2 * Copyright 1995-2021 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 <openssl/trace.h>
20 #include "internal/nelem.h"
21 #include "ssl_local.h"
22 #include "internal/thread_once.h"
23 #include "internal/cryptlib.h"
25 /* NB: make sure indices in these tables match values above */
32 /* Table of NIDs for each cipher */
33 static const ssl_cipher_table ssl_cipher_table_cipher
[SSL_ENC_NUM_IDX
] = {
34 {SSL_DES
, NID_des_cbc
}, /* SSL_ENC_DES_IDX 0 */
35 {SSL_3DES
, NID_des_ede3_cbc
}, /* SSL_ENC_3DES_IDX 1 */
36 {SSL_RC4
, NID_rc4
}, /* SSL_ENC_RC4_IDX 2 */
37 {SSL_RC2
, NID_rc2_cbc
}, /* SSL_ENC_RC2_IDX 3 */
38 {SSL_IDEA
, NID_idea_cbc
}, /* SSL_ENC_IDEA_IDX 4 */
39 {SSL_eNULL
, NID_undef
}, /* SSL_ENC_NULL_IDX 5 */
40 {SSL_AES128
, NID_aes_128_cbc
}, /* SSL_ENC_AES128_IDX 6 */
41 {SSL_AES256
, NID_aes_256_cbc
}, /* SSL_ENC_AES256_IDX 7 */
42 {SSL_CAMELLIA128
, NID_camellia_128_cbc
}, /* SSL_ENC_CAMELLIA128_IDX 8 */
43 {SSL_CAMELLIA256
, NID_camellia_256_cbc
}, /* SSL_ENC_CAMELLIA256_IDX 9 */
44 {SSL_eGOST2814789CNT
, NID_gost89_cnt
}, /* SSL_ENC_GOST89_IDX 10 */
45 {SSL_SEED
, NID_seed_cbc
}, /* SSL_ENC_SEED_IDX 11 */
46 {SSL_AES128GCM
, NID_aes_128_gcm
}, /* SSL_ENC_AES128GCM_IDX 12 */
47 {SSL_AES256GCM
, NID_aes_256_gcm
}, /* SSL_ENC_AES256GCM_IDX 13 */
48 {SSL_AES128CCM
, NID_aes_128_ccm
}, /* SSL_ENC_AES128CCM_IDX 14 */
49 {SSL_AES256CCM
, NID_aes_256_ccm
}, /* SSL_ENC_AES256CCM_IDX 15 */
50 {SSL_AES128CCM8
, NID_aes_128_ccm
}, /* SSL_ENC_AES128CCM8_IDX 16 */
51 {SSL_AES256CCM8
, NID_aes_256_ccm
}, /* SSL_ENC_AES256CCM8_IDX 17 */
52 {SSL_eGOST2814789CNT12
, NID_gost89_cnt_12
}, /* SSL_ENC_GOST8912_IDX 18 */
53 {SSL_CHACHA20POLY1305
, NID_chacha20_poly1305
}, /* SSL_ENC_CHACHA_IDX 19 */
54 {SSL_ARIA128GCM
, NID_aria_128_gcm
}, /* SSL_ENC_ARIA128GCM_IDX 20 */
55 {SSL_ARIA256GCM
, NID_aria_256_gcm
}, /* SSL_ENC_ARIA256GCM_IDX 21 */
56 {SSL_MAGMA
, NID_magma_ctr_acpkm
}, /* SSL_ENC_MAGMA_IDX */
57 {SSL_KUZNYECHIK
, NID_kuznyechik_ctr_acpkm
}, /* SSL_ENC_KUZNYECHIK_IDX */
60 #define SSL_COMP_NULL_IDX 0
61 #define SSL_COMP_ZLIB_IDX 1
62 #define SSL_COMP_NUM_IDX 2
64 static STACK_OF(SSL_COMP
) *ssl_comp_methods
= NULL
;
66 #ifndef OPENSSL_NO_COMP
67 static CRYPTO_ONCE ssl_load_builtin_comp_once
= CRYPTO_ONCE_STATIC_INIT
;
70 /* NB: make sure indices in this table matches values above */
71 static const ssl_cipher_table ssl_cipher_table_mac
[SSL_MD_NUM_IDX
] = {
72 {SSL_MD5
, NID_md5
}, /* SSL_MD_MD5_IDX 0 */
73 {SSL_SHA1
, NID_sha1
}, /* SSL_MD_SHA1_IDX 1 */
74 {SSL_GOST94
, NID_id_GostR3411_94
}, /* SSL_MD_GOST94_IDX 2 */
75 {SSL_GOST89MAC
, NID_id_Gost28147_89_MAC
}, /* SSL_MD_GOST89MAC_IDX 3 */
76 {SSL_SHA256
, NID_sha256
}, /* SSL_MD_SHA256_IDX 4 */
77 {SSL_SHA384
, NID_sha384
}, /* SSL_MD_SHA384_IDX 5 */
78 {SSL_GOST12_256
, NID_id_GostR3411_2012_256
}, /* SSL_MD_GOST12_256_IDX 6 */
79 {SSL_GOST89MAC12
, NID_gost_mac_12
}, /* SSL_MD_GOST89MAC12_IDX 7 */
80 {SSL_GOST12_512
, NID_id_GostR3411_2012_512
}, /* SSL_MD_GOST12_512_IDX 8 */
81 {0, NID_md5_sha1
}, /* SSL_MD_MD5_SHA1_IDX 9 */
82 {0, NID_sha224
}, /* SSL_MD_SHA224_IDX 10 */
83 {0, NID_sha512
}, /* SSL_MD_SHA512_IDX 11 */
84 {SSL_MAGMAOMAC
, NID_magma_mac
}, /* sSL_MD_MAGMAOMAC_IDX */
85 {SSL_KUZNYECHIKOMAC
, NID_kuznyechik_mac
} /* SSL_MD_KUZNYECHIKOMAC_IDX */
89 static const ssl_cipher_table ssl_cipher_table_kx
[] = {
90 {SSL_kRSA
, NID_kx_rsa
},
91 {SSL_kECDHE
, NID_kx_ecdhe
},
92 {SSL_kDHE
, NID_kx_dhe
},
93 {SSL_kECDHEPSK
, NID_kx_ecdhe_psk
},
94 {SSL_kDHEPSK
, NID_kx_dhe_psk
},
95 {SSL_kRSAPSK
, NID_kx_rsa_psk
},
96 {SSL_kPSK
, NID_kx_psk
},
97 {SSL_kSRP
, NID_kx_srp
},
98 {SSL_kGOST
, NID_kx_gost
},
99 {SSL_kGOST18
, NID_kx_gost18
},
100 {SSL_kANY
, NID_kx_any
}
103 static const ssl_cipher_table ssl_cipher_table_auth
[] = {
104 {SSL_aRSA
, NID_auth_rsa
},
105 {SSL_aECDSA
, NID_auth_ecdsa
},
106 {SSL_aPSK
, NID_auth_psk
},
107 {SSL_aDSS
, NID_auth_dss
},
108 {SSL_aGOST01
, NID_auth_gost01
},
109 {SSL_aGOST12
, NID_auth_gost12
},
110 {SSL_aSRP
, NID_auth_srp
},
111 {SSL_aNULL
, NID_auth_null
},
112 {SSL_aANY
, NID_auth_any
}
116 /* Utility function for table lookup */
117 static int ssl_cipher_info_find(const ssl_cipher_table
* table
,
118 size_t table_cnt
, uint32_t mask
)
121 for (i
= 0; i
< table_cnt
; i
++, table
++) {
122 if (table
->mask
== mask
)
128 #define ssl_cipher_info_lookup(table, x) \
129 ssl_cipher_info_find(table, OSSL_NELEM(table), x)
132 * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation
133 * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is
136 static int ssl_mac_pkey_id
[SSL_MD_NUM_IDX
] = {
137 /* MD5, SHA, GOST94, MAC89 */
138 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, NID_undef
,
139 /* SHA256, SHA384, GOST2012_256, MAC89-12 */
140 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, NID_undef
,
143 /* MD5/SHA1, SHA224, SHA512, MAGMAOMAC, KUZNYECHIKOMAC */
144 NID_undef
, NID_undef
, NID_undef
, NID_undef
, NID_undef
148 #define CIPHER_KILL 2
151 #define CIPHER_SPECIAL 5
153 * Bump the ciphers to the top of the list.
154 * This rule isn't currently supported by the public cipherstring API.
156 #define CIPHER_BUMP 6
158 typedef struct cipher_order_st
{
159 const SSL_CIPHER
*cipher
;
162 struct cipher_order_st
*next
, *prev
;
165 static const SSL_CIPHER cipher_aliases
[] = {
166 /* "ALL" doesn't include eNULL (must be specifically enabled) */
167 {0, SSL_TXT_ALL
, NULL
, 0, 0, 0, ~SSL_eNULL
},
168 /* "COMPLEMENTOFALL" */
169 {0, SSL_TXT_CMPALL
, NULL
, 0, 0, 0, SSL_eNULL
},
172 * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in
175 {0, SSL_TXT_CMPDEF
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_NOT_DEFAULT
},
178 * key exchange aliases (some of those using only a single bit here
179 * combine multiple key exchange algs according to the RFCs, e.g. kDHE
180 * combines DHE_DSS and DHE_RSA)
182 {0, SSL_TXT_kRSA
, NULL
, 0, SSL_kRSA
},
184 {0, SSL_TXT_kEDH
, NULL
, 0, SSL_kDHE
},
185 {0, SSL_TXT_kDHE
, NULL
, 0, SSL_kDHE
},
186 {0, SSL_TXT_DH
, NULL
, 0, SSL_kDHE
},
188 {0, SSL_TXT_kEECDH
, NULL
, 0, SSL_kECDHE
},
189 {0, SSL_TXT_kECDHE
, NULL
, 0, SSL_kECDHE
},
190 {0, SSL_TXT_ECDH
, NULL
, 0, SSL_kECDHE
},
192 {0, SSL_TXT_kPSK
, NULL
, 0, SSL_kPSK
},
193 {0, SSL_TXT_kRSAPSK
, NULL
, 0, SSL_kRSAPSK
},
194 {0, SSL_TXT_kECDHEPSK
, NULL
, 0, SSL_kECDHEPSK
},
195 {0, SSL_TXT_kDHEPSK
, NULL
, 0, SSL_kDHEPSK
},
196 {0, SSL_TXT_kSRP
, NULL
, 0, SSL_kSRP
},
197 {0, SSL_TXT_kGOST
, NULL
, 0, SSL_kGOST
},
198 {0, SSL_TXT_kGOST18
, NULL
, 0, SSL_kGOST18
},
200 /* server authentication aliases */
201 {0, SSL_TXT_aRSA
, NULL
, 0, 0, SSL_aRSA
},
202 {0, SSL_TXT_aDSS
, NULL
, 0, 0, SSL_aDSS
},
203 {0, SSL_TXT_DSS
, NULL
, 0, 0, SSL_aDSS
},
204 {0, SSL_TXT_aNULL
, NULL
, 0, 0, SSL_aNULL
},
205 {0, SSL_TXT_aECDSA
, NULL
, 0, 0, SSL_aECDSA
},
206 {0, SSL_TXT_ECDSA
, NULL
, 0, 0, SSL_aECDSA
},
207 {0, SSL_TXT_aPSK
, NULL
, 0, 0, SSL_aPSK
},
208 {0, SSL_TXT_aGOST01
, NULL
, 0, 0, SSL_aGOST01
},
209 {0, SSL_TXT_aGOST12
, NULL
, 0, 0, SSL_aGOST12
},
210 {0, SSL_TXT_aGOST
, NULL
, 0, 0, SSL_aGOST01
| SSL_aGOST12
},
211 {0, SSL_TXT_aSRP
, NULL
, 0, 0, SSL_aSRP
},
213 /* aliases combining key exchange and server authentication */
214 {0, SSL_TXT_EDH
, NULL
, 0, SSL_kDHE
, ~SSL_aNULL
},
215 {0, SSL_TXT_DHE
, NULL
, 0, SSL_kDHE
, ~SSL_aNULL
},
216 {0, SSL_TXT_EECDH
, NULL
, 0, SSL_kECDHE
, ~SSL_aNULL
},
217 {0, SSL_TXT_ECDHE
, NULL
, 0, SSL_kECDHE
, ~SSL_aNULL
},
218 {0, SSL_TXT_NULL
, NULL
, 0, 0, 0, SSL_eNULL
},
219 {0, SSL_TXT_RSA
, NULL
, 0, SSL_kRSA
, SSL_aRSA
},
220 {0, SSL_TXT_ADH
, NULL
, 0, SSL_kDHE
, SSL_aNULL
},
221 {0, SSL_TXT_AECDH
, NULL
, 0, SSL_kECDHE
, SSL_aNULL
},
222 {0, SSL_TXT_PSK
, NULL
, 0, SSL_PSK
},
223 {0, SSL_TXT_SRP
, NULL
, 0, SSL_kSRP
},
225 /* symmetric encryption aliases */
226 {0, SSL_TXT_3DES
, NULL
, 0, 0, 0, SSL_3DES
},
227 {0, SSL_TXT_RC4
, NULL
, 0, 0, 0, SSL_RC4
},
228 {0, SSL_TXT_RC2
, NULL
, 0, 0, 0, SSL_RC2
},
229 {0, SSL_TXT_IDEA
, NULL
, 0, 0, 0, SSL_IDEA
},
230 {0, SSL_TXT_SEED
, NULL
, 0, 0, 0, SSL_SEED
},
231 {0, SSL_TXT_eNULL
, NULL
, 0, 0, 0, SSL_eNULL
},
232 {0, SSL_TXT_GOST
, NULL
, 0, 0, 0,
233 SSL_eGOST2814789CNT
| SSL_eGOST2814789CNT12
| SSL_MAGMA
| SSL_KUZNYECHIK
},
234 {0, SSL_TXT_AES128
, NULL
, 0, 0, 0,
235 SSL_AES128
| SSL_AES128GCM
| SSL_AES128CCM
| SSL_AES128CCM8
},
236 {0, SSL_TXT_AES256
, NULL
, 0, 0, 0,
237 SSL_AES256
| SSL_AES256GCM
| SSL_AES256CCM
| SSL_AES256CCM8
},
238 {0, SSL_TXT_AES
, NULL
, 0, 0, 0, SSL_AES
},
239 {0, SSL_TXT_AES_GCM
, NULL
, 0, 0, 0, SSL_AES128GCM
| SSL_AES256GCM
},
240 {0, SSL_TXT_AES_CCM
, NULL
, 0, 0, 0,
241 SSL_AES128CCM
| SSL_AES256CCM
| SSL_AES128CCM8
| SSL_AES256CCM8
},
242 {0, SSL_TXT_AES_CCM_8
, NULL
, 0, 0, 0, SSL_AES128CCM8
| SSL_AES256CCM8
},
243 {0, SSL_TXT_CAMELLIA128
, NULL
, 0, 0, 0, SSL_CAMELLIA128
},
244 {0, SSL_TXT_CAMELLIA256
, NULL
, 0, 0, 0, SSL_CAMELLIA256
},
245 {0, SSL_TXT_CAMELLIA
, NULL
, 0, 0, 0, SSL_CAMELLIA
},
246 {0, SSL_TXT_CHACHA20
, NULL
, 0, 0, 0, SSL_CHACHA20
},
247 {0, SSL_TXT_GOST2012_GOST8912_GOST8912
, NULL
, 0, 0, 0, SSL_eGOST2814789CNT12
},
249 {0, SSL_TXT_ARIA
, NULL
, 0, 0, 0, SSL_ARIA
},
250 {0, SSL_TXT_ARIA_GCM
, NULL
, 0, 0, 0, SSL_ARIA128GCM
| SSL_ARIA256GCM
},
251 {0, SSL_TXT_ARIA128
, NULL
, 0, 0, 0, SSL_ARIA128GCM
},
252 {0, SSL_TXT_ARIA256
, NULL
, 0, 0, 0, SSL_ARIA256GCM
},
253 {0, SSL_TXT_CBC
, NULL
, 0, 0, 0, SSL_CBC
},
256 {0, SSL_TXT_MD5
, NULL
, 0, 0, 0, 0, SSL_MD5
},
257 {0, SSL_TXT_SHA1
, NULL
, 0, 0, 0, 0, SSL_SHA1
},
258 {0, SSL_TXT_SHA
, NULL
, 0, 0, 0, 0, SSL_SHA1
},
259 {0, SSL_TXT_GOST94
, NULL
, 0, 0, 0, 0, SSL_GOST94
},
260 {0, SSL_TXT_GOST89MAC
, NULL
, 0, 0, 0, 0, SSL_GOST89MAC
| SSL_GOST89MAC12
},
261 {0, SSL_TXT_SHA256
, NULL
, 0, 0, 0, 0, SSL_SHA256
},
262 {0, SSL_TXT_SHA384
, NULL
, 0, 0, 0, 0, SSL_SHA384
},
263 {0, SSL_TXT_GOST12
, NULL
, 0, 0, 0, 0, SSL_GOST12_256
},
265 /* protocol version aliases */
266 {0, SSL_TXT_SSLV3
, NULL
, 0, 0, 0, 0, 0, SSL3_VERSION
},
267 {0, SSL_TXT_TLSV1
, NULL
, 0, 0, 0, 0, 0, TLS1_VERSION
},
268 {0, "TLSv1.0", NULL
, 0, 0, 0, 0, 0, TLS1_VERSION
},
269 {0, SSL_TXT_TLSV1_2
, NULL
, 0, 0, 0, 0, 0, TLS1_2_VERSION
},
271 /* strength classes */
272 {0, SSL_TXT_LOW
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_LOW
},
273 {0, SSL_TXT_MEDIUM
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_MEDIUM
},
274 {0, SSL_TXT_HIGH
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_HIGH
},
275 /* FIPS 140-2 approved ciphersuite */
276 {0, SSL_TXT_FIPS
, NULL
, 0, 0, 0, ~SSL_eNULL
, 0, 0, 0, 0, 0, SSL_FIPS
},
278 /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */
279 {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA
, NULL
, 0,
280 SSL_kDHE
, SSL_aDSS
, SSL_3DES
, SSL_SHA1
, 0, 0, 0, 0, SSL_HIGH
| SSL_FIPS
},
281 {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA
, NULL
, 0,
282 SSL_kDHE
, SSL_aRSA
, SSL_3DES
, SSL_SHA1
, 0, 0, 0, 0, SSL_HIGH
| SSL_FIPS
},
287 * Search for public key algorithm with given name and return its pkey_id if
288 * it is available. Otherwise return 0
290 #ifdef OPENSSL_NO_ENGINE
292 static int get_optional_pkey_id(const char *pkey_name
)
294 const EVP_PKEY_ASN1_METHOD
*ameth
;
296 ameth
= EVP_PKEY_asn1_find_str(NULL
, pkey_name
, -1);
297 if (ameth
&& EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
,
305 static int get_optional_pkey_id(const char *pkey_name
)
307 const EVP_PKEY_ASN1_METHOD
*ameth
;
308 ENGINE
*tmpeng
= NULL
;
310 ameth
= EVP_PKEY_asn1_find_str(&tmpeng
, pkey_name
, -1);
312 if (EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
,
316 tls_engine_finish(tmpeng
);
322 int ssl_load_ciphers(SSL_CTX
*ctx
)
325 const ssl_cipher_table
*t
;
327 ctx
->disabled_enc_mask
= 0;
328 for (i
= 0, t
= ssl_cipher_table_cipher
; i
< SSL_ENC_NUM_IDX
; i
++, t
++) {
329 if (t
->nid
!= NID_undef
) {
330 const EVP_CIPHER
*cipher
331 = ssl_evp_cipher_fetch(ctx
->libctx
, t
->nid
, ctx
->propq
);
333 ctx
->ssl_cipher_methods
[i
] = cipher
;
335 ctx
->disabled_enc_mask
|= t
->mask
;
338 ctx
->disabled_mac_mask
= 0;
339 for (i
= 0, t
= ssl_cipher_table_mac
; i
< SSL_MD_NUM_IDX
; i
++, t
++) {
341 = ssl_evp_md_fetch(ctx
->libctx
, t
->nid
, ctx
->propq
);
343 ctx
->ssl_digest_methods
[i
] = md
;
345 ctx
->disabled_mac_mask
|= t
->mask
;
347 int tmpsize
= EVP_MD_size(md
);
348 if (!ossl_assert(tmpsize
>= 0))
350 ctx
->ssl_mac_secret_size
[i
] = tmpsize
;
354 ctx
->disabled_mkey_mask
= 0;
355 ctx
->disabled_auth_mask
= 0;
357 #ifdef OPENSSL_NO_DSA
358 ctx
->disabled_auth_mask
|= SSL_aDSS
;
361 ctx
->disabled_mkey_mask
|= SSL_kDHE
| SSL_kDHEPSK
;
364 ctx
->disabled_mkey_mask
|= SSL_kECDHE
| SSL_kECDHEPSK
;
365 ctx
->disabled_auth_mask
|= SSL_aECDSA
;
367 #ifdef OPENSSL_NO_PSK
368 ctx
->disabled_mkey_mask
|= SSL_PSK
;
369 ctx
->disabled_auth_mask
|= SSL_aPSK
;
371 #ifdef OPENSSL_NO_SRP
372 ctx
->disabled_mkey_mask
|= SSL_kSRP
;
376 * Check for presence of GOST 34.10 algorithms, and if they are not
377 * present, disable appropriate auth and key exchange
379 ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
] = get_optional_pkey_id(SN_id_Gost28147_89_MAC
);
380 if (ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
])
381 ctx
->ssl_mac_secret_size
[SSL_MD_GOST89MAC_IDX
] = 32;
383 ctx
->disabled_mac_mask
|= SSL_GOST89MAC
;
385 ssl_mac_pkey_id
[SSL_MD_GOST89MAC12_IDX
] =
386 get_optional_pkey_id(SN_gost_mac_12
);
387 if (ssl_mac_pkey_id
[SSL_MD_GOST89MAC12_IDX
])
388 ctx
->ssl_mac_secret_size
[SSL_MD_GOST89MAC12_IDX
] = 32;
390 ctx
->disabled_mac_mask
|= SSL_GOST89MAC12
;
392 ssl_mac_pkey_id
[SSL_MD_MAGMAOMAC_IDX
] =
393 get_optional_pkey_id(SN_magma_mac
);
394 if (ssl_mac_pkey_id
[SSL_MD_MAGMAOMAC_IDX
])
395 ctx
->ssl_mac_secret_size
[SSL_MD_MAGMAOMAC_IDX
] = 32;
397 ctx
->disabled_mac_mask
|= SSL_MAGMAOMAC
;
399 ssl_mac_pkey_id
[SSL_MD_KUZNYECHIKOMAC_IDX
] =
400 get_optional_pkey_id(SN_kuznyechik_mac
);
401 if (ssl_mac_pkey_id
[SSL_MD_KUZNYECHIKOMAC_IDX
])
402 ctx
->ssl_mac_secret_size
[SSL_MD_KUZNYECHIKOMAC_IDX
] = 32;
404 ctx
->disabled_mac_mask
|= SSL_KUZNYECHIKOMAC
;
406 if (!get_optional_pkey_id(SN_id_GostR3410_2001
))
407 ctx
->disabled_auth_mask
|= SSL_aGOST01
| SSL_aGOST12
;
408 if (!get_optional_pkey_id(SN_id_GostR3410_2012_256
))
409 ctx
->disabled_auth_mask
|= SSL_aGOST12
;
410 if (!get_optional_pkey_id(SN_id_GostR3410_2012_512
))
411 ctx
->disabled_auth_mask
|= SSL_aGOST12
;
413 * Disable GOST key exchange if no GOST signature algs are available *
415 if ((ctx
->disabled_auth_mask
& (SSL_aGOST01
| SSL_aGOST12
)) ==
416 (SSL_aGOST01
| SSL_aGOST12
))
417 ctx
->disabled_mkey_mask
|= SSL_kGOST
;
419 if ((ctx
->disabled_auth_mask
& SSL_aGOST12
) == SSL_aGOST12
)
420 ctx
->disabled_mkey_mask
|= SSL_kGOST18
;
425 #ifndef OPENSSL_NO_COMP
427 static int sk_comp_cmp(const SSL_COMP
*const *a
, const SSL_COMP
*const *b
)
429 return ((*a
)->id
- (*b
)->id
);
432 DEFINE_RUN_ONCE_STATIC(do_load_builtin_compressions
)
434 SSL_COMP
*comp
= NULL
;
435 COMP_METHOD
*method
= COMP_zlib();
437 ssl_comp_methods
= sk_SSL_COMP_new(sk_comp_cmp
);
439 if (COMP_get_type(method
) != NID_undef
&& ssl_comp_methods
!= NULL
) {
440 comp
= OPENSSL_malloc(sizeof(*comp
));
442 comp
->method
= method
;
443 comp
->id
= SSL_COMP_ZLIB_IDX
;
444 comp
->name
= COMP_get_name(method
);
445 sk_SSL_COMP_push(ssl_comp_methods
, comp
);
446 sk_SSL_COMP_sort(ssl_comp_methods
);
452 static int load_builtin_compressions(void)
454 return RUN_ONCE(&ssl_load_builtin_comp_once
, do_load_builtin_compressions
);
458 int ssl_cipher_get_evp_cipher(SSL_CTX
*ctx
, const SSL_CIPHER
*sslc
,
459 const EVP_CIPHER
**enc
)
461 int i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, sslc
->algorithm_enc
);
466 if (i
== SSL_ENC_NULL_IDX
) {
468 * We assume we don't care about this coming from an ENGINE so
469 * just do a normal EVP_CIPHER_fetch instead of
470 * ssl_evp_cipher_fetch()
472 *enc
= EVP_CIPHER_fetch(ctx
->libctx
, "NULL", ctx
->propq
);
476 const EVP_CIPHER
*cipher
= ctx
->ssl_cipher_methods
[i
];
479 || !ssl_evp_cipher_up_ref(cipher
))
481 *enc
= ctx
->ssl_cipher_methods
[i
];
487 int ssl_cipher_get_evp(SSL_CTX
*ctx
, const SSL_SESSION
*s
,
488 const EVP_CIPHER
**enc
, const EVP_MD
**md
,
489 int *mac_pkey_type
, size_t *mac_secret_size
,
490 SSL_COMP
**comp
, int use_etm
)
500 #ifndef OPENSSL_NO_COMP
501 if (!load_builtin_compressions()) {
503 * Currently don't care, since a failure only means that
504 * ssl_comp_methods is NULL, which is perfectly OK
509 ctmp
.id
= s
->compress_meth
;
510 if (ssl_comp_methods
!= NULL
) {
511 i
= sk_SSL_COMP_find(ssl_comp_methods
, &ctmp
);
512 *comp
= sk_SSL_COMP_value(ssl_comp_methods
, i
);
514 /* If were only interested in comp then return success */
515 if ((enc
== NULL
) && (md
== NULL
))
519 if ((enc
== NULL
) || (md
== NULL
))
522 if (!ssl_cipher_get_evp_cipher(ctx
, c
, enc
))
525 i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
528 if (mac_pkey_type
!= NULL
)
529 *mac_pkey_type
= NID_undef
;
530 if (mac_secret_size
!= NULL
)
531 *mac_secret_size
= 0;
532 if (c
->algorithm_mac
== SSL_AEAD
)
533 mac_pkey_type
= NULL
;
535 if (!ssl_evp_md_up_ref(ctx
->ssl_digest_methods
[i
])) {
536 ssl_evp_cipher_free(*enc
);
539 *md
= ctx
->ssl_digest_methods
[i
];
540 if (mac_pkey_type
!= NULL
)
541 *mac_pkey_type
= ssl_mac_pkey_id
[i
];
542 if (mac_secret_size
!= NULL
)
543 *mac_secret_size
= ctx
->ssl_mac_secret_size
[i
];
546 if ((*enc
!= NULL
) &&
547 (*md
!= NULL
|| (EVP_CIPHER_flags(*enc
) & EVP_CIPH_FLAG_AEAD_CIPHER
))
548 && (!mac_pkey_type
|| *mac_pkey_type
!= NID_undef
)) {
549 const EVP_CIPHER
*evp
= NULL
;
552 || s
->ssl_version
>> 8 != TLS1_VERSION_MAJOR
553 || s
->ssl_version
< TLS1_VERSION
)
556 if (c
->algorithm_enc
== SSL_RC4
557 && c
->algorithm_mac
== SSL_MD5
)
558 evp
= ssl_evp_cipher_fetch(ctx
->libctx
, NID_rc4_hmac_md5
,
560 else if (c
->algorithm_enc
== SSL_AES128
561 && c
->algorithm_mac
== SSL_SHA1
)
562 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
563 NID_aes_128_cbc_hmac_sha1
,
565 else if (c
->algorithm_enc
== SSL_AES256
566 && c
->algorithm_mac
== SSL_SHA1
)
567 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
568 NID_aes_256_cbc_hmac_sha1
,
570 else if (c
->algorithm_enc
== SSL_AES128
571 && c
->algorithm_mac
== SSL_SHA256
)
572 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
573 NID_aes_128_cbc_hmac_sha256
,
575 else if (c
->algorithm_enc
== SSL_AES256
576 && c
->algorithm_mac
== SSL_SHA256
)
577 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
578 NID_aes_256_cbc_hmac_sha256
,
582 ssl_evp_cipher_free(*enc
);
583 ssl_evp_md_free(*md
);
593 const EVP_MD
*ssl_md(SSL_CTX
*ctx
, int idx
)
595 idx
&= SSL_HANDSHAKE_MAC_MASK
;
596 if (idx
< 0 || idx
>= SSL_MD_NUM_IDX
)
598 return ctx
->ssl_digest_methods
[idx
];
601 const EVP_MD
*ssl_handshake_md(SSL
*s
)
603 return ssl_md(s
->ctx
, ssl_get_algorithm2(s
));
606 const EVP_MD
*ssl_prf_md(SSL
*s
)
608 return ssl_md(s
->ctx
, ssl_get_algorithm2(s
) >> TLS1_PRF_DGST_SHIFT
);
611 #define ITEM_SEP(a) \
612 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
614 static void ll_append_tail(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
621 if (curr
->prev
!= NULL
)
622 curr
->prev
->next
= curr
->next
;
623 if (curr
->next
!= NULL
)
624 curr
->next
->prev
= curr
->prev
;
625 (*tail
)->next
= curr
;
631 static void ll_append_head(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
638 if (curr
->next
!= NULL
)
639 curr
->next
->prev
= curr
->prev
;
640 if (curr
->prev
!= NULL
)
641 curr
->prev
->next
= curr
->next
;
642 (*head
)->prev
= curr
;
648 static void ssl_cipher_collect_ciphers(const SSL_METHOD
*ssl_method
,
650 uint32_t disabled_mkey
,
651 uint32_t disabled_auth
,
652 uint32_t disabled_enc
,
653 uint32_t disabled_mac
,
654 CIPHER_ORDER
*co_list
,
655 CIPHER_ORDER
**head_p
,
656 CIPHER_ORDER
**tail_p
)
662 * We have num_of_ciphers descriptions compiled in, depending on the
663 * method selected (SSLv3, TLSv1 etc).
664 * These will later be sorted in a linked list with at most num
668 /* Get the initial list of ciphers */
669 co_list_num
= 0; /* actual count of ciphers */
670 for (i
= 0; i
< num_of_ciphers
; i
++) {
671 c
= ssl_method
->get_cipher(i
);
672 /* drop those that use any of that is not available */
673 if (c
== NULL
|| !c
->valid
)
675 if ((c
->algorithm_mkey
& disabled_mkey
) ||
676 (c
->algorithm_auth
& disabled_auth
) ||
677 (c
->algorithm_enc
& disabled_enc
) ||
678 (c
->algorithm_mac
& disabled_mac
))
680 if (((ssl_method
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
) == 0) &&
683 if (((ssl_method
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
) != 0) &&
687 co_list
[co_list_num
].cipher
= c
;
688 co_list
[co_list_num
].next
= NULL
;
689 co_list
[co_list_num
].prev
= NULL
;
690 co_list
[co_list_num
].active
= 0;
695 * Prepare linked list from list entries
697 if (co_list_num
> 0) {
698 co_list
[0].prev
= NULL
;
700 if (co_list_num
> 1) {
701 co_list
[0].next
= &co_list
[1];
703 for (i
= 1; i
< co_list_num
- 1; i
++) {
704 co_list
[i
].prev
= &co_list
[i
- 1];
705 co_list
[i
].next
= &co_list
[i
+ 1];
708 co_list
[co_list_num
- 1].prev
= &co_list
[co_list_num
- 2];
711 co_list
[co_list_num
- 1].next
= NULL
;
713 *head_p
= &co_list
[0];
714 *tail_p
= &co_list
[co_list_num
- 1];
718 static void ssl_cipher_collect_aliases(const SSL_CIPHER
**ca_list
,
719 int num_of_group_aliases
,
720 uint32_t disabled_mkey
,
721 uint32_t disabled_auth
,
722 uint32_t disabled_enc
,
723 uint32_t disabled_mac
,
726 CIPHER_ORDER
*ciph_curr
;
727 const SSL_CIPHER
**ca_curr
;
729 uint32_t mask_mkey
= ~disabled_mkey
;
730 uint32_t mask_auth
= ~disabled_auth
;
731 uint32_t mask_enc
= ~disabled_enc
;
732 uint32_t mask_mac
= ~disabled_mac
;
735 * First, add the real ciphers as already collected
739 while (ciph_curr
!= NULL
) {
740 *ca_curr
= ciph_curr
->cipher
;
742 ciph_curr
= ciph_curr
->next
;
746 * Now we add the available ones from the cipher_aliases[] table.
747 * They represent either one or more algorithms, some of which
748 * in any affected category must be supported (set in enabled_mask),
749 * or represent a cipher strength value (will be added in any case because algorithms=0).
751 for (i
= 0; i
< num_of_group_aliases
; i
++) {
752 uint32_t algorithm_mkey
= cipher_aliases
[i
].algorithm_mkey
;
753 uint32_t algorithm_auth
= cipher_aliases
[i
].algorithm_auth
;
754 uint32_t algorithm_enc
= cipher_aliases
[i
].algorithm_enc
;
755 uint32_t algorithm_mac
= cipher_aliases
[i
].algorithm_mac
;
758 if ((algorithm_mkey
& mask_mkey
) == 0)
762 if ((algorithm_auth
& mask_auth
) == 0)
766 if ((algorithm_enc
& mask_enc
) == 0)
770 if ((algorithm_mac
& mask_mac
) == 0)
773 *ca_curr
= (SSL_CIPHER
*)(cipher_aliases
+ i
);
777 *ca_curr
= NULL
; /* end of list */
780 static void ssl_cipher_apply_rule(uint32_t cipher_id
, uint32_t alg_mkey
,
781 uint32_t alg_auth
, uint32_t alg_enc
,
782 uint32_t alg_mac
, int min_tls
,
783 uint32_t algo_strength
, int rule
,
784 int32_t strength_bits
, CIPHER_ORDER
**head_p
,
785 CIPHER_ORDER
**tail_p
)
787 CIPHER_ORDER
*head
, *tail
, *curr
, *next
, *last
;
788 const SSL_CIPHER
*cp
;
791 OSSL_TRACE_BEGIN(TLS_CIPHER
){
793 "Applying rule %d with %08x/%08x/%08x/%08x/%08x %08x (%d)\n",
794 rule
, alg_mkey
, alg_auth
, alg_enc
, alg_mac
, min_tls
,
795 algo_strength
, strength_bits
);
798 if (rule
== CIPHER_DEL
|| rule
== CIPHER_BUMP
)
799 reverse
= 1; /* needed to maintain sorting between currently
823 next
= reverse
? curr
->prev
: curr
->next
;
828 * Selection criteria is either the value of strength_bits
829 * or the algorithms used.
831 if (strength_bits
>= 0) {
832 if (strength_bits
!= cp
->strength_bits
)
835 if (trc_out
!= NULL
) {
838 "\nAlgo = %08x/%08x/%08x/%08x/%08x Algo_strength = %08x\n",
839 cp
->name
, cp
->algorithm_mkey
, cp
->algorithm_auth
,
840 cp
->algorithm_enc
, cp
->algorithm_mac
, cp
->min_tls
,
843 if (cipher_id
!= 0 && (cipher_id
!= cp
->id
))
845 if (alg_mkey
&& !(alg_mkey
& cp
->algorithm_mkey
))
847 if (alg_auth
&& !(alg_auth
& cp
->algorithm_auth
))
849 if (alg_enc
&& !(alg_enc
& cp
->algorithm_enc
))
851 if (alg_mac
&& !(alg_mac
& cp
->algorithm_mac
))
853 if (min_tls
&& (min_tls
!= cp
->min_tls
))
855 if ((algo_strength
& SSL_STRONG_MASK
)
856 && !(algo_strength
& SSL_STRONG_MASK
& cp
->algo_strength
))
858 if ((algo_strength
& SSL_DEFAULT_MASK
)
859 && !(algo_strength
& SSL_DEFAULT_MASK
& cp
->algo_strength
))
864 BIO_printf(trc_out
, "Action = %d\n", rule
);
866 /* add the cipher if it has not been added yet. */
867 if (rule
== CIPHER_ADD
) {
870 ll_append_tail(&head
, curr
, &tail
);
874 /* Move the added cipher to this location */
875 else if (rule
== CIPHER_ORD
) {
878 ll_append_tail(&head
, curr
, &tail
);
880 } else if (rule
== CIPHER_DEL
) {
884 * most recently deleted ciphersuites get best positions for
885 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
886 * in reverse to maintain the order)
888 ll_append_head(&head
, curr
, &tail
);
891 } else if (rule
== CIPHER_BUMP
) {
893 ll_append_head(&head
, curr
, &tail
);
894 } else if (rule
== CIPHER_KILL
) {
899 curr
->prev
->next
= curr
->next
;
903 if (curr
->next
!= NULL
)
904 curr
->next
->prev
= curr
->prev
;
905 if (curr
->prev
!= NULL
)
906 curr
->prev
->next
= curr
->next
;
915 OSSL_TRACE_END(TLS_CIPHER
);
918 static int ssl_cipher_strength_sort(CIPHER_ORDER
**head_p
,
919 CIPHER_ORDER
**tail_p
)
921 int32_t max_strength_bits
;
926 * This routine sorts the ciphers with descending strength. The sorting
927 * must keep the pre-sorted sequence, so we apply the normal sorting
928 * routine as '+' movement to the end of the list.
930 max_strength_bits
= 0;
932 while (curr
!= NULL
) {
933 if (curr
->active
&& (curr
->cipher
->strength_bits
> max_strength_bits
))
934 max_strength_bits
= curr
->cipher
->strength_bits
;
938 number_uses
= OPENSSL_zalloc(sizeof(int) * (max_strength_bits
+ 1));
939 if (number_uses
== NULL
) {
940 ERR_raise(ERR_LIB_SSL
, ERR_R_MALLOC_FAILURE
);
945 * Now find the strength_bits values actually used
948 while (curr
!= NULL
) {
950 number_uses
[curr
->cipher
->strength_bits
]++;
954 * Go through the list of used strength_bits values in descending
957 for (i
= max_strength_bits
; i
>= 0; i
--)
958 if (number_uses
[i
] > 0)
959 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD
, i
, head_p
,
962 OPENSSL_free(number_uses
);
966 static int ssl_cipher_process_rulestr(const char *rule_str
,
967 CIPHER_ORDER
**head_p
,
968 CIPHER_ORDER
**tail_p
,
969 const SSL_CIPHER
**ca_list
, CERT
*c
)
971 uint32_t alg_mkey
, alg_auth
, alg_enc
, alg_mac
, algo_strength
;
974 int j
, multi
, found
, rule
, retval
, ok
, buflen
;
975 uint32_t cipher_id
= 0;
988 } else if (ch
== '+') {
991 } else if (ch
== '!') {
994 } else if (ch
== '@') {
995 rule
= CIPHER_SPECIAL
;
1017 #ifndef CHARSET_EBCDIC
1018 while (((ch
>= 'A') && (ch
<= 'Z')) ||
1019 ((ch
>= '0') && (ch
<= '9')) ||
1020 ((ch
>= 'a') && (ch
<= 'z')) ||
1021 (ch
== '-') || (ch
== '.') || (ch
== '='))
1023 while (isalnum((unsigned char)ch
) || (ch
== '-') || (ch
== '.')
1033 * We hit something we cannot deal with,
1034 * it is no command or separator nor
1035 * alphanumeric, so we call this an error.
1037 ERR_raise(ERR_LIB_SSL
, SSL_R_INVALID_COMMAND
);
1043 if (rule
== CIPHER_SPECIAL
) {
1044 found
= 0; /* unused -- avoid compiler warning */
1045 break; /* special treatment */
1048 /* check for multi-part specification */
1057 * Now search for the cipher alias in the ca_list. Be careful
1058 * with the strncmp, because the "buflen" limitation
1059 * will make the rule "ADH:SOME" and the cipher
1060 * "ADH-MY-CIPHER" look like a match for buflen=3.
1061 * So additionally check whether the cipher name found
1062 * has the correct length. We can save a strlen() call:
1063 * just checking for the '\0' at the right place is
1064 * sufficient, we have to strncmp() anyway. (We cannot
1065 * use strcmp(), because buf is not '\0' terminated.)
1069 while (ca_list
[j
]) {
1070 if (strncmp(buf
, ca_list
[j
]->name
, buflen
) == 0
1071 && (ca_list
[j
]->name
[buflen
] == '\0')) {
1079 break; /* ignore this entry */
1081 if (ca_list
[j
]->algorithm_mkey
) {
1083 alg_mkey
&= ca_list
[j
]->algorithm_mkey
;
1089 alg_mkey
= ca_list
[j
]->algorithm_mkey
;
1093 if (ca_list
[j
]->algorithm_auth
) {
1095 alg_auth
&= ca_list
[j
]->algorithm_auth
;
1101 alg_auth
= ca_list
[j
]->algorithm_auth
;
1105 if (ca_list
[j
]->algorithm_enc
) {
1107 alg_enc
&= ca_list
[j
]->algorithm_enc
;
1113 alg_enc
= ca_list
[j
]->algorithm_enc
;
1117 if (ca_list
[j
]->algorithm_mac
) {
1119 alg_mac
&= ca_list
[j
]->algorithm_mac
;
1125 alg_mac
= ca_list
[j
]->algorithm_mac
;
1129 if (ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
) {
1130 if (algo_strength
& SSL_STRONG_MASK
) {
1132 (ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
) |
1134 if (!(algo_strength
& SSL_STRONG_MASK
)) {
1139 algo_strength
= ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
;
1143 if (ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
) {
1144 if (algo_strength
& SSL_DEFAULT_MASK
) {
1146 (ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
) |
1148 if (!(algo_strength
& SSL_DEFAULT_MASK
)) {
1154 ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
;
1158 if (ca_list
[j
]->valid
) {
1160 * explicit ciphersuite found; its protocol version does not
1161 * become part of the search pattern!
1164 cipher_id
= ca_list
[j
]->id
;
1167 * not an explicit ciphersuite; only in this case, the
1168 * protocol version is considered part of the search pattern
1171 if (ca_list
[j
]->min_tls
) {
1172 if (min_tls
!= 0 && min_tls
!= ca_list
[j
]->min_tls
) {
1176 min_tls
= ca_list
[j
]->min_tls
;
1186 * Ok, we have the rule, now apply it
1188 if (rule
== CIPHER_SPECIAL
) { /* special command */
1190 if ((buflen
== 8) && strncmp(buf
, "STRENGTH", 8) == 0) {
1191 ok
= ssl_cipher_strength_sort(head_p
, tail_p
);
1192 } else if (buflen
== 10 && strncmp(buf
, "SECLEVEL=", 9) == 0) {
1193 int level
= buf
[9] - '0';
1194 if (level
< 0 || level
> 5) {
1195 ERR_raise(ERR_LIB_SSL
, SSL_R_INVALID_COMMAND
);
1197 c
->sec_level
= level
;
1201 ERR_raise(ERR_LIB_SSL
, SSL_R_INVALID_COMMAND
);
1206 * We do not support any "multi" options
1207 * together with "@", so throw away the
1208 * rest of the command, if any left, until
1209 * end or ':' is found.
1211 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1214 ssl_cipher_apply_rule(cipher_id
,
1215 alg_mkey
, alg_auth
, alg_enc
, alg_mac
,
1216 min_tls
, algo_strength
, rule
, -1, head_p
,
1219 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1229 #ifndef OPENSSL_NO_EC
1230 static int check_suiteb_cipher_list(const SSL_METHOD
*meth
, CERT
*c
,
1231 const char **prule_str
)
1233 unsigned int suiteb_flags
= 0, suiteb_comb2
= 0;
1234 if (strncmp(*prule_str
, "SUITEB128ONLY", 13) == 0) {
1235 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS_ONLY
;
1236 } else if (strncmp(*prule_str
, "SUITEB128C2", 11) == 0) {
1238 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1239 } else if (strncmp(*prule_str
, "SUITEB128", 9) == 0) {
1240 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1241 } else if (strncmp(*prule_str
, "SUITEB192", 9) == 0) {
1242 suiteb_flags
= SSL_CERT_FLAG_SUITEB_192_LOS
;
1246 c
->cert_flags
&= ~SSL_CERT_FLAG_SUITEB_128_LOS
;
1247 c
->cert_flags
|= suiteb_flags
;
1249 suiteb_flags
= c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
;
1254 /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */
1256 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_TLS1_2_CIPHERS
)) {
1257 ERR_raise(ERR_LIB_SSL
, SSL_R_AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE
);
1260 # ifndef OPENSSL_NO_EC
1261 switch (suiteb_flags
) {
1262 case SSL_CERT_FLAG_SUITEB_128_LOS
:
1264 *prule_str
= "ECDHE-ECDSA-AES256-GCM-SHA384";
1267 "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384";
1269 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY
:
1270 *prule_str
= "ECDHE-ECDSA-AES128-GCM-SHA256";
1272 case SSL_CERT_FLAG_SUITEB_192_LOS
:
1273 *prule_str
= "ECDHE-ECDSA-AES256-GCM-SHA384";
1278 ERR_raise(ERR_LIB_SSL
, SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE
);
1284 static int ciphersuite_cb(const char *elem
, int len
, void *arg
)
1286 STACK_OF(SSL_CIPHER
) *ciphersuites
= (STACK_OF(SSL_CIPHER
) *)arg
;
1287 const SSL_CIPHER
*cipher
;
1288 /* Arbitrary sized temp buffer for the cipher name. Should be big enough */
1291 if (len
> (int)(sizeof(name
) - 1))
1292 /* Anyway return 1 so we can parse rest of the list */
1295 memcpy(name
, elem
, len
);
1298 cipher
= ssl3_get_cipher_by_std_name(name
);
1300 /* Ciphersuite not found but return 1 to parse rest of the list */
1303 if (!sk_SSL_CIPHER_push(ciphersuites
, cipher
)) {
1304 ERR_raise(ERR_LIB_SSL
, ERR_R_INTERNAL_ERROR
);
1311 static __owur
int set_ciphersuites(STACK_OF(SSL_CIPHER
) **currciphers
, const char *str
)
1313 STACK_OF(SSL_CIPHER
) *newciphers
= sk_SSL_CIPHER_new_null();
1315 if (newciphers
== NULL
)
1318 /* Parse the list. We explicitly allow an empty list */
1320 && (CONF_parse_list(str
, ':', 1, ciphersuite_cb
, newciphers
) <= 0
1321 || sk_SSL_CIPHER_num(newciphers
) == 0)) {
1322 ERR_raise(ERR_LIB_SSL
, SSL_R_NO_CIPHER_MATCH
);
1323 sk_SSL_CIPHER_free(newciphers
);
1326 sk_SSL_CIPHER_free(*currciphers
);
1327 *currciphers
= newciphers
;
1332 static int update_cipher_list_by_id(STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1333 STACK_OF(SSL_CIPHER
) *cipherstack
)
1335 STACK_OF(SSL_CIPHER
) *tmp_cipher_list
= sk_SSL_CIPHER_dup(cipherstack
);
1337 if (tmp_cipher_list
== NULL
) {
1341 sk_SSL_CIPHER_free(*cipher_list_by_id
);
1342 *cipher_list_by_id
= tmp_cipher_list
;
1344 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id
, ssl_cipher_ptr_id_cmp
);
1345 sk_SSL_CIPHER_sort(*cipher_list_by_id
);
1350 static int update_cipher_list(STACK_OF(SSL_CIPHER
) **cipher_list
,
1351 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1352 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
)
1355 STACK_OF(SSL_CIPHER
) *tmp_cipher_list
= sk_SSL_CIPHER_dup(*cipher_list
);
1357 if (tmp_cipher_list
== NULL
)
1361 * Delete any existing TLSv1.3 ciphersuites. These are always first in the
1364 while (sk_SSL_CIPHER_num(tmp_cipher_list
) > 0
1365 && sk_SSL_CIPHER_value(tmp_cipher_list
, 0)->min_tls
1367 (void)sk_SSL_CIPHER_delete(tmp_cipher_list
, 0);
1369 /* Insert the new TLSv1.3 ciphersuites */
1370 for (i
= 0; i
< sk_SSL_CIPHER_num(tls13_ciphersuites
); i
++)
1371 sk_SSL_CIPHER_insert(tmp_cipher_list
,
1372 sk_SSL_CIPHER_value(tls13_ciphersuites
, i
), i
);
1374 if (!update_cipher_list_by_id(cipher_list_by_id
, tmp_cipher_list
))
1377 sk_SSL_CIPHER_free(*cipher_list
);
1378 *cipher_list
= tmp_cipher_list
;
1383 int SSL_CTX_set_ciphersuites(SSL_CTX
*ctx
, const char *str
)
1385 int ret
= set_ciphersuites(&(ctx
->tls13_ciphersuites
), str
);
1387 if (ret
&& ctx
->cipher_list
!= NULL
)
1388 return update_cipher_list(&ctx
->cipher_list
, &ctx
->cipher_list_by_id
,
1389 ctx
->tls13_ciphersuites
);
1394 int SSL_set_ciphersuites(SSL
*s
, const char *str
)
1396 STACK_OF(SSL_CIPHER
) *cipher_list
;
1397 int ret
= set_ciphersuites(&(s
->tls13_ciphersuites
), str
);
1399 if (s
->cipher_list
== NULL
) {
1400 if ((cipher_list
= SSL_get_ciphers(s
)) != NULL
)
1401 s
->cipher_list
= sk_SSL_CIPHER_dup(cipher_list
);
1403 if (ret
&& s
->cipher_list
!= NULL
)
1404 return update_cipher_list(&s
->cipher_list
, &s
->cipher_list_by_id
,
1405 s
->tls13_ciphersuites
);
1410 STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(SSL_CTX
*ctx
,
1411 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
,
1412 STACK_OF(SSL_CIPHER
) **cipher_list
,
1413 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1414 const char *rule_str
,
1417 int ok
, num_of_ciphers
, num_of_alias_max
, num_of_group_aliases
, i
;
1418 uint32_t disabled_mkey
, disabled_auth
, disabled_enc
, disabled_mac
;
1419 STACK_OF(SSL_CIPHER
) *cipherstack
;
1421 CIPHER_ORDER
*co_list
= NULL
, *head
= NULL
, *tail
= NULL
, *curr
;
1422 const SSL_CIPHER
**ca_list
= NULL
;
1423 const SSL_METHOD
*ssl_method
= ctx
->method
;
1426 * Return with error if nothing to do.
1428 if (rule_str
== NULL
|| cipher_list
== NULL
|| cipher_list_by_id
== NULL
)
1430 #ifndef OPENSSL_NO_EC
1431 if (!check_suiteb_cipher_list(ssl_method
, c
, &rule_str
))
1436 * To reduce the work to do we only want to process the compiled
1437 * in algorithms, so we first get the mask of disabled ciphers.
1440 disabled_mkey
= ctx
->disabled_mkey_mask
;
1441 disabled_auth
= ctx
->disabled_auth_mask
;
1442 disabled_enc
= ctx
->disabled_enc_mask
;
1443 disabled_mac
= ctx
->disabled_mac_mask
;
1446 * Now we have to collect the available ciphers from the compiled
1447 * in ciphers. We cannot get more than the number compiled in, so
1448 * it is used for allocation.
1450 num_of_ciphers
= ssl_method
->num_ciphers();
1452 co_list
= OPENSSL_malloc(sizeof(*co_list
) * num_of_ciphers
);
1453 if (co_list
== NULL
) {
1454 ERR_raise(ERR_LIB_SSL
, ERR_R_MALLOC_FAILURE
);
1455 return NULL
; /* Failure */
1458 ssl_cipher_collect_ciphers(ssl_method
, num_of_ciphers
,
1459 disabled_mkey
, disabled_auth
, disabled_enc
,
1460 disabled_mac
, co_list
, &head
, &tail
);
1462 /* Now arrange all ciphers by preference. */
1465 * Everything else being equal, prefer ephemeral ECDH over other key
1466 * exchange mechanisms.
1467 * For consistency, prefer ECDSA over RSA (though this only matters if the
1468 * server has both certificates, and is using the DEFAULT, or a client
1471 ssl_cipher_apply_rule(0, SSL_kECDHE
, SSL_aECDSA
, 0, 0, 0, 0, CIPHER_ADD
,
1473 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
,
1475 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
,
1478 /* Within each strength group, we prefer GCM over CHACHA... */
1479 ssl_cipher_apply_rule(0, 0, 0, SSL_AESGCM
, 0, 0, 0, CIPHER_ADD
, -1,
1481 ssl_cipher_apply_rule(0, 0, 0, SSL_CHACHA20
, 0, 0, 0, CIPHER_ADD
, -1,
1485 * ...and generally, our preferred cipher is AES.
1486 * Note that AEADs will be bumped to take preference after sorting by
1489 ssl_cipher_apply_rule(0, 0, 0, SSL_AES
^ SSL_AESGCM
, 0, 0, 0, CIPHER_ADD
,
1492 /* Temporarily enable everything else for sorting */
1493 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
, &tail
);
1495 /* Low priority for MD5 */
1496 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5
, 0, 0, CIPHER_ORD
, -1, &head
,
1500 * Move anonymous ciphers to the end. Usually, these will remain
1501 * disabled. (For applications that allow them, they aren't too bad, but
1502 * we prefer authenticated ciphers.)
1504 ssl_cipher_apply_rule(0, 0, SSL_aNULL
, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1507 ssl_cipher_apply_rule(0, SSL_kRSA
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1509 ssl_cipher_apply_rule(0, SSL_kPSK
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1512 /* RC4 is sort-of broken -- move to the end */
1513 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4
, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1517 * Now sort by symmetric encryption strength. The above ordering remains
1518 * in force within each class
1520 if (!ssl_cipher_strength_sort(&head
, &tail
)) {
1521 OPENSSL_free(co_list
);
1526 * Partially overrule strength sort to prefer TLS 1.2 ciphers/PRFs.
1527 * TODO(openssl-team): is there an easier way to accomplish all this?
1529 ssl_cipher_apply_rule(0, 0, 0, 0, 0, TLS1_2_VERSION
, 0, CIPHER_BUMP
, -1,
1533 * Irrespective of strength, enforce the following order:
1534 * (EC)DHE + AEAD > (EC)DHE > rest of AEAD > rest.
1535 * Within each group, ciphers remain sorted by strength and previous
1540 * 4) TLS 1.2 > legacy
1542 * Because we now bump ciphers to the top of the list, we proceed in
1543 * reverse order of preference.
1545 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_AEAD
, 0, 0, CIPHER_BUMP
, -1,
1547 ssl_cipher_apply_rule(0, SSL_kDHE
| SSL_kECDHE
, 0, 0, 0, 0, 0,
1548 CIPHER_BUMP
, -1, &head
, &tail
);
1549 ssl_cipher_apply_rule(0, SSL_kDHE
| SSL_kECDHE
, 0, 0, SSL_AEAD
, 0, 0,
1550 CIPHER_BUMP
, -1, &head
, &tail
);
1552 /* Now disable everything (maintaining the ordering!) */
1553 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
, &tail
);
1556 * We also need cipher aliases for selecting based on the rule_str.
1557 * There might be two types of entries in the rule_str: 1) names
1558 * of ciphers themselves 2) aliases for groups of ciphers.
1559 * For 1) we need the available ciphers and for 2) the cipher
1560 * groups of cipher_aliases added together in one list (otherwise
1561 * we would be happy with just the cipher_aliases table).
1563 num_of_group_aliases
= OSSL_NELEM(cipher_aliases
);
1564 num_of_alias_max
= num_of_ciphers
+ num_of_group_aliases
+ 1;
1565 ca_list
= OPENSSL_malloc(sizeof(*ca_list
) * num_of_alias_max
);
1566 if (ca_list
== NULL
) {
1567 OPENSSL_free(co_list
);
1568 ERR_raise(ERR_LIB_SSL
, ERR_R_MALLOC_FAILURE
);
1569 return NULL
; /* Failure */
1571 ssl_cipher_collect_aliases(ca_list
, num_of_group_aliases
,
1572 disabled_mkey
, disabled_auth
, disabled_enc
,
1573 disabled_mac
, head
);
1576 * If the rule_string begins with DEFAULT, apply the default rule
1577 * before using the (possibly available) additional rules.
1581 if (strncmp(rule_str
, "DEFAULT", 7) == 0) {
1582 ok
= ssl_cipher_process_rulestr(OSSL_default_cipher_list(),
1583 &head
, &tail
, ca_list
, c
);
1589 if (ok
&& (rule_p
[0] != '\0'))
1590 ok
= ssl_cipher_process_rulestr(rule_p
, &head
, &tail
, ca_list
, c
);
1592 OPENSSL_free(ca_list
); /* Not needed anymore */
1594 if (!ok
) { /* Rule processing failure */
1595 OPENSSL_free(co_list
);
1600 * Allocate new "cipherstack" for the result, return with error
1601 * if we cannot get one.
1603 if ((cipherstack
= sk_SSL_CIPHER_new_null()) == NULL
) {
1604 OPENSSL_free(co_list
);
1608 /* Add TLSv1.3 ciphers first - we always prefer those if possible */
1609 for (i
= 0; i
< sk_SSL_CIPHER_num(tls13_ciphersuites
); i
++) {
1610 const SSL_CIPHER
*sslc
= sk_SSL_CIPHER_value(tls13_ciphersuites
, i
);
1612 /* Don't include any TLSv1.3 ciphers that are disabled */
1613 if ((sslc
->algorithm_enc
& disabled_enc
) != 0
1614 || (ssl_cipher_table_mac
[sslc
->algorithm2
1615 & SSL_HANDSHAKE_MAC_MASK
].mask
1616 & ctx
->disabled_mac_mask
) != 0)
1619 if (!sk_SSL_CIPHER_push(cipherstack
, sslc
)) {
1620 sk_SSL_CIPHER_free(cipherstack
);
1625 OSSL_TRACE_BEGIN(TLS_CIPHER
) {
1626 BIO_printf(trc_out
, "cipher selection:\n");
1629 * The cipher selection for the list is done. The ciphers are added
1630 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1632 for (curr
= head
; curr
!= NULL
; curr
= curr
->next
) {
1634 if (!sk_SSL_CIPHER_push(cipherstack
, curr
->cipher
)) {
1635 OPENSSL_free(co_list
);
1636 sk_SSL_CIPHER_free(cipherstack
);
1637 OSSL_TRACE_CANCEL(TLS_CIPHER
);
1640 if (trc_out
!= NULL
)
1641 BIO_printf(trc_out
, "<%s>\n", curr
->cipher
->name
);
1644 OPENSSL_free(co_list
); /* Not needed any longer */
1645 OSSL_TRACE_END(TLS_CIPHER
);
1647 if (!update_cipher_list_by_id(cipher_list_by_id
, cipherstack
)) {
1648 sk_SSL_CIPHER_free(cipherstack
);
1651 sk_SSL_CIPHER_free(*cipher_list
);
1652 *cipher_list
= cipherstack
;
1657 char *SSL_CIPHER_description(const SSL_CIPHER
*cipher
, char *buf
, int len
)
1660 const char *kx
, *au
, *enc
, *mac
;
1661 uint32_t alg_mkey
, alg_auth
, alg_enc
, alg_mac
;
1662 static const char *format
= "%-30s %-7s Kx=%-8s Au=%-5s Enc=%-9s Mac=%-4s\n";
1666 if ((buf
= OPENSSL_malloc(len
)) == NULL
) {
1667 ERR_raise(ERR_LIB_SSL
, ERR_R_MALLOC_FAILURE
);
1670 } else if (len
< 128) {
1674 alg_mkey
= cipher
->algorithm_mkey
;
1675 alg_auth
= cipher
->algorithm_auth
;
1676 alg_enc
= cipher
->algorithm_enc
;
1677 alg_mac
= cipher
->algorithm_mac
;
1679 ver
= ssl_protocol_to_string(cipher
->min_tls
);
1741 /* New GOST ciphersuites have both SSL_aGOST12 and SSL_aGOST01 bits */
1742 case (SSL_aGOST12
| SSL_aGOST01
):
1779 enc
= "AESGCM(128)";
1782 enc
= "AESGCM(256)";
1785 enc
= "AESCCM(128)";
1788 enc
= "AESCCM(256)";
1790 case SSL_AES128CCM8
:
1791 enc
= "AESCCM8(128)";
1793 case SSL_AES256CCM8
:
1794 enc
= "AESCCM8(256)";
1796 case SSL_CAMELLIA128
:
1797 enc
= "Camellia(128)";
1799 case SSL_CAMELLIA256
:
1800 enc
= "Camellia(256)";
1802 case SSL_ARIA128GCM
:
1803 enc
= "ARIAGCM(128)";
1805 case SSL_ARIA256GCM
:
1806 enc
= "ARIAGCM(256)";
1811 case SSL_eGOST2814789CNT
:
1812 case SSL_eGOST2814789CNT12
:
1813 enc
= "GOST89(256)";
1818 case SSL_KUZNYECHIK
:
1821 case SSL_CHACHA20POLY1305
:
1822 enc
= "CHACHA20/POLY1305(256)";
1846 case SSL_GOST89MAC12
:
1852 case SSL_GOST12_256
:
1853 case SSL_GOST12_512
:
1861 BIO_snprintf(buf
, len
, format
, cipher
->name
, ver
, kx
, au
, enc
, mac
);
1866 const char *SSL_CIPHER_get_version(const SSL_CIPHER
*c
)
1872 * Backwards-compatibility crutch. In almost all contexts we report TLS
1873 * 1.0 as "TLSv1", but for ciphers we report "TLSv1.0".
1875 if (c
->min_tls
== TLS1_VERSION
)
1877 return ssl_protocol_to_string(c
->min_tls
);
1880 /* return the actual cipher being used */
1881 const char *SSL_CIPHER_get_name(const SSL_CIPHER
*c
)
1888 /* return the actual cipher being used in RFC standard name */
1889 const char *SSL_CIPHER_standard_name(const SSL_CIPHER
*c
)
1896 /* return the OpenSSL name based on given RFC standard name */
1897 const char *OPENSSL_cipher_name(const char *stdname
)
1899 const SSL_CIPHER
*c
;
1901 if (stdname
== NULL
)
1903 c
= ssl3_get_cipher_by_std_name(stdname
);
1904 return SSL_CIPHER_get_name(c
);
1907 /* number of bits for symmetric cipher */
1908 int SSL_CIPHER_get_bits(const SSL_CIPHER
*c
, int *alg_bits
)
1913 if (alg_bits
!= NULL
)
1914 *alg_bits
= (int)c
->alg_bits
;
1915 ret
= (int)c
->strength_bits
;
1920 uint32_t SSL_CIPHER_get_id(const SSL_CIPHER
*c
)
1925 uint16_t SSL_CIPHER_get_protocol_id(const SSL_CIPHER
*c
)
1927 return c
->id
& 0xFFFF;
1930 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
)
1935 if ((n
== 0) || (sk
== NULL
))
1937 nn
= sk_SSL_COMP_num(sk
);
1938 for (i
= 0; i
< nn
; i
++) {
1939 ctmp
= sk_SSL_COMP_value(sk
, i
);
1946 #ifdef OPENSSL_NO_COMP
1947 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1952 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1958 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1964 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1966 load_builtin_compressions();
1967 return ssl_comp_methods
;
1970 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1973 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1974 ssl_comp_methods
= meths
;
1978 static void cmeth_free(SSL_COMP
*cm
)
1983 void ssl_comp_free_compression_methods_int(void)
1985 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1986 ssl_comp_methods
= NULL
;
1987 sk_SSL_COMP_pop_free(old_meths
, cmeth_free
);
1990 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1994 if (cm
== NULL
|| COMP_get_type(cm
) == NID_undef
)
1998 * According to draft-ietf-tls-compression-04.txt, the
1999 * compression number ranges should be the following:
2001 * 0 to 63: methods defined by the IETF
2002 * 64 to 192: external party methods assigned by IANA
2003 * 193 to 255: reserved for private use
2005 if (id
< 193 || id
> 255) {
2006 ERR_raise(ERR_LIB_SSL
, SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE
);
2010 comp
= OPENSSL_malloc(sizeof(*comp
));
2012 ERR_raise(ERR_LIB_SSL
, ERR_R_MALLOC_FAILURE
);
2018 load_builtin_compressions();
2019 if (ssl_comp_methods
&& sk_SSL_COMP_find(ssl_comp_methods
, comp
) >= 0) {
2021 ERR_raise(ERR_LIB_SSL
, SSL_R_DUPLICATE_COMPRESSION_ID
);
2024 if (ssl_comp_methods
== NULL
|| !sk_SSL_COMP_push(ssl_comp_methods
, comp
)) {
2026 ERR_raise(ERR_LIB_SSL
, ERR_R_MALLOC_FAILURE
);
2033 const char *SSL_COMP_get_name(const COMP_METHOD
*comp
)
2035 #ifndef OPENSSL_NO_COMP
2036 return comp
? COMP_get_name(comp
) : NULL
;
2042 const char *SSL_COMP_get0_name(const SSL_COMP
*comp
)
2044 #ifndef OPENSSL_NO_COMP
2051 int SSL_COMP_get_id(const SSL_COMP
*comp
)
2053 #ifndef OPENSSL_NO_COMP
2060 const SSL_CIPHER
*ssl_get_cipher_by_char(SSL
*ssl
, const unsigned char *ptr
,
2063 const SSL_CIPHER
*c
= ssl
->method
->get_cipher_by_char(ptr
);
2065 if (c
== NULL
|| (!all
&& c
->valid
== 0))
2070 const SSL_CIPHER
*SSL_CIPHER_find(SSL
*ssl
, const unsigned char *ptr
)
2072 return ssl
->method
->get_cipher_by_char(ptr
);
2075 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER
*c
)
2080 i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, c
->algorithm_enc
);
2083 return ssl_cipher_table_cipher
[i
].nid
;
2086 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER
*c
)
2088 int i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
2092 return ssl_cipher_table_mac
[i
].nid
;
2095 int SSL_CIPHER_get_kx_nid(const SSL_CIPHER
*c
)
2097 int i
= ssl_cipher_info_lookup(ssl_cipher_table_kx
, c
->algorithm_mkey
);
2101 return ssl_cipher_table_kx
[i
].nid
;
2104 int SSL_CIPHER_get_auth_nid(const SSL_CIPHER
*c
)
2106 int i
= ssl_cipher_info_lookup(ssl_cipher_table_auth
, c
->algorithm_auth
);
2110 return ssl_cipher_table_auth
[i
].nid
;
2113 const EVP_MD
*SSL_CIPHER_get_handshake_digest(const SSL_CIPHER
*c
)
2115 int idx
= c
->algorithm2
& SSL_HANDSHAKE_MAC_MASK
;
2117 if (idx
< 0 || idx
>= SSL_MD_NUM_IDX
)
2119 return EVP_get_digestbynid(ssl_cipher_table_mac
[idx
].nid
);
2122 int SSL_CIPHER_is_aead(const SSL_CIPHER
*c
)
2124 return (c
->algorithm_mac
& SSL_AEAD
) ? 1 : 0;
2127 int ssl_cipher_get_overhead(const SSL_CIPHER
*c
, size_t *mac_overhead
,
2128 size_t *int_overhead
, size_t *blocksize
,
2129 size_t *ext_overhead
)
2131 size_t mac
= 0, in
= 0, blk
= 0, out
= 0;
2133 /* Some hard-coded numbers for the CCM/Poly1305 MAC overhead
2134 * because there are no handy #defines for those. */
2135 if (c
->algorithm_enc
& (SSL_AESGCM
| SSL_ARIAGCM
)) {
2136 out
= EVP_GCM_TLS_EXPLICIT_IV_LEN
+ EVP_GCM_TLS_TAG_LEN
;
2137 } else if (c
->algorithm_enc
& (SSL_AES128CCM
| SSL_AES256CCM
)) {
2138 out
= EVP_CCM_TLS_EXPLICIT_IV_LEN
+ 16;
2139 } else if (c
->algorithm_enc
& (SSL_AES128CCM8
| SSL_AES256CCM8
)) {
2140 out
= EVP_CCM_TLS_EXPLICIT_IV_LEN
+ 8;
2141 } else if (c
->algorithm_enc
& SSL_CHACHA20POLY1305
) {
2143 } else if (c
->algorithm_mac
& SSL_AEAD
) {
2144 /* We're supposed to have handled all the AEAD modes above */
2147 /* Non-AEAD modes. Calculate MAC/cipher overhead separately */
2148 int digest_nid
= SSL_CIPHER_get_digest_nid(c
);
2149 const EVP_MD
*e_md
= EVP_get_digestbynid(digest_nid
);
2154 mac
= EVP_MD_size(e_md
);
2155 if (c
->algorithm_enc
!= SSL_eNULL
) {
2156 int cipher_nid
= SSL_CIPHER_get_cipher_nid(c
);
2157 const EVP_CIPHER
*e_ciph
= EVP_get_cipherbynid(cipher_nid
);
2159 /* If it wasn't AEAD or SSL_eNULL, we expect it to be a
2160 known CBC cipher. */
2161 if (e_ciph
== NULL
||
2162 EVP_CIPHER_mode(e_ciph
) != EVP_CIPH_CBC_MODE
)
2165 in
= 1; /* padding length byte */
2166 out
= EVP_CIPHER_iv_length(e_ciph
);
2167 blk
= EVP_CIPHER_block_size(e_ciph
);
2171 *mac_overhead
= mac
;
2174 *ext_overhead
= out
;
2179 int ssl_cert_is_disabled(SSL_CTX
*ctx
, size_t idx
)
2181 const SSL_CERT_LOOKUP
*cl
= ssl_cert_lookup_by_idx(idx
);
2183 if (cl
== NULL
|| (cl
->amask
& ctx
->disabled_auth_mask
) != 0)
2189 * Default list of TLSv1.2 (and earlier) ciphers
2190 * SSL_DEFAULT_CIPHER_LIST deprecated in 3.0.0
2191 * Update both macro and function simultaneously
2193 const char *OSSL_default_cipher_list(void)
2195 return "ALL:!COMPLEMENTOFDEFAULT:!eNULL";
2199 * Default list of TLSv1.3 (and later) ciphers
2200 * TLS_DEFAULT_CIPHERSUITES deprecated in 3.0.0
2201 * Update both macro and function simultaneously
2203 const char *OSSL_default_ciphersuites(void)
2205 return "TLS_AES_256_GCM_SHA384:"
2206 #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
2207 "TLS_CHACHA20_POLY1305_SHA256:"
2209 "TLS_AES_128_GCM_SHA256";