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 #include <openssl/comp.h>
119 #include "ssl_locl.h"
121 #define SSL_ENC_DES_IDX 0
122 #define SSL_ENC_3DES_IDX 1
123 #define SSL_ENC_RC4_IDX 2
124 #define SSL_ENC_RC2_IDX 3
125 #define SSL_ENC_IDEA_IDX 4
126 #define SSL_ENC_eFZA_IDX 5
127 #define SSL_ENC_NULL_IDX 6
128 #define SSL_ENC_AES128_IDX 7
129 #define SSL_ENC_AES256_IDX 8
130 #define SSL_ENC_CAMELLIA128_IDX 9
131 #define SSL_ENC_CAMELLIA256_IDX 10
132 #define SSL_ENC_SEED_IDX 11
133 #define SSL_ENC_NUM_IDX 12
136 static const EVP_CIPHER
*ssl_cipher_methods
[SSL_ENC_NUM_IDX
]={
137 NULL
,NULL
,NULL
,NULL
,NULL
,NULL
,
140 #define SSL_COMP_NULL_IDX 0
141 #define SSL_COMP_ZLIB_IDX 1
142 #define SSL_COMP_NUM_IDX 2
144 static STACK_OF(SSL_COMP
) *ssl_comp_methods
=NULL
;
146 #define SSL_MD_MD5_IDX 0
147 #define SSL_MD_SHA1_IDX 1
148 #define SSL_MD_NUM_IDX 2
149 static const EVP_MD
*ssl_digest_methods
[SSL_MD_NUM_IDX
]={
154 #define CIPHER_KILL 2
157 #define CIPHER_SPECIAL 5
159 typedef struct cipher_order_st
164 struct cipher_order_st
*next
,*prev
;
167 static const SSL_CIPHER cipher_aliases
[]={
168 /* Don't include eNULL unless specifically enabled. */
169 /* Don't include ECC in ALL because these ciphers are not yet official. */
170 {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 */
171 /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */
172 {0,SSL_TXT_CMPALL
,0,SSL_eNULL
,0,0,0,0,SSL_ENC_MASK
,0}, /* COMPLEMENT OF ALL */
173 {0,SSL_TXT_CMPDEF
,0,SSL_ADH
, 0,0,0,0,SSL_AUTH_MASK
,0},
174 {0,SSL_TXT_kKRB5
,0,SSL_kKRB5
,0,0,0,0,SSL_MKEY_MASK
,0}, /* VRS Kerberos5 */
175 {0,SSL_TXT_kRSA
,0,SSL_kRSA
, 0,0,0,0,SSL_MKEY_MASK
,0},
176 {0,SSL_TXT_kDHr
,0,SSL_kDHr
, 0,0,0,0,SSL_MKEY_MASK
,0},
177 {0,SSL_TXT_kDHd
,0,SSL_kDHd
, 0,0,0,0,SSL_MKEY_MASK
,0},
178 {0,SSL_TXT_kEDH
,0,SSL_kEDH
, 0,0,0,0,SSL_MKEY_MASK
,0},
179 {0,SSL_TXT_kFZA
,0,SSL_kFZA
, 0,0,0,0,SSL_MKEY_MASK
,0},
180 {0,SSL_TXT_DH
, 0,SSL_DH
, 0,0,0,0,SSL_MKEY_MASK
,0},
181 {0,SSL_TXT_ECC
, 0,(SSL_kECDH
|SSL_kECDHE
), 0,0,0,0,SSL_MKEY_MASK
,0},
182 {0,SSL_TXT_EDH
, 0,SSL_EDH
, 0,0,0,0,SSL_MKEY_MASK
|SSL_AUTH_MASK
,0},
183 {0,SSL_TXT_aKRB5
,0,SSL_aKRB5
,0,0,0,0,SSL_AUTH_MASK
,0}, /* VRS Kerberos5 */
184 {0,SSL_TXT_aRSA
,0,SSL_aRSA
, 0,0,0,0,SSL_AUTH_MASK
,0},
185 {0,SSL_TXT_aDSS
,0,SSL_aDSS
, 0,0,0,0,SSL_AUTH_MASK
,0},
186 {0,SSL_TXT_aFZA
,0,SSL_aFZA
, 0,0,0,0,SSL_AUTH_MASK
,0},
187 {0,SSL_TXT_aNULL
,0,SSL_aNULL
,0,0,0,0,SSL_AUTH_MASK
,0},
188 {0,SSL_TXT_aDH
, 0,SSL_aDH
, 0,0,0,0,SSL_AUTH_MASK
,0},
189 {0,SSL_TXT_DSS
, 0,SSL_DSS
, 0,0,0,0,SSL_AUTH_MASK
,0},
191 {0,SSL_TXT_DES
, 0,SSL_DES
, 0,0,0,0,SSL_ENC_MASK
,0},
192 {0,SSL_TXT_3DES
,0,SSL_3DES
, 0,0,0,0,SSL_ENC_MASK
,0},
193 {0,SSL_TXT_RC4
, 0,SSL_RC4
, 0,0,0,0,SSL_ENC_MASK
,0},
194 {0,SSL_TXT_RC2
, 0,SSL_RC2
, 0,0,0,0,SSL_ENC_MASK
,0},
195 #ifndef OPENSSL_NO_IDEA
196 {0,SSL_TXT_IDEA
,0,SSL_IDEA
, 0,0,0,0,SSL_ENC_MASK
,0},
198 {0,SSL_TXT_SEED
,0,SSL_SEED
, 0,0,0,0,SSL_ENC_MASK
,0},
199 {0,SSL_TXT_eNULL
,0,SSL_eNULL
,0,0,0,0,SSL_ENC_MASK
,0},
200 {0,SSL_TXT_eFZA
,0,SSL_eFZA
, 0,0,0,0,SSL_ENC_MASK
,0},
201 {0,SSL_TXT_AES
, 0,SSL_AES
, 0,0,0,0,SSL_ENC_MASK
,0},
202 {0,SSL_TXT_CAMELLIA
,0,SSL_CAMELLIA
, 0,0,0,0,SSL_ENC_MASK
,0},
204 {0,SSL_TXT_MD5
, 0,SSL_MD5
, 0,0,0,0,SSL_MAC_MASK
,0},
205 {0,SSL_TXT_SHA1
,0,SSL_SHA1
, 0,0,0,0,SSL_MAC_MASK
,0},
206 {0,SSL_TXT_SHA
, 0,SSL_SHA
, 0,0,0,0,SSL_MAC_MASK
,0},
208 {0,SSL_TXT_NULL
,0,SSL_NULL
, 0,0,0,0,SSL_ENC_MASK
,0},
209 {0,SSL_TXT_KRB5
,0,SSL_KRB5
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
,0},
210 {0,SSL_TXT_RSA
, 0,SSL_RSA
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
,0},
211 {0,SSL_TXT_ADH
, 0,SSL_ADH
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
,0},
212 {0,SSL_TXT_FZA
, 0,SSL_FZA
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
|SSL_ENC_MASK
,0},
214 {0,SSL_TXT_SSLV2
, 0,SSL_SSLV2
, 0,0,0,0,SSL_SSL_MASK
,0},
215 {0,SSL_TXT_SSLV3
, 0,SSL_SSLV3
, 0,0,0,0,SSL_SSL_MASK
,0},
216 {0,SSL_TXT_TLSV1
, 0,SSL_TLSV1
, 0,0,0,0,SSL_SSL_MASK
,0},
218 {0,SSL_TXT_EXP
,0, 0,SSL_EXPORT
, 0,0,0,0,SSL_EXP_MASK
},
219 {0,SSL_TXT_EXPORT
,0, 0,SSL_EXPORT
, 0,0,0,0,SSL_EXP_MASK
},
220 {0,SSL_TXT_EXP40
, 0, 0, SSL_EXP40
, 0,0,0,0,SSL_STRONG_MASK
},
221 {0,SSL_TXT_EXP56
, 0, 0, SSL_EXP56
, 0,0,0,0,SSL_STRONG_MASK
},
222 {0,SSL_TXT_LOW
, 0, 0, SSL_LOW
, 0,0,0,0,SSL_STRONG_MASK
},
223 {0,SSL_TXT_MEDIUM
,0, 0,SSL_MEDIUM
, 0,0,0,0,SSL_STRONG_MASK
},
224 {0,SSL_TXT_HIGH
, 0, 0, SSL_HIGH
, 0,0,0,0,SSL_STRONG_MASK
},
227 void ssl_load_ciphers(void)
229 ssl_cipher_methods
[SSL_ENC_DES_IDX
]=
230 EVP_get_cipherbyname(SN_des_cbc
);
231 ssl_cipher_methods
[SSL_ENC_3DES_IDX
]=
232 EVP_get_cipherbyname(SN_des_ede3_cbc
);
233 ssl_cipher_methods
[SSL_ENC_RC4_IDX
]=
234 EVP_get_cipherbyname(SN_rc4
);
235 ssl_cipher_methods
[SSL_ENC_RC2_IDX
]=
236 EVP_get_cipherbyname(SN_rc2_cbc
);
237 #ifndef OPENSSL_NO_IDEA
238 ssl_cipher_methods
[SSL_ENC_IDEA_IDX
]=
239 EVP_get_cipherbyname(SN_idea_cbc
);
241 ssl_cipher_methods
[SSL_ENC_IDEA_IDX
]= NULL
;
243 ssl_cipher_methods
[SSL_ENC_AES128_IDX
]=
244 EVP_get_cipherbyname(SN_aes_128_cbc
);
245 ssl_cipher_methods
[SSL_ENC_AES256_IDX
]=
246 EVP_get_cipherbyname(SN_aes_256_cbc
);
247 ssl_cipher_methods
[SSL_ENC_CAMELLIA128_IDX
]=
248 EVP_get_cipherbyname(SN_camellia_128_cbc
);
249 ssl_cipher_methods
[SSL_ENC_CAMELLIA256_IDX
]=
250 EVP_get_cipherbyname(SN_camellia_256_cbc
);
251 ssl_cipher_methods
[SSL_ENC_SEED_IDX
]=
252 EVP_get_cipherbyname(SN_seed_cbc
);
254 ssl_digest_methods
[SSL_MD_MD5_IDX
]=
255 EVP_get_digestbyname(SN_md5
);
256 ssl_digest_methods
[SSL_MD_SHA1_IDX
]=
257 EVP_get_digestbyname(SN_sha1
);
261 #ifndef OPENSSL_NO_COMP
263 static int sk_comp_cmp(const SSL_COMP
* const *a
,
264 const SSL_COMP
* const *b
)
266 return((*a
)->id
-(*b
)->id
);
269 static void load_builtin_compressions(void)
271 int got_write_lock
= 0;
273 CRYPTO_r_lock(CRYPTO_LOCK_SSL
);
274 if (ssl_comp_methods
== NULL
)
276 CRYPTO_r_unlock(CRYPTO_LOCK_SSL
);
277 CRYPTO_w_lock(CRYPTO_LOCK_SSL
);
280 if (ssl_comp_methods
== NULL
)
282 SSL_COMP
*comp
= NULL
;
285 ssl_comp_methods
=sk_SSL_COMP_new(sk_comp_cmp
);
286 if (ssl_comp_methods
!= NULL
)
288 comp
=(SSL_COMP
*)OPENSSL_malloc(sizeof(SSL_COMP
));
291 comp
->method
=COMP_zlib();
293 && comp
->method
->type
== NID_undef
)
297 comp
->id
=SSL_COMP_ZLIB_IDX
;
298 comp
->name
=comp
->method
->name
;
299 sk_SSL_COMP_push(ssl_comp_methods
,comp
);
308 CRYPTO_w_unlock(CRYPTO_LOCK_SSL
);
310 CRYPTO_r_unlock(CRYPTO_LOCK_SSL
);
314 int ssl_cipher_get_evp(const SSL_SESSION
*s
, const EVP_CIPHER
**enc
,
315 const EVP_MD
**md
, SSL_COMP
**comp
)
321 if (c
== NULL
) return(0);
325 #ifndef OPENSSL_NO_COMP
326 load_builtin_compressions();
330 ctmp
.id
=s
->compress_meth
;
331 if (ssl_comp_methods
!= NULL
)
333 i
=sk_SSL_COMP_find(ssl_comp_methods
,&ctmp
);
335 *comp
=sk_SSL_COMP_value(ssl_comp_methods
,i
);
341 if ((enc
== NULL
) || (md
== NULL
)) return(0);
343 switch (c
->algorithms
& SSL_ENC_MASK
)
366 case 128: i
=SSL_ENC_AES128_IDX
; break;
367 case 256: i
=SSL_ENC_AES256_IDX
; break;
368 default: i
=-1; break;
374 case 128: i
=SSL_ENC_CAMELLIA128_IDX
; break;
375 case 256: i
=SSL_ENC_CAMELLIA256_IDX
; break;
376 default: i
=-1; break;
388 if ((i
< 0) || (i
> SSL_ENC_NUM_IDX
))
392 if (i
== SSL_ENC_NULL_IDX
)
395 *enc
=ssl_cipher_methods
[i
];
398 switch (c
->algorithms
& SSL_MAC_MASK
)
410 if ((i
< 0) || (i
> SSL_MD_NUM_IDX
))
413 *md
=ssl_digest_methods
[i
];
415 if ((*enc
!= NULL
) && (*md
!= NULL
))
421 #define ITEM_SEP(a) \
422 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
424 static void ll_append_tail(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
427 if (curr
== *tail
) return;
430 if (curr
->prev
!= NULL
)
431 curr
->prev
->next
=curr
->next
;
432 if (curr
->next
!= NULL
) /* should always be true */
433 curr
->next
->prev
=curr
->prev
;
440 struct disabled_masks
{ /* This is a kludge no longer needed with OpenSSL 0.9.9,
441 * where 128-bit and 256-bit algorithms simply will get
443 unsigned long mask
; /* everything except m256 */
444 unsigned long m256
; /* applies to 256-bit algorithms only */
447 static struct disabled_masks
ssl_cipher_get_disabled(void)
451 struct disabled_masks ret
;
454 #ifdef OPENSSL_NO_RSA
455 mask
|= SSL_aRSA
|SSL_kRSA
;
457 #ifdef OPENSSL_NO_DSA
461 mask
|= SSL_kDHr
|SSL_kDHd
|SSL_kEDH
|SSL_aDH
;
463 #ifdef OPENSSL_NO_KRB5
464 mask
|= SSL_kKRB5
|SSL_aKRB5
;
466 #ifdef OPENSSL_NO_ECDH
467 mask
|= SSL_kECDH
|SSL_kECDHE
;
469 #ifdef SSL_FORBID_ENULL
473 mask
|= (ssl_cipher_methods
[SSL_ENC_DES_IDX
] == NULL
) ? SSL_DES
:0;
474 mask
|= (ssl_cipher_methods
[SSL_ENC_3DES_IDX
] == NULL
) ? SSL_3DES
:0;
475 mask
|= (ssl_cipher_methods
[SSL_ENC_RC4_IDX
] == NULL
) ? SSL_RC4
:0;
476 mask
|= (ssl_cipher_methods
[SSL_ENC_RC2_IDX
] == NULL
) ? SSL_RC2
:0;
477 mask
|= (ssl_cipher_methods
[SSL_ENC_IDEA_IDX
] == NULL
) ? SSL_IDEA
:0;
478 mask
|= (ssl_cipher_methods
[SSL_ENC_eFZA_IDX
] == NULL
) ? SSL_eFZA
:0;
479 mask
|= (ssl_cipher_methods
[SSL_ENC_SEED_IDX
] == NULL
) ? SSL_SEED
:0;
481 mask
|= (ssl_digest_methods
[SSL_MD_MD5_IDX
] == NULL
) ? SSL_MD5
:0;
482 mask
|= (ssl_digest_methods
[SSL_MD_SHA1_IDX
] == NULL
) ? SSL_SHA1
:0;
484 /* finally consider algorithms where mask and m256 differ */
486 mask
|= (ssl_cipher_methods
[SSL_ENC_AES128_IDX
] == NULL
) ? SSL_AES
:0;
487 mask
|= (ssl_cipher_methods
[SSL_ENC_CAMELLIA128_IDX
] == NULL
) ? SSL_CAMELLIA
:0;
488 m256
|= (ssl_cipher_methods
[SSL_ENC_AES256_IDX
] == NULL
) ? SSL_AES
:0;
489 m256
|= (ssl_cipher_methods
[SSL_ENC_CAMELLIA256_IDX
] == NULL
) ? SSL_CAMELLIA
:0;
496 static void ssl_cipher_collect_ciphers(const SSL_METHOD
*ssl_method
,
497 int num_of_ciphers
, unsigned long mask
, unsigned long m256
,
498 CIPHER_ORDER
*co_list
, CIPHER_ORDER
**head_p
,
499 CIPHER_ORDER
**tail_p
)
505 * We have num_of_ciphers descriptions compiled in, depending on the
506 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
507 * These will later be sorted in a linked list with at most num
511 /* Get the initial list of ciphers */
512 co_list_num
= 0; /* actual count of ciphers */
513 for (i
= 0; i
< num_of_ciphers
; i
++)
515 c
= ssl_method
->get_cipher(i
);
516 #define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask))
517 /* drop those that use any of that is not available */
518 if ((c
!= NULL
) && c
->valid
&& !IS_MASKED(c
))
520 co_list
[co_list_num
].cipher
= c
;
521 co_list
[co_list_num
].next
= NULL
;
522 co_list
[co_list_num
].prev
= NULL
;
523 co_list
[co_list_num
].active
= 0;
526 printf("\t%d: %s %lx %lx\n",i
,c
->name
,c
->id
,c
->algorithms
);
527 #endif /* KSSL_DEBUG */
529 if (!sk_push(ca_list,(char *)c)) goto err;
535 * Prepare linked list from list entries
537 for (i
= 1; i
< co_list_num
- 1; i
++)
539 co_list
[i
].prev
= &(co_list
[i
-1]);
540 co_list
[i
].next
= &(co_list
[i
+1]);
544 (*head_p
) = &(co_list
[0]);
545 (*head_p
)->prev
= NULL
;
546 (*head_p
)->next
= &(co_list
[1]);
547 (*tail_p
) = &(co_list
[co_list_num
- 1]);
548 (*tail_p
)->prev
= &(co_list
[co_list_num
- 2]);
549 (*tail_p
)->next
= NULL
;
553 static void ssl_cipher_collect_aliases(SSL_CIPHER
**ca_list
,
554 int num_of_group_aliases
, unsigned long mask
,
557 CIPHER_ORDER
*ciph_curr
;
558 SSL_CIPHER
**ca_curr
;
562 * First, add the real ciphers as already collected
566 while (ciph_curr
!= NULL
)
568 *ca_curr
= ciph_curr
->cipher
;
570 ciph_curr
= ciph_curr
->next
;
574 * Now we add the available ones from the cipher_aliases[] table.
575 * They represent either an algorithm, that must be fully
576 * supported (not match any bit in mask) or represent a cipher
577 * strength value (will be added in any case because algorithms=0).
579 for (i
= 0; i
< num_of_group_aliases
; i
++)
581 if ((i
== 0) || /* always fetch "ALL" */
582 !(cipher_aliases
[i
].algorithms
& mask
))
584 *ca_curr
= (SSL_CIPHER
*)(cipher_aliases
+ i
);
589 *ca_curr
= NULL
; /* end of list */
592 static void ssl_cipher_apply_rule(unsigned long cipher_id
, unsigned long ssl_version
,
593 unsigned long algorithms
, unsigned long mask
,
594 unsigned long algo_strength
, unsigned long mask_strength
,
595 int rule
, int strength_bits
, CIPHER_ORDER
*co_list
,
596 CIPHER_ORDER
**head_p
, CIPHER_ORDER
**tail_p
)
598 CIPHER_ORDER
*head
, *tail
, *curr
, *curr2
, *tail2
;
600 unsigned long ma
, ma_s
;
603 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n",
604 rule
, algorithms
, mask
, algo_strength
, mask_strength
,
608 curr
= head
= *head_p
;
610 tail2
= tail
= *tail_p
;
613 if ((curr
== NULL
) || (curr
== tail2
)) break;
619 /* If explicit cipher suite, match only that one for its own protocol version.
620 * Usual selection criteria will be used for similar ciphersuites from other version! */
622 if (cipher_id
&& (cp
->algorithms
& SSL_SSL_MASK
) == ssl_version
)
624 if (cp
->id
!= cipher_id
)
629 * Selection criteria is either the number of strength_bits
630 * or the algorithm used.
632 else if (strength_bits
== -1)
634 ma
= mask
& cp
->algorithms
;
635 ma_s
= mask_strength
& cp
->algo_strength
;
638 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp
->name
, cp
->algorithms
, cp
->algo_strength
, mask
, mask_strength
);
639 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma
, ma_s
, ma
&algorithms
, ma_s
&algo_strength
);
642 * Select: if none of the mask bit was met from the
643 * cipher or not all of the bits were met, the
644 * selection does not apply.
646 if (((ma
== 0) && (ma_s
== 0)) ||
647 ((ma
& algorithms
) != ma
) ||
648 ((ma_s
& algo_strength
) != ma_s
))
649 continue; /* does not apply */
651 else if (strength_bits
!= cp
->strength_bits
)
652 continue; /* does not apply */
655 printf("Action = %d\n", rule
);
658 /* add the cipher if it has not been added yet. */
659 if (rule
== CIPHER_ADD
)
663 int add_this_cipher
= 1;
665 if (((cp
->algorithms
& (SSL_kECDHE
|SSL_kECDH
|SSL_aECDSA
)) != 0))
667 /* Make sure "ECCdraft" ciphersuites are activated only if
668 * *explicitly* requested, but not implicitly (such as
669 * as part of the "AES" alias). */
671 add_this_cipher
= (mask
& (SSL_kECDHE
|SSL_kECDH
|SSL_aECDSA
)) != 0 || cipher_id
!= 0;
676 ll_append_tail(&head
, curr
, &tail
);
681 /* Move the added cipher to this location */
682 else if (rule
== CIPHER_ORD
)
686 ll_append_tail(&head
, curr
, &tail
);
689 else if (rule
== CIPHER_DEL
)
691 else if (rule
== CIPHER_KILL
)
696 curr
->prev
->next
= curr
->next
;
700 if (curr
->next
!= NULL
)
701 curr
->next
->prev
= curr
->prev
;
702 if (curr
->prev
!= NULL
)
703 curr
->prev
->next
= curr
->next
;
713 static int ssl_cipher_strength_sort(CIPHER_ORDER
*co_list
,
714 CIPHER_ORDER
**head_p
,
715 CIPHER_ORDER
**tail_p
)
717 int max_strength_bits
, i
, *number_uses
;
721 * This routine sorts the ciphers with descending strength. The sorting
722 * must keep the pre-sorted sequence, so we apply the normal sorting
723 * routine as '+' movement to the end of the list.
725 max_strength_bits
= 0;
730 (curr
->cipher
->strength_bits
> max_strength_bits
))
731 max_strength_bits
= curr
->cipher
->strength_bits
;
735 number_uses
= OPENSSL_malloc((max_strength_bits
+ 1) * sizeof(int));
738 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT
,ERR_R_MALLOC_FAILURE
);
741 memset(number_uses
, 0, (max_strength_bits
+ 1) * sizeof(int));
744 * Now find the strength_bits values actually used
750 number_uses
[curr
->cipher
->strength_bits
]++;
754 * Go through the list of used strength_bits values in descending
757 for (i
= max_strength_bits
; i
>= 0; i
--)
758 if (number_uses
[i
] > 0)
759 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD
, i
,
760 co_list
, head_p
, tail_p
);
762 OPENSSL_free(number_uses
);
766 static int ssl_cipher_process_rulestr(const char *rule_str
,
767 CIPHER_ORDER
*co_list
, CIPHER_ORDER
**head_p
,
768 CIPHER_ORDER
**tail_p
, SSL_CIPHER
**ca_list
)
770 unsigned long algorithms
, mask
, algo_strength
, mask_strength
;
771 const char *l
, *start
, *buf
;
772 int j
, multi
, found
, rule
, retval
, ok
, buflen
;
773 unsigned long cipher_id
= 0, ssl_version
= 0;
785 { rule
= CIPHER_DEL
; l
++; }
787 { rule
= CIPHER_ORD
; l
++; }
789 { rule
= CIPHER_KILL
; l
++; }
791 { rule
= CIPHER_SPECIAL
; l
++; }
793 { rule
= CIPHER_ADD
; }
801 algorithms
= mask
= algo_strength
= mask_strength
= 0;
809 #ifndef CHARSET_EBCDIC
810 while ( ((ch
>= 'A') && (ch
<= 'Z')) ||
811 ((ch
>= '0') && (ch
<= '9')) ||
812 ((ch
>= 'a') && (ch
<= 'z')) ||
815 while ( isalnum(ch
) || (ch
== '-'))
825 * We hit something we cannot deal with,
826 * it is no command or separator nor
827 * alphanumeric, so we call this an error.
829 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
830 SSL_R_INVALID_COMMAND
);
836 if (rule
== CIPHER_SPECIAL
)
838 found
= 0; /* unused -- avoid compiler warning */
839 break; /* special treatment */
842 /* check for multi-part specification */
852 * Now search for the cipher alias in the ca_list. Be careful
853 * with the strncmp, because the "buflen" limitation
854 * will make the rule "ADH:SOME" and the cipher
855 * "ADH-MY-CIPHER" look like a match for buflen=3.
856 * So additionally check whether the cipher name found
857 * has the correct length. We can save a strlen() call:
858 * just checking for the '\0' at the right place is
859 * sufficient, we have to strncmp() anyway. (We cannot
860 * use strcmp(), because buf is not '\0' terminated.)
867 if (!strncmp(buf
, ca_list
[j
]->name
, buflen
) &&
868 (ca_list
[j
]->name
[buflen
] == '\0'))
877 break; /* ignore this entry */
880 * 1 - any old restrictions apply outside new mask
881 * 2 - any new restrictions apply outside old mask
882 * 3 - enforce old & new where masks intersect
884 algorithms
= (algorithms
& ~ca_list
[j
]->mask
) | /* 1 */
885 (ca_list
[j
]->algorithms
& ~mask
) | /* 2 */
886 (algorithms
& ca_list
[j
]->algorithms
); /* 3 */
887 mask
|= ca_list
[j
]->mask
;
888 algo_strength
= (algo_strength
& ~ca_list
[j
]->mask_strength
) |
889 (ca_list
[j
]->algo_strength
& ~mask_strength
) |
890 (algo_strength
& ca_list
[j
]->algo_strength
);
891 mask_strength
|= ca_list
[j
]->mask_strength
;
893 /* explicit ciphersuite found */
894 if (ca_list
[j
]->valid
)
896 cipher_id
= ca_list
[j
]->id
;
897 ssl_version
= ca_list
[j
]->algorithms
& SSL_SSL_MASK
;
905 * Ok, we have the rule, now apply it
907 if (rule
== CIPHER_SPECIAL
)
908 { /* special command */
911 !strncmp(buf
, "STRENGTH", 8))
912 ok
= ssl_cipher_strength_sort(co_list
,
915 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
916 SSL_R_INVALID_COMMAND
);
920 * We do not support any "multi" options
921 * together with "@", so throw away the
922 * rest of the command, if any left, until
923 * end or ':' is found.
925 while ((*l
!= '\0') && !ITEM_SEP(*l
))
930 ssl_cipher_apply_rule(cipher_id
, ssl_version
, algorithms
, mask
,
931 algo_strength
, mask_strength
, rule
, -1,
932 co_list
, head_p
, tail_p
);
936 while ((*l
!= '\0') && !ITEM_SEP(*l
))
939 if (*l
== '\0') break; /* done */
945 STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*ssl_method
,
946 STACK_OF(SSL_CIPHER
) **cipher_list
,
947 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
948 const char *rule_str
)
950 int ok
, num_of_ciphers
, num_of_alias_max
, num_of_group_aliases
;
951 unsigned long disabled_mask
;
952 unsigned long disabled_m256
;
953 STACK_OF(SSL_CIPHER
) *cipherstack
, *tmp_cipher_list
;
955 CIPHER_ORDER
*co_list
= NULL
, *head
= NULL
, *tail
= NULL
, *curr
;
956 SSL_CIPHER
**ca_list
= NULL
;
959 * Return with error if nothing to do.
961 if (rule_str
== NULL
|| cipher_list
== NULL
|| cipher_list_by_id
== NULL
)
965 * To reduce the work to do we only want to process the compiled
966 * in algorithms, so we first get the mask of disabled ciphers.
969 struct disabled_masks d
;
970 d
= ssl_cipher_get_disabled();
971 disabled_mask
= d
.mask
;
972 disabled_m256
= d
.m256
;
976 * Now we have to collect the available ciphers from the compiled
977 * in ciphers. We cannot get more than the number compiled in, so
978 * it is used for allocation.
980 num_of_ciphers
= ssl_method
->num_ciphers();
982 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers
);
983 #endif /* KSSL_DEBUG */
984 co_list
= (CIPHER_ORDER
*)OPENSSL_malloc(sizeof(CIPHER_ORDER
) * num_of_ciphers
);
987 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
,ERR_R_MALLOC_FAILURE
);
988 return(NULL
); /* Failure */
991 ssl_cipher_collect_ciphers(ssl_method
, num_of_ciphers
, disabled_mask
,
992 disabled_m256
, co_list
, &head
, &tail
);
995 * We also need cipher aliases for selecting based on the rule_str.
996 * There might be two types of entries in the rule_str: 1) names
997 * of ciphers themselves 2) aliases for groups of ciphers.
998 * For 1) we need the available ciphers and for 2) the cipher
999 * groups of cipher_aliases added together in one list (otherwise
1000 * we would be happy with just the cipher_aliases table).
1002 num_of_group_aliases
= sizeof(cipher_aliases
) / sizeof(SSL_CIPHER
);
1003 num_of_alias_max
= num_of_ciphers
+ num_of_group_aliases
+ 1;
1005 (SSL_CIPHER
**)OPENSSL_malloc(sizeof(SSL_CIPHER
*) * num_of_alias_max
);
1006 if (ca_list
== NULL
)
1008 OPENSSL_free(co_list
);
1009 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
,ERR_R_MALLOC_FAILURE
);
1010 return(NULL
); /* Failure */
1012 ssl_cipher_collect_aliases(ca_list
, num_of_group_aliases
,
1013 (disabled_mask
& disabled_m256
), head
);
1016 * If the rule_string begins with DEFAULT, apply the default rule
1017 * before using the (possibly available) additional rules.
1021 if (strncmp(rule_str
,"DEFAULT",7) == 0)
1023 ok
= ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST
,
1024 co_list
, &head
, &tail
, ca_list
);
1030 if (ok
&& (strlen(rule_p
) > 0))
1031 ok
= ssl_cipher_process_rulestr(rule_p
, co_list
, &head
, &tail
,
1034 OPENSSL_free(ca_list
); /* Not needed anymore */
1037 { /* Rule processing failure */
1038 OPENSSL_free(co_list
);
1042 * Allocate new "cipherstack" for the result, return with error
1043 * if we cannot get one.
1045 if ((cipherstack
= sk_SSL_CIPHER_new_null()) == NULL
)
1047 OPENSSL_free(co_list
);
1052 * The cipher selection for the list is done. The ciphers are added
1053 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1055 for (curr
= head
; curr
!= NULL
; curr
= curr
->next
)
1059 sk_SSL_CIPHER_push(cipherstack
, curr
->cipher
);
1061 printf("<%s>\n",curr
->cipher
->name
);
1065 OPENSSL_free(co_list
); /* Not needed any longer */
1067 tmp_cipher_list
= sk_SSL_CIPHER_dup(cipherstack
);
1068 if (tmp_cipher_list
== NULL
)
1070 sk_SSL_CIPHER_free(cipherstack
);
1073 if (*cipher_list
!= NULL
)
1074 sk_SSL_CIPHER_free(*cipher_list
);
1075 *cipher_list
= cipherstack
;
1076 if (*cipher_list_by_id
!= NULL
)
1077 sk_SSL_CIPHER_free(*cipher_list_by_id
);
1078 *cipher_list_by_id
= tmp_cipher_list
;
1079 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id
,ssl_cipher_ptr_id_cmp
);
1081 return(cipherstack
);
1084 char *SSL_CIPHER_description(SSL_CIPHER
*cipher
, char *buf
, int len
)
1086 int is_export
,pkl
,kl
;
1087 const char *ver
,*exp_str
;
1088 const char *kx
,*au
,*enc
,*mac
;
1089 unsigned long alg
,alg2
,alg_s
;
1091 static const char *format
="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n";
1093 static const char *format
="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1094 #endif /* KSSL_DEBUG */
1096 alg
=cipher
->algorithms
;
1097 alg_s
=cipher
->algo_strength
;
1098 alg2
=cipher
->algorithm2
;
1100 is_export
=SSL_C_IS_EXPORT(cipher
);
1101 pkl
=SSL_C_EXPORT_PKEYLENGTH(cipher
);
1102 kl
=SSL_C_EXPORT_KEYLENGTH(cipher
);
1103 exp_str
=is_export
?" export":"";
1105 if (alg
& SSL_SSLV2
)
1107 else if (alg
& SSL_SSLV3
)
1112 switch (alg
&SSL_MKEY_MASK
)
1115 kx
=is_export
?(pkl
== 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1123 case SSL_kKRB5
: /* VRS */
1124 case SSL_KRB5
: /* VRS */
1131 kx
=is_export
?(pkl
== 512 ? "DH(512)" : "DH(1024)"):"DH";
1135 kx
=is_export
?"ECDH(<=163)":"ECDH";
1141 switch (alg
&SSL_AUTH_MASK
)
1152 case SSL_aKRB5
: /* VRS */
1153 case SSL_KRB5
: /* VRS */
1168 switch (alg
&SSL_ENC_MASK
)
1171 enc
=(is_export
&& kl
== 5)?"DES(40)":"DES(56)";
1177 enc
=is_export
?(kl
== 5 ? "RC4(40)" : "RC4(56)")
1178 :((alg2
&SSL2_CF_8_BYTE_ENC
)?"RC4(64)":"RC4(128)");
1181 enc
=is_export
?(kl
== 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1193 switch(cipher
->strength_bits
)
1195 case 128: enc
="AES(128)"; break;
1196 case 192: enc
="AES(192)"; break;
1197 case 256: enc
="AES(256)"; break;
1198 default: enc
="AES(?""?""?)"; break;
1202 switch(cipher
->strength_bits
)
1204 case 128: enc
="Camellia(128)"; break;
1205 case 256: enc
="Camellia(256)"; break;
1206 default: enc
="Camellia(?""?""?)"; break;
1218 switch (alg
&SSL_MAC_MASK
)
1234 buf
=OPENSSL_malloc(len
);
1235 if (buf
== NULL
) return("OPENSSL_malloc Error");
1238 return("Buffer too small");
1241 BIO_snprintf(buf
,len
,format
,cipher
->name
,ver
,kx
,au
,enc
,mac
,exp_str
,alg
);
1243 BIO_snprintf(buf
,len
,format
,cipher
->name
,ver
,kx
,au
,enc
,mac
,exp_str
);
1244 #endif /* KSSL_DEBUG */
1248 char *SSL_CIPHER_get_version(const SSL_CIPHER
*c
)
1252 if (c
== NULL
) return("(NONE)");
1253 i
=(int)(c
->id
>>24L);
1255 return("TLSv1/SSLv3");
1262 /* return the actual cipher being used */
1263 const char *SSL_CIPHER_get_name(const SSL_CIPHER
*c
)
1270 /* number of bits for symmetric cipher */
1271 int SSL_CIPHER_get_bits(const SSL_CIPHER
*c
, int *alg_bits
)
1277 if (alg_bits
!= NULL
) *alg_bits
= c
->alg_bits
;
1278 ret
= c
->strength_bits
;
1283 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
)
1288 if ((n
== 0) || (sk
== NULL
)) return(NULL
);
1289 nn
=sk_SSL_COMP_num(sk
);
1290 for (i
=0; i
<nn
; i
++)
1292 ctmp
=sk_SSL_COMP_value(sk
,i
);
1299 #ifdef OPENSSL_NO_COMP
1300 void *SSL_COMP_get_compression_methods(void)
1304 int SSL_COMP_add_compression_method(int id
, void *cm
)
1309 const char *SSL_COMP_get_name(const void *comp
)
1314 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1316 load_builtin_compressions();
1317 return(ssl_comp_methods
);
1320 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1324 if (cm
== NULL
|| cm
->type
== NID_undef
)
1327 /* According to draft-ietf-tls-compression-04.txt, the
1328 compression number ranges should be the following:
1330 0 to 63: methods defined by the IETF
1331 64 to 192: external party methods assigned by IANA
1332 193 to 255: reserved for private use */
1333 if (id
< 193 || id
> 255)
1335 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE
);
1340 comp
=(SSL_COMP
*)OPENSSL_malloc(sizeof(SSL_COMP
));
1343 load_builtin_compressions();
1344 if (ssl_comp_methods
1345 && !sk_SSL_COMP_find(ssl_comp_methods
,comp
))
1349 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,SSL_R_DUPLICATE_COMPRESSION_ID
);
1352 else if ((ssl_comp_methods
== NULL
)
1353 || !sk_SSL_COMP_push(ssl_comp_methods
,comp
))
1357 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,ERR_R_MALLOC_FAILURE
);
1367 const char *SSL_COMP_get_name(const COMP_METHOD
*comp
)