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) 1998-2007 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_GOST89_IDX 10
159 #define SSL_ENC_NUM_IDX 11
162 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={
163 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
166 #define SSL_COMP_NULL_IDX 0
167 #define SSL_COMP_ZLIB_IDX 1
168 #define SSL_COMP_NUM_IDX 2
170 static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL;
172 #define SSL_MD_MD5_IDX 0
173 #define SSL_MD_SHA1_IDX 1
174 #define SSL_MD_NUM_IDX 2
175 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={
180 #define CIPHER_KILL 2
183 #define CIPHER_SPECIAL 5
185 typedef struct cipher_order_st
190 struct cipher_order_st *next,*prev;
193 static const SSL_CIPHER cipher_aliases[]={
194 /* "ALL" doesn't include eNULL (must be specifically enabled) */
195 {0,SSL_TXT_ALL,0, 0,0,~SSL_eNULL,0,0,0,0,0,0},
196 /* "COMPLEMENTOFALL" */
197 {0,SSL_TXT_CMPALL,0, 0,0,SSL_eNULL,0,0,0,0,0,0},
199 /* "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in ALL!) */
200 {0,SSL_TXT_CMPDEF,0, SSL_kEDH|SSL_kEECDH,SSL_aNULL,~SSL_eNULL,0,0,0,0,0,0},
202 /* key exchange aliases
203 * (some of those using only a single bit here combine
204 * multiple key exchange algs according to the RFCs,
205 * e.g. kEDH combines DHE_DSS and DHE_RSA) */
206 {0,SSL_TXT_kRSA,0, SSL_kRSA, 0,0,0,0,0,0,0,0},
208 {0,SSL_TXT_kDHr,0, SSL_kDHr, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
209 {0,SSL_TXT_kDHd,0, SSL_kDHd, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
210 {0,SSL_TXT_kDH,0, SSL_kDHr|SSL_kDHd,0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
211 {0,SSL_TXT_kEDH,0, SSL_kEDH, 0,0,0,0,0,0,0,0},
212 {0,SSL_TXT_DH,0, SSL_kDHr|SSL_kDHd|SSL_kEDH,0,0,0,0,0,0,0,0},
214 {0,SSL_TXT_kKRB5,0, SSL_kKRB5, 0,0,0,0,0,0,0,0},
216 {0,SSL_TXT_kECDHr,0, SSL_kECDHr,0,0,0,0,0,0,0,0},
217 {0,SSL_TXT_kECDHe,0, SSL_kECDHe,0,0,0,0,0,0,0,0},
218 {0,SSL_TXT_kECDH,0, SSL_kECDHr|SSL_kECDHe,0,0,0,0,0,0,0,0},
219 {0,SSL_TXT_kEECDH,0, SSL_kEECDH,0,0,0,0,0,0,0,0},
220 {0,SSL_TXT_ECDH,0, SSL_kECDHr|SSL_kECDHe|SSL_kEECDH,0,0,0,0,0,0,0,0},
222 {0,SSL_TXT_kPSK,0, SSL_kPSK, 0,0,0,0,0,0,0,0},
225 /* server authentication aliases */
226 {0,SSL_TXT_aRSA,0, 0,SSL_aRSA, 0,0,0,0,0,0,0},
227 {0,SSL_TXT_aDSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0},
228 {0,SSL_TXT_DSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0},
229 {0,SSL_TXT_aKRB5,0, 0,SSL_aKRB5, 0,0,0,0,0,0,0},
230 {0,SSL_TXT_aNULL,0, 0,SSL_aNULL, 0,0,0,0,0,0,0},
231 {0,SSL_TXT_aDH,0, 0,SSL_aDH, 0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
232 {0,SSL_TXT_aECDH,0, 0,SSL_aECDH, 0,0,0,0,0,0,0},
233 {0,SSL_TXT_aECDSA,0, 0,SSL_aECDSA,0,0,0,0,0,0,0},
234 {0,SSL_TXT_ECDSA,0, 0,SSL_aECDSA, 0,0,0,0,0,0,0},
235 {0,SSL_TXT_aPSK,0, 0,SSL_aPSK, 0,0,0,0,0,0,0},
238 /* aliases combining key exchange and server authentication */
239 {0,SSL_TXT_EDH,0, SSL_kEDH,~SSL_aNULL,0,0,0,0,0,0,0},
240 {0,SSL_TXT_EECDH,0, SSL_kEECDH,~SSL_aNULL,0,0,0,0,0,0,0},
241 {0,SSL_TXT_NULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0},
242 {0,SSL_TXT_KRB5,0, SSL_kKRB5,SSL_aKRB5,0,0,0,0,0,0,0},
243 {0,SSL_TXT_RSA,0, SSL_kRSA,SSL_aRSA,0,0,0,0,0,0,0},
244 {0,SSL_TXT_ADH,0, SSL_kEDH,SSL_aNULL,0,0,0,0,0,0,0},
245 {0,SSL_TXT_AECDH,0, SSL_kEECDH,SSL_aNULL,0,0,0,0,0,0,0},
246 {0,SSL_TXT_PSK,0, SSL_kPSK,SSL_aPSK,0,0,0,0,0,0,0},
249 /* symmetric encryption aliases */
250 {0,SSL_TXT_DES,0, 0,0,SSL_DES, 0,0,0,0,0,0},
251 {0,SSL_TXT_3DES,0, 0,0,SSL_3DES, 0,0,0,0,0,0},
252 {0,SSL_TXT_RC4,0, 0,0,SSL_RC4, 0,0,0,0,0,0},
253 {0,SSL_TXT_RC2,0, 0,0,SSL_RC2, 0,0,0,0,0,0},
254 {0,SSL_TXT_IDEA,0, 0,0,SSL_IDEA, 0,0,0,0,0,0},
255 {0,SSL_TXT_eNULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0},
256 {0,SSL_TXT_AES128,0, 0,0,SSL_AES128,0,0,0,0,0,0},
257 {0,SSL_TXT_AES256,0, 0,0,SSL_AES256,0,0,0,0,0,0},
258 {0,SSL_TXT_AES,0, 0,0,SSL_AES128|SSL_AES256,0,0,0,0,0,0},
259 {0,SSL_TXT_CAMELLIA128,0,0,0,SSL_CAMELLIA128,0,0,0,0,0,0},
260 {0,SSL_TXT_CAMELLIA256,0,0,0,SSL_CAMELLIA256,0,0,0,0,0,0},
261 {0,SSL_TXT_CAMELLIA ,0,0,0,SSL_CAMELLIA128|SSL_CAMELLIA256,0,0,0,0,0,0},
264 {0,SSL_TXT_MD5,0, 0,0,0,SSL_MD5, 0,0,0,0,0},
265 {0,SSL_TXT_SHA1,0, 0,0,0,SSL_SHA1, 0,0,0,0,0},
266 {0,SSL_TXT_SHA,0, 0,0,0,SSL_SHA1, 0,0,0,0,0},
268 /* protocol version aliases */
269 {0,SSL_TXT_SSLV2,0, 0,0,0,0,SSL_SSLV2, 0,0,0,0},
270 {0,SSL_TXT_SSLV3,0, 0,0,0,0,SSL_SSLV3, 0,0,0,0},
271 {0,SSL_TXT_TLSV1,0, 0,0,0,0,SSL_TLSV1, 0,0,0,0},
274 {0,SSL_TXT_EXP,0, 0,0,0,0,0,SSL_EXPORT,0,0,0},
275 {0,SSL_TXT_EXPORT,0, 0,0,0,0,0,SSL_EXPORT,0,0,0},
277 /* strength classes */
278 {0,SSL_TXT_EXP40,0, 0,0,0,0,0,SSL_EXP40, 0,0,0},
279 {0,SSL_TXT_EXP56,0, 0,0,0,0,0,SSL_EXP56, 0,0,0},
280 {0,SSL_TXT_LOW,0, 0,0,0,0,0,SSL_LOW, 0,0,0},
281 {0,SSL_TXT_MEDIUM,0, 0,0,0,0,0,SSL_MEDIUM,0,0,0},
282 {0,SSL_TXT_HIGH,0, 0,0,0,0,0,SSL_HIGH, 0,0,0},
285 void ssl_load_ciphers(void)
287 ssl_cipher_methods[SSL_ENC_DES_IDX]=
288 EVP_get_cipherbyname(SN_des_cbc);
289 ssl_cipher_methods[SSL_ENC_3DES_IDX]=
290 EVP_get_cipherbyname(SN_des_ede3_cbc);
291 ssl_cipher_methods[SSL_ENC_RC4_IDX]=
292 EVP_get_cipherbyname(SN_rc4);
293 ssl_cipher_methods[SSL_ENC_RC2_IDX]=
294 EVP_get_cipherbyname(SN_rc2_cbc);
295 #ifndef OPENSSL_NO_IDEA
296 ssl_cipher_methods[SSL_ENC_IDEA_IDX]=
297 EVP_get_cipherbyname(SN_idea_cbc);
299 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL;
301 ssl_cipher_methods[SSL_ENC_AES128_IDX]=
302 EVP_get_cipherbyname(SN_aes_128_cbc);
303 ssl_cipher_methods[SSL_ENC_AES256_IDX]=
304 EVP_get_cipherbyname(SN_aes_256_cbc);
305 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]=
306 EVP_get_cipherbyname(SN_camellia_128_cbc);
307 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]=
308 EVP_get_cipherbyname(SN_camellia_256_cbc);
309 ssl_cipher_methods[SSL_ENC_GOST89_IDX]=
310 EVP_get_cipherbyname(SN_gost89_cnt);
312 ssl_digest_methods[SSL_MD_MD5_IDX]=
313 EVP_get_digestbyname(SN_md5);
314 ssl_digest_methods[SSL_MD_SHA1_IDX]=
315 EVP_get_digestbyname(SN_sha1);
319 #ifndef OPENSSL_NO_COMP
321 static int sk_comp_cmp(const SSL_COMP * const *a,
322 const SSL_COMP * const *b)
324 return((*a)->id-(*b)->id);
327 static void load_builtin_compressions(void)
329 int got_write_lock = 0;
331 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
332 if (ssl_comp_methods == NULL)
334 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
335 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
338 if (ssl_comp_methods == NULL)
340 SSL_COMP *comp = NULL;
343 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp);
344 if (ssl_comp_methods != NULL)
346 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
349 comp->method=COMP_zlib();
351 && comp->method->type == NID_undef)
355 comp->id=SSL_COMP_ZLIB_IDX;
356 comp->name=comp->method->name;
357 sk_SSL_COMP_push(ssl_comp_methods,comp);
366 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
368 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
372 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
373 const EVP_MD **md, SSL_COMP **comp)
379 if (c == NULL) return(0);
383 #ifndef OPENSSL_NO_COMP
384 load_builtin_compressions();
388 ctmp.id=s->compress_meth;
389 if (ssl_comp_methods != NULL)
391 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
393 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
399 if ((enc == NULL) || (md == NULL)) return(0);
401 switch (c->algorithm_enc)
422 i=SSL_ENC_AES128_IDX;
425 i=SSL_ENC_AES256_IDX;
427 case SSL_CAMELLIA128:
428 i=SSL_ENC_CAMELLIA128_IDX;
430 case SSL_CAMELLIA256:
431 i=SSL_ENC_CAMELLIA256_IDX;
433 case SSL_eGOST2814789CNT:
434 i=SSL_ENC_GOST89_IDX;
441 if ((i < 0) || (i > SSL_ENC_NUM_IDX))
445 if (i == SSL_ENC_NULL_IDX)
448 *enc=ssl_cipher_methods[i];
451 switch (c->algorithm_mac)
463 if ((i < 0) || (i > SSL_MD_NUM_IDX))
466 *md=ssl_digest_methods[i];
468 if ((*enc != NULL) && (*md != NULL))
474 #define ITEM_SEP(a) \
475 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
477 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
480 if (curr == *tail) return;
483 if (curr->prev != NULL)
484 curr->prev->next=curr->next;
485 if (curr->next != NULL)
486 curr->next->prev=curr->prev;
493 static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr,
496 if (curr == *head) return;
499 if (curr->next != NULL)
500 curr->next->prev=curr->prev;
501 if (curr->prev != NULL)
502 curr->prev->next=curr->next;
509 static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl)
517 #ifdef OPENSSL_NO_RSA
521 #ifdef OPENSSL_NO_DSA
524 *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */
527 *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH;
530 #ifdef OPENSSL_NO_KRB5
534 #ifdef OPENSSL_NO_ECDSA
537 #ifdef OPENSSL_NO_ECDH
538 *mkey |= SSL_kECDHe|SSL_kECDHr;
541 #ifdef OPENSSL_NO_PSK
545 #ifdef SSL_FORBID_ENULL
549 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0;
550 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0;
551 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0;
552 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0;
553 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0;
554 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0;
555 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0;
556 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0;
557 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0;
558 *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0;
560 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0;
561 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0;
564 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
566 unsigned long disabled_mkey, unsigned long disabled_auth,
567 unsigned long disabled_enc, unsigned long disabled_mac,
568 unsigned long disabled_ssl,
569 CIPHER_ORDER *co_list,
570 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
576 * We have num_of_ciphers descriptions compiled in, depending on the
577 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
578 * These will later be sorted in a linked list with at most num
582 /* Get the initial list of ciphers */
583 co_list_num = 0; /* actual count of ciphers */
584 for (i = 0; i < num_of_ciphers; i++)
586 c = ssl_method->get_cipher(i);
587 /* drop those that use any of that is not available */
588 if ((c != NULL) && c->valid &&
589 !(c->algorithm_mkey & disabled_mkey) &&
590 !(c->algorithm_auth & disabled_auth) &&
591 !(c->algorithm_enc & disabled_enc) &&
592 !(c->algorithm_mac & disabled_mac) &&
593 !(c->algorithm_ssl & disabled_ssl))
595 co_list[co_list_num].cipher = c;
596 co_list[co_list_num].next = NULL;
597 co_list[co_list_num].prev = NULL;
598 co_list[co_list_num].active = 0;
601 printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth);
602 #endif /* KSSL_DEBUG */
604 if (!sk_push(ca_list,(char *)c)) goto err;
610 * Prepare linked list from list entries
614 co_list[0].prev = NULL;
618 co_list[0].next = &co_list[1];
620 for (i = 1; i < co_list_num - 1; i++)
622 co_list[i].prev = &co_list[i - 1];
623 co_list[i].next = &co_list[i + 1];
626 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2];
629 co_list[co_list_num - 1].next = NULL;
631 *head_p = &co_list[0];
632 *tail_p = &co_list[co_list_num - 1];
636 static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list,
637 int num_of_group_aliases,
638 unsigned long disabled_mkey, unsigned long disabled_auth,
639 unsigned long disabled_enc, unsigned long disabled_mac,
640 unsigned long disabled_ssl,
643 CIPHER_ORDER *ciph_curr;
644 SSL_CIPHER **ca_curr;
646 unsigned long mask_mkey = ~disabled_mkey;
647 unsigned long mask_auth = ~disabled_auth;
648 unsigned long mask_enc = ~disabled_enc;
649 unsigned long mask_mac = ~disabled_mac;
650 unsigned long mask_ssl = ~disabled_ssl;
653 * First, add the real ciphers as already collected
657 while (ciph_curr != NULL)
659 *ca_curr = ciph_curr->cipher;
661 ciph_curr = ciph_curr->next;
665 * Now we add the available ones from the cipher_aliases[] table.
666 * They represent either one or more algorithms, some of which
667 * in any affected category must be supported (set in enabled_mask),
668 * or represent a cipher strength value (will be added in any case because algorithms=0).
670 for (i = 0; i < num_of_group_aliases; i++)
672 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey;
673 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth;
674 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc;
675 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac;
676 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl;
679 if ((algorithm_mkey & mask_mkey) == 0)
683 if ((algorithm_auth & mask_auth) == 0)
687 if ((algorithm_enc & mask_enc) == 0)
691 if ((algorithm_mac & mask_mac) == 0)
695 if ((algorithm_ssl & mask_ssl) == 0)
698 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
702 *ca_curr = NULL; /* end of list */
705 static void ssl_cipher_apply_rule(unsigned long cipher_id,
706 unsigned long alg_mkey, unsigned long alg_auth,
707 unsigned long alg_enc, unsigned long alg_mac,
708 unsigned long alg_ssl,
709 unsigned long algo_strength,
710 int rule, int strength_bits,
711 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
713 CIPHER_ORDER *head, *tail, *curr, *curr2, *last;
718 printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
719 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits);
722 if (rule == CIPHER_DEL)
723 reverse = 1; /* needed to maintain sorting between currently deleted ciphers */
742 if ((curr == NULL) || (curr == last)) break;
744 curr2 = reverse ? curr->prev : curr->next;
749 * Selection criteria is either the value of strength_bits
750 * or the algorithms used.
752 if (strength_bits >= 0)
754 if (strength_bits != cp->strength_bits)
760 printf("\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n", cp->name, cp->algorithm_mkey, cp->algorithm_auth, cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl, cp->algo_strength);
763 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
765 if (alg_auth && !(alg_auth & cp->algorithm_auth))
767 if (alg_enc && !(alg_enc & cp->algorithm_enc))
769 if (alg_mac && !(alg_mac & cp->algorithm_mac))
771 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
773 if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength))
775 if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength))
780 printf("Action = %d\n", rule);
783 /* add the cipher if it has not been added yet. */
784 if (rule == CIPHER_ADD)
789 ll_append_tail(&head, curr, &tail);
793 /* Move the added cipher to this location */
794 else if (rule == CIPHER_ORD)
799 ll_append_tail(&head, curr, &tail);
802 else if (rule == CIPHER_DEL)
807 /* most recently deleted ciphersuites get best positions
808 * for any future CIPHER_ADD (note that the CIPHER_DEL loop
809 * works in reverse to maintain the order) */
810 ll_append_head(&head, curr, &tail);
814 else if (rule == CIPHER_KILL)
820 curr->prev->next = curr->next;
824 if (curr->next != NULL)
825 curr->next->prev = curr->prev;
826 if (curr->prev != NULL)
827 curr->prev->next = curr->next;
837 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
838 CIPHER_ORDER **tail_p)
840 int max_strength_bits, i, *number_uses;
844 * This routine sorts the ciphers with descending strength. The sorting
845 * must keep the pre-sorted sequence, so we apply the normal sorting
846 * routine as '+' movement to the end of the list.
848 max_strength_bits = 0;
853 (curr->cipher->strength_bits > max_strength_bits))
854 max_strength_bits = curr->cipher->strength_bits;
858 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
861 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE);
864 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
867 * Now find the strength_bits values actually used
873 number_uses[curr->cipher->strength_bits]++;
877 * Go through the list of used strength_bits values in descending
880 for (i = max_strength_bits; i >= 0; i--)
881 if (number_uses[i] > 0)
882 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p);
884 OPENSSL_free(number_uses);
888 static int ssl_cipher_process_rulestr(const char *rule_str,
889 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p,
890 SSL_CIPHER **ca_list)
892 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength;
893 const char *l, *start, *buf;
894 int j, multi, found, rule, retval, ok, buflen;
895 unsigned long cipher_id = 0;
907 { rule = CIPHER_DEL; l++; }
909 { rule = CIPHER_ORD; l++; }
911 { rule = CIPHER_KILL; l++; }
913 { rule = CIPHER_SPECIAL; l++; }
915 { rule = CIPHER_ADD; }
936 #ifndef CHARSET_EBCDIC
937 while ( ((ch >= 'A') && (ch <= 'Z')) ||
938 ((ch >= '0') && (ch <= '9')) ||
939 ((ch >= 'a') && (ch <= 'z')) ||
942 while ( isalnum(ch) || (ch == '-'))
952 * We hit something we cannot deal with,
953 * it is no command or separator nor
954 * alphanumeric, so we call this an error.
956 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
957 SSL_R_INVALID_COMMAND);
963 if (rule == CIPHER_SPECIAL)
965 found = 0; /* unused -- avoid compiler warning */
966 break; /* special treatment */
969 /* check for multi-part specification */
979 * Now search for the cipher alias in the ca_list. Be careful
980 * with the strncmp, because the "buflen" limitation
981 * will make the rule "ADH:SOME" and the cipher
982 * "ADH-MY-CIPHER" look like a match for buflen=3.
983 * So additionally check whether the cipher name found
984 * has the correct length. We can save a strlen() call:
985 * just checking for the '\0' at the right place is
986 * sufficient, we have to strncmp() anyway. (We cannot
987 * use strcmp(), because buf is not '\0' terminated.)
993 if (!strncmp(buf, ca_list[j]->name, buflen) &&
994 (ca_list[j]->name[buflen] == '\0'))
1004 break; /* ignore this entry */
1006 if (ca_list[j]->algorithm_mkey)
1010 alg_mkey &= ca_list[j]->algorithm_mkey;
1011 if (!alg_mkey) { found = 0; break; }
1014 alg_mkey = ca_list[j]->algorithm_mkey;
1017 if (ca_list[j]->algorithm_auth)
1021 alg_auth &= ca_list[j]->algorithm_auth;
1022 if (!alg_auth) { found = 0; break; }
1025 alg_auth = ca_list[j]->algorithm_auth;
1028 if (ca_list[j]->algorithm_enc)
1032 alg_enc &= ca_list[j]->algorithm_enc;
1033 if (!alg_enc) { found = 0; break; }
1036 alg_enc = ca_list[j]->algorithm_enc;
1039 if (ca_list[j]->algorithm_mac)
1043 alg_mac &= ca_list[j]->algorithm_mac;
1044 if (!alg_mac) { found = 0; break; }
1047 alg_mac = ca_list[j]->algorithm_mac;
1050 if (ca_list[j]->algo_strength & SSL_EXP_MASK)
1052 if (algo_strength & SSL_EXP_MASK)
1054 algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK;
1055 if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; }
1058 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK;
1061 if (ca_list[j]->algo_strength & SSL_STRONG_MASK)
1063 if (algo_strength & SSL_STRONG_MASK)
1065 algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK;
1066 if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; }
1069 algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK;
1072 if (ca_list[j]->valid)
1074 /* explicit ciphersuite found; its protocol version
1075 * does not become part of the search pattern!*/
1077 cipher_id = ca_list[j]->id;
1081 /* not an explicit ciphersuite; only in this case, the
1082 * protocol version is considered part of the search pattern */
1084 if (ca_list[j]->algorithm_ssl)
1088 alg_ssl &= ca_list[j]->algorithm_ssl;
1089 if (!alg_ssl) { found = 0; break; }
1092 alg_ssl = ca_list[j]->algorithm_ssl;
1100 * Ok, we have the rule, now apply it
1102 if (rule == CIPHER_SPECIAL)
1103 { /* special command */
1105 if ((buflen == 8) &&
1106 !strncmp(buf, "STRENGTH", 8))
1107 ok = ssl_cipher_strength_sort(head_p, tail_p);
1109 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1110 SSL_R_INVALID_COMMAND);
1114 * We do not support any "multi" options
1115 * together with "@", so throw away the
1116 * rest of the command, if any left, until
1117 * end or ':' is found.
1119 while ((*l != '\0') && !ITEM_SEP(*l))
1124 ssl_cipher_apply_rule(cipher_id,
1125 alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength,
1126 rule, -1, head_p, tail_p);
1130 while ((*l != '\0') && !ITEM_SEP(*l))
1133 if (*l == '\0') break; /* done */
1139 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
1140 STACK_OF(SSL_CIPHER) **cipher_list,
1141 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
1142 const char *rule_str)
1144 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1145 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl;
1146 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1148 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1149 SSL_CIPHER **ca_list = NULL;
1152 * Return with error if nothing to do.
1154 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1158 * To reduce the work to do we only want to process the compiled
1159 * in algorithms, so we first get the mask of disabled ciphers.
1161 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl);
1164 * Now we have to collect the available ciphers from the compiled
1165 * in ciphers. We cannot get more than the number compiled in, so
1166 * it is used for allocation.
1168 num_of_ciphers = ssl_method->num_ciphers();
1170 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
1171 #endif /* KSSL_DEBUG */
1172 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
1173 if (co_list == NULL)
1175 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1176 return(NULL); /* Failure */
1179 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1180 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl,
1181 co_list, &head, &tail);
1184 /* Now arrange all ciphers by preference: */
1186 /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */
1187 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1188 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1190 /* AES is our preferred symmetric cipher */
1191 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1193 /* Temporarily enable everything else for sorting */
1194 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1196 /* Low priority for MD5 */
1197 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail);
1199 /* Move anonymous ciphers to the end. Usually, these will remain disabled.
1200 * (For applications that allow them, they aren't too bad, but we prefer
1201 * authenticated ciphers.) */
1202 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1204 /* Move ciphers without forward secrecy to the end */
1205 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1206 /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */
1207 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1208 ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1209 ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1211 /* RC4 is sort-of broken -- move the the end */
1212 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1214 /* Now sort by symmetric encryption strength. The above ordering remains
1215 * in force within each class */
1216 if (!ssl_cipher_strength_sort(&head, &tail))
1218 OPENSSL_free(co_list);
1222 /* Now disable everything (maintaining the ordering!) */
1223 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1227 * We also need cipher aliases for selecting based on the rule_str.
1228 * There might be two types of entries in the rule_str: 1) names
1229 * of ciphers themselves 2) aliases for groups of ciphers.
1230 * For 1) we need the available ciphers and for 2) the cipher
1231 * groups of cipher_aliases added together in one list (otherwise
1232 * we would be happy with just the cipher_aliases table).
1234 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
1235 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1237 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
1238 if (ca_list == NULL)
1240 OPENSSL_free(co_list);
1241 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1242 return(NULL); /* Failure */
1244 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1245 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl,
1249 * If the rule_string begins with DEFAULT, apply the default rule
1250 * before using the (possibly available) additional rules.
1254 if (strncmp(rule_str,"DEFAULT",7) == 0)
1256 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1257 &head, &tail, ca_list);
1263 if (ok && (strlen(rule_p) > 0))
1264 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list);
1266 OPENSSL_free(ca_list); /* Not needed anymore */
1269 { /* Rule processing failure */
1270 OPENSSL_free(co_list);
1275 * Allocate new "cipherstack" for the result, return with error
1276 * if we cannot get one.
1278 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL)
1280 OPENSSL_free(co_list);
1285 * The cipher selection for the list is done. The ciphers are added
1286 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1288 for (curr = head; curr != NULL; curr = curr->next)
1292 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1294 printf("<%s>\n",curr->cipher->name);
1298 OPENSSL_free(co_list); /* Not needed any longer */
1300 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1301 if (tmp_cipher_list == NULL)
1303 sk_SSL_CIPHER_free(cipherstack);
1306 if (*cipher_list != NULL)
1307 sk_SSL_CIPHER_free(*cipher_list);
1308 *cipher_list = cipherstack;
1309 if (*cipher_list_by_id != NULL)
1310 sk_SSL_CIPHER_free(*cipher_list_by_id);
1311 *cipher_list_by_id = tmp_cipher_list;
1312 sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
1314 return(cipherstack);
1317 char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len)
1319 int is_export,pkl,kl;
1320 const char *ver,*exp_str;
1321 const char *kx,*au,*enc,*mac;
1322 unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2,alg_s;
1324 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n";
1326 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1327 #endif /* KSSL_DEBUG */
1329 alg_mkey = cipher->algorithm_mkey;
1330 alg_auth = cipher->algorithm_auth;
1331 alg_enc = cipher->algorithm_enc;
1332 alg_mac = cipher->algorithm_mac;
1333 alg_ssl = cipher->algorithm_ssl;
1335 alg_s=cipher->algo_strength;
1336 alg2=cipher->algorithm2;
1338 is_export=SSL_C_IS_EXPORT(cipher);
1339 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1340 kl=SSL_C_EXPORT_KEYLENGTH(cipher);
1341 exp_str=is_export?" export":"";
1343 if (alg_ssl & SSL_SSLV2)
1345 else if (alg_ssl & SSL_SSLV3)
1353 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1365 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1417 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
1423 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1424 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1427 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1441 case SSL_CAMELLIA128:
1442 enc="Camellia(128)";
1444 case SSL_CAMELLIA256:
1445 enc="Camellia(256)";
1468 buf=OPENSSL_malloc(len);
1469 if (buf == NULL) return("OPENSSL_malloc Error");
1472 return("Buffer too small");
1475 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl);
1477 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str);
1478 #endif /* KSSL_DEBUG */
1482 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1486 if (c == NULL) return("(NONE)");
1487 i=(int)(c->id>>24L);
1489 return("TLSv1/SSLv3");
1496 /* return the actual cipher being used */
1497 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1504 /* number of bits for symmetric cipher */
1505 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1511 if (alg_bits != NULL) *alg_bits = c->alg_bits;
1512 ret = c->strength_bits;
1517 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1522 if ((n == 0) || (sk == NULL)) return(NULL);
1523 nn=sk_SSL_COMP_num(sk);
1524 for (i=0; i<nn; i++)
1526 ctmp=sk_SSL_COMP_value(sk,i);
1533 #ifdef OPENSSL_NO_COMP
1534 void *SSL_COMP_get_compression_methods(void)
1538 int SSL_COMP_add_compression_method(int id, void *cm)
1543 const char *SSL_COMP_get_name(const void *comp)
1548 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1550 load_builtin_compressions();
1551 return(ssl_comp_methods);
1554 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1558 if (cm == NULL || cm->type == NID_undef)
1561 /* According to draft-ietf-tls-compression-04.txt, the
1562 compression number ranges should be the following:
1564 0 to 63: methods defined by the IETF
1565 64 to 192: external party methods assigned by IANA
1566 193 to 255: reserved for private use */
1567 if (id < 193 || id > 255)
1569 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1574 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1577 load_builtin_compressions();
1578 if (ssl_comp_methods
1579 && !sk_SSL_COMP_find(ssl_comp_methods,comp))
1583 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID);
1586 else if ((ssl_comp_methods == NULL)
1587 || !sk_SSL_COMP_push(ssl_comp_methods,comp))
1591 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
1601 const char *SSL_COMP_get_name(const COMP_METHOD *comp)