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