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.
116 /* ====================================================================
117 * Copyright 2005 Nokia. All rights reserved.
119 * The portions of the attached software ("Contribution") is developed by
120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
125 * support (see RFC 4279) to OpenSSL.
127 * No patent licenses or other rights except those expressly stated in
128 * the OpenSSL open source license shall be deemed granted or received
129 * expressly, by implication, estoppel, or otherwise.
131 * No assurances are provided by Nokia that the Contribution does not
132 * infringe the patent or other intellectual property rights of any third
133 * party or that the license provides you with all the necessary rights
134 * to make use of the Contribution.
136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
144 #include <openssl/objects.h>
145 #include <openssl/comp.h>
146 #include "ssl_locl.h"
148 #define SSL_ENC_DES_IDX 0
149 #define SSL_ENC_3DES_IDX 1
150 #define SSL_ENC_RC4_IDX 2
151 #define SSL_ENC_RC2_IDX 3
152 #define SSL_ENC_IDEA_IDX 4
153 #define SSL_ENC_eFZA_IDX 5
154 #define SSL_ENC_NULL_IDX 6
155 #define SSL_ENC_AES128_IDX 7
156 #define SSL_ENC_AES256_IDX 8
157 #define SSL_ENC_NUM_IDX 9
158 #define SSL_ENC_CAMELLIA128_IDX 9
159 #define SSL_ENC_CAMELLIA256_IDX 10
160 #undef SSL_ENC_NUM_IDX
161 #define SSL_ENC_NUM_IDX 11
164 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={
165 NULL,NULL,NULL,NULL,NULL,NULL,
168 #define SSL_COMP_NULL_IDX 0
169 #define SSL_COMP_ZLIB_IDX 1
170 #define SSL_COMP_NUM_IDX 2
172 static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL;
174 #define SSL_MD_MD5_IDX 0
175 #define SSL_MD_SHA1_IDX 1
176 #define SSL_MD_NUM_IDX 2
177 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={
182 #define CIPHER_KILL 2
185 #define CIPHER_SPECIAL 5
187 typedef struct cipher_order_st
192 struct cipher_order_st *next,*prev;
195 static const SSL_CIPHER cipher_aliases[]={
196 /* Don't include eNULL unless specifically enabled. */
197 /* Don't include ECC in ALL because these ciphers are not yet official. */
198 {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 */
199 /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */
200 {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, /* COMPLEMENT OF ALL */
201 {0,SSL_TXT_CMPDEF,0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK,0},
202 {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0}, /* VRS Kerberos5 */
203 {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0},
204 {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0},
205 {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0},
206 {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0},
207 {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,0,0,0,SSL_MKEY_MASK,0},
208 {0,SSL_TXT_kPSK,0,SSL_kPSK, 0,0,0,0,SSL_MKEY_MASK,0},
209 {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0},
210 {0,SSL_TXT_ECC, 0,(SSL_kECDH|SSL_kECDHE), 0,0,0,0,SSL_MKEY_MASK,0},
211 {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0},
212 {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0}, /* VRS Kerberos5 */
213 {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0},
214 {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0},
215 {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,0,0,0,SSL_AUTH_MASK,0},
216 {0,SSL_TXT_aPSK,0,SSL_aPSK, 0,0,0,0,SSL_AUTH_MASK,0},
217 {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0},
218 {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0},
219 {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0},
221 {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0},
222 {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0},
223 {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0},
224 {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0},
225 #ifndef OPENSSL_NO_IDEA
226 {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0},
228 {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0},
229 {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,0,0,0,SSL_ENC_MASK,0},
230 {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0},
231 {0,SSL_TXT_CAMELLIA, 0,SSL_CAMELLIA, 0,0,0,0,SSL_ENC_MASK,0},
233 {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0},
234 {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0},
235 {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0},
237 {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0},
238 {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
239 {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
240 {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
241 {0,SSL_TXT_FZA, 0,SSL_FZA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK,0},
242 {0,SSL_TXT_PSK, 0,SSL_PSK, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
244 {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0},
245 {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0},
246 {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0},
248 {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK},
249 {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK},
250 {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK},
251 {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK},
252 {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK},
253 {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK},
254 {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK},
257 void ssl_load_ciphers(void)
259 ssl_cipher_methods[SSL_ENC_DES_IDX]=
260 EVP_get_cipherbyname(SN_des_cbc);
261 ssl_cipher_methods[SSL_ENC_3DES_IDX]=
262 EVP_get_cipherbyname(SN_des_ede3_cbc);
263 ssl_cipher_methods[SSL_ENC_RC4_IDX]=
264 EVP_get_cipherbyname(SN_rc4);
265 ssl_cipher_methods[SSL_ENC_RC2_IDX]=
266 EVP_get_cipherbyname(SN_rc2_cbc);
267 #ifndef OPENSSL_NO_IDEA
268 ssl_cipher_methods[SSL_ENC_IDEA_IDX]=
269 EVP_get_cipherbyname(SN_idea_cbc);
271 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL;
273 ssl_cipher_methods[SSL_ENC_AES128_IDX]=
274 EVP_get_cipherbyname(SN_aes_128_cbc);
275 ssl_cipher_methods[SSL_ENC_AES256_IDX]=
276 EVP_get_cipherbyname(SN_aes_256_cbc);
277 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]=
278 EVP_get_cipherbyname(SN_camellia_128_cbc);
279 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]=
280 EVP_get_cipherbyname(SN_camellia_256_cbc);
282 ssl_digest_methods[SSL_MD_MD5_IDX]=
283 EVP_get_digestbyname(SN_md5);
284 ssl_digest_methods[SSL_MD_SHA1_IDX]=
285 EVP_get_digestbyname(SN_sha1);
289 #ifndef OPENSSL_NO_COMP
291 static int sk_comp_cmp(const SSL_COMP * const *a,
292 const SSL_COMP * const *b)
294 return((*a)->id-(*b)->id);
297 static void load_builtin_compressions(void)
299 int got_write_lock = 0;
301 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
302 if (ssl_comp_methods == NULL)
304 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
305 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
308 if (ssl_comp_methods == NULL)
310 SSL_COMP *comp = NULL;
313 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp);
314 if (ssl_comp_methods != NULL)
316 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
319 comp->method=COMP_zlib();
321 && comp->method->type == NID_undef)
325 comp->id=SSL_COMP_ZLIB_IDX;
326 comp->name=comp->method->name;
327 sk_SSL_COMP_push(ssl_comp_methods,comp);
336 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
338 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
342 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
343 const EVP_MD **md, SSL_COMP **comp)
349 if (c == NULL) return(0);
353 #ifndef OPENSSL_NO_COMP
354 load_builtin_compressions();
358 ctmp.id=s->compress_meth;
359 if (ssl_comp_methods != NULL)
361 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
363 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
369 if ((enc == NULL) || (md == NULL)) return(0);
371 switch (c->algorithms & SSL_ENC_MASK)
394 case 128: i=SSL_ENC_AES128_IDX; break;
395 case 256: i=SSL_ENC_AES256_IDX; break;
396 default: i=-1; break;
402 case 128: i=SSL_ENC_CAMELLIA128_IDX; break;
403 case 256: i=SSL_ENC_CAMELLIA256_IDX; break;
404 default: i=-1; break;
413 if ((i < 0) || (i > SSL_ENC_NUM_IDX))
417 if (i == SSL_ENC_NULL_IDX)
420 *enc=ssl_cipher_methods[i];
423 switch (c->algorithms & SSL_MAC_MASK)
435 if ((i < 0) || (i > SSL_MD_NUM_IDX))
438 *md=ssl_digest_methods[i];
440 if ((*enc != NULL) && (*md != NULL))
446 #define ITEM_SEP(a) \
447 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
449 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
452 if (curr == *tail) return;
455 if (curr->prev != NULL)
456 curr->prev->next=curr->next;
457 if (curr->next != NULL) /* should always be true */
458 curr->next->prev=curr->prev;
465 static unsigned long ssl_cipher_get_disabled(void)
470 #ifdef OPENSSL_NO_RSA
471 mask |= SSL_aRSA|SSL_kRSA;
473 #ifdef OPENSSL_NO_DSA
477 mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH;
479 #ifdef OPENSSL_NO_KRB5
480 mask |= SSL_kKRB5|SSL_aKRB5;
482 #ifdef OPENSSL_NO_ECDH
483 mask |= SSL_kECDH|SSL_kECDHE;
485 #ifdef OPENSSL_NO_PSK
488 #ifdef SSL_FORBID_ENULL
492 mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0;
493 mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0;
494 mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0;
495 mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0;
496 mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0;
497 mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0;
498 mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0;
499 mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0;
501 mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0;
502 mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0;
507 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
508 int num_of_ciphers, unsigned long mask, CIPHER_ORDER *co_list,
509 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
515 * We have num_of_ciphers descriptions compiled in, depending on the
516 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
517 * These will later be sorted in a linked list with at most num
521 /* Get the initial list of ciphers */
522 co_list_num = 0; /* actual count of ciphers */
523 for (i = 0; i < num_of_ciphers; i++)
525 c = ssl_method->get_cipher(i);
526 /* drop those that use any of that is not available */
527 if ((c != NULL) && c->valid && !(c->algorithms & mask))
529 co_list[co_list_num].cipher = c;
530 co_list[co_list_num].next = NULL;
531 co_list[co_list_num].prev = NULL;
532 co_list[co_list_num].active = 0;
535 printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms);
536 #endif /* KSSL_DEBUG */
538 if (!sk_push(ca_list,(char *)c)) goto err;
544 * Prepare linked list from list entries
546 for (i = 1; i < co_list_num - 1; i++)
548 co_list[i].prev = &(co_list[i-1]);
549 co_list[i].next = &(co_list[i+1]);
553 (*head_p) = &(co_list[0]);
554 (*head_p)->prev = NULL;
555 (*head_p)->next = &(co_list[1]);
556 (*tail_p) = &(co_list[co_list_num - 1]);
557 (*tail_p)->prev = &(co_list[co_list_num - 2]);
558 (*tail_p)->next = NULL;
562 static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list,
563 int num_of_group_aliases, unsigned long mask,
566 CIPHER_ORDER *ciph_curr;
567 SSL_CIPHER **ca_curr;
571 * First, add the real ciphers as already collected
575 while (ciph_curr != NULL)
577 *ca_curr = ciph_curr->cipher;
579 ciph_curr = ciph_curr->next;
583 * Now we add the available ones from the cipher_aliases[] table.
584 * They represent either an algorithm, that must be fully
585 * supported (not match any bit in mask) or represent a cipher
586 * strength value (will be added in any case because algorithms=0).
588 for (i = 0; i < num_of_group_aliases; i++)
590 if ((i == 0) || /* always fetch "ALL" */
591 !(cipher_aliases[i].algorithms & mask))
593 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
598 *ca_curr = NULL; /* end of list */
601 static void ssl_cipher_apply_rule(unsigned long cipher_id,
602 unsigned long algorithms, unsigned long mask,
603 unsigned long algo_strength, unsigned long mask_strength,
604 int rule, int strength_bits, CIPHER_ORDER *co_list,
605 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
607 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2;
609 unsigned long ma, ma_s;
612 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n",
613 rule, algorithms, mask, algo_strength, mask_strength,
617 curr = head = *head_p;
619 tail2 = tail = *tail_p;
622 if ((curr == NULL) || (curr == tail2)) break;
628 /* If explicit cipher suite match that one only */
632 if (cp->id != cipher_id)
637 * Selection criteria is either the number of strength_bits
638 * or the algorithm used.
640 else if (strength_bits == -1)
642 ma = mask & cp->algorithms;
643 ma_s = mask_strength & cp->algo_strength;
646 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength);
647 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength);
650 * Select: if none of the mask bit was met from the
651 * cipher or not all of the bits were met, the
652 * selection does not apply.
654 if (((ma == 0) && (ma_s == 0)) ||
655 ((ma & algorithms) != ma) ||
656 ((ma_s & algo_strength) != ma_s))
657 continue; /* does not apply */
659 else if (strength_bits != cp->strength_bits)
660 continue; /* does not apply */
663 printf("Action = %d\n", rule);
666 /* add the cipher if it has not been added yet. */
667 if (rule == CIPHER_ADD)
671 ll_append_tail(&head, curr, &tail);
675 /* Move the added cipher to this location */
676 else if (rule == CIPHER_ORD)
680 ll_append_tail(&head, curr, &tail);
683 else if (rule == CIPHER_DEL)
685 else if (rule == CIPHER_KILL)
690 curr->prev->next = curr->next;
694 if (curr->next != NULL)
695 curr->next->prev = curr->prev;
696 if (curr->prev != NULL)
697 curr->prev->next = curr->next;
707 static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list,
708 CIPHER_ORDER **head_p,
709 CIPHER_ORDER **tail_p)
711 int max_strength_bits, i, *number_uses;
715 * This routine sorts the ciphers with descending strength. The sorting
716 * must keep the pre-sorted sequence, so we apply the normal sorting
717 * routine as '+' movement to the end of the list.
719 max_strength_bits = 0;
724 (curr->cipher->strength_bits > max_strength_bits))
725 max_strength_bits = curr->cipher->strength_bits;
729 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
732 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE);
735 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
738 * Now find the strength_bits values actually used
744 number_uses[curr->cipher->strength_bits]++;
748 * Go through the list of used strength_bits values in descending
751 for (i = max_strength_bits; i >= 0; i--)
752 if (number_uses[i] > 0)
753 ssl_cipher_apply_rule(0, 0, 0, 0, 0, CIPHER_ORD, i,
754 co_list, head_p, tail_p);
756 OPENSSL_free(number_uses);
760 static int ssl_cipher_process_rulestr(const char *rule_str,
761 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p,
762 CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list)
764 unsigned long algorithms, mask, algo_strength, mask_strength;
765 const char *l, *start, *buf;
766 int j, multi, found, rule, retval, ok, buflen;
767 unsigned long cipher_id;
779 { rule = CIPHER_DEL; l++; }
781 { rule = CIPHER_ORD; l++; }
783 { rule = CIPHER_KILL; l++; }
785 { rule = CIPHER_SPECIAL; l++; }
787 { rule = CIPHER_ADD; }
795 algorithms = mask = algo_strength = mask_strength = 0;
803 #ifndef CHARSET_EBCDIC
804 while ( ((ch >= 'A') && (ch <= 'Z')) ||
805 ((ch >= '0') && (ch <= '9')) ||
806 ((ch >= 'a') && (ch <= 'z')) ||
809 while ( isalnum(ch) || (ch == '-'))
819 * We hit something we cannot deal with,
820 * it is no command or separator nor
821 * alphanumeric, so we call this an error.
823 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
824 SSL_R_INVALID_COMMAND);
830 if (rule == CIPHER_SPECIAL)
832 found = 0; /* unused -- avoid compiler warning */
833 break; /* special treatment */
836 /* check for multi-part specification */
846 * Now search for the cipher alias in the ca_list. Be careful
847 * with the strncmp, because the "buflen" limitation
848 * will make the rule "ADH:SOME" and the cipher
849 * "ADH-MY-CIPHER" look like a match for buflen=3.
850 * So additionally check whether the cipher name found
851 * has the correct length. We can save a strlen() call:
852 * just checking for the '\0' at the right place is
853 * sufficient, we have to strncmp() anyway. (We cannot
854 * use strcmp(), because buf is not '\0' terminated.)
860 if (!strncmp(buf, ca_list[j]->name, buflen) &&
861 (ca_list[j]->name[buflen] == '\0'))
870 break; /* ignore this entry */
872 if (ca_list[j]->valid)
874 cipher_id = ca_list[j]->id;
879 * 1 - any old restrictions apply outside new mask
880 * 2 - any new restrictions apply outside old mask
881 * 3 - enforce old & new where masks intersect
883 algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */
884 (ca_list[j]->algorithms & ~mask) | /* 2 */
885 (algorithms & ca_list[j]->algorithms); /* 3 */
886 mask |= ca_list[j]->mask;
887 algo_strength = (algo_strength & ~ca_list[j]->mask_strength) |
888 (ca_list[j]->algo_strength & ~mask_strength) |
889 (algo_strength & ca_list[j]->algo_strength);
890 mask_strength |= ca_list[j]->mask_strength;
896 * Ok, we have the rule, now apply it
898 if (rule == CIPHER_SPECIAL)
899 { /* special command */
902 !strncmp(buf, "STRENGTH", 8))
903 ok = ssl_cipher_strength_sort(co_list,
906 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
907 SSL_R_INVALID_COMMAND);
911 * We do not support any "multi" options
912 * together with "@", so throw away the
913 * rest of the command, if any left, until
914 * end or ':' is found.
916 while ((*l != '\0') && ITEM_SEP(*l))
921 ssl_cipher_apply_rule(cipher_id, algorithms, mask,
922 algo_strength, mask_strength, rule, -1,
923 co_list, head_p, tail_p);
927 while ((*l != '\0') && ITEM_SEP(*l))
930 if (*l == '\0') break; /* done */
936 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
937 STACK_OF(SSL_CIPHER) **cipher_list,
938 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
939 const char *rule_str)
941 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
942 unsigned long disabled_mask;
943 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
945 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
946 SSL_CIPHER **ca_list = NULL;
949 * Return with error if nothing to do.
951 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
955 * To reduce the work to do we only want to process the compiled
956 * in algorithms, so we first get the mask of disabled ciphers.
958 disabled_mask = ssl_cipher_get_disabled();
961 * Now we have to collect the available ciphers from the compiled
962 * in ciphers. We cannot get more than the number compiled in, so
963 * it is used for allocation.
965 num_of_ciphers = ssl_method->num_ciphers();
967 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
968 #endif /* KSSL_DEBUG */
969 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
972 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
973 return(NULL); /* Failure */
976 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask,
977 co_list, &head, &tail);
980 * We also need cipher aliases for selecting based on the rule_str.
981 * There might be two types of entries in the rule_str: 1) names
982 * of ciphers themselves 2) aliases for groups of ciphers.
983 * For 1) we need the available ciphers and for 2) the cipher
984 * groups of cipher_aliases added together in one list (otherwise
985 * we would be happy with just the cipher_aliases table).
987 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
988 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
990 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
993 OPENSSL_free(co_list);
994 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
995 return(NULL); /* Failure */
997 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, disabled_mask,
1001 * If the rule_string begins with DEFAULT, apply the default rule
1002 * before using the (possibly available) additional rules.
1006 if (strncmp(rule_str,"DEFAULT",7) == 0)
1008 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1009 co_list, &head, &tail, ca_list);
1015 if (ok && (strlen(rule_p) > 0))
1016 ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail,
1019 OPENSSL_free(ca_list); /* Not needed anymore */
1022 { /* Rule processing failure */
1023 OPENSSL_free(co_list);
1027 * Allocate new "cipherstack" for the result, return with error
1028 * if we cannot get one.
1030 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL)
1032 OPENSSL_free(co_list);
1037 * The cipher selection for the list is done. The ciphers are added
1038 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1040 for (curr = head; curr != NULL; curr = curr->next)
1044 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1046 printf("<%s>\n",curr->cipher->name);
1050 OPENSSL_free(co_list); /* Not needed any longer */
1052 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1053 if (tmp_cipher_list == NULL)
1055 sk_SSL_CIPHER_free(cipherstack);
1058 if (*cipher_list != NULL)
1059 sk_SSL_CIPHER_free(*cipher_list);
1060 *cipher_list = cipherstack;
1061 if (*cipher_list_by_id != NULL)
1062 sk_SSL_CIPHER_free(*cipher_list_by_id);
1063 *cipher_list_by_id = tmp_cipher_list;
1064 sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
1066 return(cipherstack);
1069 char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len)
1071 int is_export,pkl,kl;
1072 const char *ver,*exp_str;
1073 const char *kx,*au,*enc,*mac;
1074 unsigned long alg,alg2,alg_s;
1076 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n";
1078 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1079 #endif /* KSSL_DEBUG */
1081 alg=cipher->algorithms;
1082 alg_s=cipher->algo_strength;
1083 alg2=cipher->algorithm2;
1085 is_export=SSL_C_IS_EXPORT(cipher);
1086 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1087 kl=SSL_C_EXPORT_KEYLENGTH(cipher);
1088 exp_str=is_export?" export":"";
1090 if (alg & SSL_SSLV2)
1092 else if (alg & SSL_SSLV3)
1097 switch (alg&SSL_MKEY_MASK)
1100 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1108 case SSL_kKRB5: /* VRS */
1109 case SSL_KRB5: /* VRS */
1116 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1120 kx=is_export?"ECDH(<=163)":"ECDH";
1129 switch (alg&SSL_AUTH_MASK)
1140 case SSL_aKRB5: /* VRS */
1141 case SSL_KRB5: /* VRS */
1159 switch (alg&SSL_ENC_MASK)
1162 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
1168 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1169 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1172 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1184 switch(cipher->strength_bits)
1186 case 128: enc="AES(128)"; break;
1187 case 192: enc="AES(192)"; break;
1188 case 256: enc="AES(256)"; break;
1189 default: enc="AES(?""?""?)"; break;
1193 switch(cipher->strength_bits)
1195 case 128: enc="Camellia(128)"; break;
1196 case 256: enc="Camellia(256)"; break;
1197 default: enc="Camellia(?""?""?)"; break;
1206 switch (alg&SSL_MAC_MASK)
1222 buf=OPENSSL_malloc(len);
1223 if (buf == NULL) return("OPENSSL_malloc Error");
1226 return("Buffer too small");
1229 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg);
1231 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str);
1232 #endif /* KSSL_DEBUG */
1236 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1240 if (c == NULL) return("(NONE)");
1241 i=(int)(c->id>>24L);
1243 return("TLSv1/SSLv3");
1250 /* return the actual cipher being used */
1251 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1258 /* number of bits for symmetric cipher */
1259 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1265 if (alg_bits != NULL) *alg_bits = c->alg_bits;
1266 ret = c->strength_bits;
1271 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1276 if ((n == 0) || (sk == NULL)) return(NULL);
1277 nn=sk_SSL_COMP_num(sk);
1278 for (i=0; i<nn; i++)
1280 ctmp=sk_SSL_COMP_value(sk,i);
1287 #ifdef OPENSSL_NO_COMP
1288 void *SSL_COMP_get_compression_methods(void)
1292 int SSL_COMP_add_compression_method(int id, void *cm)
1297 const char *SSL_COMP_get_name(const void *comp)
1302 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1304 load_builtin_compressions();
1305 return(ssl_comp_methods);
1308 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1312 if (cm == NULL || cm->type == NID_undef)
1315 /* According to draft-ietf-tls-compression-04.txt, the
1316 compression number ranges should be the following:
1318 0 to 63: methods defined by the IETF
1319 64 to 192: external party methods assigned by IANA
1320 193 to 255: reserved for private use */
1321 if (id < 193 || id > 255)
1323 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1328 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1331 load_builtin_compressions();
1332 if (ssl_comp_methods
1333 && !sk_SSL_COMP_find(ssl_comp_methods,comp))
1337 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID);
1340 else if ((ssl_comp_methods == NULL)
1341 || !sk_SSL_COMP_push(ssl_comp_methods,comp))
1345 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
1355 const char *SSL_COMP_get_name(const COMP_METHOD *comp)