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 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
60 * ECC cipher suite support in OpenSSL originally developed by
61 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
63 /* ====================================================================
64 * Copyright 2005 Nokia. All rights reserved.
66 * The portions of the attached software ("Contribution") is developed by
67 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
70 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
71 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
72 * support (see RFC 4279) to OpenSSL.
74 * No patent licenses or other rights except those expressly stated in
75 * the OpenSSL open source license shall be deemed granted or received
76 * expressly, by implication, estoppel, or otherwise.
78 * No assurances are provided by Nokia that the Contribution does not
79 * infringe the patent or other intellectual property rights of any third
80 * party or that the license provides you with all the necessary rights
81 * to make use of the Contribution.
83 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
84 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
85 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
86 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
91 #include <openssl/objects.h>
92 #include <openssl/comp.h>
95 #define SSL_ENC_DES_IDX 0
96 #define SSL_ENC_3DES_IDX 1
97 #define SSL_ENC_RC4_IDX 2
98 #define SSL_ENC_RC2_IDX 3
99 #define SSL_ENC_IDEA_IDX 4
100 #define SSL_ENC_eFZA_IDX 5
101 #define SSL_ENC_NULL_IDX 6
102 #define SSL_ENC_AES128_IDX 7
103 #define SSL_ENC_AES256_IDX 8
104 #define SSL_ENC_NUM_IDX 9
106 static const EVP_CIPHER
*ssl_cipher_methods
[SSL_ENC_NUM_IDX
]={
107 NULL
,NULL
,NULL
,NULL
,NULL
,NULL
,
110 #define SSL_COMP_NULL_IDX 0
111 #define SSL_COMP_ZLIB_IDX 1
112 #define SSL_COMP_NUM_IDX 2
114 static STACK_OF(SSL_COMP
) *ssl_comp_methods
=NULL
;
116 #define SSL_MD_MD5_IDX 0
117 #define SSL_MD_SHA1_IDX 1
118 #define SSL_MD_NUM_IDX 2
119 static const EVP_MD
*ssl_digest_methods
[SSL_MD_NUM_IDX
]={
124 #define CIPHER_KILL 2
127 #define CIPHER_SPECIAL 5
129 typedef struct cipher_order_st
134 struct cipher_order_st
*next
,*prev
;
137 static const SSL_CIPHER cipher_aliases
[]={
138 /* Don't include eNULL unless specifically enabled. */
139 /* Don't include ECC in ALL because these ciphers are not yet official. */
140 {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 */
141 /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */
142 {0,SSL_TXT_CMPALL
,0,SSL_eNULL
,0,0,0,0,SSL_ENC_MASK
,0}, /* COMPLEMENT OF ALL */
143 {0,SSL_TXT_CMPDEF
,0,SSL_ADH
, 0,0,0,0,SSL_AUTH_MASK
,0},
144 {0,SSL_TXT_kKRB5
,0,SSL_kKRB5
,0,0,0,0,SSL_MKEY_MASK
,0}, /* VRS Kerberos5 */
145 {0,SSL_TXT_kRSA
,0,SSL_kRSA
, 0,0,0,0,SSL_MKEY_MASK
,0},
146 {0,SSL_TXT_kDHr
,0,SSL_kDHr
, 0,0,0,0,SSL_MKEY_MASK
,0},
147 {0,SSL_TXT_kDHd
,0,SSL_kDHd
, 0,0,0,0,SSL_MKEY_MASK
,0},
148 {0,SSL_TXT_kEDH
,0,SSL_kEDH
, 0,0,0,0,SSL_MKEY_MASK
,0},
149 {0,SSL_TXT_kFZA
,0,SSL_kFZA
, 0,0,0,0,SSL_MKEY_MASK
,0},
150 {0,SSL_TXT_kPSK
,0,SSL_kPSK
, 0,0,0,0,SSL_MKEY_MASK
,0},
151 {0,SSL_TXT_DH
, 0,SSL_DH
, 0,0,0,0,SSL_MKEY_MASK
,0},
152 {0,SSL_TXT_ECC
, 0,(SSL_kECDH
|SSL_kECDHE
), 0,0,0,0,SSL_MKEY_MASK
,0},
153 {0,SSL_TXT_EDH
, 0,SSL_EDH
, 0,0,0,0,SSL_MKEY_MASK
|SSL_AUTH_MASK
,0},
154 {0,SSL_TXT_aKRB5
,0,SSL_aKRB5
,0,0,0,0,SSL_AUTH_MASK
,0}, /* VRS Kerberos5 */
155 {0,SSL_TXT_aRSA
,0,SSL_aRSA
, 0,0,0,0,SSL_AUTH_MASK
,0},
156 {0,SSL_TXT_aDSS
,0,SSL_aDSS
, 0,0,0,0,SSL_AUTH_MASK
,0},
157 {0,SSL_TXT_aFZA
,0,SSL_aFZA
, 0,0,0,0,SSL_AUTH_MASK
,0},
158 {0,SSL_TXT_aPSK
,0,SSL_aPSK
, 0,0,0,0,SSL_AUTH_MASK
,0},
159 {0,SSL_TXT_aNULL
,0,SSL_aNULL
,0,0,0,0,SSL_AUTH_MASK
,0},
160 {0,SSL_TXT_aDH
, 0,SSL_aDH
, 0,0,0,0,SSL_AUTH_MASK
,0},
161 {0,SSL_TXT_DSS
, 0,SSL_DSS
, 0,0,0,0,SSL_AUTH_MASK
,0},
163 {0,SSL_TXT_DES
, 0,SSL_DES
, 0,0,0,0,SSL_ENC_MASK
,0},
164 {0,SSL_TXT_3DES
,0,SSL_3DES
, 0,0,0,0,SSL_ENC_MASK
,0},
165 {0,SSL_TXT_RC4
, 0,SSL_RC4
, 0,0,0,0,SSL_ENC_MASK
,0},
166 {0,SSL_TXT_RC2
, 0,SSL_RC2
, 0,0,0,0,SSL_ENC_MASK
,0},
167 #ifndef OPENSSL_NO_IDEA
168 {0,SSL_TXT_IDEA
,0,SSL_IDEA
, 0,0,0,0,SSL_ENC_MASK
,0},
170 {0,SSL_TXT_eNULL
,0,SSL_eNULL
,0,0,0,0,SSL_ENC_MASK
,0},
171 {0,SSL_TXT_eFZA
,0,SSL_eFZA
, 0,0,0,0,SSL_ENC_MASK
,0},
172 {0,SSL_TXT_AES
, 0,SSL_AES
, 0,0,0,0,SSL_ENC_MASK
,0},
174 {0,SSL_TXT_MD5
, 0,SSL_MD5
, 0,0,0,0,SSL_MAC_MASK
,0},
175 {0,SSL_TXT_SHA1
,0,SSL_SHA1
, 0,0,0,0,SSL_MAC_MASK
,0},
176 {0,SSL_TXT_SHA
, 0,SSL_SHA
, 0,0,0,0,SSL_MAC_MASK
,0},
178 {0,SSL_TXT_NULL
,0,SSL_NULL
, 0,0,0,0,SSL_ENC_MASK
,0},
179 {0,SSL_TXT_KRB5
,0,SSL_KRB5
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
,0},
180 {0,SSL_TXT_RSA
, 0,SSL_RSA
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
,0},
181 {0,SSL_TXT_ADH
, 0,SSL_ADH
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
,0},
182 {0,SSL_TXT_FZA
, 0,SSL_FZA
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
|SSL_ENC_MASK
,0},
183 {0,SSL_TXT_PSK
, 0,SSL_PSK
, 0,0,0,0,SSL_AUTH_MASK
|SSL_MKEY_MASK
,0},
185 {0,SSL_TXT_SSLV2
, 0,SSL_SSLV2
, 0,0,0,0,SSL_SSL_MASK
,0},
186 {0,SSL_TXT_SSLV3
, 0,SSL_SSLV3
, 0,0,0,0,SSL_SSL_MASK
,0},
187 {0,SSL_TXT_TLSV1
, 0,SSL_TLSV1
, 0,0,0,0,SSL_SSL_MASK
,0},
189 {0,SSL_TXT_EXP
,0, 0,SSL_EXPORT
, 0,0,0,0,SSL_EXP_MASK
},
190 {0,SSL_TXT_EXPORT
,0, 0,SSL_EXPORT
, 0,0,0,0,SSL_EXP_MASK
},
191 {0,SSL_TXT_EXP40
, 0, 0, SSL_EXP40
, 0,0,0,0,SSL_STRONG_MASK
},
192 {0,SSL_TXT_EXP56
, 0, 0, SSL_EXP56
, 0,0,0,0,SSL_STRONG_MASK
},
193 {0,SSL_TXT_LOW
, 0, 0, SSL_LOW
, 0,0,0,0,SSL_STRONG_MASK
},
194 {0,SSL_TXT_MEDIUM
,0, 0,SSL_MEDIUM
, 0,0,0,0,SSL_STRONG_MASK
},
195 {0,SSL_TXT_HIGH
, 0, 0, SSL_HIGH
, 0,0,0,0,SSL_STRONG_MASK
},
198 void ssl_load_ciphers(void)
200 ssl_cipher_methods
[SSL_ENC_DES_IDX
]=
201 EVP_get_cipherbyname(SN_des_cbc
);
202 ssl_cipher_methods
[SSL_ENC_3DES_IDX
]=
203 EVP_get_cipherbyname(SN_des_ede3_cbc
);
204 ssl_cipher_methods
[SSL_ENC_RC4_IDX
]=
205 EVP_get_cipherbyname(SN_rc4
);
206 ssl_cipher_methods
[SSL_ENC_RC2_IDX
]=
207 EVP_get_cipherbyname(SN_rc2_cbc
);
208 #ifndef OPENSSL_NO_IDEA
209 ssl_cipher_methods
[SSL_ENC_IDEA_IDX
]=
210 EVP_get_cipherbyname(SN_idea_cbc
);
212 ssl_cipher_methods
[SSL_ENC_IDEA_IDX
]= NULL
;
214 ssl_cipher_methods
[SSL_ENC_AES128_IDX
]=
215 EVP_get_cipherbyname(SN_aes_128_cbc
);
216 ssl_cipher_methods
[SSL_ENC_AES256_IDX
]=
217 EVP_get_cipherbyname(SN_aes_256_cbc
);
219 ssl_digest_methods
[SSL_MD_MD5_IDX
]=
220 EVP_get_digestbyname(SN_md5
);
221 ssl_digest_methods
[SSL_MD_SHA1_IDX
]=
222 EVP_get_digestbyname(SN_sha1
);
226 #ifndef OPENSSL_NO_COMP
228 static int sk_comp_cmp(const SSL_COMP
* const *a
,
229 const SSL_COMP
* const *b
)
231 return((*a
)->id
-(*b
)->id
);
234 static void load_builtin_compressions(void)
236 if (ssl_comp_methods
!= NULL
)
239 CRYPTO_w_lock(CRYPTO_LOCK_SSL
);
240 if (ssl_comp_methods
== NULL
)
242 SSL_COMP
*comp
= NULL
;
245 ssl_comp_methods
=sk_SSL_COMP_new(sk_comp_cmp
);
246 if (ssl_comp_methods
!= NULL
)
248 comp
=(SSL_COMP
*)OPENSSL_malloc(sizeof(SSL_COMP
));
251 comp
->method
=COMP_zlib();
253 && comp
->method
->type
== NID_undef
)
257 comp
->id
=SSL_COMP_ZLIB_IDX
;
258 comp
->name
=comp
->method
->name
;
259 sk_SSL_COMP_push(ssl_comp_methods
,comp
);
265 CRYPTO_w_unlock(CRYPTO_LOCK_SSL
);
269 int ssl_cipher_get_evp(const SSL_SESSION
*s
, const EVP_CIPHER
**enc
,
270 const EVP_MD
**md
, SSL_COMP
**comp
)
276 if (c
== NULL
) return(0);
280 #ifndef OPENSSL_NO_COMP
281 load_builtin_compressions();
285 ctmp
.id
=s
->compress_meth
;
286 if (ssl_comp_methods
!= NULL
)
288 i
=sk_SSL_COMP_find(ssl_comp_methods
,&ctmp
);
290 *comp
=sk_SSL_COMP_value(ssl_comp_methods
,i
);
296 if ((enc
== NULL
) || (md
== NULL
)) return(0);
298 switch (c
->algorithms
& SSL_ENC_MASK
)
321 case 128: i
=SSL_ENC_AES128_IDX
; break;
322 case 256: i
=SSL_ENC_AES256_IDX
; break;
323 default: i
=-1; break;
331 if ((i
< 0) || (i
> SSL_ENC_NUM_IDX
))
335 if (i
== SSL_ENC_NULL_IDX
)
338 *enc
=ssl_cipher_methods
[i
];
341 switch (c
->algorithms
& SSL_MAC_MASK
)
353 if ((i
< 0) || (i
> SSL_MD_NUM_IDX
))
356 *md
=ssl_digest_methods
[i
];
358 if ((*enc
!= NULL
) && (*md
!= NULL
))
364 #define ITEM_SEP(a) \
365 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
367 static void ll_append_tail(CIPHER_ORDER
**head
, CIPHER_ORDER
*curr
,
370 if (curr
== *tail
) return;
373 if (curr
->prev
!= NULL
)
374 curr
->prev
->next
=curr
->next
;
375 if (curr
->next
!= NULL
) /* should always be true */
376 curr
->next
->prev
=curr
->prev
;
383 static unsigned long ssl_cipher_get_disabled(void)
388 #ifdef OPENSSL_NO_RSA
389 mask
|= SSL_aRSA
|SSL_kRSA
;
391 #ifdef OPENSSL_NO_DSA
395 mask
|= SSL_kDHr
|SSL_kDHd
|SSL_kEDH
|SSL_aDH
;
397 #ifdef OPENSSL_NO_KRB5
398 mask
|= SSL_kKRB5
|SSL_aKRB5
;
400 #ifdef OPENSSL_NO_ECDH
401 mask
|= SSL_kECDH
|SSL_kECDHE
;
403 #ifdef OPENSSL_NO_PSK
406 #ifdef SSL_FORBID_ENULL
410 mask
|= (ssl_cipher_methods
[SSL_ENC_DES_IDX
] == NULL
) ? SSL_DES
:0;
411 mask
|= (ssl_cipher_methods
[SSL_ENC_3DES_IDX
] == NULL
) ? SSL_3DES
:0;
412 mask
|= (ssl_cipher_methods
[SSL_ENC_RC4_IDX
] == NULL
) ? SSL_RC4
:0;
413 mask
|= (ssl_cipher_methods
[SSL_ENC_RC2_IDX
] == NULL
) ? SSL_RC2
:0;
414 mask
|= (ssl_cipher_methods
[SSL_ENC_IDEA_IDX
] == NULL
) ? SSL_IDEA
:0;
415 mask
|= (ssl_cipher_methods
[SSL_ENC_eFZA_IDX
] == NULL
) ? SSL_eFZA
:0;
416 mask
|= (ssl_cipher_methods
[SSL_ENC_AES128_IDX
] == NULL
) ? SSL_AES
:0;
418 mask
|= (ssl_digest_methods
[SSL_MD_MD5_IDX
] == NULL
) ? SSL_MD5
:0;
419 mask
|= (ssl_digest_methods
[SSL_MD_SHA1_IDX
] == NULL
) ? SSL_SHA1
:0;
424 static void ssl_cipher_collect_ciphers(const SSL_METHOD
*ssl_method
,
425 int num_of_ciphers
, unsigned long mask
, CIPHER_ORDER
*co_list
,
426 CIPHER_ORDER
**head_p
, CIPHER_ORDER
**tail_p
)
432 * We have num_of_ciphers descriptions compiled in, depending on the
433 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
434 * These will later be sorted in a linked list with at most num
438 /* Get the initial list of ciphers */
439 co_list_num
= 0; /* actual count of ciphers */
440 for (i
= 0; i
< num_of_ciphers
; i
++)
442 c
= ssl_method
->get_cipher(i
);
443 /* drop those that use any of that is not available */
444 if ((c
!= NULL
) && c
->valid
&& !(c
->algorithms
& mask
))
446 co_list
[co_list_num
].cipher
= c
;
447 co_list
[co_list_num
].next
= NULL
;
448 co_list
[co_list_num
].prev
= NULL
;
449 co_list
[co_list_num
].active
= 0;
452 printf("\t%d: %s %lx %lx\n",i
,c
->name
,c
->id
,c
->algorithms
);
453 #endif /* KSSL_DEBUG */
455 if (!sk_push(ca_list,(char *)c)) goto err;
461 * Prepare linked list from list entries
463 for (i
= 1; i
< co_list_num
- 1; i
++)
465 co_list
[i
].prev
= &(co_list
[i
-1]);
466 co_list
[i
].next
= &(co_list
[i
+1]);
470 (*head_p
) = &(co_list
[0]);
471 (*head_p
)->prev
= NULL
;
472 (*head_p
)->next
= &(co_list
[1]);
473 (*tail_p
) = &(co_list
[co_list_num
- 1]);
474 (*tail_p
)->prev
= &(co_list
[co_list_num
- 2]);
475 (*tail_p
)->next
= NULL
;
479 static void ssl_cipher_collect_aliases(SSL_CIPHER
**ca_list
,
480 int num_of_group_aliases
, unsigned long mask
,
483 CIPHER_ORDER
*ciph_curr
;
484 SSL_CIPHER
**ca_curr
;
488 * First, add the real ciphers as already collected
492 while (ciph_curr
!= NULL
)
494 *ca_curr
= ciph_curr
->cipher
;
496 ciph_curr
= ciph_curr
->next
;
500 * Now we add the available ones from the cipher_aliases[] table.
501 * They represent either an algorithm, that must be fully
502 * supported (not match any bit in mask) or represent a cipher
503 * strength value (will be added in any case because algorithms=0).
505 for (i
= 0; i
< num_of_group_aliases
; i
++)
507 if ((i
== 0) || /* always fetch "ALL" */
508 !(cipher_aliases
[i
].algorithms
& mask
))
510 *ca_curr
= (SSL_CIPHER
*)(cipher_aliases
+ i
);
515 *ca_curr
= NULL
; /* end of list */
518 static void ssl_cipher_apply_rule(unsigned long algorithms
, unsigned long mask
,
519 unsigned long algo_strength
, unsigned long mask_strength
,
520 int rule
, int strength_bits
, CIPHER_ORDER
*co_list
,
521 CIPHER_ORDER
**head_p
, CIPHER_ORDER
**tail_p
)
523 CIPHER_ORDER
*head
, *tail
, *curr
, *curr2
, *tail2
;
525 unsigned long ma
, ma_s
;
528 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n",
529 rule
, algorithms
, mask
, algo_strength
, mask_strength
,
533 curr
= head
= *head_p
;
535 tail2
= tail
= *tail_p
;
538 if ((curr
== NULL
) || (curr
== tail2
)) break;
545 * Selection criteria is either the number of strength_bits
546 * or the algorithm used.
548 if (strength_bits
== -1)
550 ma
= mask
& cp
->algorithms
;
551 ma_s
= mask_strength
& cp
->algo_strength
;
554 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp
->name
, cp
->algorithms
, cp
->algo_strength
, mask
, mask_strength
);
555 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma
, ma_s
, ma
&algorithms
, ma_s
&algo_strength
);
558 * Select: if none of the mask bit was met from the
559 * cipher or not all of the bits were met, the
560 * selection does not apply.
562 if (((ma
== 0) && (ma_s
== 0)) ||
563 ((ma
& algorithms
) != ma
) ||
564 ((ma_s
& algo_strength
) != ma_s
))
565 continue; /* does not apply */
567 else if (strength_bits
!= cp
->strength_bits
)
568 continue; /* does not apply */
571 printf("Action = %d\n", rule
);
574 /* add the cipher if it has not been added yet. */
575 if (rule
== CIPHER_ADD
)
579 ll_append_tail(&head
, curr
, &tail
);
583 /* Move the added cipher to this location */
584 else if (rule
== CIPHER_ORD
)
588 ll_append_tail(&head
, curr
, &tail
);
591 else if (rule
== CIPHER_DEL
)
593 else if (rule
== CIPHER_KILL
)
598 curr
->prev
->next
= curr
->next
;
602 if (curr
->next
!= NULL
)
603 curr
->next
->prev
= curr
->prev
;
604 if (curr
->prev
!= NULL
)
605 curr
->prev
->next
= curr
->next
;
615 static int ssl_cipher_strength_sort(CIPHER_ORDER
*co_list
,
616 CIPHER_ORDER
**head_p
,
617 CIPHER_ORDER
**tail_p
)
619 int max_strength_bits
, i
, *number_uses
;
623 * This routine sorts the ciphers with descending strength. The sorting
624 * must keep the pre-sorted sequence, so we apply the normal sorting
625 * routine as '+' movement to the end of the list.
627 max_strength_bits
= 0;
632 (curr
->cipher
->strength_bits
> max_strength_bits
))
633 max_strength_bits
= curr
->cipher
->strength_bits
;
637 number_uses
= OPENSSL_malloc((max_strength_bits
+ 1) * sizeof(int));
640 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT
,ERR_R_MALLOC_FAILURE
);
643 memset(number_uses
, 0, (max_strength_bits
+ 1) * sizeof(int));
646 * Now find the strength_bits values actually used
652 number_uses
[curr
->cipher
->strength_bits
]++;
656 * Go through the list of used strength_bits values in descending
659 for (i
= max_strength_bits
; i
>= 0; i
--)
660 if (number_uses
[i
] > 0)
661 ssl_cipher_apply_rule(0, 0, 0, 0, CIPHER_ORD
, i
,
662 co_list
, head_p
, tail_p
);
664 OPENSSL_free(number_uses
);
668 static int ssl_cipher_process_rulestr(const char *rule_str
,
669 CIPHER_ORDER
*co_list
, CIPHER_ORDER
**head_p
,
670 CIPHER_ORDER
**tail_p
, SSL_CIPHER
**ca_list
)
672 unsigned long algorithms
, mask
, algo_strength
, mask_strength
;
673 const char *l
, *start
, *buf
;
674 int j
, multi
, found
, rule
, retval
, ok
, buflen
;
686 { rule
= CIPHER_DEL
; l
++; }
688 { rule
= CIPHER_ORD
; l
++; }
690 { rule
= CIPHER_KILL
; l
++; }
692 { rule
= CIPHER_SPECIAL
; l
++; }
694 { rule
= CIPHER_ADD
; }
702 algorithms
= mask
= algo_strength
= mask_strength
= 0;
710 #ifndef CHARSET_EBCDIC
711 while ( ((ch
>= 'A') && (ch
<= 'Z')) ||
712 ((ch
>= '0') && (ch
<= '9')) ||
713 ((ch
>= 'a') && (ch
<= 'z')) ||
716 while ( isalnum(ch
) || (ch
== '-'))
726 * We hit something we cannot deal with,
727 * it is no command or separator nor
728 * alphanumeric, so we call this an error.
730 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
731 SSL_R_INVALID_COMMAND
);
737 if (rule
== CIPHER_SPECIAL
)
739 found
= 0; /* unused -- avoid compiler warning */
740 break; /* special treatment */
743 /* check for multi-part specification */
753 * Now search for the cipher alias in the ca_list. Be careful
754 * with the strncmp, because the "buflen" limitation
755 * will make the rule "ADH:SOME" and the cipher
756 * "ADH-MY-CIPHER" look like a match for buflen=3.
757 * So additionally check whether the cipher name found
758 * has the correct length. We can save a strlen() call:
759 * just checking for the '\0' at the right place is
760 * sufficient, we have to strncmp() anyway. (We cannot
761 * use strcmp(), because buf is not '\0' terminated.)
766 if (!strncmp(buf
, ca_list
[j
]->name
, buflen
) &&
767 (ca_list
[j
]->name
[buflen
] == '\0'))
776 break; /* ignore this entry */
779 * 1 - any old restrictions apply outside new mask
780 * 2 - any new restrictions apply outside old mask
781 * 3 - enforce old & new where masks intersect
783 algorithms
= (algorithms
& ~ca_list
[j
]->mask
) | /* 1 */
784 (ca_list
[j
]->algorithms
& ~mask
) | /* 2 */
785 (algorithms
& ca_list
[j
]->algorithms
); /* 3 */
786 mask
|= ca_list
[j
]->mask
;
787 algo_strength
= (algo_strength
& ~ca_list
[j
]->mask_strength
) |
788 (ca_list
[j
]->algo_strength
& ~mask_strength
) |
789 (algo_strength
& ca_list
[j
]->algo_strength
);
790 mask_strength
|= ca_list
[j
]->mask_strength
;
796 * Ok, we have the rule, now apply it
798 if (rule
== CIPHER_SPECIAL
)
799 { /* special command */
802 !strncmp(buf
, "STRENGTH", 8))
803 ok
= ssl_cipher_strength_sort(co_list
,
806 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR
,
807 SSL_R_INVALID_COMMAND
);
811 * We do not support any "multi" options
812 * together with "@", so throw away the
813 * rest of the command, if any left, until
814 * end or ':' is found.
816 while ((*l
!= '\0') && ITEM_SEP(*l
))
821 ssl_cipher_apply_rule(algorithms
, mask
,
822 algo_strength
, mask_strength
, rule
, -1,
823 co_list
, head_p
, tail_p
);
827 while ((*l
!= '\0') && ITEM_SEP(*l
))
830 if (*l
== '\0') break; /* done */
836 STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*ssl_method
,
837 STACK_OF(SSL_CIPHER
) **cipher_list
,
838 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
839 const char *rule_str
)
841 int ok
, num_of_ciphers
, num_of_alias_max
, num_of_group_aliases
;
842 unsigned long disabled_mask
;
843 STACK_OF(SSL_CIPHER
) *cipherstack
, *tmp_cipher_list
;
845 CIPHER_ORDER
*co_list
= NULL
, *head
= NULL
, *tail
= NULL
, *curr
;
846 SSL_CIPHER
**ca_list
= NULL
;
849 * Return with error if nothing to do.
851 if (rule_str
== NULL
|| cipher_list
== NULL
|| cipher_list_by_id
== NULL
)
855 * To reduce the work to do we only want to process the compiled
856 * in algorithms, so we first get the mask of disabled ciphers.
858 disabled_mask
= ssl_cipher_get_disabled();
861 * Now we have to collect the available ciphers from the compiled
862 * in ciphers. We cannot get more than the number compiled in, so
863 * it is used for allocation.
865 num_of_ciphers
= ssl_method
->num_ciphers();
867 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers
);
868 #endif /* KSSL_DEBUG */
869 co_list
= (CIPHER_ORDER
*)OPENSSL_malloc(sizeof(CIPHER_ORDER
) * num_of_ciphers
);
872 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
,ERR_R_MALLOC_FAILURE
);
873 return(NULL
); /* Failure */
876 ssl_cipher_collect_ciphers(ssl_method
, num_of_ciphers
, disabled_mask
,
877 co_list
, &head
, &tail
);
880 * We also need cipher aliases for selecting based on the rule_str.
881 * There might be two types of entries in the rule_str: 1) names
882 * of ciphers themselves 2) aliases for groups of ciphers.
883 * For 1) we need the available ciphers and for 2) the cipher
884 * groups of cipher_aliases added together in one list (otherwise
885 * we would be happy with just the cipher_aliases table).
887 num_of_group_aliases
= sizeof(cipher_aliases
) / sizeof(SSL_CIPHER
);
888 num_of_alias_max
= num_of_ciphers
+ num_of_group_aliases
+ 1;
890 (SSL_CIPHER
**)OPENSSL_malloc(sizeof(SSL_CIPHER
*) * num_of_alias_max
);
893 OPENSSL_free(co_list
);
894 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST
,ERR_R_MALLOC_FAILURE
);
895 return(NULL
); /* Failure */
897 ssl_cipher_collect_aliases(ca_list
, num_of_group_aliases
, disabled_mask
,
901 * If the rule_string begins with DEFAULT, apply the default rule
902 * before using the (possibly available) additional rules.
906 if (strncmp(rule_str
,"DEFAULT",7) == 0)
908 ok
= ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST
,
909 co_list
, &head
, &tail
, ca_list
);
915 if (ok
&& (strlen(rule_p
) > 0))
916 ok
= ssl_cipher_process_rulestr(rule_p
, co_list
, &head
, &tail
,
919 OPENSSL_free(ca_list
); /* Not needed anymore */
922 { /* Rule processing failure */
923 OPENSSL_free(co_list
);
927 * Allocate new "cipherstack" for the result, return with error
928 * if we cannot get one.
930 if ((cipherstack
= sk_SSL_CIPHER_new_null()) == NULL
)
932 OPENSSL_free(co_list
);
937 * The cipher selection for the list is done. The ciphers are added
938 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
940 for (curr
= head
; curr
!= NULL
; curr
= curr
->next
)
944 sk_SSL_CIPHER_push(cipherstack
, curr
->cipher
);
946 printf("<%s>\n",curr
->cipher
->name
);
950 OPENSSL_free(co_list
); /* Not needed any longer */
952 tmp_cipher_list
= sk_SSL_CIPHER_dup(cipherstack
);
953 if (tmp_cipher_list
== NULL
)
955 sk_SSL_CIPHER_free(cipherstack
);
958 if (*cipher_list
!= NULL
)
959 sk_SSL_CIPHER_free(*cipher_list
);
960 *cipher_list
= cipherstack
;
961 if (*cipher_list_by_id
!= NULL
)
962 sk_SSL_CIPHER_free(*cipher_list_by_id
);
963 *cipher_list_by_id
= tmp_cipher_list
;
964 sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id
,ssl_cipher_ptr_id_cmp
);
969 char *SSL_CIPHER_description(SSL_CIPHER
*cipher
, char *buf
, int len
)
971 int is_export
,pkl
,kl
;
972 const char *ver
,*exp_str
;
973 const char *kx
,*au
,*enc
,*mac
;
974 unsigned long alg
,alg2
,alg_s
;
976 static const char *format
="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n";
978 static const char *format
="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
979 #endif /* KSSL_DEBUG */
981 alg
=cipher
->algorithms
;
982 alg_s
=cipher
->algo_strength
;
983 alg2
=cipher
->algorithm2
;
985 is_export
=SSL_C_IS_EXPORT(cipher
);
986 pkl
=SSL_C_EXPORT_PKEYLENGTH(cipher
);
987 kl
=SSL_C_EXPORT_KEYLENGTH(cipher
);
988 exp_str
=is_export
?" export":"";
992 else if (alg
& SSL_SSLV3
)
997 switch (alg
&SSL_MKEY_MASK
)
1000 kx
=is_export
?(pkl
== 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1008 case SSL_kKRB5
: /* VRS */
1009 case SSL_KRB5
: /* VRS */
1016 kx
=is_export
?(pkl
== 512 ? "DH(512)" : "DH(1024)"):"DH";
1020 kx
=is_export
?"ECDH(<=163)":"ECDH";
1029 switch (alg
&SSL_AUTH_MASK
)
1040 case SSL_aKRB5
: /* VRS */
1041 case SSL_KRB5
: /* VRS */
1059 switch (alg
&SSL_ENC_MASK
)
1062 enc
=(is_export
&& kl
== 5)?"DES(40)":"DES(56)";
1068 enc
=is_export
?(kl
== 5 ? "RC4(40)" : "RC4(56)")
1069 :((alg2
&SSL2_CF_8_BYTE_ENC
)?"RC4(64)":"RC4(128)");
1072 enc
=is_export
?(kl
== 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1084 switch(cipher
->strength_bits
)
1086 case 128: enc
="AES(128)"; break;
1087 case 192: enc
="AES(192)"; break;
1088 case 256: enc
="AES(256)"; break;
1089 default: enc
="AES(?""?""?)"; break;
1097 switch (alg
&SSL_MAC_MASK
)
1113 buf
=OPENSSL_malloc(len
);
1114 if (buf
== NULL
) return("OPENSSL_malloc Error");
1117 return("Buffer too small");
1120 BIO_snprintf(buf
,len
,format
,cipher
->name
,ver
,kx
,au
,enc
,mac
,exp_str
,alg
);
1122 BIO_snprintf(buf
,len
,format
,cipher
->name
,ver
,kx
,au
,enc
,mac
,exp_str
);
1123 #endif /* KSSL_DEBUG */
1127 char *SSL_CIPHER_get_version(const SSL_CIPHER
*c
)
1131 if (c
== NULL
) return("(NONE)");
1132 i
=(int)(c
->id
>>24L);
1134 return("TLSv1/SSLv3");
1141 /* return the actual cipher being used */
1142 const char *SSL_CIPHER_get_name(const SSL_CIPHER
*c
)
1149 /* number of bits for symmetric cipher */
1150 int SSL_CIPHER_get_bits(const SSL_CIPHER
*c
, int *alg_bits
)
1156 if (alg_bits
!= NULL
) *alg_bits
= c
->alg_bits
;
1157 ret
= c
->strength_bits
;
1162 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
)
1167 if ((n
== 0) || (sk
== NULL
)) return(NULL
);
1168 nn
=sk_SSL_COMP_num(sk
);
1169 for (i
=0; i
<nn
; i
++)
1171 ctmp
=sk_SSL_COMP_value(sk
,i
);
1178 #ifdef OPENSSL_NO_COMP
1179 void *SSL_COMP_get_compression_methods(void)
1183 int SSL_COMP_add_compression_method(int id
, void *cm
)
1188 const char *SSL_COMP_get_name(const void *comp
)
1193 STACK_OF(SSL_COMP
) *SSL_COMP_get_compression_methods(void)
1195 load_builtin_compressions();
1196 return(ssl_comp_methods
);
1199 int SSL_COMP_add_compression_method(int id
, COMP_METHOD
*cm
)
1203 if (cm
== NULL
|| cm
->type
== NID_undef
)
1206 /* According to draft-ietf-tls-compression-04.txt, the
1207 compression number ranges should be the following:
1209 0 to 63: methods defined by the IETF
1210 64 to 192: external party methods assigned by IANA
1211 193 to 255: reserved for private use */
1212 if (id
< 193 || id
> 255)
1214 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE
);
1219 comp
=(SSL_COMP
*)OPENSSL_malloc(sizeof(SSL_COMP
));
1222 load_builtin_compressions();
1223 if (ssl_comp_methods
1224 && !sk_SSL_COMP_find(ssl_comp_methods
,comp
))
1228 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,SSL_R_DUPLICATE_COMPRESSION_ID
);
1231 else if ((ssl_comp_methods
== NULL
)
1232 || !sk_SSL_COMP_push(ssl_comp_methods
,comp
))
1236 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD
,ERR_R_MALLOC_FAILURE
);
1246 const char *SSL_COMP_get_name(const COMP_METHOD
*comp
)