ssl_ciph.c revision bdfb8ad83da0647e9b9a32792598e8ce7ba3ef4d
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#include <openssl/comp.h> 119#include "ssl_locl.h" 120 121#define SSL_ENC_DES_IDX 0 122#define SSL_ENC_3DES_IDX 1 123#define SSL_ENC_RC4_IDX 2 124#define SSL_ENC_RC2_IDX 3 125#define SSL_ENC_IDEA_IDX 4 126#define SSL_ENC_eFZA_IDX 5 127#define SSL_ENC_NULL_IDX 6 128#define SSL_ENC_AES128_IDX 7 129#define SSL_ENC_AES256_IDX 8 130#define SSL_ENC_CAMELLIA128_IDX 9 131#define SSL_ENC_CAMELLIA256_IDX 10 132#define SSL_ENC_SEED_IDX 11 133#define SSL_ENC_NUM_IDX 12 134 135 136static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={ 137 NULL,NULL,NULL,NULL,NULL,NULL, 138 }; 139 140#define SSL_COMP_NULL_IDX 0 141#define SSL_COMP_ZLIB_IDX 1 142#define SSL_COMP_NUM_IDX 2 143 144static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL; 145 146#define SSL_MD_MD5_IDX 0 147#define SSL_MD_SHA1_IDX 1 148#define SSL_MD_NUM_IDX 2 149static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ 150 NULL,NULL, 151 }; 152 153#define CIPHER_ADD 1 154#define CIPHER_KILL 2 155#define CIPHER_DEL 3 156#define CIPHER_ORD 4 157#define CIPHER_SPECIAL 5 158 159typedef struct cipher_order_st 160 { 161 SSL_CIPHER *cipher; 162 int active; 163 int dead; 164 struct cipher_order_st *next,*prev; 165 } CIPHER_ORDER; 166 167static const SSL_CIPHER cipher_aliases[]={ 168 /* Don't include eNULL unless specifically enabled. */ 169 /* Don't include ECC in ALL because these ciphers are not yet official. */ 170 {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 */ 171 /* TODO: COMPLEMENT OF ALL and COMPLEMENT OF DEFAULT do not have ECC cipher suites handled properly. */ 172 {0,SSL_TXT_CMPALL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, /* COMPLEMENT OF ALL */ 173 {0,SSL_TXT_CMPDEF,0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK,0}, 174 {0,SSL_TXT_kKRB5,0,SSL_kKRB5,0,0,0,0,SSL_MKEY_MASK,0}, /* VRS Kerberos5 */ 175 {0,SSL_TXT_kRSA,0,SSL_kRSA, 0,0,0,0,SSL_MKEY_MASK,0}, 176 {0,SSL_TXT_kDHr,0,SSL_kDHr, 0,0,0,0,SSL_MKEY_MASK,0}, 177 {0,SSL_TXT_kDHd,0,SSL_kDHd, 0,0,0,0,SSL_MKEY_MASK,0}, 178 {0,SSL_TXT_kEDH,0,SSL_kEDH, 0,0,0,0,SSL_MKEY_MASK,0}, 179 {0,SSL_TXT_kFZA,0,SSL_kFZA, 0,0,0,0,SSL_MKEY_MASK,0}, 180 {0,SSL_TXT_DH, 0,SSL_DH, 0,0,0,0,SSL_MKEY_MASK,0}, 181 {0,SSL_TXT_ECC, 0,(SSL_kECDH|SSL_kECDHE), 0,0,0,0,SSL_MKEY_MASK,0}, 182 {0,SSL_TXT_EDH, 0,SSL_EDH, 0,0,0,0,SSL_MKEY_MASK|SSL_AUTH_MASK,0}, 183 {0,SSL_TXT_aKRB5,0,SSL_aKRB5,0,0,0,0,SSL_AUTH_MASK,0}, /* VRS Kerberos5 */ 184 {0,SSL_TXT_aRSA,0,SSL_aRSA, 0,0,0,0,SSL_AUTH_MASK,0}, 185 {0,SSL_TXT_aDSS,0,SSL_aDSS, 0,0,0,0,SSL_AUTH_MASK,0}, 186 {0,SSL_TXT_aFZA,0,SSL_aFZA, 0,0,0,0,SSL_AUTH_MASK,0}, 187 {0,SSL_TXT_aNULL,0,SSL_aNULL,0,0,0,0,SSL_AUTH_MASK,0}, 188 {0,SSL_TXT_aDH, 0,SSL_aDH, 0,0,0,0,SSL_AUTH_MASK,0}, 189 {0,SSL_TXT_DSS, 0,SSL_DSS, 0,0,0,0,SSL_AUTH_MASK,0}, 190 191 {0,SSL_TXT_DES, 0,SSL_DES, 0,0,0,0,SSL_ENC_MASK,0}, 192 {0,SSL_TXT_3DES,0,SSL_3DES, 0,0,0,0,SSL_ENC_MASK,0}, 193 {0,SSL_TXT_RC4, 0,SSL_RC4, 0,0,0,0,SSL_ENC_MASK,0}, 194 {0,SSL_TXT_RC2, 0,SSL_RC2, 0,0,0,0,SSL_ENC_MASK,0}, 195#ifndef OPENSSL_NO_IDEA 196 {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0}, 197#endif 198 {0,SSL_TXT_SEED,0,SSL_SEED, 0,0,0,0,SSL_ENC_MASK,0}, 199 {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, 200 {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,0,0,0,SSL_ENC_MASK,0}, 201 {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0}, 202 {0,SSL_TXT_CAMELLIA,0,SSL_CAMELLIA, 0,0,0,0,SSL_ENC_MASK,0}, 203 204 {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0}, 205 {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0}, 206 {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0}, 207 208 {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0}, 209 {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 210 {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 211 {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 212 {0,SSL_TXT_FZA, 0,SSL_FZA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK,0}, 213 214 {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0}, 215 {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0}, 216 {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0}, 217 218 {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, 219 {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, 220 {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK}, 221 {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK}, 222 {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK}, 223 {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK}, 224 {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK}, 225 }; 226 227void ssl_load_ciphers(void) 228 { 229 ssl_cipher_methods[SSL_ENC_DES_IDX]= 230 EVP_get_cipherbyname(SN_des_cbc); 231 ssl_cipher_methods[SSL_ENC_3DES_IDX]= 232 EVP_get_cipherbyname(SN_des_ede3_cbc); 233 ssl_cipher_methods[SSL_ENC_RC4_IDX]= 234 EVP_get_cipherbyname(SN_rc4); 235 ssl_cipher_methods[SSL_ENC_RC2_IDX]= 236 EVP_get_cipherbyname(SN_rc2_cbc); 237#ifndef OPENSSL_NO_IDEA 238 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= 239 EVP_get_cipherbyname(SN_idea_cbc); 240#else 241 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL; 242#endif 243 ssl_cipher_methods[SSL_ENC_AES128_IDX]= 244 EVP_get_cipherbyname(SN_aes_128_cbc); 245 ssl_cipher_methods[SSL_ENC_AES256_IDX]= 246 EVP_get_cipherbyname(SN_aes_256_cbc); 247 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= 248 EVP_get_cipherbyname(SN_camellia_128_cbc); 249 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= 250 EVP_get_cipherbyname(SN_camellia_256_cbc); 251 ssl_cipher_methods[SSL_ENC_SEED_IDX]= 252 EVP_get_cipherbyname(SN_seed_cbc); 253 254 ssl_digest_methods[SSL_MD_MD5_IDX]= 255 EVP_get_digestbyname(SN_md5); 256 ssl_digest_methods[SSL_MD_SHA1_IDX]= 257 EVP_get_digestbyname(SN_sha1); 258 } 259 260 261#ifndef OPENSSL_NO_COMP 262 263static int sk_comp_cmp(const SSL_COMP * const *a, 264 const SSL_COMP * const *b) 265 { 266 return((*a)->id-(*b)->id); 267 } 268 269static void load_builtin_compressions(void) 270 { 271 int got_write_lock = 0; 272 273 CRYPTO_r_lock(CRYPTO_LOCK_SSL); 274 if (ssl_comp_methods == NULL) 275 { 276 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 277 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 278 got_write_lock = 1; 279 280 if (ssl_comp_methods == NULL) 281 { 282 SSL_COMP *comp = NULL; 283 284 MemCheck_off(); 285 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); 286 if (ssl_comp_methods != NULL) 287 { 288 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 289 if (comp != NULL) 290 { 291 comp->method=COMP_zlib(); 292 if (comp->method 293 && comp->method->type == NID_undef) 294 OPENSSL_free(comp); 295 else 296 { 297 comp->id=SSL_COMP_ZLIB_IDX; 298 comp->name=comp->method->name; 299 sk_SSL_COMP_push(ssl_comp_methods,comp); 300 } 301 } 302 } 303 MemCheck_on(); 304 } 305 } 306 307 if (got_write_lock) 308 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 309 else 310 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 311 } 312#endif 313 314int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 315 const EVP_MD **md, SSL_COMP **comp) 316 { 317 int i; 318 SSL_CIPHER *c; 319 320 c=s->cipher; 321 if (c == NULL) return(0); 322 if (comp != NULL) 323 { 324 SSL_COMP ctmp; 325#ifndef OPENSSL_NO_COMP 326 load_builtin_compressions(); 327#endif 328 329 *comp=NULL; 330 ctmp.id=s->compress_meth; 331 if (ssl_comp_methods != NULL) 332 { 333 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); 334 if (i >= 0) 335 *comp=sk_SSL_COMP_value(ssl_comp_methods,i); 336 else 337 *comp=NULL; 338 } 339 } 340 341 if ((enc == NULL) || (md == NULL)) return(0); 342 343 switch (c->algorithms & SSL_ENC_MASK) 344 { 345 case SSL_DES: 346 i=SSL_ENC_DES_IDX; 347 break; 348 case SSL_3DES: 349 i=SSL_ENC_3DES_IDX; 350 break; 351 case SSL_RC4: 352 i=SSL_ENC_RC4_IDX; 353 break; 354 case SSL_RC2: 355 i=SSL_ENC_RC2_IDX; 356 break; 357 case SSL_IDEA: 358 i=SSL_ENC_IDEA_IDX; 359 break; 360 case SSL_eNULL: 361 i=SSL_ENC_NULL_IDX; 362 break; 363 case SSL_AES: 364 switch(c->alg_bits) 365 { 366 case 128: i=SSL_ENC_AES128_IDX; break; 367 case 256: i=SSL_ENC_AES256_IDX; break; 368 default: i=-1; break; 369 } 370 break; 371 case SSL_CAMELLIA: 372 switch(c->alg_bits) 373 { 374 case 128: i=SSL_ENC_CAMELLIA128_IDX; break; 375 case 256: i=SSL_ENC_CAMELLIA256_IDX; break; 376 default: i=-1; break; 377 } 378 break; 379 case SSL_SEED: 380 i=SSL_ENC_SEED_IDX; 381 break; 382 383 default: 384 i= -1; 385 break; 386 } 387 388 if ((i < 0) || (i > SSL_ENC_NUM_IDX)) 389 *enc=NULL; 390 else 391 { 392 if (i == SSL_ENC_NULL_IDX) 393 *enc=EVP_enc_null(); 394 else 395 *enc=ssl_cipher_methods[i]; 396 } 397 398 switch (c->algorithms & SSL_MAC_MASK) 399 { 400 case SSL_MD5: 401 i=SSL_MD_MD5_IDX; 402 break; 403 case SSL_SHA1: 404 i=SSL_MD_SHA1_IDX; 405 break; 406 default: 407 i= -1; 408 break; 409 } 410 if ((i < 0) || (i > SSL_MD_NUM_IDX)) 411 *md=NULL; 412 else 413 *md=ssl_digest_methods[i]; 414 415 if ((*enc != NULL) && (*md != NULL)) 416 return(1); 417 else 418 return(0); 419 } 420 421#define ITEM_SEP(a) \ 422 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) 423 424static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, 425 CIPHER_ORDER **tail) 426 { 427 if (curr == *tail) return; 428 if (curr == *head) 429 *head=curr->next; 430 if (curr->prev != NULL) 431 curr->prev->next=curr->next; 432 if (curr->next != NULL) /* should always be true */ 433 curr->next->prev=curr->prev; 434 (*tail)->next=curr; 435 curr->prev= *tail; 436 curr->next=NULL; 437 *tail=curr; 438 } 439 440struct disabled_masks { /* This is a kludge no longer needed with OpenSSL 0.9.9, 441 * where 128-bit and 256-bit algorithms simply will get 442 * separate bits. */ 443 unsigned long mask; /* everything except m256 */ 444 unsigned long m256; /* applies to 256-bit algorithms only */ 445}; 446 447static struct disabled_masks ssl_cipher_get_disabled(void) 448 { 449 unsigned long mask; 450 unsigned long m256; 451 struct disabled_masks ret; 452 453 mask = SSL_kFZA; 454#ifdef OPENSSL_NO_RSA 455 mask |= SSL_aRSA|SSL_kRSA; 456#endif 457#ifdef OPENSSL_NO_DSA 458 mask |= SSL_aDSS; 459#endif 460#ifdef OPENSSL_NO_DH 461 mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH; 462#endif 463#ifdef OPENSSL_NO_KRB5 464 mask |= SSL_kKRB5|SSL_aKRB5; 465#endif 466#ifdef OPENSSL_NO_ECDH 467 mask |= SSL_kECDH|SSL_kECDHE; 468#endif 469#ifdef SSL_FORBID_ENULL 470 mask |= SSL_eNULL; 471#endif 472 473 mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; 474 mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; 475 mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; 476 mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; 477 mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; 478 mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0; 479 mask |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; 480 481 mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; 482 mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; 483 484 /* finally consider algorithms where mask and m256 differ */ 485 m256 = mask; 486 mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0; 487 mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0; 488 m256 |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES:0; 489 m256 |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA:0; 490 491 ret.mask = mask; 492 ret.m256 = m256; 493 return ret; 494 } 495 496static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, 497 int num_of_ciphers, unsigned long mask, unsigned long m256, 498 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, 499 CIPHER_ORDER **tail_p) 500 { 501 int i, co_list_num; 502 SSL_CIPHER *c; 503 504 /* 505 * We have num_of_ciphers descriptions compiled in, depending on the 506 * method selected (SSLv2 and/or SSLv3, TLSv1 etc). 507 * These will later be sorted in a linked list with at most num 508 * entries. 509 */ 510 511 /* Get the initial list of ciphers */ 512 co_list_num = 0; /* actual count of ciphers */ 513 for (i = 0; i < num_of_ciphers; i++) 514 { 515 c = ssl_method->get_cipher(i); 516#define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask)) 517 /* drop those that use any of that is not available */ 518 if ((c != NULL) && c->valid && !IS_MASKED(c)) 519 { 520 co_list[co_list_num].cipher = c; 521 co_list[co_list_num].next = NULL; 522 co_list[co_list_num].prev = NULL; 523 co_list[co_list_num].active = 0; 524 co_list_num++; 525#ifdef KSSL_DEBUG 526 printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms); 527#endif /* KSSL_DEBUG */ 528 /* 529 if (!sk_push(ca_list,(char *)c)) goto err; 530 */ 531 } 532 } 533 534 /* 535 * Prepare linked list from list entries 536 */ 537 for (i = 1; i < co_list_num - 1; i++) 538 { 539 co_list[i].prev = &(co_list[i-1]); 540 co_list[i].next = &(co_list[i+1]); 541 } 542 if (co_list_num > 0) 543 { 544 (*head_p) = &(co_list[0]); 545 (*head_p)->prev = NULL; 546 (*head_p)->next = &(co_list[1]); 547 (*tail_p) = &(co_list[co_list_num - 1]); 548 (*tail_p)->prev = &(co_list[co_list_num - 2]); 549 (*tail_p)->next = NULL; 550 } 551 } 552 553static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list, 554 int num_of_group_aliases, unsigned long mask, 555 CIPHER_ORDER *head) 556 { 557 CIPHER_ORDER *ciph_curr; 558 SSL_CIPHER **ca_curr; 559 int i; 560 561 /* 562 * First, add the real ciphers as already collected 563 */ 564 ciph_curr = head; 565 ca_curr = ca_list; 566 while (ciph_curr != NULL) 567 { 568 *ca_curr = ciph_curr->cipher; 569 ca_curr++; 570 ciph_curr = ciph_curr->next; 571 } 572 573 /* 574 * Now we add the available ones from the cipher_aliases[] table. 575 * They represent either an algorithm, that must be fully 576 * supported (not match any bit in mask) or represent a cipher 577 * strength value (will be added in any case because algorithms=0). 578 */ 579 for (i = 0; i < num_of_group_aliases; i++) 580 { 581 if ((i == 0) || /* always fetch "ALL" */ 582 !(cipher_aliases[i].algorithms & mask)) 583 { 584 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); 585 ca_curr++; 586 } 587 } 588 589 *ca_curr = NULL; /* end of list */ 590 } 591 592static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_version, 593 unsigned long algorithms, unsigned long mask, 594 unsigned long algo_strength, unsigned long mask_strength, 595 int rule, int strength_bits, CIPHER_ORDER *co_list, 596 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 597 { 598 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2; 599 SSL_CIPHER *cp; 600 unsigned long ma, ma_s; 601 602#ifdef CIPHER_DEBUG 603 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n", 604 rule, algorithms, mask, algo_strength, mask_strength, 605 strength_bits); 606#endif 607 608 curr = head = *head_p; 609 curr2 = head; 610 tail2 = tail = *tail_p; 611 for (;;) 612 { 613 if ((curr == NULL) || (curr == tail2)) break; 614 curr = curr2; 615 curr2 = curr->next; 616 617 cp = curr->cipher; 618 619 /* If explicit cipher suite, match only that one for its own protocol version. 620 * Usual selection criteria will be used for similar ciphersuites from other version! */ 621 622 if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version) 623 { 624 if (cp->id != cipher_id) 625 continue; 626 } 627 628 /* 629 * Selection criteria is either the number of strength_bits 630 * or the algorithm used. 631 */ 632 else if (strength_bits == -1) 633 { 634 ma = mask & cp->algorithms; 635 ma_s = mask_strength & cp->algo_strength; 636 637#ifdef CIPHER_DEBUG 638 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength); 639 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength); 640#endif 641 /* 642 * Select: if none of the mask bit was met from the 643 * cipher or not all of the bits were met, the 644 * selection does not apply. 645 */ 646 if (((ma == 0) && (ma_s == 0)) || 647 ((ma & algorithms) != ma) || 648 ((ma_s & algo_strength) != ma_s)) 649 continue; /* does not apply */ 650 } 651 else if (strength_bits != cp->strength_bits) 652 continue; /* does not apply */ 653 654#ifdef CIPHER_DEBUG 655 printf("Action = %d\n", rule); 656#endif 657 658 /* add the cipher if it has not been added yet. */ 659 if (rule == CIPHER_ADD) 660 { 661 if (!curr->active) 662 { 663 int add_this_cipher = 1; 664 665 if (((cp->algorithms & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0)) 666 { 667 /* Make sure "ECCdraft" ciphersuites are activated only if 668 * *explicitly* requested, but not implicitly (such as 669 * as part of the "AES" alias). */ 670 671 add_this_cipher = (mask & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0 || cipher_id != 0; 672 } 673 674 if (add_this_cipher) 675 { 676 ll_append_tail(&head, curr, &tail); 677 curr->active = 1; 678 } 679 } 680 } 681 /* Move the added cipher to this location */ 682 else if (rule == CIPHER_ORD) 683 { 684 if (curr->active) 685 { 686 ll_append_tail(&head, curr, &tail); 687 } 688 } 689 else if (rule == CIPHER_DEL) 690 curr->active = 0; 691 else if (rule == CIPHER_KILL) 692 { 693 if (head == curr) 694 head = curr->next; 695 else 696 curr->prev->next = curr->next; 697 if (tail == curr) 698 tail = curr->prev; 699 curr->active = 0; 700 if (curr->next != NULL) 701 curr->next->prev = curr->prev; 702 if (curr->prev != NULL) 703 curr->prev->next = curr->next; 704 curr->next = NULL; 705 curr->prev = NULL; 706 } 707 } 708 709 *head_p = head; 710 *tail_p = tail; 711 } 712 713static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list, 714 CIPHER_ORDER **head_p, 715 CIPHER_ORDER **tail_p) 716 { 717 int max_strength_bits, i, *number_uses; 718 CIPHER_ORDER *curr; 719 720 /* 721 * This routine sorts the ciphers with descending strength. The sorting 722 * must keep the pre-sorted sequence, so we apply the normal sorting 723 * routine as '+' movement to the end of the list. 724 */ 725 max_strength_bits = 0; 726 curr = *head_p; 727 while (curr != NULL) 728 { 729 if (curr->active && 730 (curr->cipher->strength_bits > max_strength_bits)) 731 max_strength_bits = curr->cipher->strength_bits; 732 curr = curr->next; 733 } 734 735 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 736 if (!number_uses) 737 { 738 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); 739 return(0); 740 } 741 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 742 743 /* 744 * Now find the strength_bits values actually used 745 */ 746 curr = *head_p; 747 while (curr != NULL) 748 { 749 if (curr->active) 750 number_uses[curr->cipher->strength_bits]++; 751 curr = curr->next; 752 } 753 /* 754 * Go through the list of used strength_bits values in descending 755 * order. 756 */ 757 for (i = max_strength_bits; i >= 0; i--) 758 if (number_uses[i] > 0) 759 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i, 760 co_list, head_p, tail_p); 761 762 OPENSSL_free(number_uses); 763 return(1); 764 } 765 766static int ssl_cipher_process_rulestr(const char *rule_str, 767 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, 768 CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list) 769 { 770 unsigned long algorithms, mask, algo_strength, mask_strength; 771 const char *l, *start, *buf; 772 int j, multi, found, rule, retval, ok, buflen; 773 unsigned long cipher_id = 0, ssl_version = 0; 774 char ch; 775 776 retval = 1; 777 l = rule_str; 778 for (;;) 779 { 780 ch = *l; 781 782 if (ch == '\0') 783 break; /* done */ 784 if (ch == '-') 785 { rule = CIPHER_DEL; l++; } 786 else if (ch == '+') 787 { rule = CIPHER_ORD; l++; } 788 else if (ch == '!') 789 { rule = CIPHER_KILL; l++; } 790 else if (ch == '@') 791 { rule = CIPHER_SPECIAL; l++; } 792 else 793 { rule = CIPHER_ADD; } 794 795 if (ITEM_SEP(ch)) 796 { 797 l++; 798 continue; 799 } 800 801 algorithms = mask = algo_strength = mask_strength = 0; 802 803 start=l; 804 for (;;) 805 { 806 ch = *l; 807 buf = l; 808 buflen = 0; 809#ifndef CHARSET_EBCDIC 810 while ( ((ch >= 'A') && (ch <= 'Z')) || 811 ((ch >= '0') && (ch <= '9')) || 812 ((ch >= 'a') && (ch <= 'z')) || 813 (ch == '-')) 814#else 815 while ( isalnum(ch) || (ch == '-')) 816#endif 817 { 818 ch = *(++l); 819 buflen++; 820 } 821 822 if (buflen == 0) 823 { 824 /* 825 * We hit something we cannot deal with, 826 * it is no command or separator nor 827 * alphanumeric, so we call this an error. 828 */ 829 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 830 SSL_R_INVALID_COMMAND); 831 retval = found = 0; 832 l++; 833 break; 834 } 835 836 if (rule == CIPHER_SPECIAL) 837 { 838 found = 0; /* unused -- avoid compiler warning */ 839 break; /* special treatment */ 840 } 841 842 /* check for multi-part specification */ 843 if (ch == '+') 844 { 845 multi=1; 846 l++; 847 } 848 else 849 multi=0; 850 851 /* 852 * Now search for the cipher alias in the ca_list. Be careful 853 * with the strncmp, because the "buflen" limitation 854 * will make the rule "ADH:SOME" and the cipher 855 * "ADH-MY-CIPHER" look like a match for buflen=3. 856 * So additionally check whether the cipher name found 857 * has the correct length. We can save a strlen() call: 858 * just checking for the '\0' at the right place is 859 * sufficient, we have to strncmp() anyway. (We cannot 860 * use strcmp(), because buf is not '\0' terminated.) 861 */ 862 j = found = 0; 863 cipher_id = 0; 864 ssl_version = 0; 865 while (ca_list[j]) 866 { 867 if (!strncmp(buf, ca_list[j]->name, buflen) && 868 (ca_list[j]->name[buflen] == '\0')) 869 { 870 found = 1; 871 break; 872 } 873 else 874 j++; 875 } 876 if (!found) 877 break; /* ignore this entry */ 878 879 /* New algorithms: 880 * 1 - any old restrictions apply outside new mask 881 * 2 - any new restrictions apply outside old mask 882 * 3 - enforce old & new where masks intersect 883 */ 884 algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */ 885 (ca_list[j]->algorithms & ~mask) | /* 2 */ 886 (algorithms & ca_list[j]->algorithms); /* 3 */ 887 mask |= ca_list[j]->mask; 888 algo_strength = (algo_strength & ~ca_list[j]->mask_strength) | 889 (ca_list[j]->algo_strength & ~mask_strength) | 890 (algo_strength & ca_list[j]->algo_strength); 891 mask_strength |= ca_list[j]->mask_strength; 892 893 /* explicit ciphersuite found */ 894 if (ca_list[j]->valid) 895 { 896 cipher_id = ca_list[j]->id; 897 ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK; 898 break; 899 } 900 901 if (!multi) break; 902 } 903 904 /* 905 * Ok, we have the rule, now apply it 906 */ 907 if (rule == CIPHER_SPECIAL) 908 { /* special command */ 909 ok = 0; 910 if ((buflen == 8) && 911 !strncmp(buf, "STRENGTH", 8)) 912 ok = ssl_cipher_strength_sort(co_list, 913 head_p, tail_p); 914 else 915 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 916 SSL_R_INVALID_COMMAND); 917 if (ok == 0) 918 retval = 0; 919 /* 920 * We do not support any "multi" options 921 * together with "@", so throw away the 922 * rest of the command, if any left, until 923 * end or ':' is found. 924 */ 925 while ((*l != '\0') && !ITEM_SEP(*l)) 926 l++; 927 } 928 else if (found) 929 { 930 ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask, 931 algo_strength, mask_strength, rule, -1, 932 co_list, head_p, tail_p); 933 } 934 else 935 { 936 while ((*l != '\0') && !ITEM_SEP(*l)) 937 l++; 938 } 939 if (*l == '\0') break; /* done */ 940 } 941 942 return(retval); 943 } 944 945STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, 946 STACK_OF(SSL_CIPHER) **cipher_list, 947 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 948 const char *rule_str) 949 { 950 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 951 unsigned long disabled_mask; 952 unsigned long disabled_m256; 953 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 954 const char *rule_p; 955 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 956 SSL_CIPHER **ca_list = NULL; 957 958 /* 959 * Return with error if nothing to do. 960 */ 961 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 962 return NULL; 963 964 /* 965 * To reduce the work to do we only want to process the compiled 966 * in algorithms, so we first get the mask of disabled ciphers. 967 */ 968 { 969 struct disabled_masks d; 970 d = ssl_cipher_get_disabled(); 971 disabled_mask = d.mask; 972 disabled_m256 = d.m256; 973 } 974 975 /* 976 * Now we have to collect the available ciphers from the compiled 977 * in ciphers. We cannot get more than the number compiled in, so 978 * it is used for allocation. 979 */ 980 num_of_ciphers = ssl_method->num_ciphers(); 981#ifdef KSSL_DEBUG 982 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); 983#endif /* KSSL_DEBUG */ 984 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 985 if (co_list == NULL) 986 { 987 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 988 return(NULL); /* Failure */ 989 } 990 991 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask, 992 disabled_m256, co_list, &head, &tail); 993 994 /* 995 * We also need cipher aliases for selecting based on the rule_str. 996 * There might be two types of entries in the rule_str: 1) names 997 * of ciphers themselves 2) aliases for groups of ciphers. 998 * For 1) we need the available ciphers and for 2) the cipher 999 * groups of cipher_aliases added together in one list (otherwise 1000 * we would be happy with just the cipher_aliases table). 1001 */ 1002 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 1003 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 1004 ca_list = 1005 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); 1006 if (ca_list == NULL) 1007 { 1008 OPENSSL_free(co_list); 1009 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1010 return(NULL); /* Failure */ 1011 } 1012 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, 1013 (disabled_mask & disabled_m256), head); 1014 1015 /* 1016 * If the rule_string begins with DEFAULT, apply the default rule 1017 * before using the (possibly available) additional rules. 1018 */ 1019 ok = 1; 1020 rule_p = rule_str; 1021 if (strncmp(rule_str,"DEFAULT",7) == 0) 1022 { 1023 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 1024 co_list, &head, &tail, ca_list); 1025 rule_p += 7; 1026 if (*rule_p == ':') 1027 rule_p++; 1028 } 1029 1030 if (ok && (strlen(rule_p) > 0)) 1031 ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail, 1032 ca_list); 1033 1034 OPENSSL_free(ca_list); /* Not needed anymore */ 1035 1036 if (!ok) 1037 { /* Rule processing failure */ 1038 OPENSSL_free(co_list); 1039 return(NULL); 1040 } 1041 /* 1042 * Allocate new "cipherstack" for the result, return with error 1043 * if we cannot get one. 1044 */ 1045 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) 1046 { 1047 OPENSSL_free(co_list); 1048 return(NULL); 1049 } 1050 1051 /* 1052 * The cipher selection for the list is done. The ciphers are added 1053 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1054 */ 1055 for (curr = head; curr != NULL; curr = curr->next) 1056 { 1057 if (curr->active) 1058 { 1059 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1060#ifdef CIPHER_DEBUG 1061 printf("<%s>\n",curr->cipher->name); 1062#endif 1063 } 1064 } 1065 OPENSSL_free(co_list); /* Not needed any longer */ 1066 1067 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1068 if (tmp_cipher_list == NULL) 1069 { 1070 sk_SSL_CIPHER_free(cipherstack); 1071 return NULL; 1072 } 1073 if (*cipher_list != NULL) 1074 sk_SSL_CIPHER_free(*cipher_list); 1075 *cipher_list = cipherstack; 1076 if (*cipher_list_by_id != NULL) 1077 sk_SSL_CIPHER_free(*cipher_list_by_id); 1078 *cipher_list_by_id = tmp_cipher_list; 1079 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); 1080 1081 return(cipherstack); 1082 } 1083 1084char *SSL_CIPHER_description(SSL_CIPHER *cipher, char *buf, int len) 1085 { 1086 int is_export,pkl,kl; 1087 const char *ver,*exp_str; 1088 const char *kx,*au,*enc,*mac; 1089 unsigned long alg,alg2,alg_s; 1090#ifdef KSSL_DEBUG 1091 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n"; 1092#else 1093 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1094#endif /* KSSL_DEBUG */ 1095 1096 alg=cipher->algorithms; 1097 alg_s=cipher->algo_strength; 1098 alg2=cipher->algorithm2; 1099 1100 is_export=SSL_C_IS_EXPORT(cipher); 1101 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1102 kl=SSL_C_EXPORT_KEYLENGTH(cipher); 1103 exp_str=is_export?" export":""; 1104 1105 if (alg & SSL_SSLV2) 1106 ver="SSLv2"; 1107 else if (alg & SSL_SSLV3) 1108 ver="SSLv3"; 1109 else 1110 ver="unknown"; 1111 1112 switch (alg&SSL_MKEY_MASK) 1113 { 1114 case SSL_kRSA: 1115 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; 1116 break; 1117 case SSL_kDHr: 1118 kx="DH/RSA"; 1119 break; 1120 case SSL_kDHd: 1121 kx="DH/DSS"; 1122 break; 1123 case SSL_kKRB5: /* VRS */ 1124 case SSL_KRB5: /* VRS */ 1125 kx="KRB5"; 1126 break; 1127 case SSL_kFZA: 1128 kx="Fortezza"; 1129 break; 1130 case SSL_kEDH: 1131 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; 1132 break; 1133 case SSL_kECDH: 1134 case SSL_kECDHE: 1135 kx=is_export?"ECDH(<=163)":"ECDH"; 1136 break; 1137 default: 1138 kx="unknown"; 1139 } 1140 1141 switch (alg&SSL_AUTH_MASK) 1142 { 1143 case SSL_aRSA: 1144 au="RSA"; 1145 break; 1146 case SSL_aDSS: 1147 au="DSS"; 1148 break; 1149 case SSL_aDH: 1150 au="DH"; 1151 break; 1152 case SSL_aKRB5: /* VRS */ 1153 case SSL_KRB5: /* VRS */ 1154 au="KRB5"; 1155 break; 1156 case SSL_aFZA: 1157 case SSL_aNULL: 1158 au="None"; 1159 break; 1160 case SSL_aECDSA: 1161 au="ECDSA"; 1162 break; 1163 default: 1164 au="unknown"; 1165 break; 1166 } 1167 1168 switch (alg&SSL_ENC_MASK) 1169 { 1170 case SSL_DES: 1171 enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; 1172 break; 1173 case SSL_3DES: 1174 enc="3DES(168)"; 1175 break; 1176 case SSL_RC4: 1177 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") 1178 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); 1179 break; 1180 case SSL_RC2: 1181 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; 1182 break; 1183 case SSL_IDEA: 1184 enc="IDEA(128)"; 1185 break; 1186 case SSL_eFZA: 1187 enc="Fortezza"; 1188 break; 1189 case SSL_eNULL: 1190 enc="None"; 1191 break; 1192 case SSL_AES: 1193 switch(cipher->strength_bits) 1194 { 1195 case 128: enc="AES(128)"; break; 1196 case 192: enc="AES(192)"; break; 1197 case 256: enc="AES(256)"; break; 1198 default: enc="AES(?""?""?)"; break; 1199 } 1200 break; 1201 case SSL_CAMELLIA: 1202 switch(cipher->strength_bits) 1203 { 1204 case 128: enc="Camellia(128)"; break; 1205 case 256: enc="Camellia(256)"; break; 1206 default: enc="Camellia(?""?""?)"; break; 1207 } 1208 break; 1209 case SSL_SEED: 1210 enc="SEED(128)"; 1211 break; 1212 1213 default: 1214 enc="unknown"; 1215 break; 1216 } 1217 1218 switch (alg&SSL_MAC_MASK) 1219 { 1220 case SSL_MD5: 1221 mac="MD5"; 1222 break; 1223 case SSL_SHA1: 1224 mac="SHA1"; 1225 break; 1226 default: 1227 mac="unknown"; 1228 break; 1229 } 1230 1231 if (buf == NULL) 1232 { 1233 len=128; 1234 buf=OPENSSL_malloc(len); 1235 if (buf == NULL) return("OPENSSL_malloc Error"); 1236 } 1237 else if (len < 128) 1238 return("Buffer too small"); 1239 1240#ifdef KSSL_DEBUG 1241 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg); 1242#else 1243 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); 1244#endif /* KSSL_DEBUG */ 1245 return(buf); 1246 } 1247 1248char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1249 { 1250 int i; 1251 1252 if (c == NULL) return("(NONE)"); 1253 i=(int)(c->id>>24L); 1254 if (i == 3) 1255 return("TLSv1/SSLv3"); 1256 else if (i == 2) 1257 return("SSLv2"); 1258 else 1259 return("unknown"); 1260 } 1261 1262/* return the actual cipher being used */ 1263const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1264 { 1265 if (c != NULL) 1266 return(c->name); 1267 return("(NONE)"); 1268 } 1269 1270/* number of bits for symmetric cipher */ 1271int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1272 { 1273 int ret=0; 1274 1275 if (c != NULL) 1276 { 1277 if (alg_bits != NULL) *alg_bits = c->alg_bits; 1278 ret = c->strength_bits; 1279 } 1280 return(ret); 1281 } 1282 1283SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1284 { 1285 SSL_COMP *ctmp; 1286 int i,nn; 1287 1288 if ((n == 0) || (sk == NULL)) return(NULL); 1289 nn=sk_SSL_COMP_num(sk); 1290 for (i=0; i<nn; i++) 1291 { 1292 ctmp=sk_SSL_COMP_value(sk,i); 1293 if (ctmp->id == n) 1294 return(ctmp); 1295 } 1296 return(NULL); 1297 } 1298 1299#ifdef OPENSSL_NO_COMP 1300void *SSL_COMP_get_compression_methods(void) 1301 { 1302 return NULL; 1303 } 1304int SSL_COMP_add_compression_method(int id, void *cm) 1305 { 1306 return 1; 1307 } 1308 1309const char *SSL_COMP_get_name(const void *comp) 1310 { 1311 return NULL; 1312 } 1313#else 1314STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1315 { 1316 load_builtin_compressions(); 1317 return(ssl_comp_methods); 1318 } 1319 1320int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1321 { 1322 SSL_COMP *comp; 1323 1324 if (cm == NULL || cm->type == NID_undef) 1325 return 1; 1326 1327 /* According to draft-ietf-tls-compression-04.txt, the 1328 compression number ranges should be the following: 1329 1330 0 to 63: methods defined by the IETF 1331 64 to 192: external party methods assigned by IANA 1332 193 to 255: reserved for private use */ 1333 if (id < 193 || id > 255) 1334 { 1335 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1336 return 0; 1337 } 1338 1339 MemCheck_off(); 1340 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1341 comp->id=id; 1342 comp->method=cm; 1343 load_builtin_compressions(); 1344 if (ssl_comp_methods 1345 && !sk_SSL_COMP_find(ssl_comp_methods,comp)) 1346 { 1347 OPENSSL_free(comp); 1348 MemCheck_on(); 1349 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); 1350 return(1); 1351 } 1352 else if ((ssl_comp_methods == NULL) 1353 || !sk_SSL_COMP_push(ssl_comp_methods,comp)) 1354 { 1355 OPENSSL_free(comp); 1356 MemCheck_on(); 1357 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); 1358 return(1); 1359 } 1360 else 1361 { 1362 MemCheck_on(); 1363 return(0); 1364 } 1365 } 1366 1367const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1368 { 1369 if (comp) 1370 return comp->name; 1371 return NULL; 1372 } 1373 1374#endif 1375