2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
117 #include <openssl/objects.h>
118 #ifndef OPENSSL_NO_COMP
119 #include <openssl/comp.h>
122 #include "ssl_locl.h"
124 #define SSL_ENC_DES_IDX 0
125 #define SSL_ENC_3DES_IDX 1
126 #define SSL_ENC_RC4_IDX 2
127 #define SSL_ENC_RC2_IDX 3
128 #define SSL_ENC_IDEA_IDX 4
129 #define SSL_ENC_eFZA_IDX 5
130 #define SSL_ENC_NULL_IDX 6
131 #define SSL_ENC_AES128_IDX 7
132 #define SSL_ENC_AES256_IDX 8
133 #define SSL_ENC_CAMELLIA128_IDX 9
134 #define SSL_ENC_CAMELLIA256_IDX 10
135 #define SSL_ENC_SEED_IDX 11
136 #define SSL_ENC_NUM_IDX 12
139 static const EVP_CIPHER
*ssl_cipher_methods
[SSL_ENC_NUM_IDX
]={
140 NULL
,NULL
,NULL
,NULL
,NULL
,NULL
,
143 #define SSL_COMP_NULL_IDX 0
144 #define SSL_COMP_ZLIB_IDX 1
145 #define SSL_COMP_NUM_IDX 2
147 static STACK_OF(SSL_COMP
) *ssl_comp_methods
=NULL
;
149 #define SSL_MD_MD5_IDX 0
150 #define SSL_MD_SHA1_IDX 1
151 #define SSL_MD_NUM_IDX 2
152 static const EVP_MD
*ssl_digest_methods
[SSL_MD_NUM_IDX
]={
157 #define CIPHER_KILL 2
160 #define CIPHER_SPECIAL 5
162 typedef struct cipher_order_st
167 struct cipher_order_st
*next
,*prev
;
170 static const SSL_CIPHER cipher_aliases
[]={
171 /* Don't include eNULL unless specifically enabled. */
172 /* Don't include ECC in ALL because these ciphers are not yet official. */
173 {0,SSL_TXT_ALL
, 0,SSL_ALL
& ~SSL_eNULL
& ~SSL_kECDH
& ~SSL_kECDHE
, SSL_ALL
,0,0,0,SSL_ALL
,SSL_ALL
}, /* must be first */
174 /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */
175 {0,SSL_TXT_CMPALL
,0,SSL_eNULL
,0,0,0,0,SSL_ENC_MASK
,0}, /* COMPLEMENT OF ALL */
176 {0,SSL_TXT_CMPDEF
,0,SSL_ADH
, 0,0,0,0,SSL_AUTH_MASK
,0},
177 {0,SSL_TXT_kKRB5
,0,SSL_kKRB5
,0,0,0,0,SSL_MKEY_MASK
,0}, /* VRS Kerberos5 */
178 {0,SSL_TXT_kRSA
,0,SSL_kRSA
, 0,0,0,0,SSL_MKEY_MASK
,0},
179 {0,SSL_TXT_kDHr
,0,SSL_kDHr
, 0,0,0,0,SSL_MKEY_MASK
,0},
180 {0,SSL_TXT_kDHd
,0,SSL_kDHd
, 0,0,0,0,SSL_MKEY_MASK
,0},
181 {0,SSL_TXT_kEDH
,0,SSL_kEDH
, 0,0,0,0,SSL_MKEY_MASK
,0},
182 {0,SSL_TXT_kFZA
,0,SSL_kFZA
, 0,0,0,0,SSL_MKEY_MASK
,0},
183 {0,SSL_TXT_DH
, 0,SSL_DH
, 0,0,0,0,SSL_MKEY_MASK
,0},
184 {0,SSL_TXT_ECC
, 0,(SSL_kECDH
|SSL_kECDHE
), 0,0,0,0,SSL_MKEY_MASK
,0},
185 {0,SSL_TXT_EDH
, 0,SSL_EDH
, 0,0,0,0,SSL_MKEY_MASK
|SSL_AUTH_MASK
,0},
186 {0,SSL_TXT_aKRB5
,0,SSL_aKRB5
,0,0,0,0,SSL_AUTH_MASK
,0}, /* VRS Kerberos5 */
187 {0,SSL_TXT_aRSA
,0,SSL_aRSA
, 0,0,0,0,SSL_AUTH_MASK
,0},
188 {0,SSL_TXT_aDSS
,0,SSL_aDSS
, 0,0,0,0,SSL_AUTH_MASK
,0},
189 {0,SSL_TXT_aFZA
,0,SSL_aFZA
, 0,0,0,0,SSL_AUTH_MASK
,0},
190 {0,SSL_TXT_aNULL
,0,SSL_aNULL
,0,0,0,0,SSL_AUTH_MASK
,0},
191 {0,SSL_TXT_aDH
, 0,SSL_aDH
, 0,0,0,0,SSL_AUTH_MASK
,0},
192 {0,SSL_TXT_DSS
, 0,SSL_DSS
, 0,0,0,0,SSL_AUTH_MASK
,0},
194 {0,SSL_TXT_DES
, 0,SSL_DES
, 0,0,0,0,SSL_ENC_MASK
,0},
195 {0,SSL_TXT_3DES
,0,SSL_3DES
, 0,0,0,0,SSL_ENC_MASK
,0},
196 {0,SSL_TXT_RC4
, 0,SSL_RC4
, 0,0,0,0,SSL_ENC_MASK
,0},
197 {0,SSL_TXT_RC2
, 0,SSL_RC2
, 0,0,0,0,SSL_ENC_MASK
,0},
198 #ifndef OPENSSL_NO_IDEA
199 {0,SSL_TXT_IDEA
,0,SSL_IDEA
, 0,0,0,0,SSL_ENC_MASK
,0},
201 {0,SSL_TXT_SEED
,0,SSL_SEED
, 0,0,0,0,SSL_ENC_MASK
,0},
202 {0,SSL_TXT_eNULL
,0,SSL_eNULL
,0,0,0,0,SSL_ENC_MASK
,0},
203 {0,SSL_TXT_eFZA
,0,SSL_eFZA
, 0,0,0,0,SSL_ENC_MASK
,0},
204 {0,SSL_TXT_AES
, 0,SSL_AES
, 0,0,0,0,SSL_ENC_MASK
,0},
205 {0,SSL_TXT_CAMELLIA
,0,SSL_CAMELLIA
, 0,0,0,0,SSL_ENC_MASK
,0},
207 {0,SSL_TXT_MD5
, 0,SSL_MD5
, 0,0,0,0,SSL_MAC_MASK
,0},
208 {0,SSL_TXT_SHA1
,0,SSL_SHA1
, 0,0,0,0,SSL_MAC_MASK
,0},
209 {0,SSL_TXT_SHA
, 0,SSL_SHA
, 0,0,0,0,SSL_MAC_MASK
,0},
211 {0,SSL_TXT_NULL
,0,SSL_NULL
, 0,0,0,0,SSL_ENC_MASK
,0},
212 {0,SSL_TXT_KRB5
,0,SSL_KRB5
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
,0},
213 {0,SSL_TXT_RSA
, 0,SSL_RSA
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
,0},
214 {0,SSL_TXT_ADH
, 0,SSL_ADH
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
,0},
215 {0,SSL_TXT_FZA
, 0,SSL_FZA
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
|SSL_ENC_MASK
,0},
217 {0,SSL_TXT_SSLV2
, 0,SSL_SSLV2
, 0,0,0,0,SSL_SSL_MASK
,0},
218 {0,SSL_TXT_SSLV3
, 0,SSL_SSLV3
, 0,0,0,0,SSL_SSL_MASK
,0},
219 {0,SSL_TXT_TLSV1
, 0,SSL_TLSV1
, 0,0,0,0,SSL_SSL_MASK
,0},
221 {0,SSL_TXT_EXP
,0, 0,SSL_EXPORT
, 0,0,0,0,SSL_EXP_MASK
},
222 {0,SSL_TXT_EXPORT
,0, 0,SSL_EXPORT
, 0,0,0,0,SSL_EXP_MASK
},
223 {0,SSL_TXT_EXP40
, 0, 0, SSL_EXP40
, 0,0,0,0,SSL_STRONG_MASK
},
224 {0,SSL_TXT_EXP56
, 0, 0, SSL_EXP56
, 0,0,0,0,SSL_STRONG_MASK
},
225 {0,SSL_TXT_LOW
, 0, 0, SSL_LOW
, 0,0,0,0,SSL_STRONG_MASK
},
226 {0,SSL_TXT_MEDIUM
,0, 0,SSL_MEDIUM
, 0,0,0,0,SSL_STRONG_MASK
},
227 {0,SSL_TXT_HIGH
, 0, 0, SSL_HIGH
, 0,0,0,0,SSL_STRONG_MASK
},
228 {0,SSL_TXT_FIPS
, 0, 0, SSL_FIPS
, 0,0,0,0,SSL_FIPS
|SSL_STRONG_NONE
},
231 void ssl_load_ciphers(void)
233 ssl_cipher_methods
[SSL_ENC_DES_IDX
]=
234 EVP_get_cipherbyname(SN_des_cbc
);
235 ssl_cipher_methods
[SSL_ENC_3DES_IDX
]=
236 EVP_get_cipherbyname(SN_des_ede3_cbc
);
237 ssl_cipher_methods
[SSL_ENC_RC4_IDX
]=
238 EVP_get_cipherbyname(SN_rc4
);
239 ssl_cipher_methods
[SSL_ENC_RC2_IDX
]=
240 EVP_get_cipherbyname(SN_rc2_cbc
);
241 #ifndef OPENSSL_NO_IDEA
242 ssl_cipher_methods
[SSL_ENC_IDEA_IDX
]=
243 EVP_get_cipherbyname(SN_idea_cbc
);
245 ssl_cipher_methods
[SSL_ENC_IDEA_IDX
]= NULL
;
247 ssl_cipher_methods
[SSL_ENC_AES128_IDX
]=
248 EVP_get_cipherbyname(SN_aes_128_cbc
);
249 ssl_cipher_methods
[SSL_ENC_AES256_IDX
]=
250 EVP_get_cipherbyname(SN_aes_256_cbc
);
251 ssl_cipher_methods
[SSL_ENC_CAMELLIA128_IDX
]=
252 EVP_get_cipherbyname(SN_camellia_128_cbc
);
253 ssl_cipher_methods
[SSL_ENC_CAMELLIA256_IDX
]=
254 EVP_get_cipherbyname(SN_camellia_256_cbc
);
255 ssl_cipher_methods
[SSL_ENC_SEED_IDX
]=
256 EVP_get_cipherbyname(SN_seed_cbc
);
258 ssl_digest_methods
[SSL_MD_MD5_IDX
]=
259 EVP_get_digestbyname(SN_md5
);
260 ssl_digest_methods
[SSL_MD_SHA1_IDX
]=
261 EVP_get_digestbyname(SN_sha1
);
265 #ifndef OPENSSL_NO_COMP
267 static int sk_comp_cmp(const SSL_COMP
* const *a
,
268 const SSL_COMP
* const *b
)
270 return((*a
)->id
-(*b
)->id
);
273 static void load_builtin_compressions(void)
275 int got_write_lock
= 0;
277 CRYPTO_r_lock(CRYPTO_LOCK_SSL
);
278 if (ssl_comp_methods
== NULL
)
280 CRYPTO_r_unlock(CRYPTO_LOCK_SSL
);
281 CRYPTO_w_lock(CRYPTO_LOCK_SSL
);
284 if (ssl_comp_methods
== NULL
)
286 SSL_COMP
*comp
= NULL
;
289 ssl_comp_methods
=sk_SSL_COMP_new(sk_comp_cmp
);
290 if (ssl_comp_methods
!= NULL
)
292 comp
=(SSL_COMP
*)OPENSSL_malloc(sizeof(SSL_COMP
));
295 comp
->method
=COMP_zlib();
297 && comp
->method
->type
== NID_undef
)
301 comp
->id
=SSL_COMP_ZLIB_IDX
;
302 comp
->name
=comp
->method
->name
;
303 sk_SSL_COMP_push(ssl_comp_methods
,comp
);
306 sk_SSL_COMP_sort(ssl_comp_methods
);
313 CRYPTO_w_unlock(CRYPTO_LOCK_SSL
);
315 CRYPTO_r_unlock(CRYPTO_LOCK_SSL
);
319 int ssl_cipher_get_evp(const SSL_SESSION
*s
, const EVP_CIPHER
**enc
,
320 const EVP_MD
**md
, SSL_COMP
**comp
)
326 if (c
== NULL
) return(0);
330 #ifndef OPENSSL_NO_COMP
331 load_builtin_compressions();
335 ctmp
.id
=s
->compress_meth
;
336 if (ssl_comp_methods
!= NULL
)
338 i
=sk_SSL_COMP_find(ssl_comp_methods
,&ctmp
);
340 *comp
=sk_SSL_COMP_value(ssl_comp_methods
,i
);
346 if ((enc
== NULL
) || (md
== NULL
)) return(0);
348 switch (c
->algorithms
& SSL_ENC_MASK
)
371 case 128: i
=SSL_ENC_AES128_IDX
; break;
372 case 256: i
=SSL_ENC_AES256_IDX
; break;
373 default: i
=-1; break;
379 case 128: i
=SSL_ENC_CAMELLIA128_IDX
; break;
380 case 256: i
=SSL_ENC_CAMELLIA256_IDX
; break;
381 default: i
=-1; break;
393 if ((i
< 0) || (i
>= SSL_ENC_NUM_IDX
))
397 if (i
== SSL_ENC_NULL_IDX
)
400 *enc
=ssl_cipher_methods
[i
];
403 switch (c
->algorithms
& SSL_MAC_MASK
)
415 if ((i
< 0) || (i
>= SSL_MD_NUM_IDX
))
418 *md
=ssl_digest_methods
[i
];
420 if ((*enc
!= NULL
) && (*md
!= NULL
))
426 #define ITEM_SEP(a) \
427 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
429 static void ll_append_tail(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
432 if (curr
== *tail
) return;
435 if (curr
->prev
!= NULL
)
436 curr
->prev
->next
=curr
->next
;
437 if (curr
->next
!= NULL
) /* should always be true */
438 curr
->next
->prev
=curr
->prev
;
445 struct disabled_masks
{ /* This is a kludge no longer needed with OpenSSL 0.9.9,
446 * where 128-bit and 256-bit algorithms simply will get
448 unsigned long mask
; /* everything except m256 */
449 unsigned long m256
; /* applies to 256-bit algorithms only */
452 static struct disabled_masks
ssl_cipher_get_disabled(void)
456 struct disabled_masks ret
;
459 #ifdef OPENSSL_NO_RSA
460 mask
|= SSL_aRSA
|SSL_kRSA
;
462 #ifdef OPENSSL_NO_DSA
466 mask
|= SSL_kDHr
|SSL_kDHd
|SSL_kEDH
|SSL_aDH
;
468 #ifdef OPENSSL_NO_KRB5
469 mask
|= SSL_kKRB5
|SSL_aKRB5
;
471 #ifdef OPENSSL_NO_ECDH
472 mask
|= SSL_kECDH
|SSL_kECDHE
;
474 #ifdef SSL_FORBID_ENULL
478 mask
|= (ssl_cipher_methods
[SSL_ENC_DES_IDX
] == NULL
) ? SSL_DES
:0;
479 mask
|= (ssl_cipher_methods
[SSL_ENC_3DES_IDX
] == NULL
) ? SSL_3DES
:0;
480 mask
|= (ssl_cipher_methods
[SSL_ENC_RC4_IDX
] == NULL
) ? SSL_RC4
:0;
481 mask
|= (ssl_cipher_methods
[SSL_ENC_RC2_IDX
] == NULL
) ? SSL_RC2
:0;
482 mask
|= (ssl_cipher_methods
[SSL_ENC_IDEA_IDX
] == NULL
) ? SSL_IDEA
:0;
483 mask
|= (ssl_cipher_methods
[SSL_ENC_eFZA_IDX
] == NULL
) ? SSL_eFZA
:0;
484 mask
|= (ssl_cipher_methods
[SSL_ENC_SEED_IDX
] == NULL
) ? SSL_SEED
:0;
486 mask
|= (ssl_digest_methods
[SSL_MD_MD5_IDX
] == NULL
) ? SSL_MD5
:0;
487 mask
|= (ssl_digest_methods
[SSL_MD_SHA1_IDX
] == NULL
) ? SSL_SHA1
:0;
489 /* finally consider algorithms where mask and m256 differ */
491 mask
|= (ssl_cipher_methods
[SSL_ENC_AES128_IDX
] == NULL
) ? SSL_AES
:0;
492 mask
|= (ssl_cipher_methods
[SSL_ENC_CAMELLIA128_IDX
] == NULL
) ? SSL_CAMELLIA
:0;
493 m256
|= (ssl_cipher_methods
[SSL_ENC_AES256_IDX
] == NULL
) ? SSL_AES
:0;
494 m256
|= (ssl_cipher_methods
[SSL_ENC_CAMELLIA256_IDX
] == NULL
) ? SSL_CAMELLIA
:0;
501 static void ssl_cipher_collect_ciphers(const SSL_METHOD
*ssl_method
,
502 int num_of_ciphers
, unsigned long mask
, unsigned long m256
,
503 CIPHER_ORDER
*co_list
, CIPHER_ORDER
**head_p
,
504 CIPHER_ORDER
**tail_p
)
510 * We have num_of_ciphers descriptions compiled in, depending on the
511 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
512 * These will later be sorted in a linked list with at most num
516 /* Get the initial list of ciphers */
517 co_list_num
= 0; /* actual count of ciphers */
518 for (i
= 0; i
< num_of_ciphers
; i
++)
520 c
= ssl_method
->get_cipher(i
);
521 #define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask))
522 /* drop those that use any of that is not available */
524 if ((c
!= NULL
) && c
->valid
&& !IS_MASKED(c
)
525 && (!FIPS_mode() || (c
->algo_strength
& SSL_FIPS
)))
527 if ((c
!= NULL
) && c
->valid
&& !IS_MASKED(c
))
530 co_list
[co_list_num
].cipher
= c
;
531 co_list
[co_list_num
].next
= NULL
;
532 co_list
[co_list_num
].prev
= NULL
;
533 co_list
[co_list_num
].active
= 0;
536 printf("\t%d: %s %lx %lx\n",i
,c
->name
,c
->id
,c
->algorithms
);
537 #endif /* KSSL_DEBUG */
539 if (!sk_push(ca_list,(char *)c)) goto err;
545 * Prepare linked list from list entries
547 for (i
= 1; i
< co_list_num
- 1; i
++)
549 co_list
[i
].prev
= &(co_list
[i
-1]);
550 co_list
[i
].next
= &(co_list
[i
+1]);
554 (*head_p
) = &(co_list
[0]);
555 (*head_p
)->prev
= NULL
;
556 (*head_p
)->next
= &(co_list
[1]);
557 (*tail_p
) = &(co_list
[co_list_num
- 1]);
558 (*tail_p
)->prev
= &(co_list
[co_list_num
- 2]);
559 (*tail_p
)->next
= NULL
;
563 static void ssl_cipher_collect_aliases(SSL_CIPHER
**ca_list
,
564 int num_of_group_aliases
, unsigned long mask
,
567 CIPHER_ORDER
*ciph_curr
;
568 SSL_CIPHER
**ca_curr
;
572 * First, add the real ciphers as already collected
576 while (ciph_curr
!= NULL
)
578 *ca_curr
= ciph_curr
->cipher
;
580 ciph_curr
= ciph_curr
->next
;
584 * Now we add the available ones from the cipher_aliases[] table.
585 * They represent either an algorithm, that must be fully
586 * supported (not match any bit in mask) or represent a cipher
587 * strength value (will be added in any case because algorithms=0).
589 for (i
= 0; i
< num_of_group_aliases
; i
++)
591 if ((i
== 0) || /* always fetch "ALL" */
592 !(cipher_aliases
[i
].algorithms
& mask
))
594 *ca_curr
= (SSL_CIPHER
*)(cipher_aliases
+ i
);
599 *ca_curr
= NULL
; /* end of list */
602 static void ssl_cipher_apply_rule(unsigned long cipher_id
, unsigned long ssl_version
,
603 unsigned long algorithms
, unsigned long mask
,
604 unsigned long algo_strength
, unsigned long mask_strength
,
605 int rule
, int strength_bits
, CIPHER_ORDER
*co_list
,
606 CIPHER_ORDER
**head_p
, CIPHER_ORDER
**tail_p
)
608 CIPHER_ORDER
*head
, *tail
, *curr
, *curr2
, *tail2
;
610 unsigned long ma
, ma_s
;
613 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n",
614 rule
, algorithms
, mask
, algo_strength
, mask_strength
,
618 curr
= head
= *head_p
;
620 tail2
= tail
= *tail_p
;
623 if ((curr
== NULL
) || (curr
== tail2
)) break;
629 /* If explicit cipher suite, match only that one for its own protocol version.
630 * Usual selection criteria will be used for similar ciphersuites from other version! */
632 if (cipher_id
&& (cp
->algorithms
& SSL_SSL_MASK
) == ssl_version
)
634 if (cp
->id
!= cipher_id
)
639 * Selection criteria is either the number of strength_bits
640 * or the algorithm used.
642 else if (strength_bits
== -1)
644 ma
= mask
& cp
->algorithms
;
645 ma_s
= mask_strength
& cp
->algo_strength
;
648 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp
->name
, cp
->algorithms
, cp
->algo_strength
, mask
, mask_strength
);
649 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma
, ma_s
, ma
&algorithms
, ma_s
&algo_strength
);
652 * Select: if none of the mask bit was met from the
653 * cipher or not all of the bits were met, the
654 * selection does not apply.
656 if (((ma
== 0) && (ma_s
== 0)) ||
657 ((ma
& algorithms
) != ma
) ||
658 ((ma_s
& algo_strength
) != ma_s
))
659 continue; /* does not apply */
661 else if (strength_bits
!= cp
->strength_bits
)
662 continue; /* does not apply */
665 printf("Action = %d\n", rule
);
668 /* add the cipher if it has not been added yet. */
669 if (rule
== CIPHER_ADD
)
673 int add_this_cipher
= 1;
675 if (((cp
->algorithms
& (SSL_kECDHE
|SSL_kECDH
|SSL_aECDSA
)) != 0))
677 /* Make sure "ECCdraft" ciphersuites are activated only if
678 * *explicitly* requested, but not implicitly (such as
679 * as part of the "AES" alias). */
681 add_this_cipher
= (mask
& (SSL_kECDHE
|SSL_kECDH
|SSL_aECDSA
)) != 0 || cipher_id
!= 0;
686 ll_append_tail(&head
, curr
, &tail
);
691 /* Move the added cipher to this location */
692 else if (rule
== CIPHER_ORD
)
696 ll_append_tail(&head
, curr
, &tail
);
699 else if (rule
== CIPHER_DEL
)
701 else if (rule
== CIPHER_KILL
)
706 curr
->prev
->next
= curr
->next
;
710 if (curr
->next
!= NULL
)
711 curr
->next
->prev
= curr
->prev
;
712 if (curr
->prev
!= NULL
)
713 curr
->prev
->next
= curr
->next
;
723 static int ssl_cipher_strength_sort(CIPHER_ORDER
*co_list
,
724 CIPHER_ORDER
**head_p
,
725 CIPHER_ORDER
**tail_p
)
727 int max_strength_bits
, i
, *number_uses
;
731 * This routine sorts the ciphers with descending strength. The sorting
732 * must keep the pre-sorted sequence, so we apply the normal sorting
733 * routine as '+' movement to the end of the list.
735 max_strength_bits
= 0;
740 (curr
->cipher
->strength_bits
> max_strength_bits
))
741 max_strength_bits
= curr
->cipher
->strength_bits
;
745 number_uses
= OPENSSL_malloc((max_strength_bits
+ 1) * sizeof(int));
748 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT
,ERR_R_MALLOC_FAILURE
);
751 memset(number_uses
, 0, (max_strength_bits
+ 1) * sizeof(int));
754 * Now find the strength_bits values actually used
760 number_uses
[curr
->cipher
->strength_bits
]++;
764 * Go through the list of used strength_bits values in descending
767 for (i
= max_strength_bits
; i
>= 0; i
--)
768 if (number_uses
[i
] > 0)
769 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD
, i
,
770 co_list
, head_p
, tail_p
);
772 OPENSSL_free(number_uses
);
776 static int ssl_cipher_process_rulestr(const char *rule_str
,
777 CIPHER_ORDER
*co_list
, CIPHER_ORDER
**head_p
,
778 CIPHER_ORDER
**tail_p
, SSL_CIPHER
**ca_list
)
780 unsigned long algorithms
, mask
, algo_strength
, mask_strength
;
782 int j
, multi
, found
, rule
, retval
, ok
, buflen
;
783 unsigned long cipher_id
= 0, ssl_version
= 0;
795 { rule
= CIPHER_DEL
; l
++; }
797 { rule
= CIPHER_ORD
; l
++; }
799 { rule
= CIPHER_KILL
; l
++; }
801 { rule
= CIPHER_SPECIAL
; l
++; }
803 { rule
= CIPHER_ADD
; }
811 algorithms
= mask
= algo_strength
= mask_strength
= 0;
818 #ifndef CHARSET_EBCDIC
819 while ( ((ch
>= 'A') && (ch
<= 'Z')) ||
820 ((ch
>= '0') && (ch
<= '9')) ||
821 ((ch
>= 'a') && (ch
<= 'z')) ||
824 while ( isalnum(ch
) || (ch
== '-'))
834 * We hit something we cannot deal with,
835 * it is no command or separator nor
836 * alphanumeric, so we call this an error.
838 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
839 SSL_R_INVALID_COMMAND
);
845 if (rule
== CIPHER_SPECIAL
)
847 found
= 0; /* unused -- avoid compiler warning */
848 break; /* special treatment */
851 /* check for multi-part specification */
861 * Now search for the cipher alias in the ca_list. Be careful
862 * with the strncmp, because the "buflen" limitation
863 * will make the rule "ADH:SOME" and the cipher
864 * "ADH-MY-CIPHER" look like a match for buflen=3.
865 * So additionally check whether the cipher name found
866 * has the correct length. We can save a strlen() call:
867 * just checking for the '\0' at the right place is
868 * sufficient, we have to strncmp() anyway. (We cannot
869 * use strcmp(), because buf is not '\0' terminated.)
876 if (!strncmp(buf
, ca_list
[j
]->name
, buflen
) &&
877 (ca_list
[j
]->name
[buflen
] == '\0'))
886 break; /* ignore this entry */
889 * 1 - any old restrictions apply outside new mask
890 * 2 - any new restrictions apply outside old mask
891 * 3 - enforce old & new where masks intersect
893 algorithms
= (algorithms
& ~ca_list
[j
]->mask
) | /* 1 */
894 (ca_list
[j
]->algorithms
& ~mask
) | /* 2 */
895 (algorithms
& ca_list
[j
]->algorithms
); /* 3 */
896 mask
|= ca_list
[j
]->mask
;
897 algo_strength
= (algo_strength
& ~ca_list
[j
]->mask_strength
) |
898 (ca_list
[j
]->algo_strength
& ~mask_strength
) |
899 (algo_strength
& ca_list
[j
]->algo_strength
);
900 mask_strength
|= ca_list
[j
]->mask_strength
;
902 /* explicit ciphersuite found */
903 if (ca_list
[j
]->valid
)
905 cipher_id
= ca_list
[j
]->id
;
906 ssl_version
= ca_list
[j
]->algorithms
& SSL_SSL_MASK
;
914 * Ok, we have the rule, now apply it
916 if (rule
== CIPHER_SPECIAL
)
917 { /* special command */
920 !strncmp(buf
, "STRENGTH", 8))
921 ok
= ssl_cipher_strength_sort(co_list
,
924 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
925 SSL_R_INVALID_COMMAND
);
929 * We do not support any "multi" options
930 * together with "@", so throw away the
931 * rest of the command, if any left, until
932 * end or ':' is found.
934 while ((*l
!= '\0') && !ITEM_SEP(*l
))
939 ssl_cipher_apply_rule(cipher_id
, ssl_version
, algorithms
, mask
,
940 algo_strength
, mask_strength
, rule
, -1,
941 co_list
, head_p
, tail_p
);
945 while ((*l
!= '\0') && !ITEM_SEP(*l
))
948 if (*l
== '\0') break; /* done */
954 STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*ssl_method
,
955 STACK_OF(SSL_CIPHER
) **cipher_list
,
956 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
957 const char *rule_str
)
959 int ok
, num_of_ciphers
, num_of_alias_max
, num_of_group_aliases
;
960 unsigned long disabled_mask
;
961 unsigned long disabled_m256
;
962 STACK_OF(SSL_CIPHER
) *cipherstack
, *tmp_cipher_list
;
964 CIPHER_ORDER
*co_list
= NULL
, *head
= NULL
, *tail
= NULL
, *curr
;
965 SSL_CIPHER
**ca_list
= NULL
;
968 * Return with error if nothing to do.
970 if (rule_str
== NULL
|| cipher_list
== NULL
|| cipher_list_by_id
== NULL
)
974 * To reduce the work to do we only want to process the compiled
975 * in algorithms, so we first get the mask of disabled ciphers.
978 struct disabled_masks d
;
979 d
= ssl_cipher_get_disabled();
980 disabled_mask
= d
.mask
;
981 disabled_m256
= d
.m256
;
985 * Now we have to collect the available ciphers from the compiled
986 * in ciphers. We cannot get more than the number compiled in, so
987 * it is used for allocation.
989 num_of_ciphers
= ssl_method
->num_ciphers();
991 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers
);
992 #endif /* KSSL_DEBUG */
993 co_list
= (CIPHER_ORDER
*)OPENSSL_malloc(sizeof(CIPHER_ORDER
) * num_of_ciphers
);
996 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
,ERR_R_MALLOC_FAILURE
);
997 return(NULL
); /* Failure */
1000 ssl_cipher_collect_ciphers(ssl_method
, num_of_ciphers
, disabled_mask
,
1001 disabled_m256
, co_list
, &head
, &tail
);
1004 * We also need cipher aliases for selecting based on the rule_str.
1005 * There might be two types of entries in the rule_str: 1) names
1006 * of ciphers themselves 2) aliases for groups of ciphers.
1007 * For 1) we need the available ciphers and for 2) the cipher
1008 * groups of cipher_aliases added together in one list (otherwise
1009 * we would be happy with just the cipher_aliases table).
1011 num_of_group_aliases
= sizeof(cipher_aliases
) / sizeof(SSL_CIPHER
);
1012 num_of_alias_max
= num_of_ciphers
+ num_of_group_aliases
+ 1;
1014 (SSL_CIPHER
**)OPENSSL_malloc(sizeof(SSL_CIPHER
*) * num_of_alias_max
);
1015 if (ca_list
== NULL
)
1017 OPENSSL_free(co_list
);
1018 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
,ERR_R_MALLOC_FAILURE
);
1019 return(NULL
); /* Failure */
1021 ssl_cipher_collect_aliases(ca_list
, num_of_group_aliases
,
1022 (disabled_mask
& disabled_m256
), head
);
1025 * If the rule_string begins with DEFAULT, apply the default rule
1026 * before using the (possibly available) additional rules.
1030 if (strncmp(rule_str
,"DEFAULT",7) == 0)
1032 ok
= ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST
,
1033 co_list
, &head
, &tail
, ca_list
);
1039 if (ok
&& (strlen(rule_p
) > 0))
1040 ok
= ssl_cipher_process_rulestr(rule_p
, co_list
, &head
, &tail
,
1043 OPENSSL_free(ca_list
); /* Not needed anymore */
1046 { /* Rule processing failure */
1047 OPENSSL_free(co_list
);
1051 * Allocate new "cipherstack" for the result, return with error
1052 * if we cannot get one.
1054 if ((cipherstack
= sk_SSL_CIPHER_new_null()) == NULL
)
1056 OPENSSL_free(co_list
);
1061 * The cipher selection for the list is done. The ciphers are added
1062 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1064 for (curr
= head
; curr
!= NULL
; curr
= curr
->next
)
1067 if (curr
->active
&& (!FIPS_mode() || curr
->cipher
->algo_strength
& SSL_FIPS
))
1072 sk_SSL_CIPHER_push(cipherstack
, curr
->cipher
);
1074 printf("<%s>\n",curr
->cipher
->name
);
1078 OPENSSL_free(co_list
); /* Not needed any longer */
1080 tmp_cipher_list
= sk_SSL_CIPHER_dup(cipherstack
);
1081 if (tmp_cipher_list
== NULL
)
1083 sk_SSL_CIPHER_free(cipherstack
);
1086 if (*cipher_list
!= NULL
)
1087 sk_SSL_CIPHER_free(*cipher_list
);
1088 *cipher_list
= cipherstack
;
1089 if (*cipher_list_by_id
!= NULL
)
1090 sk_SSL_CIPHER_free(*cipher_list_by_id
);
1091 *cipher_list_by_id
= tmp_cipher_list
;
1092 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id
,ssl_cipher_ptr_id_cmp
);
1094 sk_SSL_CIPHER_sort(*cipher_list_by_id
);
1095 return(cipherstack
);
1098 char *SSL_CIPHER_description(const SSL_CIPHER
*cipher
, char *buf
, int len
)
1100 int is_export
,pkl
,kl
;
1101 const char *ver
,*exp_str
;
1102 const char *kx
,*au
,*enc
,*mac
;
1103 unsigned long alg
,alg2
;
1105 static const char *format
="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n";
1107 static const char *format
="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1108 #endif /* KSSL_DEBUG */
1110 alg
=cipher
->algorithms
;
1111 alg2
=cipher
->algorithm2
;
1113 is_export
=SSL_C_IS_EXPORT(cipher
);
1114 pkl
=SSL_C_EXPORT_PKEYLENGTH(cipher
);
1115 kl
=SSL_C_EXPORT_KEYLENGTH(cipher
);
1116 exp_str
=is_export
?" export":"";
1118 if (alg
& SSL_SSLV2
)
1120 else if (alg
& SSL_SSLV3
)
1125 switch (alg
&SSL_MKEY_MASK
)
1128 kx
=is_export
?(pkl
== 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1136 case SSL_kKRB5
: /* VRS */
1137 case SSL_KRB5
: /* VRS */
1144 kx
=is_export
?(pkl
== 512 ? "DH(512)" : "DH(1024)"):"DH";
1148 kx
=is_export
?"ECDH(<=163)":"ECDH";
1154 switch (alg
&SSL_AUTH_MASK
)
1165 case SSL_aKRB5
: /* VRS */
1166 case SSL_KRB5
: /* VRS */
1181 switch (alg
&SSL_ENC_MASK
)
1184 enc
=(is_export
&& kl
== 5)?"DES(40)":"DES(56)";
1190 enc
=is_export
?(kl
== 5 ? "RC4(40)" : "RC4(56)")
1191 :((alg2
&SSL2_CF_8_BYTE_ENC
)?"RC4(64)":"RC4(128)");
1194 enc
=is_export
?(kl
== 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1206 switch(cipher
->strength_bits
)
1208 case 128: enc
="AES(128)"; break;
1209 case 192: enc
="AES(192)"; break;
1210 case 256: enc
="AES(256)"; break;
1211 default: enc
="AES(?""?""?)"; break;
1215 switch(cipher
->strength_bits
)
1217 case 128: enc
="Camellia(128)"; break;
1218 case 256: enc
="Camellia(256)"; break;
1219 default: enc
="Camellia(?""?""?)"; break;
1231 switch (alg
&SSL_MAC_MASK
)
1247 buf
=OPENSSL_malloc(len
);
1248 if (buf
== NULL
) return("OPENSSL_malloc Error");
1251 return("Buffer too small");
1254 BIO_snprintf(buf
,len
,format
,cipher
->name
,ver
,kx
,au
,enc
,mac
,exp_str
,alg
);
1256 BIO_snprintf(buf
,len
,format
,cipher
->name
,ver
,kx
,au
,enc
,mac
,exp_str
);
1257 #endif /* KSSL_DEBUG */
1261 char *SSL_CIPHER_get_version(const SSL_CIPHER
*c
)
1265 if (c
== NULL
) return("(NONE)");
1266 i
=(int)(c
->id
>>24L);
1268 return("TLSv1/SSLv3");
1275 /* return the actual cipher being used */
1276 const char *SSL_CIPHER_get_name(const SSL_CIPHER
*c
)
1283 /* number of bits for symmetric cipher */
1284 int SSL_CIPHER_get_bits(const SSL_CIPHER
*c
, int *alg_bits
)
1290 if (alg_bits
!= NULL
) *alg_bits
= c
->alg_bits
;
1291 ret
= c
->strength_bits
;
1296 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
)
1301 if ((n
== 0) || (sk
== NULL
)) return(NULL
);
1302 nn
=sk_SSL_COMP_num(sk
);
1303 for (i
=0; i
<nn
; i
++)
1305 ctmp
=sk_SSL_COMP_value(sk
,i
);
1312 #ifdef OPENSSL_NO_COMP
1313 void *SSL_COMP_get_compression_methods(void)
1317 int SSL_COMP_add_compression_method(int id
, void *cm
)
1322 const char *SSL_COMP_get_name(const void *comp
)
1327 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1329 load_builtin_compressions();
1330 return(ssl_comp_methods
);
1333 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1337 if (cm
== NULL
|| cm
->type
== NID_undef
)
1340 /* According to draft-ietf-tls-compression-04.txt, the
1341 compression number ranges should be the following:
1343 0 to 63: methods defined by the IETF
1344 64 to 192: external party methods assigned by IANA
1345 193 to 255: reserved for private use */
1346 if (id
< 193 || id
> 255)
1348 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE
);
1353 comp
=(SSL_COMP
*)OPENSSL_malloc(sizeof(SSL_COMP
));
1356 load_builtin_compressions();
1357 if (ssl_comp_methods
1358 && sk_SSL_COMP_find(ssl_comp_methods
,comp
) >= 0)
1362 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,SSL_R_DUPLICATE_COMPRESSION_ID
);
1365 else if ((ssl_comp_methods
== NULL
)
1366 || !sk_SSL_COMP_push(ssl_comp_methods
,comp
))
1370 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,ERR_R_MALLOC_FAILURE
);
1380 const char *SSL_COMP_get_name(const COMP_METHOD
*comp
)