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_NULL_IDX 5
154 #define SSL_ENC_AES128_IDX 6
155 #define SSL_ENC_AES256_IDX 7
156 #define SSL_ENC_CAMELLIA128_IDX 8
157 #define SSL_ENC_CAMELLIA256_IDX 9
158 #define SSL_ENC_NUM_IDX 10
161 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={
162 NULL,NULL,NULL,NULL,NULL,NULL,
165 #define SSL_COMP_NULL_IDX 0
166 #define SSL_COMP_ZLIB_IDX 1
167 #define SSL_COMP_NUM_IDX 2
169 static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL;
171 #define SSL_MD_MD5_IDX 0
172 #define SSL_MD_SHA1_IDX 1
173 #define SSL_MD_NUM_IDX 2
174 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={
179 #define CIPHER_KILL 2
182 #define CIPHER_SPECIAL 5
184 typedef struct cipher_order_st
189 struct cipher_order_st *next,*prev;
192 static const SSL_CIPHER cipher_aliases[]={
193 /* "ALL" doesn't include eNULL (must be specifically enabled) */
194 {0,SSL_TXT_ALL, 0,SSL_ALL & ~SSL_eNULL, SSL_ALL ,0,0,0,SSL_ALL,SSL_ALL},
195 /* "COMPLEMENTOFALL" */
196 {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0},
198 /* "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in ALL!) */
199 {0,SSL_TXT_CMPDEF,0,SSL_ADH|SSL_AECDH|(SSL_ENC_MASK & ~SSL_eNULL), 0,0,0,0,SSL_AUTH_MASK|SSL_ENC_MASK,0},
201 /* Single key exchange bits
202 * (some of these are multiple key exchange algs according to the RFCs,
203 * e.g. kEDH combines DHE_DSS and DHE_RSA) */
204 {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0},
205 {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0}, /* no such ciphersuites supported! */
206 {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0}, /* no such ciphersuites supported! */
207 {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0},
208 {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0},
209 {0,SSL_TXT_kECDHr,0,SSL_kECDHr,0,0,0,0,SSL_MKEY_MASK,0},
210 {0,SSL_TXT_kECDHe,0,SSL_kECDHe,0,0,0,0,SSL_MKEY_MASK,0},
211 {0,SSL_TXT_kEECDH,0,SSL_kEECDH,0,0,0,0,SSL_MKEY_MASK,0},
212 {0,SSL_TXT_kPSK,0,SSL_kPSK, 0,0,0,0,SSL_MKEY_MASK,0},
214 /* More key exchange aliases (combined bits) */
215 {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0},
216 {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0},
217 {0,SSL_TXT_kECDH,0,SSL_kECDH,0,0,0,0,SSL_MKEY_MASK,0},
218 {0,SSL_TXT_ECDH,0,SSL_ECDH, 0,0,0,0,SSL_MKEY_MASK,0},
219 {0,SSL_TXT_EECDH,0,SSL_EECDH,0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0},
221 /* Single authentication bits */
222 {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0},
223 {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0},
224 {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0},
225 {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0},
226 {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0}, /* no such ciphersuites supported! */
227 {0,SSL_TXT_aECDH, 0,SSL_aECDH,0,0,0,0,SSL_AUTH_MASK,0},
228 {0,SSL_TXT_aECDSA, 0,SSL_aECDSA,0,0,0,0,SSL_AUTH_MASK,0},
229 {0,SSL_TXT_aPSK,0,SSL_aPSK, 0,0,0,0,SSL_AUTH_MASK,0},
231 /* More authentication aliases */
232 {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0},
233 {0,SSL_TXT_ECDSA,0,SSL_ECDSA,0,0,0,0,SSL_AUTH_MASK,0},
235 /* Single encryption bits */
236 {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0},
237 {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0},
238 {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0},
239 {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0},
240 #ifndef OPENSSL_NO_IDEA
241 {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0},
243 {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0},
244 {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0},
245 {0,SSL_TXT_CAMELLIA, 0,SSL_CAMELLIA, 0,0,0,0,SSL_ENC_MASK,0},
247 /* Single MAC bits */
248 {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0},
249 {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0},
250 {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0},
253 {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0},
254 {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
255 {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
256 {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
257 {0,SSL_TXT_AECDH,0,SSL_AECDH,0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
258 {0,SSL_TXT_PSK, 0,SSL_PSK, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
260 {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0},
261 {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0},
262 {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0},
264 {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK},
265 {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK},
266 {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK},
267 {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK},
268 {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK},
269 {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK},
270 {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK},
273 void ssl_load_ciphers(void)
275 ssl_cipher_methods[SSL_ENC_DES_IDX]=
276 EVP_get_cipherbyname(SN_des_cbc);
277 ssl_cipher_methods[SSL_ENC_3DES_IDX]=
278 EVP_get_cipherbyname(SN_des_ede3_cbc);
279 ssl_cipher_methods[SSL_ENC_RC4_IDX]=
280 EVP_get_cipherbyname(SN_rc4);
281 ssl_cipher_methods[SSL_ENC_RC2_IDX]=
282 EVP_get_cipherbyname(SN_rc2_cbc);
283 #ifndef OPENSSL_NO_IDEA
284 ssl_cipher_methods[SSL_ENC_IDEA_IDX]=
285 EVP_get_cipherbyname(SN_idea_cbc);
287 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL;
289 ssl_cipher_methods[SSL_ENC_AES128_IDX]=
290 EVP_get_cipherbyname(SN_aes_128_cbc);
291 ssl_cipher_methods[SSL_ENC_AES256_IDX]=
292 EVP_get_cipherbyname(SN_aes_256_cbc);
293 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]=
294 EVP_get_cipherbyname(SN_camellia_128_cbc);
295 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]=
296 EVP_get_cipherbyname(SN_camellia_256_cbc);
298 ssl_digest_methods[SSL_MD_MD5_IDX]=
299 EVP_get_digestbyname(SN_md5);
300 ssl_digest_methods[SSL_MD_SHA1_IDX]=
301 EVP_get_digestbyname(SN_sha1);
305 #ifndef OPENSSL_NO_COMP
307 static int sk_comp_cmp(const SSL_COMP * const *a,
308 const SSL_COMP * const *b)
310 return((*a)->id-(*b)->id);
313 static void load_builtin_compressions(void)
315 int got_write_lock = 0;
317 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
318 if (ssl_comp_methods == NULL)
320 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
321 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
324 if (ssl_comp_methods == NULL)
326 SSL_COMP *comp = NULL;
329 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp);
330 if (ssl_comp_methods != NULL)
332 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
335 comp->method=COMP_zlib();
337 && comp->method->type == NID_undef)
341 comp->id=SSL_COMP_ZLIB_IDX;
342 comp->name=comp->method->name;
343 sk_SSL_COMP_push(ssl_comp_methods,comp);
352 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
354 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
358 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
359 const EVP_MD **md, SSL_COMP **comp)
365 if (c == NULL) return(0);
369 #ifndef OPENSSL_NO_COMP
370 load_builtin_compressions();
374 ctmp.id=s->compress_meth;
375 if (ssl_comp_methods != NULL)
377 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
379 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
385 if ((enc == NULL) || (md == NULL)) return(0);
387 switch (c->algorithms & SSL_ENC_MASK)
410 case 128: i=SSL_ENC_AES128_IDX; break;
411 case 256: i=SSL_ENC_AES256_IDX; break;
412 default: i=-1; break;
418 case 128: i=SSL_ENC_CAMELLIA128_IDX; break;
419 case 256: i=SSL_ENC_CAMELLIA256_IDX; break;
420 default: i=-1; break;
429 if ((i < 0) || (i > SSL_ENC_NUM_IDX))
433 if (i == SSL_ENC_NULL_IDX)
436 *enc=ssl_cipher_methods[i];
439 switch (c->algorithms & SSL_MAC_MASK)
451 if ((i < 0) || (i > SSL_MD_NUM_IDX))
454 *md=ssl_digest_methods[i];
456 if ((*enc != NULL) && (*md != NULL))
462 #define ITEM_SEP(a) \
463 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
465 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
468 if (curr == *tail) return;
471 if (curr->prev != NULL)
472 curr->prev->next=curr->next;
473 if (curr->next != NULL) /* should always be true */
474 curr->next->prev=curr->prev;
481 static unsigned long ssl_cipher_get_disabled(void)
483 unsigned long mask = 0;
485 #ifdef OPENSSL_NO_RSA
486 mask |= SSL_aRSA|SSL_kRSA;
488 #ifdef OPENSSL_NO_DSA
492 mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH;
494 #ifdef OPENSSL_NO_KRB5
495 mask |= SSL_kKRB5|SSL_aKRB5;
497 #ifdef OPENSSL_NO_ECDSA
500 #ifdef OPENSSL_NO_ECDH
501 mask |= SSL_kECDHe|SSL_kECDHr|SSL_aECDH;
503 #ifdef OPENSSL_NO_PSK
506 #ifdef SSL_FORBID_ENULL
510 mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0;
511 mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0;
512 mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0;
513 mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0;
514 mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0;
515 mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0;
516 mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0;
518 mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0;
519 mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0;
524 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
525 int num_of_ciphers, unsigned long mask, CIPHER_ORDER *co_list,
526 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
532 * We have num_of_ciphers descriptions compiled in, depending on the
533 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
534 * These will later be sorted in a linked list with at most num
538 /* Get the initial list of ciphers */
539 co_list_num = 0; /* actual count of ciphers */
540 for (i = 0; i < num_of_ciphers; i++)
542 c = ssl_method->get_cipher(i);
543 /* drop those that use any of that is not available */
544 if ((c != NULL) && c->valid && !(c->algorithms & mask))
546 co_list[co_list_num].cipher = c;
547 co_list[co_list_num].next = NULL;
548 co_list[co_list_num].prev = NULL;
549 co_list[co_list_num].active = 0;
552 printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms);
553 #endif /* KSSL_DEBUG */
555 if (!sk_push(ca_list,(char *)c)) goto err;
561 * Prepare linked list from list entries
563 for (i = 1; i < co_list_num - 1; i++)
565 co_list[i].prev = &(co_list[i-1]);
566 co_list[i].next = &(co_list[i+1]);
570 (*head_p) = &(co_list[0]);
571 (*head_p)->prev = NULL;
572 (*head_p)->next = &(co_list[1]);
573 (*tail_p) = &(co_list[co_list_num - 1]);
574 (*tail_p)->prev = &(co_list[co_list_num - 2]);
575 (*tail_p)->next = NULL;
579 static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list,
580 int num_of_group_aliases, unsigned long mask,
583 CIPHER_ORDER *ciph_curr;
584 SSL_CIPHER **ca_curr;
586 unsigned long enabled_mask = ~mask;
589 * First, add the real ciphers as already collected
593 while (ciph_curr != NULL)
595 *ca_curr = ciph_curr->cipher;
597 ciph_curr = ciph_curr->next;
601 * Now we add the available ones from the cipher_aliases[] table.
602 * They represent either one or more algorithms, some of which
603 * in any affected category must be supported (set in enabled_mask),
604 * or represent a cipher strength value (will be added in any case because algorithms=0).
606 for (i = 0; i < num_of_group_aliases; i++)
608 int algorithms = cipher_aliases[i].algorithms;
610 if (SSL_MKEY_MASK & algorithms)
612 if ((SSL_MKEY_MASK & algorithms & enabled_mask) == 0)
616 if (SSL_AUTH_MASK & algorithms)
618 if ((SSL_AUTH_MASK & algorithms & enabled_mask) == 0)
622 if (SSL_ENC_MASK & algorithms)
624 if ((SSL_ENC_MASK & algorithms & enabled_mask) == 0)
628 if (SSL_MAC_MASK & algorithms)
630 if ((SSL_MAC_MASK & algorithms & enabled_mask) == 0)
634 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
638 *ca_curr = NULL; /* end of list */
641 static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_version,
642 unsigned long algorithms, unsigned long mask,
643 unsigned long algo_strength, unsigned long mask_strength,
644 int rule, int strength_bits,
645 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
647 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2;
649 unsigned long ma, ma_s;
652 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n",
653 rule, algorithms, mask, algo_strength, mask_strength,
657 curr = head = *head_p;
659 tail2 = tail = *tail_p;
662 if ((curr == NULL) || (curr == tail2)) break;
668 /* If explicit cipher suite, match only that one for its own protocol version.
669 * Usual selection criteria will be used for similar ciphersuites from other version! */
671 if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version)
673 if (cp->id != cipher_id)
678 * Selection criteria is either the number of strength_bits
679 * or the algorithm used.
681 else if (strength_bits == -1)
683 ma = mask & cp->algorithms;
684 ma_s = mask_strength & cp->algo_strength;
687 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength);
688 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength);
691 * Select: if none of the mask bit was met from the
692 * cipher or not all of the bits were met, the
693 * selection does not apply.
695 if (((ma == 0) && (ma_s == 0)) ||
696 ((ma & algorithms) != ma) ||
697 ((ma_s & algo_strength) != ma_s))
698 continue; /* does not apply */
700 else if (strength_bits != cp->strength_bits)
701 continue; /* does not apply */
704 printf("Action = %d\n", rule);
707 /* add the cipher if it has not been added yet. */
708 if (rule == CIPHER_ADD)
712 ll_append_tail(&head, curr, &tail);
716 /* Move the added cipher to this location */
717 else if (rule == CIPHER_ORD)
721 ll_append_tail(&head, curr, &tail);
724 else if (rule == CIPHER_DEL)
726 else if (rule == CIPHER_KILL)
731 curr->prev->next = curr->next;
735 if (curr->next != NULL)
736 curr->next->prev = curr->prev;
737 if (curr->prev != NULL)
738 curr->prev->next = curr->next;
748 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
749 CIPHER_ORDER **tail_p)
751 int max_strength_bits, i, *number_uses;
755 * This routine sorts the ciphers with descending strength. The sorting
756 * must keep the pre-sorted sequence, so we apply the normal sorting
757 * routine as '+' movement to the end of the list.
759 max_strength_bits = 0;
764 (curr->cipher->strength_bits > max_strength_bits))
765 max_strength_bits = curr->cipher->strength_bits;
769 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
772 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE);
775 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
778 * Now find the strength_bits values actually used
784 number_uses[curr->cipher->strength_bits]++;
788 * Go through the list of used strength_bits values in descending
791 for (i = max_strength_bits; i >= 0; i--)
792 if (number_uses[i] > 0)
793 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i,
796 OPENSSL_free(number_uses);
800 static int ssl_cipher_process_rulestr(const char *rule_str,
801 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p,
802 SSL_CIPHER **ca_list)
804 unsigned long algorithms, mask, algo_strength, mask_strength;
805 const char *l, *start, *buf;
806 int j, multi, found, rule, retval, ok, buflen;
807 unsigned long cipher_id = 0, ssl_version = 0;
819 { rule = CIPHER_DEL; l++; }
821 { rule = CIPHER_ORD; l++; }
823 { rule = CIPHER_KILL; l++; }
825 { rule = CIPHER_SPECIAL; l++; }
827 { rule = CIPHER_ADD; }
835 algorithms = mask = algo_strength = mask_strength = 0;
843 #ifndef CHARSET_EBCDIC
844 while ( ((ch >= 'A') && (ch <= 'Z')) ||
845 ((ch >= '0') && (ch <= '9')) ||
846 ((ch >= 'a') && (ch <= 'z')) ||
849 while ( isalnum(ch) || (ch == '-'))
859 * We hit something we cannot deal with,
860 * it is no command or separator nor
861 * alphanumeric, so we call this an error.
863 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
864 SSL_R_INVALID_COMMAND);
870 if (rule == CIPHER_SPECIAL)
872 found = 0; /* unused -- avoid compiler warning */
873 break; /* special treatment */
876 /* check for multi-part specification */
886 * Now search for the cipher alias in the ca_list. Be careful
887 * with the strncmp, because the "buflen" limitation
888 * will make the rule "ADH:SOME" and the cipher
889 * "ADH-MY-CIPHER" look like a match for buflen=3.
890 * So additionally check whether the cipher name found
891 * has the correct length. We can save a strlen() call:
892 * just checking for the '\0' at the right place is
893 * sufficient, we have to strncmp() anyway. (We cannot
894 * use strcmp(), because buf is not '\0' terminated.)
901 if (!strncmp(buf, ca_list[j]->name, buflen) &&
902 (ca_list[j]->name[buflen] == '\0'))
911 break; /* ignore this entry */
914 * 1 - any old restrictions apply outside new mask
915 * 2 - any new restrictions apply outside old mask
916 * 3 - enforce old & new where masks intersect
918 algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */
919 (ca_list[j]->algorithms & ~mask) | /* 2 */
920 (algorithms & ca_list[j]->algorithms); /* 3 */
921 mask |= ca_list[j]->mask;
922 algo_strength = (algo_strength & ~ca_list[j]->mask_strength) |
923 (ca_list[j]->algo_strength & ~mask_strength) |
924 (algo_strength & ca_list[j]->algo_strength);
925 mask_strength |= ca_list[j]->mask_strength;
927 /* explicit ciphersuite found */
928 if (ca_list[j]->valid)
930 cipher_id = ca_list[j]->id;
931 ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK;
939 * Ok, we have the rule, now apply it
941 if (rule == CIPHER_SPECIAL)
942 { /* special command */
945 !strncmp(buf, "STRENGTH", 8))
946 ok = ssl_cipher_strength_sort(head_p, tail_p);
948 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
949 SSL_R_INVALID_COMMAND);
953 * We do not support any "multi" options
954 * together with "@", so throw away the
955 * rest of the command, if any left, until
956 * end or ':' is found.
958 while ((*l != '\0') && ITEM_SEP(*l))
963 ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask,
964 algo_strength, mask_strength, rule, -1,
969 while ((*l != '\0') && ITEM_SEP(*l))
972 if (*l == '\0') break; /* done */
978 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
979 STACK_OF(SSL_CIPHER) **cipher_list,
980 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
981 const char *rule_str)
983 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
984 unsigned long disabled_mask;
985 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
987 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
988 SSL_CIPHER **ca_list = NULL;
991 * Return with error if nothing to do.
993 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
997 * To reduce the work to do we only want to process the compiled
998 * in algorithms, so we first get the mask of disabled ciphers.
1000 disabled_mask = ssl_cipher_get_disabled();
1003 * Now we have to collect the available ciphers from the compiled
1004 * in ciphers. We cannot get more than the number compiled in, so
1005 * it is used for allocation.
1007 num_of_ciphers = ssl_method->num_ciphers();
1009 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
1010 #endif /* KSSL_DEBUG */
1011 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
1012 if (co_list == NULL)
1014 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1015 return(NULL); /* Failure */
1018 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask,
1019 co_list, &head, &tail);
1022 * We also need cipher aliases for selecting based on the rule_str.
1023 * There might be two types of entries in the rule_str: 1) names
1024 * of ciphers themselves 2) aliases for groups of ciphers.
1025 * For 1) we need the available ciphers and for 2) the cipher
1026 * groups of cipher_aliases added together in one list (otherwise
1027 * we would be happy with just the cipher_aliases table).
1029 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
1030 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1032 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
1033 if (ca_list == NULL)
1035 OPENSSL_free(co_list);
1036 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1037 return(NULL); /* Failure */
1039 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, disabled_mask,
1043 * If the rule_string begins with DEFAULT, apply the default rule
1044 * before using the (possibly available) additional rules.
1048 if (strncmp(rule_str,"DEFAULT",7) == 0)
1050 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1051 &head, &tail, ca_list);
1057 if (ok && (strlen(rule_p) > 0))
1058 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list);
1060 OPENSSL_free(ca_list); /* Not needed anymore */
1063 { /* Rule processing failure */
1064 OPENSSL_free(co_list);
1068 * Allocate new "cipherstack" for the result, return with error
1069 * if we cannot get one.
1071 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL)
1073 OPENSSL_free(co_list);
1078 * The cipher selection for the list is done. The ciphers are added
1079 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1081 for (curr = head; curr != NULL; curr = curr->next)
1085 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1087 printf("<%s>\n",curr->cipher->name);
1091 OPENSSL_free(co_list); /* Not needed any longer */
1093 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1094 if (tmp_cipher_list == NULL)
1096 sk_SSL_CIPHER_free(cipherstack);
1099 if (*cipher_list != NULL)
1100 sk_SSL_CIPHER_free(*cipher_list);
1101 *cipher_list = cipherstack;
1102 if (*cipher_list_by_id != NULL)
1103 sk_SSL_CIPHER_free(*cipher_list_by_id);
1104 *cipher_list_by_id = tmp_cipher_list;
1105 sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
1107 return(cipherstack);
1110 char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len)
1112 int is_export,pkl,kl;
1113 const char *ver,*exp_str;
1114 const char *kx,*au,*enc,*mac;
1115 unsigned long alg,alg2,alg_s;
1117 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n";
1119 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1120 #endif /* KSSL_DEBUG */
1122 alg=cipher->algorithms;
1123 alg_s=cipher->algo_strength;
1124 alg2=cipher->algorithm2;
1126 is_export=SSL_C_IS_EXPORT(cipher);
1127 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1128 kl=SSL_C_EXPORT_KEYLENGTH(cipher);
1129 exp_str=is_export?" export":"";
1131 if (alg & SSL_SSLV2)
1133 else if (alg & SSL_SSLV3)
1138 switch (alg&SSL_MKEY_MASK)
1141 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1153 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1171 switch (alg&SSL_AUTH_MASK)
1202 switch (alg&SSL_ENC_MASK)
1205 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
1211 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1212 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1215 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1224 switch(cipher->strength_bits)
1226 case 128: enc="AES(128)"; break;
1227 case 192: enc="AES(192)"; break;
1228 case 256: enc="AES(256)"; break;
1229 default: enc="AES(?""?""?)"; break;
1233 switch(cipher->strength_bits)
1235 case 128: enc="Camellia(128)"; break;
1236 case 256: enc="Camellia(256)"; break;
1237 default: enc="Camellia(?""?""?)"; break;
1246 switch (alg&SSL_MAC_MASK)
1262 buf=OPENSSL_malloc(len);
1263 if (buf == NULL) return("OPENSSL_malloc Error");
1266 return("Buffer too small");
1269 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg);
1271 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str);
1272 #endif /* KSSL_DEBUG */
1276 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1280 if (c == NULL) return("(NONE)");
1281 i=(int)(c->id>>24L);
1283 return("TLSv1/SSLv3");
1290 /* return the actual cipher being used */
1291 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1298 /* number of bits for symmetric cipher */
1299 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1305 if (alg_bits != NULL) *alg_bits = c->alg_bits;
1306 ret = c->strength_bits;
1311 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1316 if ((n == 0) || (sk == NULL)) return(NULL);
1317 nn=sk_SSL_COMP_num(sk);
1318 for (i=0; i<nn; i++)
1320 ctmp=sk_SSL_COMP_value(sk,i);
1327 #ifdef OPENSSL_NO_COMP
1328 void *SSL_COMP_get_compression_methods(void)
1332 int SSL_COMP_add_compression_method(int id, void *cm)
1337 const char *SSL_COMP_get_name(const void *comp)
1342 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1344 load_builtin_compressions();
1345 return(ssl_comp_methods);
1348 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1352 if (cm == NULL || cm->type == NID_undef)
1355 /* According to draft-ietf-tls-compression-04.txt, the
1356 compression number ranges should be the following:
1358 0 to 63: methods defined by the IETF
1359 64 to 192: external party methods assigned by IANA
1360 193 to 255: reserved for private use */
1361 if (id < 193 || id > 255)
1363 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1368 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1371 load_builtin_compressions();
1372 if (ssl_comp_methods
1373 && !sk_SSL_COMP_find(ssl_comp_methods,comp))
1377 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID);
1380 else if ((ssl_comp_methods == NULL)
1381 || !sk_SSL_COMP_push(ssl_comp_methods,comp))
1385 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
1395 const char *SSL_COMP_get_name(const COMP_METHOD *comp)