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 */
59 {SSL_MAGMA
, NID_magma_ctr_acpkm
}, /* SSL_ENC_MAGMA_IDX */
60 {SSL_KUZNYECHIK
, NID_kuznyechik_ctr_acpkm
}, /* SSL_ENC_KUZNYECHIK_IDX */
63 #define SSL_COMP_NULL_IDX 0
64 #define SSL_COMP_ZLIB_IDX 1
65 #define SSL_COMP_NUM_IDX 2
67 static STACK_OF(SSL_COMP
) *ssl_comp_methods
= NULL
;
69 #ifndef OPENSSL_NO_COMP
70 static CRYPTO_ONCE ssl_load_builtin_comp_once
= CRYPTO_ONCE_STATIC_INIT
;
73 /* NB: make sure indices in this table matches values above */
74 static const ssl_cipher_table ssl_cipher_table_mac
[SSL_MD_NUM_IDX
] = {
75 {SSL_MD5
, NID_md5
}, /* SSL_MD_MD5_IDX 0 */
76 {SSL_SHA1
, NID_sha1
}, /* SSL_MD_SHA1_IDX 1 */
77 {SSL_GOST94
, NID_id_GostR3411_94
}, /* SSL_MD_GOST94_IDX 2 */
78 {SSL_GOST89MAC
, NID_id_Gost28147_89_MAC
}, /* SSL_MD_GOST89MAC_IDX 3 */
79 {SSL_SHA256
, NID_sha256
}, /* SSL_MD_SHA256_IDX 4 */
80 {SSL_SHA384
, NID_sha384
}, /* SSL_MD_SHA384_IDX 5 */
81 {SSL_GOST12_256
, NID_id_GostR3411_2012_256
}, /* SSL_MD_GOST12_256_IDX 6 */
82 {SSL_GOST89MAC12
, NID_gost_mac_12
}, /* SSL_MD_GOST89MAC12_IDX 7 */
83 {SSL_GOST12_512
, NID_id_GostR3411_2012_512
}, /* SSL_MD_GOST12_512_IDX 8 */
84 {0, NID_md5_sha1
}, /* SSL_MD_MD5_SHA1_IDX 9 */
85 {0, NID_sha224
}, /* SSL_MD_SHA224_IDX 10 */
86 {0, NID_sha512
}, /* SSL_MD_SHA512_IDX 11 */
87 {SSL_MAGMAOMAC
, NID_magma_mac
}, /* sSL_MD_MAGMAOMAC_IDX */
88 {SSL_KUZNYECHIKOMAC
, NID_kuznyechik_mac
} /* SSL_MD_KUZNYECHIKOMAC_IDX */
92 static const ssl_cipher_table ssl_cipher_table_kx
[] = {
93 {SSL_kRSA
, NID_kx_rsa
},
94 {SSL_kECDHE
, NID_kx_ecdhe
},
95 {SSL_kDHE
, NID_kx_dhe
},
96 {SSL_kECDHEPSK
, NID_kx_ecdhe_psk
},
97 {SSL_kDHEPSK
, NID_kx_dhe_psk
},
98 {SSL_kRSAPSK
, NID_kx_rsa_psk
},
99 {SSL_kPSK
, NID_kx_psk
},
100 {SSL_kSRP
, NID_kx_srp
},
101 {SSL_kGOST
, NID_kx_gost
},
102 {SSL_kGOST18
, NID_kx_gost18
},
103 {SSL_kANY
, NID_kx_any
}
106 static const ssl_cipher_table ssl_cipher_table_auth
[] = {
107 {SSL_aRSA
, NID_auth_rsa
},
108 {SSL_aECDSA
, NID_auth_ecdsa
},
109 {SSL_aPSK
, NID_auth_psk
},
110 {SSL_aDSS
, NID_auth_dss
},
111 {SSL_aGOST01
, NID_auth_gost01
},
112 {SSL_aGOST12
, NID_auth_gost12
},
113 {SSL_aSRP
, NID_auth_srp
},
114 {SSL_aNULL
, NID_auth_null
},
115 {SSL_aANY
, NID_auth_any
}
119 /* Utility function for table lookup */
120 static int ssl_cipher_info_find(const ssl_cipher_table
* table
,
121 size_t table_cnt
, uint32_t mask
)
124 for (i
= 0; i
< table_cnt
; i
++, table
++) {
125 if (table
->mask
== mask
)
131 #define ssl_cipher_info_lookup(table, x) \
132 ssl_cipher_info_find(table, OSSL_NELEM(table), x)
135 * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation
136 * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is
139 static int ssl_mac_pkey_id
[SSL_MD_NUM_IDX
] = {
140 /* MD5, SHA, GOST94, MAC89 */
141 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, NID_undef
,
142 /* SHA256, SHA384, GOST2012_256, MAC89-12 */
143 EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, EVP_PKEY_HMAC
, NID_undef
,
146 /* MD5/SHA1, SHA224, SHA512, MAGMAOMAC, KUZNYECHIKOMAC */
147 NID_undef
, NID_undef
, NID_undef
, NID_undef
, NID_undef
151 #define CIPHER_KILL 2
154 #define CIPHER_SPECIAL 5
156 * Bump the ciphers to the top of the list.
157 * This rule isn't currently supported by the public cipherstring API.
159 #define CIPHER_BUMP 6
161 typedef struct cipher_order_st
{
162 const SSL_CIPHER
*cipher
;
165 struct cipher_order_st
*next
, *prev
;
168 static const SSL_CIPHER cipher_aliases
[] = {
169 /* "ALL" doesn't include eNULL (must be specifically enabled) */
170 {0, SSL_TXT_ALL
, NULL
, 0, 0, 0, ~SSL_eNULL
},
171 /* "COMPLEMENTOFALL" */
172 {0, SSL_TXT_CMPALL
, NULL
, 0, 0, 0, SSL_eNULL
},
175 * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in
178 {0, SSL_TXT_CMPDEF
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_NOT_DEFAULT
},
181 * key exchange aliases (some of those using only a single bit here
182 * combine multiple key exchange algs according to the RFCs, e.g. kDHE
183 * combines DHE_DSS and DHE_RSA)
185 {0, SSL_TXT_kRSA
, NULL
, 0, SSL_kRSA
},
187 {0, SSL_TXT_kEDH
, NULL
, 0, SSL_kDHE
},
188 {0, SSL_TXT_kDHE
, NULL
, 0, SSL_kDHE
},
189 {0, SSL_TXT_DH
, NULL
, 0, SSL_kDHE
},
191 {0, SSL_TXT_kEECDH
, NULL
, 0, SSL_kECDHE
},
192 {0, SSL_TXT_kECDHE
, NULL
, 0, SSL_kECDHE
},
193 {0, SSL_TXT_ECDH
, NULL
, 0, SSL_kECDHE
},
195 {0, SSL_TXT_kPSK
, NULL
, 0, SSL_kPSK
},
196 {0, SSL_TXT_kRSAPSK
, NULL
, 0, SSL_kRSAPSK
},
197 {0, SSL_TXT_kECDHEPSK
, NULL
, 0, SSL_kECDHEPSK
},
198 {0, SSL_TXT_kDHEPSK
, NULL
, 0, SSL_kDHEPSK
},
199 {0, SSL_TXT_kSRP
, NULL
, 0, SSL_kSRP
},
200 {0, SSL_TXT_kGOST
, NULL
, 0, SSL_kGOST
},
201 {0, SSL_TXT_kGOST18
, NULL
, 0, SSL_kGOST18
},
203 /* server authentication aliases */
204 {0, SSL_TXT_aRSA
, NULL
, 0, 0, SSL_aRSA
},
205 {0, SSL_TXT_aDSS
, NULL
, 0, 0, SSL_aDSS
},
206 {0, SSL_TXT_DSS
, NULL
, 0, 0, SSL_aDSS
},
207 {0, SSL_TXT_aNULL
, NULL
, 0, 0, SSL_aNULL
},
208 {0, SSL_TXT_aECDSA
, NULL
, 0, 0, SSL_aECDSA
},
209 {0, SSL_TXT_ECDSA
, NULL
, 0, 0, SSL_aECDSA
},
210 {0, SSL_TXT_aPSK
, NULL
, 0, 0, SSL_aPSK
},
211 {0, SSL_TXT_aGOST01
, NULL
, 0, 0, SSL_aGOST01
},
212 {0, SSL_TXT_aGOST12
, NULL
, 0, 0, SSL_aGOST12
},
213 {0, SSL_TXT_aGOST
, NULL
, 0, 0, SSL_aGOST01
| SSL_aGOST12
},
214 {0, SSL_TXT_aSRP
, NULL
, 0, 0, SSL_aSRP
},
216 /* aliases combining key exchange and server authentication */
217 {0, SSL_TXT_EDH
, NULL
, 0, SSL_kDHE
, ~SSL_aNULL
},
218 {0, SSL_TXT_DHE
, NULL
, 0, SSL_kDHE
, ~SSL_aNULL
},
219 {0, SSL_TXT_EECDH
, NULL
, 0, SSL_kECDHE
, ~SSL_aNULL
},
220 {0, SSL_TXT_ECDHE
, NULL
, 0, SSL_kECDHE
, ~SSL_aNULL
},
221 {0, SSL_TXT_NULL
, NULL
, 0, 0, 0, SSL_eNULL
},
222 {0, SSL_TXT_RSA
, NULL
, 0, SSL_kRSA
, SSL_aRSA
},
223 {0, SSL_TXT_ADH
, NULL
, 0, SSL_kDHE
, SSL_aNULL
},
224 {0, SSL_TXT_AECDH
, NULL
, 0, SSL_kECDHE
, SSL_aNULL
},
225 {0, SSL_TXT_PSK
, NULL
, 0, SSL_PSK
},
226 {0, SSL_TXT_SRP
, NULL
, 0, SSL_kSRP
},
228 /* symmetric encryption aliases */
229 {0, SSL_TXT_3DES
, NULL
, 0, 0, 0, SSL_3DES
},
230 {0, SSL_TXT_RC4
, NULL
, 0, 0, 0, SSL_RC4
},
231 {0, SSL_TXT_RC2
, NULL
, 0, 0, 0, SSL_RC2
},
232 {0, SSL_TXT_IDEA
, NULL
, 0, 0, 0, SSL_IDEA
},
233 {0, SSL_TXT_SEED
, NULL
, 0, 0, 0, SSL_SEED
},
234 {0, SSL_TXT_eNULL
, NULL
, 0, 0, 0, SSL_eNULL
},
235 {0, SSL_TXT_GOST
, NULL
, 0, 0, 0,
236 SSL_eGOST2814789CNT
| SSL_eGOST2814789CNT12
| SSL_MAGMA
| SSL_KUZNYECHIK
},
237 {0, SSL_TXT_AES128
, NULL
, 0, 0, 0,
238 SSL_AES128
| SSL_AES128GCM
| SSL_AES128CCM
| SSL_AES128CCM8
},
239 {0, SSL_TXT_AES256
, NULL
, 0, 0, 0,
240 SSL_AES256
| SSL_AES256GCM
| SSL_AES256CCM
| SSL_AES256CCM8
},
241 {0, SSL_TXT_AES
, NULL
, 0, 0, 0, SSL_AES
},
242 {0, SSL_TXT_AES_GCM
, NULL
, 0, 0, 0, SSL_AES128GCM
| SSL_AES256GCM
},
243 {0, SSL_TXT_AES_CCM
, NULL
, 0, 0, 0,
244 SSL_AES128CCM
| SSL_AES256CCM
| SSL_AES128CCM8
| SSL_AES256CCM8
},
245 {0, SSL_TXT_AES_CCM_8
, NULL
, 0, 0, 0, SSL_AES128CCM8
| SSL_AES256CCM8
},
246 {0, SSL_TXT_CAMELLIA128
, NULL
, 0, 0, 0, SSL_CAMELLIA128
},
247 {0, SSL_TXT_CAMELLIA256
, NULL
, 0, 0, 0, SSL_CAMELLIA256
},
248 {0, SSL_TXT_CAMELLIA
, NULL
, 0, 0, 0, SSL_CAMELLIA
},
249 {0, SSL_TXT_CHACHA20
, NULL
, 0, 0, 0, SSL_CHACHA20
},
250 {0, SSL_TXT_GOST2012_GOST8912_GOST8912
, NULL
, 0, 0, 0, SSL_eGOST2814789CNT12
},
252 {0, SSL_TXT_ARIA
, NULL
, 0, 0, 0, SSL_ARIA
},
253 {0, SSL_TXT_ARIA_GCM
, NULL
, 0, 0, 0, SSL_ARIA128GCM
| SSL_ARIA256GCM
},
254 {0, SSL_TXT_ARIA128
, NULL
, 0, 0, 0, SSL_ARIA128GCM
},
255 {0, SSL_TXT_ARIA256
, NULL
, 0, 0, 0, SSL_ARIA256GCM
},
258 {0, SSL_TXT_MD5
, NULL
, 0, 0, 0, 0, SSL_MD5
},
259 {0, SSL_TXT_SHA1
, NULL
, 0, 0, 0, 0, SSL_SHA1
},
260 {0, SSL_TXT_SHA
, NULL
, 0, 0, 0, 0, SSL_SHA1
},
261 {0, SSL_TXT_GOST94
, NULL
, 0, 0, 0, 0, SSL_GOST94
},
262 {0, SSL_TXT_GOST89MAC
, NULL
, 0, 0, 0, 0, SSL_GOST89MAC
| SSL_GOST89MAC12
},
263 {0, SSL_TXT_SHA256
, NULL
, 0, 0, 0, 0, SSL_SHA256
},
264 {0, SSL_TXT_SHA384
, NULL
, 0, 0, 0, 0, SSL_SHA384
},
265 {0, SSL_TXT_GOST12
, NULL
, 0, 0, 0, 0, SSL_GOST12_256
},
267 /* protocol version aliases */
268 {0, SSL_TXT_SSLV3
, NULL
, 0, 0, 0, 0, 0, SSL3_VERSION
},
269 {0, SSL_TXT_TLSV1
, NULL
, 0, 0, 0, 0, 0, TLS1_VERSION
},
270 {0, "TLSv1.0", NULL
, 0, 0, 0, 0, 0, TLS1_VERSION
},
271 {0, SSL_TXT_TLSV1_2
, NULL
, 0, 0, 0, 0, 0, TLS1_2_VERSION
},
273 /* strength classes */
274 {0, SSL_TXT_LOW
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_LOW
},
275 {0, SSL_TXT_MEDIUM
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_MEDIUM
},
276 {0, SSL_TXT_HIGH
, NULL
, 0, 0, 0, 0, 0, 0, 0, 0, 0, SSL_HIGH
},
277 /* FIPS 140-2 approved ciphersuite */
278 {0, SSL_TXT_FIPS
, NULL
, 0, 0, 0, ~SSL_eNULL
, 0, 0, 0, 0, 0, SSL_FIPS
},
280 /* "EDH-" aliases to "DHE-" labels (for backward compatibility) */
281 {0, SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA
, NULL
, 0,
282 SSL_kDHE
, SSL_aDSS
, SSL_3DES
, SSL_SHA1
, 0, 0, 0, 0, SSL_HIGH
| SSL_FIPS
},
283 {0, SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA
, NULL
, 0,
284 SSL_kDHE
, SSL_aRSA
, SSL_3DES
, SSL_SHA1
, 0, 0, 0, 0, SSL_HIGH
| SSL_FIPS
},
289 * Search for public key algorithm with given name and return its pkey_id if
290 * it is available. Otherwise return 0
292 #ifdef OPENSSL_NO_ENGINE
294 static int get_optional_pkey_id(const char *pkey_name
)
296 const EVP_PKEY_ASN1_METHOD
*ameth
;
298 ameth
= EVP_PKEY_asn1_find_str(NULL
, pkey_name
, -1);
299 if (ameth
&& EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
,
307 static int get_optional_pkey_id(const char *pkey_name
)
309 const EVP_PKEY_ASN1_METHOD
*ameth
;
310 ENGINE
*tmpeng
= NULL
;
312 ameth
= EVP_PKEY_asn1_find_str(&tmpeng
, pkey_name
, -1);
314 if (EVP_PKEY_asn1_get0_info(&pkey_id
, NULL
, NULL
, NULL
, NULL
,
318 ENGINE_finish(tmpeng
);
324 /* masks of disabled algorithms */
325 static uint32_t disabled_enc_mask
;
326 static uint32_t disabled_mac_mask
;
327 static uint32_t disabled_mkey_mask
;
328 static uint32_t disabled_auth_mask
;
330 int ssl_load_ciphers(SSL_CTX
*ctx
)
333 const ssl_cipher_table
*t
;
335 disabled_enc_mask
= 0;
336 for (i
= 0, t
= ssl_cipher_table_cipher
; i
< SSL_ENC_NUM_IDX
; i
++, t
++) {
337 if (t
->nid
!= NID_undef
) {
338 const EVP_CIPHER
*cipher
339 = ssl_evp_cipher_fetch(ctx
->libctx
, t
->nid
, ctx
->propq
);
341 ctx
->ssl_cipher_methods
[i
] = cipher
;
343 disabled_enc_mask
|= t
->mask
;
346 disabled_mac_mask
= 0;
347 for (i
= 0, t
= ssl_cipher_table_mac
; i
< SSL_MD_NUM_IDX
; i
++, t
++) {
349 = ssl_evp_md_fetch(ctx
->libctx
, t
->nid
, ctx
->propq
);
351 ctx
->ssl_digest_methods
[i
] = md
;
353 disabled_mac_mask
|= t
->mask
;
355 int tmpsize
= EVP_MD_size(md
);
356 if (!ossl_assert(tmpsize
>= 0))
358 ctx
->ssl_mac_secret_size
[i
] = tmpsize
;
362 disabled_mkey_mask
= 0;
363 disabled_auth_mask
= 0;
365 #ifdef OPENSSL_NO_RSA
366 disabled_mkey_mask
|= SSL_kRSA
| SSL_kRSAPSK
;
367 disabled_auth_mask
|= SSL_aRSA
;
369 #ifdef OPENSSL_NO_DSA
370 disabled_auth_mask
|= SSL_aDSS
;
373 disabled_mkey_mask
|= SSL_kDHE
| SSL_kDHEPSK
;
376 disabled_mkey_mask
|= SSL_kECDHE
| SSL_kECDHEPSK
;
377 disabled_auth_mask
|= SSL_aECDSA
;
379 #ifdef OPENSSL_NO_PSK
380 disabled_mkey_mask
|= SSL_PSK
;
381 disabled_auth_mask
|= SSL_aPSK
;
383 #ifdef OPENSSL_NO_SRP
384 disabled_mkey_mask
|= SSL_kSRP
;
388 * Check for presence of GOST 34.10 algorithms, and if they are not
389 * present, disable appropriate auth and key exchange
391 ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
] = get_optional_pkey_id(SN_id_Gost28147_89_MAC
);
392 if (ssl_mac_pkey_id
[SSL_MD_GOST89MAC_IDX
])
393 ctx
->ssl_mac_secret_size
[SSL_MD_GOST89MAC_IDX
] = 32;
395 disabled_mac_mask
|= SSL_GOST89MAC
;
397 ssl_mac_pkey_id
[SSL_MD_GOST89MAC12_IDX
] =
398 get_optional_pkey_id(SN_gost_mac_12
);
399 if (ssl_mac_pkey_id
[SSL_MD_GOST89MAC12_IDX
])
400 ctx
->ssl_mac_secret_size
[SSL_MD_GOST89MAC12_IDX
] = 32;
402 disabled_mac_mask
|= SSL_GOST89MAC12
;
404 ssl_mac_pkey_id
[SSL_MD_MAGMAOMAC_IDX
] =
405 get_optional_pkey_id(SN_magma_mac
);
406 if (ssl_mac_pkey_id
[SSL_MD_MAGMAOMAC_IDX
])
407 ctx
->ssl_mac_secret_size
[SSL_MD_MAGMAOMAC_IDX
] = 32;
409 disabled_mac_mask
|= SSL_MAGMAOMAC
;
411 ssl_mac_pkey_id
[SSL_MD_KUZNYECHIKOMAC_IDX
] =
412 get_optional_pkey_id(SN_kuznyechik_mac
);
413 if (ssl_mac_pkey_id
[SSL_MD_KUZNYECHIKOMAC_IDX
])
414 ctx
->ssl_mac_secret_size
[SSL_MD_KUZNYECHIKOMAC_IDX
] = 32;
416 disabled_mac_mask
|= SSL_KUZNYECHIKOMAC
;
418 if (!get_optional_pkey_id(SN_id_GostR3410_2001
))
419 disabled_auth_mask
|= SSL_aGOST01
| SSL_aGOST12
;
420 if (!get_optional_pkey_id(SN_id_GostR3410_2012_256
))
421 disabled_auth_mask
|= SSL_aGOST12
;
422 if (!get_optional_pkey_id(SN_id_GostR3410_2012_512
))
423 disabled_auth_mask
|= SSL_aGOST12
;
425 * Disable GOST key exchange if no GOST signature algs are available *
427 if ((disabled_auth_mask
& (SSL_aGOST01
| SSL_aGOST12
)) ==
428 (SSL_aGOST01
| SSL_aGOST12
))
429 disabled_mkey_mask
|= SSL_kGOST
;
431 if ((disabled_auth_mask
& SSL_aGOST12
) == SSL_aGOST12
)
432 disabled_mkey_mask
|= SSL_kGOST18
;
437 #ifndef OPENSSL_NO_COMP
439 static int sk_comp_cmp(const SSL_COMP
*const *a
, const SSL_COMP
*const *b
)
441 return ((*a
)->id
- (*b
)->id
);
444 DEFINE_RUN_ONCE_STATIC(do_load_builtin_compressions
)
446 SSL_COMP
*comp
= NULL
;
447 COMP_METHOD
*method
= COMP_zlib();
449 ssl_comp_methods
= sk_SSL_COMP_new(sk_comp_cmp
);
451 if (COMP_get_type(method
) != NID_undef
&& ssl_comp_methods
!= NULL
) {
452 comp
= OPENSSL_malloc(sizeof(*comp
));
454 comp
->method
= method
;
455 comp
->id
= SSL_COMP_ZLIB_IDX
;
456 comp
->name
= COMP_get_name(method
);
457 sk_SSL_COMP_push(ssl_comp_methods
, comp
);
458 sk_SSL_COMP_sort(ssl_comp_methods
);
464 static int load_builtin_compressions(void)
466 return RUN_ONCE(&ssl_load_builtin_comp_once
, do_load_builtin_compressions
);
470 int ssl_cipher_get_evp_cipher(SSL_CTX
*ctx
, const SSL_CIPHER
*sslc
,
471 const EVP_CIPHER
**enc
)
473 int i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, sslc
->algorithm_enc
);
478 if (i
== SSL_ENC_NULL_IDX
) {
480 * We assume we don't care about this coming from an ENGINE so
481 * just do a normal EVP_CIPHER_fetch instead of
482 * ssl_evp_cipher_fetch()
484 *enc
= EVP_CIPHER_fetch(ctx
->libctx
, "NULL", ctx
->propq
);
488 const EVP_CIPHER
*cipher
= ctx
->ssl_cipher_methods
[i
];
491 || !ssl_evp_cipher_up_ref(cipher
))
493 *enc
= ctx
->ssl_cipher_methods
[i
];
499 int ssl_cipher_get_evp(SSL_CTX
*ctx
, const SSL_SESSION
*s
,
500 const EVP_CIPHER
**enc
, const EVP_MD
**md
,
501 int *mac_pkey_type
, size_t *mac_secret_size
,
502 SSL_COMP
**comp
, int use_etm
)
512 #ifndef OPENSSL_NO_COMP
513 if (!load_builtin_compressions()) {
515 * Currently don't care, since a failure only means that
516 * ssl_comp_methods is NULL, which is perfectly OK
521 ctmp
.id
= s
->compress_meth
;
522 if (ssl_comp_methods
!= NULL
) {
523 i
= sk_SSL_COMP_find(ssl_comp_methods
, &ctmp
);
524 *comp
= sk_SSL_COMP_value(ssl_comp_methods
, i
);
526 /* If were only interested in comp then return success */
527 if ((enc
== NULL
) && (md
== NULL
))
531 if ((enc
== NULL
) || (md
== NULL
))
534 if (!ssl_cipher_get_evp_cipher(ctx
, c
, enc
))
537 i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
540 if (mac_pkey_type
!= NULL
)
541 *mac_pkey_type
= NID_undef
;
542 if (mac_secret_size
!= NULL
)
543 *mac_secret_size
= 0;
544 if (c
->algorithm_mac
== SSL_AEAD
)
545 mac_pkey_type
= NULL
;
547 if (!ssl_evp_md_up_ref(ctx
->ssl_digest_methods
[i
])) {
548 ssl_evp_cipher_free(*enc
);
551 *md
= ctx
->ssl_digest_methods
[i
];
552 if (mac_pkey_type
!= NULL
)
553 *mac_pkey_type
= ssl_mac_pkey_id
[i
];
554 if (mac_secret_size
!= NULL
)
555 *mac_secret_size
= ctx
->ssl_mac_secret_size
[i
];
558 if ((*enc
!= NULL
) &&
559 (*md
!= NULL
|| (EVP_CIPHER_flags(*enc
) & EVP_CIPH_FLAG_AEAD_CIPHER
))
560 && (!mac_pkey_type
|| *mac_pkey_type
!= NID_undef
)) {
561 const EVP_CIPHER
*evp
= NULL
;
564 || s
->ssl_version
>> 8 != TLS1_VERSION_MAJOR
565 || s
->ssl_version
< TLS1_VERSION
)
568 if (c
->algorithm_enc
== SSL_RC4
569 && c
->algorithm_mac
== SSL_MD5
)
570 evp
= ssl_evp_cipher_fetch(ctx
->libctx
, NID_rc4_hmac_md5
,
572 else if (c
->algorithm_enc
== SSL_AES128
573 && c
->algorithm_mac
== SSL_SHA1
)
574 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
575 NID_aes_128_cbc_hmac_sha1
,
577 else if (c
->algorithm_enc
== SSL_AES256
578 && c
->algorithm_mac
== SSL_SHA1
)
579 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
580 NID_aes_256_cbc_hmac_sha1
,
582 else if (c
->algorithm_enc
== SSL_AES128
583 && c
->algorithm_mac
== SSL_SHA256
)
584 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
585 NID_aes_128_cbc_hmac_sha256
,
587 else if (c
->algorithm_enc
== SSL_AES256
588 && c
->algorithm_mac
== SSL_SHA256
)
589 evp
= ssl_evp_cipher_fetch(ctx
->libctx
,
590 NID_aes_256_cbc_hmac_sha256
,
594 ssl_evp_cipher_free(*enc
);
595 ssl_evp_md_free(*md
);
605 const EVP_MD
*ssl_md(SSL_CTX
*ctx
, int idx
)
607 idx
&= SSL_HANDSHAKE_MAC_MASK
;
608 if (idx
< 0 || idx
>= SSL_MD_NUM_IDX
)
610 return ctx
->ssl_digest_methods
[idx
];
613 const EVP_MD
*ssl_handshake_md(SSL
*s
)
615 return ssl_md(s
->ctx
, ssl_get_algorithm2(s
));
618 const EVP_MD
*ssl_prf_md(SSL
*s
)
620 return ssl_md(s
->ctx
, ssl_get_algorithm2(s
) >> TLS1_PRF_DGST_SHIFT
);
623 #define ITEM_SEP(a) \
624 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
626 static void ll_append_tail(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
633 if (curr
->prev
!= NULL
)
634 curr
->prev
->next
= curr
->next
;
635 if (curr
->next
!= NULL
)
636 curr
->next
->prev
= curr
->prev
;
637 (*tail
)->next
= curr
;
643 static void ll_append_head(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
650 if (curr
->next
!= NULL
)
651 curr
->next
->prev
= curr
->prev
;
652 if (curr
->prev
!= NULL
)
653 curr
->prev
->next
= curr
->next
;
654 (*head
)->prev
= curr
;
660 static void ssl_cipher_collect_ciphers(const SSL_METHOD
*ssl_method
,
662 uint32_t disabled_mkey
,
663 uint32_t disabled_auth
,
664 uint32_t disabled_enc
,
665 uint32_t disabled_mac
,
666 CIPHER_ORDER
*co_list
,
667 CIPHER_ORDER
**head_p
,
668 CIPHER_ORDER
**tail_p
)
674 * We have num_of_ciphers descriptions compiled in, depending on the
675 * method selected (SSLv3, TLSv1 etc).
676 * These will later be sorted in a linked list with at most num
680 /* Get the initial list of ciphers */
681 co_list_num
= 0; /* actual count of ciphers */
682 for (i
= 0; i
< num_of_ciphers
; i
++) {
683 c
= ssl_method
->get_cipher(i
);
684 /* drop those that use any of that is not available */
685 if (c
== NULL
|| !c
->valid
)
687 if ((c
->algorithm_mkey
& disabled_mkey
) ||
688 (c
->algorithm_auth
& disabled_auth
) ||
689 (c
->algorithm_enc
& disabled_enc
) ||
690 (c
->algorithm_mac
& disabled_mac
))
692 if (((ssl_method
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
) == 0) &&
695 if (((ssl_method
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
) != 0) &&
699 co_list
[co_list_num
].cipher
= c
;
700 co_list
[co_list_num
].next
= NULL
;
701 co_list
[co_list_num
].prev
= NULL
;
702 co_list
[co_list_num
].active
= 0;
707 * Prepare linked list from list entries
709 if (co_list_num
> 0) {
710 co_list
[0].prev
= NULL
;
712 if (co_list_num
> 1) {
713 co_list
[0].next
= &co_list
[1];
715 for (i
= 1; i
< co_list_num
- 1; i
++) {
716 co_list
[i
].prev
= &co_list
[i
- 1];
717 co_list
[i
].next
= &co_list
[i
+ 1];
720 co_list
[co_list_num
- 1].prev
= &co_list
[co_list_num
- 2];
723 co_list
[co_list_num
- 1].next
= NULL
;
725 *head_p
= &co_list
[0];
726 *tail_p
= &co_list
[co_list_num
- 1];
730 static void ssl_cipher_collect_aliases(const SSL_CIPHER
**ca_list
,
731 int num_of_group_aliases
,
732 uint32_t disabled_mkey
,
733 uint32_t disabled_auth
,
734 uint32_t disabled_enc
,
735 uint32_t disabled_mac
,
738 CIPHER_ORDER
*ciph_curr
;
739 const SSL_CIPHER
**ca_curr
;
741 uint32_t mask_mkey
= ~disabled_mkey
;
742 uint32_t mask_auth
= ~disabled_auth
;
743 uint32_t mask_enc
= ~disabled_enc
;
744 uint32_t mask_mac
= ~disabled_mac
;
747 * First, add the real ciphers as already collected
751 while (ciph_curr
!= NULL
) {
752 *ca_curr
= ciph_curr
->cipher
;
754 ciph_curr
= ciph_curr
->next
;
758 * Now we add the available ones from the cipher_aliases[] table.
759 * They represent either one or more algorithms, some of which
760 * in any affected category must be supported (set in enabled_mask),
761 * or represent a cipher strength value (will be added in any case because algorithms=0).
763 for (i
= 0; i
< num_of_group_aliases
; i
++) {
764 uint32_t algorithm_mkey
= cipher_aliases
[i
].algorithm_mkey
;
765 uint32_t algorithm_auth
= cipher_aliases
[i
].algorithm_auth
;
766 uint32_t algorithm_enc
= cipher_aliases
[i
].algorithm_enc
;
767 uint32_t algorithm_mac
= cipher_aliases
[i
].algorithm_mac
;
770 if ((algorithm_mkey
& mask_mkey
) == 0)
774 if ((algorithm_auth
& mask_auth
) == 0)
778 if ((algorithm_enc
& mask_enc
) == 0)
782 if ((algorithm_mac
& mask_mac
) == 0)
785 *ca_curr
= (SSL_CIPHER
*)(cipher_aliases
+ i
);
789 *ca_curr
= NULL
; /* end of list */
792 static void ssl_cipher_apply_rule(uint32_t cipher_id
, uint32_t alg_mkey
,
793 uint32_t alg_auth
, uint32_t alg_enc
,
794 uint32_t alg_mac
, int min_tls
,
795 uint32_t algo_strength
, int rule
,
796 int32_t strength_bits
, CIPHER_ORDER
**head_p
,
797 CIPHER_ORDER
**tail_p
)
799 CIPHER_ORDER
*head
, *tail
, *curr
, *next
, *last
;
800 const SSL_CIPHER
*cp
;
803 OSSL_TRACE_BEGIN(TLS_CIPHER
){
805 "Applying rule %d with %08x/%08x/%08x/%08x/%08x %08x (%d)\n",
806 rule
, alg_mkey
, alg_auth
, alg_enc
, alg_mac
, min_tls
,
807 algo_strength
, strength_bits
);
810 if (rule
== CIPHER_DEL
|| rule
== CIPHER_BUMP
)
811 reverse
= 1; /* needed to maintain sorting between currently
835 next
= reverse
? curr
->prev
: curr
->next
;
840 * Selection criteria is either the value of strength_bits
841 * or the algorithms used.
843 if (strength_bits
>= 0) {
844 if (strength_bits
!= cp
->strength_bits
)
847 if (trc_out
!= NULL
) {
850 "\nAlgo = %08x/%08x/%08x/%08x/%08x Algo_strength = %08x\n",
851 cp
->name
, cp
->algorithm_mkey
, cp
->algorithm_auth
,
852 cp
->algorithm_enc
, cp
->algorithm_mac
, cp
->min_tls
,
855 if (cipher_id
!= 0 && (cipher_id
!= cp
->id
))
857 if (alg_mkey
&& !(alg_mkey
& cp
->algorithm_mkey
))
859 if (alg_auth
&& !(alg_auth
& cp
->algorithm_auth
))
861 if (alg_enc
&& !(alg_enc
& cp
->algorithm_enc
))
863 if (alg_mac
&& !(alg_mac
& cp
->algorithm_mac
))
865 if (min_tls
&& (min_tls
!= cp
->min_tls
))
867 if ((algo_strength
& SSL_STRONG_MASK
)
868 && !(algo_strength
& SSL_STRONG_MASK
& cp
->algo_strength
))
870 if ((algo_strength
& SSL_DEFAULT_MASK
)
871 && !(algo_strength
& SSL_DEFAULT_MASK
& cp
->algo_strength
))
876 BIO_printf(trc_out
, "Action = %d\n", rule
);
878 /* add the cipher if it has not been added yet. */
879 if (rule
== CIPHER_ADD
) {
882 ll_append_tail(&head
, curr
, &tail
);
886 /* Move the added cipher to this location */
887 else if (rule
== CIPHER_ORD
) {
890 ll_append_tail(&head
, curr
, &tail
);
892 } else if (rule
== CIPHER_DEL
) {
896 * most recently deleted ciphersuites get best positions for
897 * any future CIPHER_ADD (note that the CIPHER_DEL loop works
898 * in reverse to maintain the order)
900 ll_append_head(&head
, curr
, &tail
);
903 } else if (rule
== CIPHER_BUMP
) {
905 ll_append_head(&head
, curr
, &tail
);
906 } else if (rule
== CIPHER_KILL
) {
911 curr
->prev
->next
= curr
->next
;
915 if (curr
->next
!= NULL
)
916 curr
->next
->prev
= curr
->prev
;
917 if (curr
->prev
!= NULL
)
918 curr
->prev
->next
= curr
->next
;
927 OSSL_TRACE_END(TLS_CIPHER
);
930 static int ssl_cipher_strength_sort(CIPHER_ORDER
**head_p
,
931 CIPHER_ORDER
**tail_p
)
933 int32_t max_strength_bits
;
938 * This routine sorts the ciphers with descending strength. The sorting
939 * must keep the pre-sorted sequence, so we apply the normal sorting
940 * routine as '+' movement to the end of the list.
942 max_strength_bits
= 0;
944 while (curr
!= NULL
) {
945 if (curr
->active
&& (curr
->cipher
->strength_bits
> max_strength_bits
))
946 max_strength_bits
= curr
->cipher
->strength_bits
;
950 number_uses
= OPENSSL_zalloc(sizeof(int) * (max_strength_bits
+ 1));
951 if (number_uses
== NULL
) {
952 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT
, ERR_R_MALLOC_FAILURE
);
957 * Now find the strength_bits values actually used
960 while (curr
!= NULL
) {
962 number_uses
[curr
->cipher
->strength_bits
]++;
966 * Go through the list of used strength_bits values in descending
969 for (i
= max_strength_bits
; i
>= 0; i
--)
970 if (number_uses
[i
] > 0)
971 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD
, i
, head_p
,
974 OPENSSL_free(number_uses
);
978 static int ssl_cipher_process_rulestr(const char *rule_str
,
979 CIPHER_ORDER
**head_p
,
980 CIPHER_ORDER
**tail_p
,
981 const SSL_CIPHER
**ca_list
, CERT
*c
)
983 uint32_t alg_mkey
, alg_auth
, alg_enc
, alg_mac
, algo_strength
;
986 int j
, multi
, found
, rule
, retval
, ok
, buflen
;
987 uint32_t cipher_id
= 0;
1000 } else if (ch
== '+') {
1003 } else if (ch
== '!') {
1006 } else if (ch
== '@') {
1007 rule
= CIPHER_SPECIAL
;
1029 #ifndef CHARSET_EBCDIC
1030 while (((ch
>= 'A') && (ch
<= 'Z')) ||
1031 ((ch
>= '0') && (ch
<= '9')) ||
1032 ((ch
>= 'a') && (ch
<= 'z')) ||
1033 (ch
== '-') || (ch
== '.') || (ch
== '='))
1035 while (isalnum((unsigned char)ch
) || (ch
== '-') || (ch
== '.')
1045 * We hit something we cannot deal with,
1046 * it is no command or separator nor
1047 * alphanumeric, so we call this an error.
1049 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
, SSL_R_INVALID_COMMAND
);
1055 if (rule
== CIPHER_SPECIAL
) {
1056 found
= 0; /* unused -- avoid compiler warning */
1057 break; /* special treatment */
1060 /* check for multi-part specification */
1069 * Now search for the cipher alias in the ca_list. Be careful
1070 * with the strncmp, because the "buflen" limitation
1071 * will make the rule "ADH:SOME" and the cipher
1072 * "ADH-MY-CIPHER" look like a match for buflen=3.
1073 * So additionally check whether the cipher name found
1074 * has the correct length. We can save a strlen() call:
1075 * just checking for the '\0' at the right place is
1076 * sufficient, we have to strncmp() anyway. (We cannot
1077 * use strcmp(), because buf is not '\0' terminated.)
1081 while (ca_list
[j
]) {
1082 if (strncmp(buf
, ca_list
[j
]->name
, buflen
) == 0
1083 && (ca_list
[j
]->name
[buflen
] == '\0')) {
1091 break; /* ignore this entry */
1093 if (ca_list
[j
]->algorithm_mkey
) {
1095 alg_mkey
&= ca_list
[j
]->algorithm_mkey
;
1101 alg_mkey
= ca_list
[j
]->algorithm_mkey
;
1105 if (ca_list
[j
]->algorithm_auth
) {
1107 alg_auth
&= ca_list
[j
]->algorithm_auth
;
1113 alg_auth
= ca_list
[j
]->algorithm_auth
;
1117 if (ca_list
[j
]->algorithm_enc
) {
1119 alg_enc
&= ca_list
[j
]->algorithm_enc
;
1125 alg_enc
= ca_list
[j
]->algorithm_enc
;
1129 if (ca_list
[j
]->algorithm_mac
) {
1131 alg_mac
&= ca_list
[j
]->algorithm_mac
;
1137 alg_mac
= ca_list
[j
]->algorithm_mac
;
1141 if (ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
) {
1142 if (algo_strength
& SSL_STRONG_MASK
) {
1144 (ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
) |
1146 if (!(algo_strength
& SSL_STRONG_MASK
)) {
1151 algo_strength
= ca_list
[j
]->algo_strength
& SSL_STRONG_MASK
;
1155 if (ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
) {
1156 if (algo_strength
& SSL_DEFAULT_MASK
) {
1158 (ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
) |
1160 if (!(algo_strength
& SSL_DEFAULT_MASK
)) {
1166 ca_list
[j
]->algo_strength
& SSL_DEFAULT_MASK
;
1170 if (ca_list
[j
]->valid
) {
1172 * explicit ciphersuite found; its protocol version does not
1173 * become part of the search pattern!
1176 cipher_id
= ca_list
[j
]->id
;
1179 * not an explicit ciphersuite; only in this case, the
1180 * protocol version is considered part of the search pattern
1183 if (ca_list
[j
]->min_tls
) {
1184 if (min_tls
!= 0 && min_tls
!= ca_list
[j
]->min_tls
) {
1188 min_tls
= ca_list
[j
]->min_tls
;
1198 * Ok, we have the rule, now apply it
1200 if (rule
== CIPHER_SPECIAL
) { /* special command */
1202 if ((buflen
== 8) && strncmp(buf
, "STRENGTH", 8) == 0) {
1203 ok
= ssl_cipher_strength_sort(head_p
, tail_p
);
1204 } else if (buflen
== 10 && strncmp(buf
, "SECLEVEL=", 9) == 0) {
1205 int level
= buf
[9] - '0';
1206 if (level
< 0 || level
> 5) {
1207 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
1208 SSL_R_INVALID_COMMAND
);
1210 c
->sec_level
= level
;
1214 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
, SSL_R_INVALID_COMMAND
);
1219 * We do not support any "multi" options
1220 * together with "@", so throw away the
1221 * rest of the command, if any left, until
1222 * end or ':' is found.
1224 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1227 ssl_cipher_apply_rule(cipher_id
,
1228 alg_mkey
, alg_auth
, alg_enc
, alg_mac
,
1229 min_tls
, algo_strength
, rule
, -1, head_p
,
1232 while ((*l
!= '\0') && !ITEM_SEP(*l
))
1242 #ifndef OPENSSL_NO_EC
1243 static int check_suiteb_cipher_list(const SSL_METHOD
*meth
, CERT
*c
,
1244 const char **prule_str
)
1246 unsigned int suiteb_flags
= 0, suiteb_comb2
= 0;
1247 if (strncmp(*prule_str
, "SUITEB128ONLY", 13) == 0) {
1248 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS_ONLY
;
1249 } else if (strncmp(*prule_str
, "SUITEB128C2", 11) == 0) {
1251 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1252 } else if (strncmp(*prule_str
, "SUITEB128", 9) == 0) {
1253 suiteb_flags
= SSL_CERT_FLAG_SUITEB_128_LOS
;
1254 } else if (strncmp(*prule_str
, "SUITEB192", 9) == 0) {
1255 suiteb_flags
= SSL_CERT_FLAG_SUITEB_192_LOS
;
1259 c
->cert_flags
&= ~SSL_CERT_FLAG_SUITEB_128_LOS
;
1260 c
->cert_flags
|= suiteb_flags
;
1262 suiteb_flags
= c
->cert_flags
& SSL_CERT_FLAG_SUITEB_128_LOS
;
1267 /* Check version: if TLS 1.2 ciphers allowed we can use Suite B */
1269 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_TLS1_2_CIPHERS
)) {
1270 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST
,
1271 SSL_R_AT_LEAST_TLS_1_2_NEEDED_IN_SUITEB_MODE
);
1274 # ifndef OPENSSL_NO_EC
1275 switch (suiteb_flags
) {
1276 case SSL_CERT_FLAG_SUITEB_128_LOS
:
1278 *prule_str
= "ECDHE-ECDSA-AES256-GCM-SHA384";
1281 "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384";
1283 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY
:
1284 *prule_str
= "ECDHE-ECDSA-AES128-GCM-SHA256";
1286 case SSL_CERT_FLAG_SUITEB_192_LOS
:
1287 *prule_str
= "ECDHE-ECDSA-AES256-GCM-SHA384";
1292 SSLerr(SSL_F_CHECK_SUITEB_CIPHER_LIST
, SSL_R_ECDH_REQUIRED_FOR_SUITEB_MODE
);
1298 static int ciphersuite_cb(const char *elem
, int len
, void *arg
)
1300 STACK_OF(SSL_CIPHER
) *ciphersuites
= (STACK_OF(SSL_CIPHER
) *)arg
;
1301 const SSL_CIPHER
*cipher
;
1302 /* Arbitrary sized temp buffer for the cipher name. Should be big enough */
1305 if (len
> (int)(sizeof(name
) - 1)) {
1306 SSLerr(SSL_F_CIPHERSUITE_CB
, SSL_R_NO_CIPHER_MATCH
);
1310 memcpy(name
, elem
, len
);
1313 cipher
= ssl3_get_cipher_by_std_name(name
);
1314 if (cipher
== NULL
) {
1315 SSLerr(SSL_F_CIPHERSUITE_CB
, SSL_R_NO_CIPHER_MATCH
);
1319 if (!sk_SSL_CIPHER_push(ciphersuites
, cipher
)) {
1320 SSLerr(SSL_F_CIPHERSUITE_CB
, ERR_R_INTERNAL_ERROR
);
1327 static __owur
int set_ciphersuites(STACK_OF(SSL_CIPHER
) **currciphers
, const char *str
)
1329 STACK_OF(SSL_CIPHER
) *newciphers
= sk_SSL_CIPHER_new_null();
1331 if (newciphers
== NULL
)
1334 /* Parse the list. We explicitly allow an empty list */
1336 && !CONF_parse_list(str
, ':', 1, ciphersuite_cb
, newciphers
)) {
1337 sk_SSL_CIPHER_free(newciphers
);
1340 sk_SSL_CIPHER_free(*currciphers
);
1341 *currciphers
= newciphers
;
1346 static int update_cipher_list_by_id(STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1347 STACK_OF(SSL_CIPHER
) *cipherstack
)
1349 STACK_OF(SSL_CIPHER
) *tmp_cipher_list
= sk_SSL_CIPHER_dup(cipherstack
);
1351 if (tmp_cipher_list
== NULL
) {
1355 sk_SSL_CIPHER_free(*cipher_list_by_id
);
1356 *cipher_list_by_id
= tmp_cipher_list
;
1358 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id
, ssl_cipher_ptr_id_cmp
);
1359 sk_SSL_CIPHER_sort(*cipher_list_by_id
);
1364 static int update_cipher_list(STACK_OF(SSL_CIPHER
) **cipher_list
,
1365 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1366 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
)
1369 STACK_OF(SSL_CIPHER
) *tmp_cipher_list
= sk_SSL_CIPHER_dup(*cipher_list
);
1371 if (tmp_cipher_list
== NULL
)
1375 * Delete any existing TLSv1.3 ciphersuites. These are always first in the
1378 while (sk_SSL_CIPHER_num(tmp_cipher_list
) > 0
1379 && sk_SSL_CIPHER_value(tmp_cipher_list
, 0)->min_tls
1381 sk_SSL_CIPHER_delete(tmp_cipher_list
, 0);
1383 /* Insert the new TLSv1.3 ciphersuites */
1384 for (i
= 0; i
< sk_SSL_CIPHER_num(tls13_ciphersuites
); i
++)
1385 sk_SSL_CIPHER_insert(tmp_cipher_list
,
1386 sk_SSL_CIPHER_value(tls13_ciphersuites
, i
), i
);
1388 if (!update_cipher_list_by_id(cipher_list_by_id
, tmp_cipher_list
))
1391 sk_SSL_CIPHER_free(*cipher_list
);
1392 *cipher_list
= tmp_cipher_list
;
1397 int SSL_CTX_set_ciphersuites(SSL_CTX
*ctx
, const char *str
)
1399 int ret
= set_ciphersuites(&(ctx
->tls13_ciphersuites
), str
);
1401 if (ret
&& ctx
->cipher_list
!= NULL
)
1402 return update_cipher_list(&ctx
->cipher_list
, &ctx
->cipher_list_by_id
,
1403 ctx
->tls13_ciphersuites
);
1408 int SSL_set_ciphersuites(SSL
*s
, const char *str
)
1410 STACK_OF(SSL_CIPHER
) *cipher_list
;
1411 int ret
= set_ciphersuites(&(s
->tls13_ciphersuites
), str
);
1413 if (s
->cipher_list
== NULL
) {
1414 if ((cipher_list
= SSL_get_ciphers(s
)) != NULL
)
1415 s
->cipher_list
= sk_SSL_CIPHER_dup(cipher_list
);
1417 if (ret
&& s
->cipher_list
!= NULL
)
1418 return update_cipher_list(&s
->cipher_list
, &s
->cipher_list_by_id
,
1419 s
->tls13_ciphersuites
);
1424 STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*ssl_method
,
1425 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
,
1426 STACK_OF(SSL_CIPHER
) **cipher_list
,
1427 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
1428 const char *rule_str
,
1431 int ok
, num_of_ciphers
, num_of_alias_max
, num_of_group_aliases
, i
;
1432 uint32_t disabled_mkey
, disabled_auth
, disabled_enc
, disabled_mac
;
1433 STACK_OF(SSL_CIPHER
) *cipherstack
;
1435 CIPHER_ORDER
*co_list
= NULL
, *head
= NULL
, *tail
= NULL
, *curr
;
1436 const SSL_CIPHER
**ca_list
= NULL
;
1439 * Return with error if nothing to do.
1441 if (rule_str
== NULL
|| cipher_list
== NULL
|| cipher_list_by_id
== NULL
)
1443 #ifndef OPENSSL_NO_EC
1444 if (!check_suiteb_cipher_list(ssl_method
, c
, &rule_str
))
1449 * To reduce the work to do we only want to process the compiled
1450 * in algorithms, so we first get the mask of disabled ciphers.
1453 disabled_mkey
= disabled_mkey_mask
;
1454 disabled_auth
= disabled_auth_mask
;
1455 disabled_enc
= disabled_enc_mask
;
1456 disabled_mac
= disabled_mac_mask
;
1459 * Now we have to collect the available ciphers from the compiled
1460 * in ciphers. We cannot get more than the number compiled in, so
1461 * it is used for allocation.
1463 num_of_ciphers
= ssl_method
->num_ciphers();
1465 co_list
= OPENSSL_malloc(sizeof(*co_list
) * num_of_ciphers
);
1466 if (co_list
== NULL
) {
1467 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
1468 return NULL
; /* Failure */
1471 ssl_cipher_collect_ciphers(ssl_method
, num_of_ciphers
,
1472 disabled_mkey
, disabled_auth
, disabled_enc
,
1473 disabled_mac
, co_list
, &head
, &tail
);
1475 /* Now arrange all ciphers by preference. */
1478 * Everything else being equal, prefer ephemeral ECDH over other key
1479 * exchange mechanisms.
1480 * For consistency, prefer ECDSA over RSA (though this only matters if the
1481 * server has both certificates, and is using the DEFAULT, or a client
1484 ssl_cipher_apply_rule(0, SSL_kECDHE
, SSL_aECDSA
, 0, 0, 0, 0, CIPHER_ADD
,
1486 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
,
1488 ssl_cipher_apply_rule(0, SSL_kECDHE
, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
,
1491 /* Within each strength group, we prefer GCM over CHACHA... */
1492 ssl_cipher_apply_rule(0, 0, 0, SSL_AESGCM
, 0, 0, 0, CIPHER_ADD
, -1,
1494 ssl_cipher_apply_rule(0, 0, 0, SSL_CHACHA20
, 0, 0, 0, CIPHER_ADD
, -1,
1498 * ...and generally, our preferred cipher is AES.
1499 * Note that AEADs will be bumped to take preference after sorting by
1502 ssl_cipher_apply_rule(0, 0, 0, SSL_AES
^ SSL_AESGCM
, 0, 0, 0, CIPHER_ADD
,
1505 /* Temporarily enable everything else for sorting */
1506 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD
, -1, &head
, &tail
);
1508 /* Low priority for MD5 */
1509 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5
, 0, 0, CIPHER_ORD
, -1, &head
,
1513 * Move anonymous ciphers to the end. Usually, these will remain
1514 * disabled. (For applications that allow them, they aren't too bad, but
1515 * we prefer authenticated ciphers.)
1517 ssl_cipher_apply_rule(0, 0, SSL_aNULL
, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1520 ssl_cipher_apply_rule(0, SSL_kRSA
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1522 ssl_cipher_apply_rule(0, SSL_kPSK
, 0, 0, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1525 /* RC4 is sort-of broken -- move to the end */
1526 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4
, 0, 0, 0, CIPHER_ORD
, -1, &head
,
1530 * Now sort by symmetric encryption strength. The above ordering remains
1531 * in force within each class
1533 if (!ssl_cipher_strength_sort(&head
, &tail
)) {
1534 OPENSSL_free(co_list
);
1539 * Partially overrule strength sort to prefer TLS 1.2 ciphers/PRFs.
1540 * TODO(openssl-team): is there an easier way to accomplish all this?
1542 ssl_cipher_apply_rule(0, 0, 0, 0, 0, TLS1_2_VERSION
, 0, CIPHER_BUMP
, -1,
1546 * Irrespective of strength, enforce the following order:
1547 * (EC)DHE + AEAD > (EC)DHE > rest of AEAD > rest.
1548 * Within each group, ciphers remain sorted by strength and previous
1553 * 4) TLS 1.2 > legacy
1555 * Because we now bump ciphers to the top of the list, we proceed in
1556 * reverse order of preference.
1558 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_AEAD
, 0, 0, CIPHER_BUMP
, -1,
1560 ssl_cipher_apply_rule(0, SSL_kDHE
| SSL_kECDHE
, 0, 0, 0, 0, 0,
1561 CIPHER_BUMP
, -1, &head
, &tail
);
1562 ssl_cipher_apply_rule(0, SSL_kDHE
| SSL_kECDHE
, 0, 0, SSL_AEAD
, 0, 0,
1563 CIPHER_BUMP
, -1, &head
, &tail
);
1565 /* Now disable everything (maintaining the ordering!) */
1566 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL
, -1, &head
, &tail
);
1569 * We also need cipher aliases for selecting based on the rule_str.
1570 * There might be two types of entries in the rule_str: 1) names
1571 * of ciphers themselves 2) aliases for groups of ciphers.
1572 * For 1) we need the available ciphers and for 2) the cipher
1573 * groups of cipher_aliases added together in one list (otherwise
1574 * we would be happy with just the cipher_aliases table).
1576 num_of_group_aliases
= OSSL_NELEM(cipher_aliases
);
1577 num_of_alias_max
= num_of_ciphers
+ num_of_group_aliases
+ 1;
1578 ca_list
= OPENSSL_malloc(sizeof(*ca_list
) * num_of_alias_max
);
1579 if (ca_list
== NULL
) {
1580 OPENSSL_free(co_list
);
1581 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
1582 return NULL
; /* Failure */
1584 ssl_cipher_collect_aliases(ca_list
, num_of_group_aliases
,
1585 disabled_mkey
, disabled_auth
, disabled_enc
,
1586 disabled_mac
, head
);
1589 * If the rule_string begins with DEFAULT, apply the default rule
1590 * before using the (possibly available) additional rules.
1594 if (strncmp(rule_str
, "DEFAULT", 7) == 0) {
1595 ok
= ssl_cipher_process_rulestr(OSSL_default_cipher_list(),
1596 &head
, &tail
, ca_list
, c
);
1602 if (ok
&& (rule_p
[0] != '\0'))
1603 ok
= ssl_cipher_process_rulestr(rule_p
, &head
, &tail
, ca_list
, c
);
1605 OPENSSL_free(ca_list
); /* Not needed anymore */
1607 if (!ok
) { /* Rule processing failure */
1608 OPENSSL_free(co_list
);
1613 * Allocate new "cipherstack" for the result, return with error
1614 * if we cannot get one.
1616 if ((cipherstack
= sk_SSL_CIPHER_new_null()) == NULL
) {
1617 OPENSSL_free(co_list
);
1621 /* Add TLSv1.3 ciphers first - we always prefer those if possible */
1622 for (i
= 0; i
< sk_SSL_CIPHER_num(tls13_ciphersuites
); i
++) {
1623 const SSL_CIPHER
*sslc
= sk_SSL_CIPHER_value(tls13_ciphersuites
, i
);
1625 /* Don't include any TLSv1.3 ciphers that are disabled */
1626 if ((sslc
->algorithm_enc
& disabled_enc
) != 0
1627 || (ssl_cipher_table_mac
[sslc
->algorithm2
1628 & SSL_HANDSHAKE_MAC_MASK
].mask
1629 & disabled_mac_mask
) != 0)
1632 if (!sk_SSL_CIPHER_push(cipherstack
, sslc
)) {
1633 sk_SSL_CIPHER_free(cipherstack
);
1638 OSSL_TRACE_BEGIN(TLS_CIPHER
) {
1639 BIO_printf(trc_out
, "cipher selection:\n");
1642 * The cipher selection for the list is done. The ciphers are added
1643 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1645 for (curr
= head
; curr
!= NULL
; curr
= curr
->next
) {
1647 if (!sk_SSL_CIPHER_push(cipherstack
, curr
->cipher
)) {
1648 OPENSSL_free(co_list
);
1649 sk_SSL_CIPHER_free(cipherstack
);
1650 OSSL_TRACE_CANCEL(TLS_CIPHER
);
1653 if (trc_out
!= NULL
)
1654 BIO_printf(trc_out
, "<%s>\n", curr
->cipher
->name
);
1657 OPENSSL_free(co_list
); /* Not needed any longer */
1658 OSSL_TRACE_END(TLS_CIPHER
);
1660 if (!update_cipher_list_by_id(cipher_list_by_id
, cipherstack
)) {
1661 sk_SSL_CIPHER_free(cipherstack
);
1664 sk_SSL_CIPHER_free(*cipher_list
);
1665 *cipher_list
= cipherstack
;
1670 char *SSL_CIPHER_description(const SSL_CIPHER
*cipher
, char *buf
, int len
)
1673 const char *kx
, *au
, *enc
, *mac
;
1674 uint32_t alg_mkey
, alg_auth
, alg_enc
, alg_mac
;
1675 static const char *format
= "%-30s %-7s Kx=%-8s Au=%-5s Enc=%-9s Mac=%-4s\n";
1679 if ((buf
= OPENSSL_malloc(len
)) == NULL
) {
1680 SSLerr(SSL_F_SSL_CIPHER_DESCRIPTION
, ERR_R_MALLOC_FAILURE
);
1683 } else if (len
< 128) {
1687 alg_mkey
= cipher
->algorithm_mkey
;
1688 alg_auth
= cipher
->algorithm_auth
;
1689 alg_enc
= cipher
->algorithm_enc
;
1690 alg_mac
= cipher
->algorithm_mac
;
1692 ver
= ssl_protocol_to_string(cipher
->min_tls
);
1754 /* New GOST ciphersuites have both SSL_aGOST12 and SSL_aGOST01 bits */
1755 case (SSL_aGOST12
| SSL_aGOST01
):
1792 enc
= "AESGCM(128)";
1795 enc
= "AESGCM(256)";
1798 enc
= "AESCCM(128)";
1801 enc
= "AESCCM(256)";
1803 case SSL_AES128CCM8
:
1804 enc
= "AESCCM8(128)";
1806 case SSL_AES256CCM8
:
1807 enc
= "AESCCM8(256)";
1809 case SSL_CAMELLIA128
:
1810 enc
= "Camellia(128)";
1812 case SSL_CAMELLIA256
:
1813 enc
= "Camellia(256)";
1815 case SSL_ARIA128GCM
:
1816 enc
= "ARIAGCM(128)";
1818 case SSL_ARIA256GCM
:
1819 enc
= "ARIAGCM(256)";
1824 case SSL_eGOST2814789CNT
:
1825 case SSL_eGOST2814789CNT12
:
1826 enc
= "GOST89(256)";
1831 case SSL_KUZNYECHIK
:
1834 case SSL_CHACHA20POLY1305
:
1835 enc
= "CHACHA20/POLY1305(256)";
1859 case SSL_GOST89MAC12
:
1865 case SSL_GOST12_256
:
1866 case SSL_GOST12_512
:
1874 BIO_snprintf(buf
, len
, format
, cipher
->name
, ver
, kx
, au
, enc
, mac
);
1879 const char *SSL_CIPHER_get_version(const SSL_CIPHER
*c
)
1885 * Backwards-compatibility crutch. In almost all contexts we report TLS
1886 * 1.0 as "TLSv1", but for ciphers we report "TLSv1.0".
1888 if (c
->min_tls
== TLS1_VERSION
)
1890 return ssl_protocol_to_string(c
->min_tls
);
1893 /* return the actual cipher being used */
1894 const char *SSL_CIPHER_get_name(const SSL_CIPHER
*c
)
1901 /* return the actual cipher being used in RFC standard name */
1902 const char *SSL_CIPHER_standard_name(const SSL_CIPHER
*c
)
1909 /* return the OpenSSL name based on given RFC standard name */
1910 const char *OPENSSL_cipher_name(const char *stdname
)
1912 const SSL_CIPHER
*c
;
1914 if (stdname
== NULL
)
1916 c
= ssl3_get_cipher_by_std_name(stdname
);
1917 return SSL_CIPHER_get_name(c
);
1920 /* number of bits for symmetric cipher */
1921 int SSL_CIPHER_get_bits(const SSL_CIPHER
*c
, int *alg_bits
)
1926 if (alg_bits
!= NULL
)
1927 *alg_bits
= (int)c
->alg_bits
;
1928 ret
= (int)c
->strength_bits
;
1933 uint32_t SSL_CIPHER_get_id(const SSL_CIPHER
*c
)
1938 uint16_t SSL_CIPHER_get_protocol_id(const SSL_CIPHER
*c
)
1940 return c
->id
& 0xFFFF;
1943 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
)
1948 if ((n
== 0) || (sk
== NULL
))
1950 nn
= sk_SSL_COMP_num(sk
);
1951 for (i
= 0; i
< nn
; i
++) {
1952 ctmp
= sk_SSL_COMP_value(sk
, i
);
1959 #ifdef OPENSSL_NO_COMP
1960 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1965 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1971 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1977 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1979 load_builtin_compressions();
1980 return ssl_comp_methods
;
1983 STACK_OF(SSL_COMP
) *SSL_COMP_set0_compression_methods(STACK_OF(SSL_COMP
)
1986 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1987 ssl_comp_methods
= meths
;
1991 static void cmeth_free(SSL_COMP
*cm
)
1996 void ssl_comp_free_compression_methods_int(void)
1998 STACK_OF(SSL_COMP
) *old_meths
= ssl_comp_methods
;
1999 ssl_comp_methods
= NULL
;
2000 sk_SSL_COMP_pop_free(old_meths
, cmeth_free
);
2003 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
2007 if (cm
== NULL
|| COMP_get_type(cm
) == NID_undef
)
2011 * According to draft-ietf-tls-compression-04.txt, the
2012 * compression number ranges should be the following:
2014 * 0 to 63: methods defined by the IETF
2015 * 64 to 192: external party methods assigned by IANA
2016 * 193 to 255: reserved for private use
2018 if (id
< 193 || id
> 255) {
2019 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,
2020 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE
);
2024 comp
= OPENSSL_malloc(sizeof(*comp
));
2026 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
, ERR_R_MALLOC_FAILURE
);
2032 load_builtin_compressions();
2033 if (ssl_comp_methods
&& sk_SSL_COMP_find(ssl_comp_methods
, comp
) >= 0) {
2035 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,
2036 SSL_R_DUPLICATE_COMPRESSION_ID
);
2039 if (ssl_comp_methods
== NULL
|| !sk_SSL_COMP_push(ssl_comp_methods
, comp
)) {
2041 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
, ERR_R_MALLOC_FAILURE
);
2048 const char *SSL_COMP_get_name(const COMP_METHOD
*comp
)
2050 #ifndef OPENSSL_NO_COMP
2051 return comp
? COMP_get_name(comp
) : NULL
;
2057 const char *SSL_COMP_get0_name(const SSL_COMP
*comp
)
2059 #ifndef OPENSSL_NO_COMP
2066 int SSL_COMP_get_id(const SSL_COMP
*comp
)
2068 #ifndef OPENSSL_NO_COMP
2075 const SSL_CIPHER
*ssl_get_cipher_by_char(SSL
*ssl
, const unsigned char *ptr
,
2078 const SSL_CIPHER
*c
= ssl
->method
->get_cipher_by_char(ptr
);
2080 if (c
== NULL
|| (!all
&& c
->valid
== 0))
2085 const SSL_CIPHER
*SSL_CIPHER_find(SSL
*ssl
, const unsigned char *ptr
)
2087 return ssl
->method
->get_cipher_by_char(ptr
);
2090 int SSL_CIPHER_get_cipher_nid(const SSL_CIPHER
*c
)
2095 i
= ssl_cipher_info_lookup(ssl_cipher_table_cipher
, c
->algorithm_enc
);
2098 return ssl_cipher_table_cipher
[i
].nid
;
2101 int SSL_CIPHER_get_digest_nid(const SSL_CIPHER
*c
)
2103 int i
= ssl_cipher_info_lookup(ssl_cipher_table_mac
, c
->algorithm_mac
);
2107 return ssl_cipher_table_mac
[i
].nid
;
2110 int SSL_CIPHER_get_kx_nid(const SSL_CIPHER
*c
)
2112 int i
= ssl_cipher_info_lookup(ssl_cipher_table_kx
, c
->algorithm_mkey
);
2116 return ssl_cipher_table_kx
[i
].nid
;
2119 int SSL_CIPHER_get_auth_nid(const SSL_CIPHER
*c
)
2121 int i
= ssl_cipher_info_lookup(ssl_cipher_table_auth
, c
->algorithm_auth
);
2125 return ssl_cipher_table_auth
[i
].nid
;
2128 const EVP_MD
*SSL_CIPHER_get_handshake_digest(const SSL_CIPHER
*c
)
2130 int idx
= c
->algorithm2
& SSL_HANDSHAKE_MAC_MASK
;
2132 if (idx
< 0 || idx
>= SSL_MD_NUM_IDX
)
2134 return EVP_get_digestbynid(ssl_cipher_table_mac
[idx
].nid
);
2137 int SSL_CIPHER_is_aead(const SSL_CIPHER
*c
)
2139 return (c
->algorithm_mac
& SSL_AEAD
) ? 1 : 0;
2142 int ssl_cipher_get_overhead(const SSL_CIPHER
*c
, size_t *mac_overhead
,
2143 size_t *int_overhead
, size_t *blocksize
,
2144 size_t *ext_overhead
)
2146 size_t mac
= 0, in
= 0, blk
= 0, out
= 0;
2148 /* Some hard-coded numbers for the CCM/Poly1305 MAC overhead
2149 * because there are no handy #defines for those. */
2150 if (c
->algorithm_enc
& (SSL_AESGCM
| SSL_ARIAGCM
)) {
2151 out
= EVP_GCM_TLS_EXPLICIT_IV_LEN
+ EVP_GCM_TLS_TAG_LEN
;
2152 } else if (c
->algorithm_enc
& (SSL_AES128CCM
| SSL_AES256CCM
)) {
2153 out
= EVP_CCM_TLS_EXPLICIT_IV_LEN
+ 16;
2154 } else if (c
->algorithm_enc
& (SSL_AES128CCM8
| SSL_AES256CCM8
)) {
2155 out
= EVP_CCM_TLS_EXPLICIT_IV_LEN
+ 8;
2156 } else if (c
->algorithm_enc
& SSL_CHACHA20POLY1305
) {
2158 } else if (c
->algorithm_mac
& SSL_AEAD
) {
2159 /* We're supposed to have handled all the AEAD modes above */
2162 /* Non-AEAD modes. Calculate MAC/cipher overhead separately */
2163 int digest_nid
= SSL_CIPHER_get_digest_nid(c
);
2164 const EVP_MD
*e_md
= EVP_get_digestbynid(digest_nid
);
2169 mac
= EVP_MD_size(e_md
);
2170 if (c
->algorithm_enc
!= SSL_eNULL
) {
2171 int cipher_nid
= SSL_CIPHER_get_cipher_nid(c
);
2172 const EVP_CIPHER
*e_ciph
= EVP_get_cipherbynid(cipher_nid
);
2174 /* If it wasn't AEAD or SSL_eNULL, we expect it to be a
2175 known CBC cipher. */
2176 if (e_ciph
== NULL
||
2177 EVP_CIPHER_mode(e_ciph
) != EVP_CIPH_CBC_MODE
)
2180 in
= 1; /* padding length byte */
2181 out
= EVP_CIPHER_iv_length(e_ciph
);
2182 blk
= EVP_CIPHER_block_size(e_ciph
);
2186 *mac_overhead
= mac
;
2189 *ext_overhead
= out
;
2194 int ssl_cert_is_disabled(size_t idx
)
2196 const SSL_CERT_LOOKUP
*cl
= ssl_cert_lookup_by_idx(idx
);
2198 if (cl
== NULL
|| (cl
->amask
& disabled_auth_mask
) != 0)
2204 * Default list of TLSv1.2 (and earlier) ciphers
2205 * SSL_DEFAULT_CIPHER_LIST deprecated in 3.0.0
2206 * Update both macro and function simultaneously
2208 const char *OSSL_default_cipher_list(void)
2210 return "ALL:!COMPLEMENTOFDEFAULT:!eNULL";
2214 * Default list of TLSv1.3 (and later) ciphers
2215 * TLS_DEFAULT_CIPHERSUITES deprecated in 3.0.0
2216 * Update both macro and function simultaneously
2218 const char *OSSL_default_ciphersuites(void)
2220 return "TLS_AES_256_GCM_SHA384:"
2221 #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
2222 "TLS_CHACHA20_POLY1305_SHA256:"
2224 "TLS_AES_128_GCM_SHA256";