2 * Copyright 1995-2020 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 DEFINE_STACK_OF(SSL_COMP
)
26 DEFINE_STACK_OF_CONST(SSL_CIPHER
)
28 /* NB: make sure indices in these tables match values above */
35 /* Table of NIDs for each cipher */
36 static const ssl_cipher_table ssl_cipher_table_cipher
[SSL_ENC_NUM_IDX
] = {
37 {SSL_DES
, NID_des_cbc
}, /* SSL_ENC_DES_IDX 0 */
38 {SSL_3DES
, NID_des_ede3_cbc
}, /* SSL_ENC_3DES_IDX 1 */
39 {SSL_RC4
, NID_rc4
}, /* SSL_ENC_RC4_IDX 2 */
40 {SSL_RC2
, NID_rc2_cbc
}, /* SSL_ENC_RC2_IDX 3 */
41 {SSL_IDEA
, NID_idea_cbc
}, /* SSL_ENC_IDEA_IDX 4 */
42 {SSL_eNULL
, NID_undef
}, /* SSL_ENC_NULL_IDX 5 */
43 {SSL_AES128
, NID_aes_128_cbc
}, /* SSL_ENC_AES128_IDX 6 */
44 {SSL_AES256
, NID_aes_256_cbc
}, /* SSL_ENC_AES256_IDX 7 */
45 {SSL_CAMELLIA128
, NID_camellia_128_cbc
}, /* SSL_ENC_CAMELLIA128_IDX 8 */
46 {SSL_CAMELLIA256
, NID_camellia_256_cbc
}, /* SSL_ENC_CAMELLIA256_IDX 9 */
47 {SSL_eGOST2814789CNT
, NID_gost89_cnt
}, /* SSL_ENC_GOST89_IDX 10 */
48 {SSL_SEED
, NID_seed_cbc
}, /* SSL_ENC_SEED_IDX 11 */
49 {SSL_AES128GCM
, NID_aes_128_gcm
}, /* SSL_ENC_AES128GCM_IDX 12 */
50 {SSL_AES256GCM
, NID_aes_256_gcm
}, /* SSL_ENC_AES256GCM_IDX 13 */
51 {SSL_AES128CCM
, NID_aes_128_ccm
}, /* SSL_ENC_AES128CCM_IDX 14 */
52 {SSL_AES256CCM
, NID_aes_256_ccm
}, /* SSL_ENC_AES256CCM_IDX 15 */
53 {SSL_AES128CCM8
, NID_aes_128_ccm
}, /* SSL_ENC_AES128CCM8_IDX 16 */
54 {SSL_AES256CCM8
, NID_aes_256_ccm
}, /* SSL_ENC_AES256CCM8_IDX 17 */
55 {SSL_eGOST2814789CNT12
, NID_gost89_cnt_12
}, /* SSL_ENC_GOST8912_IDX 18 */
56 {SSL_CHACHA20POLY1305
, NID_chacha20_poly1305
}, /* SSL_ENC_CHACHA_IDX 19 */
57 {SSL_ARIA128GCM
, NID_aria_128_gcm
}, /* SSL_ENC_ARIA128GCM_IDX 20 */
58 {SSL_ARIA256GCM
, NID_aria_256_gcm
}, /* SSL_ENC_ARIA256GCM_IDX 21 */
61 #define SSL_COMP_NULL_IDX 0
62 #define SSL_COMP_ZLIB_IDX 1
63 #define SSL_COMP_NUM_IDX 2
65 static STACK_OF(SSL_COMP
) *ssl_comp_methods
= NULL
;
67 #ifndef OPENSSL_NO_COMP
68 static CRYPTO_ONCE ssl_load_builtin_comp_once
= CRYPTO_ONCE_STATIC_INIT
;
71 /* NB: make sure indices in this table matches values above */
72 static const ssl_cipher_table ssl_cipher_table_mac
[SSL_MD_NUM_IDX
] = {
73 {SSL_MD5
, NID_md5
}, /* SSL_MD_MD5_IDX 0 */
74 {SSL_SHA1
, NID_sha1
}, /* SSL_MD_SHA1_IDX 1 */
75 {SSL_GOST94
, NID_id_GostR3411_94
}, /* SSL_MD_GOST94_IDX 2 */
76 {SSL_GOST89MAC
, NID_id_Gost28147_89_MAC
}, /* SSL_MD_GOST89MAC_IDX 3 */
77 {SSL_SHA256
, NID_sha256
}, /* SSL_MD_SHA256_IDX 4 */
78 {SSL_SHA384
, NID_sha384
}, /* SSL_MD_SHA384_IDX 5 */
79 {SSL_GOST12_256
, NID_id_GostR3411_2012_256
}, /* SSL_MD_GOST12_256_IDX 6 */
80 {SSL_GOST89MAC12
, NID_gost_mac_12
}, /* SSL_MD_GOST89MAC12_IDX 7 */
81 {SSL_GOST12_512
, NID_id_GostR3411_2012_512
}, /* SSL_MD_GOST12_512_IDX 8 */
82 {0, NID_md5_sha1
}, /* SSL_MD_MD5_SHA1_IDX 9 */
83 {0, NID_sha224
}, /* SSL_MD_SHA224_IDX 10 */
84 {0, NID_sha512
} /* SSL_MD_SHA512_IDX 11 */
88 static const ssl_cipher_table ssl_cipher_table_kx
[] = {
89 {SSL_kRSA
, NID_kx_rsa
},
90 {SSL_kECDHE
, NID_kx_ecdhe
},
91 {SSL_kDHE
, NID_kx_dhe
},
92 {SSL_kECDHEPSK
, NID_kx_ecdhe_psk
},
93 {SSL_kDHEPSK
, NID_kx_dhe_psk
},
94 {SSL_kRSAPSK
, NID_kx_rsa_psk
},
95 {SSL_kPSK
, NID_kx_psk
},
96 {SSL_kSRP
, NID_kx_srp
},
97 {SSL_kGOST
, NID_kx_gost
},
98 {SSL_kANY
, NID_kx_any
}
101 static const ssl_cipher_table ssl_cipher_table_auth
[] = {
102 {SSL_aRSA
, NID_auth_rsa
},
103 {SSL_aECDSA
, NID_auth_ecdsa
},
104 {SSL_aPSK
, NID_auth_psk
},
105 {SSL_aDSS
, NID_auth_dss
},
106 {SSL_aGOST01
, NID_auth_gost01
},
107 {SSL_aGOST12
, NID_auth_gost12
},
108 {SSL_aSRP
, NID_auth_srp
},
109 {SSL_aNULL
, NID_auth_null
},
110 {SSL_aANY
, NID_auth_any
}
114 /* Utility function for table lookup */
115 static int ssl_cipher_info_find(const ssl_cipher_table
* table
,
116 size_t table_cnt
, uint32_t mask
)
119 for (i
= 0; i
< table_cnt
; i
++, table
++) {
120 if (table
->mask
== mask
)
126 #define ssl_cipher_info_lookup(table, x) \
127 ssl_cipher_info_find(table, OSSL_NELEM(table), x)
130 * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation
131 * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is
134 static int ssl_mac_pkey_id
[SSL_MD_NUM_IDX
] = {
135 /* MD5, SHA, GOST94, MAC89 */
136 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, NID_undef
,
137 /* SHA256, SHA384, GOST2012_256, MAC89-12 */
138 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, NID_undef
,
141 /* MD5/SHA1, SHA224, SHA512 */
142 NID_undef
, NID_undef
, NID_undef
146 #define CIPHER_KILL 2
149 #define CIPHER_SPECIAL 5
151 * Bump the ciphers to the top of the list.
152 * This rule isn't currently supported by the public cipherstring API.
154 #define CIPHER_BUMP 6
156 typedef struct cipher_order_st
{
157 const SSL_CIPHER
*cipher
;
160 struct cipher_order_st
*next
, *prev
;
163 static const SSL_CIPHER cipher_aliases
[] = {
164 /* "ALL" doesn't include eNULL (must be specifically enabled) */
165 {0, SSL_TXT_ALL
, NULL
, 0, 0, 0, ~SSL_eNULL
},
166 /* "COMPLEMENTOFALL" */
167 {0, SSL_TXT_CMPALL
, NULL
, 0, 0, 0, SSL_eNULL
},
170 * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in
173 {0, SSL_TXT_CMPDEF
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_NOT_DEFAULT
},
176 * key exchange aliases (some of those using only a single bit here
177 * combine multiple key exchange algs according to the RFCs, e.g. kDHE
178 * combines DHE_DSS and DHE_RSA)
180 {0, SSL_TXT_kRSA
, NULL
, 0, SSL_kRSA
},
182 {0, SSL_TXT_kEDH
, NULL
, 0, SSL_kDHE
},
183 {0, SSL_TXT_kDHE
, NULL
, 0, SSL_kDHE
},
184 {0, SSL_TXT_DH
, NULL
, 0, SSL_kDHE
},
186 {0, SSL_TXT_kEECDH
, NULL
, 0, SSL_kECDHE
},
187 {0, SSL_TXT_kECDHE
, NULL
, 0, SSL_kECDHE
},
188 {0, SSL_TXT_ECDH
, NULL
, 0, SSL_kECDHE
},
190 {0, SSL_TXT_kPSK
, NULL
, 0, SSL_kPSK
},
191 {0, SSL_TXT_kRSAPSK
, NULL
, 0, SSL_kRSAPSK
},
192 {0, SSL_TXT_kECDHEPSK
, NULL
, 0, SSL_kECDHEPSK
},
193 {0, SSL_TXT_kDHEPSK
, NULL
, 0, SSL_kDHEPSK
},
194 {0, SSL_TXT_kSRP
, NULL
, 0, SSL_kSRP
},
195 {0, SSL_TXT_kGOST
, NULL
, 0, SSL_kGOST
},
197 /* server authentication aliases */
198 {0, SSL_TXT_aRSA
, NULL
, 0, 0, SSL_aRSA
},
199 {0, SSL_TXT_aDSS
, NULL
, 0, 0, SSL_aDSS
},
200 {0, SSL_TXT_DSS
, NULL
, 0, 0, SSL_aDSS
},
201 {0, SSL_TXT_aNULL
, NULL
, 0, 0, SSL_aNULL
},
202 {0, SSL_TXT_aECDSA
, NULL
, 0, 0, SSL_aECDSA
},
203 {0, SSL_TXT_ECDSA
, NULL
, 0, 0, SSL_aECDSA
},
204 {0, SSL_TXT_aPSK
, NULL
, 0, 0, SSL_aPSK
},
205 {0, SSL_TXT_aGOST01
, NULL
, 0, 0, SSL_aGOST01
},
206 {0, SSL_TXT_aGOST12
, NULL
, 0, 0, SSL_aGOST12
},
207 {0, SSL_TXT_aGOST
, NULL
, 0, 0, SSL_aGOST01
| SSL_aGOST12
},
208 {0, SSL_TXT_aSRP
, NULL
, 0, 0, SSL_aSRP
},
210 /* aliases combining key exchange and server authentication */
211 {0, SSL_TXT_EDH
, NULL
, 0, SSL_kDHE
, ~SSL_aNULL
},
212 {0, SSL_TXT_DHE
, NULL
, 0, SSL_kDHE
, ~SSL_aNULL
},
213 {0, SSL_TXT_EECDH
, NULL
, 0, SSL_kECDHE
, ~SSL_aNULL
},
214 {0, SSL_TXT_ECDHE
, NULL
, 0, SSL_kECDHE
, ~SSL_aNULL
},
215 {0, SSL_TXT_NULL
, NULL
, 0, 0, 0, SSL_eNULL
},
216 {0, SSL_TXT_RSA
, NULL
, 0, SSL_kRSA
, SSL_aRSA
},
217 {0, SSL_TXT_ADH
, NULL
, 0, SSL_kDHE
, SSL_aNULL
},
218 {0, SSL_TXT_AECDH
, NULL
, 0, SSL_kECDHE
, SSL_aNULL
},
219 {0, SSL_TXT_PSK
, NULL
, 0, SSL_PSK
},
220 {0, SSL_TXT_SRP
, NULL
, 0, SSL_kSRP
},
222 /* symmetric encryption aliases */
223 {0, SSL_TXT_3DES
, NULL
, 0, 0, 0, SSL_3DES
},
224 {0, SSL_TXT_RC4
, NULL
, 0, 0, 0, SSL_RC4
},
225 {0, SSL_TXT_RC2
, NULL
, 0, 0, 0, SSL_RC2
},
226 {0, SSL_TXT_IDEA
, NULL
, 0, 0, 0, SSL_IDEA
},
227 {0, SSL_TXT_SEED
, NULL
, 0, 0, 0, SSL_SEED
},
228 {0, SSL_TXT_eNULL
, NULL
, 0, 0, 0, SSL_eNULL
},
229 {0, SSL_TXT_GOST
, NULL
, 0, 0, 0, SSL_eGOST2814789CNT
| SSL_eGOST2814789CNT12
},
230 {0, SSL_TXT_AES128
, NULL
, 0, 0, 0,
231 SSL_AES128
| SSL_AES128GCM
| SSL_AES128CCM
| SSL_AES128CCM8
},
232 {0, SSL_TXT_AES256
, NULL
, 0, 0, 0,
233 SSL_AES256
| SSL_AES256GCM
| SSL_AES256CCM
| SSL_AES256CCM8
},
234 {0, SSL_TXT_AES
, NULL
, 0, 0, 0, SSL_AES
},
235 {0, SSL_TXT_AES_GCM
, NULL
, 0, 0, 0, SSL_AES128GCM
| SSL_AES256GCM
},
236 {0, SSL_TXT_AES_CCM
, NULL
, 0, 0, 0,
237 SSL_AES128CCM
| SSL_AES256CCM
| SSL_AES128CCM8
| SSL_AES256CCM8
},
238 {0, SSL_TXT_AES_CCM_8
, NULL
, 0, 0, 0, SSL_AES128CCM8
| SSL_AES256CCM8
},
239 {0, SSL_TXT_CAMELLIA128
, NULL
, 0, 0, 0, SSL_CAMELLIA128
},
240 {0, SSL_TXT_CAMELLIA256
, NULL
, 0, 0, 0, SSL_CAMELLIA256
},
241 {0, SSL_TXT_CAMELLIA
, NULL
, 0, 0, 0, SSL_CAMELLIA
},
242 {0, SSL_TXT_CHACHA20
, NULL
, 0, 0, 0, SSL_CHACHA20
},
243 {0, SSL_TXT_GOST2012_GOST8912_GOST8912
, NULL
, 0, 0, 0, SSL_eGOST2814789CNT12
},
245 {0, SSL_TXT_ARIA
, NULL
, 0, 0, 0, SSL_ARIA
},
246 {0, SSL_TXT_ARIA_GCM
, NULL
, 0, 0, 0, SSL_ARIA128GCM
| SSL_ARIA256GCM
},
247 {0, SSL_TXT_ARIA128
, NULL
, 0, 0, 0, SSL_ARIA128GCM
},
248 {0, SSL_TXT_ARIA256
, NULL
, 0, 0, 0, SSL_ARIA256GCM
},
251 {0, SSL_TXT_MD5
, NULL
, 0, 0, 0, 0, SSL_MD5
},
252 {0, SSL_TXT_SHA1
, NULL
, 0, 0, 0, 0, SSL_SHA1
},
253 {0, SSL_TXT_SHA
, NULL
, 0, 0, 0, 0, SSL_SHA1
},
254 {0, SSL_TXT_GOST94
, NULL
, 0, 0, 0, 0, SSL_GOST94
},
255 {0, SSL_TXT_GOST89MAC
, NULL
, 0, 0, 0, 0, SSL_GOST89MAC
| SSL_GOST89MAC12
},
256 {0, SSL_TXT_SHA256
, NULL
, 0, 0, 0, 0, SSL_SHA256
},
257 {0, SSL_TXT_SHA384
, NULL
, 0, 0, 0, 0, SSL_SHA384
},
258 {0, SSL_TXT_GOST12
, NULL
, 0, 0, 0, 0, SSL_GOST12_256
},
260 /* protocol version aliases */
261 {0, SSL_TXT_SSLV3
, NULL
, 0, 0, 0, 0, 0, SSL3_VERSION
},
262 {0, SSL_TXT_TLSV1
, NULL
, 0, 0, 0, 0, 0, TLS1_VERSION
},
263 {0, "TLSv1.0", NULL
, 0, 0, 0, 0, 0, TLS1_VERSION
},
264 {0, SSL_TXT_TLSV1_2
, NULL
, 0, 0, 0, 0, 0, TLS1_2_VERSION
},
266 /* strength classes */
267 {0, SSL_TXT_LOW
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_LOW
},
268 {0, SSL_TXT_MEDIUM
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_MEDIUM
},
269 {0, SSL_TXT_HIGH
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_HIGH
},
270 /* FIPS 140-2 approved ciphersuite */
271 {0, SSL_TXT_FIPS
, NULL
, 0, 0, 0, ~SSL_eNULL
, 0, 0, 0, 0, 0, SSL_FIPS
},
273 /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */
274 {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA
, NULL
, 0,
275 SSL_kDHE
, SSL_aDSS
, SSL_3DES
, SSL_SHA1
, 0, 0, 0, 0, SSL_HIGH
| SSL_FIPS
},
276 {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA
, NULL
, 0,
277 SSL_kDHE
, SSL_aRSA
, SSL_3DES
, SSL_SHA1
, 0, 0, 0, 0, SSL_HIGH
| SSL_FIPS
},
282 * Search for public key algorithm with given name and return its pkey_id if
283 * it is available. Otherwise return 0
285 #ifdef OPENSSL_NO_ENGINE
287 static int get_optional_pkey_id(const char *pkey_name
)
289 const EVP_PKEY_ASN1_METHOD
*ameth
;
291 ameth
= EVP_PKEY_asn1_find_str(NULL
, pkey_name
, -1);
292 if (ameth
&& EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
,
300 static int get_optional_pkey_id(const char *pkey_name
)
302 const EVP_PKEY_ASN1_METHOD
*ameth
;
303 ENGINE
*tmpeng
= NULL
;
305 ameth
= EVP_PKEY_asn1_find_str(&tmpeng
, pkey_name
, -1);
307 if (EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
,
311 ENGINE_finish(tmpeng
);
317 /* masks of disabled algorithms */
318 static uint32_t disabled_enc_mask
;
319 static uint32_t disabled_mac_mask
;
320 static uint32_t disabled_mkey_mask
;
321 static uint32_t disabled_auth_mask
;
323 int ssl_load_ciphers(SSL_CTX
*ctx
)
326 const ssl_cipher_table
*t
;
328 disabled_enc_mask
= 0;
329 for (i
= 0, t
= ssl_cipher_table_cipher
; i
< SSL_ENC_NUM_IDX
; i
++, t
++) {
330 if (t
->nid
!= NID_undef
) {
331 const EVP_CIPHER
*cipher
332 = ssl_evp_cipher_fetch(ctx
->libctx
, t
->nid
, ctx
->propq
);
334 ctx
->ssl_cipher_methods
[i
] = cipher
;
336 disabled_enc_mask
|= t
->mask
;
339 disabled_mac_mask
= 0;
340 for (i
= 0, t
= ssl_cipher_table_mac
; i
< SSL_MD_NUM_IDX
; i
++, t
++) {
342 = ssl_evp_md_fetch(ctx
->libctx
, t
->nid
, ctx
->propq
);
344 ctx
->ssl_digest_methods
[i
] = md
;
346 disabled_mac_mask
|= t
->mask
;
348 int tmpsize
= EVP_MD_size(md
);
349 if (!ossl_assert(tmpsize
>= 0))
351 ctx
->ssl_mac_secret_size
[i
] = tmpsize
;
355 disabled_mkey_mask
= 0;
356 disabled_auth_mask
= 0;
358 #ifdef OPENSSL_NO_RSA
359 disabled_mkey_mask
|= SSL_kRSA
| SSL_kRSAPSK
;
360 disabled_auth_mask
|= SSL_aRSA
;
362 #ifdef OPENSSL_NO_DSA
363 disabled_auth_mask
|= SSL_aDSS
;
366 disabled_mkey_mask
|= SSL_kDHE
| SSL_kDHEPSK
;
369 disabled_mkey_mask
|= SSL_kECDHE
| SSL_kECDHEPSK
;
370 disabled_auth_mask
|= SSL_aECDSA
;
372 #ifdef OPENSSL_NO_PSK
373 disabled_mkey_mask
|= SSL_PSK
;
374 disabled_auth_mask
|= SSL_aPSK
;
376 #ifdef OPENSSL_NO_SRP
377 disabled_mkey_mask
|= SSL_kSRP
;
381 * Check for presence of GOST 34.10 algorithms, and if they are not
382 * present, disable appropriate auth and key exchange
384 ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
] = get_optional_pkey_id("gost-mac");
385 if (ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
])
386 ctx
->ssl_mac_secret_size
[SSL_MD_GOST89MAC_IDX
] = 32;
388 disabled_mac_mask
|= SSL_GOST89MAC
;
390 ssl_mac_pkey_id
[SSL_MD_GOST89MAC12_IDX
] =
391 get_optional_pkey_id("gost-mac-12");
392 if (ssl_mac_pkey_id
[SSL_MD_GOST89MAC12_IDX
])
393 ctx
->ssl_mac_secret_size
[SSL_MD_GOST89MAC12_IDX
] = 32;
395 disabled_mac_mask
|= SSL_GOST89MAC12
;
397 if (!get_optional_pkey_id("gost2001"))
398 disabled_auth_mask
|= SSL_aGOST01
| SSL_aGOST12
;
399 if (!get_optional_pkey_id("gost2012_256"))
400 disabled_auth_mask
|= SSL_aGOST12
;
401 if (!get_optional_pkey_id("gost2012_512"))
402 disabled_auth_mask
|= SSL_aGOST12
;
404 * Disable GOST key exchange if no GOST signature algs are available *
406 if ((disabled_auth_mask
& (SSL_aGOST01
| SSL_aGOST12
)) ==
407 (SSL_aGOST01
| SSL_aGOST12
))
408 disabled_mkey_mask
|= SSL_kGOST
;
413 #ifndef OPENSSL_NO_COMP
415 static int sk_comp_cmp(const SSL_COMP
*const *a
, const SSL_COMP
*const *b
)
417 return ((*a
)->id
- (*b
)->id
);
420 DEFINE_RUN_ONCE_STATIC(do_load_builtin_compressions
)
422 SSL_COMP
*comp
= NULL
;
423 COMP_METHOD
*method
= COMP_zlib();
425 ssl_comp_methods
= sk_SSL_COMP_new(sk_comp_cmp
);
427 if (COMP_get_type(method
) != NID_undef
&& ssl_comp_methods
!= NULL
) {
428 comp
= OPENSSL_malloc(sizeof(*comp
));
430 comp
->method
= method
;
431 comp
->id
= SSL_COMP_ZLIB_IDX
;
432 comp
->name
= COMP_get_name(method
);
433 sk_SSL_COMP_push(ssl_comp_methods
, comp
);
434 sk_SSL_COMP_sort(ssl_comp_methods
);
440 static int load_builtin_compressions(void)
442 return RUN_ONCE(&ssl_load_builtin_comp_once
, do_load_builtin_compressions
);
446 int ssl_cipher_get_evp_cipher(SSL_CTX
*ctx
, const SSL_CIPHER
*sslc
,
447 const EVP_CIPHER
**enc
)
449 int i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, sslc
->algorithm_enc
);
454 if (i
== SSL_ENC_NULL_IDX
) {
456 * We assume we don't care about this coming from an ENGINE so
457 * just do a normal EVP_CIPHER_fetch instead of
458 * ssl_evp_cipher_fetch()
460 *enc
= EVP_CIPHER_fetch(ctx
->libctx
, "NULL", ctx
->propq
);
464 const EVP_CIPHER
*cipher
= ctx
->ssl_cipher_methods
[i
];
467 || !ssl_evp_cipher_up_ref(cipher
))
469 *enc
= ctx
->ssl_cipher_methods
[i
];
475 int ssl_cipher_get_evp(SSL_CTX
*ctx
, const SSL_SESSION
*s
,
476 const EVP_CIPHER
**enc
, const EVP_MD
**md
,
477 int *mac_pkey_type
, size_t *mac_secret_size
,
478 SSL_COMP
**comp
, int use_etm
)
488 #ifndef OPENSSL_NO_COMP
489 if (!load_builtin_compressions()) {
491 * Currently don't care, since a failure only means that
492 * ssl_comp_methods is NULL, which is perfectly OK
497 ctmp
.id
= s
->compress_meth
;
498 if (ssl_comp_methods
!= NULL
) {
499 i
= sk_SSL_COMP_find(ssl_comp_methods
, &ctmp
);
500 *comp
= sk_SSL_COMP_value(ssl_comp_methods
, i
);
502 /* If were only interested in comp then return success */
503 if ((enc
== NULL
) && (md
== NULL
))
507 if ((enc
== NULL
) || (md
== NULL
))
510 if (!ssl_cipher_get_evp_cipher(ctx
, c
, enc
))
513 i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
516 if (mac_pkey_type
!= NULL
)
517 *mac_pkey_type
= NID_undef
;
518 if (mac_secret_size
!= NULL
)
519 *mac_secret_size
= 0;
520 if (c
->algorithm_mac
== SSL_AEAD
)
521 mac_pkey_type
= NULL
;
523 if (!ssl_evp_md_up_ref(ctx
->ssl_digest_methods
[i
])) {
524 ssl_evp_cipher_free(*enc
);
527 *md
= ctx
->ssl_digest_methods
[i
];
528 if (mac_pkey_type
!= NULL
)
529 *mac_pkey_type
= ssl_mac_pkey_id
[i
];
530 if (mac_secret_size
!= NULL
)
531 *mac_secret_size
= ctx
->ssl_mac_secret_size
[i
];
534 if ((*enc
!= NULL
) &&
535 (*md
!= NULL
|| (EVP_CIPHER_flags(*enc
) & EVP_CIPH_FLAG_AEAD_CIPHER
))
536 && (!mac_pkey_type
|| *mac_pkey_type
!= NID_undef
)) {
537 const EVP_CIPHER
*evp
= NULL
;
540 || s
->ssl_version
>> 8 != TLS1_VERSION_MAJOR
541 || s
->ssl_version
< TLS1_VERSION
)
544 if (c
->algorithm_enc
== SSL_RC4
545 && c
->algorithm_mac
== SSL_MD5
)
546 evp
= ssl_evp_cipher_fetch(ctx
->libctx
, NID_rc4_hmac_md5
,
548 else if (c
->algorithm_enc
== SSL_AES128
549 && c
->algorithm_mac
== SSL_SHA1
)
550 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
551 NID_aes_128_cbc_hmac_sha1
,
553 else if (c
->algorithm_enc
== SSL_AES256
554 && c
->algorithm_mac
== SSL_SHA1
)
555 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
556 NID_aes_256_cbc_hmac_sha1
,
558 else if (c
->algorithm_enc
== SSL_AES128
559 && c
->algorithm_mac
== SSL_SHA256
)
560 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
561 NID_aes_128_cbc_hmac_sha256
,
563 else if (c
->algorithm_enc
== SSL_AES256
564 && c
->algorithm_mac
== SSL_SHA256
)
565 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
566 NID_aes_256_cbc_hmac_sha256
,
570 ssl_evp_cipher_free(*enc
);
571 ssl_evp_md_free(*md
);
581 const EVP_MD
*ssl_md(SSL_CTX
*ctx
, int idx
)
583 idx
&= SSL_HANDSHAKE_MAC_MASK
;
584 if (idx
< 0 || idx
>= SSL_MD_NUM_IDX
)
586 return ctx
->ssl_digest_methods
[idx
];
589 const EVP_MD
*ssl_handshake_md(SSL
*s
)
591 return ssl_md(s
->ctx
, ssl_get_algorithm2(s
));
594 const EVP_MD
*ssl_prf_md(SSL
*s
)
596 return ssl_md(s
->ctx
, ssl_get_algorithm2(s
) >> TLS1_PRF_DGST_SHIFT
);
599 #define ITEM_SEP(a) \
600 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
602 static void ll_append_tail(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
609 if (curr
->prev
!= NULL
)
610 curr
->prev
->next
= curr
->next
;
611 if (curr
->next
!= NULL
)
612 curr
->next
->prev
= curr
->prev
;
613 (*tail
)->next
= curr
;
619 static void ll_append_head(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
626 if (curr
->next
!= NULL
)
627 curr
->next
->prev
= curr
->prev
;
628 if (curr
->prev
!= NULL
)
629 curr
->prev
->next
= curr
->next
;
630 (*head
)->prev
= curr
;
636 static void ssl_cipher_collect_ciphers(const SSL_METHOD
*ssl_method
,
638 uint32_t disabled_mkey
,
639 uint32_t disabled_auth
,
640 uint32_t disabled_enc
,
641 uint32_t disabled_mac
,
642 CIPHER_ORDER
*co_list
,
643 CIPHER_ORDER
**head_p
,
644 CIPHER_ORDER
**tail_p
)
650 * We have num_of_ciphers descriptions compiled in, depending on the
651 * method selected (SSLv3, TLSv1 etc).
652 * These will later be sorted in a linked list with at most num
656 /* Get the initial list of ciphers */
657 co_list_num
= 0; /* actual count of ciphers */
658 for (i
= 0; i
< num_of_ciphers
; i
++) {
659 c
= ssl_method
->get_cipher(i
);
660 /* drop those that use any of that is not available */
661 if (c
== NULL
|| !c
->valid
)
663 if ((c
->algorithm_mkey
& disabled_mkey
) ||
664 (c
->algorithm_auth
& disabled_auth
) ||
665 (c
->algorithm_enc
& disabled_enc
) ||
666 (c
->algorithm_mac
& disabled_mac
))
668 if (((ssl_method
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
) == 0) &&
671 if (((ssl_method
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
) != 0) &&
675 co_list
[co_list_num
].cipher
= c
;
676 co_list
[co_list_num
].next
= NULL
;
677 co_list
[co_list_num
].prev
= NULL
;
678 co_list
[co_list_num
].active
= 0;
683 * Prepare linked list from list entries
685 if (co_list_num
> 0) {
686 co_list
[0].prev
= NULL
;
688 if (co_list_num
> 1) {
689 co_list
[0].next
= &co_list
[1];
691 for (i
= 1; i
< co_list_num
- 1; i
++) {
692 co_list
[i
].prev
= &co_list
[i
- 1];
693 co_list
[i
].next
= &co_list
[i
+ 1];
696 co_list
[co_list_num
- 1].prev
= &co_list
[co_list_num
- 2];
699 co_list
[co_list_num
- 1].next
= NULL
;
701 *head_p
= &co_list
[0];
702 *tail_p
= &co_list
[co_list_num
- 1];
706 static void ssl_cipher_collect_aliases(const SSL_CIPHER
**ca_list
,
707 int num_of_group_aliases
,
708 uint32_t disabled_mkey
,
709 uint32_t disabled_auth
,
710 uint32_t disabled_enc
,
711 uint32_t disabled_mac
,
714 CIPHER_ORDER
*ciph_curr
;
715 const SSL_CIPHER
**ca_curr
;
717 uint32_t mask_mkey
= ~disabled_mkey
;
718 uint32_t mask_auth
= ~disabled_auth
;
719 uint32_t mask_enc
= ~disabled_enc
;
720 uint32_t mask_mac
= ~disabled_mac
;
723 * First, add the real ciphers as already collected
727 while (ciph_curr
!= NULL
) {
728 *ca_curr
= ciph_curr
->cipher
;
730 ciph_curr
= ciph_curr
->next
;
734 * Now we add the available ones from the cipher_aliases[] table.
735 * They represent either one or more algorithms, some of which
736 * in any affected category must be supported (set in enabled_mask),
737 * or represent a cipher strength value (will be added in any case because algorithms=0).
739 for (i
= 0; i
< num_of_group_aliases
; i
++) {
740 uint32_t algorithm_mkey
= cipher_aliases
[i
].algorithm_mkey
;
741 uint32_t algorithm_auth
= cipher_aliases
[i
].algorithm_auth
;
742 uint32_t algorithm_enc
= cipher_aliases
[i
].algorithm_enc
;
743 uint32_t algorithm_mac
= cipher_aliases
[i
].algorithm_mac
;
746 if ((algorithm_mkey
& mask_mkey
) == 0)
750 if ((algorithm_auth
& mask_auth
) == 0)
754 if ((algorithm_enc
& mask_enc
) == 0)
758 if ((algorithm_mac
& mask_mac
) == 0)
761 *ca_curr
= (SSL_CIPHER
*)(cipher_aliases
+ i
);
765 *ca_curr
= NULL
; /* end of list */
768 static void ssl_cipher_apply_rule(uint32_t cipher_id
, uint32_t alg_mkey
,
769 uint32_t alg_auth
, uint32_t alg_enc
,
770 uint32_t alg_mac
, int min_tls
,
771 uint32_t algo_strength
, int rule
,
772 int32_t strength_bits
, CIPHER_ORDER
**head_p
,
773 CIPHER_ORDER
**tail_p
)
775 CIPHER_ORDER
*head
, *tail
, *curr
, *next
, *last
;
776 const SSL_CIPHER
*cp
;
779 OSSL_TRACE_BEGIN(TLS_CIPHER
){
781 "Applying rule %d with %08x/%08x/%08x/%08x/%08x %08x (%d)\n",
782 rule
, alg_mkey
, alg_auth
, alg_enc
, alg_mac
, min_tls
,
783 algo_strength
, strength_bits
);
786 if (rule
== CIPHER_DEL
|| rule
== CIPHER_BUMP
)
787 reverse
= 1; /* needed to maintain sorting between currently
811 next
= reverse
? curr
->prev
: curr
->next
;
816 * Selection criteria is either the value of strength_bits
817 * or the algorithms used.
819 if (strength_bits
>= 0) {
820 if (strength_bits
!= cp
->strength_bits
)
823 if (trc_out
!= NULL
) {
826 "\nAlgo = %08x/%08x/%08x/%08x/%08x Algo_strength = %08x\n",
827 cp
->name
, cp
->algorithm_mkey
, cp
->algorithm_auth
,
828 cp
->algorithm_enc
, cp
->algorithm_mac
, cp
->min_tls
,
831 if (cipher_id
!= 0 && (cipher_id
!= cp
->id
))
833 if (alg_mkey
&& !(alg_mkey
& cp
->algorithm_mkey
))
835 if (alg_auth
&& !(alg_auth
& cp
->algorithm_auth
))
837 if (alg_enc
&& !(alg_enc
& cp
->algorithm_enc
))
839 if (alg_mac
&& !(alg_mac
& cp
->algorithm_mac
))
841 if (min_tls
&& (min_tls
!= cp
->min_tls
))
843 if ((algo_strength
& SSL_STRONG_MASK
)
844 && !(algo_strength
& SSL_STRONG_MASK
& cp
->algo_strength
))
846 if ((algo_strength
& SSL_DEFAULT_MASK
)
847 && !(algo_strength
& SSL_DEFAULT_MASK
& cp
->algo_strength
))
852 BIO_printf(trc_out
, "Action = %d\n", rule
);
854 /* add the cipher if it has not been added yet. */
855 if (rule
== CIPHER_ADD
) {
858 ll_append_tail(&head
, curr
, &tail
);
862 /* Move the added cipher to this location */
863 else if (rule
== CIPHER_ORD
) {
866 ll_append_tail(&head
, curr
, &tail
);
868 } else if (rule
== CIPHER_DEL
) {
872 * most recently deleted ciphersuites get best positions for
873 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
874 * in reverse to maintain the order)
876 ll_append_head(&head
, curr
, &tail
);
879 } else if (rule
== CIPHER_BUMP
) {
881 ll_append_head(&head
, curr
, &tail
);
882 } else if (rule
== CIPHER_KILL
) {
887 curr
->prev
->next
= curr
->next
;
891 if (curr
->next
!= NULL
)
892 curr
->next
->prev
= curr
->prev
;
893 if (curr
->prev
!= NULL
)
894 curr
->prev
->next
= curr
->next
;
903 OSSL_TRACE_END(TLS_CIPHER
);
906 static int ssl_cipher_strength_sort(CIPHER_ORDER
**head_p
,
907 CIPHER_ORDER
**tail_p
)
909 int32_t max_strength_bits
;
914 * This routine sorts the ciphers with descending strength. The sorting
915 * must keep the pre-sorted sequence, so we apply the normal sorting
916 * routine as '+' movement to the end of the list.
918 max_strength_bits
= 0;
920 while (curr
!= NULL
) {
921 if (curr
->active
&& (curr
->cipher
->strength_bits
> max_strength_bits
))
922 max_strength_bits
= curr
->cipher
->strength_bits
;
926 number_uses
= OPENSSL_zalloc(sizeof(int) * (max_strength_bits
+ 1));
927 if (number_uses
== NULL
) {
928 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT
, ERR_R_MALLOC_FAILURE
);
933 * Now find the strength_bits values actually used
936 while (curr
!= NULL
) {
938 number_uses
[curr
->cipher
->strength_bits
]++;
942 * Go through the list of used strength_bits values in descending
945 for (i
= max_strength_bits
; i
>= 0; i
--)
946 if (number_uses
[i
] > 0)
947 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD
, i
, head_p
,
950 OPENSSL_free(number_uses
);
954 static int ssl_cipher_process_rulestr(const char *rule_str
,
955 CIPHER_ORDER
**head_p
,
956 CIPHER_ORDER
**tail_p
,
957 const SSL_CIPHER
**ca_list
, CERT
*c
)
959 uint32_t alg_mkey
, alg_auth
, alg_enc
, alg_mac
, algo_strength
;
962 int j
, multi
, found
, rule
, retval
, ok
, buflen
;
963 uint32_t cipher_id
= 0;
976 } else if (ch
== '+') {
979 } else if (ch
== '!') {
982 } else if (ch
== '@') {
983 rule
= CIPHER_SPECIAL
;
1005 #ifndef CHARSET_EBCDIC
1006 while (((ch
>= 'A') && (ch
<= 'Z')) ||
1007 ((ch
>= '0') && (ch
<= '9')) ||
1008 ((ch
>= 'a') && (ch
<= 'z')) ||
1009 (ch
== '-') || (ch
== '.') || (ch
== '='))
1011 while (isalnum((unsigned char)ch
) || (ch
== '-') || (ch
== '.')
1021 * We hit something we cannot deal with,
1022 * it is no command or separator nor
1023 * alphanumeric, so we call this an error.
1025 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
, SSL_R_INVALID_COMMAND
);
1031 if (rule
== CIPHER_SPECIAL
) {
1032 found
= 0; /* unused -- avoid compiler warning */
1033 break; /* special treatment */
1036 /* check for multi-part specification */
1045 * Now search for the cipher alias in the ca_list. Be careful
1046 * with the strncmp, because the "buflen" limitation
1047 * will make the rule "ADH:SOME" and the cipher
1048 * "ADH-MY-CIPHER" look like a match for buflen=3.
1049 * So additionally check whether the cipher name found
1050 * has the correct length. We can save a strlen() call:
1051 * just checking for the '\0' at the right place is
1052 * sufficient, we have to strncmp() anyway. (We cannot
1053 * use strcmp(), because buf is not '\0' terminated.)
1057 while (ca_list
[j
]) {
1058 if (strncmp(buf
, ca_list
[j
]->name
, buflen
) == 0
1059 && (ca_list
[j
]->name
[buflen
] == '\0')) {
1067 break; /* ignore this entry */
1069 if (ca_list
[j
]->algorithm_mkey
) {
1071 alg_mkey
&= ca_list
[j
]->algorithm_mkey
;
1077 alg_mkey
= ca_list
[j
]->algorithm_mkey
;
1081 if (ca_list
[j
]->algorithm_auth
) {
1083 alg_auth
&= ca_list
[j
]->algorithm_auth
;
1089 alg_auth
= ca_list
[j
]->algorithm_auth
;
1093 if (ca_list
[j
]->algorithm_enc
) {
1095 alg_enc
&= ca_list
[j
]->algorithm_enc
;
1101 alg_enc
= ca_list
[j
]->algorithm_enc
;
1105 if (ca_list
[j
]->algorithm_mac
) {
1107 alg_mac
&= ca_list
[j
]->algorithm_mac
;
1113 alg_mac
= ca_list
[j
]->algorithm_mac
;
1117 if (ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
) {
1118 if (algo_strength
& SSL_STRONG_MASK
) {
1120 (ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
) |
1122 if (!(algo_strength
& SSL_STRONG_MASK
)) {
1127 algo_strength
= ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
;
1131 if (ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
) {
1132 if (algo_strength
& SSL_DEFAULT_MASK
) {
1134 (ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
) |
1136 if (!(algo_strength
& SSL_DEFAULT_MASK
)) {
1142 ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
;
1146 if (ca_list
[j
]->valid
) {
1148 * explicit ciphersuite found; its protocol version does not
1149 * become part of the search pattern!
1152 cipher_id
= ca_list
[j
]->id
;
1155 * not an explicit ciphersuite; only in this case, the
1156 * protocol version is considered part of the search pattern
1159 if (ca_list
[j
]->min_tls
) {
1160 if (min_tls
!= 0 && min_tls
!= ca_list
[j
]->min_tls
) {
1164 min_tls
= ca_list
[j
]->min_tls
;
1174 * Ok, we have the rule, now apply it
1176 if (rule
== CIPHER_SPECIAL
) { /* special command */
1178 if ((buflen
== 8) && strncmp(buf
, "STRENGTH", 8) == 0) {
1179 ok
= ssl_cipher_strength_sort(head_p
, tail_p
);
1180 } else if (buflen
== 10 && strncmp(buf
, "SECLEVEL=", 9) == 0) {
1181 int level
= buf
[9] - '0';
1182 if (level
< 0 || level
> 5) {
1183 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
1184 SSL_R_INVALID_COMMAND
);
1186 c
->sec_level
= level
;
1190 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
, SSL_R_INVALID_COMMAND
);
1195 * We do not support any "multi" options
1196 * together with "@", so throw away the
1197 * rest of the command, if any left, until
1198 * end or ':' is found.
1200 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1203 ssl_cipher_apply_rule(cipher_id
,
1204 alg_mkey
, alg_auth
, alg_enc
, alg_mac
,
1205 min_tls
, algo_strength
, rule
, -1, head_p
,
1208 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1218 #ifndef OPENSSL_NO_EC
1219 static int check_suiteb_cipher_list(const SSL_METHOD
*meth
, CERT
*c
,
1220 const char **prule_str
)
1222 unsigned int suiteb_flags
= 0, suiteb_comb2
= 0;
1223 if (strncmp(*prule_str
, "SUITEB128ONLY", 13) == 0) {
1224 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS_ONLY
;
1225 } else if (strncmp(*prule_str
, "SUITEB128C2", 11) == 0) {
1227 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1228 } else if (strncmp(*prule_str
, "SUITEB128", 9) == 0) {
1229 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1230 } else if (strncmp(*prule_str
, "SUITEB192", 9) == 0) {
1231 suiteb_flags
= SSL_CERT_FLAG_SUITEB_192_LOS
;
1235 c
->cert_flags
&= ~SSL_CERT_FLAG_SUITEB_128_LOS
;
1236 c
->cert_flags
|= suiteb_flags
;
1238 suiteb_flags
= c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
;
1243 /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */
1245 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_TLS1_2_CIPHERS
)) {
1246 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST
,
1247 SSL_R_AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE
);
1250 # ifndef OPENSSL_NO_EC
1251 switch (suiteb_flags
) {
1252 case SSL_CERT_FLAG_SUITEB_128_LOS
:
1254 *prule_str
= "ECDHE-ECDSA-AES256-GCM-SHA384";
1257 "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384";
1259 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY
:
1260 *prule_str
= "ECDHE-ECDSA-AES128-GCM-SHA256";
1262 case SSL_CERT_FLAG_SUITEB_192_LOS
:
1263 *prule_str
= "ECDHE-ECDSA-AES256-GCM-SHA384";
1268 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST
, SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE
);
1274 static int ciphersuite_cb(const char *elem
, int len
, void *arg
)
1276 STACK_OF(SSL_CIPHER
) *ciphersuites
= (STACK_OF(SSL_CIPHER
) *)arg
;
1277 const SSL_CIPHER
*cipher
;
1278 /* Arbitrary sized temp buffer for the cipher name. Should be big enough */
1281 if (len
> (int)(sizeof(name
) - 1)) {
1282 SSLerr(SSL_F_CIPHERSUITE_CB
, SSL_R_NO_CIPHER_MATCH
);
1286 memcpy(name
, elem
, len
);
1289 cipher
= ssl3_get_cipher_by_std_name(name
);
1290 if (cipher
== NULL
) {
1291 SSLerr(SSL_F_CIPHERSUITE_CB
, SSL_R_NO_CIPHER_MATCH
);
1295 if (!sk_SSL_CIPHER_push(ciphersuites
, cipher
)) {
1296 SSLerr(SSL_F_CIPHERSUITE_CB
, ERR_R_INTERNAL_ERROR
);
1303 static __owur
int set_ciphersuites(STACK_OF(SSL_CIPHER
) **currciphers
, const char *str
)
1305 STACK_OF(SSL_CIPHER
) *newciphers
= sk_SSL_CIPHER_new_null();
1307 if (newciphers
== NULL
)
1310 /* Parse the list. We explicitly allow an empty list */
1312 && !CONF_parse_list(str
, ':', 1, ciphersuite_cb
, newciphers
)) {
1313 sk_SSL_CIPHER_free(newciphers
);
1316 sk_SSL_CIPHER_free(*currciphers
);
1317 *currciphers
= newciphers
;
1322 static int update_cipher_list_by_id(STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1323 STACK_OF(SSL_CIPHER
) *cipherstack
)
1325 STACK_OF(SSL_CIPHER
) *tmp_cipher_list
= sk_SSL_CIPHER_dup(cipherstack
);
1327 if (tmp_cipher_list
== NULL
) {
1331 sk_SSL_CIPHER_free(*cipher_list_by_id
);
1332 *cipher_list_by_id
= tmp_cipher_list
;
1334 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id
, ssl_cipher_ptr_id_cmp
);
1335 sk_SSL_CIPHER_sort(*cipher_list_by_id
);
1340 static int update_cipher_list(STACK_OF(SSL_CIPHER
) **cipher_list
,
1341 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1342 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
)
1345 STACK_OF(SSL_CIPHER
) *tmp_cipher_list
= sk_SSL_CIPHER_dup(*cipher_list
);
1347 if (tmp_cipher_list
== NULL
)
1351 * Delete any existing TLSv1.3 ciphersuites. These are always first in the
1354 while (sk_SSL_CIPHER_num(tmp_cipher_list
) > 0
1355 && sk_SSL_CIPHER_value(tmp_cipher_list
, 0)->min_tls
1357 sk_SSL_CIPHER_delete(tmp_cipher_list
, 0);
1359 /* Insert the new TLSv1.3 ciphersuites */
1360 for (i
= 0; i
< sk_SSL_CIPHER_num(tls13_ciphersuites
); i
++)
1361 sk_SSL_CIPHER_insert(tmp_cipher_list
,
1362 sk_SSL_CIPHER_value(tls13_ciphersuites
, i
), i
);
1364 if (!update_cipher_list_by_id(cipher_list_by_id
, tmp_cipher_list
))
1367 sk_SSL_CIPHER_free(*cipher_list
);
1368 *cipher_list
= tmp_cipher_list
;
1373 int SSL_CTX_set_ciphersuites(SSL_CTX
*ctx
, const char *str
)
1375 int ret
= set_ciphersuites(&(ctx
->tls13_ciphersuites
), str
);
1377 if (ret
&& ctx
->cipher_list
!= NULL
)
1378 return update_cipher_list(&ctx
->cipher_list
, &ctx
->cipher_list_by_id
,
1379 ctx
->tls13_ciphersuites
);
1384 int SSL_set_ciphersuites(SSL
*s
, const char *str
)
1386 STACK_OF(SSL_CIPHER
) *cipher_list
;
1387 int ret
= set_ciphersuites(&(s
->tls13_ciphersuites
), str
);
1389 if (s
->cipher_list
== NULL
) {
1390 if ((cipher_list
= SSL_get_ciphers(s
)) != NULL
)
1391 s
->cipher_list
= sk_SSL_CIPHER_dup(cipher_list
);
1393 if (ret
&& s
->cipher_list
!= NULL
)
1394 return update_cipher_list(&s
->cipher_list
, &s
->cipher_list_by_id
,
1395 s
->tls13_ciphersuites
);
1400 STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*ssl_method
,
1401 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
,
1402 STACK_OF(SSL_CIPHER
) **cipher_list
,
1403 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1404 const char *rule_str
,
1407 int ok
, num_of_ciphers
, num_of_alias_max
, num_of_group_aliases
, i
;
1408 uint32_t disabled_mkey
, disabled_auth
, disabled_enc
, disabled_mac
;
1409 STACK_OF(SSL_CIPHER
) *cipherstack
;
1411 CIPHER_ORDER
*co_list
= NULL
, *head
= NULL
, *tail
= NULL
, *curr
;
1412 const SSL_CIPHER
**ca_list
= NULL
;
1415 * Return with error if nothing to do.
1417 if (rule_str
== NULL
|| cipher_list
== NULL
|| cipher_list_by_id
== NULL
)
1419 #ifndef OPENSSL_NO_EC
1420 if (!check_suiteb_cipher_list(ssl_method
, c
, &rule_str
))
1425 * To reduce the work to do we only want to process the compiled
1426 * in algorithms, so we first get the mask of disabled ciphers.
1429 disabled_mkey
= disabled_mkey_mask
;
1430 disabled_auth
= disabled_auth_mask
;
1431 disabled_enc
= disabled_enc_mask
;
1432 disabled_mac
= disabled_mac_mask
;
1435 * Now we have to collect the available ciphers from the compiled
1436 * in ciphers. We cannot get more than the number compiled in, so
1437 * it is used for allocation.
1439 num_of_ciphers
= ssl_method
->num_ciphers();
1441 co_list
= OPENSSL_malloc(sizeof(*co_list
) * num_of_ciphers
);
1442 if (co_list
== NULL
) {
1443 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
1444 return NULL
; /* Failure */
1447 ssl_cipher_collect_ciphers(ssl_method
, num_of_ciphers
,
1448 disabled_mkey
, disabled_auth
, disabled_enc
,
1449 disabled_mac
, co_list
, &head
, &tail
);
1451 /* Now arrange all ciphers by preference. */
1454 * Everything else being equal, prefer ephemeral ECDH over other key
1455 * exchange mechanisms.
1456 * For consistency, prefer ECDSA over RSA (though this only matters if the
1457 * server has both certificates, and is using the DEFAULT, or a client
1460 ssl_cipher_apply_rule(0, SSL_kECDHE
, SSL_aECDSA
, 0, 0, 0, 0, CIPHER_ADD
,
1462 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
,
1464 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
,
1467 /* Within each strength group, we prefer GCM over CHACHA... */
1468 ssl_cipher_apply_rule(0, 0, 0, SSL_AESGCM
, 0, 0, 0, CIPHER_ADD
, -1,
1470 ssl_cipher_apply_rule(0, 0, 0, SSL_CHACHA20
, 0, 0, 0, CIPHER_ADD
, -1,
1474 * ...and generally, our preferred cipher is AES.
1475 * Note that AEADs will be bumped to take preference after sorting by
1478 ssl_cipher_apply_rule(0, 0, 0, SSL_AES
^ SSL_AESGCM
, 0, 0, 0, CIPHER_ADD
,
1481 /* Temporarily enable everything else for sorting */
1482 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
, &tail
);
1484 /* Low priority for MD5 */
1485 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5
, 0, 0, CIPHER_ORD
, -1, &head
,
1489 * Move anonymous ciphers to the end. Usually, these will remain
1490 * disabled. (For applications that allow them, they aren't too bad, but
1491 * we prefer authenticated ciphers.)
1493 ssl_cipher_apply_rule(0, 0, SSL_aNULL
, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1496 ssl_cipher_apply_rule(0, SSL_kRSA
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1498 ssl_cipher_apply_rule(0, SSL_kPSK
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1501 /* RC4 is sort-of broken -- move to the end */
1502 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4
, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1506 * Now sort by symmetric encryption strength. The above ordering remains
1507 * in force within each class
1509 if (!ssl_cipher_strength_sort(&head
, &tail
)) {
1510 OPENSSL_free(co_list
);
1515 * Partially overrule strength sort to prefer TLS 1.2 ciphers/PRFs.
1516 * TODO(openssl-team): is there an easier way to accomplish all this?
1518 ssl_cipher_apply_rule(0, 0, 0, 0, 0, TLS1_2_VERSION
, 0, CIPHER_BUMP
, -1,
1522 * Irrespective of strength, enforce the following order:
1523 * (EC)DHE + AEAD > (EC)DHE > rest of AEAD > rest.
1524 * Within each group, ciphers remain sorted by strength and previous
1529 * 4) TLS 1.2 > legacy
1531 * Because we now bump ciphers to the top of the list, we proceed in
1532 * reverse order of preference.
1534 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_AEAD
, 0, 0, CIPHER_BUMP
, -1,
1536 ssl_cipher_apply_rule(0, SSL_kDHE
| SSL_kECDHE
, 0, 0, 0, 0, 0,
1537 CIPHER_BUMP
, -1, &head
, &tail
);
1538 ssl_cipher_apply_rule(0, SSL_kDHE
| SSL_kECDHE
, 0, 0, SSL_AEAD
, 0, 0,
1539 CIPHER_BUMP
, -1, &head
, &tail
);
1541 /* Now disable everything (maintaining the ordering!) */
1542 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
, &tail
);
1545 * We also need cipher aliases for selecting based on the rule_str.
1546 * There might be two types of entries in the rule_str: 1) names
1547 * of ciphers themselves 2) aliases for groups of ciphers.
1548 * For 1) we need the available ciphers and for 2) the cipher
1549 * groups of cipher_aliases added together in one list (otherwise
1550 * we would be happy with just the cipher_aliases table).
1552 num_of_group_aliases
= OSSL_NELEM(cipher_aliases
);
1553 num_of_alias_max
= num_of_ciphers
+ num_of_group_aliases
+ 1;
1554 ca_list
= OPENSSL_malloc(sizeof(*ca_list
) * num_of_alias_max
);
1555 if (ca_list
== NULL
) {
1556 OPENSSL_free(co_list
);
1557 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
1558 return NULL
; /* Failure */
1560 ssl_cipher_collect_aliases(ca_list
, num_of_group_aliases
,
1561 disabled_mkey
, disabled_auth
, disabled_enc
,
1562 disabled_mac
, head
);
1565 * If the rule_string begins with DEFAULT, apply the default rule
1566 * before using the (possibly available) additional rules.
1570 if (strncmp(rule_str
, "DEFAULT", 7) == 0) {
1571 ok
= ssl_cipher_process_rulestr(OSSL_default_cipher_list(),
1572 &head
, &tail
, ca_list
, c
);
1578 if (ok
&& (rule_p
[0] != '\0'))
1579 ok
= ssl_cipher_process_rulestr(rule_p
, &head
, &tail
, ca_list
, c
);
1581 OPENSSL_free(ca_list
); /* Not needed anymore */
1583 if (!ok
) { /* Rule processing failure */
1584 OPENSSL_free(co_list
);
1589 * Allocate new "cipherstack" for the result, return with error
1590 * if we cannot get one.
1592 if ((cipherstack
= sk_SSL_CIPHER_new_null()) == NULL
) {
1593 OPENSSL_free(co_list
);
1597 /* Add TLSv1.3 ciphers first - we always prefer those if possible */
1598 for (i
= 0; i
< sk_SSL_CIPHER_num(tls13_ciphersuites
); i
++) {
1599 if (!sk_SSL_CIPHER_push(cipherstack
,
1600 sk_SSL_CIPHER_value(tls13_ciphersuites
, i
))) {
1601 sk_SSL_CIPHER_free(cipherstack
);
1606 OSSL_TRACE_BEGIN(TLS_CIPHER
) {
1607 BIO_printf(trc_out
, "cipher selection:\n");
1610 * The cipher selection for the list is done. The ciphers are added
1611 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1613 for (curr
= head
; curr
!= NULL
; curr
= curr
->next
) {
1615 if (!sk_SSL_CIPHER_push(cipherstack
, curr
->cipher
)) {
1616 OPENSSL_free(co_list
);
1617 sk_SSL_CIPHER_free(cipherstack
);
1618 OSSL_TRACE_CANCEL(TLS_CIPHER
);
1621 if (trc_out
!= NULL
)
1622 BIO_printf(trc_out
, "<%s>\n", curr
->cipher
->name
);
1625 OPENSSL_free(co_list
); /* Not needed any longer */
1626 OSSL_TRACE_END(TLS_CIPHER
);
1628 if (!update_cipher_list_by_id(cipher_list_by_id
, cipherstack
)) {
1629 sk_SSL_CIPHER_free(cipherstack
);
1632 sk_SSL_CIPHER_free(*cipher_list
);
1633 *cipher_list
= cipherstack
;
1638 char *SSL_CIPHER_description(const SSL_CIPHER
*cipher
, char *buf
, int len
)
1641 const char *kx
, *au
, *enc
, *mac
;
1642 uint32_t alg_mkey
, alg_auth
, alg_enc
, alg_mac
;
1643 static const char *format
= "%-30s %-7s Kx=%-8s Au=%-5s Enc=%-9s Mac=%-4s\n";
1647 if ((buf
= OPENSSL_malloc(len
)) == NULL
) {
1648 SSLerr(SSL_F_SSL_CIPHER_DESCRIPTION
, ERR_R_MALLOC_FAILURE
);
1651 } else if (len
< 128) {
1655 alg_mkey
= cipher
->algorithm_mkey
;
1656 alg_auth
= cipher
->algorithm_auth
;
1657 alg_enc
= cipher
->algorithm_enc
;
1658 alg_mac
= cipher
->algorithm_mac
;
1660 ver
= ssl_protocol_to_string(cipher
->min_tls
);
1719 /* New GOST ciphersuites have both SSL_aGOST12 and SSL_aGOST01 bits */
1720 case (SSL_aGOST12
| SSL_aGOST01
):
1757 enc
= "AESGCM(128)";
1760 enc
= "AESGCM(256)";
1763 enc
= "AESCCM(128)";
1766 enc
= "AESCCM(256)";
1768 case SSL_AES128CCM8
:
1769 enc
= "AESCCM8(128)";
1771 case SSL_AES256CCM8
:
1772 enc
= "AESCCM8(256)";
1774 case SSL_CAMELLIA128
:
1775 enc
= "Camellia(128)";
1777 case SSL_CAMELLIA256
:
1778 enc
= "Camellia(256)";
1780 case SSL_ARIA128GCM
:
1781 enc
= "ARIAGCM(128)";
1783 case SSL_ARIA256GCM
:
1784 enc
= "ARIAGCM(256)";
1789 case SSL_eGOST2814789CNT
:
1790 case SSL_eGOST2814789CNT12
:
1791 enc
= "GOST89(256)";
1793 case SSL_CHACHA20POLY1305
:
1794 enc
= "CHACHA20/POLY1305(256)";
1818 case SSL_GOST89MAC12
:
1824 case SSL_GOST12_256
:
1825 case SSL_GOST12_512
:
1833 BIO_snprintf(buf
, len
, format
, cipher
->name
, ver
, kx
, au
, enc
, mac
);
1838 const char *SSL_CIPHER_get_version(const SSL_CIPHER
*c
)
1844 * Backwards-compatibility crutch. In almost all contexts we report TLS
1845 * 1.0 as "TLSv1", but for ciphers we report "TLSv1.0".
1847 if (c
->min_tls
== TLS1_VERSION
)
1849 return ssl_protocol_to_string(c
->min_tls
);
1852 /* return the actual cipher being used */
1853 const char *SSL_CIPHER_get_name(const SSL_CIPHER
*c
)
1860 /* return the actual cipher being used in RFC standard name */
1861 const char *SSL_CIPHER_standard_name(const SSL_CIPHER
*c
)
1868 /* return the OpenSSL name based on given RFC standard name */
1869 const char *OPENSSL_cipher_name(const char *stdname
)
1871 const SSL_CIPHER
*c
;
1873 if (stdname
== NULL
)
1875 c
= ssl3_get_cipher_by_std_name(stdname
);
1876 return SSL_CIPHER_get_name(c
);
1879 /* number of bits for symmetric cipher */
1880 int SSL_CIPHER_get_bits(const SSL_CIPHER
*c
, int *alg_bits
)
1885 if (alg_bits
!= NULL
)
1886 *alg_bits
= (int)c
->alg_bits
;
1887 ret
= (int)c
->strength_bits
;
1892 uint32_t SSL_CIPHER_get_id(const SSL_CIPHER
*c
)
1897 uint16_t SSL_CIPHER_get_protocol_id(const SSL_CIPHER
*c
)
1899 return c
->id
& 0xFFFF;
1902 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
)
1907 if ((n
== 0) || (sk
== NULL
))
1909 nn
= sk_SSL_COMP_num(sk
);
1910 for (i
= 0; i
< nn
; i
++) {
1911 ctmp
= sk_SSL_COMP_value(sk
, i
);
1918 #ifdef OPENSSL_NO_COMP
1919 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1924 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1930 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1936 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1938 load_builtin_compressions();
1939 return ssl_comp_methods
;
1942 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1945 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1946 ssl_comp_methods
= meths
;
1950 static void cmeth_free(SSL_COMP
*cm
)
1955 void ssl_comp_free_compression_methods_int(void)
1957 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1958 ssl_comp_methods
= NULL
;
1959 sk_SSL_COMP_pop_free(old_meths
, cmeth_free
);
1962 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1966 if (cm
== NULL
|| COMP_get_type(cm
) == NID_undef
)
1970 * According to draft-ietf-tls-compression-04.txt, the
1971 * compression number ranges should be the following:
1973 * 0 to 63: methods defined by the IETF
1974 * 64 to 192: external party methods assigned by IANA
1975 * 193 to 255: reserved for private use
1977 if (id
< 193 || id
> 255) {
1978 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,
1979 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE
);
1983 comp
= OPENSSL_malloc(sizeof(*comp
));
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 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,
1995 SSL_R_DUPLICATE_COMPRESSION_ID
);
1998 if (ssl_comp_methods
== NULL
|| !sk_SSL_COMP_push(ssl_comp_methods
, comp
)) {
2000 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
, ERR_R_MALLOC_FAILURE
);
2007 const char *SSL_COMP_get_name(const COMP_METHOD
*comp
)
2009 #ifndef OPENSSL_NO_COMP
2010 return comp
? COMP_get_name(comp
) : NULL
;
2016 const char *SSL_COMP_get0_name(const SSL_COMP
*comp
)
2018 #ifndef OPENSSL_NO_COMP
2025 int SSL_COMP_get_id(const SSL_COMP
*comp
)
2027 #ifndef OPENSSL_NO_COMP
2034 const SSL_CIPHER
*ssl_get_cipher_by_char(SSL
*ssl
, const unsigned char *ptr
,
2037 const SSL_CIPHER
*c
= ssl
->method
->get_cipher_by_char(ptr
);
2039 if (c
== NULL
|| (!all
&& c
->valid
== 0))
2044 const SSL_CIPHER
*SSL_CIPHER_find(SSL
*ssl
, const unsigned char *ptr
)
2046 return ssl
->method
->get_cipher_by_char(ptr
);
2049 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER
*c
)
2054 i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, c
->algorithm_enc
);
2057 return ssl_cipher_table_cipher
[i
].nid
;
2060 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER
*c
)
2062 int i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
2066 return ssl_cipher_table_mac
[i
].nid
;
2069 int SSL_CIPHER_get_kx_nid(const SSL_CIPHER
*c
)
2071 int i
= ssl_cipher_info_lookup(ssl_cipher_table_kx
, c
->algorithm_mkey
);
2075 return ssl_cipher_table_kx
[i
].nid
;
2078 int SSL_CIPHER_get_auth_nid(const SSL_CIPHER
*c
)
2080 int i
= ssl_cipher_info_lookup(ssl_cipher_table_auth
, c
->algorithm_auth
);
2084 return ssl_cipher_table_auth
[i
].nid
;
2087 const EVP_MD
*SSL_CIPHER_get_handshake_digest(const SSL_CIPHER
*c
)
2089 int idx
= c
->algorithm2
& SSL_HANDSHAKE_MAC_MASK
;
2091 if (idx
< 0 || idx
>= SSL_MD_NUM_IDX
)
2093 return EVP_get_digestbynid(ssl_cipher_table_mac
[idx
].nid
);
2096 int SSL_CIPHER_is_aead(const SSL_CIPHER
*c
)
2098 return (c
->algorithm_mac
& SSL_AEAD
) ? 1 : 0;
2101 int ssl_cipher_get_overhead(const SSL_CIPHER
*c
, size_t *mac_overhead
,
2102 size_t *int_overhead
, size_t *blocksize
,
2103 size_t *ext_overhead
)
2105 size_t mac
= 0, in
= 0, blk
= 0, out
= 0;
2107 /* Some hard-coded numbers for the CCM/Poly1305 MAC overhead
2108 * because there are no handy #defines for those. */
2109 if (c
->algorithm_enc
& (SSL_AESGCM
| SSL_ARIAGCM
)) {
2110 out
= EVP_GCM_TLS_EXPLICIT_IV_LEN
+ EVP_GCM_TLS_TAG_LEN
;
2111 } else if (c
->algorithm_enc
& (SSL_AES128CCM
| SSL_AES256CCM
)) {
2112 out
= EVP_CCM_TLS_EXPLICIT_IV_LEN
+ 16;
2113 } else if (c
->algorithm_enc
& (SSL_AES128CCM8
| SSL_AES256CCM8
)) {
2114 out
= EVP_CCM_TLS_EXPLICIT_IV_LEN
+ 8;
2115 } else if (c
->algorithm_enc
& SSL_CHACHA20POLY1305
) {
2117 } else if (c
->algorithm_mac
& SSL_AEAD
) {
2118 /* We're supposed to have handled all the AEAD modes above */
2121 /* Non-AEAD modes. Calculate MAC/cipher overhead separately */
2122 int digest_nid
= SSL_CIPHER_get_digest_nid(c
);
2123 const EVP_MD
*e_md
= EVP_get_digestbynid(digest_nid
);
2128 mac
= EVP_MD_size(e_md
);
2129 if (c
->algorithm_enc
!= SSL_eNULL
) {
2130 int cipher_nid
= SSL_CIPHER_get_cipher_nid(c
);
2131 const EVP_CIPHER
*e_ciph
= EVP_get_cipherbynid(cipher_nid
);
2133 /* If it wasn't AEAD or SSL_eNULL, we expect it to be a
2134 known CBC cipher. */
2135 if (e_ciph
== NULL
||
2136 EVP_CIPHER_mode(e_ciph
) != EVP_CIPH_CBC_MODE
)
2139 in
= 1; /* padding length byte */
2140 out
= EVP_CIPHER_iv_length(e_ciph
);
2141 blk
= EVP_CIPHER_block_size(e_ciph
);
2145 *mac_overhead
= mac
;
2148 *ext_overhead
= out
;
2153 int ssl_cert_is_disabled(size_t idx
)
2155 const SSL_CERT_LOOKUP
*cl
= ssl_cert_lookup_by_idx(idx
);
2157 if (cl
== NULL
|| (cl
->amask
& disabled_auth_mask
) != 0)
2163 * Default list of TLSv1.2 (and earlier) ciphers
2164 * SSL_DEFAULT_CIPHER_LIST deprecated in 3.0.0
2165 * Update both macro and function simultaneously
2167 const char *OSSL_default_cipher_list(void)
2169 return "ALL:!COMPLEMENTOFDEFAULT:!eNULL";
2173 * Default list of TLSv1.3 (and later) ciphers
2174 * TLS_DEFAULT_CIPHERSUITES deprecated in 3.0.0
2175 * Update both macro and function simultaneously
2177 const char *OSSL_default_ciphersuites(void)
2179 return "TLS_AES_256_GCM_SHA384:"
2180 #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
2181 "TLS_CHACHA20_POLY1305_SHA256:"
2183 "TLS_AES_128_GCM_SHA256";