ssl_ciph.c revision 291721
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) 1998-2007 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/* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143#include <stdio.h> 144#include <openssl/objects.h> 145#ifndef OPENSSL_NO_COMP 146# include <openssl/comp.h> 147#endif 148#ifndef OPENSSL_NO_ENGINE 149# include <openssl/engine.h> 150#endif 151#include "ssl_locl.h" 152 153#define SSL_ENC_DES_IDX 0 154#define SSL_ENC_3DES_IDX 1 155#define SSL_ENC_RC4_IDX 2 156#define SSL_ENC_RC2_IDX 3 157#define SSL_ENC_IDEA_IDX 4 158#define SSL_ENC_NULL_IDX 5 159#define SSL_ENC_AES128_IDX 6 160#define SSL_ENC_AES256_IDX 7 161#define SSL_ENC_CAMELLIA128_IDX 8 162#define SSL_ENC_CAMELLIA256_IDX 9 163#define SSL_ENC_GOST89_IDX 10 164#define SSL_ENC_SEED_IDX 11 165#define SSL_ENC_AES128GCM_IDX 12 166#define SSL_ENC_AES256GCM_IDX 13 167#define SSL_ENC_NUM_IDX 14 168 169static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX] = { 170 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 171 NULL, NULL 172}; 173 174#define SSL_COMP_NULL_IDX 0 175#define SSL_COMP_ZLIB_IDX 1 176#define SSL_COMP_NUM_IDX 2 177 178static STACK_OF(SSL_COMP) *ssl_comp_methods = NULL; 179 180#define SSL_MD_MD5_IDX 0 181#define SSL_MD_SHA1_IDX 1 182#define SSL_MD_GOST94_IDX 2 183#define SSL_MD_GOST89MAC_IDX 3 184#define SSL_MD_SHA256_IDX 4 185#define SSL_MD_SHA384_IDX 5 186/* 187 * Constant SSL_MAX_DIGEST equal to size of digests array should be defined 188 * in the ssl_locl.h 189 */ 190#define SSL_MD_NUM_IDX SSL_MAX_DIGEST 191static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX] = { 192 NULL, NULL, NULL, NULL, NULL, NULL 193}; 194 195/* 196 * PKEY_TYPE for GOST89MAC is known in advance, but, because implementation 197 * is engine-provided, we'll fill it only if corresponding EVP_PKEY_METHOD is 198 * found 199 */ 200static int ssl_mac_pkey_id[SSL_MD_NUM_IDX] = { 201 EVP_PKEY_HMAC, EVP_PKEY_HMAC, EVP_PKEY_HMAC, NID_undef, 202 EVP_PKEY_HMAC, EVP_PKEY_HMAC 203}; 204 205static int ssl_mac_secret_size[SSL_MD_NUM_IDX] = { 206 0, 0, 0, 0, 0, 0 207}; 208 209static int ssl_handshake_digest_flag[SSL_MD_NUM_IDX] = { 210 SSL_HANDSHAKE_MAC_MD5, SSL_HANDSHAKE_MAC_SHA, 211 SSL_HANDSHAKE_MAC_GOST94, 0, SSL_HANDSHAKE_MAC_SHA256, 212 SSL_HANDSHAKE_MAC_SHA384 213}; 214 215#define CIPHER_ADD 1 216#define CIPHER_KILL 2 217#define CIPHER_DEL 3 218#define CIPHER_ORD 4 219#define CIPHER_SPECIAL 5 220 221typedef struct cipher_order_st { 222 const SSL_CIPHER *cipher; 223 int active; 224 int dead; 225 struct cipher_order_st *next, *prev; 226} CIPHER_ORDER; 227 228static const SSL_CIPHER cipher_aliases[] = { 229 /* "ALL" doesn't include eNULL (must be specifically enabled) */ 230 {0, SSL_TXT_ALL, 0, 0, 0, ~SSL_eNULL, 0, 0, 0, 0, 0, 0}, 231 /* "COMPLEMENTOFALL" */ 232 {0, SSL_TXT_CMPALL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0}, 233 234 /* 235 * "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in 236 * ALL!) 237 */ 238 {0, SSL_TXT_CMPDEF, 0, 0, SSL_aNULL, ~SSL_eNULL, 0, ~SSL_SSLV2, 239 SSL_EXP_MASK, 0, 0, 0}, 240 241 /* 242 * key exchange aliases (some of those using only a single bit here 243 * combine multiple key exchange algs according to the RFCs, e.g. kEDH 244 * combines DHE_DSS and DHE_RSA) 245 */ 246 {0, SSL_TXT_kRSA, 0, SSL_kRSA, 0, 0, 0, 0, 0, 0, 0, 0}, 247 248 /* no such ciphersuites supported! */ 249 {0, SSL_TXT_kDHr, 0, SSL_kDHr, 0, 0, 0, 0, 0, 0, 0, 0}, 250 /* no such ciphersuites supported! */ 251 {0, SSL_TXT_kDHd, 0, SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0}, 252 /* no such ciphersuites supported! */ 253 {0, SSL_TXT_kDH, 0, SSL_kDHr | SSL_kDHd, 0, 0, 0, 0, 0, 0, 0, 0}, 254 {0, SSL_TXT_kEDH, 0, SSL_kEDH, 0, 0, 0, 0, 0, 0, 0, 0}, 255 {0, SSL_TXT_DH, 0, SSL_kDHr | SSL_kDHd | SSL_kEDH, 0, 0, 0, 0, 0, 0, 0, 256 0}, 257 258 {0, SSL_TXT_kKRB5, 0, SSL_kKRB5, 0, 0, 0, 0, 0, 0, 0, 0}, 259 260 {0, SSL_TXT_kECDHr, 0, SSL_kECDHr, 0, 0, 0, 0, 0, 0, 0, 0}, 261 {0, SSL_TXT_kECDHe, 0, SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0}, 262 {0, SSL_TXT_kECDH, 0, SSL_kECDHr | SSL_kECDHe, 0, 0, 0, 0, 0, 0, 0, 0}, 263 {0, SSL_TXT_kEECDH, 0, SSL_kEECDH, 0, 0, 0, 0, 0, 0, 0, 0}, 264 {0, SSL_TXT_ECDH, 0, SSL_kECDHr | SSL_kECDHe | SSL_kEECDH, 0, 0, 0, 0, 0, 265 0, 0, 0}, 266 267 {0, SSL_TXT_kPSK, 0, SSL_kPSK, 0, 0, 0, 0, 0, 0, 0, 0}, 268 {0, SSL_TXT_kSRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0}, 269 {0, SSL_TXT_kGOST, 0, SSL_kGOST, 0, 0, 0, 0, 0, 0, 0, 0}, 270 271 /* server authentication aliases */ 272 {0, SSL_TXT_aRSA, 0, 0, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0}, 273 {0, SSL_TXT_aDSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0}, 274 {0, SSL_TXT_DSS, 0, 0, SSL_aDSS, 0, 0, 0, 0, 0, 0, 0}, 275 {0, SSL_TXT_aKRB5, 0, 0, SSL_aKRB5, 0, 0, 0, 0, 0, 0, 0}, 276 {0, SSL_TXT_aNULL, 0, 0, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, 277 /* no such ciphersuites supported! */ 278 {0, SSL_TXT_aDH, 0, 0, SSL_aDH, 0, 0, 0, 0, 0, 0, 0}, 279 {0, SSL_TXT_aECDH, 0, 0, SSL_aECDH, 0, 0, 0, 0, 0, 0, 0}, 280 {0, SSL_TXT_aECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0}, 281 {0, SSL_TXT_ECDSA, 0, 0, SSL_aECDSA, 0, 0, 0, 0, 0, 0, 0}, 282 {0, SSL_TXT_aPSK, 0, 0, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0}, 283 {0, SSL_TXT_aGOST94, 0, 0, SSL_aGOST94, 0, 0, 0, 0, 0, 0, 0}, 284 {0, SSL_TXT_aGOST01, 0, 0, SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0}, 285 {0, SSL_TXT_aGOST, 0, 0, SSL_aGOST94 | SSL_aGOST01, 0, 0, 0, 0, 0, 0, 0}, 286 {0, SSL_TXT_aSRP, 0, 0, SSL_aSRP, 0, 0, 0, 0, 0, 0, 0}, 287 288 /* aliases combining key exchange and server authentication */ 289 {0, SSL_TXT_EDH, 0, SSL_kEDH, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, 290 {0, SSL_TXT_EECDH, 0, SSL_kEECDH, ~SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, 291 {0, SSL_TXT_NULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0}, 292 {0, SSL_TXT_KRB5, 0, SSL_kKRB5, SSL_aKRB5, 0, 0, 0, 0, 0, 0, 0}, 293 {0, SSL_TXT_RSA, 0, SSL_kRSA, SSL_aRSA, 0, 0, 0, 0, 0, 0, 0}, 294 {0, SSL_TXT_ADH, 0, SSL_kEDH, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, 295 {0, SSL_TXT_AECDH, 0, SSL_kEECDH, SSL_aNULL, 0, 0, 0, 0, 0, 0, 0}, 296 {0, SSL_TXT_PSK, 0, SSL_kPSK, SSL_aPSK, 0, 0, 0, 0, 0, 0, 0}, 297 {0, SSL_TXT_SRP, 0, SSL_kSRP, 0, 0, 0, 0, 0, 0, 0, 0}, 298 299 /* symmetric encryption aliases */ 300 {0, SSL_TXT_DES, 0, 0, 0, SSL_DES, 0, 0, 0, 0, 0, 0}, 301 {0, SSL_TXT_3DES, 0, 0, 0, SSL_3DES, 0, 0, 0, 0, 0, 0}, 302 {0, SSL_TXT_RC4, 0, 0, 0, SSL_RC4, 0, 0, 0, 0, 0, 0}, 303 {0, SSL_TXT_RC2, 0, 0, 0, SSL_RC2, 0, 0, 0, 0, 0, 0}, 304 {0, SSL_TXT_IDEA, 0, 0, 0, SSL_IDEA, 0, 0, 0, 0, 0, 0}, 305 {0, SSL_TXT_SEED, 0, 0, 0, SSL_SEED, 0, 0, 0, 0, 0, 0}, 306 {0, SSL_TXT_eNULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0}, 307 {0, SSL_TXT_AES128, 0, 0, 0, SSL_AES128 | SSL_AES128GCM, 0, 0, 0, 0, 0, 308 0}, 309 {0, SSL_TXT_AES256, 0, 0, 0, SSL_AES256 | SSL_AES256GCM, 0, 0, 0, 0, 0, 310 0}, 311 {0, SSL_TXT_AES, 0, 0, 0, SSL_AES, 0, 0, 0, 0, 0, 0}, 312 {0, SSL_TXT_AES_GCM, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM, 0, 0, 0, 0, 313 0, 0}, 314 {0, SSL_TXT_CAMELLIA128, 0, 0, 0, SSL_CAMELLIA128, 0, 0, 0, 0, 0, 0}, 315 {0, SSL_TXT_CAMELLIA256, 0, 0, 0, SSL_CAMELLIA256, 0, 0, 0, 0, 0, 0}, 316 {0, SSL_TXT_CAMELLIA, 0, 0, 0, SSL_CAMELLIA128 | SSL_CAMELLIA256, 0, 0, 0, 317 0, 0, 0}, 318 319 /* MAC aliases */ 320 {0, SSL_TXT_MD5, 0, 0, 0, 0, SSL_MD5, 0, 0, 0, 0, 0}, 321 {0, SSL_TXT_SHA1, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0}, 322 {0, SSL_TXT_SHA, 0, 0, 0, 0, SSL_SHA1, 0, 0, 0, 0, 0}, 323 {0, SSL_TXT_GOST94, 0, 0, 0, 0, SSL_GOST94, 0, 0, 0, 0, 0}, 324 {0, SSL_TXT_GOST89MAC, 0, 0, 0, 0, SSL_GOST89MAC, 0, 0, 0, 0, 0}, 325 {0, SSL_TXT_SHA256, 0, 0, 0, 0, SSL_SHA256, 0, 0, 0, 0, 0}, 326 {0, SSL_TXT_SHA384, 0, 0, 0, 0, SSL_SHA384, 0, 0, 0, 0, 0}, 327 328 /* protocol version aliases */ 329 {0, SSL_TXT_SSLV2, 0, 0, 0, 0, 0, SSL_SSLV2, 0, 0, 0, 0}, 330 {0, SSL_TXT_SSLV3, 0, 0, 0, 0, 0, SSL_SSLV3, 0, 0, 0, 0}, 331 {0, SSL_TXT_TLSV1, 0, 0, 0, 0, 0, SSL_TLSV1, 0, 0, 0, 0}, 332 {0, SSL_TXT_TLSV1_2, 0, 0, 0, 0, 0, SSL_TLSV1_2, 0, 0, 0, 0}, 333 334 /* export flag */ 335 {0, SSL_TXT_EXP, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0}, 336 {0, SSL_TXT_EXPORT, 0, 0, 0, 0, 0, 0, SSL_EXPORT, 0, 0, 0}, 337 338 /* strength classes */ 339 {0, SSL_TXT_EXP40, 0, 0, 0, 0, 0, 0, SSL_EXP40, 0, 0, 0}, 340 {0, SSL_TXT_EXP56, 0, 0, 0, 0, 0, 0, SSL_EXP56, 0, 0, 0}, 341 {0, SSL_TXT_LOW, 0, 0, 0, 0, 0, 0, SSL_LOW, 0, 0, 0}, 342 {0, SSL_TXT_MEDIUM, 0, 0, 0, 0, 0, 0, SSL_MEDIUM, 0, 0, 0}, 343 {0, SSL_TXT_HIGH, 0, 0, 0, 0, 0, 0, SSL_HIGH, 0, 0, 0}, 344 /* FIPS 140-2 approved ciphersuite */ 345 {0, SSL_TXT_FIPS, 0, 0, 0, ~SSL_eNULL, 0, 0, SSL_FIPS, 0, 0, 0}, 346}; 347 348/* 349 * Search for public key algorithm with given name and return its pkey_id if 350 * it is available. Otherwise return 0 351 */ 352#ifdef OPENSSL_NO_ENGINE 353 354static int get_optional_pkey_id(const char *pkey_name) 355{ 356 const EVP_PKEY_ASN1_METHOD *ameth; 357 int pkey_id = 0; 358 ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1); 359 if (ameth && EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, 360 ameth) > 0) { 361 return pkey_id; 362 } 363 return 0; 364} 365 366#else 367 368static int get_optional_pkey_id(const char *pkey_name) 369{ 370 const EVP_PKEY_ASN1_METHOD *ameth; 371 ENGINE *tmpeng = NULL; 372 int pkey_id = 0; 373 ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1); 374 if (ameth) { 375 if (EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, 376 ameth) <= 0) 377 pkey_id = 0; 378 } 379 if (tmpeng) 380 ENGINE_finish(tmpeng); 381 return pkey_id; 382} 383 384#endif 385 386void ssl_load_ciphers(void) 387{ 388 ssl_cipher_methods[SSL_ENC_DES_IDX] = EVP_get_cipherbyname(SN_des_cbc); 389 ssl_cipher_methods[SSL_ENC_3DES_IDX] = 390 EVP_get_cipherbyname(SN_des_ede3_cbc); 391 ssl_cipher_methods[SSL_ENC_RC4_IDX] = EVP_get_cipherbyname(SN_rc4); 392 ssl_cipher_methods[SSL_ENC_RC2_IDX] = EVP_get_cipherbyname(SN_rc2_cbc); 393#ifndef OPENSSL_NO_IDEA 394 ssl_cipher_methods[SSL_ENC_IDEA_IDX] = EVP_get_cipherbyname(SN_idea_cbc); 395#else 396 ssl_cipher_methods[SSL_ENC_IDEA_IDX] = NULL; 397#endif 398 ssl_cipher_methods[SSL_ENC_AES128_IDX] = 399 EVP_get_cipherbyname(SN_aes_128_cbc); 400 ssl_cipher_methods[SSL_ENC_AES256_IDX] = 401 EVP_get_cipherbyname(SN_aes_256_cbc); 402 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] = 403 EVP_get_cipherbyname(SN_camellia_128_cbc); 404 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] = 405 EVP_get_cipherbyname(SN_camellia_256_cbc); 406 ssl_cipher_methods[SSL_ENC_GOST89_IDX] = 407 EVP_get_cipherbyname(SN_gost89_cnt); 408 ssl_cipher_methods[SSL_ENC_SEED_IDX] = EVP_get_cipherbyname(SN_seed_cbc); 409 410 ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] = 411 EVP_get_cipherbyname(SN_aes_128_gcm); 412 ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] = 413 EVP_get_cipherbyname(SN_aes_256_gcm); 414 415 ssl_digest_methods[SSL_MD_MD5_IDX] = EVP_get_digestbyname(SN_md5); 416 ssl_mac_secret_size[SSL_MD_MD5_IDX] = 417 EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]); 418 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0); 419 ssl_digest_methods[SSL_MD_SHA1_IDX] = EVP_get_digestbyname(SN_sha1); 420 ssl_mac_secret_size[SSL_MD_SHA1_IDX] = 421 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]); 422 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0); 423 ssl_digest_methods[SSL_MD_GOST94_IDX] = 424 EVP_get_digestbyname(SN_id_GostR3411_94); 425 if (ssl_digest_methods[SSL_MD_GOST94_IDX]) { 426 ssl_mac_secret_size[SSL_MD_GOST94_IDX] = 427 EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]); 428 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0); 429 } 430 ssl_digest_methods[SSL_MD_GOST89MAC_IDX] = 431 EVP_get_digestbyname(SN_id_Gost28147_89_MAC); 432 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); 433 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) { 434 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32; 435 } 436 437 ssl_digest_methods[SSL_MD_SHA256_IDX] = EVP_get_digestbyname(SN_sha256); 438 ssl_mac_secret_size[SSL_MD_SHA256_IDX] = 439 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]); 440 ssl_digest_methods[SSL_MD_SHA384_IDX] = EVP_get_digestbyname(SN_sha384); 441 ssl_mac_secret_size[SSL_MD_SHA384_IDX] = 442 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]); 443} 444 445#ifndef OPENSSL_NO_COMP 446 447static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b) 448{ 449 return ((*a)->id - (*b)->id); 450} 451 452static void load_builtin_compressions(void) 453{ 454 int got_write_lock = 0; 455 456 CRYPTO_r_lock(CRYPTO_LOCK_SSL); 457 if (ssl_comp_methods == NULL) { 458 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 459 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 460 got_write_lock = 1; 461 462 if (ssl_comp_methods == NULL) { 463 SSL_COMP *comp = NULL; 464 465 MemCheck_off(); 466 ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp); 467 if (ssl_comp_methods != NULL) { 468 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 469 if (comp != NULL) { 470 comp->method = COMP_zlib(); 471 if (comp->method && comp->method->type == NID_undef) 472 OPENSSL_free(comp); 473 else { 474 comp->id = SSL_COMP_ZLIB_IDX; 475 comp->name = comp->method->name; 476 sk_SSL_COMP_push(ssl_comp_methods, comp); 477 } 478 } 479 sk_SSL_COMP_sort(ssl_comp_methods); 480 } 481 MemCheck_on(); 482 } 483 } 484 485 if (got_write_lock) 486 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 487 else 488 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 489} 490#endif 491 492int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 493 const EVP_MD **md, int *mac_pkey_type, 494 int *mac_secret_size, SSL_COMP **comp) 495{ 496 int i; 497 const SSL_CIPHER *c; 498 499 c = s->cipher; 500 if (c == NULL) 501 return (0); 502 if (comp != NULL) { 503 SSL_COMP ctmp; 504#ifndef OPENSSL_NO_COMP 505 load_builtin_compressions(); 506#endif 507 508 *comp = NULL; 509 ctmp.id = s->compress_meth; 510 if (ssl_comp_methods != NULL) { 511 i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp); 512 if (i >= 0) 513 *comp = sk_SSL_COMP_value(ssl_comp_methods, i); 514 else 515 *comp = NULL; 516 } 517 } 518 519 if ((enc == NULL) || (md == NULL)) 520 return (0); 521 522 switch (c->algorithm_enc) { 523 case SSL_DES: 524 i = SSL_ENC_DES_IDX; 525 break; 526 case SSL_3DES: 527 i = SSL_ENC_3DES_IDX; 528 break; 529 case SSL_RC4: 530 i = SSL_ENC_RC4_IDX; 531 break; 532 case SSL_RC2: 533 i = SSL_ENC_RC2_IDX; 534 break; 535 case SSL_IDEA: 536 i = SSL_ENC_IDEA_IDX; 537 break; 538 case SSL_eNULL: 539 i = SSL_ENC_NULL_IDX; 540 break; 541 case SSL_AES128: 542 i = SSL_ENC_AES128_IDX; 543 break; 544 case SSL_AES256: 545 i = SSL_ENC_AES256_IDX; 546 break; 547 case SSL_CAMELLIA128: 548 i = SSL_ENC_CAMELLIA128_IDX; 549 break; 550 case SSL_CAMELLIA256: 551 i = SSL_ENC_CAMELLIA256_IDX; 552 break; 553 case SSL_eGOST2814789CNT: 554 i = SSL_ENC_GOST89_IDX; 555 break; 556 case SSL_SEED: 557 i = SSL_ENC_SEED_IDX; 558 break; 559 case SSL_AES128GCM: 560 i = SSL_ENC_AES128GCM_IDX; 561 break; 562 case SSL_AES256GCM: 563 i = SSL_ENC_AES256GCM_IDX; 564 break; 565 default: 566 i = -1; 567 break; 568 } 569 570 if ((i < 0) || (i >= SSL_ENC_NUM_IDX)) 571 *enc = NULL; 572 else { 573 if (i == SSL_ENC_NULL_IDX) 574 *enc = EVP_enc_null(); 575 else 576 *enc = ssl_cipher_methods[i]; 577 } 578 579 switch (c->algorithm_mac) { 580 case SSL_MD5: 581 i = SSL_MD_MD5_IDX; 582 break; 583 case SSL_SHA1: 584 i = SSL_MD_SHA1_IDX; 585 break; 586 case SSL_SHA256: 587 i = SSL_MD_SHA256_IDX; 588 break; 589 case SSL_SHA384: 590 i = SSL_MD_SHA384_IDX; 591 break; 592 case SSL_GOST94: 593 i = SSL_MD_GOST94_IDX; 594 break; 595 case SSL_GOST89MAC: 596 i = SSL_MD_GOST89MAC_IDX; 597 break; 598 default: 599 i = -1; 600 break; 601 } 602 if ((i < 0) || (i >= SSL_MD_NUM_IDX)) { 603 *md = NULL; 604 if (mac_pkey_type != NULL) 605 *mac_pkey_type = NID_undef; 606 if (mac_secret_size != NULL) 607 *mac_secret_size = 0; 608 if (c->algorithm_mac == SSL_AEAD) 609 mac_pkey_type = NULL; 610 } else { 611 *md = ssl_digest_methods[i]; 612 if (mac_pkey_type != NULL) 613 *mac_pkey_type = ssl_mac_pkey_id[i]; 614 if (mac_secret_size != NULL) 615 *mac_secret_size = ssl_mac_secret_size[i]; 616 } 617 618 if ((*enc != NULL) && 619 (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER)) 620 && (!mac_pkey_type || *mac_pkey_type != NID_undef)) { 621 const EVP_CIPHER *evp; 622 623 if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR || 624 s->ssl_version < TLS1_VERSION) 625 return 1; 626 627#ifdef OPENSSL_FIPS 628 if (FIPS_mode()) 629 return 1; 630#endif 631 632 if (c->algorithm_enc == SSL_RC4 && 633 c->algorithm_mac == SSL_MD5 && 634 (evp = EVP_get_cipherbyname("RC4-HMAC-MD5"))) 635 *enc = evp, *md = NULL; 636 else if (c->algorithm_enc == SSL_AES128 && 637 c->algorithm_mac == SSL_SHA1 && 638 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1"))) 639 *enc = evp, *md = NULL; 640 else if (c->algorithm_enc == SSL_AES256 && 641 c->algorithm_mac == SSL_SHA1 && 642 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1"))) 643 *enc = evp, *md = NULL; 644 return (1); 645 } else 646 return (0); 647} 648 649int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md) 650{ 651 if (idx < 0 || idx >= SSL_MD_NUM_IDX) { 652 return 0; 653 } 654 *mask = ssl_handshake_digest_flag[idx]; 655 if (*mask) 656 *md = ssl_digest_methods[idx]; 657 else 658 *md = NULL; 659 return 1; 660} 661 662#define ITEM_SEP(a) \ 663 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) 664 665static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, 666 CIPHER_ORDER **tail) 667{ 668 if (curr == *tail) 669 return; 670 if (curr == *head) 671 *head = curr->next; 672 if (curr->prev != NULL) 673 curr->prev->next = curr->next; 674 if (curr->next != NULL) 675 curr->next->prev = curr->prev; 676 (*tail)->next = curr; 677 curr->prev = *tail; 678 curr->next = NULL; 679 *tail = curr; 680} 681 682static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, 683 CIPHER_ORDER **tail) 684{ 685 if (curr == *head) 686 return; 687 if (curr == *tail) 688 *tail = curr->prev; 689 if (curr->next != NULL) 690 curr->next->prev = curr->prev; 691 if (curr->prev != NULL) 692 curr->prev->next = curr->next; 693 (*head)->prev = curr; 694 curr->next = *head; 695 curr->prev = NULL; 696 *head = curr; 697} 698 699static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, 700 unsigned long *enc, unsigned long *mac, 701 unsigned long *ssl) 702{ 703 *mkey = 0; 704 *auth = 0; 705 *enc = 0; 706 *mac = 0; 707 *ssl = 0; 708 709#ifdef OPENSSL_NO_RSA 710 *mkey |= SSL_kRSA; 711 *auth |= SSL_aRSA; 712#endif 713#ifdef OPENSSL_NO_DSA 714 *auth |= SSL_aDSS; 715#endif 716 *mkey |= SSL_kDHr | SSL_kDHd; /* no such ciphersuites supported! */ 717 *auth |= SSL_aDH; 718#ifdef OPENSSL_NO_DH 719 *mkey |= SSL_kDHr | SSL_kDHd | SSL_kEDH; 720 *auth |= SSL_aDH; 721#endif 722#ifdef OPENSSL_NO_KRB5 723 *mkey |= SSL_kKRB5; 724 *auth |= SSL_aKRB5; 725#endif 726#ifdef OPENSSL_NO_ECDSA 727 *auth |= SSL_aECDSA; 728#endif 729#ifdef OPENSSL_NO_ECDH 730 *mkey |= SSL_kECDHe | SSL_kECDHr; 731 *auth |= SSL_aECDH; 732#endif 733#ifdef OPENSSL_NO_PSK 734 *mkey |= SSL_kPSK; 735 *auth |= SSL_aPSK; 736#endif 737#ifdef OPENSSL_NO_SRP 738 *mkey |= SSL_kSRP; 739#endif 740 /* 741 * Check for presence of GOST 34.10 algorithms, and if they do not 742 * present, disable appropriate auth and key exchange 743 */ 744 if (!get_optional_pkey_id("gost94")) { 745 *auth |= SSL_aGOST94; 746 } 747 if (!get_optional_pkey_id("gost2001")) { 748 *auth |= SSL_aGOST01; 749 } 750 /* 751 * Disable GOST key exchange if no GOST signature algs are available * 752 */ 753 if ((*auth & (SSL_aGOST94 | SSL_aGOST01)) == (SSL_aGOST94 | SSL_aGOST01)) { 754 *mkey |= SSL_kGOST; 755 } 756#ifdef SSL_FORBID_ENULL 757 *enc |= SSL_eNULL; 758#endif 759 760 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX] == NULL) ? SSL_DES : 0; 761 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES : 0; 762 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX] == NULL) ? SSL_RC4 : 0; 763 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX] == NULL) ? SSL_RC2 : 0; 764 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA : 0; 765 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128 : 0; 766 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256 : 0; 767 *enc |= 768 (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] == 769 NULL) ? SSL_AES128GCM : 0; 770 *enc |= 771 (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] == 772 NULL) ? SSL_AES256GCM : 0; 773 *enc |= 774 (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == 775 NULL) ? SSL_CAMELLIA128 : 0; 776 *enc |= 777 (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == 778 NULL) ? SSL_CAMELLIA256 : 0; 779 *enc |= 780 (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == 781 NULL) ? SSL_eGOST2814789CNT : 0; 782 *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED : 0; 783 784 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX] == NULL) ? SSL_MD5 : 0; 785 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1 : 0; 786 *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256 : 0; 787 *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384 : 0; 788 *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94 : 0; 789 *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL 790 || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] == 791 NID_undef) ? SSL_GOST89MAC : 0; 792 793} 794 795static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, 796 int num_of_ciphers, 797 unsigned long disabled_mkey, 798 unsigned long disabled_auth, 799 unsigned long disabled_enc, 800 unsigned long disabled_mac, 801 unsigned long disabled_ssl, 802 CIPHER_ORDER *co_list, 803 CIPHER_ORDER **head_p, 804 CIPHER_ORDER **tail_p) 805{ 806 int i, co_list_num; 807 const SSL_CIPHER *c; 808 809 /* 810 * We have num_of_ciphers descriptions compiled in, depending on the 811 * method selected (SSLv2 and/or SSLv3, TLSv1 etc). 812 * These will later be sorted in a linked list with at most num 813 * entries. 814 */ 815 816 /* Get the initial list of ciphers */ 817 co_list_num = 0; /* actual count of ciphers */ 818 for (i = 0; i < num_of_ciphers; i++) { 819 c = ssl_method->get_cipher(i); 820 /* drop those that use any of that is not available */ 821 if ((c != NULL) && c->valid && 822#ifdef OPENSSL_FIPS 823 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) && 824#endif 825 !(c->algorithm_mkey & disabled_mkey) && 826 !(c->algorithm_auth & disabled_auth) && 827 !(c->algorithm_enc & disabled_enc) && 828 !(c->algorithm_mac & disabled_mac) && 829 !(c->algorithm_ssl & disabled_ssl)) { 830 co_list[co_list_num].cipher = c; 831 co_list[co_list_num].next = NULL; 832 co_list[co_list_num].prev = NULL; 833 co_list[co_list_num].active = 0; 834 co_list_num++; 835#ifdef KSSL_DEBUG 836 fprintf(stderr, "\t%d: %s %lx %lx %lx\n", i, c->name, c->id, 837 c->algorithm_mkey, c->algorithm_auth); 838#endif /* KSSL_DEBUG */ 839 /* 840 * if (!sk_push(ca_list,(char *)c)) goto err; 841 */ 842 } 843 } 844 845 /* 846 * Prepare linked list from list entries 847 */ 848 if (co_list_num > 0) { 849 co_list[0].prev = NULL; 850 851 if (co_list_num > 1) { 852 co_list[0].next = &co_list[1]; 853 854 for (i = 1; i < co_list_num - 1; i++) { 855 co_list[i].prev = &co_list[i - 1]; 856 co_list[i].next = &co_list[i + 1]; 857 } 858 859 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; 860 } 861 862 co_list[co_list_num - 1].next = NULL; 863 864 *head_p = &co_list[0]; 865 *tail_p = &co_list[co_list_num - 1]; 866 } 867} 868 869static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, 870 int num_of_group_aliases, 871 unsigned long disabled_mkey, 872 unsigned long disabled_auth, 873 unsigned long disabled_enc, 874 unsigned long disabled_mac, 875 unsigned long disabled_ssl, 876 CIPHER_ORDER *head) 877{ 878 CIPHER_ORDER *ciph_curr; 879 const SSL_CIPHER **ca_curr; 880 int i; 881 unsigned long mask_mkey = ~disabled_mkey; 882 unsigned long mask_auth = ~disabled_auth; 883 unsigned long mask_enc = ~disabled_enc; 884 unsigned long mask_mac = ~disabled_mac; 885 unsigned long mask_ssl = ~disabled_ssl; 886 887 /* 888 * First, add the real ciphers as already collected 889 */ 890 ciph_curr = head; 891 ca_curr = ca_list; 892 while (ciph_curr != NULL) { 893 *ca_curr = ciph_curr->cipher; 894 ca_curr++; 895 ciph_curr = ciph_curr->next; 896 } 897 898 /* 899 * Now we add the available ones from the cipher_aliases[] table. 900 * They represent either one or more algorithms, some of which 901 * in any affected category must be supported (set in enabled_mask), 902 * or represent a cipher strength value (will be added in any case because algorithms=0). 903 */ 904 for (i = 0; i < num_of_group_aliases; i++) { 905 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey; 906 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth; 907 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc; 908 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac; 909 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl; 910 911 if (algorithm_mkey) 912 if ((algorithm_mkey & mask_mkey) == 0) 913 continue; 914 915 if (algorithm_auth) 916 if ((algorithm_auth & mask_auth) == 0) 917 continue; 918 919 if (algorithm_enc) 920 if ((algorithm_enc & mask_enc) == 0) 921 continue; 922 923 if (algorithm_mac) 924 if ((algorithm_mac & mask_mac) == 0) 925 continue; 926 927 if (algorithm_ssl) 928 if ((algorithm_ssl & mask_ssl) == 0) 929 continue; 930 931 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); 932 ca_curr++; 933 } 934 935 *ca_curr = NULL; /* end of list */ 936} 937 938static void ssl_cipher_apply_rule(unsigned long cipher_id, 939 unsigned long alg_mkey, 940 unsigned long alg_auth, 941 unsigned long alg_enc, 942 unsigned long alg_mac, 943 unsigned long alg_ssl, 944 unsigned long algo_strength, int rule, 945 int strength_bits, CIPHER_ORDER **head_p, 946 CIPHER_ORDER **tail_p) 947{ 948 CIPHER_ORDER *head, *tail, *curr, *next, *last; 949 const SSL_CIPHER *cp; 950 int reverse = 0; 951 952#ifdef CIPHER_DEBUG 953 fprintf(stderr, 954 "Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n", 955 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, 956 algo_strength, strength_bits); 957#endif 958 959 if (rule == CIPHER_DEL) 960 reverse = 1; /* needed to maintain sorting between 961 * currently deleted ciphers */ 962 963 head = *head_p; 964 tail = *tail_p; 965 966 if (reverse) { 967 next = tail; 968 last = head; 969 } else { 970 next = head; 971 last = tail; 972 } 973 974 curr = NULL; 975 for (;;) { 976 if (curr == last) 977 break; 978 979 curr = next; 980 981 if (curr == NULL) 982 break; 983 984 next = reverse ? curr->prev : curr->next; 985 986 cp = curr->cipher; 987 988 /* 989 * Selection criteria is either the value of strength_bits 990 * or the algorithms used. 991 */ 992 if (strength_bits >= 0) { 993 if (strength_bits != cp->strength_bits) 994 continue; 995 } else { 996#ifdef CIPHER_DEBUG 997 fprintf(stderr, 998 "\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n", 999 cp->name, cp->algorithm_mkey, cp->algorithm_auth, 1000 cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl, 1001 cp->algo_strength); 1002#endif 1003 if (algo_strength == SSL_EXP_MASK && SSL_C_IS_EXPORT(cp)) 1004 goto ok; 1005 if (alg_ssl == ~SSL_SSLV2 && cp->algorithm_ssl == SSL_SSLV2) 1006 goto ok; 1007 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) 1008 continue; 1009 if (alg_auth && !(alg_auth & cp->algorithm_auth)) 1010 continue; 1011 if (alg_enc && !(alg_enc & cp->algorithm_enc)) 1012 continue; 1013 if (alg_mac && !(alg_mac & cp->algorithm_mac)) 1014 continue; 1015 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl)) 1016 continue; 1017 if ((algo_strength & SSL_EXP_MASK) 1018 && !(algo_strength & SSL_EXP_MASK & cp->algo_strength)) 1019 continue; 1020 if ((algo_strength & SSL_STRONG_MASK) 1021 && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) 1022 continue; 1023 } 1024 1025 ok: 1026 1027#ifdef CIPHER_DEBUG 1028 fprintf(stderr, "Action = %d\n", rule); 1029#endif 1030 1031 /* add the cipher if it has not been added yet. */ 1032 if (rule == CIPHER_ADD) { 1033 /* reverse == 0 */ 1034 if (!curr->active) { 1035 ll_append_tail(&head, curr, &tail); 1036 curr->active = 1; 1037 } 1038 } 1039 /* Move the added cipher to this location */ 1040 else if (rule == CIPHER_ORD) { 1041 /* reverse == 0 */ 1042 if (curr->active) { 1043 ll_append_tail(&head, curr, &tail); 1044 } 1045 } else if (rule == CIPHER_DEL) { 1046 /* reverse == 1 */ 1047 if (curr->active) { 1048 /* 1049 * most recently deleted ciphersuites get best positions for 1050 * any future CIPHER_ADD (note that the CIPHER_DEL loop works 1051 * in reverse to maintain the order) 1052 */ 1053 ll_append_head(&head, curr, &tail); 1054 curr->active = 0; 1055 } 1056 } else if (rule == CIPHER_KILL) { 1057 /* reverse == 0 */ 1058 if (head == curr) 1059 head = curr->next; 1060 else 1061 curr->prev->next = curr->next; 1062 if (tail == curr) 1063 tail = curr->prev; 1064 curr->active = 0; 1065 if (curr->next != NULL) 1066 curr->next->prev = curr->prev; 1067 if (curr->prev != NULL) 1068 curr->prev->next = curr->next; 1069 curr->next = NULL; 1070 curr->prev = NULL; 1071 } 1072 } 1073 1074 *head_p = head; 1075 *tail_p = tail; 1076} 1077 1078static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, 1079 CIPHER_ORDER **tail_p) 1080{ 1081 int max_strength_bits, i, *number_uses; 1082 CIPHER_ORDER *curr; 1083 1084 /* 1085 * This routine sorts the ciphers with descending strength. The sorting 1086 * must keep the pre-sorted sequence, so we apply the normal sorting 1087 * routine as '+' movement to the end of the list. 1088 */ 1089 max_strength_bits = 0; 1090 curr = *head_p; 1091 while (curr != NULL) { 1092 if (curr->active && (curr->cipher->strength_bits > max_strength_bits)) 1093 max_strength_bits = curr->cipher->strength_bits; 1094 curr = curr->next; 1095 } 1096 1097 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 1098 if (!number_uses) { 1099 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE); 1100 return (0); 1101 } 1102 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 1103 1104 /* 1105 * Now find the strength_bits values actually used 1106 */ 1107 curr = *head_p; 1108 while (curr != NULL) { 1109 if (curr->active) 1110 number_uses[curr->cipher->strength_bits]++; 1111 curr = curr->next; 1112 } 1113 /* 1114 * Go through the list of used strength_bits values in descending 1115 * order. 1116 */ 1117 for (i = max_strength_bits; i >= 0; i--) 1118 if (number_uses[i] > 0) 1119 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, 1120 tail_p); 1121 1122 OPENSSL_free(number_uses); 1123 return (1); 1124} 1125 1126static int ssl_cipher_process_rulestr(const char *rule_str, 1127 CIPHER_ORDER **head_p, 1128 CIPHER_ORDER **tail_p, 1129 const SSL_CIPHER **ca_list) 1130{ 1131 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, 1132 algo_strength; 1133 const char *l, *buf; 1134 int j, multi, found, rule, retval, ok, buflen; 1135 unsigned long cipher_id = 0; 1136 char ch; 1137 1138 retval = 1; 1139 l = rule_str; 1140 for (;;) { 1141 ch = *l; 1142 1143 if (ch == '\0') 1144 break; /* done */ 1145 if (ch == '-') { 1146 rule = CIPHER_DEL; 1147 l++; 1148 } else if (ch == '+') { 1149 rule = CIPHER_ORD; 1150 l++; 1151 } else if (ch == '!') { 1152 rule = CIPHER_KILL; 1153 l++; 1154 } else if (ch == '@') { 1155 rule = CIPHER_SPECIAL; 1156 l++; 1157 } else { 1158 rule = CIPHER_ADD; 1159 } 1160 1161 if (ITEM_SEP(ch)) { 1162 l++; 1163 continue; 1164 } 1165 1166 alg_mkey = 0; 1167 alg_auth = 0; 1168 alg_enc = 0; 1169 alg_mac = 0; 1170 alg_ssl = 0; 1171 algo_strength = 0; 1172 1173 for (;;) { 1174 ch = *l; 1175 buf = l; 1176 buflen = 0; 1177#ifndef CHARSET_EBCDIC 1178 while (((ch >= 'A') && (ch <= 'Z')) || 1179 ((ch >= '0') && (ch <= '9')) || 1180 ((ch >= 'a') && (ch <= 'z')) || (ch == '-') || (ch == '.')) 1181#else 1182 while (isalnum(ch) || (ch == '-') || (ch == '.')) 1183#endif 1184 { 1185 ch = *(++l); 1186 buflen++; 1187 } 1188 1189 if (buflen == 0) { 1190 /* 1191 * We hit something we cannot deal with, 1192 * it is no command or separator nor 1193 * alphanumeric, so we call this an error. 1194 */ 1195 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1196 SSL_R_INVALID_COMMAND); 1197 retval = found = 0; 1198 l++; 1199 break; 1200 } 1201 1202 if (rule == CIPHER_SPECIAL) { 1203 found = 0; /* unused -- avoid compiler warning */ 1204 break; /* special treatment */ 1205 } 1206 1207 /* check for multi-part specification */ 1208 if (ch == '+') { 1209 multi = 1; 1210 l++; 1211 } else 1212 multi = 0; 1213 1214 /* 1215 * Now search for the cipher alias in the ca_list. Be careful 1216 * with the strncmp, because the "buflen" limitation 1217 * will make the rule "ADH:SOME" and the cipher 1218 * "ADH-MY-CIPHER" look like a match for buflen=3. 1219 * So additionally check whether the cipher name found 1220 * has the correct length. We can save a strlen() call: 1221 * just checking for the '\0' at the right place is 1222 * sufficient, we have to strncmp() anyway. (We cannot 1223 * use strcmp(), because buf is not '\0' terminated.) 1224 */ 1225 j = found = 0; 1226 cipher_id = 0; 1227 while (ca_list[j]) { 1228 if (!strncmp(buf, ca_list[j]->name, buflen) && 1229 (ca_list[j]->name[buflen] == '\0')) { 1230 found = 1; 1231 break; 1232 } else 1233 j++; 1234 } 1235 1236 if (!found) 1237 break; /* ignore this entry */ 1238 1239 if (ca_list[j]->algorithm_mkey) { 1240 if (alg_mkey) { 1241 alg_mkey &= ca_list[j]->algorithm_mkey; 1242 if (!alg_mkey) { 1243 found = 0; 1244 break; 1245 } 1246 } else 1247 alg_mkey = ca_list[j]->algorithm_mkey; 1248 } 1249 1250 if (ca_list[j]->algorithm_auth) { 1251 if (alg_auth) { 1252 alg_auth &= ca_list[j]->algorithm_auth; 1253 if (!alg_auth) { 1254 found = 0; 1255 break; 1256 } 1257 } else 1258 alg_auth = ca_list[j]->algorithm_auth; 1259 } 1260 1261 if (ca_list[j]->algorithm_enc) { 1262 if (alg_enc) { 1263 alg_enc &= ca_list[j]->algorithm_enc; 1264 if (!alg_enc) { 1265 found = 0; 1266 break; 1267 } 1268 } else 1269 alg_enc = ca_list[j]->algorithm_enc; 1270 } 1271 1272 if (ca_list[j]->algorithm_mac) { 1273 if (alg_mac) { 1274 alg_mac &= ca_list[j]->algorithm_mac; 1275 if (!alg_mac) { 1276 found = 0; 1277 break; 1278 } 1279 } else 1280 alg_mac = ca_list[j]->algorithm_mac; 1281 } 1282 1283 if (ca_list[j]->algo_strength & SSL_EXP_MASK) { 1284 if (algo_strength & SSL_EXP_MASK) { 1285 algo_strength &= 1286 (ca_list[j]->algo_strength & SSL_EXP_MASK) | 1287 ~SSL_EXP_MASK; 1288 if (!(algo_strength & SSL_EXP_MASK)) { 1289 found = 0; 1290 break; 1291 } 1292 } else 1293 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; 1294 } 1295 1296 if (ca_list[j]->algo_strength & SSL_STRONG_MASK) { 1297 if (algo_strength & SSL_STRONG_MASK) { 1298 algo_strength &= 1299 (ca_list[j]->algo_strength & SSL_STRONG_MASK) | 1300 ~SSL_STRONG_MASK; 1301 if (!(algo_strength & SSL_STRONG_MASK)) { 1302 found = 0; 1303 break; 1304 } 1305 } else 1306 algo_strength |= 1307 ca_list[j]->algo_strength & SSL_STRONG_MASK; 1308 } 1309 1310 if (ca_list[j]->valid) { 1311 /* 1312 * explicit ciphersuite found; its protocol version does not 1313 * become part of the search pattern! 1314 */ 1315 1316 cipher_id = ca_list[j]->id; 1317 } else { 1318 /* 1319 * not an explicit ciphersuite; only in this case, the 1320 * protocol version is considered part of the search pattern 1321 */ 1322 1323 if (ca_list[j]->algorithm_ssl) { 1324 if (alg_ssl) { 1325 alg_ssl &= ca_list[j]->algorithm_ssl; 1326 if (!alg_ssl) { 1327 found = 0; 1328 break; 1329 } 1330 } else 1331 alg_ssl = ca_list[j]->algorithm_ssl; 1332 } 1333 } 1334 1335 if (!multi) 1336 break; 1337 } 1338 1339 /* 1340 * Ok, we have the rule, now apply it 1341 */ 1342 if (rule == CIPHER_SPECIAL) { /* special command */ 1343 ok = 0; 1344 if ((buflen == 8) && !strncmp(buf, "STRENGTH", 8)) 1345 ok = ssl_cipher_strength_sort(head_p, tail_p); 1346 else 1347 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1348 SSL_R_INVALID_COMMAND); 1349 if (ok == 0) 1350 retval = 0; 1351 /* 1352 * We do not support any "multi" options 1353 * together with "@", so throw away the 1354 * rest of the command, if any left, until 1355 * end or ':' is found. 1356 */ 1357 while ((*l != '\0') && !ITEM_SEP(*l)) 1358 l++; 1359 } else if (found) { 1360 ssl_cipher_apply_rule(cipher_id, 1361 alg_mkey, alg_auth, alg_enc, alg_mac, 1362 alg_ssl, algo_strength, rule, -1, head_p, 1363 tail_p); 1364 } else { 1365 while ((*l != '\0') && !ITEM_SEP(*l)) 1366 l++; 1367 } 1368 if (*l == '\0') 1369 break; /* done */ 1370 } 1371 1372 return (retval); 1373} 1374 1375STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER) 1376 **cipher_list, STACK_OF(SSL_CIPHER) 1377 **cipher_list_by_id, 1378 const char *rule_str) 1379{ 1380 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 1381 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, 1382 disabled_ssl; 1383 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 1384 const char *rule_p; 1385 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 1386 const SSL_CIPHER **ca_list = NULL; 1387 1388 /* 1389 * Return with error if nothing to do. 1390 */ 1391 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 1392 return NULL; 1393 1394 /* 1395 * To reduce the work to do we only want to process the compiled 1396 * in algorithms, so we first get the mask of disabled ciphers. 1397 */ 1398 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, 1399 &disabled_mac, &disabled_ssl); 1400 1401 /* 1402 * Now we have to collect the available ciphers from the compiled 1403 * in ciphers. We cannot get more than the number compiled in, so 1404 * it is used for allocation. 1405 */ 1406 num_of_ciphers = ssl_method->num_ciphers(); 1407#ifdef KSSL_DEBUG 1408 fprintf(stderr, "ssl_create_cipher_list() for %d ciphers\n", 1409 num_of_ciphers); 1410#endif /* KSSL_DEBUG */ 1411 co_list = 1412 (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 1413 if (co_list == NULL) { 1414 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1415 return (NULL); /* Failure */ 1416 } 1417 1418 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, 1419 disabled_mkey, disabled_auth, disabled_enc, 1420 disabled_mac, disabled_ssl, co_list, &head, 1421 &tail); 1422 1423 /* Now arrange all ciphers by preference: */ 1424 1425 /* 1426 * Everything else being equal, prefer ephemeral ECDH over other key 1427 * exchange mechanisms 1428 */ 1429 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, 1430 &tail); 1431 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, 1432 &tail); 1433 1434 /* AES is our preferred symmetric cipher */ 1435 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, 1436 &tail); 1437 1438 /* Temporarily enable everything else for sorting */ 1439 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1440 1441 /* Low priority for MD5 */ 1442 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, 1443 &tail); 1444 1445 /* 1446 * Move anonymous ciphers to the end. Usually, these will remain 1447 * disabled. (For applications that allow them, they aren't too bad, but 1448 * we prefer authenticated ciphers.) 1449 */ 1450 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, 1451 &tail); 1452 1453 /* Move ciphers without forward secrecy to the end */ 1454 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, 1455 &tail); 1456 /* 1457 * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, 1458 * &head, &tail); 1459 */ 1460 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, 1461 &tail); 1462 ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, 1463 &tail); 1464 ssl_cipher_apply_rule(0, SSL_kKRB5, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, 1465 &tail); 1466 1467 /* RC4 is sort-of broken -- move the the end */ 1468 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, 1469 &tail); 1470 1471 /* 1472 * Now sort by symmetric encryption strength. The above ordering remains 1473 * in force within each class 1474 */ 1475 if (!ssl_cipher_strength_sort(&head, &tail)) { 1476 OPENSSL_free(co_list); 1477 return NULL; 1478 } 1479 1480 /* Now disable everything (maintaining the ordering!) */ 1481 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1482 1483 /* 1484 * We also need cipher aliases for selecting based on the rule_str. 1485 * There might be two types of entries in the rule_str: 1) names 1486 * of ciphers themselves 2) aliases for groups of ciphers. 1487 * For 1) we need the available ciphers and for 2) the cipher 1488 * groups of cipher_aliases added together in one list (otherwise 1489 * we would be happy with just the cipher_aliases table). 1490 */ 1491 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 1492 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 1493 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); 1494 if (ca_list == NULL) { 1495 OPENSSL_free(co_list); 1496 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1497 return (NULL); /* Failure */ 1498 } 1499 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, 1500 disabled_mkey, disabled_auth, disabled_enc, 1501 disabled_mac, disabled_ssl, head); 1502 1503 /* 1504 * If the rule_string begins with DEFAULT, apply the default rule 1505 * before using the (possibly available) additional rules. 1506 */ 1507 ok = 1; 1508 rule_p = rule_str; 1509 if (strncmp(rule_str, "DEFAULT", 7) == 0) { 1510 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 1511 &head, &tail, ca_list); 1512 rule_p += 7; 1513 if (*rule_p == ':') 1514 rule_p++; 1515 } 1516 1517 if (ok && (strlen(rule_p) > 0)) 1518 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list); 1519 1520 OPENSSL_free((void *)ca_list); /* Not needed anymore */ 1521 1522 if (!ok) { /* Rule processing failure */ 1523 OPENSSL_free(co_list); 1524 return (NULL); 1525 } 1526 1527 /* 1528 * Allocate new "cipherstack" for the result, return with error 1529 * if we cannot get one. 1530 */ 1531 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) { 1532 OPENSSL_free(co_list); 1533 return (NULL); 1534 } 1535 1536 /* 1537 * The cipher selection for the list is done. The ciphers are added 1538 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1539 */ 1540 for (curr = head; curr != NULL; curr = curr->next) { 1541#ifdef OPENSSL_FIPS 1542 if (curr->active 1543 && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) 1544#else 1545 if (curr->active) 1546#endif 1547 { 1548 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1549#ifdef CIPHER_DEBUG 1550 fprintf(stderr, "<%s>\n", curr->cipher->name); 1551#endif 1552 } 1553 } 1554 OPENSSL_free(co_list); /* Not needed any longer */ 1555 1556 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1557 if (tmp_cipher_list == NULL) { 1558 sk_SSL_CIPHER_free(cipherstack); 1559 return NULL; 1560 } 1561 if (*cipher_list != NULL) 1562 sk_SSL_CIPHER_free(*cipher_list); 1563 *cipher_list = cipherstack; 1564 if (*cipher_list_by_id != NULL) 1565 sk_SSL_CIPHER_free(*cipher_list_by_id); 1566 *cipher_list_by_id = tmp_cipher_list; 1567 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id, 1568 ssl_cipher_ptr_id_cmp); 1569 1570 sk_SSL_CIPHER_sort(*cipher_list_by_id); 1571 return (cipherstack); 1572} 1573 1574char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) 1575{ 1576 int is_export, pkl, kl; 1577 const char *ver, *exp_str; 1578 const char *kx, *au, *enc, *mac; 1579 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, alg2; 1580#ifdef KSSL_DEBUG 1581 static const char *format = 1582 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n"; 1583#else 1584 static const char *format = 1585 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1586#endif /* KSSL_DEBUG */ 1587 1588 alg_mkey = cipher->algorithm_mkey; 1589 alg_auth = cipher->algorithm_auth; 1590 alg_enc = cipher->algorithm_enc; 1591 alg_mac = cipher->algorithm_mac; 1592 alg_ssl = cipher->algorithm_ssl; 1593 1594 alg2 = cipher->algorithm2; 1595 1596 is_export = SSL_C_IS_EXPORT(cipher); 1597 pkl = SSL_C_EXPORT_PKEYLENGTH(cipher); 1598 kl = SSL_C_EXPORT_KEYLENGTH(cipher); 1599 exp_str = is_export ? " export" : ""; 1600 1601 if (alg_ssl & SSL_SSLV2) 1602 ver = "SSLv2"; 1603 else if (alg_ssl & SSL_SSLV3) 1604 ver = "SSLv3"; 1605 else if (alg_ssl & SSL_TLSV1_2) 1606 ver = "TLSv1.2"; 1607 else 1608 ver = "unknown"; 1609 1610 switch (alg_mkey) { 1611 case SSL_kRSA: 1612 kx = is_export ? (pkl == 512 ? "RSA(512)" : "RSA(1024)") : "RSA"; 1613 break; 1614 case SSL_kDHr: 1615 kx = "DH/RSA"; 1616 break; 1617 case SSL_kDHd: 1618 kx = "DH/DSS"; 1619 break; 1620 case SSL_kKRB5: 1621 kx = "KRB5"; 1622 break; 1623 case SSL_kEDH: 1624 kx = is_export ? (pkl == 512 ? "DH(512)" : "DH(1024)") : "DH"; 1625 break; 1626 case SSL_kECDHr: 1627 kx = "ECDH/RSA"; 1628 break; 1629 case SSL_kECDHe: 1630 kx = "ECDH/ECDSA"; 1631 break; 1632 case SSL_kEECDH: 1633 kx = "ECDH"; 1634 break; 1635 case SSL_kPSK: 1636 kx = "PSK"; 1637 break; 1638 case SSL_kSRP: 1639 kx = "SRP"; 1640 break; 1641 case SSL_kGOST: 1642 kx = "GOST"; 1643 break; 1644 default: 1645 kx = "unknown"; 1646 } 1647 1648 switch (alg_auth) { 1649 case SSL_aRSA: 1650 au = "RSA"; 1651 break; 1652 case SSL_aDSS: 1653 au = "DSS"; 1654 break; 1655 case SSL_aDH: 1656 au = "DH"; 1657 break; 1658 case SSL_aKRB5: 1659 au = "KRB5"; 1660 break; 1661 case SSL_aECDH: 1662 au = "ECDH"; 1663 break; 1664 case SSL_aNULL: 1665 au = "None"; 1666 break; 1667 case SSL_aECDSA: 1668 au = "ECDSA"; 1669 break; 1670 case SSL_aPSK: 1671 au = "PSK"; 1672 break; 1673 case SSL_aSRP: 1674 au = "SRP"; 1675 break; 1676 case SSL_aGOST94: 1677 au = "GOST94"; 1678 break; 1679 case SSL_aGOST01: 1680 au = "GOST01"; 1681 break; 1682 default: 1683 au = "unknown"; 1684 break; 1685 } 1686 1687 switch (alg_enc) { 1688 case SSL_DES: 1689 enc = (is_export && kl == 5) ? "DES(40)" : "DES(56)"; 1690 break; 1691 case SSL_3DES: 1692 enc = "3DES(168)"; 1693 break; 1694 case SSL_RC4: 1695 enc = is_export ? (kl == 5 ? "RC4(40)" : "RC4(56)") 1696 : ((alg2 & SSL2_CF_8_BYTE_ENC) ? "RC4(64)" : "RC4(128)"); 1697 break; 1698 case SSL_RC2: 1699 enc = is_export ? (kl == 5 ? "RC2(40)" : "RC2(56)") : "RC2(128)"; 1700 break; 1701 case SSL_IDEA: 1702 enc = "IDEA(128)"; 1703 break; 1704 case SSL_eNULL: 1705 enc = "None"; 1706 break; 1707 case SSL_AES128: 1708 enc = "AES(128)"; 1709 break; 1710 case SSL_AES256: 1711 enc = "AES(256)"; 1712 break; 1713 case SSL_AES128GCM: 1714 enc = "AESGCM(128)"; 1715 break; 1716 case SSL_AES256GCM: 1717 enc = "AESGCM(256)"; 1718 break; 1719 case SSL_CAMELLIA128: 1720 enc = "Camellia(128)"; 1721 break; 1722 case SSL_CAMELLIA256: 1723 enc = "Camellia(256)"; 1724 break; 1725 case SSL_SEED: 1726 enc = "SEED(128)"; 1727 break; 1728 case SSL_eGOST2814789CNT: 1729 enc = "GOST89(256)"; 1730 break; 1731 default: 1732 enc = "unknown"; 1733 break; 1734 } 1735 1736 switch (alg_mac) { 1737 case SSL_MD5: 1738 mac = "MD5"; 1739 break; 1740 case SSL_SHA1: 1741 mac = "SHA1"; 1742 break; 1743 case SSL_SHA256: 1744 mac = "SHA256"; 1745 break; 1746 case SSL_SHA384: 1747 mac = "SHA384"; 1748 break; 1749 case SSL_AEAD: 1750 mac = "AEAD"; 1751 break; 1752 case SSL_GOST89MAC: 1753 mac = "GOST89"; 1754 break; 1755 case SSL_GOST94: 1756 mac = "GOST94"; 1757 break; 1758 default: 1759 mac = "unknown"; 1760 break; 1761 } 1762 1763 if (buf == NULL) { 1764 len = 128; 1765 buf = OPENSSL_malloc(len); 1766 if (buf == NULL) 1767 return ("OPENSSL_malloc Error"); 1768 } else if (len < 128) 1769 return ("Buffer too small"); 1770 1771#ifdef KSSL_DEBUG 1772 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac, 1773 exp_str, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl); 1774#else 1775 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac, 1776 exp_str); 1777#endif /* KSSL_DEBUG */ 1778 return (buf); 1779} 1780 1781char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1782{ 1783 int i; 1784 1785 if (c == NULL) 1786 return ("(NONE)"); 1787 i = (int)(c->id >> 24L); 1788 if (i == 3) 1789 return ("TLSv1/SSLv3"); 1790 else if (i == 2) 1791 return ("SSLv2"); 1792 else 1793 return ("unknown"); 1794} 1795 1796/* return the actual cipher being used */ 1797const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1798{ 1799 if (c != NULL) 1800 return (c->name); 1801 return ("(NONE)"); 1802} 1803 1804/* number of bits for symmetric cipher */ 1805int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1806{ 1807 int ret = 0; 1808 1809 if (c != NULL) { 1810 if (alg_bits != NULL) 1811 *alg_bits = c->alg_bits; 1812 ret = c->strength_bits; 1813 } 1814 return (ret); 1815} 1816 1817unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c) 1818{ 1819 return c->id; 1820} 1821 1822SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1823{ 1824 SSL_COMP *ctmp; 1825 int i, nn; 1826 1827 if ((n == 0) || (sk == NULL)) 1828 return (NULL); 1829 nn = sk_SSL_COMP_num(sk); 1830 for (i = 0; i < nn; i++) { 1831 ctmp = sk_SSL_COMP_value(sk, i); 1832 if (ctmp->id == n) 1833 return (ctmp); 1834 } 1835 return (NULL); 1836} 1837 1838#ifdef OPENSSL_NO_COMP 1839void *SSL_COMP_get_compression_methods(void) 1840{ 1841 return NULL; 1842} 1843 1844int SSL_COMP_add_compression_method(int id, void *cm) 1845{ 1846 return 1; 1847} 1848 1849const char *SSL_COMP_get_name(const void *comp) 1850{ 1851 return NULL; 1852} 1853#else 1854STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1855{ 1856 load_builtin_compressions(); 1857 return (ssl_comp_methods); 1858} 1859 1860int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1861{ 1862 SSL_COMP *comp; 1863 1864 if (cm == NULL || cm->type == NID_undef) 1865 return 1; 1866 1867 /*- 1868 * According to draft-ietf-tls-compression-04.txt, the 1869 * compression number ranges should be the following: 1870 * 1871 * 0 to 63: methods defined by the IETF 1872 * 64 to 192: external party methods assigned by IANA 1873 * 193 to 255: reserved for private use 1874 */ 1875 if (id < 193 || id > 255) { 1876 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, 1877 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1878 return 0; 1879 } 1880 1881 MemCheck_off(); 1882 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1883 comp->id = id; 1884 comp->method = cm; 1885 load_builtin_compressions(); 1886 if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) { 1887 OPENSSL_free(comp); 1888 MemCheck_on(); 1889 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, 1890 SSL_R_DUPLICATE_COMPRESSION_ID); 1891 return (1); 1892 } else if ((ssl_comp_methods == NULL) 1893 || !sk_SSL_COMP_push(ssl_comp_methods, comp)) { 1894 OPENSSL_free(comp); 1895 MemCheck_on(); 1896 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE); 1897 return (1); 1898 } else { 1899 MemCheck_on(); 1900 return (0); 1901 } 1902} 1903 1904const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1905{ 1906 if (comp) 1907 return comp->name; 1908 return NULL; 1909} 1910 1911#endif 1912