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_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, 0,0,~SSL_eNULL,0,0,0,0,0,0},
195 /* "COMPLEMENTOFALL" */
196 {0,SSL_TXT_CMPALL,0, 0,0,SSL_eNULL,0,0,0,0,0,0},
198 /* "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in ALL!) */
199 {0,SSL_TXT_CMPDEF,0, SSL_kEDH|SSL_kEECDH,SSL_aNULL,~SSL_eNULL,0,0,0,0,0,0},
201 /* key exchange aliases
202 * (some of those using only a single bit here combine
203 * multiple key exchange algs according to the RFCs,
204 * e.g. kEDH combines DHE_DSS and DHE_RSA) */
205 {0,SSL_TXT_kRSA,0, SSL_kRSA, 0,0,0,0,0,0,0,0},
207 {0,SSL_TXT_kDHr,0, SSL_kDHr, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
208 {0,SSL_TXT_kDHd,0, SSL_kDHd, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
209 {0,SSL_TXT_kDH,0, SSL_kDHr|SSL_kDHd,0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
210 {0,SSL_TXT_kEDH,0, SSL_kEDH, 0,0,0,0,0,0,0,0},
211 {0,SSL_TXT_DH,0, SSL_kDHr|SSL_kDHd|SSL_kEDH,0,0,0,0,0,0,0,0},
213 {0,SSL_TXT_kKRB5,0, SSL_kKRB5, 0,0,0,0,0,0,0,0},
215 {0,SSL_TXT_kECDHr,0, SSL_kECDHr,0,0,0,0,0,0,0,0},
216 {0,SSL_TXT_kECDHe,0, SSL_kECDHe,0,0,0,0,0,0,0,0},
217 {0,SSL_TXT_kECDH,0, SSL_kECDHr|SSL_kECDHe,0,0,0,0,0,0,0,0},
218 {0,SSL_TXT_kEECDH,0, SSL_kEECDH,0,0,0,0,0,0,0,0},
219 {0,SSL_TXT_ECDH,0, SSL_kECDHr|SSL_kECDHe|SSL_kEECDH,0,0,0,0,0,0,0,0},
221 {0,SSL_TXT_kPSK,0, SSL_kPSK, 0,0,0,0,0,0,0,0},
224 /* server authentication aliases */
225 {0,SSL_TXT_aRSA,0, 0,SSL_aRSA, 0,0,0,0,0,0,0},
226 {0,SSL_TXT_aDSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0},
227 {0,SSL_TXT_DSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0},
228 {0,SSL_TXT_aKRB5,0, 0,SSL_aKRB5, 0,0,0,0,0,0,0},
229 {0,SSL_TXT_aNULL,0, 0,SSL_aNULL, 0,0,0,0,0,0,0},
230 {0,SSL_TXT_aDH,0, 0,SSL_aDH, 0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
231 {0,SSL_TXT_aECDH,0, 0,SSL_aECDH, 0,0,0,0,0,0,0},
232 {0,SSL_TXT_aECDSA,0, 0,SSL_aECDSA,0,0,0,0,0,0,0},
233 {0,SSL_TXT_ECDSA,0, 0,SSL_aECDSA, 0,0,0,0,0,0,0},
234 {0,SSL_TXT_aPSK,0, 0,SSL_aPSK, 0,0,0,0,0,0,0},
237 /* aliases combining key exchange and server authentication */
238 {0,SSL_TXT_EDH,0, SSL_kEDH,~SSL_aNULL,0,0,0,0,0,0,0},
239 {0,SSL_TXT_EECDH,0, SSL_kEECDH,~SSL_aNULL,0,0,0,0,0,0,0},
240 {0,SSL_TXT_NULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0},
241 {0,SSL_TXT_KRB5,0, SSL_kKRB5,SSL_aKRB5,0,0,0,0,0,0,0},
242 {0,SSL_TXT_RSA,0, SSL_kRSA,SSL_aRSA,0,0,0,0,0,0,0},
243 {0,SSL_TXT_ADH,0, SSL_kEDH,SSL_aNULL,0,0,0,0,0,0,0},
244 {0,SSL_TXT_AECDH,0, SSL_kEECDH,SSL_aNULL,0,0,0,0,0,0,0},
245 {0,SSL_TXT_PSK,0, SSL_kPSK,SSL_aPSK,0,0,0,0,0,0,0},
248 /* symmetric encryption aliases */
249 {0,SSL_TXT_DES,0, 0,0,SSL_DES, 0,0,0,0,0,0},
250 {0,SSL_TXT_3DES,0, 0,0,SSL_3DES, 0,0,0,0,0,0},
251 {0,SSL_TXT_RC4,0, 0,0,SSL_RC4, 0,0,0,0,0,0},
252 {0,SSL_TXT_RC2,0, 0,0,SSL_RC2, 0,0,0,0,0,0},
253 {0,SSL_TXT_IDEA,0, 0,0,SSL_IDEA, 0,0,0,0,0,0},
254 {0,SSL_TXT_eNULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0},
255 {0,SSL_TXT_AES128,0, 0,0,SSL_AES128,0,0,0,0,0,0},
256 {0,SSL_TXT_AES256,0, 0,0,SSL_AES256,0,0,0,0,0,0},
257 {0,SSL_TXT_AES,0, 0,0,SSL_AES128|SSL_AES256,0,0,0,0,0,0},
258 {0,SSL_TXT_CAMELLIA128,0,0,0,SSL_CAMELLIA128,0,0,0,0,0,0},
259 {0,SSL_TXT_CAMELLIA256,0,0,0,SSL_CAMELLIA256,0,0,0,0,0,0},
260 {0,SSL_TXT_CAMELLIA ,0,0,0,SSL_CAMELLIA128|SSL_CAMELLIA256,0,0,0,0,0,0},
263 {0,SSL_TXT_MD5,0, 0,0,0,SSL_MD5, 0,0,0,0,0},
264 {0,SSL_TXT_SHA1,0, 0,0,0,SSL_SHA1, 0,0,0,0,0},
265 {0,SSL_TXT_SHA,0, 0,0,0,SSL_SHA1, 0,0,0,0,0},
267 /* protocol version aliases */
268 {0,SSL_TXT_SSLV2,0, 0,0,0,0,SSL_SSLV2, 0,0,0,0},
269 {0,SSL_TXT_SSLV3,0, 0,0,0,0,SSL_SSLV3, 0,0,0,0},
270 {0,SSL_TXT_TLSV1,0, 0,0,0,0,SSL_TLSV1, 0,0,0,0},
273 {0,SSL_TXT_EXP,0, 0,0,0,0,0,SSL_EXPORT,0,0,0},
274 {0,SSL_TXT_EXPORT,0, 0,0,0,0,0,SSL_EXPORT,0,0,0},
276 /* strength classes */
277 {0,SSL_TXT_EXP40,0, 0,0,0,0,0,SSL_EXP40, 0,0,0},
278 {0,SSL_TXT_EXP56,0, 0,0,0,0,0,SSL_EXP56, 0,0,0},
279 {0,SSL_TXT_LOW,0, 0,0,0,0,0,SSL_LOW, 0,0,0},
280 {0,SSL_TXT_MEDIUM,0, 0,0,0,0,0,SSL_MEDIUM,0,0,0},
281 {0,SSL_TXT_HIGH,0, 0,0,0,0,0,SSL_HIGH, 0,0,0},
284 void ssl_load_ciphers(void)
286 ssl_cipher_methods[SSL_ENC_DES_IDX]=
287 EVP_get_cipherbyname(SN_des_cbc);
288 ssl_cipher_methods[SSL_ENC_3DES_IDX]=
289 EVP_get_cipherbyname(SN_des_ede3_cbc);
290 ssl_cipher_methods[SSL_ENC_RC4_IDX]=
291 EVP_get_cipherbyname(SN_rc4);
292 ssl_cipher_methods[SSL_ENC_RC2_IDX]=
293 EVP_get_cipherbyname(SN_rc2_cbc);
294 #ifndef OPENSSL_NO_IDEA
295 ssl_cipher_methods[SSL_ENC_IDEA_IDX]=
296 EVP_get_cipherbyname(SN_idea_cbc);
298 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL;
300 ssl_cipher_methods[SSL_ENC_AES128_IDX]=
301 EVP_get_cipherbyname(SN_aes_128_cbc);
302 ssl_cipher_methods[SSL_ENC_AES256_IDX]=
303 EVP_get_cipherbyname(SN_aes_256_cbc);
304 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]=
305 EVP_get_cipherbyname(SN_camellia_128_cbc);
306 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]=
307 EVP_get_cipherbyname(SN_camellia_256_cbc);
309 ssl_digest_methods[SSL_MD_MD5_IDX]=
310 EVP_get_digestbyname(SN_md5);
311 ssl_digest_methods[SSL_MD_SHA1_IDX]=
312 EVP_get_digestbyname(SN_sha1);
316 #ifndef OPENSSL_NO_COMP
318 static int sk_comp_cmp(const SSL_COMP * const *a,
319 const SSL_COMP * const *b)
321 return((*a)->id-(*b)->id);
324 static void load_builtin_compressions(void)
326 int got_write_lock = 0;
328 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
329 if (ssl_comp_methods == NULL)
331 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
332 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
335 if (ssl_comp_methods == NULL)
337 SSL_COMP *comp = NULL;
340 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp);
341 if (ssl_comp_methods != NULL)
343 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
346 comp->method=COMP_zlib();
348 && comp->method->type == NID_undef)
352 comp->id=SSL_COMP_ZLIB_IDX;
353 comp->name=comp->method->name;
354 sk_SSL_COMP_push(ssl_comp_methods,comp);
363 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
365 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
369 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
370 const EVP_MD **md, SSL_COMP **comp)
376 if (c == NULL) return(0);
380 #ifndef OPENSSL_NO_COMP
381 load_builtin_compressions();
385 ctmp.id=s->compress_meth;
386 if (ssl_comp_methods != NULL)
388 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
390 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
396 if ((enc == NULL) || (md == NULL)) return(0);
398 switch (c->algorithm_enc)
419 i=SSL_ENC_AES128_IDX;
422 i=SSL_ENC_AES256_IDX;
424 case SSL_CAMELLIA128:
425 i=SSL_ENC_CAMELLIA128_IDX;
427 case SSL_CAMELLIA256:
428 i=SSL_ENC_CAMELLIA256_IDX;
435 if ((i < 0) || (i > SSL_ENC_NUM_IDX))
439 if (i == SSL_ENC_NULL_IDX)
442 *enc=ssl_cipher_methods[i];
445 switch (c->algorithm_mac)
457 if ((i < 0) || (i > SSL_MD_NUM_IDX))
460 *md=ssl_digest_methods[i];
462 if ((*enc != NULL) && (*md != NULL))
468 #define ITEM_SEP(a) \
469 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
471 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
474 if (curr == *tail) return;
477 if (curr->prev != NULL)
478 curr->prev->next=curr->next;
479 if (curr->next != NULL) /* should always be true */
480 curr->next->prev=curr->prev;
487 static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl)
495 #ifdef OPENSSL_NO_RSA
499 #ifdef OPENSSL_NO_DSA
502 *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */
505 *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH;
508 #ifdef OPENSSL_NO_KRB5
512 #ifdef OPENSSL_NO_ECDSA
515 #ifdef OPENSSL_NO_ECDH
516 *mkey |= SSL_kECDHe|SSL_kECDHr;
519 #ifdef OPENSSL_NO_PSK
523 #ifdef SSL_FORBID_ENULL
527 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0;
528 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0;
529 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0;
530 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0;
531 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0;
532 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0;
533 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0;
534 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0;
535 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0;
537 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0;
538 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0;
541 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
543 unsigned long disabled_mkey, unsigned long disabled_auth,
544 unsigned long disabled_enc, unsigned long disabled_mac,
545 unsigned long disabled_ssl,
546 CIPHER_ORDER *co_list,
547 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
553 * We have num_of_ciphers descriptions compiled in, depending on the
554 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
555 * These will later be sorted in a linked list with at most num
559 /* Get the initial list of ciphers */
560 co_list_num = 0; /* actual count of ciphers */
561 for (i = 0; i < num_of_ciphers; i++)
563 c = ssl_method->get_cipher(i);
564 /* drop those that use any of that is not available */
565 if ((c != NULL) && c->valid &&
566 !(c->algorithm_mkey & disabled_mkey) &&
567 !(c->algorithm_auth & disabled_auth) &&
568 !(c->algorithm_enc & disabled_enc) &&
569 !(c->algorithm_mac & disabled_mac) &&
570 !(c->algorithm_ssl & disabled_ssl))
572 co_list[co_list_num].cipher = c;
573 co_list[co_list_num].next = NULL;
574 co_list[co_list_num].prev = NULL;
575 co_list[co_list_num].active = 0;
578 printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth);
579 #endif /* KSSL_DEBUG */
581 if (!sk_push(ca_list,(char *)c)) goto err;
587 * Prepare linked list from list entries
589 for (i = 1; i < co_list_num - 1; i++)
591 co_list[i].prev = &(co_list[i-1]);
592 co_list[i].next = &(co_list[i+1]);
596 (*head_p) = &(co_list[0]);
597 (*head_p)->prev = NULL;
598 (*head_p)->next = &(co_list[1]);
599 (*tail_p) = &(co_list[co_list_num - 1]);
600 (*tail_p)->prev = &(co_list[co_list_num - 2]);
601 (*tail_p)->next = NULL;
605 static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list,
606 int num_of_group_aliases,
607 unsigned long disabled_mkey, unsigned long disabled_auth,
608 unsigned long disabled_enc, unsigned long disabled_mac,
609 unsigned long disabled_ssl,
612 CIPHER_ORDER *ciph_curr;
613 SSL_CIPHER **ca_curr;
615 unsigned long mask_mkey = ~disabled_mkey;
616 unsigned long mask_auth = ~disabled_auth;
617 unsigned long mask_enc = ~disabled_enc;
618 unsigned long mask_mac = ~disabled_mac;
619 unsigned long mask_ssl = ~disabled_ssl;
622 * First, add the real ciphers as already collected
626 while (ciph_curr != NULL)
628 *ca_curr = ciph_curr->cipher;
630 ciph_curr = ciph_curr->next;
634 * Now we add the available ones from the cipher_aliases[] table.
635 * They represent either one or more algorithms, some of which
636 * in any affected category must be supported (set in enabled_mask),
637 * or represent a cipher strength value (will be added in any case because algorithms=0).
639 for (i = 0; i < num_of_group_aliases; i++)
641 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey;
642 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth;
643 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc;
644 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac;
645 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl;
648 if ((algorithm_mkey & mask_mkey) == 0)
652 if ((algorithm_auth & mask_auth) == 0)
656 if ((algorithm_enc & mask_enc) == 0)
660 if ((algorithm_mac & mask_mac) == 0)
664 if ((algorithm_ssl & mask_ssl) == 0)
667 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
671 *ca_curr = NULL; /* end of list */
674 static void ssl_cipher_apply_rule(unsigned long cipher_id,
675 unsigned long alg_mkey, unsigned long alg_auth,
676 unsigned long alg_enc, unsigned long alg_mac,
677 unsigned long alg_ssl,
678 unsigned long algo_strength,
679 int rule, int strength_bits,
680 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
682 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2;
686 printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
687 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits);
690 curr = head = *head_p;
692 tail2 = tail = *tail_p;
695 if ((curr == NULL) || (curr == tail2)) break;
702 * Selection criteria is either the value of strength_bits
703 * or the algorithms used.
705 if (strength_bits >= 0)
707 if (strength_bits != cp->strength_bits)
713 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);
716 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
718 if (alg_auth && !(alg_auth & cp->algorithm_auth))
720 if (alg_enc && !(alg_enc & cp->algorithm_enc))
722 if (alg_mac && !(alg_mac & cp->algorithm_mac))
724 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
726 if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength))
728 if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength))
733 printf("Action = %d\n", rule);
736 /* add the cipher if it has not been added yet. */
737 if (rule == CIPHER_ADD)
741 ll_append_tail(&head, curr, &tail);
745 /* Move the added cipher to this location */
746 else if (rule == CIPHER_ORD)
750 ll_append_tail(&head, curr, &tail);
753 else if (rule == CIPHER_DEL)
755 else if (rule == CIPHER_KILL)
760 curr->prev->next = curr->next;
764 if (curr->next != NULL)
765 curr->next->prev = curr->prev;
766 if (curr->prev != NULL)
767 curr->prev->next = curr->next;
777 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p,
778 CIPHER_ORDER **tail_p)
780 int max_strength_bits, i, *number_uses;
784 * This routine sorts the ciphers with descending strength. The sorting
785 * must keep the pre-sorted sequence, so we apply the normal sorting
786 * routine as '+' movement to the end of the list.
788 max_strength_bits = 0;
793 (curr->cipher->strength_bits > max_strength_bits))
794 max_strength_bits = curr->cipher->strength_bits;
798 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
801 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE);
804 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
807 * Now find the strength_bits values actually used
813 number_uses[curr->cipher->strength_bits]++;
817 * Go through the list of used strength_bits values in descending
820 for (i = max_strength_bits; i >= 0; i--)
821 if (number_uses[i] > 0)
822 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p);
824 OPENSSL_free(number_uses);
828 static int ssl_cipher_process_rulestr(const char *rule_str,
829 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p,
830 SSL_CIPHER **ca_list)
832 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength;
833 const char *l, *start, *buf;
834 int j, multi, found, rule, retval, ok, buflen;
835 unsigned long cipher_id = 0;
847 { rule = CIPHER_DEL; l++; }
849 { rule = CIPHER_ORD; l++; }
851 { rule = CIPHER_KILL; l++; }
853 { rule = CIPHER_SPECIAL; l++; }
855 { rule = CIPHER_ADD; }
876 #ifndef CHARSET_EBCDIC
877 while ( ((ch >= 'A') && (ch <= 'Z')) ||
878 ((ch >= '0') && (ch <= '9')) ||
879 ((ch >= 'a') && (ch <= 'z')) ||
882 while ( isalnum(ch) || (ch == '-'))
892 * We hit something we cannot deal with,
893 * it is no command or separator nor
894 * alphanumeric, so we call this an error.
896 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
897 SSL_R_INVALID_COMMAND);
903 if (rule == CIPHER_SPECIAL)
905 found = 0; /* unused -- avoid compiler warning */
906 break; /* special treatment */
909 /* check for multi-part specification */
919 * Now search for the cipher alias in the ca_list. Be careful
920 * with the strncmp, because the "buflen" limitation
921 * will make the rule "ADH:SOME" and the cipher
922 * "ADH-MY-CIPHER" look like a match for buflen=3.
923 * So additionally check whether the cipher name found
924 * has the correct length. We can save a strlen() call:
925 * just checking for the '\0' at the right place is
926 * sufficient, we have to strncmp() anyway. (We cannot
927 * use strcmp(), because buf is not '\0' terminated.)
933 if (!strncmp(buf, ca_list[j]->name, buflen) &&
934 (ca_list[j]->name[buflen] == '\0'))
944 break; /* ignore this entry */
946 if (ca_list[j]->algorithm_mkey)
950 alg_mkey &= ca_list[j]->algorithm_mkey;
951 if (!alg_mkey) { found = 0; break; }
954 alg_mkey = ca_list[j]->algorithm_mkey;
957 if (ca_list[j]->algorithm_auth)
961 alg_auth &= ca_list[j]->algorithm_auth;
962 if (!alg_auth) { found = 0; break; }
965 alg_auth = ca_list[j]->algorithm_auth;
968 if (ca_list[j]->algorithm_enc)
972 alg_enc &= ca_list[j]->algorithm_enc;
973 if (!alg_enc) { found = 0; break; }
976 alg_enc = ca_list[j]->algorithm_enc;
979 if (ca_list[j]->algorithm_mac)
983 alg_mac &= ca_list[j]->algorithm_mac;
984 if (!alg_mac) { found = 0; break; }
987 alg_mac = ca_list[j]->algorithm_mac;
990 if (ca_list[j]->algo_strength & SSL_EXP_MASK)
992 if (algo_strength & SSL_EXP_MASK)
994 algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK;
995 if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; }
998 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK;
1001 if (ca_list[j]->algo_strength & SSL_STRONG_MASK)
1003 if (algo_strength & SSL_STRONG_MASK)
1005 algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK;
1006 if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; }
1009 algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK;
1012 if (ca_list[j]->valid)
1014 /* explicit ciphersuite found; its protocol version
1015 * does not become part of the search pattern!*/
1017 cipher_id = ca_list[j]->id;
1021 /* not an explicit ciphersuite; only in this case, the
1022 * protocol version is considered part of the search pattern */
1024 if (ca_list[j]->algorithm_ssl)
1028 alg_ssl &= ca_list[j]->algorithm_ssl;
1029 if (!alg_ssl) { found = 0; break; }
1032 alg_ssl = ca_list[j]->algorithm_ssl;
1040 * Ok, we have the rule, now apply it
1042 if (rule == CIPHER_SPECIAL)
1043 { /* special command */
1045 if ((buflen == 8) &&
1046 !strncmp(buf, "STRENGTH", 8))
1047 ok = ssl_cipher_strength_sort(head_p, tail_p);
1049 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
1050 SSL_R_INVALID_COMMAND);
1054 * We do not support any "multi" options
1055 * together with "@", so throw away the
1056 * rest of the command, if any left, until
1057 * end or ':' is found.
1059 while ((*l != '\0') && !ITEM_SEP(*l))
1064 ssl_cipher_apply_rule(cipher_id,
1065 alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength,
1066 rule, -1, head_p, tail_p);
1070 while ((*l != '\0') && !ITEM_SEP(*l))
1073 if (*l == '\0') break; /* done */
1079 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
1080 STACK_OF(SSL_CIPHER) **cipher_list,
1081 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
1082 const char *rule_str)
1084 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
1085 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl;
1086 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
1088 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
1089 SSL_CIPHER **ca_list = NULL;
1092 * Return with error if nothing to do.
1094 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
1098 * To reduce the work to do we only want to process the compiled
1099 * in algorithms, so we first get the mask of disabled ciphers.
1101 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl);
1104 * Now we have to collect the available ciphers from the compiled
1105 * in ciphers. We cannot get more than the number compiled in, so
1106 * it is used for allocation.
1108 num_of_ciphers = ssl_method->num_ciphers();
1110 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
1111 #endif /* KSSL_DEBUG */
1112 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
1113 if (co_list == NULL)
1115 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1116 return(NULL); /* Failure */
1119 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers,
1120 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl,
1121 co_list, &head, &tail);
1124 /* Now arrange all ciphers by preference: */
1126 /* Temporarily enabled AES first (preferred cipher) */
1127 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1129 /* Temporarily enable everything else */
1130 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail);
1132 /* Move anonymous ciphers to the end. Usually, these will remain disabled.
1133 * (For applications that allow them, they aren't too bad, but we prefer
1134 * authenticated ciphers.) */
1135 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1137 /* Move ciphers without forward secrecy to the end */
1138 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1139 /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */
1140 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1141 ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1143 /* RC4 is sort-of broken -- move the the end */
1144 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail);
1146 /* Now sort by symmetric encryption strength. The above ordering remains
1147 * in force within each class */
1148 if (!ssl_cipher_strength_sort(&head, &tail))
1150 OPENSSL_free(co_list);
1154 /* Now disable everything (maintaining the ordering!) */
1155 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail);
1159 * We also need cipher aliases for selecting based on the rule_str.
1160 * There might be two types of entries in the rule_str: 1) names
1161 * of ciphers themselves 2) aliases for groups of ciphers.
1162 * For 1) we need the available ciphers and for 2) the cipher
1163 * groups of cipher_aliases added together in one list (otherwise
1164 * we would be happy with just the cipher_aliases table).
1166 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
1167 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1169 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
1170 if (ca_list == NULL)
1172 OPENSSL_free(co_list);
1173 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1174 return(NULL); /* Failure */
1176 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1177 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl,
1181 * If the rule_string begins with DEFAULT, apply the default rule
1182 * before using the (possibly available) additional rules.
1186 if (strncmp(rule_str,"DEFAULT",7) == 0)
1188 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1189 &head, &tail, ca_list);
1195 if (ok && (strlen(rule_p) > 0))
1196 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list);
1198 OPENSSL_free(ca_list); /* Not needed anymore */
1201 { /* Rule processing failure */
1202 OPENSSL_free(co_list);
1207 * Allocate new "cipherstack" for the result, return with error
1208 * if we cannot get one.
1210 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL)
1212 OPENSSL_free(co_list);
1217 * The cipher selection for the list is done. The ciphers are added
1218 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1220 for (curr = head; curr != NULL; curr = curr->next)
1224 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1226 printf("<%s>\n",curr->cipher->name);
1230 OPENSSL_free(co_list); /* Not needed any longer */
1232 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1233 if (tmp_cipher_list == NULL)
1235 sk_SSL_CIPHER_free(cipherstack);
1238 if (*cipher_list != NULL)
1239 sk_SSL_CIPHER_free(*cipher_list);
1240 *cipher_list = cipherstack;
1241 if (*cipher_list_by_id != NULL)
1242 sk_SSL_CIPHER_free(*cipher_list_by_id);
1243 *cipher_list_by_id = tmp_cipher_list;
1244 sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
1246 return(cipherstack);
1249 char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len)
1251 int is_export,pkl,kl;
1252 const char *ver,*exp_str;
1253 const char *kx,*au,*enc,*mac;
1254 unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2,alg_s;
1256 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n";
1258 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1259 #endif /* KSSL_DEBUG */
1261 alg_mkey = cipher->algorithm_mkey;
1262 alg_auth = cipher->algorithm_auth;
1263 alg_enc = cipher->algorithm_enc;
1264 alg_mac = cipher->algorithm_mac;
1265 alg_ssl = cipher->algorithm_ssl;
1267 alg_s=cipher->algo_strength;
1268 alg2=cipher->algorithm2;
1270 is_export=SSL_C_IS_EXPORT(cipher);
1271 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1272 kl=SSL_C_EXPORT_KEYLENGTH(cipher);
1273 exp_str=is_export?" export":"";
1275 if (alg_ssl & SSL_SSLV2)
1277 else if (alg_ssl & SSL_SSLV3)
1285 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1297 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1349 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
1355 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1356 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1359 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1373 case SSL_CAMELLIA128:
1374 enc="Camellia(128)";
1376 case SSL_CAMELLIA256:
1377 enc="Camellia(256)";
1400 buf=OPENSSL_malloc(len);
1401 if (buf == NULL) return("OPENSSL_malloc Error");
1404 return("Buffer too small");
1407 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl);
1409 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str);
1410 #endif /* KSSL_DEBUG */
1414 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1418 if (c == NULL) return("(NONE)");
1419 i=(int)(c->id>>24L);
1421 return("TLSv1/SSLv3");
1428 /* return the actual cipher being used */
1429 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1436 /* number of bits for symmetric cipher */
1437 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1443 if (alg_bits != NULL) *alg_bits = c->alg_bits;
1444 ret = c->strength_bits;
1449 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1454 if ((n == 0) || (sk == NULL)) return(NULL);
1455 nn=sk_SSL_COMP_num(sk);
1456 for (i=0; i<nn; i++)
1458 ctmp=sk_SSL_COMP_value(sk,i);
1465 #ifdef OPENSSL_NO_COMP
1466 void *SSL_COMP_get_compression_methods(void)
1470 int SSL_COMP_add_compression_method(int id, void *cm)
1475 const char *SSL_COMP_get_name(const void *comp)
1480 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1482 load_builtin_compressions();
1483 return(ssl_comp_methods);
1486 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1490 if (cm == NULL || cm->type == NID_undef)
1493 /* According to draft-ietf-tls-compression-04.txt, the
1494 compression number ranges should be the following:
1496 0 to 63: methods defined by the IETF
1497 64 to 192: external party methods assigned by IANA
1498 193 to 255: reserved for private use */
1499 if (id < 193 || id > 255)
1501 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1506 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1509 load_builtin_compressions();
1510 if (ssl_comp_methods
1511 && !sk_SSL_COMP_find(ssl_comp_methods,comp))
1515 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID);
1518 else if ((ssl_comp_methods == NULL)
1519 || !sk_SSL_COMP_push(ssl_comp_methods,comp))
1523 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
1533 const char *SSL_COMP_get_name(const COMP_METHOD *comp)