ssl_ciph.c revision 279265
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#ifndef OPENSSL_NO_IDEA 199 {0,SSL_TXT_IDEA,0,SSL_IDEA, 0,0,0,0,SSL_ENC_MASK,0}, 200#endif 201 {0,SSL_TXT_SEED,0,SSL_SEED, 0,0,0,0,SSL_ENC_MASK,0}, 202 {0,SSL_TXT_eNULL,0,SSL_eNULL,0,0,0,0,SSL_ENC_MASK,0}, 203 {0,SSL_TXT_eFZA,0,SSL_eFZA, 0,0,0,0,SSL_ENC_MASK,0}, 204 {0,SSL_TXT_AES, 0,SSL_AES, 0,0,0,0,SSL_ENC_MASK,0}, 205 {0,SSL_TXT_CAMELLIA,0,SSL_CAMELLIA, 0,0,0,0,SSL_ENC_MASK,0}, 206 207 {0,SSL_TXT_MD5, 0,SSL_MD5, 0,0,0,0,SSL_MAC_MASK,0}, 208 {0,SSL_TXT_SHA1,0,SSL_SHA1, 0,0,0,0,SSL_MAC_MASK,0}, 209 {0,SSL_TXT_SHA, 0,SSL_SHA, 0,0,0,0,SSL_MAC_MASK,0}, 210 211 {0,SSL_TXT_NULL,0,SSL_NULL, 0,0,0,0,SSL_ENC_MASK,0}, 212 {0,SSL_TXT_KRB5,0,SSL_KRB5, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 213 {0,SSL_TXT_RSA, 0,SSL_RSA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 214 {0,SSL_TXT_ADH, 0,SSL_ADH, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK,0}, 215 {0,SSL_TXT_FZA, 0,SSL_FZA, 0,0,0,0,SSL_AUTH_MASK|SSL_MKEY_MASK|SSL_ENC_MASK,0}, 216 217 {0,SSL_TXT_SSLV2, 0,SSL_SSLV2, 0,0,0,0,SSL_SSL_MASK,0}, 218 {0,SSL_TXT_SSLV3, 0,SSL_SSLV3, 0,0,0,0,SSL_SSL_MASK,0}, 219 {0,SSL_TXT_TLSV1, 0,SSL_TLSV1, 0,0,0,0,SSL_SSL_MASK,0}, 220 221 {0,SSL_TXT_EXP ,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, 222 {0,SSL_TXT_EXPORT,0, 0,SSL_EXPORT, 0,0,0,0,SSL_EXP_MASK}, 223 {0,SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0,0,0,0,SSL_STRONG_MASK}, 224 {0,SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0,0,0,0,SSL_STRONG_MASK}, 225 {0,SSL_TXT_LOW, 0, 0, SSL_LOW, 0,0,0,0,SSL_STRONG_MASK}, 226 {0,SSL_TXT_MEDIUM,0, 0,SSL_MEDIUM, 0,0,0,0,SSL_STRONG_MASK}, 227 {0,SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0,0,0,0,SSL_STRONG_MASK}, 228 {0,SSL_TXT_FIPS, 0, 0, SSL_FIPS, 0,0,0,0,SSL_FIPS|SSL_STRONG_NONE}, 229 }; 230 231void ssl_load_ciphers(void) 232 { 233 ssl_cipher_methods[SSL_ENC_DES_IDX]= 234 EVP_get_cipherbyname(SN_des_cbc); 235 ssl_cipher_methods[SSL_ENC_3DES_IDX]= 236 EVP_get_cipherbyname(SN_des_ede3_cbc); 237 ssl_cipher_methods[SSL_ENC_RC4_IDX]= 238 EVP_get_cipherbyname(SN_rc4); 239 ssl_cipher_methods[SSL_ENC_RC2_IDX]= 240 EVP_get_cipherbyname(SN_rc2_cbc); 241#ifndef OPENSSL_NO_IDEA 242 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= 243 EVP_get_cipherbyname(SN_idea_cbc); 244#else 245 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL; 246#endif 247 ssl_cipher_methods[SSL_ENC_AES128_IDX]= 248 EVP_get_cipherbyname(SN_aes_128_cbc); 249 ssl_cipher_methods[SSL_ENC_AES256_IDX]= 250 EVP_get_cipherbyname(SN_aes_256_cbc); 251 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= 252 EVP_get_cipherbyname(SN_camellia_128_cbc); 253 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= 254 EVP_get_cipherbyname(SN_camellia_256_cbc); 255 ssl_cipher_methods[SSL_ENC_SEED_IDX]= 256 EVP_get_cipherbyname(SN_seed_cbc); 257 258 ssl_digest_methods[SSL_MD_MD5_IDX]= 259 EVP_get_digestbyname(SN_md5); 260 ssl_digest_methods[SSL_MD_SHA1_IDX]= 261 EVP_get_digestbyname(SN_sha1); 262 } 263 264 265#ifndef OPENSSL_NO_COMP 266 267static int sk_comp_cmp(const SSL_COMP * const *a, 268 const SSL_COMP * const *b) 269 { 270 return((*a)->id-(*b)->id); 271 } 272 273static void load_builtin_compressions(void) 274 { 275 int got_write_lock = 0; 276 277 CRYPTO_r_lock(CRYPTO_LOCK_SSL); 278 if (ssl_comp_methods == NULL) 279 { 280 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 281 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 282 got_write_lock = 1; 283 284 if (ssl_comp_methods == NULL) 285 { 286 SSL_COMP *comp = NULL; 287 288 MemCheck_off(); 289 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); 290 if (ssl_comp_methods != NULL) 291 { 292 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 293 if (comp != NULL) 294 { 295 comp->method=COMP_zlib(); 296 if (comp->method 297 && comp->method->type == NID_undef) 298 OPENSSL_free(comp); 299 else 300 { 301 comp->id=SSL_COMP_ZLIB_IDX; 302 comp->name=comp->method->name; 303 sk_SSL_COMP_push(ssl_comp_methods,comp); 304 } 305 } 306 sk_SSL_COMP_sort(ssl_comp_methods); 307 } 308 MemCheck_on(); 309 } 310 } 311 312 if (got_write_lock) 313 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 314 else 315 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 316 } 317#endif 318 319int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 320 const EVP_MD **md, SSL_COMP **comp) 321 { 322 int i; 323 SSL_CIPHER *c; 324 325 c=s->cipher; 326 if (c == NULL) return(0); 327 if (comp != NULL) 328 { 329 SSL_COMP ctmp; 330#ifndef OPENSSL_NO_COMP 331 load_builtin_compressions(); 332#endif 333 334 *comp=NULL; 335 ctmp.id=s->compress_meth; 336 if (ssl_comp_methods != NULL) 337 { 338 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); 339 if (i >= 0) 340 *comp=sk_SSL_COMP_value(ssl_comp_methods,i); 341 else 342 *comp=NULL; 343 } 344 } 345 346 if ((enc == NULL) || (md == NULL)) return(0); 347 348 switch (c->algorithms & SSL_ENC_MASK) 349 { 350 case SSL_DES: 351 i=SSL_ENC_DES_IDX; 352 break; 353 case SSL_3DES: 354 i=SSL_ENC_3DES_IDX; 355 break; 356 case SSL_RC4: 357 i=SSL_ENC_RC4_IDX; 358 break; 359 case SSL_RC2: 360 i=SSL_ENC_RC2_IDX; 361 break; 362 case SSL_IDEA: 363 i=SSL_ENC_IDEA_IDX; 364 break; 365 case SSL_eNULL: 366 i=SSL_ENC_NULL_IDX; 367 break; 368 case SSL_AES: 369 switch(c->alg_bits) 370 { 371 case 128: i=SSL_ENC_AES128_IDX; break; 372 case 256: i=SSL_ENC_AES256_IDX; break; 373 default: i=-1; break; 374 } 375 break; 376 case SSL_CAMELLIA: 377 switch(c->alg_bits) 378 { 379 case 128: i=SSL_ENC_CAMELLIA128_IDX; break; 380 case 256: i=SSL_ENC_CAMELLIA256_IDX; break; 381 default: i=-1; break; 382 } 383 break; 384 case SSL_SEED: 385 i=SSL_ENC_SEED_IDX; 386 break; 387 388 default: 389 i= -1; 390 break; 391 } 392 393 if ((i < 0) || (i >= SSL_ENC_NUM_IDX)) 394 *enc=NULL; 395 else 396 { 397 if (i == SSL_ENC_NULL_IDX) 398 *enc=EVP_enc_null(); 399 else 400 *enc=ssl_cipher_methods[i]; 401 } 402 403 switch (c->algorithms & SSL_MAC_MASK) 404 { 405 case SSL_MD5: 406 i=SSL_MD_MD5_IDX; 407 break; 408 case SSL_SHA1: 409 i=SSL_MD_SHA1_IDX; 410 break; 411 default: 412 i= -1; 413 break; 414 } 415 if ((i < 0) || (i >= SSL_MD_NUM_IDX)) 416 *md=NULL; 417 else 418 *md=ssl_digest_methods[i]; 419 420 if ((*enc != NULL) && (*md != NULL)) 421 return(1); 422 else 423 return(0); 424 } 425 426#define ITEM_SEP(a) \ 427 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) 428 429static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, 430 CIPHER_ORDER **tail) 431 { 432 if (curr == *tail) return; 433 if (curr == *head) 434 *head=curr->next; 435 if (curr->prev != NULL) 436 curr->prev->next=curr->next; 437 if (curr->next != NULL) /* should always be true */ 438 curr->next->prev=curr->prev; 439 (*tail)->next=curr; 440 curr->prev= *tail; 441 curr->next=NULL; 442 *tail=curr; 443 } 444 445struct disabled_masks { /* This is a kludge no longer needed with OpenSSL 0.9.9, 446 * where 128-bit and 256-bit algorithms simply will get 447 * separate bits. */ 448 unsigned long mask; /* everything except m256 */ 449 unsigned long m256; /* applies to 256-bit algorithms only */ 450}; 451 452static struct disabled_masks ssl_cipher_get_disabled(void) 453 { 454 unsigned long mask; 455 unsigned long m256; 456 struct disabled_masks ret; 457 458 mask = SSL_kFZA; 459#ifdef OPENSSL_NO_RSA 460 mask |= SSL_aRSA|SSL_kRSA; 461#endif 462#ifdef OPENSSL_NO_DSA 463 mask |= SSL_aDSS; 464#endif 465#ifdef OPENSSL_NO_DH 466 mask |= SSL_kDHr|SSL_kDHd|SSL_kEDH|SSL_aDH; 467#endif 468#ifdef OPENSSL_NO_KRB5 469 mask |= SSL_kKRB5|SSL_aKRB5; 470#endif 471#ifdef OPENSSL_NO_ECDH 472 mask |= SSL_kECDH|SSL_kECDHE; 473#endif 474#ifdef SSL_FORBID_ENULL 475 mask |= SSL_eNULL; 476#endif 477 478 mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; 479 mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; 480 mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; 481 mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; 482 mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; 483 mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA:0; 484 mask |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; 485 486 mask |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; 487 mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; 488 489 /* finally consider algorithms where mask and m256 differ */ 490 m256 = mask; 491 mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES:0; 492 mask |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA:0; 493 m256 |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES:0; 494 m256 |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA:0; 495 496 ret.mask = mask; 497 ret.m256 = m256; 498 return ret; 499 } 500 501static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, 502 int num_of_ciphers, unsigned long mask, unsigned long m256, 503 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, 504 CIPHER_ORDER **tail_p) 505 { 506 int i, co_list_num; 507 SSL_CIPHER *c; 508 509 /* 510 * We have num_of_ciphers descriptions compiled in, depending on the 511 * method selected (SSLv2 and/or SSLv3, TLSv1 etc). 512 * These will later be sorted in a linked list with at most num 513 * entries. 514 */ 515 516 /* Get the initial list of ciphers */ 517 co_list_num = 0; /* actual count of ciphers */ 518 for (i = 0; i < num_of_ciphers; i++) 519 { 520 c = ssl_method->get_cipher(i); 521#define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask)) 522 /* drop those that use any of that is not available */ 523#ifdef OPENSSL_FIPS 524 if ((c != NULL) && c->valid && !IS_MASKED(c) 525 && (!FIPS_mode() || (c->algo_strength & SSL_FIPS))) 526#else 527 if ((c != NULL) && c->valid && !IS_MASKED(c)) 528#endif 529 { 530 co_list[co_list_num].cipher = c; 531 co_list[co_list_num].next = NULL; 532 co_list[co_list_num].prev = NULL; 533 co_list[co_list_num].active = 0; 534 co_list_num++; 535#ifdef KSSL_DEBUG 536 printf("\t%d: %s %lx %lx\n",i,c->name,c->id,c->algorithms); 537#endif /* KSSL_DEBUG */ 538 /* 539 if (!sk_push(ca_list,(char *)c)) goto err; 540 */ 541 } 542 } 543 544 /* 545 * Prepare linked list from list entries 546 */ 547 for (i = 1; i < co_list_num - 1; i++) 548 { 549 co_list[i].prev = &(co_list[i-1]); 550 co_list[i].next = &(co_list[i+1]); 551 } 552 if (co_list_num > 0) 553 { 554 (*head_p) = &(co_list[0]); 555 (*head_p)->prev = NULL; 556 (*head_p)->next = &(co_list[1]); 557 (*tail_p) = &(co_list[co_list_num - 1]); 558 (*tail_p)->prev = &(co_list[co_list_num - 2]); 559 (*tail_p)->next = NULL; 560 } 561 } 562 563static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list, 564 int num_of_group_aliases, unsigned long mask, 565 CIPHER_ORDER *head) 566 { 567 CIPHER_ORDER *ciph_curr; 568 SSL_CIPHER **ca_curr; 569 int i; 570 571 /* 572 * First, add the real ciphers as already collected 573 */ 574 ciph_curr = head; 575 ca_curr = ca_list; 576 while (ciph_curr != NULL) 577 { 578 *ca_curr = ciph_curr->cipher; 579 ca_curr++; 580 ciph_curr = ciph_curr->next; 581 } 582 583 /* 584 * Now we add the available ones from the cipher_aliases[] table. 585 * They represent either an algorithm, that must be fully 586 * supported (not match any bit in mask) or represent a cipher 587 * strength value (will be added in any case because algorithms=0). 588 */ 589 for (i = 0; i < num_of_group_aliases; i++) 590 { 591 if ((i == 0) || /* always fetch "ALL" */ 592 !(cipher_aliases[i].algorithms & mask)) 593 { 594 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); 595 ca_curr++; 596 } 597 } 598 599 *ca_curr = NULL; /* end of list */ 600 } 601 602static void ssl_cipher_apply_rule(unsigned long cipher_id, unsigned long ssl_version, 603 unsigned long algorithms, unsigned long mask, 604 unsigned long algo_strength, unsigned long mask_strength, 605 int rule, int strength_bits, CIPHER_ORDER *co_list, 606 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 607 { 608 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2; 609 SSL_CIPHER *cp; 610 unsigned long ma, ma_s; 611 612#ifdef CIPHER_DEBUG 613 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n", 614 rule, algorithms, mask, algo_strength, mask_strength, 615 strength_bits); 616#endif 617 618 curr = head = *head_p; 619 curr2 = head; 620 tail2 = tail = *tail_p; 621 for (;;) 622 { 623 if ((curr == NULL) || (curr == tail2)) break; 624 curr = curr2; 625 curr2 = curr->next; 626 627 cp = curr->cipher; 628 629 /* If explicit cipher suite, match only that one for its own protocol version. 630 * Usual selection criteria will be used for similar ciphersuites from other version! */ 631 632 if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version) 633 { 634 if (cp->id != cipher_id) 635 continue; 636 } 637 638 /* 639 * Selection criteria is either the number of strength_bits 640 * or the algorithm used. 641 */ 642 else if (strength_bits == -1) 643 { 644 ma = mask & cp->algorithms; 645 ma_s = mask_strength & cp->algo_strength; 646 647#ifdef CIPHER_DEBUG 648 printf("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", cp->name, cp->algorithms, cp->algo_strength, mask, mask_strength); 649 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", ma, ma_s, ma&algorithms, ma_s&algo_strength); 650#endif 651 /* 652 * Select: if none of the mask bit was met from the 653 * cipher or not all of the bits were met, the 654 * selection does not apply. 655 */ 656 if (((ma == 0) && (ma_s == 0)) || 657 ((ma & algorithms) != ma) || 658 ((ma_s & algo_strength) != ma_s)) 659 continue; /* does not apply */ 660 } 661 else if (strength_bits != cp->strength_bits) 662 continue; /* does not apply */ 663 664#ifdef CIPHER_DEBUG 665 printf("Action = %d\n", rule); 666#endif 667 668 /* add the cipher if it has not been added yet. */ 669 if (rule == CIPHER_ADD) 670 { 671 if (!curr->active) 672 { 673 int add_this_cipher = 1; 674 675 if (((cp->algorithms & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0)) 676 { 677 /* Make sure "ECCdraft" ciphersuites are activated only if 678 * *explicitly* requested, but not implicitly (such as 679 * as part of the "AES" alias). */ 680 681 add_this_cipher = (mask & (SSL_kECDHE|SSL_kECDH|SSL_aECDSA)) != 0 || cipher_id != 0; 682 } 683 684 if (add_this_cipher) 685 { 686 ll_append_tail(&head, curr, &tail); 687 curr->active = 1; 688 } 689 } 690 } 691 /* Move the added cipher to this location */ 692 else if (rule == CIPHER_ORD) 693 { 694 if (curr->active) 695 { 696 ll_append_tail(&head, curr, &tail); 697 } 698 } 699 else if (rule == CIPHER_DEL) 700 curr->active = 0; 701 else if (rule == CIPHER_KILL) 702 { 703 if (head == curr) 704 head = curr->next; 705 else 706 curr->prev->next = curr->next; 707 if (tail == curr) 708 tail = curr->prev; 709 curr->active = 0; 710 if (curr->next != NULL) 711 curr->next->prev = curr->prev; 712 if (curr->prev != NULL) 713 curr->prev->next = curr->next; 714 curr->next = NULL; 715 curr->prev = NULL; 716 } 717 } 718 719 *head_p = head; 720 *tail_p = tail; 721 } 722 723static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list, 724 CIPHER_ORDER **head_p, 725 CIPHER_ORDER **tail_p) 726 { 727 int max_strength_bits, i, *number_uses; 728 CIPHER_ORDER *curr; 729 730 /* 731 * This routine sorts the ciphers with descending strength. The sorting 732 * must keep the pre-sorted sequence, so we apply the normal sorting 733 * routine as '+' movement to the end of the list. 734 */ 735 max_strength_bits = 0; 736 curr = *head_p; 737 while (curr != NULL) 738 { 739 if (curr->active && 740 (curr->cipher->strength_bits > max_strength_bits)) 741 max_strength_bits = curr->cipher->strength_bits; 742 curr = curr->next; 743 } 744 745 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 746 if (!number_uses) 747 { 748 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); 749 return(0); 750 } 751 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 752 753 /* 754 * Now find the strength_bits values actually used 755 */ 756 curr = *head_p; 757 while (curr != NULL) 758 { 759 if (curr->active) 760 number_uses[curr->cipher->strength_bits]++; 761 curr = curr->next; 762 } 763 /* 764 * Go through the list of used strength_bits values in descending 765 * order. 766 */ 767 for (i = max_strength_bits; i >= 0; i--) 768 if (number_uses[i] > 0) 769 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i, 770 co_list, head_p, tail_p); 771 772 OPENSSL_free(number_uses); 773 return(1); 774 } 775 776static int ssl_cipher_process_rulestr(const char *rule_str, 777 CIPHER_ORDER *co_list, CIPHER_ORDER **head_p, 778 CIPHER_ORDER **tail_p, SSL_CIPHER **ca_list) 779 { 780 unsigned long algorithms, mask, algo_strength, mask_strength; 781 const char *l, *buf; 782 int j, multi, found, rule, retval, ok, buflen; 783 unsigned long cipher_id = 0, ssl_version = 0; 784 char ch; 785 786 retval = 1; 787 l = rule_str; 788 for (;;) 789 { 790 ch = *l; 791 792 if (ch == '\0') 793 break; /* done */ 794 if (ch == '-') 795 { rule = CIPHER_DEL; l++; } 796 else if (ch == '+') 797 { rule = CIPHER_ORD; l++; } 798 else if (ch == '!') 799 { rule = CIPHER_KILL; l++; } 800 else if (ch == '@') 801 { rule = CIPHER_SPECIAL; l++; } 802 else 803 { rule = CIPHER_ADD; } 804 805 if (ITEM_SEP(ch)) 806 { 807 l++; 808 continue; 809 } 810 811 algorithms = mask = algo_strength = mask_strength = 0; 812 813 for (;;) 814 { 815 ch = *l; 816 buf = l; 817 buflen = 0; 818#ifndef CHARSET_EBCDIC 819 while ( ((ch >= 'A') && (ch <= 'Z')) || 820 ((ch >= '0') && (ch <= '9')) || 821 ((ch >= 'a') && (ch <= 'z')) || 822 (ch == '-')) 823#else 824 while ( isalnum(ch) || (ch == '-')) 825#endif 826 { 827 ch = *(++l); 828 buflen++; 829 } 830 831 if (buflen == 0) 832 { 833 /* 834 * We hit something we cannot deal with, 835 * it is no command or separator nor 836 * alphanumeric, so we call this an error. 837 */ 838 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 839 SSL_R_INVALID_COMMAND); 840 retval = found = 0; 841 l++; 842 break; 843 } 844 845 if (rule == CIPHER_SPECIAL) 846 { 847 found = 0; /* unused -- avoid compiler warning */ 848 break; /* special treatment */ 849 } 850 851 /* check for multi-part specification */ 852 if (ch == '+') 853 { 854 multi=1; 855 l++; 856 } 857 else 858 multi=0; 859 860 /* 861 * Now search for the cipher alias in the ca_list. Be careful 862 * with the strncmp, because the "buflen" limitation 863 * will make the rule "ADH:SOME" and the cipher 864 * "ADH-MY-CIPHER" look like a match for buflen=3. 865 * So additionally check whether the cipher name found 866 * has the correct length. We can save a strlen() call: 867 * just checking for the '\0' at the right place is 868 * sufficient, we have to strncmp() anyway. (We cannot 869 * use strcmp(), because buf is not '\0' terminated.) 870 */ 871 j = found = 0; 872 cipher_id = 0; 873 ssl_version = 0; 874 while (ca_list[j]) 875 { 876 if (!strncmp(buf, ca_list[j]->name, buflen) && 877 (ca_list[j]->name[buflen] == '\0')) 878 { 879 found = 1; 880 break; 881 } 882 else 883 j++; 884 } 885 if (!found) 886 break; /* ignore this entry */ 887 888 /* New algorithms: 889 * 1 - any old restrictions apply outside new mask 890 * 2 - any new restrictions apply outside old mask 891 * 3 - enforce old & new where masks intersect 892 */ 893 algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */ 894 (ca_list[j]->algorithms & ~mask) | /* 2 */ 895 (algorithms & ca_list[j]->algorithms); /* 3 */ 896 mask |= ca_list[j]->mask; 897 algo_strength = (algo_strength & ~ca_list[j]->mask_strength) | 898 (ca_list[j]->algo_strength & ~mask_strength) | 899 (algo_strength & ca_list[j]->algo_strength); 900 mask_strength |= ca_list[j]->mask_strength; 901 902 /* explicit ciphersuite found */ 903 if (ca_list[j]->valid) 904 { 905 cipher_id = ca_list[j]->id; 906 ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK; 907 break; 908 } 909 910 if (!multi) break; 911 } 912 913 /* 914 * Ok, we have the rule, now apply it 915 */ 916 if (rule == CIPHER_SPECIAL) 917 { /* special command */ 918 ok = 0; 919 if ((buflen == 8) && 920 !strncmp(buf, "STRENGTH", 8)) 921 ok = ssl_cipher_strength_sort(co_list, 922 head_p, tail_p); 923 else 924 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 925 SSL_R_INVALID_COMMAND); 926 if (ok == 0) 927 retval = 0; 928 /* 929 * We do not support any "multi" options 930 * together with "@", so throw away the 931 * rest of the command, if any left, until 932 * end or ':' is found. 933 */ 934 while ((*l != '\0') && !ITEM_SEP(*l)) 935 l++; 936 } 937 else if (found) 938 { 939 ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask, 940 algo_strength, mask_strength, rule, -1, 941 co_list, head_p, tail_p); 942 } 943 else 944 { 945 while ((*l != '\0') && !ITEM_SEP(*l)) 946 l++; 947 } 948 if (*l == '\0') break; /* done */ 949 } 950 951 return(retval); 952 } 953 954STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, 955 STACK_OF(SSL_CIPHER) **cipher_list, 956 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 957 const char *rule_str) 958 { 959 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 960 unsigned long disabled_mask; 961 unsigned long disabled_m256; 962 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 963 const char *rule_p; 964 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 965 SSL_CIPHER **ca_list = NULL; 966 967 /* 968 * Return with error if nothing to do. 969 */ 970 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 971 return NULL; 972 973 /* 974 * To reduce the work to do we only want to process the compiled 975 * in algorithms, so we first get the mask of disabled ciphers. 976 */ 977 { 978 struct disabled_masks d; 979 d = ssl_cipher_get_disabled(); 980 disabled_mask = d.mask; 981 disabled_m256 = d.m256; 982 } 983 984 /* 985 * Now we have to collect the available ciphers from the compiled 986 * in ciphers. We cannot get more than the number compiled in, so 987 * it is used for allocation. 988 */ 989 num_of_ciphers = ssl_method->num_ciphers(); 990#ifdef KSSL_DEBUG 991 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); 992#endif /* KSSL_DEBUG */ 993 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 994 if (co_list == NULL) 995 { 996 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 997 return(NULL); /* Failure */ 998 } 999 1000 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask, 1001 disabled_m256, co_list, &head, &tail); 1002 1003 /* 1004 * We also need cipher aliases for selecting based on the rule_str. 1005 * There might be two types of entries in the rule_str: 1) names 1006 * of ciphers themselves 2) aliases for groups of ciphers. 1007 * For 1) we need the available ciphers and for 2) the cipher 1008 * groups of cipher_aliases added together in one list (otherwise 1009 * we would be happy with just the cipher_aliases table). 1010 */ 1011 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 1012 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 1013 ca_list = 1014 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); 1015 if (ca_list == NULL) 1016 { 1017 OPENSSL_free(co_list); 1018 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1019 return(NULL); /* Failure */ 1020 } 1021 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, 1022 (disabled_mask & disabled_m256), head); 1023 1024 /* 1025 * If the rule_string begins with DEFAULT, apply the default rule 1026 * before using the (possibly available) additional rules. 1027 */ 1028 ok = 1; 1029 rule_p = rule_str; 1030 if (strncmp(rule_str,"DEFAULT",7) == 0) 1031 { 1032 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 1033 co_list, &head, &tail, ca_list); 1034 rule_p += 7; 1035 if (*rule_p == ':') 1036 rule_p++; 1037 } 1038 1039 if (ok && (strlen(rule_p) > 0)) 1040 ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail, 1041 ca_list); 1042 1043 OPENSSL_free(ca_list); /* Not needed anymore */ 1044 1045 if (!ok) 1046 { /* Rule processing failure */ 1047 OPENSSL_free(co_list); 1048 return(NULL); 1049 } 1050 /* 1051 * Allocate new "cipherstack" for the result, return with error 1052 * if we cannot get one. 1053 */ 1054 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) 1055 { 1056 OPENSSL_free(co_list); 1057 return(NULL); 1058 } 1059 1060 /* 1061 * The cipher selection for the list is done. The ciphers are added 1062 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1063 */ 1064 for (curr = head; curr != NULL; curr = curr->next) 1065 { 1066#ifdef OPENSSL_FIPS 1067 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) 1068#else 1069 if (curr->active) 1070#endif 1071 { 1072 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1073#ifdef CIPHER_DEBUG 1074 printf("<%s>\n",curr->cipher->name); 1075#endif 1076 } 1077 } 1078 OPENSSL_free(co_list); /* Not needed any longer */ 1079 1080 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1081 if (tmp_cipher_list == NULL) 1082 { 1083 sk_SSL_CIPHER_free(cipherstack); 1084 return NULL; 1085 } 1086 if (*cipher_list != NULL) 1087 sk_SSL_CIPHER_free(*cipher_list); 1088 *cipher_list = cipherstack; 1089 if (*cipher_list_by_id != NULL) 1090 sk_SSL_CIPHER_free(*cipher_list_by_id); 1091 *cipher_list_by_id = tmp_cipher_list; 1092 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); 1093 1094 sk_SSL_CIPHER_sort(*cipher_list_by_id); 1095 return(cipherstack); 1096 } 1097 1098char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) 1099 { 1100 int is_export,pkl,kl; 1101 const char *ver,*exp_str; 1102 const char *kx,*au,*enc,*mac; 1103 unsigned long alg,alg2; 1104#ifdef KSSL_DEBUG 1105 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n"; 1106#else 1107 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1108#endif /* KSSL_DEBUG */ 1109 1110 alg=cipher->algorithms; 1111 alg2=cipher->algorithm2; 1112 1113 is_export=SSL_C_IS_EXPORT(cipher); 1114 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1115 kl=SSL_C_EXPORT_KEYLENGTH(cipher); 1116 exp_str=is_export?" export":""; 1117 1118 if (alg & SSL_SSLV2) 1119 ver="SSLv2"; 1120 else if (alg & SSL_SSLV3) 1121 ver="SSLv3"; 1122 else 1123 ver="unknown"; 1124 1125 switch (alg&SSL_MKEY_MASK) 1126 { 1127 case SSL_kRSA: 1128 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; 1129 break; 1130 case SSL_kDHr: 1131 kx="DH/RSA"; 1132 break; 1133 case SSL_kDHd: 1134 kx="DH/DSS"; 1135 break; 1136 case SSL_kKRB5: /* VRS */ 1137 case SSL_KRB5: /* VRS */ 1138 kx="KRB5"; 1139 break; 1140 case SSL_kFZA: 1141 kx="Fortezza"; 1142 break; 1143 case SSL_kEDH: 1144 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; 1145 break; 1146 case SSL_kECDH: 1147 case SSL_kECDHE: 1148 kx=is_export?"ECDH(<=163)":"ECDH"; 1149 break; 1150 default: 1151 kx="unknown"; 1152 } 1153 1154 switch (alg&SSL_AUTH_MASK) 1155 { 1156 case SSL_aRSA: 1157 au="RSA"; 1158 break; 1159 case SSL_aDSS: 1160 au="DSS"; 1161 break; 1162 case SSL_aDH: 1163 au="DH"; 1164 break; 1165 case SSL_aKRB5: /* VRS */ 1166 case SSL_KRB5: /* VRS */ 1167 au="KRB5"; 1168 break; 1169 case SSL_aFZA: 1170 case SSL_aNULL: 1171 au="None"; 1172 break; 1173 case SSL_aECDSA: 1174 au="ECDSA"; 1175 break; 1176 default: 1177 au="unknown"; 1178 break; 1179 } 1180 1181 switch (alg&SSL_ENC_MASK) 1182 { 1183 case SSL_DES: 1184 enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; 1185 break; 1186 case SSL_3DES: 1187 enc="3DES(168)"; 1188 break; 1189 case SSL_RC4: 1190 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") 1191 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); 1192 break; 1193 case SSL_RC2: 1194 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; 1195 break; 1196 case SSL_IDEA: 1197 enc="IDEA(128)"; 1198 break; 1199 case SSL_eFZA: 1200 enc="Fortezza"; 1201 break; 1202 case SSL_eNULL: 1203 enc="None"; 1204 break; 1205 case SSL_AES: 1206 switch(cipher->strength_bits) 1207 { 1208 case 128: enc="AES(128)"; break; 1209 case 192: enc="AES(192)"; break; 1210 case 256: enc="AES(256)"; break; 1211 default: enc="AES(?""?""?)"; break; 1212 } 1213 break; 1214 case SSL_CAMELLIA: 1215 switch(cipher->strength_bits) 1216 { 1217 case 128: enc="Camellia(128)"; break; 1218 case 256: enc="Camellia(256)"; break; 1219 default: enc="Camellia(?""?""?)"; break; 1220 } 1221 break; 1222 case SSL_SEED: 1223 enc="SEED(128)"; 1224 break; 1225 1226 default: 1227 enc="unknown"; 1228 break; 1229 } 1230 1231 switch (alg&SSL_MAC_MASK) 1232 { 1233 case SSL_MD5: 1234 mac="MD5"; 1235 break; 1236 case SSL_SHA1: 1237 mac="SHA1"; 1238 break; 1239 default: 1240 mac="unknown"; 1241 break; 1242 } 1243 1244 if (buf == NULL) 1245 { 1246 len=128; 1247 buf=OPENSSL_malloc(len); 1248 if (buf == NULL) return("OPENSSL_malloc Error"); 1249 } 1250 else if (len < 128) 1251 return("Buffer too small"); 1252 1253#ifdef KSSL_DEBUG 1254 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg); 1255#else 1256 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); 1257#endif /* KSSL_DEBUG */ 1258 return(buf); 1259 } 1260 1261char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1262 { 1263 int i; 1264 1265 if (c == NULL) return("(NONE)"); 1266 i=(int)(c->id>>24L); 1267 if (i == 3) 1268 return("TLSv1/SSLv3"); 1269 else if (i == 2) 1270 return("SSLv2"); 1271 else 1272 return("unknown"); 1273 } 1274 1275/* return the actual cipher being used */ 1276const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1277 { 1278 if (c != NULL) 1279 return(c->name); 1280 return("(NONE)"); 1281 } 1282 1283/* number of bits for symmetric cipher */ 1284int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1285 { 1286 int ret=0; 1287 1288 if (c != NULL) 1289 { 1290 if (alg_bits != NULL) *alg_bits = c->alg_bits; 1291 ret = c->strength_bits; 1292 } 1293 return(ret); 1294 } 1295 1296SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1297 { 1298 SSL_COMP *ctmp; 1299 int i,nn; 1300 1301 if ((n == 0) || (sk == NULL)) return(NULL); 1302 nn=sk_SSL_COMP_num(sk); 1303 for (i=0; i<nn; i++) 1304 { 1305 ctmp=sk_SSL_COMP_value(sk,i); 1306 if (ctmp->id == n) 1307 return(ctmp); 1308 } 1309 return(NULL); 1310 } 1311 1312#ifdef OPENSSL_NO_COMP 1313void *SSL_COMP_get_compression_methods(void) 1314 { 1315 return NULL; 1316 } 1317int SSL_COMP_add_compression_method(int id, void *cm) 1318 { 1319 return 1; 1320 } 1321 1322const char *SSL_COMP_get_name(const void *comp) 1323 { 1324 return NULL; 1325 } 1326#else 1327STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1328 { 1329 load_builtin_compressions(); 1330 return(ssl_comp_methods); 1331 } 1332 1333int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1334 { 1335 SSL_COMP *comp; 1336 1337 if (cm == NULL || cm->type == NID_undef) 1338 return 1; 1339 1340 /* According to draft-ietf-tls-compression-04.txt, the 1341 compression number ranges should be the following: 1342 1343 0 to 63: methods defined by the IETF 1344 64 to 192: external party methods assigned by IANA 1345 193 to 255: reserved for private use */ 1346 if (id < 193 || id > 255) 1347 { 1348 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1349 return 0; 1350 } 1351 1352 MemCheck_off(); 1353 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1354 comp->id=id; 1355 comp->method=cm; 1356 load_builtin_compressions(); 1357 if (ssl_comp_methods 1358 && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0) 1359 { 1360 OPENSSL_free(comp); 1361 MemCheck_on(); 1362 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); 1363 return(1); 1364 } 1365 else if ((ssl_comp_methods == NULL) 1366 || !sk_SSL_COMP_push(ssl_comp_methods,comp)) 1367 { 1368 OPENSSL_free(comp); 1369 MemCheck_on(); 1370 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); 1371 return(1); 1372 } 1373 else 1374 { 1375 MemCheck_on(); 1376 return(0); 1377 } 1378 } 1379 1380const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1381 { 1382 if (comp) 1383 return comp->name; 1384 return NULL; 1385 } 1386 1387#endif 1388