ssl_ciph.c revision 296465
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 138static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX] = { 139 NULL, NULL, NULL, NULL, NULL, NULL, 140}; 141 142#define SSL_COMP_NULL_IDX 0 143#define SSL_COMP_ZLIB_IDX 1 144#define SSL_COMP_NUM_IDX 2 145 146static STACK_OF(SSL_COMP) *ssl_comp_methods = NULL; 147 148#define SSL_MD_MD5_IDX 0 149#define SSL_MD_SHA1_IDX 1 150#define SSL_MD_NUM_IDX 2 151static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX] = { 152 NULL, NULL, 153}; 154 155#define CIPHER_ADD 1 156#define CIPHER_KILL 2 157#define CIPHER_DEL 3 158#define CIPHER_ORD 4 159#define CIPHER_SPECIAL 5 160 161typedef struct cipher_order_st { 162 SSL_CIPHER *cipher; 163 int active; 164 int dead; 165 struct cipher_order_st *next, *prev; 166} CIPHER_ORDER; 167 168static const SSL_CIPHER cipher_aliases[] = { 169 /* Don't include eNULL unless specifically enabled. */ 170 /* 171 * Don't include ECC in ALL because these ciphers are not yet official. 172 */ 173 /* must be first */ 174 {0, SSL_TXT_ALL, 0, SSL_ALL & ~SSL_eNULL & ~SSL_kECDH & ~SSL_kECDHE, 175 SSL_ALL, 0, 0, 0, SSL_ALL, SSL_ALL}, 176 /* 177 * TODO: COMPLEMENT OF ALL do not have ECC cipher suites handled properly. 178 */ 179 /* COMPLEMENT OF ALL */ 180 {0, SSL_TXT_CMPALL, 0, SSL_eNULL, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 181 {0, SSL_TXT_CMPDEF, 0, SSL_ADH, SSL_EXP_MASK, 0, 0, 0, SSL_AUTH_MASK, 0}, 182 /* VRS Kerberos5 */ 183 {0, SSL_TXT_kKRB5, 0, SSL_kKRB5, 0, 0, 0, 0, SSL_MKEY_MASK, 0}, 184 {0, SSL_TXT_kRSA, 0, SSL_kRSA, 0, 0, 0, 0, SSL_MKEY_MASK, 0}, 185 {0, SSL_TXT_kDHr, 0, SSL_kDHr, 0, 0, 0, 0, SSL_MKEY_MASK, 0}, 186 {0, SSL_TXT_kDHd, 0, SSL_kDHd, 0, 0, 0, 0, SSL_MKEY_MASK, 0}, 187 {0, SSL_TXT_kEDH, 0, SSL_kEDH, 0, 0, 0, 0, SSL_MKEY_MASK, 0}, 188 {0, SSL_TXT_kFZA, 0, SSL_kFZA, 0, 0, 0, 0, SSL_MKEY_MASK, 0}, 189 {0, SSL_TXT_DH, 0, SSL_DH, 0, 0, 0, 0, SSL_MKEY_MASK, 0}, 190 {0, SSL_TXT_ECC, 0, (SSL_kECDH | SSL_kECDHE), 0, 0, 0, 0, SSL_MKEY_MASK, 191 0}, 192 {0, SSL_TXT_EDH, 0, SSL_EDH, 0, 0, 0, 0, SSL_MKEY_MASK | SSL_AUTH_MASK, 193 0}, 194 /* VRS Kerberos5 */ 195 {0, SSL_TXT_aKRB5, 0, SSL_aKRB5, 0, 0, 0, 0, SSL_AUTH_MASK, 0}, 196 {0, SSL_TXT_aRSA, 0, SSL_aRSA, 0, 0, 0, 0, SSL_AUTH_MASK, 0}, 197 {0, SSL_TXT_aDSS, 0, SSL_aDSS, 0, 0, 0, 0, SSL_AUTH_MASK, 0}, 198 {0, SSL_TXT_aFZA, 0, SSL_aFZA, 0, 0, 0, 0, SSL_AUTH_MASK, 0}, 199 {0, SSL_TXT_aNULL, 0, SSL_aNULL, 0, 0, 0, 0, SSL_AUTH_MASK, 0}, 200 {0, SSL_TXT_aDH, 0, SSL_aDH, 0, 0, 0, 0, SSL_AUTH_MASK, 0}, 201 {0, SSL_TXT_DSS, 0, SSL_DSS, 0, 0, 0, 0, SSL_AUTH_MASK, 0}, 202 203 {0, SSL_TXT_DES, 0, SSL_DES, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 204 {0, SSL_TXT_3DES, 0, SSL_3DES, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 205 {0, SSL_TXT_RC4, 0, SSL_RC4, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 206 {0, SSL_TXT_RC2, 0, SSL_RC2, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 207#ifndef OPENSSL_NO_IDEA 208 {0, SSL_TXT_IDEA, 0, SSL_IDEA, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 209#endif 210 {0, SSL_TXT_SEED, 0, SSL_SEED, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 211 {0, SSL_TXT_eNULL, 0, SSL_eNULL, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 212 {0, SSL_TXT_eFZA, 0, SSL_eFZA, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 213 {0, SSL_TXT_AES, 0, SSL_AES, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 214 {0, SSL_TXT_CAMELLIA, 0, SSL_CAMELLIA, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 215 216 {0, SSL_TXT_MD5, 0, SSL_MD5, 0, 0, 0, 0, SSL_MAC_MASK, 0}, 217 {0, SSL_TXT_SHA1, 0, SSL_SHA1, 0, 0, 0, 0, SSL_MAC_MASK, 0}, 218 {0, SSL_TXT_SHA, 0, SSL_SHA, 0, 0, 0, 0, SSL_MAC_MASK, 0}, 219 220 {0, SSL_TXT_NULL, 0, SSL_NULL, 0, 0, 0, 0, SSL_ENC_MASK, 0}, 221 {0, SSL_TXT_KRB5, 0, SSL_KRB5, 0, 0, 0, 0, SSL_AUTH_MASK | SSL_MKEY_MASK, 222 0}, 223 {0, SSL_TXT_RSA, 0, SSL_RSA, 0, 0, 0, 0, SSL_AUTH_MASK | SSL_MKEY_MASK, 224 0}, 225 {0, SSL_TXT_ADH, 0, SSL_ADH, 0, 0, 0, 0, SSL_AUTH_MASK | SSL_MKEY_MASK, 226 0}, 227 {0, SSL_TXT_FZA, 0, SSL_FZA, 0, 0, 0, 0, 228 SSL_AUTH_MASK | SSL_MKEY_MASK | SSL_ENC_MASK, 0}, 229 230 {0, SSL_TXT_SSLV2, 0, SSL_SSLV2, 0, 0, 0, 0, SSL_SSL_MASK, 0}, 231 {0, SSL_TXT_SSLV3, 0, SSL_SSLV3, 0, 0, 0, 0, SSL_SSL_MASK, 0}, 232 {0, SSL_TXT_TLSV1, 0, SSL_TLSV1, 0, 0, 0, 0, SSL_SSL_MASK, 0}, 233 234 {0, SSL_TXT_EXP, 0, 0, SSL_EXPORT, 0, 0, 0, 0, SSL_EXP_MASK}, 235 {0, SSL_TXT_EXPORT, 0, 0, SSL_EXPORT, 0, 0, 0, 0, SSL_EXP_MASK}, 236 {0, SSL_TXT_EXP40, 0, 0, SSL_EXP40, 0, 0, 0, 0, SSL_STRONG_MASK}, 237 {0, SSL_TXT_EXP56, 0, 0, SSL_EXP56, 0, 0, 0, 0, SSL_STRONG_MASK}, 238 {0, SSL_TXT_LOW, 0, 0, SSL_LOW, 0, 0, 0, 0, SSL_STRONG_MASK}, 239 {0, SSL_TXT_MEDIUM, 0, 0, SSL_MEDIUM, 0, 0, 0, 0, SSL_STRONG_MASK}, 240 {0, SSL_TXT_HIGH, 0, 0, SSL_HIGH, 0, 0, 0, 0, SSL_STRONG_MASK}, 241 {0, SSL_TXT_FIPS, 0, 0, SSL_FIPS, 0, 0, 0, 0, SSL_FIPS | SSL_STRONG_NONE}, 242}; 243 244void ssl_load_ciphers(void) 245{ 246 ssl_cipher_methods[SSL_ENC_DES_IDX] = EVP_get_cipherbyname(SN_des_cbc); 247 ssl_cipher_methods[SSL_ENC_3DES_IDX] = 248 EVP_get_cipherbyname(SN_des_ede3_cbc); 249 ssl_cipher_methods[SSL_ENC_RC4_IDX] = EVP_get_cipherbyname(SN_rc4); 250 ssl_cipher_methods[SSL_ENC_RC2_IDX] = EVP_get_cipherbyname(SN_rc2_cbc); 251#ifndef OPENSSL_NO_IDEA 252 ssl_cipher_methods[SSL_ENC_IDEA_IDX] = EVP_get_cipherbyname(SN_idea_cbc); 253#else 254 ssl_cipher_methods[SSL_ENC_IDEA_IDX] = NULL; 255#endif 256 ssl_cipher_methods[SSL_ENC_AES128_IDX] = 257 EVP_get_cipherbyname(SN_aes_128_cbc); 258 ssl_cipher_methods[SSL_ENC_AES256_IDX] = 259 EVP_get_cipherbyname(SN_aes_256_cbc); 260 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] = 261 EVP_get_cipherbyname(SN_camellia_128_cbc); 262 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] = 263 EVP_get_cipherbyname(SN_camellia_256_cbc); 264 ssl_cipher_methods[SSL_ENC_SEED_IDX] = EVP_get_cipherbyname(SN_seed_cbc); 265 266 ssl_digest_methods[SSL_MD_MD5_IDX] = EVP_get_digestbyname(SN_md5); 267 ssl_digest_methods[SSL_MD_SHA1_IDX] = EVP_get_digestbyname(SN_sha1); 268} 269 270#ifndef OPENSSL_NO_COMP 271 272static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b) 273{ 274 return ((*a)->id - (*b)->id); 275} 276 277static void load_builtin_compressions(void) 278{ 279 int got_write_lock = 0; 280 281 CRYPTO_r_lock(CRYPTO_LOCK_SSL); 282 if (ssl_comp_methods == NULL) { 283 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 284 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 285 got_write_lock = 1; 286 287 if (ssl_comp_methods == NULL) { 288 SSL_COMP *comp = NULL; 289 290 MemCheck_off(); 291 ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp); 292 if (ssl_comp_methods != NULL) { 293 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 294 if (comp != NULL) { 295 comp->method = COMP_zlib(); 296 if (comp->method && comp->method->type == NID_undef) 297 OPENSSL_free(comp); 298 else { 299 comp->id = SSL_COMP_ZLIB_IDX; 300 comp->name = comp->method->name; 301 sk_SSL_COMP_push(ssl_comp_methods, comp); 302 } 303 } 304 sk_SSL_COMP_sort(ssl_comp_methods); 305 } 306 MemCheck_on(); 307 } 308 } 309 310 if (got_write_lock) 311 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 312 else 313 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 314} 315#endif 316 317int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 318 const EVP_MD **md, SSL_COMP **comp) 319{ 320 int i; 321 SSL_CIPHER *c; 322 323 c = s->cipher; 324 if (c == NULL) 325 return (0); 326 if (comp != NULL) { 327 SSL_COMP ctmp; 328#ifndef OPENSSL_NO_COMP 329 load_builtin_compressions(); 330#endif 331 332 *comp = NULL; 333 ctmp.id = s->compress_meth; 334 if (ssl_comp_methods != NULL) { 335 i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp); 336 if (i >= 0) 337 *comp = sk_SSL_COMP_value(ssl_comp_methods, i); 338 else 339 *comp = NULL; 340 } 341 } 342 343 if ((enc == NULL) || (md == NULL)) 344 return (0); 345 346 switch (c->algorithms & SSL_ENC_MASK) { 347 case SSL_DES: 348 i = SSL_ENC_DES_IDX; 349 break; 350 case SSL_3DES: 351 i = SSL_ENC_3DES_IDX; 352 break; 353 case SSL_RC4: 354 i = SSL_ENC_RC4_IDX; 355 break; 356 case SSL_RC2: 357 i = SSL_ENC_RC2_IDX; 358 break; 359 case SSL_IDEA: 360 i = SSL_ENC_IDEA_IDX; 361 break; 362 case SSL_eNULL: 363 i = SSL_ENC_NULL_IDX; 364 break; 365 case SSL_AES: 366 switch (c->alg_bits) { 367 case 128: 368 i = SSL_ENC_AES128_IDX; 369 break; 370 case 256: 371 i = SSL_ENC_AES256_IDX; 372 break; 373 default: 374 i = -1; 375 break; 376 } 377 break; 378 case SSL_CAMELLIA: 379 switch (c->alg_bits) { 380 case 128: 381 i = SSL_ENC_CAMELLIA128_IDX; 382 break; 383 case 256: 384 i = SSL_ENC_CAMELLIA256_IDX; 385 break; 386 default: 387 i = -1; 388 break; 389 } 390 break; 391 case SSL_SEED: 392 i = SSL_ENC_SEED_IDX; 393 break; 394 395 default: 396 i = -1; 397 break; 398 } 399 400 if ((i < 0) || (i >= SSL_ENC_NUM_IDX)) 401 *enc = NULL; 402 else { 403 if (i == SSL_ENC_NULL_IDX) 404 *enc = EVP_enc_null(); 405 else 406 *enc = ssl_cipher_methods[i]; 407 } 408 409 switch (c->algorithms & SSL_MAC_MASK) { 410 case SSL_MD5: 411 i = SSL_MD_MD5_IDX; 412 break; 413 case SSL_SHA1: 414 i = SSL_MD_SHA1_IDX; 415 break; 416 default: 417 i = -1; 418 break; 419 } 420 if ((i < 0) || (i >= SSL_MD_NUM_IDX)) 421 *md = NULL; 422 else 423 *md = ssl_digest_methods[i]; 424 425 if ((*enc != NULL) && (*md != NULL)) 426 return (1); 427 else 428 return (0); 429} 430 431#define ITEM_SEP(a) \ 432 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) 433 434static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, 435 CIPHER_ORDER **tail) 436{ 437 if (curr == *tail) 438 return; 439 if (curr == *head) 440 *head = curr->next; 441 if (curr->prev != NULL) 442 curr->prev->next = curr->next; 443 if (curr->next != NULL) /* should always be true */ 444 curr->next->prev = curr->prev; 445 (*tail)->next = curr; 446 curr->prev = *tail; 447 curr->next = NULL; 448 *tail = curr; 449} 450 451struct disabled_masks { /* This is a kludge no longer needed with 452 * OpenSSL 0.9.9, where 128-bit and 256-bit 453 * algorithms simply will get separate bits. */ 454 unsigned long mask; /* everything except m256 */ 455 unsigned long m256; /* applies to 256-bit algorithms only */ 456}; 457 458static struct disabled_masks ssl_cipher_get_disabled(void) 459{ 460 unsigned long mask; 461 unsigned long m256; 462 struct disabled_masks ret; 463 464 mask = SSL_kFZA; 465#ifdef OPENSSL_NO_RSA 466 mask |= SSL_aRSA | SSL_kRSA; 467#endif 468#ifdef OPENSSL_NO_DSA 469 mask |= SSL_aDSS; 470#endif 471#ifdef OPENSSL_NO_DH 472 mask |= SSL_kDHr | SSL_kDHd | SSL_kEDH | SSL_aDH; 473#endif 474#ifdef OPENSSL_NO_KRB5 475 mask |= SSL_kKRB5 | SSL_aKRB5; 476#endif 477#ifdef OPENSSL_NO_ECDH 478 mask |= SSL_kECDH | SSL_kECDHE; 479#endif 480#ifdef SSL_FORBID_ENULL 481 mask |= SSL_eNULL; 482#endif 483 484 mask |= (ssl_cipher_methods[SSL_ENC_DES_IDX] == NULL) ? SSL_DES : 0; 485 mask |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES : 0; 486 mask |= (ssl_cipher_methods[SSL_ENC_RC4_IDX] == NULL) ? SSL_RC4 : 0; 487 mask |= (ssl_cipher_methods[SSL_ENC_RC2_IDX] == NULL) ? SSL_RC2 : 0; 488 mask |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA : 0; 489 mask |= (ssl_cipher_methods[SSL_ENC_eFZA_IDX] == NULL) ? SSL_eFZA : 0; 490 mask |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED : 0; 491 492 mask |= (ssl_digest_methods[SSL_MD_MD5_IDX] == NULL) ? SSL_MD5 : 0; 493 mask |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1 : 0; 494 495 /* finally consider algorithms where mask and m256 differ */ 496 m256 = mask; 497 mask |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES : 0; 498 mask |= 499 (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == 500 NULL) ? SSL_CAMELLIA : 0; 501 m256 |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES : 0; 502 m256 |= 503 (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == 504 NULL) ? SSL_CAMELLIA : 0; 505 506 ret.mask = mask; 507 ret.m256 = m256; 508 return ret; 509} 510 511static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, 512 int num_of_ciphers, unsigned long mask, 513 unsigned long m256, 514 CIPHER_ORDER *co_list, 515 CIPHER_ORDER **head_p, 516 CIPHER_ORDER **tail_p) 517{ 518 int i, co_list_num; 519 SSL_CIPHER *c; 520 521 /* 522 * We have num_of_ciphers descriptions compiled in, depending on the 523 * method selected (SSLv2 and/or SSLv3, TLSv1 etc). 524 * These will later be sorted in a linked list with at most num 525 * entries. 526 */ 527 528 /* Get the initial list of ciphers */ 529 co_list_num = 0; /* actual count of ciphers */ 530 for (i = 0; i < num_of_ciphers; i++) { 531 c = ssl_method->get_cipher(i); 532#define IS_MASKED(c) ((c)->algorithms & (((c)->alg_bits == 256) ? m256 : mask)) 533 /* drop those that use any of that is not available */ 534#ifdef OPENSSL_FIPS 535 if ((c != NULL) && c->valid && !IS_MASKED(c) 536 && (!FIPS_mode() || (c->algo_strength & SSL_FIPS))) 537#else 538 if ((c != NULL) && c->valid && !IS_MASKED(c)) 539#endif 540 { 541 co_list[co_list_num].cipher = c; 542 co_list[co_list_num].next = NULL; 543 co_list[co_list_num].prev = NULL; 544 co_list[co_list_num].active = 0; 545 co_list_num++; 546#ifdef KSSL_DEBUG 547 printf("\t%d: %s %lx %lx\n", i, c->name, c->id, c->algorithms); 548#endif /* KSSL_DEBUG */ 549 /* 550 * if (!sk_push(ca_list,(char *)c)) goto err; 551 */ 552 } 553 } 554 555 /* 556 * Prepare linked list from list entries 557 */ 558 for (i = 1; i < co_list_num - 1; i++) { 559 co_list[i].prev = &(co_list[i - 1]); 560 co_list[i].next = &(co_list[i + 1]); 561 } 562 if (co_list_num > 0) { 563 (*head_p) = &(co_list[0]); 564 (*head_p)->prev = NULL; 565 (*head_p)->next = &(co_list[1]); 566 (*tail_p) = &(co_list[co_list_num - 1]); 567 (*tail_p)->prev = &(co_list[co_list_num - 2]); 568 (*tail_p)->next = NULL; 569 } 570} 571 572static void ssl_cipher_collect_aliases(SSL_CIPHER **ca_list, 573 int num_of_group_aliases, 574 unsigned long mask, CIPHER_ORDER *head) 575{ 576 CIPHER_ORDER *ciph_curr; 577 SSL_CIPHER **ca_curr; 578 int i; 579 580 /* 581 * First, add the real ciphers as already collected 582 */ 583 ciph_curr = head; 584 ca_curr = ca_list; 585 while (ciph_curr != NULL) { 586 *ca_curr = ciph_curr->cipher; 587 ca_curr++; 588 ciph_curr = ciph_curr->next; 589 } 590 591 /* 592 * Now we add the available ones from the cipher_aliases[] table. 593 * They represent either an algorithm, that must be fully 594 * supported (not match any bit in mask) or represent a cipher 595 * strength value (will be added in any case because algorithms=0). 596 */ 597 for (i = 0; i < num_of_group_aliases; i++) { 598 if ((i == 0) || /* always fetch "ALL" */ 599 !(cipher_aliases[i].algorithms & mask)) { 600 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); 601 ca_curr++; 602 } 603 } 604 605 *ca_curr = NULL; /* end of list */ 606} 607 608static void ssl_cipher_apply_rule(unsigned long cipher_id, 609 unsigned long ssl_version, 610 unsigned long algorithms, 611 unsigned long mask, 612 unsigned long algo_strength, 613 unsigned long mask_strength, int rule, 614 int strength_bits, CIPHER_ORDER *co_list, 615 CIPHER_ORDER **head_p, 616 CIPHER_ORDER **tail_p) 617{ 618 CIPHER_ORDER *head, *tail, *curr, *curr2, *tail2; 619 SSL_CIPHER *cp; 620 unsigned long ma, ma_s; 621 622#ifdef CIPHER_DEBUG 623 printf("Applying rule %d with %08lx %08lx %08lx %08lx (%d)\n", 624 rule, algorithms, mask, algo_strength, mask_strength, 625 strength_bits); 626#endif 627 628 curr = head = *head_p; 629 curr2 = head; 630 tail2 = tail = *tail_p; 631 for (;;) { 632 if ((curr == NULL) || (curr == tail2)) 633 break; 634 curr = curr2; 635 curr2 = curr->next; 636 637 cp = curr->cipher; 638 /* Special case: only satisfied by COMPLEMENTOFDEFAULT */ 639 if (algo_strength == SSL_EXP_MASK) { 640 if ((SSL_C_IS_EXPORT(cp) || cp->algorithms & SSL_SSLV2 641 || cp->algorithms & SSL_aNULL) 642 && !(cp->algorithms & (SSL_kECDHE|SSL_kECDH))) 643 goto ok; 644 else 645 continue; 646 } 647 648 /* 649 * If explicit cipher suite, match only that one for its own protocol 650 * version. Usual selection criteria will be used for similar 651 * ciphersuites from other version! 652 */ 653 654 if (cipher_id && (cp->algorithms & SSL_SSL_MASK) == ssl_version) { 655 if (cp->id != cipher_id) 656 continue; 657 } 658 659 /* 660 * Selection criteria is either the number of strength_bits 661 * or the algorithm used. 662 */ 663 else if (strength_bits == -1) { 664 ma = mask & cp->algorithms; 665 ma_s = mask_strength & cp->algo_strength; 666 667#ifdef CIPHER_DEBUG 668 printf 669 ("\nName: %s:\nAlgo = %08lx Algo_strength = %08lx\nMask = %08lx Mask_strength %08lx\n", 670 cp->name, cp->algorithms, cp->algo_strength, mask, 671 mask_strength); 672 printf("ma = %08lx ma_s %08lx, ma&algo=%08lx, ma_s&algos=%08lx\n", 673 ma, ma_s, ma & algorithms, ma_s & algo_strength); 674#endif 675 /* 676 * Select: if none of the mask bit was met from the 677 * cipher or not all of the bits were met, the 678 * selection does not apply. 679 */ 680 if (((ma == 0) && (ma_s == 0)) || 681 ((ma & algorithms) != ma) || ((ma_s & algo_strength) != ma_s)) 682 continue; /* does not apply */ 683 } else if (strength_bits != cp->strength_bits) 684 continue; /* does not apply */ 685 686 ok: 687 688#ifdef CIPHER_DEBUG 689 printf("Action = %d\n", rule); 690#endif 691 692 /* add the cipher if it has not been added yet. */ 693 if (rule == CIPHER_ADD) { 694 if (!curr->active) { 695 int add_this_cipher = 1; 696 697 if (((cp->algorithms & (SSL_kECDHE | SSL_kECDH | SSL_aECDSA)) 698 != 0)) { 699 /* 700 * Make sure "ECCdraft" ciphersuites are activated only 701 * if *explicitly* requested, but not implicitly (such as 702 * as part of the "AES" alias). 703 */ 704 705 add_this_cipher = 706 (mask & (SSL_kECDHE | SSL_kECDH | SSL_aECDSA)) != 0 707 || cipher_id != 0; 708 } 709 710 if (add_this_cipher) { 711 ll_append_tail(&head, curr, &tail); 712 curr->active = 1; 713 } 714 } 715 } 716 /* Move the added cipher to this location */ 717 else if (rule == CIPHER_ORD) { 718 if (curr->active) { 719 ll_append_tail(&head, curr, &tail); 720 } 721 } else if (rule == CIPHER_DEL) 722 curr->active = 0; 723 else if (rule == CIPHER_KILL) { 724 if (head == curr) 725 head = curr->next; 726 else 727 curr->prev->next = curr->next; 728 if (tail == curr) 729 tail = curr->prev; 730 curr->active = 0; 731 if (curr->next != NULL) 732 curr->next->prev = curr->prev; 733 if (curr->prev != NULL) 734 curr->prev->next = curr->next; 735 curr->next = NULL; 736 curr->prev = NULL; 737 } 738 } 739 740 *head_p = head; 741 *tail_p = tail; 742} 743 744static int ssl_cipher_strength_sort(CIPHER_ORDER *co_list, 745 CIPHER_ORDER **head_p, 746 CIPHER_ORDER **tail_p) 747{ 748 int max_strength_bits, i, *number_uses; 749 CIPHER_ORDER *curr; 750 751 /* 752 * This routine sorts the ciphers with descending strength. The sorting 753 * must keep the pre-sorted sequence, so we apply the normal sorting 754 * routine as '+' movement to the end of the list. 755 */ 756 max_strength_bits = 0; 757 curr = *head_p; 758 while (curr != NULL) { 759 if (curr->active && (curr->cipher->strength_bits > max_strength_bits)) 760 max_strength_bits = curr->cipher->strength_bits; 761 curr = curr->next; 762 } 763 764 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 765 if (!number_uses) { 766 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE); 767 return (0); 768 } 769 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 770 771 /* 772 * Now find the strength_bits values actually used 773 */ 774 curr = *head_p; 775 while (curr != NULL) { 776 if (curr->active) 777 number_uses[curr->cipher->strength_bits]++; 778 curr = curr->next; 779 } 780 /* 781 * Go through the list of used strength_bits values in descending 782 * order. 783 */ 784 for (i = max_strength_bits; i >= 0; i--) 785 if (number_uses[i] > 0) 786 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, CIPHER_ORD, i, 787 co_list, head_p, tail_p); 788 789 OPENSSL_free(number_uses); 790 return (1); 791} 792 793static int ssl_cipher_process_rulestr(const char *rule_str, 794 CIPHER_ORDER *co_list, 795 CIPHER_ORDER **head_p, 796 CIPHER_ORDER **tail_p, 797 SSL_CIPHER **ca_list) 798{ 799 unsigned long algorithms, mask, algo_strength, mask_strength; 800 const char *l, *buf; 801 int j, multi, found, rule, retval, ok, buflen; 802 unsigned long cipher_id = 0, ssl_version = 0; 803 char ch; 804 805 retval = 1; 806 l = rule_str; 807 for (;;) { 808 ch = *l; 809 810 if (ch == '\0') 811 break; /* done */ 812 if (ch == '-') { 813 rule = CIPHER_DEL; 814 l++; 815 } else if (ch == '+') { 816 rule = CIPHER_ORD; 817 l++; 818 } else if (ch == '!') { 819 rule = CIPHER_KILL; 820 l++; 821 } else if (ch == '@') { 822 rule = CIPHER_SPECIAL; 823 l++; 824 } else { 825 rule = CIPHER_ADD; 826 } 827 828 if (ITEM_SEP(ch)) { 829 l++; 830 continue; 831 } 832 833 algorithms = mask = algo_strength = mask_strength = 0; 834 835 for (;;) { 836 ch = *l; 837 buf = l; 838 buflen = 0; 839#ifndef CHARSET_EBCDIC 840 while (((ch >= 'A') && (ch <= 'Z')) || 841 ((ch >= '0') && (ch <= '9')) || 842 ((ch >= 'a') && (ch <= 'z')) || (ch == '-')) 843#else 844 while (isalnum(ch) || (ch == '-')) 845#endif 846 { 847 ch = *(++l); 848 buflen++; 849 } 850 851 if (buflen == 0) { 852 /* 853 * We hit something we cannot deal with, 854 * it is no command or separator nor 855 * alphanumeric, so we call this an error. 856 */ 857 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 858 SSL_R_INVALID_COMMAND); 859 retval = found = 0; 860 l++; 861 break; 862 } 863 864 if (rule == CIPHER_SPECIAL) { 865 found = 0; /* unused -- avoid compiler warning */ 866 break; /* special treatment */ 867 } 868 869 /* check for multi-part specification */ 870 if (ch == '+') { 871 multi = 1; 872 l++; 873 } else 874 multi = 0; 875 876 /* 877 * Now search for the cipher alias in the ca_list. Be careful 878 * with the strncmp, because the "buflen" limitation 879 * will make the rule "ADH:SOME" and the cipher 880 * "ADH-MY-CIPHER" look like a match for buflen=3. 881 * So additionally check whether the cipher name found 882 * has the correct length. We can save a strlen() call: 883 * just checking for the '\0' at the right place is 884 * sufficient, we have to strncmp() anyway. (We cannot 885 * use strcmp(), because buf is not '\0' terminated.) 886 */ 887 j = found = 0; 888 cipher_id = 0; 889 ssl_version = 0; 890 while (ca_list[j]) { 891 if (!strncmp(buf, ca_list[j]->name, buflen) && 892 (ca_list[j]->name[buflen] == '\0')) { 893 found = 1; 894 break; 895 } else 896 j++; 897 } 898 if (!found) 899 break; /* ignore this entry */ 900 901 /*- 902 * New algorithms: 903 * 1 - any old restrictions apply outside new mask 904 * 2 - any new restrictions apply outside old mask 905 * 3 - enforce old & new where masks intersect 906 */ 907 algorithms = (algorithms & ~ca_list[j]->mask) | /* 1 */ 908 (ca_list[j]->algorithms & ~mask) | /* 2 */ 909 (algorithms & ca_list[j]->algorithms); /* 3 */ 910 mask |= ca_list[j]->mask; 911 algo_strength = (algo_strength & ~ca_list[j]->mask_strength) | 912 (ca_list[j]->algo_strength & ~mask_strength) | 913 (algo_strength & ca_list[j]->algo_strength); 914 mask_strength |= ca_list[j]->mask_strength; 915 916 /* explicit ciphersuite found */ 917 if (ca_list[j]->valid) { 918 cipher_id = ca_list[j]->id; 919 ssl_version = ca_list[j]->algorithms & SSL_SSL_MASK; 920 break; 921 } 922 923 if (!multi) 924 break; 925 } 926 927 /* 928 * Ok, we have the rule, now apply it 929 */ 930 if (rule == CIPHER_SPECIAL) { /* special command */ 931 ok = 0; 932 if ((buflen == 8) && !strncmp(buf, "STRENGTH", 8)) 933 ok = ssl_cipher_strength_sort(co_list, head_p, tail_p); 934 else 935 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 936 SSL_R_INVALID_COMMAND); 937 if (ok == 0) 938 retval = 0; 939 /* 940 * We do not support any "multi" options 941 * together with "@", so throw away the 942 * rest of the command, if any left, until 943 * end or ':' is found. 944 */ 945 while ((*l != '\0') && !ITEM_SEP(*l)) 946 l++; 947 } else if (found) { 948 ssl_cipher_apply_rule(cipher_id, ssl_version, algorithms, mask, 949 algo_strength, mask_strength, rule, -1, 950 co_list, head_p, tail_p); 951 } else { 952 while ((*l != '\0') && !ITEM_SEP(*l)) 953 l++; 954 } 955 if (*l == '\0') 956 break; /* done */ 957 } 958 959 return (retval); 960} 961 962STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER) 963 **cipher_list, STACK_OF(SSL_CIPHER) 964 **cipher_list_by_id, 965 const char *rule_str) 966{ 967 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 968 unsigned long disabled_mask; 969 unsigned long disabled_m256; 970 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 971 const char *rule_p; 972 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 973 SSL_CIPHER **ca_list = NULL; 974 975 /* 976 * Return with error if nothing to do. 977 */ 978 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 979 return NULL; 980 981 /* 982 * To reduce the work to do we only want to process the compiled 983 * in algorithms, so we first get the mask of disabled ciphers. 984 */ 985 { 986 struct disabled_masks d; 987 d = ssl_cipher_get_disabled(); 988 disabled_mask = d.mask; 989 disabled_m256 = d.m256; 990 } 991 992 /* 993 * Now we have to collect the available ciphers from the compiled 994 * in ciphers. We cannot get more than the number compiled in, so 995 * it is used for allocation. 996 */ 997 num_of_ciphers = ssl_method->num_ciphers(); 998#ifdef KSSL_DEBUG 999 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); 1000#endif /* KSSL_DEBUG */ 1001 co_list = 1002 (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 1003 if (co_list == NULL) { 1004 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1005 return (NULL); /* Failure */ 1006 } 1007 1008 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, disabled_mask, 1009 disabled_m256, co_list, &head, &tail); 1010 1011 /* 1012 * We also need cipher aliases for selecting based on the rule_str. 1013 * There might be two types of entries in the rule_str: 1) names 1014 * of ciphers themselves 2) aliases for groups of ciphers. 1015 * For 1) we need the available ciphers and for 2) the cipher 1016 * groups of cipher_aliases added together in one list (otherwise 1017 * we would be happy with just the cipher_aliases table). 1018 */ 1019 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 1020 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 1021 ca_list = 1022 (SSL_CIPHER **)OPENSSL_malloc(sizeof(SSL_CIPHER *) * 1023 num_of_alias_max); 1024 if (ca_list == NULL) { 1025 OPENSSL_free(co_list); 1026 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1027 return (NULL); /* Failure */ 1028 } 1029 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, 1030 (disabled_mask & disabled_m256), head); 1031 1032 /* 1033 * If the rule_string begins with DEFAULT, apply the default rule 1034 * before using the (possibly available) additional rules. 1035 */ 1036 ok = 1; 1037 rule_p = rule_str; 1038 if (strncmp(rule_str, "DEFAULT", 7) == 0) { 1039 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 1040 co_list, &head, &tail, ca_list); 1041 rule_p += 7; 1042 if (*rule_p == ':') 1043 rule_p++; 1044 } 1045 1046 if (ok && (strlen(rule_p) > 0)) 1047 ok = ssl_cipher_process_rulestr(rule_p, co_list, &head, &tail, 1048 ca_list); 1049 1050 OPENSSL_free(ca_list); /* Not needed anymore */ 1051 1052 if (!ok) { /* Rule processing failure */ 1053 OPENSSL_free(co_list); 1054 return (NULL); 1055 } 1056 /* 1057 * Allocate new "cipherstack" for the result, return with error 1058 * if we cannot get one. 1059 */ 1060 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) { 1061 OPENSSL_free(co_list); 1062 return (NULL); 1063 } 1064 1065 /* 1066 * The cipher selection for the list is done. The ciphers are added 1067 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1068 */ 1069 for (curr = head; curr != NULL; curr = curr->next) { 1070#ifdef OPENSSL_FIPS 1071 if (curr->active 1072 && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) 1073#else 1074 if (curr->active) 1075#endif 1076 { 1077 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1078#ifdef CIPHER_DEBUG 1079 printf("<%s>\n", curr->cipher->name); 1080#endif 1081 } 1082 } 1083 OPENSSL_free(co_list); /* Not needed any longer */ 1084 1085 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1086 if (tmp_cipher_list == NULL) { 1087 sk_SSL_CIPHER_free(cipherstack); 1088 return NULL; 1089 } 1090 if (*cipher_list != NULL) 1091 sk_SSL_CIPHER_free(*cipher_list); 1092 *cipher_list = cipherstack; 1093 if (*cipher_list_by_id != NULL) 1094 sk_SSL_CIPHER_free(*cipher_list_by_id); 1095 *cipher_list_by_id = tmp_cipher_list; 1096 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id, 1097 ssl_cipher_ptr_id_cmp); 1098 1099 sk_SSL_CIPHER_sort(*cipher_list_by_id); 1100 return (cipherstack); 1101} 1102 1103char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) 1104{ 1105 int is_export, pkl, kl; 1106 const char *ver, *exp_str; 1107 const char *kx, *au, *enc, *mac; 1108 unsigned long alg, alg2; 1109#ifdef KSSL_DEBUG 1110 static const char *format = 1111 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx\n"; 1112#else 1113 static const char *format = 1114 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1115#endif /* KSSL_DEBUG */ 1116 1117 alg = cipher->algorithms; 1118 alg2 = cipher->algorithm2; 1119 1120 is_export = SSL_C_IS_EXPORT(cipher); 1121 pkl = SSL_C_EXPORT_PKEYLENGTH(cipher); 1122 kl = SSL_C_EXPORT_KEYLENGTH(cipher); 1123 exp_str = is_export ? " export" : ""; 1124 1125 if (alg & SSL_SSLV2) 1126 ver = "SSLv2"; 1127 else if (alg & SSL_SSLV3) 1128 ver = "SSLv3"; 1129 else 1130 ver = "unknown"; 1131 1132 switch (alg & SSL_MKEY_MASK) { 1133 case SSL_kRSA: 1134 kx = is_export ? (pkl == 512 ? "RSA(512)" : "RSA(1024)") : "RSA"; 1135 break; 1136 case SSL_kDHr: 1137 kx = "DH/RSA"; 1138 break; 1139 case SSL_kDHd: 1140 kx = "DH/DSS"; 1141 break; 1142 case SSL_kKRB5: /* VRS */ 1143 case SSL_KRB5: /* VRS */ 1144 kx = "KRB5"; 1145 break; 1146 case SSL_kFZA: 1147 kx = "Fortezza"; 1148 break; 1149 case SSL_kEDH: 1150 kx = is_export ? (pkl == 512 ? "DH(512)" : "DH(1024)") : "DH"; 1151 break; 1152 case SSL_kECDH: 1153 case SSL_kECDHE: 1154 kx = is_export ? "ECDH(<=163)" : "ECDH"; 1155 break; 1156 default: 1157 kx = "unknown"; 1158 } 1159 1160 switch (alg & SSL_AUTH_MASK) { 1161 case SSL_aRSA: 1162 au = "RSA"; 1163 break; 1164 case SSL_aDSS: 1165 au = "DSS"; 1166 break; 1167 case SSL_aDH: 1168 au = "DH"; 1169 break; 1170 case SSL_aKRB5: /* VRS */ 1171 case SSL_KRB5: /* VRS */ 1172 au = "KRB5"; 1173 break; 1174 case SSL_aFZA: 1175 case SSL_aNULL: 1176 au = "None"; 1177 break; 1178 case SSL_aECDSA: 1179 au = "ECDSA"; 1180 break; 1181 default: 1182 au = "unknown"; 1183 break; 1184 } 1185 1186 switch (alg & SSL_ENC_MASK) { 1187 case SSL_DES: 1188 enc = (is_export && kl == 5) ? "DES(40)" : "DES(56)"; 1189 break; 1190 case SSL_3DES: 1191 enc = "3DES(168)"; 1192 break; 1193 case SSL_RC4: 1194 enc = is_export ? (kl == 5 ? "RC4(40)" : "RC4(56)") 1195 : ((alg2 & SSL2_CF_8_BYTE_ENC) ? "RC4(64)" : "RC4(128)"); 1196 break; 1197 case SSL_RC2: 1198 enc = is_export ? (kl == 5 ? "RC2(40)" : "RC2(56)") : "RC2(128)"; 1199 break; 1200 case SSL_IDEA: 1201 enc = "IDEA(128)"; 1202 break; 1203 case SSL_eFZA: 1204 enc = "Fortezza"; 1205 break; 1206 case SSL_eNULL: 1207 enc = "None"; 1208 break; 1209 case SSL_AES: 1210 switch (cipher->strength_bits) { 1211 case 128: 1212 enc = "AES(128)"; 1213 break; 1214 case 192: 1215 enc = "AES(192)"; 1216 break; 1217 case 256: 1218 enc = "AES(256)"; 1219 break; 1220 default: 1221 enc = "AES(?" "?" "?)"; 1222 break; 1223 } 1224 break; 1225 case SSL_CAMELLIA: 1226 switch (cipher->strength_bits) { 1227 case 128: 1228 enc = "Camellia(128)"; 1229 break; 1230 case 256: 1231 enc = "Camellia(256)"; 1232 break; 1233 default: 1234 enc = "Camellia(?" "?" "?)"; 1235 break; 1236 } 1237 break; 1238 case SSL_SEED: 1239 enc = "SEED(128)"; 1240 break; 1241 1242 default: 1243 enc = "unknown"; 1244 break; 1245 } 1246 1247 switch (alg & SSL_MAC_MASK) { 1248 case SSL_MD5: 1249 mac = "MD5"; 1250 break; 1251 case SSL_SHA1: 1252 mac = "SHA1"; 1253 break; 1254 default: 1255 mac = "unknown"; 1256 break; 1257 } 1258 1259 if (buf == NULL) { 1260 len = 128; 1261 buf = OPENSSL_malloc(len); 1262 if (buf == NULL) 1263 return ("OPENSSL_malloc Error"); 1264 } else if (len < 128) 1265 return ("Buffer too small"); 1266 1267#ifdef KSSL_DEBUG 1268 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac, 1269 exp_str, alg); 1270#else 1271 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac, 1272 exp_str); 1273#endif /* KSSL_DEBUG */ 1274 return (buf); 1275} 1276 1277char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1278{ 1279 int i; 1280 1281 if (c == NULL) 1282 return ("(NONE)"); 1283 i = (int)(c->id >> 24L); 1284 if (i == 3) 1285 return ("TLSv1/SSLv3"); 1286 else if (i == 2) 1287 return ("SSLv2"); 1288 else 1289 return ("unknown"); 1290} 1291 1292/* return the actual cipher being used */ 1293const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1294{ 1295 if (c != NULL) 1296 return (c->name); 1297 return ("(NONE)"); 1298} 1299 1300/* number of bits for symmetric cipher */ 1301int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1302{ 1303 int ret = 0; 1304 1305 if (c != NULL) { 1306 if (alg_bits != NULL) 1307 *alg_bits = c->alg_bits; 1308 ret = c->strength_bits; 1309 } 1310 return (ret); 1311} 1312 1313SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1314{ 1315 SSL_COMP *ctmp; 1316 int i, nn; 1317 1318 if ((n == 0) || (sk == NULL)) 1319 return (NULL); 1320 nn = sk_SSL_COMP_num(sk); 1321 for (i = 0; i < nn; i++) { 1322 ctmp = sk_SSL_COMP_value(sk, i); 1323 if (ctmp->id == n) 1324 return (ctmp); 1325 } 1326 return (NULL); 1327} 1328 1329#ifdef OPENSSL_NO_COMP 1330void *SSL_COMP_get_compression_methods(void) 1331{ 1332 return NULL; 1333} 1334 1335int SSL_COMP_add_compression_method(int id, void *cm) 1336{ 1337 return 1; 1338} 1339 1340const char *SSL_COMP_get_name(const void *comp) 1341{ 1342 return NULL; 1343} 1344#else 1345STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1346{ 1347 load_builtin_compressions(); 1348 return (ssl_comp_methods); 1349} 1350 1351int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1352{ 1353 SSL_COMP *comp; 1354 1355 if (cm == NULL || cm->type == NID_undef) 1356 return 1; 1357 1358 /*- 1359 * According to draft-ietf-tls-compression-04.txt, the 1360 * compression number ranges should be the following: 1361 * 1362 * 0 to 63: methods defined by the IETF 1363 * 64 to 192: external party methods assigned by IANA 1364 * 193 to 255: reserved for private use 1365 */ 1366 if (id < 193 || id > 255) { 1367 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, 1368 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1369 return 0; 1370 } 1371 1372 MemCheck_off(); 1373 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1374 comp->id = id; 1375 comp->method = cm; 1376 load_builtin_compressions(); 1377 if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) { 1378 OPENSSL_free(comp); 1379 MemCheck_on(); 1380 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, 1381 SSL_R_DUPLICATE_COMPRESSION_ID); 1382 return (1); 1383 } else if ((ssl_comp_methods == NULL) 1384 || !sk_SSL_COMP_push(ssl_comp_methods, comp)) { 1385 OPENSSL_free(comp); 1386 MemCheck_on(); 1387 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE); 1388 return (1); 1389 } else { 1390 MemCheck_on(); 1391 return (0); 1392 } 1393} 1394 1395const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1396{ 1397 if (comp) 1398 return comp->name; 1399 return NULL; 1400} 1401 1402#endif 1403