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1/* ssl/ssl_ciph.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
57 */
58/* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
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
71 * distribution.
72 *
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/)"
77 *
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.
82 *
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.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
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 * ====================================================================
105 *
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).
109 *
110 */
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.
115 */
116#include <stdio.h>
117#include <openssl/objects.h>
118#ifndef OPENSSL_NO_COMP
119#include <openssl/comp.h>
120#endif
121
122#include "ssl_locl.h"
123
124#define SSL_ENC_DES_IDX 0
125#define SSL_ENC_3DES_IDX 1
126#define SSL_ENC_RC4_IDX 2
127#define SSL_ENC_RC2_IDX 3
128#define SSL_ENC_IDEA_IDX 4
129#define SSL_ENC_eFZA_IDX 5
130#define SSL_ENC_NULL_IDX 6
131#define SSL_ENC_AES128_IDX 7
132#define SSL_ENC_AES256_IDX 8
133#define SSL_ENC_CAMELLIA128_IDX 9
134#define SSL_ENC_CAMELLIA256_IDX 10
135#define SSL_ENC_SEED_IDX 11
136#define SSL_ENC_NUM_IDX 12
137
138
139static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={
140 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL
141 };
142
143#define SSL_COMP_NULL_IDX 0
144#define SSL_COMP_ZLIB_IDX 1
145#define SSL_COMP_NUM_IDX 2
146
147static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL;
148
149#define SSL_MD_MD5_IDX 0
150#define SSL_MD_SHA1_IDX 1
151#define SSL_MD_NUM_IDX 2
152static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={
153 NULL,NULL,
154 };
155
156#define CIPHER_ADD 1
157#define CIPHER_KILL 2
158#define CIPHER_DEL 3
159#define CIPHER_ORD 4
160#define CIPHER_SPECIAL 5
161
162typedef struct cipher_order_st
163 {
164 SSL_CIPHER *cipher;
165 int active;
166 int dead;
167 struct cipher_order_st *next,*prev;
168 } CIPHER_ORDER;
169
170static const SSL_CIPHER cipher_aliases[]={
171 /* Don't include eNULL unless specifically enabled. */
172 /* Don't include ECC in ALL because these ciphers are not yet official. */
173 {0,SSL_TXT_ALL, 0,SSL_ALL & ~SSL_eNULL & ~SSL_kECDH & ~SSL_kECDHE, SSL_ALL ,0,0,0,SSL_ALL,SSL_ALL}, /* must be first */
174 /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */
175 {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, /* COMPLEMENT OF ALL */
176 {0,SSL_TXT_CMPDEF,0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK,0},
177 {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0}, /* VRS Kerberos5 */
178 {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0},
179 {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0},
180 {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0},
181 {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0},
182 {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,0,0,0,SSL_MKEY_MASK,0},
183 {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0},
184 {0,SSL_TXT_ECC, 0,(SSL_kECDH|SSL_kECDHE), 0,0,0,0,SSL_MKEY_MASK,0},
185 {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0},
186 {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0}, /* VRS Kerberos5 */
187 {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0},
188 {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0},
189 {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,0,0,0,SSL_AUTH_MASK,0},
190 {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0},
191 {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0},
192 {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0},
193
194 {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0},
195 {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0},
196 {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0},
197 {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0},
198#ifndef OPENSSL_NO_IDEA
199 {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0},
200#endif
201 {0,SSL_TXT_SEED,0,SSL_SEED, 0,0,0,0,SSL_ENC_MASK,0},
202 {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0},
203 {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,0,0,0,SSL_ENC_MASK,0},
204 {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0},
205 {0,SSL_TXT_CAMELLIA,0,SSL_CAMELLIA, 0,0,0,0,SSL_ENC_MASK,0},
206
207 {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0},
208 {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0},
209 {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0},
210
211 {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0},
212 {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
213 {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
214 {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
215 {0,SSL_TXT_FZA, 0,SSL_FZA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK,0},
216
217 {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0},
218 {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0},
219 {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0},
220
221 {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK},
222 {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK},
223 {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK},
224 {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK},
225 {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK},
226 {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK},
227 {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK},
228 {0,SSL_TXT_FIPS, 0, 0, SSL_FIPS, 0,0,0,0,SSL_FIPS|SSL_STRONG_NONE},
229 };
230
231void ssl_load_ciphers(void)
232 {
233 ssl_cipher_methods[SSL_ENC_DES_IDX]=
234 EVP_get_cipherbyname(SN_des_cbc);
235 ssl_cipher_methods[SSL_ENC_3DES_IDX]=
236 EVP_get_cipherbyname(SN_des_ede3_cbc);
237 ssl_cipher_methods[SSL_ENC_RC4_IDX]=
238 EVP_get_cipherbyname(SN_rc4);
239 ssl_cipher_methods[SSL_ENC_RC2_IDX]=
240 EVP_get_cipherbyname(SN_rc2_cbc);
241#ifndef OPENSSL_NO_IDEA
242 ssl_cipher_methods[SSL_ENC_IDEA_IDX]=
243 EVP_get_cipherbyname(SN_idea_cbc);
244#else
245 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL;
246#endif
247 ssl_cipher_methods[SSL_ENC_AES128_IDX]=
248 EVP_get_cipherbyname(SN_aes_128_cbc);
249 ssl_cipher_methods[SSL_ENC_AES256_IDX]=
250 EVP_get_cipherbyname(SN_aes_256_cbc);
251 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]=
252 EVP_get_cipherbyname(SN_camellia_128_cbc);
253 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]=
254 EVP_get_cipherbyname(SN_camellia_256_cbc);
255 ssl_cipher_methods[SSL_ENC_SEED_IDX]=
256 EVP_get_cipherbyname(SN_seed_cbc);
257
258 ssl_digest_methods[SSL_MD_MD5_IDX]=
259 EVP_get_digestbyname(SN_md5);
260 ssl_digest_methods[SSL_MD_SHA1_IDX]=
261 EVP_get_digestbyname(SN_sha1);
262 }
263
264
265#ifndef OPENSSL_NO_COMP
266
267static int sk_comp_cmp(const SSL_COMP * const *a,
268 const SSL_COMP * const *b)
269 {
270 return((*a)->id-(*b)->id);
271 }
272
273static void load_builtin_compressions(void)
274 {
275 int got_write_lock = 0;
276
277 CRYPTO_r_lock(CRYPTO_LOCK_SSL);
278 if (ssl_comp_methods == NULL)
279 {
280 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
281 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
282 got_write_lock = 1;
283
284 if (ssl_comp_methods == NULL)
285 {
286 SSL_COMP *comp = NULL;
287
288 MemCheck_off();
289 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp);
290 if (ssl_comp_methods != NULL)
291 {
292 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
293 if (comp != NULL)
294 {
295 comp->method=COMP_zlib();
296 if (comp->method
297 && comp->method->type == NID_undef)
298 OPENSSL_free(comp);
299 else
300 {
301 comp->id=SSL_COMP_ZLIB_IDX;
302 comp->name=comp->method->name;
303 sk_SSL_COMP_push(ssl_comp_methods,comp);
304 }
305 }
306 }
307 MemCheck_on();
308 }
309 }
310
311 if (got_write_lock)
312 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
313 else
314 CRYPTO_r_unlock(CRYPTO_LOCK_SSL);
315 }
316#endif
317
318int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
319 const EVP_MD **md, SSL_COMP **comp)
320 {
321 int i;
322 SSL_CIPHER *c;
323
324 c=s->cipher;
325 if (c == NULL) return(0);
326 if (comp != NULL)
327 {
328 SSL_COMP ctmp;
329#ifndef OPENSSL_NO_COMP
330 load_builtin_compressions();
331#endif
332
333 *comp=NULL;
334 ctmp.id=s->compress_meth;
335 if (ssl_comp_methods != NULL)
336 {
337 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
338 if (i >= 0)
339 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
340 else
341 *comp=NULL;
342 }
343 }
344
345 if ((enc == NULL) || (md == NULL)) return(0);
346
347 switch (c->algorithms & SSL_ENC_MASK)
348 {
349 case SSL_DES:
350 i=SSL_ENC_DES_IDX;
351 break;
352 case SSL_3DES:
353 i=SSL_ENC_3DES_IDX;
354 break;
355 case SSL_RC4:
356 i=SSL_ENC_RC4_IDX;
357 break;
358 case SSL_RC2:
359 i=SSL_ENC_RC2_IDX;
360 break;
361 case SSL_IDEA:
362 i=SSL_ENC_IDEA_IDX;
363 break;
364 case SSL_eNULL:
365 i=SSL_ENC_NULL_IDX;
366 break;
367 case SSL_AES:
368 switch(c->alg_bits)
369 {
370 case 128: i=SSL_ENC_AES128_IDX; break;
371 case 256: i=SSL_ENC_AES256_IDX; break;
372 default: i=-1; break;
373 }
374 break;
375 case SSL_CAMELLIA:
376 switch(c->alg_bits)
377 {
378 case 128: i=SSL_ENC_CAMELLIA128_IDX; break;
379 case 256: i=SSL_ENC_CAMELLIA256_IDX; break;
380 default: i=-1; break;
381 }
382 break;
383 case SSL_SEED:
384 i=SSL_ENC_SEED_IDX;
385 break;
386
387 default:
388 i= -1;
389 break;
390 }
391
392 if ((i < 0) || (i >= SSL_ENC_NUM_IDX))
393 *enc=NULL;
394 else
395 {
396 if (i == SSL_ENC_NULL_IDX)
397 *enc=EVP_enc_null();
398 else
399 *enc=ssl_cipher_methods[i];
400 }
401
402 switch (c->algorithms & SSL_MAC_MASK)
403 {
404 case SSL_MD5:
405 i=SSL_MD_MD5_IDX;
406 break;
407 case SSL_SHA1:
408 i=SSL_MD_SHA1_IDX;
409 break;
410 default:
411 i= -1;
412 break;
413 }
414 if ((i < 0) || (i >= SSL_MD_NUM_IDX))
415 *md=NULL;
416 else
417 *md=ssl_digest_methods[i];
418
419 if ((*enc != NULL) && (*md != NULL))
420 return(1);
421 else
422 return(0);
423 }
424
425#define ITEM_SEP(a) \
426 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
427
428static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
429 CIPHER_ORDER **tail)
430 {
431 if (curr == *tail) return;
432 if (curr == *head)
433 *head=curr->next;
434 if (curr->prev != NULL)
435 curr->prev->next=curr->next;
436 if (curr->next != NULL) /* should always be true */
437 curr->next->prev=curr->prev;
438 (*tail)->next=curr;
439 curr->prev= *tail;
440 curr->next=NULL;
441 *tail=curr;
442 }
443
444struct disabled_masks { /* This is a kludge no longer needed with OpenSSL 0.9.9,
445 * where 128-bit and 256-bit algorithms simply will get
446 * separate bits. */
447 unsigned long mask; /* everything except m256 */
448 unsigned long m256; /* applies to 256-bit algorithms only */
449};
450
451static struct disabled_masks ssl_cipher_get_disabled(void)
452 {
453 unsigned long mask;
454 unsigned long m256;
455 struct disabled_masks ret;
456
457 mask = SSL_kFZA;
458#ifdef OPENSSL_NO_RSA
459 mask |= SSL_aRSA|SSL_kRSA;
460#endif
461#ifdef OPENSSL_NO_DSA
462 mask |= SSL_aDSS;
463#endif
464#ifdef OPENSSL_NO_DH
465 mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH;
466#endif
467#ifdef OPENSSL_NO_KRB5
468 mask |= SSL_kKRB5|SSL_aKRB5;
469#endif
470#ifdef OPENSSL_NO_ECDH
471 mask |= SSL_kECDH|SSL_kECDHE;
472#endif
473#ifdef SSL_FORBID_ENULL
474 mask |= SSL_eNULL;
475#endif
476
477 mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0;
478 mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0;
479 mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0;
480 mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0;
481 mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0;
482 mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0;
483 mask |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0;
484
485 mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0;
486 mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0;
487
488 /* finally consider algorithms where mask and m256 differ */
489 m256 = mask;
490 mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0;
491 mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0;
492 m256 |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES:0;
493 m256 |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA:0;
494
495 ret.mask = mask;
496 ret.m256 = m256;
497 return ret;
498 }
499
500static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
501 int num_of_ciphers, unsigned long mask, unsigned long m256,
502 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p,
503 CIPHER_ORDER **tail_p)
504 {
505 int i, co_list_num;
506 SSL_CIPHER *c;
507
508 /*
509 * We have num_of_ciphers descriptions compiled in, depending on the
510 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
511 * These will later be sorted in a linked list with at most num
512 * entries.
513 */
514
515 /* Get the initial list of ciphers */
516 co_list_num = 0; /* actual count of ciphers */
517 for (i = 0; i < num_of_ciphers; i++)
518 {
519 c = ssl_method->get_cipher(i);
520#define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask))
521 /* drop those that use any of that is not available */
522#ifdef OPENSSL_FIPS
523 if ((c != NULL) && c->valid && !IS_MASKED(c)
524 && (!FIPS_mode() || (c->algo_strength & SSL_FIPS)))
525#else
526 if ((c != NULL) && c->valid && !IS_MASKED(c))
527#endif
528 {
529 co_list[co_list_num].cipher = c;
530 co_list[co_list_num].next = NULL;
531 co_list[co_list_num].prev = NULL;
532 co_list[co_list_num].active = 0;
533 co_list_num++;
534#ifdef KSSL_DEBUG
535 printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms);
536#endif /* KSSL_DEBUG */
537 /*
538 if (!sk_push(ca_list,(char *)c)) goto err;
539 */
540 }
541 }
542
543 /*
544 * Prepare linked list from list entries
545 */
546 for (i = 1; i < co_list_num - 1; i++)
547 {
548 co_list[i].prev = &(co_list[i-1]);
549 co_list[i].next = &(co_list[i+1]);
550 }
551 if (co_list_num > 0)
552 {
553 (*head_p) = &(co_list[0]);
554 (*head_p)->prev = NULL;
555 (*head_p)->next = &(co_list[1]);
556 (*tail_p) = &(co_list[co_list_num - 1]);
557 (*tail_p)->prev = &(co_list[co_list_num - 2]);
558 (*tail_p)->next = NULL;
559 }
560 }
561
562static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list,
563 int num_of_group_aliases, unsigned long mask,
564 CIPHER_ORDER *head)
565 {
566 CIPHER_ORDER *ciph_curr;
567 SSL_CIPHER **ca_curr;
568 int i;
569
570 /*
571 * First, add the real ciphers as already collected
572 */
573 ciph_curr = head;
574 ca_curr = ca_list;
575 while (ciph_curr != NULL)
576 {
577 *ca_curr = ciph_curr->cipher;
578 ca_curr++;
579 ciph_curr = ciph_curr->next;
580 }
581
582 /*
583 * Now we add the available ones from the cipher_aliases[] table.
584 * They represent either an algorithm, that must be fully
585 * supported (not match any bit in mask) or represent a cipher
586 * strength value (will be added in any case because algorithms=0).
587 */
588 for (i = 0; i < num_of_group_aliases; i++)
589 {
590 if ((i == 0) || /* always fetch "ALL" */
591 !(cipher_aliases[i].algorithms & mask))
592 {
593 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
594 ca_curr++;
595 }
596 }
597
598 *ca_curr = NULL; /* end of list */
599 }
600
601static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_version,
602 unsigned long algorithms, unsigned long mask,
603 unsigned long algo_strength, unsigned long mask_strength,
604 int rule, int strength_bits, CIPHER_ORDER *co_list,
605 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
606 {
607 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2;
608 SSL_CIPHER *cp;
609 unsigned long ma, ma_s;
610
611#ifdef CIPHER_DEBUG
612 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n",
613 rule, algorithms, mask, algo_strength, mask_strength,
614 strength_bits);
615#endif
616
617 curr = head = *head_p;
618 curr2 = head;
619 tail2 = tail = *tail_p;
620 for (;;)
621 {
622 if ((curr == NULL) || (curr == tail2)) break;
623 curr = curr2;
624 curr2 = curr->next;
625
626 cp = curr->cipher;
627
628 /* If explicit cipher suite, match only that one for its own protocol version.
629 * Usual selection criteria will be used for similar ciphersuites from other version! */
630
631 if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version)
632 {
633 if (cp->id != cipher_id)
634 continue;
635 }
636
637 /*
638 * Selection criteria is either the number of strength_bits
639 * or the algorithm used.
640 */
641 else if (strength_bits == -1)
642 {
643 ma = mask & cp->algorithms;
644 ma_s = mask_strength & cp->algo_strength;
645
646#ifdef CIPHER_DEBUG
647 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength);
648 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength);
649#endif
650 /*
651 * Select: if none of the mask bit was met from the
652 * cipher or not all of the bits were met, the
653 * selection does not apply.
654 */
655 if (((ma == 0) && (ma_s == 0)) ||
656 ((ma & algorithms) != ma) ||
657 ((ma_s & algo_strength) != ma_s))
658 continue; /* does not apply */
659 }
660 else if (strength_bits != cp->strength_bits)
661 continue; /* does not apply */
662
663#ifdef CIPHER_DEBUG
664 printf("Action = %d\n", rule);
665#endif
666
667 /* add the cipher if it has not been added yet. */
668 if (rule == CIPHER_ADD)
669 {
670 if (!curr->active)
671 {
672 int add_this_cipher = 1;
673
674 if (((cp->algorithms & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0))
675 {
676 /* Make sure "ECCdraft" ciphersuites are activated only if
677 * *explicitly* requested, but not implicitly (such as
678 * as part of the "AES" alias). */
679
680 add_this_cipher = (mask & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0 || cipher_id != 0;
681 }
682
683 if (add_this_cipher)
684 {
685 ll_append_tail(&head, curr, &tail);
686 curr->active = 1;
687 }
688 }
689 }
690 /* Move the added cipher to this location */
691 else if (rule == CIPHER_ORD)
692 {
693 if (curr->active)
694 {
695 ll_append_tail(&head, curr, &tail);
696 }
697 }
698 else if (rule == CIPHER_DEL)
699 curr->active = 0;
700 else if (rule == CIPHER_KILL)
701 {
702 if (head == curr)
703 head = curr->next;
704 else
705 curr->prev->next = curr->next;
706 if (tail == curr)
707 tail = curr->prev;
708 curr->active = 0;
709 if (curr->next != NULL)
710 curr->next->prev = curr->prev;
711 if (curr->prev != NULL)
712 curr->prev->next = curr->next;
713 curr->next = NULL;
714 curr->prev = NULL;
715 }
716 }
717
718 *head_p = head;
719 *tail_p = tail;
720 }
721
722static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list,
723 CIPHER_ORDER **head_p,
724 CIPHER_ORDER **tail_p)
725 {
726 int max_strength_bits, i, *number_uses;
727 CIPHER_ORDER *curr;
728
729 /*
730 * This routine sorts the ciphers with descending strength. The sorting
731 * must keep the pre-sorted sequence, so we apply the normal sorting
732 * routine as '+' movement to the end of the list.
733 */
734 max_strength_bits = 0;
735 curr = *head_p;
736 while (curr != NULL)
737 {
738 if (curr->active &&
739 (curr->cipher->strength_bits > max_strength_bits))
740 max_strength_bits = curr->cipher->strength_bits;
741 curr = curr->next;
742 }
743
744 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
745 if (!number_uses)
746 {
747 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE);
748 return(0);
749 }
750 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
751
752 /*
753 * Now find the strength_bits values actually used
754 */
755 curr = *head_p;
756 while (curr != NULL)
757 {
758 if (curr->active)
759 number_uses[curr->cipher->strength_bits]++;
760 curr = curr->next;
761 }
762 /*
763 * Go through the list of used strength_bits values in descending
764 * order.
765 */
766 for (i = max_strength_bits; i >= 0; i--)
767 if (number_uses[i] > 0)
768 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i,
769 co_list, head_p, tail_p);
770
771 OPENSSL_free(number_uses);
772 return(1);
773 }
774
775static int ssl_cipher_process_rulestr(const char *rule_str,
776 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p,
777 CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list)
778 {
779 unsigned long algorithms, mask, algo_strength, mask_strength;
780 const char *l, *start, *buf;
781 int j, multi, found, rule, retval, ok, buflen;
782 unsigned long cipher_id = 0, ssl_version = 0;
783 char ch;
784
785 retval = 1;
786 l = rule_str;
787 for (;;)
788 {
789 ch = *l;
790
791 if (ch == '\0')
792 break; /* done */
793 if (ch == '-')
794 { rule = CIPHER_DEL; l++; }
795 else if (ch == '+')
796 { rule = CIPHER_ORD; l++; }
797 else if (ch == '!')
798 { rule = CIPHER_KILL; l++; }
799 else if (ch == '@')
800 { rule = CIPHER_SPECIAL; l++; }
801 else
802 { rule = CIPHER_ADD; }
803
804 if (ITEM_SEP(ch))
805 {
806 l++;
807 continue;
808 }
809
810 algorithms = mask = algo_strength = mask_strength = 0;
811
812 start=l;
813 for (;;)
814 {
815 ch = *l;
816 buf = l;
817 buflen = 0;
818#ifndef CHARSET_EBCDIC
819 while ( ((ch >= 'A') && (ch <= 'Z')) ||
820 ((ch >= '0') && (ch <= '9')) ||
821 ((ch >= 'a') && (ch <= 'z')) ||
822 (ch == '-'))
823#else
824 while ( isalnum(ch) || (ch == '-'))
825#endif
826 {
827 ch = *(++l);
828 buflen++;
829 }
830
831 if (buflen == 0)
832 {
833 /*
834 * We hit something we cannot deal with,
835 * it is no command or separator nor
836 * alphanumeric, so we call this an error.
837 */
838 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
839 SSL_R_INVALID_COMMAND);
840 retval = found = 0;
841 l++;
842 break;
843 }
844
845 if (rule == CIPHER_SPECIAL)
846 {
847 found = 0; /* unused -- avoid compiler warning */
848 break; /* special treatment */
849 }
850
851 /* check for multi-part specification */
852 if (ch == '+')
853 {
854 multi=1;
855 l++;
856 }
857 else
858 multi=0;
859
860 /*
861 * Now search for the cipher alias in the ca_list. Be careful
862 * with the strncmp, because the "buflen" limitation
863 * will make the rule "ADH:SOME" and the cipher
864 * "ADH-MY-CIPHER" look like a match for buflen=3.
865 * So additionally check whether the cipher name found
866 * has the correct length. We can save a strlen() call:
867 * just checking for the '\0' at the right place is
868 * sufficient, we have to strncmp() anyway. (We cannot
869 * use strcmp(), because buf is not '\0' terminated.)
870 */
871 j = found = 0;
872 cipher_id = 0;
873 ssl_version = 0;
874 while (ca_list[j])
875 {
876 if (!strncmp(buf, ca_list[j]->name, buflen) &&
877 (ca_list[j]->name[buflen] == '\0'))
878 {
879 found = 1;
880 break;
881 }
882 else
883 j++;
884 }
885 if (!found)
886 break; /* ignore this entry */
887
888 /* New algorithms:
889 * 1 - any old restrictions apply outside new mask
890 * 2 - any new restrictions apply outside old mask
891 * 3 - enforce old & new where masks intersect
892 */
893 algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */
894 (ca_list[j]->algorithms & ~mask) | /* 2 */
895 (algorithms & ca_list[j]->algorithms); /* 3 */
896 mask |= ca_list[j]->mask;
897 algo_strength = (algo_strength & ~ca_list[j]->mask_strength) |
898 (ca_list[j]->algo_strength & ~mask_strength) |
899 (algo_strength & ca_list[j]->algo_strength);
900 mask_strength |= ca_list[j]->mask_strength;
901
902 /* explicit ciphersuite found */
903 if (ca_list[j]->valid)
904 {
905 cipher_id = ca_list[j]->id;
906 ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK;
907 break;
908 }
909
910 if (!multi) break;
911 }
912
913 /*
914 * Ok, we have the rule, now apply it
915 */
916 if (rule == CIPHER_SPECIAL)
917 { /* special command */
918 ok = 0;
919 if ((buflen == 8) &&
920 !strncmp(buf, "STRENGTH", 8))
921 ok = ssl_cipher_strength_sort(co_list,
922 head_p, tail_p);
923 else
924 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
925 SSL_R_INVALID_COMMAND);
926 if (ok == 0)
927 retval = 0;
928 /*
929 * We do not support any "multi" options
930 * together with "@", so throw away the
931 * rest of the command, if any left, until
932 * end or ':' is found.
933 */
934 while ((*l != '\0') && !ITEM_SEP(*l))
935 l++;
936 }
937 else if (found)
938 {
939 ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask,
940 algo_strength, mask_strength, rule, -1,
941 co_list, head_p, tail_p);
942 }
943 else
944 {
945 while ((*l != '\0') && !ITEM_SEP(*l))
946 l++;
947 }
948 if (*l == '\0') break; /* done */
949 }
950
951 return(retval);
952 }
953
954STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
955 STACK_OF(SSL_CIPHER) **cipher_list,
956 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
957 const char *rule_str)
958 {
959 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
960 unsigned long disabled_mask;
961 unsigned long disabled_m256;
962 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
963 const char *rule_p;
964 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
965 SSL_CIPHER **ca_list = NULL;
966
967 /*
968 * Return with error if nothing to do.
969 */
970 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
971 return NULL;
972
973 /*
974 * To reduce the work to do we only want to process the compiled
975 * in algorithms, so we first get the mask of disabled ciphers.
976 */
977 {
978 struct disabled_masks d;
979 d = ssl_cipher_get_disabled();
980 disabled_mask = d.mask;
981 disabled_m256 = d.m256;
982 }
983
984 /*
985 * Now we have to collect the available ciphers from the compiled
986 * in ciphers. We cannot get more than the number compiled in, so
987 * it is used for allocation.
988 */
989 num_of_ciphers = ssl_method->num_ciphers();
990#ifdef KSSL_DEBUG
991 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
992#endif /* KSSL_DEBUG */
993 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
994 if (co_list == NULL)
995 {
996 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
997 return(NULL); /* Failure */
998 }
999
1000 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask,
1001 disabled_m256, co_list, &head, &tail);
1002
1003 /*
1004 * We also need cipher aliases for selecting based on the rule_str.
1005 * There might be two types of entries in the rule_str: 1) names
1006 * of ciphers themselves 2) aliases for groups of ciphers.
1007 * For 1) we need the available ciphers and for 2) the cipher
1008 * groups of cipher_aliases added together in one list (otherwise
1009 * we would be happy with just the cipher_aliases table).
1010 */
1011 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
1012 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
1013 ca_list =
1014 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
1015 if (ca_list == NULL)
1016 {
1017 OPENSSL_free(co_list);
1018 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1019 return(NULL); /* Failure */
1020 }
1021 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
1022 (disabled_mask & disabled_m256), head);
1023
1024 /*
1025 * If the rule_string begins with DEFAULT, apply the default rule
1026 * before using the (possibly available) additional rules.
1027 */
1028 ok = 1;
1029 rule_p = rule_str;
1030 if (strncmp(rule_str,"DEFAULT",7) == 0)
1031 {
1032 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
1033 co_list, &head, &tail, ca_list);
1034 rule_p += 7;
1035 if (*rule_p == ':')
1036 rule_p++;
1037 }
1038
1039 if (ok && (strlen(rule_p) > 0))
1040 ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail,
1041 ca_list);
1042
1043 OPENSSL_free(ca_list); /* Not needed anymore */
1044
1045 if (!ok)
1046 { /* Rule processing failure */
1047 OPENSSL_free(co_list);
1048 return(NULL);
1049 }
1050 /*
1051 * Allocate new "cipherstack" for the result, return with error
1052 * if we cannot get one.
1053 */
1054 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL)
1055 {
1056 OPENSSL_free(co_list);
1057 return(NULL);
1058 }
1059
1060 /*
1061 * The cipher selection for the list is done. The ciphers are added
1062 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1063 */
1064 for (curr = head; curr != NULL; curr = curr->next)
1065 {
1066#ifdef OPENSSL_FIPS
1067 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS))
1068#else
1069 if (curr->active)
1070#endif
1071 {
1072 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1073#ifdef CIPHER_DEBUG
1074 printf("<%s>\n",curr->cipher->name);
1075#endif
1076 }
1077 }
1078 OPENSSL_free(co_list); /* Not needed any longer */
1079
1080 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1081 if (tmp_cipher_list == NULL)
1082 {
1083 sk_SSL_CIPHER_free(cipherstack);
1084 return NULL;
1085 }
1086 if (*cipher_list != NULL)
1087 sk_SSL_CIPHER_free(*cipher_list);
1088 *cipher_list = cipherstack;
1089 if (*cipher_list_by_id != NULL)
1090 sk_SSL_CIPHER_free(*cipher_list_by_id);
1091 *cipher_list_by_id = tmp_cipher_list;
1092 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
1093
1094 return(cipherstack);
1095 }
1096
1097char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len)
1098 {
1099 int is_export,pkl,kl;
1100 const char *ver,*exp_str;
1101 const char *kx,*au,*enc,*mac;
1102 unsigned long alg,alg2,alg_s;
1103#ifdef KSSL_DEBUG
1104 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n";
1105#else
1106 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1107#endif /* KSSL_DEBUG */
1108
1109 alg=cipher->algorithms;
1110 alg_s=cipher->algo_strength;
1111 alg2=cipher->algorithm2;
1112
1113 is_export=SSL_C_IS_EXPORT(cipher);
1114 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1115 kl=SSL_C_EXPORT_KEYLENGTH(cipher);
1116 exp_str=is_export?" export":"";
1117
1118 if (alg & SSL_SSLV2)
1119 ver="SSLv2";
1120 else if (alg & SSL_SSLV3)
1121 ver="SSLv3";
1122 else
1123 ver="unknown";
1124
1125 switch (alg&SSL_MKEY_MASK)
1126 {
1127 case SSL_kRSA:
1128 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1129 break;
1130 case SSL_kDHr:
1131 kx="DH/RSA";
1132 break;
1133 case SSL_kDHd:
1134 kx="DH/DSS";
1135 break;
1136 case SSL_kKRB5: /* VRS */
1137 case SSL_KRB5: /* VRS */
1138 kx="KRB5";
1139 break;
1140 case SSL_kFZA:
1141 kx="Fortezza";
1142 break;
1143 case SSL_kEDH:
1144 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1145 break;
1146 case SSL_kECDH:
1147 case SSL_kECDHE:
1148 kx=is_export?"ECDH(<=163)":"ECDH";
1149 break;
1150 default:
1151 kx="unknown";
1152 }
1153
1154 switch (alg&SSL_AUTH_MASK)
1155 {
1156 case SSL_aRSA:
1157 au="RSA";
1158 break;
1159 case SSL_aDSS:
1160 au="DSS";
1161 break;
1162 case SSL_aDH:
1163 au="DH";
1164 break;
1165 case SSL_aKRB5: /* VRS */
1166 case SSL_KRB5: /* VRS */
1167 au="KRB5";
1168 break;
1169 case SSL_aFZA:
1170 case SSL_aNULL:
1171 au="None";
1172 break;
1173 case SSL_aECDSA:
1174 au="ECDSA";
1175 break;
1176 default:
1177 au="unknown";
1178 break;
1179 }
1180
1181 switch (alg&SSL_ENC_MASK)
1182 {
1183 case SSL_DES:
1184 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
1185 break;
1186 case SSL_3DES:
1187 enc="3DES(168)";
1188 break;
1189 case SSL_RC4:
1190 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1191 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1192 break;
1193 case SSL_RC2:
1194 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1195 break;
1196 case SSL_IDEA:
1197 enc="IDEA(128)";
1198 break;
1199 case SSL_eFZA:
1200 enc="Fortezza";
1201 break;
1202 case SSL_eNULL:
1203 enc="None";
1204 break;
1205 case SSL_AES:
1206 switch(cipher->strength_bits)
1207 {
1208 case 128: enc="AES(128)"; break;
1209 case 192: enc="AES(192)"; break;
1210 case 256: enc="AES(256)"; break;
1211 default: enc="AES(?""?""?)"; break;
1212 }
1213 break;
1214 case SSL_CAMELLIA:
1215 switch(cipher->strength_bits)
1216 {
1217 case 128: enc="Camellia(128)"; break;
1218 case 256: enc="Camellia(256)"; break;
1219 default: enc="Camellia(?""?""?)"; break;
1220 }
1221 break;
1222 case SSL_SEED:
1223 enc="SEED(128)";
1224 break;
1225
1226 default:
1227 enc="unknown";
1228 break;
1229 }
1230
1231 switch (alg&SSL_MAC_MASK)
1232 {
1233 case SSL_MD5:
1234 mac="MD5";
1235 break;
1236 case SSL_SHA1:
1237 mac="SHA1";
1238 break;
1239 default:
1240 mac="unknown";
1241 break;
1242 }
1243
1244 if (buf == NULL)
1245 {
1246 len=128;
1247 buf=OPENSSL_malloc(len);
1248 if (buf == NULL) return("OPENSSL_malloc Error");
1249 }
1250 else if (len < 128)
1251 return("Buffer too small");
1252
1253#ifdef KSSL_DEBUG
1254 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg);
1255#else
1256 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str);
1257#endif /* KSSL_DEBUG */
1258 return(buf);
1259 }
1260
1261char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1262 {
1263 int i;
1264
1265 if (c == NULL) return("(NONE)");
1266 i=(int)(c->id>>24L);
1267 if (i == 3)
1268 return("TLSv1/SSLv3");
1269 else if (i == 2)
1270 return("SSLv2");
1271 else
1272 return("unknown");
1273 }
1274
1275/* return the actual cipher being used */
1276const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1277 {
1278 if (c != NULL)
1279 return(c->name);
1280 return("(NONE)");
1281 }
1282
1283/* number of bits for symmetric cipher */
1284int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1285 {
1286 int ret=0;
1287
1288 if (c != NULL)
1289 {
1290 if (alg_bits != NULL) *alg_bits = c->alg_bits;
1291 ret = c->strength_bits;
1292 }
1293 return(ret);
1294 }
1295
1296SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1297 {
1298 SSL_COMP *ctmp;
1299 int i,nn;
1300
1301 if ((n == 0) || (sk == NULL)) return(NULL);
1302 nn=sk_SSL_COMP_num(sk);
1303 for (i=0; i<nn; i++)
1304 {
1305 ctmp=sk_SSL_COMP_value(sk,i);
1306 if (ctmp->id == n)
1307 return(ctmp);
1308 }
1309 return(NULL);
1310 }
1311
1312#ifdef OPENSSL_NO_COMP
1313void *SSL_COMP_get_compression_methods(void)
1314 {
1315 return NULL;
1316 }
1317int SSL_COMP_add_compression_method(int id, void *cm)
1318 {
1319 return 1;
1320 }
1321
1322const char *SSL_COMP_get_name(const void *comp)
1323 {
1324 return NULL;
1325 }
1326#else
1327STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1328 {
1329 load_builtin_compressions();
1330 return(ssl_comp_methods);
1331 }
1332
1333int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1334 {
1335 SSL_COMP *comp;
1336
1337 if (cm == NULL || cm->type == NID_undef)
1338 return 1;
1339
1340 /* According to draft-ietf-tls-compression-04.txt, the
1341 compression number ranges should be the following:
1342
1343 0 to 63: methods defined by the IETF
1344 64 to 192: external party methods assigned by IANA
1345 193 to 255: reserved for private use */
1346 if (id < 193 || id > 255)
1347 {
1348 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE);
1349 return 0;
1350 }
1351
1352 MemCheck_off();
1353 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1354 comp->id=id;
1355 comp->method=cm;
1356 load_builtin_compressions();
1357 if (ssl_comp_methods
1358 && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0)
1359 {
1360 OPENSSL_free(comp);
1361 MemCheck_on();
1362 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID);
1363 return(1);
1364 }
1365 else if ((ssl_comp_methods == NULL)
1366 || !sk_SSL_COMP_push(ssl_comp_methods,comp))
1367 {
1368 OPENSSL_free(comp);
1369 MemCheck_on();
1370 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
1371 return(1);
1372 }
1373 else
1374 {
1375 MemCheck_on();
1376 return(0);
1377 }
1378 }
1379
1380const char *SSL_COMP_get_name(const COMP_METHOD *comp)
1381 {
1382 if (comp)
1383 return comp->name;
1384 return NULL;
1385 }
1386
1387#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-27 15:58:22 +0000