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 (c) 1998-2006 The OpenSSL Project. All rights reserved.
113 *
114 * Redistribution and use in source and binary forms, with or without
115 * modification, are permitted provided that the following conditions
116 * are met:
117 *
118 * 1. Redistributions of source code must retain the above copyright
119 * notice, this list of conditions and the following disclaimer.
120 *
121 * 2. Redistributions in binary form must reproduce the above copyright
122 * notice, this list of conditions and the following disclaimer in
123 * the documentation and/or other materials provided with the
124 * distribution.
125 *
126 * 3. All advertising materials mentioning features or use of this
127 * software must display the following acknowledgment:
128 * "This product includes software developed by the OpenSSL Project
129 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
130 *
131 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
132 * endorse or promote products derived from this software without
133 * prior written permission. For written permission, please contact
134 * openssl-core@openssl.org.
135 *
136 * 5. Products derived from this software may not be called "OpenSSL"
137 * nor may "OpenSSL" appear in their names without prior written
138 * permission of the OpenSSL Project.
139 *
140 * 6. Redistributions of any form whatsoever must retain the following
141 * acknowledgment:
142 * "This product includes software developed by the OpenSSL Project
143 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
144 *
145 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
146 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
147 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
148 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
149 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
150 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
151 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
152 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
153 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
154 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
155 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
156 * OF THE POSSIBILITY OF SUCH DAMAGE.
157 * ====================================================================
158 *
159 * This product includes cryptographic software written by Eric Young
160 * (eay@cryptsoft.com). This product includes software written by Tim
161 * Hudson (tjh@cryptsoft.com).
162 *
163 */
164 /* ====================================================================
165 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
166 * ECC cipher suite support in OpenSSL originally developed by
167 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
168 */
169 #include <stdio.h>
170 #include <openssl/objects.h>
171 #include <openssl/comp.h>
172 #include <openssl/fips.h>
173 #include "ssl_locl.h"
174
175 #define SSL_ENC_DES_IDX 0
176 #define SSL_ENC_3DES_IDX 1
177 #define SSL_ENC_RC4_IDX 2
178 #define SSL_ENC_RC2_IDX 3
179 #define SSL_ENC_IDEA_IDX 4
180 #define SSL_ENC_eFZA_IDX 5
181 #define SSL_ENC_NULL_IDX 6
182 #define SSL_ENC_AES128_IDX 7
183 #define SSL_ENC_AES256_IDX 8
184 #define SSL_ENC_NUM_IDX 9
185
186 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={
187 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL
188 };
189
190 static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL;
191
192 #define SSL_MD_MD5_IDX 0
193 #define SSL_MD_SHA1_IDX 1
194 #define SSL_MD_NUM_IDX 2
195 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={
196 NULL,NULL,
197 };
198
199 #define CIPHER_ADD 1
200 #define CIPHER_KILL 2
201 #define CIPHER_DEL 3
202 #define CIPHER_ORD 4
203 #define CIPHER_SPECIAL 5
204
205 typedef struct cipher_order_st
206 {
207 SSL_CIPHER *cipher;
208 int active;
209 int dead;
210 struct cipher_order_st *next,*prev;
211 } CIPHER_ORDER;
212
213 static const SSL_CIPHER cipher_aliases[]={
214 /* Don't include eNULL unless specifically enabled. */
215 {0,SSL_TXT_ALL, 0,SSL_ALL & ~SSL_eNULL, SSL_ALL ,0,0,0,SSL_ALL,SSL_ALL}, /* must be first */
216 {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, /* COMPLEMENT OF ALL */
217 {0,SSL_TXT_CMPDEF,0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK,0},
218 {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0}, /* VRS Kerberos5 */
219 {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0},
220 {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0},
221 {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0},
222 {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0},
223 {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,0,0,0,SSL_MKEY_MASK,0},
224 {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0},
225 {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0},
226
227 {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0}, /* VRS Kerberos5 */
228 {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0},
229 {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0},
230 {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,0,0,0,SSL_AUTH_MASK,0},
231 {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0},
232 {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0},
233 {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0},
234
235 {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0},
236 {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0},
237 {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0},
238 {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0},
239 #ifndef OPENSSL_NO_IDEA
240 {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0},
241 #endif
242 {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0},
243 {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,0,0,0,SSL_ENC_MASK,0},
244 {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0},
245
246 {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0},
247 {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0},
248 {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0},
249
250 {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0},
251 {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
252 {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
253 {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0},
254 {0,SSL_TXT_FZA, 0,SSL_FZA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK,0},
255
256 {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0},
257 {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0},
258 {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0},
259
260 {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK},
261 {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK},
262 {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK},
263 {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK},
264 {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK},
265 {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK},
266 {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK},
267 {0,SSL_TXT_FIPS, 0, 0, SSL_FIPS, 0,0,0,0,SSL_FIPS|SSL_STRONG_NONE},
268 };
269
270 static int init_ciphers=1;
271
load_ciphers(void)272 static void load_ciphers(void)
273 {
274 ssl_cipher_methods[SSL_ENC_DES_IDX]=
275 EVP_get_cipherbyname(SN_des_cbc);
276 ssl_cipher_methods[SSL_ENC_3DES_IDX]=
277 EVP_get_cipherbyname(SN_des_ede3_cbc);
278 ssl_cipher_methods[SSL_ENC_RC4_IDX]=
279 EVP_get_cipherbyname(SN_rc4);
280 ssl_cipher_methods[SSL_ENC_RC2_IDX]=
281 EVP_get_cipherbyname(SN_rc2_cbc);
282 #ifndef OPENSSL_NO_IDEA
283 ssl_cipher_methods[SSL_ENC_IDEA_IDX]=
284 EVP_get_cipherbyname(SN_idea_cbc);
285 #else
286 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL;
287 #endif
288 ssl_cipher_methods[SSL_ENC_AES128_IDX]=
289 EVP_get_cipherbyname(SN_aes_128_cbc);
290 ssl_cipher_methods[SSL_ENC_AES256_IDX]=
291 EVP_get_cipherbyname(SN_aes_256_cbc);
292
293 ssl_digest_methods[SSL_MD_MD5_IDX]=
294 EVP_get_digestbyname(SN_md5);
295 ssl_digest_methods[SSL_MD_SHA1_IDX]=
296 EVP_get_digestbyname(SN_sha1);
297 init_ciphers=0;
298 }
299
ssl_cipher_get_evp(const SSL_SESSION * s,const EVP_CIPHER ** enc,const EVP_MD ** md,SSL_COMP ** comp)300 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
301 const EVP_MD **md, SSL_COMP **comp)
302 {
303 int i;
304 SSL_CIPHER *c;
305
306 c=s->cipher;
307 if (c == NULL) return(0);
308 if (comp != NULL)
309 {
310 SSL_COMP ctmp;
311
312 if (s->compress_meth == 0)
313 *comp=NULL;
314 else if (ssl_comp_methods == NULL)
315 {
316 /* bad */
317 *comp=NULL;
318 }
319 else
320 {
321
322 ctmp.id=s->compress_meth;
323 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp);
324 if (i >= 0)
325 *comp=sk_SSL_COMP_value(ssl_comp_methods,i);
326 else
327 *comp=NULL;
328 }
329 }
330
331 if ((enc == NULL) || (md == NULL)) return(0);
332
333 switch (c->algorithms & SSL_ENC_MASK)
334 {
335 case SSL_DES:
336 i=SSL_ENC_DES_IDX;
337 break;
338 case SSL_3DES:
339 i=SSL_ENC_3DES_IDX;
340 break;
341 case SSL_RC4:
342 i=SSL_ENC_RC4_IDX;
343 break;
344 case SSL_RC2:
345 i=SSL_ENC_RC2_IDX;
346 break;
347 case SSL_IDEA:
348 i=SSL_ENC_IDEA_IDX;
349 break;
350 case SSL_eNULL:
351 i=SSL_ENC_NULL_IDX;
352 break;
353 case SSL_AES:
354 switch(c->alg_bits)
355 {
356 case 128: i=SSL_ENC_AES128_IDX; break;
357 case 256: i=SSL_ENC_AES256_IDX; break;
358 default: i=-1; break;
359 }
360 break;
361 default:
362 i= -1;
363 break;
364 }
365
366 if ((i < 0) || (i >= SSL_ENC_NUM_IDX))
367 *enc=NULL;
368 else
369 {
370 if (i == SSL_ENC_NULL_IDX)
371 *enc=EVP_enc_null();
372 else
373 *enc=ssl_cipher_methods[i];
374 }
375
376 switch (c->algorithms & SSL_MAC_MASK)
377 {
378 case SSL_MD5:
379 i=SSL_MD_MD5_IDX;
380 break;
381 case SSL_SHA1:
382 i=SSL_MD_SHA1_IDX;
383 break;
384 default:
385 i= -1;
386 break;
387 }
388 if ((i < 0) || (i >= SSL_MD_NUM_IDX))
389 *md=NULL;
390 else
391 *md=ssl_digest_methods[i];
392
393 if ((*enc != NULL) && (*md != NULL))
394 return(1);
395 else
396 return(0);
397 }
398
399 #define ITEM_SEP(a) \
400 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ','))
401
ll_append_tail(CIPHER_ORDER ** head,CIPHER_ORDER * curr,CIPHER_ORDER ** tail)402 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr,
403 CIPHER_ORDER **tail)
404 {
405 if (curr == *tail) return;
406 if (curr == *head)
407 *head=curr->next;
408 if (curr->prev != NULL)
409 curr->prev->next=curr->next;
410 if (curr->next != NULL) /* should always be true */
411 curr->next->prev=curr->prev;
412 (*tail)->next=curr;
413 curr->prev= *tail;
414 curr->next=NULL;
415 *tail=curr;
416 }
417
418 struct disabled_masks { /* This is a kludge no longer needed with OpenSSL 0.9.9,
419 * where 128-bit and 256-bit algorithms simply will get
420 * separate bits. */
421 unsigned long mask; /* everything except m256 */
422 unsigned long m256; /* applies to 256-bit algorithms only */
423 };
424
ssl_cipher_get_disabled(void)425 struct disabled_masks ssl_cipher_get_disabled(void)
426 {
427 unsigned long mask;
428 unsigned long m256;
429 struct disabled_masks ret;
430
431 mask = SSL_kFZA;
432 #ifdef OPENSSL_NO_RSA
433 mask |= SSL_aRSA|SSL_kRSA;
434 #endif
435 #ifdef OPENSSL_NO_DSA
436 mask |= SSL_aDSS;
437 #endif
438 #ifdef OPENSSL_NO_DH
439 mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH;
440 #endif
441 #ifdef OPENSSL_NO_KRB5
442 mask |= SSL_kKRB5|SSL_aKRB5;
443 #endif
444
445 #ifdef SSL_FORBID_ENULL
446 mask |= SSL_eNULL;
447 #endif
448
449 mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0;
450 mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0;
451 mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0;
452 mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0;
453 mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0;
454 mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0;
455
456 mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0;
457 mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0;
458
459 /* finally consider algorithms where mask and m256 differ */
460 m256 = mask;
461 mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0;
462 m256 |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES:0;
463
464 ret.mask = mask;
465 ret.m256 = m256;
466 return ret;
467 }
468
ssl_cipher_collect_ciphers(const SSL_METHOD * ssl_method,int num_of_ciphers,unsigned long mask,unsigned long m256,CIPHER_ORDER * co_list,CIPHER_ORDER ** head_p,CIPHER_ORDER ** tail_p)469 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
470 int num_of_ciphers, unsigned long mask, unsigned long m256,
471 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p,
472 CIPHER_ORDER **tail_p)
473 {
474 int i, co_list_num;
475 SSL_CIPHER *c;
476
477 /*
478 * We have num_of_ciphers descriptions compiled in, depending on the
479 * method selected (SSLv2 and/or SSLv3, TLSv1 etc).
480 * These will later be sorted in a linked list with at most num
481 * entries.
482 */
483
484 /* Get the initial list of ciphers */
485 co_list_num = 0; /* actual count of ciphers */
486 for (i = 0; i < num_of_ciphers; i++)
487 {
488 c = ssl_method->get_cipher(i);
489 /* drop those that use any of that is not available */
490 #define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask))
491 #ifdef OPENSSL_FIPS
492 if ((c != NULL) && c->valid && !IS_MASKED(c)
493 && (!FIPS_mode() || (c->algo_strength & SSL_FIPS)))
494 #else
495 if ((c != NULL) && c->valid && !IS_MASKED(c))
496 #endif
497 {
498 co_list[co_list_num].cipher = c;
499 co_list[co_list_num].next = NULL;
500 co_list[co_list_num].prev = NULL;
501 co_list[co_list_num].active = 0;
502 co_list_num++;
503 #ifdef KSSL_DEBUG
504 printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms);
505 #endif /* KSSL_DEBUG */
506 /*
507 if (!sk_push(ca_list,(char *)c)) goto err;
508 */
509 }
510 }
511
512 /*
513 * Prepare linked list from list entries
514 */
515 for (i = 1; i < co_list_num - 1; i++)
516 {
517 co_list[i].prev = &(co_list[i-1]);
518 co_list[i].next = &(co_list[i+1]);
519 }
520 if (co_list_num > 0)
521 {
522 (*head_p) = &(co_list[0]);
523 (*head_p)->prev = NULL;
524 (*head_p)->next = &(co_list[1]);
525 (*tail_p) = &(co_list[co_list_num - 1]);
526 (*tail_p)->prev = &(co_list[co_list_num - 2]);
527 (*tail_p)->next = NULL;
528 }
529 }
530
ssl_cipher_collect_aliases(SSL_CIPHER ** ca_list,int num_of_group_aliases,unsigned long mask,CIPHER_ORDER * head)531 static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list,
532 int num_of_group_aliases, unsigned long mask,
533 CIPHER_ORDER *head)
534 {
535 CIPHER_ORDER *ciph_curr;
536 SSL_CIPHER **ca_curr;
537 int i;
538
539 /*
540 * First, add the real ciphers as already collected
541 */
542 ciph_curr = head;
543 ca_curr = ca_list;
544 while (ciph_curr != NULL)
545 {
546 *ca_curr = ciph_curr->cipher;
547 ca_curr++;
548 ciph_curr = ciph_curr->next;
549 }
550
551 /*
552 * Now we add the available ones from the cipher_aliases[] table.
553 * They represent either an algorithm, that must be fully
554 * supported (not match any bit in mask) or represent a cipher
555 * strength value (will be added in any case because algorithms=0).
556 */
557 for (i = 0; i < num_of_group_aliases; i++)
558 {
559 if ((i == 0) || /* always fetch "ALL" */
560 !(cipher_aliases[i].algorithms & mask))
561 {
562 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i);
563 ca_curr++;
564 }
565 }
566
567 *ca_curr = NULL; /* end of list */
568 }
569
ssl_cipher_apply_rule(unsigned long cipher_id,unsigned long ssl_version,unsigned long algorithms,unsigned long mask,unsigned long algo_strength,unsigned long mask_strength,int rule,int strength_bits,CIPHER_ORDER * co_list,CIPHER_ORDER ** head_p,CIPHER_ORDER ** tail_p)570 static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_version,
571 unsigned long algorithms, unsigned long mask,
572 unsigned long algo_strength, unsigned long mask_strength,
573 int rule, int strength_bits, CIPHER_ORDER *co_list,
574 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
575 {
576 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2;
577 SSL_CIPHER *cp;
578 unsigned long ma, ma_s;
579
580 #ifdef CIPHER_DEBUG
581 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n",
582 rule, algorithms, mask, algo_strength, mask_strength,
583 strength_bits);
584 #endif
585
586 curr = head = *head_p;
587 curr2 = head;
588 tail2 = tail = *tail_p;
589 for (;;)
590 {
591 if ((curr == NULL) || (curr == tail2)) break;
592 curr = curr2;
593 curr2 = curr->next;
594
595 cp = curr->cipher;
596
597 /* If explicit cipher suite, match only that one for its own protocol version.
598 * Usual selection criteria will be used for similar ciphersuites from other version! */
599
600 if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version)
601 {
602 if (cp->id != cipher_id)
603 continue;
604 }
605
606 /*
607 * Selection criteria is either the number of strength_bits
608 * or the algorithm used.
609 */
610 else if (strength_bits == -1)
611 {
612 ma = mask & cp->algorithms;
613 ma_s = mask_strength & cp->algo_strength;
614
615 #ifdef CIPHER_DEBUG
616 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength);
617 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength);
618 #endif
619 /*
620 * Select: if none of the mask bit was met from the
621 * cipher or not all of the bits were met, the
622 * selection does not apply.
623 */
624 if (((ma == 0) && (ma_s == 0)) ||
625 ((ma & algorithms) != ma) ||
626 ((ma_s & algo_strength) != ma_s))
627 continue; /* does not apply */
628 }
629 else if (strength_bits != cp->strength_bits)
630 continue; /* does not apply */
631
632 #ifdef CIPHER_DEBUG
633 printf("Action = %d\n", rule);
634 #endif
635
636 /* add the cipher if it has not been added yet. */
637 if (rule == CIPHER_ADD)
638 {
639 if (!curr->active)
640 {
641 ll_append_tail(&head, curr, &tail);
642 curr->active = 1;
643 }
644 }
645 /* Move the added cipher to this location */
646 else if (rule == CIPHER_ORD)
647 {
648 if (curr->active)
649 {
650 ll_append_tail(&head, curr, &tail);
651 }
652 }
653 else if (rule == CIPHER_DEL)
654 curr->active = 0;
655 else if (rule == CIPHER_KILL)
656 {
657 if (head == curr)
658 head = curr->next;
659 else
660 curr->prev->next = curr->next;
661 if (tail == curr)
662 tail = curr->prev;
663 curr->active = 0;
664 if (curr->next != NULL)
665 curr->next->prev = curr->prev;
666 if (curr->prev != NULL)
667 curr->prev->next = curr->next;
668 curr->next = NULL;
669 curr->prev = NULL;
670 }
671 }
672
673 *head_p = head;
674 *tail_p = tail;
675 }
676
ssl_cipher_strength_sort(CIPHER_ORDER * co_list,CIPHER_ORDER ** head_p,CIPHER_ORDER ** tail_p)677 static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list,
678 CIPHER_ORDER **head_p,
679 CIPHER_ORDER **tail_p)
680 {
681 int max_strength_bits, i, *number_uses;
682 CIPHER_ORDER *curr;
683
684 /*
685 * This routine sorts the ciphers with descending strength. The sorting
686 * must keep the pre-sorted sequence, so we apply the normal sorting
687 * routine as '+' movement to the end of the list.
688 */
689 max_strength_bits = 0;
690 curr = *head_p;
691 while (curr != NULL)
692 {
693 if (curr->active &&
694 (curr->cipher->strength_bits > max_strength_bits))
695 max_strength_bits = curr->cipher->strength_bits;
696 curr = curr->next;
697 }
698
699 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int));
700 if (!number_uses)
701 {
702 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE);
703 return(0);
704 }
705 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int));
706
707 /*
708 * Now find the strength_bits values actually used
709 */
710 curr = *head_p;
711 while (curr != NULL)
712 {
713 if (curr->active)
714 number_uses[curr->cipher->strength_bits]++;
715 curr = curr->next;
716 }
717 /*
718 * Go through the list of used strength_bits values in descending
719 * order.
720 */
721 for (i = max_strength_bits; i >= 0; i--)
722 if (number_uses[i] > 0)
723 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i,
724 co_list, head_p, tail_p);
725
726 OPENSSL_free(number_uses);
727 return(1);
728 }
729
ssl_cipher_process_rulestr(const char * rule_str,CIPHER_ORDER * co_list,CIPHER_ORDER ** head_p,CIPHER_ORDER ** tail_p,SSL_CIPHER ** ca_list)730 static int ssl_cipher_process_rulestr(const char *rule_str,
731 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p,
732 CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list)
733 {
734 unsigned long algorithms, mask, algo_strength, mask_strength;
735 const char *l, *start, *buf;
736 int j, multi, found, rule, retval, ok, buflen;
737 unsigned long cipher_id = 0, ssl_version = 0;
738 char ch;
739
740 retval = 1;
741 l = rule_str;
742 for (;;)
743 {
744 ch = *l;
745
746 if (ch == '\0')
747 break; /* done */
748 if (ch == '-')
749 { rule = CIPHER_DEL; l++; }
750 else if (ch == '+')
751 { rule = CIPHER_ORD; l++; }
752 else if (ch == '!')
753 { rule = CIPHER_KILL; l++; }
754 else if (ch == '@')
755 { rule = CIPHER_SPECIAL; l++; }
756 else
757 { rule = CIPHER_ADD; }
758
759 if (ITEM_SEP(ch))
760 {
761 l++;
762 continue;
763 }
764
765 algorithms = mask = algo_strength = mask_strength = 0;
766
767 start=l;
768 for (;;)
769 {
770 ch = *l;
771 buf = l;
772 buflen = 0;
773 #ifndef CHARSET_EBCDIC
774 while ( ((ch >= 'A') && (ch <= 'Z')) ||
775 ((ch >= '0') && (ch <= '9')) ||
776 ((ch >= 'a') && (ch <= 'z')) ||
777 (ch == '-'))
778 #else
779 while ( isalnum(ch) || (ch == '-'))
780 #endif
781 {
782 ch = *(++l);
783 buflen++;
784 }
785
786 if (buflen == 0)
787 {
788 /*
789 * We hit something we cannot deal with,
790 * it is no command or separator nor
791 * alphanumeric, so we call this an error.
792 */
793 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
794 SSL_R_INVALID_COMMAND);
795 retval = found = 0;
796 l++;
797 break;
798 }
799
800 if (rule == CIPHER_SPECIAL)
801 {
802 found = 0; /* unused -- avoid compiler warning */
803 break; /* special treatment */
804 }
805
806 /* check for multi-part specification */
807 if (ch == '+')
808 {
809 multi=1;
810 l++;
811 }
812 else
813 multi=0;
814
815 /*
816 * Now search for the cipher alias in the ca_list. Be careful
817 * with the strncmp, because the "buflen" limitation
818 * will make the rule "ADH:SOME" and the cipher
819 * "ADH-MY-CIPHER" look like a match for buflen=3.
820 * So additionally check whether the cipher name found
821 * has the correct length. We can save a strlen() call:
822 * just checking for the '\0' at the right place is
823 * sufficient, we have to strncmp() anyway. (We cannot
824 * use strcmp(), because buf is not '\0' terminated.)
825 */
826 j = found = 0;
827 cipher_id = 0;
828 ssl_version = 0;
829 while (ca_list[j])
830 {
831 if (!strncmp(buf, ca_list[j]->name, buflen) &&
832 (ca_list[j]->name[buflen] == '\0'))
833 {
834 found = 1;
835 break;
836 }
837 else
838 j++;
839 }
840 if (!found)
841 break; /* ignore this entry */
842
843 /* New algorithms:
844 * 1 - any old restrictions apply outside new mask
845 * 2 - any new restrictions apply outside old mask
846 * 3 - enforce old & new where masks intersect
847 */
848 algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */
849 (ca_list[j]->algorithms & ~mask) | /* 2 */
850 (algorithms & ca_list[j]->algorithms); /* 3 */
851 mask |= ca_list[j]->mask;
852 algo_strength = (algo_strength & ~ca_list[j]->mask_strength) |
853 (ca_list[j]->algo_strength & ~mask_strength) |
854 (algo_strength & ca_list[j]->algo_strength);
855 mask_strength |= ca_list[j]->mask_strength;
856
857 /* explicit ciphersuite found */
858 if (ca_list[j]->valid)
859 {
860 cipher_id = ca_list[j]->id;
861 ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK;
862 break;
863 }
864
865 if (!multi) break;
866 }
867
868 /*
869 * Ok, we have the rule, now apply it
870 */
871 if (rule == CIPHER_SPECIAL)
872 { /* special command */
873 ok = 0;
874 if ((buflen == 8) &&
875 !strncmp(buf, "STRENGTH", 8))
876 ok = ssl_cipher_strength_sort(co_list,
877 head_p, tail_p);
878 else
879 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR,
880 SSL_R_INVALID_COMMAND);
881 if (ok == 0)
882 retval = 0;
883 /*
884 * We do not support any "multi" options
885 * together with "@", so throw away the
886 * rest of the command, if any left, until
887 * end or ':' is found.
888 */
889 while ((*l != '\0') && !ITEM_SEP(*l))
890 l++;
891 }
892 else if (found)
893 {
894 ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask,
895 algo_strength, mask_strength, rule, -1,
896 co_list, head_p, tail_p);
897 }
898 else
899 {
900 while ((*l != '\0') && !ITEM_SEP(*l))
901 l++;
902 }
903 if (*l == '\0') break; /* done */
904 }
905
906 return(retval);
907 }
908
STACK_OF(SSL_CIPHER)909 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
910 STACK_OF(SSL_CIPHER) **cipher_list,
911 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
912 const char *rule_str)
913 {
914 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
915 unsigned long disabled_mask;
916 unsigned long disabled_m256;
917 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list;
918 const char *rule_p;
919 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr;
920 SSL_CIPHER **ca_list = NULL;
921
922 /*
923 * Return with error if nothing to do.
924 */
925 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL)
926 return NULL;
927
928 if (init_ciphers)
929 {
930 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
931 if (init_ciphers) load_ciphers();
932 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
933 }
934
935 /*
936 * To reduce the work to do we only want to process the compiled
937 * in algorithms, so we first get the mask of disabled ciphers.
938 */
939 {
940 struct disabled_masks d;
941 d = ssl_cipher_get_disabled();
942 disabled_mask = d.mask;
943 disabled_m256 = d.m256;
944 }
945
946 /*
947 * Now we have to collect the available ciphers from the compiled
948 * in ciphers. We cannot get more than the number compiled in, so
949 * it is used for allocation.
950 */
951 num_of_ciphers = ssl_method->num_ciphers();
952 #ifdef KSSL_DEBUG
953 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
954 #endif /* KSSL_DEBUG */
955 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
956 if (co_list == NULL)
957 {
958 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
959 return(NULL); /* Failure */
960 }
961
962 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask,
963 disabled_m256, co_list, &head, &tail);
964
965 /*
966 * We also need cipher aliases for selecting based on the rule_str.
967 * There might be two types of entries in the rule_str: 1) names
968 * of ciphers themselves 2) aliases for groups of ciphers.
969 * For 1) we need the available ciphers and for 2) the cipher
970 * groups of cipher_aliases added together in one list (otherwise
971 * we would be happy with just the cipher_aliases table).
972 */
973 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER);
974 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
975 ca_list =
976 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
977 if (ca_list == NULL)
978 {
979 OPENSSL_free(co_list);
980 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
981 return(NULL); /* Failure */
982 }
983 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases,
984 (disabled_mask & disabled_m256), head);
985
986 /*
987 * If the rule_string begins with DEFAULT, apply the default rule
988 * before using the (possibly available) additional rules.
989 */
990 ok = 1;
991 rule_p = rule_str;
992 if (strncmp(rule_str,"DEFAULT",7) == 0)
993 {
994 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST,
995 co_list, &head, &tail, ca_list);
996 rule_p += 7;
997 if (*rule_p == ':')
998 rule_p++;
999 }
1000
1001 if (ok && (strlen(rule_p) > 0))
1002 ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail,
1003 ca_list);
1004
1005 OPENSSL_free(ca_list); /* Not needed anymore */
1006
1007 if (!ok)
1008 { /* Rule processing failure */
1009 OPENSSL_free(co_list);
1010 return(NULL);
1011 }
1012 /*
1013 * Allocate new "cipherstack" for the result, return with error
1014 * if we cannot get one.
1015 */
1016 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL)
1017 {
1018 OPENSSL_free(co_list);
1019 return(NULL);
1020 }
1021
1022 /*
1023 * The cipher selection for the list is done. The ciphers are added
1024 * to the resulting precedence to the STACK_OF(SSL_CIPHER).
1025 */
1026 for (curr = head; curr != NULL; curr = curr->next)
1027 {
1028 #ifdef OPENSSL_FIPS
1029 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS))
1030 #else
1031 if (curr->active)
1032 #endif
1033 {
1034 sk_SSL_CIPHER_push(cipherstack, curr->cipher);
1035 #ifdef CIPHER_DEBUG
1036 printf("<%s>\n",curr->cipher->name);
1037 #endif
1038 }
1039 }
1040 OPENSSL_free(co_list); /* Not needed any longer */
1041
1042 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack);
1043 if (tmp_cipher_list == NULL)
1044 {
1045 sk_SSL_CIPHER_free(cipherstack);
1046 return NULL;
1047 }
1048 if (*cipher_list != NULL)
1049 sk_SSL_CIPHER_free(*cipher_list);
1050 *cipher_list = cipherstack;
1051 if (*cipher_list_by_id != NULL)
1052 sk_SSL_CIPHER_free(*cipher_list_by_id);
1053 *cipher_list_by_id = tmp_cipher_list;
1054 sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
1055
1056 return(cipherstack);
1057 }
1058
SSL_CIPHER_description(SSL_CIPHER * cipher,char * buf,int len)1059 char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len)
1060 {
1061 int is_export,pkl,kl;
1062 char *ver,*exp_str;
1063 char *kx,*au,*enc,*mac;
1064 unsigned long alg,alg2,alg_s;
1065 #ifdef KSSL_DEBUG
1066 static char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n";
1067 #else
1068 static char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n";
1069 #endif /* KSSL_DEBUG */
1070
1071 alg=cipher->algorithms;
1072 alg_s=cipher->algo_strength;
1073 alg2=cipher->algorithm2;
1074
1075 is_export=SSL_C_IS_EXPORT(cipher);
1076 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1077 kl=SSL_C_EXPORT_KEYLENGTH(cipher);
1078 exp_str=is_export?" export":"";
1079
1080 if (alg & SSL_SSLV2)
1081 ver="SSLv2";
1082 else if (alg & SSL_SSLV3)
1083 ver="SSLv3";
1084 else
1085 ver="unknown";
1086
1087 switch (alg&SSL_MKEY_MASK)
1088 {
1089 case SSL_kRSA:
1090 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA";
1091 break;
1092 case SSL_kDHr:
1093 kx="DH/RSA";
1094 break;
1095 case SSL_kDHd:
1096 kx="DH/DSS";
1097 break;
1098 case SSL_kKRB5: /* VRS */
1099 case SSL_KRB5: /* VRS */
1100 kx="KRB5";
1101 break;
1102 case SSL_kFZA:
1103 kx="Fortezza";
1104 break;
1105 case SSL_kEDH:
1106 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH";
1107 break;
1108 default:
1109 kx="unknown";
1110 }
1111
1112 switch (alg&SSL_AUTH_MASK)
1113 {
1114 case SSL_aRSA:
1115 au="RSA";
1116 break;
1117 case SSL_aDSS:
1118 au="DSS";
1119 break;
1120 case SSL_aDH:
1121 au="DH";
1122 break;
1123 case SSL_aKRB5: /* VRS */
1124 case SSL_KRB5: /* VRS */
1125 au="KRB5";
1126 break;
1127 case SSL_aFZA:
1128 case SSL_aNULL:
1129 au="None";
1130 break;
1131 default:
1132 au="unknown";
1133 break;
1134 }
1135
1136 switch (alg&SSL_ENC_MASK)
1137 {
1138 case SSL_DES:
1139 enc=(is_export && kl == 5)?"DES(40)":"DES(56)";
1140 break;
1141 case SSL_3DES:
1142 enc="3DES(168)";
1143 break;
1144 case SSL_RC4:
1145 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)")
1146 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)");
1147 break;
1148 case SSL_RC2:
1149 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)";
1150 break;
1151 case SSL_IDEA:
1152 enc="IDEA(128)";
1153 break;
1154 case SSL_eFZA:
1155 enc="Fortezza";
1156 break;
1157 case SSL_eNULL:
1158 enc="None";
1159 break;
1160 case SSL_AES:
1161 switch(cipher->strength_bits)
1162 {
1163 case 128: enc="AES(128)"; break;
1164 case 192: enc="AES(192)"; break;
1165 case 256: enc="AES(256)"; break;
1166 default: enc="AES(?""?""?)"; break;
1167 }
1168 break;
1169 default:
1170 enc="unknown";
1171 break;
1172 }
1173
1174 switch (alg&SSL_MAC_MASK)
1175 {
1176 case SSL_MD5:
1177 mac="MD5";
1178 break;
1179 case SSL_SHA1:
1180 mac="SHA1";
1181 break;
1182 default:
1183 mac="unknown";
1184 break;
1185 }
1186
1187 if (buf == NULL)
1188 {
1189 len=128;
1190 buf=OPENSSL_malloc(len);
1191 if (buf == NULL) return("OPENSSL_malloc Error");
1192 }
1193 else if (len < 128)
1194 return("Buffer too small");
1195
1196 #ifdef KSSL_DEBUG
1197 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg);
1198 #else
1199 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str);
1200 #endif /* KSSL_DEBUG */
1201 return(buf);
1202 }
1203
SSL_CIPHER_get_version(const SSL_CIPHER * c)1204 char *SSL_CIPHER_get_version(const SSL_CIPHER *c)
1205 {
1206 int i;
1207
1208 if (c == NULL) return("(NONE)");
1209 i=(int)(c->id>>24L);
1210 if (i == 3)
1211 return("TLSv1/SSLv3");
1212 else if (i == 2)
1213 return("SSLv2");
1214 else
1215 return("unknown");
1216 }
1217
1218 /* return the actual cipher being used */
SSL_CIPHER_get_name(const SSL_CIPHER * c)1219 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c)
1220 {
1221 if (c != NULL)
1222 return(c->name);
1223 return("(NONE)");
1224 }
1225
1226 /* number of bits for symmetric cipher */
SSL_CIPHER_get_bits(const SSL_CIPHER * c,int * alg_bits)1227 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits)
1228 {
1229 int ret=0;
1230
1231 if (c != NULL)
1232 {
1233 if (alg_bits != NULL) *alg_bits = c->alg_bits;
1234 ret = c->strength_bits;
1235 }
1236 return(ret);
1237 }
1238
ssl3_comp_find(STACK_OF (SSL_COMP)* sk,int n)1239 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
1240 {
1241 SSL_COMP *ctmp;
1242 int i,nn;
1243
1244 if ((n == 0) || (sk == NULL)) return(NULL);
1245 nn=sk_SSL_COMP_num(sk);
1246 for (i=0; i<nn; i++)
1247 {
1248 ctmp=sk_SSL_COMP_value(sk,i);
1249 if (ctmp->id == n)
1250 return(ctmp);
1251 }
1252 return(NULL);
1253 }
1254
sk_comp_cmp(const SSL_COMP * const * a,const SSL_COMP * const * b)1255 static int sk_comp_cmp(const SSL_COMP * const *a,
1256 const SSL_COMP * const *b)
1257 {
1258 return((*a)->id-(*b)->id);
1259 }
1260
STACK_OF(SSL_COMP)1261 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
1262 {
1263 return(ssl_comp_methods);
1264 }
1265
SSL_COMP_add_compression_method(int id,COMP_METHOD * cm)1266 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm)
1267 {
1268 SSL_COMP *comp;
1269 STACK_OF(SSL_COMP) *sk;
1270
1271 if (cm == NULL || cm->type == NID_undef)
1272 return 1;
1273
1274 MemCheck_off();
1275 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
1276 comp->id=id;
1277 comp->method=cm;
1278 if (ssl_comp_methods == NULL)
1279 sk=ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp);
1280 else
1281 sk=ssl_comp_methods;
1282 if ((sk == NULL) || !sk_SSL_COMP_push(sk,comp))
1283 {
1284 MemCheck_on();
1285 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE);
1286 return(1);
1287 }
1288 else
1289 {
1290 MemCheck_on();
1291 return(0);
1292 }
1293 }
1294