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_NUM_IDX 9
131 #define SSL_ENC_CAMELLIA128_IDX 9
132 #define SSL_ENC_CAMELLIA256_IDX 10
133 #undef SSL_ENC_NUM_IDX
134 #define SSL_ENC_NUM_IDX 11
137 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={
138 NULL,NULL,NULL,NULL,NULL,NULL,
141 #define SSL_COMP_NULL_IDX 0
142 #define SSL_COMP_ZLIB_IDX 1
143 #define SSL_COMP_NUM_IDX 2
145 static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL;
147 #define SSL_MD_MD5_IDX 0
148 #define SSL_MD_SHA1_IDX 1
149 #define SSL_MD_NUM_IDX 2
150 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={
155 #define CIPHER_KILL 2
158 #define CIPHER_SPECIAL 5
160 typedef struct cipher_order_st
165 struct cipher_order_st *next,*prev;
168 static const SSL_CIPHER cipher_aliases[]={
169 /* Don't include eNULL unless specifically enabled. */
170 /* Don't include ECC in ALL because these ciphers are not yet official. */
171 {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 */
172 /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */
173 {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, /* COMPLEMENT OF ALL */
174 {0,SSL_TXT_CMPDEF,0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK,0},
175 {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0}, /* VRS Kerberos5 */
176 {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0},
177 {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0},
178 {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0},
179 {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0},
180 {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,0,0,0,SSL_MKEY_MASK,0},
181 {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0},
182 {0,SSL_TXT_ECC, 0,(SSL_kECDH|SSL_kECDHE), 0,0,0,0,SSL_MKEY_MASK,0},
183 {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0},
184 {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0}, /* VRS Kerberos5 */
185 {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0},
186 {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0},
187 {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,0,0,0,SSL_AUTH_MASK,0},
188 {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0},
189 {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0},
190 {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0},
192 {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0},
193 {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0},
194 {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0},
195 {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0},
196 #ifndef OPENSSL_NO_IDEA
197 {0,SSL_TXT_IDEA,0,SSL_IDEA, 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);
252 ssl_digest_methods[SSL_MD_MD5_IDX]=
253 EVP_get_digestbyname(SN_md5);
254 ssl_digest_methods[SSL_MD_SHA1_IDX]=
255 EVP_get_digestbyname(SN_sha1);
259 #ifndef OPENSSL_NO_COMP
261 static int sk_comp_cmp(const SSL_COMP * const *a,
262 const SSL_COMP * const *b)
264 return((*a)->id-(*b)->id);
267 static void load_builtin_compressions(void)
269 int got_write_lock = 0;
271 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
272 if (ssl_comp_methods == NULL)
274 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
275 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
278 if (ssl_comp_methods == NULL)
280 SSL_COMP *comp = NULL;
283 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp);
284 if (ssl_comp_methods != NULL)
286 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
289 comp->method=COMP_zlib();
291 && comp->method->type == NID_undef)
295 comp->id=SSL_COMP_ZLIB_IDX;
296 comp->name=comp->method->name;
297 sk_SSL_COMP_push(ssl_comp_methods,comp);
306 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
308 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
312 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
313 const EVP_MD **md, SSL_COMP **comp)
319 if (c == NULL) return(0);
323 #ifndef OPENSSL_NO_COMP
324 load_builtin_compressions();
328 ctmp.id=s->compress_meth;
329 if (ssl_comp_methods != NULL)
331 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
333 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
339 if ((enc == NULL) || (md == NULL)) return(0);
341 switch (c->algorithms & SSL_ENC_MASK)
364 case 128: i=SSL_ENC_AES128_IDX; break;
365 case 256: i=SSL_ENC_AES256_IDX; break;
366 default: i=-1; break;
372 case 128: i=SSL_ENC_CAMELLIA128_IDX; break;
373 case 256: i=SSL_ENC_CAMELLIA256_IDX; break;
374 default: i=-1; break;
383 if ((i < 0) || (i > SSL_ENC_NUM_IDX))
387 if (i == SSL_ENC_NULL_IDX)
390 *enc=ssl_cipher_methods[i];
393 switch (c->algorithms & SSL_MAC_MASK)
405 if ((i < 0) || (i > SSL_MD_NUM_IDX))
408 *md=ssl_digest_methods[i];
410 if ((*enc != NULL) && (*md != NULL))
416 #define ITEM_SEP(a) \
417 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
419 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
422 if (curr == *tail) return;
425 if (curr->prev != NULL)
426 curr->prev->next=curr->next;
427 if (curr->next != NULL) /* should always be true */
428 curr->next->prev=curr->prev;
435 static unsigned long ssl_cipher_get_disabled(void)
440 #ifdef OPENSSL_NO_RSA
441 mask |= SSL_aRSA|SSL_kRSA;
443 #ifdef OPENSSL_NO_DSA
447 mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH;
449 #ifdef OPENSSL_NO_KRB5
450 mask |= SSL_kKRB5|SSL_aKRB5;
452 #ifdef OPENSSL_NO_ECDH
453 mask |= SSL_kECDH|SSL_kECDHE;
455 #ifdef SSL_FORBID_ENULL
459 mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0;
460 mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0;
461 mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0;
462 mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0;
463 mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0;
464 mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0;
465 mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0;
466 mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0;
468 mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0;
469 mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0;
474 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
475 int num_of_ciphers, unsigned long mask, CIPHER_ORDER *co_list,
476 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
482 * We have num_of_ciphers descriptions compiled in, depending on the
483 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
484 * These will later be sorted in a linked list with at most num
488 /* Get the initial list of ciphers */
489 co_list_num = 0; /* actual count of ciphers */
490 for (i = 0; i < num_of_ciphers; i++)
492 c = ssl_method->get_cipher(i);
493 /* drop those that use any of that is not available */
494 if ((c != NULL) && c->valid && !(c->algorithms & mask))
496 co_list[co_list_num].cipher = c;
497 co_list[co_list_num].next = NULL;
498 co_list[co_list_num].prev = NULL;
499 co_list[co_list_num].active = 0;
502 printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms);
503 #endif /* KSSL_DEBUG */
505 if (!sk_push(ca_list,(char *)c)) goto err;
511 * Prepare linked list from list entries
513 for (i = 1; i < co_list_num - 1; i++)
515 co_list[i].prev = &(co_list[i-1]);
516 co_list[i].next = &(co_list[i+1]);
520 (*head_p) = &(co_list[0]);
521 (*head_p)->prev = NULL;
522 (*head_p)->next = &(co_list[1]);
523 (*tail_p) = &(co_list[co_list_num - 1]);
524 (*tail_p)->prev = &(co_list[co_list_num - 2]);
525 (*tail_p)->next = NULL;
529 static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list,
530 int num_of_group_aliases, unsigned long mask,
533 CIPHER_ORDER *ciph_curr;
534 SSL_CIPHER **ca_curr;
538 * First, add the real ciphers as already collected
542 while (ciph_curr != NULL)
544 *ca_curr = ciph_curr->cipher;
546 ciph_curr = ciph_curr->next;
550 * Now we add the available ones from the cipher_aliases[] table.
551 * They represent either an algorithm, that must be fully
552 * supported (not match any bit in mask) or represent a cipher
553 * strength value (will be added in any case because algorithms=0).
555 for (i = 0; i < num_of_group_aliases; i++)
557 if ((i == 0) || /* always fetch "ALL" */
558 !(cipher_aliases[i].algorithms & mask))
560 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
565 *ca_curr = NULL; /* end of list */
568 static void ssl_cipher_apply_rule(unsigned long cipher_id,
569 unsigned long algorithms, unsigned long mask,
570 unsigned long algo_strength, unsigned long mask_strength,
571 int rule, int strength_bits, CIPHER_ORDER *co_list,
572 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
574 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2;
576 unsigned long ma, ma_s;
579 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n",
580 rule, algorithms, mask, algo_strength, mask_strength,
584 curr = head = *head_p;
586 tail2 = tail = *tail_p;
589 if ((curr == NULL) || (curr == tail2)) break;
595 /* If explicit cipher suite match that one only */
599 if (cp->id != cipher_id)
604 * Selection criteria is either the number of strength_bits
605 * or the algorithm used.
607 else if (strength_bits == -1)
609 ma = mask & cp->algorithms;
610 ma_s = mask_strength & cp->algo_strength;
613 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength);
614 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength);
617 * Select: if none of the mask bit was met from the
618 * cipher or not all of the bits were met, the
619 * selection does not apply.
621 if (((ma == 0) && (ma_s == 0)) ||
622 ((ma & algorithms) != ma) ||
623 ((ma_s & algo_strength) != ma_s))
624 continue; /* does not apply */
626 else if (strength_bits != cp->strength_bits)
627 continue; /* does not apply */
630 printf("Action = %d\n", rule);
633 /* add the cipher if it has not been added yet. */
634 if (rule == CIPHER_ADD)
638 int add_this_cipher = 1;
640 if (((cp->algorithms & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0))
642 /* Make sure "ECCdraft" ciphersuites are activated only if
643 * *explicitly* requested, but not implicitly (such as
644 * as part of the "AES" alias). */
646 add_this_cipher = (mask & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0 || cipher_id != 0;
651 ll_append_tail(&head, curr, &tail);
656 /* Move the added cipher to this location */
657 else if (rule == CIPHER_ORD)
661 ll_append_tail(&head, curr, &tail);
664 else if (rule == CIPHER_DEL)
666 else if (rule == CIPHER_KILL)
671 curr->prev->next = curr->next;
675 if (curr->next != NULL)
676 curr->next->prev = curr->prev;
677 if (curr->prev != NULL)
678 curr->prev->next = curr->next;
688 static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list,
689 CIPHER_ORDER **head_p,
690 CIPHER_ORDER **tail_p)
692 int max_strength_bits, i, *number_uses;
696 * This routine sorts the ciphers with descending strength. The sorting
697 * must keep the pre-sorted sequence, so we apply the normal sorting
698 * routine as '+' movement to the end of the list.
700 max_strength_bits = 0;
705 (curr->cipher->strength_bits > max_strength_bits))
706 max_strength_bits = curr->cipher->strength_bits;
710 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
713 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE);
716 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
719 * Now find the strength_bits values actually used
725 number_uses[curr->cipher->strength_bits]++;
729 * Go through the list of used strength_bits values in descending
732 for (i = max_strength_bits; i >= 0; i--)
733 if (number_uses[i] > 0)
734 ssl_cipher_apply_rule(0, 0, 0, 0, 0, CIPHER_ORD, i,
735 co_list, head_p, tail_p);
737 OPENSSL_free(number_uses);
741 static int ssl_cipher_process_rulestr(const char *rule_str,
742 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p,
743 CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list)
745 unsigned long algorithms, mask, algo_strength, mask_strength;
746 const char *l, *start, *buf;
747 int j, multi, found, rule, retval, ok, buflen;
748 unsigned long cipher_id = 0;
760 { rule = CIPHER_DEL; l++; }
762 { rule = CIPHER_ORD; l++; }
764 { rule = CIPHER_KILL; l++; }
766 { rule = CIPHER_SPECIAL; l++; }
768 { rule = CIPHER_ADD; }
776 algorithms = mask = algo_strength = mask_strength = 0;
784 #ifndef CHARSET_EBCDIC
785 while ( ((ch >= 'A') && (ch <= 'Z')) ||
786 ((ch >= '0') && (ch <= '9')) ||
787 ((ch >= 'a') && (ch <= 'z')) ||
790 while ( isalnum(ch) || (ch == '-'))
800 * We hit something we cannot deal with,
801 * it is no command or separator nor
802 * alphanumeric, so we call this an error.
804 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
805 SSL_R_INVALID_COMMAND);
811 if (rule == CIPHER_SPECIAL)
813 found = 0; /* unused -- avoid compiler warning */
814 break; /* special treatment */
817 /* check for multi-part specification */
827 * Now search for the cipher alias in the ca_list. Be careful
828 * with the strncmp, because the "buflen" limitation
829 * will make the rule "ADH:SOME" and the cipher
830 * "ADH-MY-CIPHER" look like a match for buflen=3.
831 * So additionally check whether the cipher name found
832 * has the correct length. We can save a strlen() call:
833 * just checking for the '\0' at the right place is
834 * sufficient, we have to strncmp() anyway. (We cannot
835 * use strcmp(), because buf is not '\0' terminated.)
841 if (!strncmp(buf, ca_list[j]->name, buflen) &&
842 (ca_list[j]->name[buflen] == '\0'))
851 break; /* ignore this entry */
853 if (ca_list[j]->valid)
855 cipher_id = ca_list[j]->id;
860 * 1 - any old restrictions apply outside new mask
861 * 2 - any new restrictions apply outside old mask
862 * 3 - enforce old & new where masks intersect
864 algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */
865 (ca_list[j]->algorithms & ~mask) | /* 2 */
866 (algorithms & ca_list[j]->algorithms); /* 3 */
867 mask |= ca_list[j]->mask;
868 algo_strength = (algo_strength & ~ca_list[j]->mask_strength) |
869 (ca_list[j]->algo_strength & ~mask_strength) |
870 (algo_strength & ca_list[j]->algo_strength);
871 mask_strength |= ca_list[j]->mask_strength;
877 * Ok, we have the rule, now apply it
879 if (rule == CIPHER_SPECIAL)
880 { /* special command */
883 !strncmp(buf, "STRENGTH", 8))
884 ok = ssl_cipher_strength_sort(co_list,
887 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
888 SSL_R_INVALID_COMMAND);
892 * We do not support any "multi" options
893 * together with "@", so throw away the
894 * rest of the command, if any left, until
895 * end or ':' is found.
897 while ((*l != '\0') && ITEM_SEP(*l))
902 ssl_cipher_apply_rule(cipher_id, algorithms, mask,
903 algo_strength, mask_strength, rule, -1,
904 co_list, head_p, tail_p);
908 while ((*l != '\0') && ITEM_SEP(*l))
911 if (*l == '\0') break; /* done */
917 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
918 STACK_OF(SSL_CIPHER) **cipher_list,
919 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
920 const char *rule_str)
922 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
923 unsigned long disabled_mask;
924 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
926 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
927 SSL_CIPHER **ca_list = NULL;
930 * Return with error if nothing to do.
932 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
936 * To reduce the work to do we only want to process the compiled
937 * in algorithms, so we first get the mask of disabled ciphers.
939 disabled_mask = ssl_cipher_get_disabled();
942 * Now we have to collect the available ciphers from the compiled
943 * in ciphers. We cannot get more than the number compiled in, so
944 * it is used for allocation.
946 num_of_ciphers = ssl_method->num_ciphers();
948 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
949 #endif /* KSSL_DEBUG */
950 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
953 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
954 return(NULL); /* Failure */
957 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask,
958 co_list, &head, &tail);
961 * We also need cipher aliases for selecting based on the rule_str.
962 * There might be two types of entries in the rule_str: 1) names
963 * of ciphers themselves 2) aliases for groups of ciphers.
964 * For 1) we need the available ciphers and for 2) the cipher
965 * groups of cipher_aliases added together in one list (otherwise
966 * we would be happy with just the cipher_aliases table).
968 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
969 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
971 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
974 OPENSSL_free(co_list);
975 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
976 return(NULL); /* Failure */
978 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, disabled_mask,
982 * If the rule_string begins with DEFAULT, apply the default rule
983 * before using the (possibly available) additional rules.
987 if (strncmp(rule_str,"DEFAULT",7) == 0)
989 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
990 co_list, &head, &tail, ca_list);
996 if (ok && (strlen(rule_p) > 0))
997 ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail,
1000 OPENSSL_free(ca_list); /* Not needed anymore */
1003 { /* Rule processing failure */
1004 OPENSSL_free(co_list);
1008 * Allocate new "cipherstack" for the result, return with error
1009 * if we cannot get one.
1011 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL)
1013 OPENSSL_free(co_list);
1018 * The cipher selection for the list is done. The ciphers are added
1019 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1021 for (curr = head; curr != NULL; curr = curr->next)
1025 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1027 printf("<%s>\n",curr->cipher->name);
1031 OPENSSL_free(co_list); /* Not needed any longer */
1033 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1034 if (tmp_cipher_list == NULL)
1036 sk_SSL_CIPHER_free(cipherstack);
1039 if (*cipher_list != NULL)
1040 sk_SSL_CIPHER_free(*cipher_list);
1041 *cipher_list = cipherstack;
1042 if (*cipher_list_by_id != NULL)
1043 sk_SSL_CIPHER_free(*cipher_list_by_id);
1044 *cipher_list_by_id = tmp_cipher_list;
1045 sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
1047 return(cipherstack);
1050 char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len)
1052 int is_export,pkl,kl;
1053 const char *ver,*exp_str;
1054 const char *kx,*au,*enc,*mac;
1055 unsigned long alg,alg2,alg_s;
1057 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n";
1059 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1060 #endif /* KSSL_DEBUG */
1062 alg=cipher->algorithms;
1063 alg_s=cipher->algo_strength;
1064 alg2=cipher->algorithm2;
1066 is_export=SSL_C_IS_EXPORT(cipher);
1067 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1068 kl=SSL_C_EXPORT_KEYLENGTH(cipher);
1069 exp_str=is_export?" export":"";
1071 if (alg & SSL_SSLV2)
1073 else if (alg & SSL_SSLV3)
1078 switch (alg&SSL_MKEY_MASK)
1081 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1089 case SSL_kKRB5: /* VRS */
1090 case SSL_KRB5: /* VRS */
1097 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1101 kx=is_export?"ECDH(<=163)":"ECDH";
1107 switch (alg&SSL_AUTH_MASK)
1118 case SSL_aKRB5: /* VRS */
1119 case SSL_KRB5: /* VRS */
1134 switch (alg&SSL_ENC_MASK)
1137 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
1143 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1144 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1147 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1159 switch(cipher->strength_bits)
1161 case 128: enc="AES(128)"; break;
1162 case 192: enc="AES(192)"; break;
1163 case 256: enc="AES(256)"; break;
1164 default: enc="AES(?""?""?)"; break;
1168 switch(cipher->strength_bits)
1170 case 128: enc="Camellia(128)"; break;
1171 case 256: enc="Camellia(256)"; break;
1172 default: enc="Camellia(?""?""?)"; break;
1181 switch (alg&SSL_MAC_MASK)
1197 buf=OPENSSL_malloc(len);
1198 if (buf == NULL) return("OPENSSL_malloc Error");
1201 return("Buffer too small");
1204 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg);
1206 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str);
1207 #endif /* KSSL_DEBUG */
1211 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1215 if (c == NULL) return("(NONE)");
1216 i=(int)(c->id>>24L);
1218 return("TLSv1/SSLv3");
1225 /* return the actual cipher being used */
1226 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1233 /* number of bits for symmetric cipher */
1234 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1240 if (alg_bits != NULL) *alg_bits = c->alg_bits;
1241 ret = c->strength_bits;
1246 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1251 if ((n == 0) || (sk == NULL)) return(NULL);
1252 nn=sk_SSL_COMP_num(sk);
1253 for (i=0; i<nn; i++)
1255 ctmp=sk_SSL_COMP_value(sk,i);
1262 #ifdef OPENSSL_NO_COMP
1263 void *SSL_COMP_get_compression_methods(void)
1267 int SSL_COMP_add_compression_method(int id, void *cm)
1272 const char *SSL_COMP_get_name(const void *comp)
1277 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1279 load_builtin_compressions();
1280 return(ssl_comp_methods);
1283 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1287 if (cm == NULL || cm->type == NID_undef)
1290 /* According to draft-ietf-tls-compression-04.txt, the
1291 compression number ranges should be the following:
1293 0 to 63: methods defined by the IETF
1294 64 to 192: external party methods assigned by IANA
1295 193 to 255: reserved for private use */
1296 if (id < 193 || id > 255)
1298 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1303 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1306 load_builtin_compressions();
1307 if (ssl_comp_methods
1308 && !sk_SSL_COMP_find(ssl_comp_methods,comp))
1312 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID);
1315 else if ((ssl_comp_methods == NULL)
1316 || !sk_SSL_COMP_push(ssl_comp_methods,comp))
1320 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
1330 const char *SSL_COMP_get_name(const COMP_METHOD *comp)