int SSL_CIPHER_get_auth_nid(const SSL_CIPHER
*c
)
2083 int i
= ssl_cipher_info_lookup(ssl_cipher_table_auth
, c
->algorithm_auth
);
2087 return ssl_cipher_table_auth
[i
].nid
;
2090 const EVP_MD
*SSL_CIPHER_get_handshake_digest(const SSL_CIPHER
*c
)
2092 int idx
= c
->algorithm2
& SSL_HANDSHAKE_MAC_MASK
;
2094 if (idx
< 0 || idx
>= SSL_MD_NUM_IDX
)
2096 return ssl_digest_methods
[idx
];
2099 int SSL_CIPHER_is_aead(const SSL_CIPHER
*c
)
2101 return (c
->algorithm_mac
& SSL_AEAD
) ? 1 : 0;
2104 int ssl_cipher_get_overhead(const SSL_CIPHER
*c
, size_t *mac_overhead
,
2105 size_t *int_overhead
, size_t *blocksize
,
2106 size_t *ext_overhead
)
2108 size_t mac
= 0, in
= 0, blk
= 0, out
= 0;
2110 /* Some hard-coded numbers for the CCM/Poly1305 MAC overhead
2111 * because there are no handy #defines for those. */
2112 if (c
->algorithm_enc
& (SSL_AESGCM
| SSL_ARIAGCM
)) {
2113 out
= EVP_GCM_TLS_EXPLICIT_IV_LEN
+ EVP_GCM_TLS_TAG_LEN
;
2114 } else if (c
->algorithm_enc
& (SSL_AES128CCM
| SSL_AES256CCM
)) {
2115 out
= EVP_CCM_TLS_EXPLICIT_IV_LEN
+ 16;
2116 } else if (c
->algorithm_enc
& (SSL_AES128CCM8
| SSL_AES256CCM8
)) {
2117 out
= EVP_CCM_TLS_EXPLICIT_IV_LEN
+ 8;
2118 } else if (c
->algorithm_enc
& SSL_CHACHA20POLY1305
) {
2120 } else if (c
->algorithm_mac
& SSL_AEAD
) {
2121 /* We're supposed to have handled all the AEAD modes above */
2124 /* Non-AEAD modes. Calculate MAC/cipher overhead separately */
2125 int digest_nid
= SSL_CIPHER_get_digest_nid(c
);
2126 const EVP_MD
*e_md
= EVP_get_digestbynid(digest_nid
);
2131 mac
= EVP_MD_size(e_md
);
2132 if (c
->algorithm_enc
!= SSL_eNULL
) {
2133 int cipher_nid
= SSL_CIPHER_get_cipher_nid(c
);
2134 const EVP_CIPHER
*e_ciph
= EVP_get_cipherbynid(cipher_nid
);
2136 /* If it wasn't AEAD or SSL_eNULL, we expect it to be a
2137 known CBC cipher. */
2138 if (e_ciph
== NULL
||
2139 EVP_CIPHER_mode(e_ciph
) != EVP_CIPH_CBC_MODE
)
2142 in
= 1; /* padding length byte */
2143 out
= EVP_CIPHER_iv_length(e_ciph
);
2144 blk
= EVP_CIPHER_block_size(e_ciph
);
2148 *mac_overhead
= mac
;
2151 *ext_overhead
= out
;
2156 int ssl_cert_is_disabled(size_t idx
)
2158 const SSL_CERT_LOOKUP
*cl
= ssl_cert_lookup_by_idx(idx
);
2160 if (cl
== NULL
|| (cl
->amask
& disabled_auth_mask
) != 0)