ssl_ciph.c revision 296341
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) { 360 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth); 361 } 362 return pkey_id; 363} 364 365#else 366 367static int get_optional_pkey_id(const char *pkey_name) 368{ 369 const EVP_PKEY_ASN1_METHOD *ameth; 370 ENGINE *tmpeng = NULL; 371 int pkey_id = 0; 372 ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1); 373 if (ameth) { 374 EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth); 375 } 376 if (tmpeng) 377 ENGINE_finish(tmpeng); 378 return pkey_id; 379} 380 381#endif 382 383void ssl_load_ciphers(void) 384{ 385 ssl_cipher_methods[SSL_ENC_DES_IDX] = EVP_get_cipherbyname(SN_des_cbc); 386 ssl_cipher_methods[SSL_ENC_3DES_IDX] = 387 EVP_get_cipherbyname(SN_des_ede3_cbc); 388 ssl_cipher_methods[SSL_ENC_RC4_IDX] = EVP_get_cipherbyname(SN_rc4); 389 ssl_cipher_methods[SSL_ENC_RC2_IDX] = EVP_get_cipherbyname(SN_rc2_cbc); 390#ifndef OPENSSL_NO_IDEA 391 ssl_cipher_methods[SSL_ENC_IDEA_IDX] = EVP_get_cipherbyname(SN_idea_cbc); 392#else 393 ssl_cipher_methods[SSL_ENC_IDEA_IDX] = NULL; 394#endif 395 ssl_cipher_methods[SSL_ENC_AES128_IDX] = 396 EVP_get_cipherbyname(SN_aes_128_cbc); 397 ssl_cipher_methods[SSL_ENC_AES256_IDX] = 398 EVP_get_cipherbyname(SN_aes_256_cbc); 399 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] = 400 EVP_get_cipherbyname(SN_camellia_128_cbc); 401 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] = 402 EVP_get_cipherbyname(SN_camellia_256_cbc); 403 ssl_cipher_methods[SSL_ENC_GOST89_IDX] = 404 EVP_get_cipherbyname(SN_gost89_cnt); 405 ssl_cipher_methods[SSL_ENC_SEED_IDX] = EVP_get_cipherbyname(SN_seed_cbc); 406 407 ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] = 408 EVP_get_cipherbyname(SN_aes_128_gcm); 409 ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] = 410 EVP_get_cipherbyname(SN_aes_256_gcm); 411 412 ssl_digest_methods[SSL_MD_MD5_IDX] = EVP_get_digestbyname(SN_md5); 413 ssl_mac_secret_size[SSL_MD_MD5_IDX] = 414 EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]); 415 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0); 416 ssl_digest_methods[SSL_MD_SHA1_IDX] = EVP_get_digestbyname(SN_sha1); 417 ssl_mac_secret_size[SSL_MD_SHA1_IDX] = 418 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]); 419 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0); 420 ssl_digest_methods[SSL_MD_GOST94_IDX] = 421 EVP_get_digestbyname(SN_id_GostR3411_94); 422 if (ssl_digest_methods[SSL_MD_GOST94_IDX]) { 423 ssl_mac_secret_size[SSL_MD_GOST94_IDX] = 424 EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]); 425 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0); 426 } 427 ssl_digest_methods[SSL_MD_GOST89MAC_IDX] = 428 EVP_get_digestbyname(SN_id_Gost28147_89_MAC); 429 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); 430 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) { 431 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX] = 32; 432 } 433 434 ssl_digest_methods[SSL_MD_SHA256_IDX] = EVP_get_digestbyname(SN_sha256); 435 ssl_mac_secret_size[SSL_MD_SHA256_IDX] = 436 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]); 437 ssl_digest_methods[SSL_MD_SHA384_IDX] = EVP_get_digestbyname(SN_sha384); 438 ssl_mac_secret_size[SSL_MD_SHA384_IDX] = 439 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]); 440} 441 442#ifndef OPENSSL_NO_COMP 443 444static int sk_comp_cmp(const SSL_COMP *const *a, const SSL_COMP *const *b) 445{ 446 return ((*a)->id - (*b)->id); 447} 448 449static void load_builtin_compressions(void) 450{ 451 int got_write_lock = 0; 452 453 CRYPTO_r_lock(CRYPTO_LOCK_SSL); 454 if (ssl_comp_methods == NULL) { 455 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 456 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 457 got_write_lock = 1; 458 459 if (ssl_comp_methods == NULL) { 460 SSL_COMP *comp = NULL; 461 462 MemCheck_off(); 463 ssl_comp_methods = sk_SSL_COMP_new(sk_comp_cmp); 464 if (ssl_comp_methods != NULL) { 465 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 466 if (comp != NULL) { 467 comp->method = COMP_zlib(); 468 if (comp->method && comp->method->type == NID_undef) 469 OPENSSL_free(comp); 470 else { 471 comp->id = SSL_COMP_ZLIB_IDX; 472 comp->name = comp->method->name; 473 sk_SSL_COMP_push(ssl_comp_methods, comp); 474 } 475 } 476 sk_SSL_COMP_sort(ssl_comp_methods); 477 } 478 MemCheck_on(); 479 } 480 } 481 482 if (got_write_lock) 483 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 484 else 485 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 486} 487#endif 488 489int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 490 const EVP_MD **md, int *mac_pkey_type, 491 int *mac_secret_size, SSL_COMP **comp) 492{ 493 int i; 494 const SSL_CIPHER *c; 495 496 c = s->cipher; 497 if (c == NULL) 498 return (0); 499 if (comp != NULL) { 500 SSL_COMP ctmp; 501#ifndef OPENSSL_NO_COMP 502 load_builtin_compressions(); 503#endif 504 505 *comp = NULL; 506 ctmp.id = s->compress_meth; 507 if (ssl_comp_methods != NULL) { 508 i = sk_SSL_COMP_find(ssl_comp_methods, &ctmp); 509 if (i >= 0) 510 *comp = sk_SSL_COMP_value(ssl_comp_methods, i); 511 else 512 *comp = NULL; 513 } 514 } 515 516 if ((enc == NULL) || (md == NULL)) 517 return (0); 518 519 switch (c->algorithm_enc) { 520 case SSL_DES: 521 i = SSL_ENC_DES_IDX; 522 break; 523 case SSL_3DES: 524 i = SSL_ENC_3DES_IDX; 525 break; 526 case SSL_RC4: 527 i = SSL_ENC_RC4_IDX; 528 break; 529 case SSL_RC2: 530 i = SSL_ENC_RC2_IDX; 531 break; 532 case SSL_IDEA: 533 i = SSL_ENC_IDEA_IDX; 534 break; 535 case SSL_eNULL: 536 i = SSL_ENC_NULL_IDX; 537 break; 538 case SSL_AES128: 539 i = SSL_ENC_AES128_IDX; 540 break; 541 case SSL_AES256: 542 i = SSL_ENC_AES256_IDX; 543 break; 544 case SSL_CAMELLIA128: 545 i = SSL_ENC_CAMELLIA128_IDX; 546 break; 547 case SSL_CAMELLIA256: 548 i = SSL_ENC_CAMELLIA256_IDX; 549 break; 550 case SSL_eGOST2814789CNT: 551 i = SSL_ENC_GOST89_IDX; 552 break; 553 case SSL_SEED: 554 i = SSL_ENC_SEED_IDX; 555 break; 556 case SSL_AES128GCM: 557 i = SSL_ENC_AES128GCM_IDX; 558 break; 559 case SSL_AES256GCM: 560 i = SSL_ENC_AES256GCM_IDX; 561 break; 562 default: 563 i = -1; 564 break; 565 } 566 567 if ((i < 0) || (i >= SSL_ENC_NUM_IDX)) 568 *enc = NULL; 569 else { 570 if (i == SSL_ENC_NULL_IDX) 571 *enc = EVP_enc_null(); 572 else 573 *enc = ssl_cipher_methods[i]; 574 } 575 576 switch (c->algorithm_mac) { 577 case SSL_MD5: 578 i = SSL_MD_MD5_IDX; 579 break; 580 case SSL_SHA1: 581 i = SSL_MD_SHA1_IDX; 582 break; 583 case SSL_SHA256: 584 i = SSL_MD_SHA256_IDX; 585 break; 586 case SSL_SHA384: 587 i = SSL_MD_SHA384_IDX; 588 break; 589 case SSL_GOST94: 590 i = SSL_MD_GOST94_IDX; 591 break; 592 case SSL_GOST89MAC: 593 i = SSL_MD_GOST89MAC_IDX; 594 break; 595 default: 596 i = -1; 597 break; 598 } 599 if ((i < 0) || (i >= SSL_MD_NUM_IDX)) { 600 *md = NULL; 601 if (mac_pkey_type != NULL) 602 *mac_pkey_type = NID_undef; 603 if (mac_secret_size != NULL) 604 *mac_secret_size = 0; 605 if (c->algorithm_mac == SSL_AEAD) 606 mac_pkey_type = NULL; 607 } else { 608 *md = ssl_digest_methods[i]; 609 if (mac_pkey_type != NULL) 610 *mac_pkey_type = ssl_mac_pkey_id[i]; 611 if (mac_secret_size != NULL) 612 *mac_secret_size = ssl_mac_secret_size[i]; 613 } 614 615 if ((*enc != NULL) && 616 (*md != NULL || (EVP_CIPHER_flags(*enc) & EVP_CIPH_FLAG_AEAD_CIPHER)) 617 && (!mac_pkey_type || *mac_pkey_type != NID_undef)) { 618 const EVP_CIPHER *evp; 619 620 if (s->ssl_version >> 8 != TLS1_VERSION_MAJOR || 621 s->ssl_version < TLS1_VERSION) 622 return 1; 623 624#ifdef OPENSSL_FIPS 625 if (FIPS_mode()) 626 return 1; 627#endif 628 629 if (c->algorithm_enc == SSL_RC4 && 630 c->algorithm_mac == SSL_MD5 && 631 (evp = EVP_get_cipherbyname("RC4-HMAC-MD5"))) 632 *enc = evp, *md = NULL; 633 else if (c->algorithm_enc == SSL_AES128 && 634 c->algorithm_mac == SSL_SHA1 && 635 (evp = EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1"))) 636 *enc = evp, *md = NULL; 637 else if (c->algorithm_enc == SSL_AES256 && 638 c->algorithm_mac == SSL_SHA1 && 639 (evp = EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1"))) 640 *enc = evp, *md = NULL; 641 return (1); 642 } else 643 return (0); 644} 645 646int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md) 647{ 648 if (idx < 0 || idx >= SSL_MD_NUM_IDX) { 649 return 0; 650 } 651 *mask = ssl_handshake_digest_flag[idx]; 652 if (*mask) 653 *md = ssl_digest_methods[idx]; 654 else 655 *md = NULL; 656 return 1; 657} 658 659#define ITEM_SEP(a) \ 660 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) 661 662static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, 663 CIPHER_ORDER **tail) 664{ 665 if (curr == *tail) 666 return; 667 if (curr == *head) 668 *head = curr->next; 669 if (curr->prev != NULL) 670 curr->prev->next = curr->next; 671 if (curr->next != NULL) 672 curr->next->prev = curr->prev; 673 (*tail)->next = curr; 674 curr->prev = *tail; 675 curr->next = NULL; 676 *tail = curr; 677} 678 679static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, 680 CIPHER_ORDER **tail) 681{ 682 if (curr == *head) 683 return; 684 if (curr == *tail) 685 *tail = curr->prev; 686 if (curr->next != NULL) 687 curr->next->prev = curr->prev; 688 if (curr->prev != NULL) 689 curr->prev->next = curr->next; 690 (*head)->prev = curr; 691 curr->next = *head; 692 curr->prev = NULL; 693 *head = curr; 694} 695 696static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, 697 unsigned long *enc, unsigned long *mac, 698 unsigned long *ssl) 699{ 700 *mkey = 0; 701 *auth = 0; 702 *enc = 0; 703 *mac = 0; 704 *ssl = 0; 705 706#ifdef OPENSSL_NO_RSA 707 *mkey |= SSL_kRSA; 708 *auth |= SSL_aRSA; 709#endif 710#ifdef OPENSSL_NO_DSA 711 *auth |= SSL_aDSS; 712#endif 713 *mkey |= SSL_kDHr | SSL_kDHd; /* no such ciphersuites supported! */ 714 *auth |= SSL_aDH; 715#ifdef OPENSSL_NO_DH 716 *mkey |= SSL_kDHr | SSL_kDHd | SSL_kEDH; 717 *auth |= SSL_aDH; 718#endif 719#ifdef OPENSSL_NO_KRB5 720 *mkey |= SSL_kKRB5; 721 *auth |= SSL_aKRB5; 722#endif 723#ifdef OPENSSL_NO_ECDSA 724 *auth |= SSL_aECDSA; 725#endif 726#ifdef OPENSSL_NO_ECDH 727 *mkey |= SSL_kECDHe | SSL_kECDHr; 728 *auth |= SSL_aECDH; 729#endif 730#ifdef OPENSSL_NO_PSK 731 *mkey |= SSL_kPSK; 732 *auth |= SSL_aPSK; 733#endif 734#ifdef OPENSSL_NO_SRP 735 *mkey |= SSL_kSRP; 736#endif 737 /* 738 * Check for presence of GOST 34.10 algorithms, and if they do not 739 * present, disable appropriate auth and key exchange 740 */ 741 if (!get_optional_pkey_id("gost94")) { 742 *auth |= SSL_aGOST94; 743 } 744 if (!get_optional_pkey_id("gost2001")) { 745 *auth |= SSL_aGOST01; 746 } 747 /* 748 * Disable GOST key exchange if no GOST signature algs are available * 749 */ 750 if ((*auth & (SSL_aGOST94 | SSL_aGOST01)) == (SSL_aGOST94 | SSL_aGOST01)) { 751 *mkey |= SSL_kGOST; 752 } 753#ifdef SSL_FORBID_ENULL 754 *enc |= SSL_eNULL; 755#endif 756 757 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX] == NULL) ? SSL_DES : 0; 758 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES : 0; 759 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX] == NULL) ? SSL_RC4 : 0; 760 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX] == NULL) ? SSL_RC2 : 0; 761 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA : 0; 762 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128 : 0; 763 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256 : 0; 764 *enc |= 765 (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] == 766 NULL) ? SSL_AES128GCM : 0; 767 *enc |= 768 (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] == 769 NULL) ? SSL_AES256GCM : 0; 770 *enc |= 771 (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == 772 NULL) ? SSL_CAMELLIA128 : 0; 773 *enc |= 774 (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == 775 NULL) ? SSL_CAMELLIA256 : 0; 776 *enc |= 777 (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == 778 NULL) ? SSL_eGOST2814789CNT : 0; 779 *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED : 0; 780 781 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX] == NULL) ? SSL_MD5 : 0; 782 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1 : 0; 783 *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256 : 0; 784 *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384 : 0; 785 *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94 : 0; 786 *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL 787 || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] == 788 NID_undef) ? SSL_GOST89MAC : 0; 789 790} 791 792static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, 793 int num_of_ciphers, 794 unsigned long disabled_mkey, 795 unsigned long disabled_auth, 796 unsigned long disabled_enc, 797 unsigned long disabled_mac, 798 unsigned long disabled_ssl, 799 CIPHER_ORDER *co_list, 800 CIPHER_ORDER **head_p, 801 CIPHER_ORDER **tail_p) 802{ 803 int i, co_list_num; 804 const SSL_CIPHER *c; 805 806 /* 807 * We have num_of_ciphers descriptions compiled in, depending on the 808 * method selected (SSLv2 and/or SSLv3, TLSv1 etc). 809 * These will later be sorted in a linked list with at most num 810 * entries. 811 */ 812 813 /* Get the initial list of ciphers */ 814 co_list_num = 0; /* actual count of ciphers */ 815 for (i = 0; i < num_of_ciphers; i++) { 816 c = ssl_method->get_cipher(i); 817 /* drop those that use any of that is not available */ 818 if ((c != NULL) && c->valid && 819#ifdef OPENSSL_FIPS 820 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) && 821#endif 822 !(c->algorithm_mkey & disabled_mkey) && 823 !(c->algorithm_auth & disabled_auth) && 824 !(c->algorithm_enc & disabled_enc) && 825 !(c->algorithm_mac & disabled_mac) && 826 !(c->algorithm_ssl & disabled_ssl)) { 827 co_list[co_list_num].cipher = c; 828 co_list[co_list_num].next = NULL; 829 co_list[co_list_num].prev = NULL; 830 co_list[co_list_num].active = 0; 831 co_list_num++; 832#ifdef KSSL_DEBUG 833 fprintf(stderr, "\t%d: %s %lx %lx %lx\n", i, c->name, c->id, 834 c->algorithm_mkey, c->algorithm_auth); 835#endif /* KSSL_DEBUG */ 836 /* 837 * if (!sk_push(ca_list,(char *)c)) goto err; 838 */ 839 } 840 } 841 842 /* 843 * Prepare linked list from list entries 844 */ 845 if (co_list_num > 0) { 846 co_list[0].prev = NULL; 847 848 if (co_list_num > 1) { 849 co_list[0].next = &co_list[1]; 850 851 for (i = 1; i < co_list_num - 1; i++) { 852 co_list[i].prev = &co_list[i - 1]; 853 co_list[i].next = &co_list[i + 1]; 854 } 855 856 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; 857 } 858 859 co_list[co_list_num - 1].next = NULL; 860 861 *head_p = &co_list[0]; 862 *tail_p = &co_list[co_list_num - 1]; 863 } 864} 865 866static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, 867 int num_of_group_aliases, 868 unsigned long disabled_mkey, 869 unsigned long disabled_auth, 870 unsigned long disabled_enc, 871 unsigned long disabled_mac, 872 unsigned long disabled_ssl, 873 CIPHER_ORDER *head) 874{ 875 CIPHER_ORDER *ciph_curr; 876 const SSL_CIPHER **ca_curr; 877 int i; 878 unsigned long mask_mkey = ~disabled_mkey; 879 unsigned long mask_auth = ~disabled_auth; 880 unsigned long mask_enc = ~disabled_enc; 881 unsigned long mask_mac = ~disabled_mac; 882 unsigned long mask_ssl = ~disabled_ssl; 883 884 /* 885 * First, add the real ciphers as already collected 886 */ 887 ciph_curr = head; 888 ca_curr = ca_list; 889 while (ciph_curr != NULL) { 890 *ca_curr = ciph_curr->cipher; 891 ca_curr++; 892 ciph_curr = ciph_curr->next; 893 } 894 895 /* 896 * Now we add the available ones from the cipher_aliases[] table. 897 * They represent either one or more algorithms, some of which 898 * in any affected category must be supported (set in enabled_mask), 899 * or represent a cipher strength value (will be added in any case because algorithms=0). 900 */ 901 for (i = 0; i < num_of_group_aliases; i++) { 902 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey; 903 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth; 904 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc; 905 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac; 906 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl; 907 908 if (algorithm_mkey) 909 if ((algorithm_mkey & mask_mkey) == 0) 910 continue; 911 912 if (algorithm_auth) 913 if ((algorithm_auth & mask_auth) == 0) 914 continue; 915 916 if (algorithm_enc) 917 if ((algorithm_enc & mask_enc) == 0) 918 continue; 919 920 if (algorithm_mac) 921 if ((algorithm_mac & mask_mac) == 0) 922 continue; 923 924 if (algorithm_ssl) 925 if ((algorithm_ssl & mask_ssl) == 0) 926 continue; 927 928 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); 929 ca_curr++; 930 } 931 932 *ca_curr = NULL; /* end of list */ 933} 934 935static void ssl_cipher_apply_rule(unsigned long cipher_id, 936 unsigned long alg_mkey, 937 unsigned long alg_auth, 938 unsigned long alg_enc, 939 unsigned long alg_mac, 940 unsigned long alg_ssl, 941 unsigned long algo_strength, int rule, 942 int strength_bits, CIPHER_ORDER **head_p, 943 CIPHER_ORDER **tail_p) 944{ 945 CIPHER_ORDER *head, *tail, *curr, *next, *last; 946 const SSL_CIPHER *cp; 947 int reverse = 0; 948 949#ifdef CIPHER_DEBUG 950 fprintf(stderr, 951 "Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n", 952 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, 953 algo_strength, strength_bits); 954#endif 955 956 if (rule == CIPHER_DEL) 957 reverse = 1; /* needed to maintain sorting between 958 * currently deleted ciphers */ 959 960 head = *head_p; 961 tail = *tail_p; 962 963 if (reverse) { 964 next = tail; 965 last = head; 966 } else { 967 next = head; 968 last = tail; 969 } 970 971 curr = NULL; 972 for (;;) { 973 if (curr == last) 974 break; 975 976 curr = next; 977 978 if (curr == NULL) 979 break; 980 981 next = reverse ? curr->prev : curr->next; 982 983 cp = curr->cipher; 984 985 /* 986 * Selection criteria is either the value of strength_bits 987 * or the algorithms used. 988 */ 989 if (strength_bits >= 0) { 990 if (strength_bits != cp->strength_bits) 991 continue; 992 } else { 993#ifdef CIPHER_DEBUG 994 fprintf(stderr, 995 "\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n", 996 cp->name, cp->algorithm_mkey, cp->algorithm_auth, 997 cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl, 998 cp->algo_strength); 999#endif 1000 if (algo_strength == SSL_EXP_MASK && SSL_C_IS_EXPORT(cp)) 1001 goto ok; 1002 if (alg_ssl == ~SSL_SSLV2 && cp->algorithm_ssl == SSL_SSLV2) 1003 goto ok; 1004 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) 1005 continue; 1006 if (alg_auth && !(alg_auth & cp->algorithm_auth)) 1007 continue; 1008 if (alg_enc && !(alg_enc & cp->algorithm_enc)) 1009 continue; 1010 if (alg_mac && !(alg_mac & cp->algorithm_mac)) 1011 continue; 1012 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl)) 1013 continue; 1014 if ((algo_strength & SSL_EXP_MASK) 1015 && !(algo_strength & SSL_EXP_MASK & cp->algo_strength)) 1016 continue; 1017 if ((algo_strength & SSL_STRONG_MASK) 1018 && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) 1019 continue; 1020 } 1021 1022 ok: 1023 1024#ifdef CIPHER_DEBUG 1025 fprintf(stderr, "Action = %d\n", rule); 1026#endif 1027 1028 /* add the cipher if it has not been added yet. */ 1029 if (rule == CIPHER_ADD) { 1030 /* reverse == 0 */ 1031 if (!curr->active) { 1032 ll_append_tail(&head, curr, &tail); 1033 curr->active = 1; 1034 } 1035 } 1036 /* Move the added cipher to this location */ 1037 else if (rule == CIPHER_ORD) { 1038 /* reverse == 0 */ 1039 if (curr->active) { 1040 ll_append_tail(&head, curr, &tail); 1041 } 1042 } else if (rule == CIPHER_DEL) { 1043 /* reverse == 1 */ 1044 if (curr->active) { 1045 /* 1046 * most recently deleted ciphersuites get best positions for 1047 * any future CIPHER_ADD (note that the CIPHER_DEL loop works 1048 * in reverse to maintain the order) 1049 */ 1050 ll_append_head(&head, curr, &tail); 1051 curr->active = 0; 1052 } 1053 } else if (rule == CIPHER_KILL) { 1054 /* reverse == 0 */ 1055 if (head == curr) 1056 head = curr->next; 1057 else 1058 curr->prev->next = curr->next; 1059 if (tail == curr) 1060 tail = curr->prev; 1061 curr->active = 0; 1062 if (curr->next != NULL) 1063 curr->next->prev = curr->prev; 1064 if (curr->prev != NULL) 1065 curr->prev->next = curr->next; 1066 curr->next = NULL; 1067 curr->prev = NULL; 1068 } 1069 } 1070 1071 *head_p = head; 1072 *tail_p = tail; 1073} 1074 1075static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, 1076 CIPHER_ORDER **tail_p) 1077{ 1078 int max_strength_bits, i, *number_uses; 1079 CIPHER_ORDER *curr; 1080 1081 /* 1082 * This routine sorts the ciphers with descending strength. The sorting 1083 * must keep the pre-sorted sequence, so we apply the normal sorting 1084 * routine as '+' movement to the end of the list. 1085 */ 1086 max_strength_bits = 0; 1087 curr = *head_p; 1088 while (curr != NULL) { 1089 if (curr->active && (curr->cipher->strength_bits > max_strength_bits)) 1090 max_strength_bits = curr->cipher->strength_bits; 1091 curr = curr->next; 1092 } 1093 1094 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 1095 if (!number_uses) { 1096 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT, ERR_R_MALLOC_FAILURE); 1097 return (0); 1098 } 1099 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 1100 1101 /* 1102 * Now find the strength_bits values actually used 1103 */ 1104 curr = *head_p; 1105 while (curr != NULL) { 1106 if (curr->active) 1107 number_uses[curr->cipher->strength_bits]++; 1108 curr = curr->next; 1109 } 1110 /* 1111 * Go through the list of used strength_bits values in descending 1112 * order. 1113 */ 1114 for (i = max_strength_bits; i >= 0; i--) 1115 if (number_uses[i] > 0) 1116 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, 1117 tail_p); 1118 1119 OPENSSL_free(number_uses); 1120 return (1); 1121} 1122 1123static int ssl_cipher_process_rulestr(const char *rule_str, 1124 CIPHER_ORDER **head_p, 1125 CIPHER_ORDER **tail_p, 1126 const SSL_CIPHER **ca_list) 1127{ 1128 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, 1129 algo_strength; 1130 const char *l, *buf; 1131 int j, multi, found, rule, retval, ok, buflen; 1132 unsigned long cipher_id = 0; 1133 char ch; 1134 1135 retval = 1; 1136 l = rule_str; 1137 for (;;) { 1138 ch = *l; 1139 1140 if (ch == '\0') 1141 break; /* done */ 1142 if (ch == '-') { 1143 rule = CIPHER_DEL; 1144 l++; 1145 } else if (ch == '+') { 1146 rule = CIPHER_ORD; 1147 l++; 1148 } else if (ch == '!') { 1149 rule = CIPHER_KILL; 1150 l++; 1151 } else if (ch == '@') { 1152 rule = CIPHER_SPECIAL; 1153 l++; 1154 } else { 1155 rule = CIPHER_ADD; 1156 } 1157 1158 if (ITEM_SEP(ch)) { 1159 l++; 1160 continue; 1161 } 1162 1163 alg_mkey = 0; 1164 alg_auth = 0; 1165 alg_enc = 0; 1166 alg_mac = 0; 1167 alg_ssl = 0; 1168 algo_strength = 0; 1169 1170 for (;;) { 1171 ch = *l; 1172 buf = l; 1173 buflen = 0; 1174#ifndef CHARSET_EBCDIC 1175 while (((ch >= 'A') && (ch <= 'Z')) || 1176 ((ch >= '0') && (ch <= '9')) || 1177 ((ch >= 'a') && (ch <= 'z')) || (ch == '-') || (ch == '.')) 1178#else 1179 while (isalnum(ch) || (ch == '-') || (ch == '.')) 1180#endif 1181 { 1182 ch = *(++l); 1183 buflen++; 1184 } 1185 1186 if (buflen == 0) { 1187 /* 1188 * We hit something we cannot deal with, 1189 * it is no command or separator nor 1190 * alphanumeric, so we call this an error. 1191 */ 1192 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1193 SSL_R_INVALID_COMMAND); 1194 retval = found = 0; 1195 l++; 1196 break; 1197 } 1198 1199 if (rule == CIPHER_SPECIAL) { 1200 found = 0; /* unused -- avoid compiler warning */ 1201 break; /* special treatment */ 1202 } 1203 1204 /* check for multi-part specification */ 1205 if (ch == '+') { 1206 multi = 1; 1207 l++; 1208 } else 1209 multi = 0; 1210 1211 /* 1212 * Now search for the cipher alias in the ca_list. Be careful 1213 * with the strncmp, because the "buflen" limitation 1214 * will make the rule "ADH:SOME" and the cipher 1215 * "ADH-MY-CIPHER" look like a match for buflen=3. 1216 * So additionally check whether the cipher name found 1217 * has the correct length. We can save a strlen() call: 1218 * just checking for the '\0' at the right place is 1219 * sufficient, we have to strncmp() anyway. (We cannot 1220 * use strcmp(), because buf is not '\0' terminated.) 1221 */ 1222 j = found = 0; 1223 cipher_id = 0; 1224 while (ca_list[j]) { 1225 if (!strncmp(buf, ca_list[j]->name, buflen) && 1226 (ca_list[j]->name[buflen] == '\0')) { 1227 found = 1; 1228 break; 1229 } else 1230 j++; 1231 } 1232 1233 if (!found) 1234 break; /* ignore this entry */ 1235 1236 if (ca_list[j]->algorithm_mkey) { 1237 if (alg_mkey) { 1238 alg_mkey &= ca_list[j]->algorithm_mkey; 1239 if (!alg_mkey) { 1240 found = 0; 1241 break; 1242 } 1243 } else 1244 alg_mkey = ca_list[j]->algorithm_mkey; 1245 } 1246 1247 if (ca_list[j]->algorithm_auth) { 1248 if (alg_auth) { 1249 alg_auth &= ca_list[j]->algorithm_auth; 1250 if (!alg_auth) { 1251 found = 0; 1252 break; 1253 } 1254 } else 1255 alg_auth = ca_list[j]->algorithm_auth; 1256 } 1257 1258 if (ca_list[j]->algorithm_enc) { 1259 if (alg_enc) { 1260 alg_enc &= ca_list[j]->algorithm_enc; 1261 if (!alg_enc) { 1262 found = 0; 1263 break; 1264 } 1265 } else 1266 alg_enc = ca_list[j]->algorithm_enc; 1267 } 1268 1269 if (ca_list[j]->algorithm_mac) { 1270 if (alg_mac) { 1271 alg_mac &= ca_list[j]->algorithm_mac; 1272 if (!alg_mac) { 1273 found = 0; 1274 break; 1275 } 1276 } else 1277 alg_mac = ca_list[j]->algorithm_mac; 1278 } 1279 1280 if (ca_list[j]->algo_strength & SSL_EXP_MASK) { 1281 if (algo_strength & SSL_EXP_MASK) { 1282 algo_strength &= 1283 (ca_list[j]->algo_strength & SSL_EXP_MASK) | 1284 ~SSL_EXP_MASK; 1285 if (!(algo_strength & SSL_EXP_MASK)) { 1286 found = 0; 1287 break; 1288 } 1289 } else 1290 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; 1291 } 1292 1293 if (ca_list[j]->algo_strength & SSL_STRONG_MASK) { 1294 if (algo_strength & SSL_STRONG_MASK) { 1295 algo_strength &= 1296 (ca_list[j]->algo_strength & SSL_STRONG_MASK) | 1297 ~SSL_STRONG_MASK; 1298 if (!(algo_strength & SSL_STRONG_MASK)) { 1299 found = 0; 1300 break; 1301 } 1302 } else 1303 algo_strength |= 1304 ca_list[j]->algo_strength & SSL_STRONG_MASK; 1305 } 1306 1307 if (ca_list[j]->valid) { 1308 /* 1309 * explicit ciphersuite found; its protocol version does not 1310 * become part of the search pattern! 1311 */ 1312 1313 cipher_id = ca_list[j]->id; 1314 } else { 1315 /* 1316 * not an explicit ciphersuite; only in this case, the 1317 * protocol version is considered part of the search pattern 1318 */ 1319 1320 if (ca_list[j]->algorithm_ssl) { 1321 if (alg_ssl) { 1322 alg_ssl &= ca_list[j]->algorithm_ssl; 1323 if (!alg_ssl) { 1324 found = 0; 1325 break; 1326 } 1327 } else 1328 alg_ssl = ca_list[j]->algorithm_ssl; 1329 } 1330 } 1331 1332 if (!multi) 1333 break; 1334 } 1335 1336 /* 1337 * Ok, we have the rule, now apply it 1338 */ 1339 if (rule == CIPHER_SPECIAL) { /* special command */ 1340 ok = 0; 1341 if ((buflen == 8) && !strncmp(buf, "STRENGTH", 8)) 1342 ok = ssl_cipher_strength_sort(head_p, tail_p); 1343 else 1344 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1345 SSL_R_INVALID_COMMAND); 1346 if (ok == 0) 1347 retval = 0; 1348 /* 1349 * We do not support any "multi" options 1350 * together with "@", so throw away the 1351 * rest of the command, if any left, until 1352 * end or ':' is found. 1353 */ 1354 while ((*l != '\0') && !ITEM_SEP(*l)) 1355 l++; 1356 } else if (found) { 1357 ssl_cipher_apply_rule(cipher_id, 1358 alg_mkey, alg_auth, alg_enc, alg_mac, 1359 alg_ssl, algo_strength, rule, -1, head_p, 1360 tail_p); 1361 } else { 1362 while ((*l != '\0') && !ITEM_SEP(*l)) 1363 l++; 1364 } 1365 if (*l == '\0') 1366 break; /* done */ 1367 } 1368 1369 return (retval); 1370} 1371 1372STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK_OF(SSL_CIPHER) 1373 **cipher_list, STACK_OF(SSL_CIPHER) 1374 **cipher_list_by_id, 1375 const char *rule_str) 1376{ 1377 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 1378 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, 1379 disabled_ssl; 1380 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 1381 const char *rule_p; 1382 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 1383 const SSL_CIPHER **ca_list = NULL; 1384 1385 /* 1386 * Return with error if nothing to do. 1387 */ 1388 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 1389 return NULL; 1390 1391 /* 1392 * To reduce the work to do we only want to process the compiled 1393 * in algorithms, so we first get the mask of disabled ciphers. 1394 */ 1395 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, 1396 &disabled_mac, &disabled_ssl); 1397 1398 /* 1399 * Now we have to collect the available ciphers from the compiled 1400 * in ciphers. We cannot get more than the number compiled in, so 1401 * it is used for allocation. 1402 */ 1403 num_of_ciphers = ssl_method->num_ciphers(); 1404#ifdef KSSL_DEBUG 1405 fprintf(stderr, "ssl_create_cipher_list() for %d ciphers\n", 1406 num_of_ciphers); 1407#endif /* KSSL_DEBUG */ 1408 co_list = 1409 (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 1410 if (co_list == NULL) { 1411 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1412 return (NULL); /* Failure */ 1413 } 1414 1415 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, 1416 disabled_mkey, disabled_auth, disabled_enc, 1417 disabled_mac, disabled_ssl, co_list, &head, 1418 &tail); 1419 1420 /* Now arrange all ciphers by preference: */ 1421 1422 /* 1423 * Everything else being equal, prefer ephemeral ECDH over other key 1424 * exchange mechanisms 1425 */ 1426 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, 1427 &tail); 1428 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, 1429 &tail); 1430 1431 /* AES is our preferred symmetric cipher */ 1432 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, 1433 &tail); 1434 1435 /* Temporarily enable everything else for sorting */ 1436 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1437 1438 /* Low priority for MD5 */ 1439 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, 1440 &tail); 1441 1442 /* 1443 * Move anonymous ciphers to the end. Usually, these will remain 1444 * disabled. (For applications that allow them, they aren't too bad, but 1445 * we prefer authenticated ciphers.) 1446 */ 1447 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, 1448 &tail); 1449 1450 /* Move ciphers without forward secrecy to the end */ 1451 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, 1452 &tail); 1453 /* 1454 * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, 1455 * &head, &tail); 1456 */ 1457 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, 1458 &tail); 1459 ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, 1460 &tail); 1461 ssl_cipher_apply_rule(0, SSL_kKRB5, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, 1462 &tail); 1463 1464 /* RC4 is sort-of broken -- move the the end */ 1465 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, 1466 &tail); 1467 1468 /* 1469 * Now sort by symmetric encryption strength. The above ordering remains 1470 * in force within each class 1471 */ 1472 if (!ssl_cipher_strength_sort(&head, &tail)) { 1473 OPENSSL_free(co_list); 1474 return NULL; 1475 } 1476 1477 /* Now disable everything (maintaining the ordering!) */ 1478 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1479 1480 /* 1481 * We also need cipher aliases for selecting based on the rule_str. 1482 * There might be two types of entries in the rule_str: 1) names 1483 * of ciphers themselves 2) aliases for groups of ciphers. 1484 * For 1) we need the available ciphers and for 2) the cipher 1485 * groups of cipher_aliases added together in one list (otherwise 1486 * we would be happy with just the cipher_aliases table). 1487 */ 1488 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 1489 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 1490 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); 1491 if (ca_list == NULL) { 1492 OPENSSL_free(co_list); 1493 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST, ERR_R_MALLOC_FAILURE); 1494 return (NULL); /* Failure */ 1495 } 1496 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, 1497 disabled_mkey, disabled_auth, disabled_enc, 1498 disabled_mac, disabled_ssl, head); 1499 1500 /* 1501 * If the rule_string begins with DEFAULT, apply the default rule 1502 * before using the (possibly available) additional rules. 1503 */ 1504 ok = 1; 1505 rule_p = rule_str; 1506 if (strncmp(rule_str, "DEFAULT", 7) == 0) { 1507 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 1508 &head, &tail, ca_list); 1509 rule_p += 7; 1510 if (*rule_p == ':') 1511 rule_p++; 1512 } 1513 1514 if (ok && (strlen(rule_p) > 0)) 1515 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list); 1516 1517 OPENSSL_free((void *)ca_list); /* Not needed anymore */ 1518 1519 if (!ok) { /* Rule processing failure */ 1520 OPENSSL_free(co_list); 1521 return (NULL); 1522 } 1523 1524 /* 1525 * Allocate new "cipherstack" for the result, return with error 1526 * if we cannot get one. 1527 */ 1528 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) { 1529 OPENSSL_free(co_list); 1530 return (NULL); 1531 } 1532 1533 /* 1534 * The cipher selection for the list is done. The ciphers are added 1535 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1536 */ 1537 for (curr = head; curr != NULL; curr = curr->next) { 1538#ifdef OPENSSL_FIPS 1539 if (curr->active 1540 && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) 1541#else 1542 if (curr->active) 1543#endif 1544 { 1545 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1546#ifdef CIPHER_DEBUG 1547 fprintf(stderr, "<%s>\n", curr->cipher->name); 1548#endif 1549 } 1550 } 1551 OPENSSL_free(co_list); /* Not needed any longer */ 1552 1553 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1554 if (tmp_cipher_list == NULL) { 1555 sk_SSL_CIPHER_free(cipherstack); 1556 return NULL; 1557 } 1558 if (*cipher_list != NULL) 1559 sk_SSL_CIPHER_free(*cipher_list); 1560 *cipher_list = cipherstack; 1561 if (*cipher_list_by_id != NULL) 1562 sk_SSL_CIPHER_free(*cipher_list_by_id); 1563 *cipher_list_by_id = tmp_cipher_list; 1564 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id, 1565 ssl_cipher_ptr_id_cmp); 1566 1567 sk_SSL_CIPHER_sort(*cipher_list_by_id); 1568 return (cipherstack); 1569} 1570 1571char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) 1572{ 1573 int is_export, pkl, kl; 1574 const char *ver, *exp_str; 1575 const char *kx, *au, *enc, *mac; 1576 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, alg2; 1577#ifdef KSSL_DEBUG 1578 static const char *format = 1579 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n"; 1580#else 1581 static const char *format = 1582 "%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1583#endif /* KSSL_DEBUG */ 1584 1585 alg_mkey = cipher->algorithm_mkey; 1586 alg_auth = cipher->algorithm_auth; 1587 alg_enc = cipher->algorithm_enc; 1588 alg_mac = cipher->algorithm_mac; 1589 alg_ssl = cipher->algorithm_ssl; 1590 1591 alg2 = cipher->algorithm2; 1592 1593 is_export = SSL_C_IS_EXPORT(cipher); 1594 pkl = SSL_C_EXPORT_PKEYLENGTH(cipher); 1595 kl = SSL_C_EXPORT_KEYLENGTH(cipher); 1596 exp_str = is_export ? " export" : ""; 1597 1598 if (alg_ssl & SSL_SSLV2) 1599 ver = "SSLv2"; 1600 else if (alg_ssl & SSL_SSLV3) 1601 ver = "SSLv3"; 1602 else if (alg_ssl & SSL_TLSV1_2) 1603 ver = "TLSv1.2"; 1604 else 1605 ver = "unknown"; 1606 1607 switch (alg_mkey) { 1608 case SSL_kRSA: 1609 kx = is_export ? (pkl == 512 ? "RSA(512)" : "RSA(1024)") : "RSA"; 1610 break; 1611 case SSL_kDHr: 1612 kx = "DH/RSA"; 1613 break; 1614 case SSL_kDHd: 1615 kx = "DH/DSS"; 1616 break; 1617 case SSL_kKRB5: 1618 kx = "KRB5"; 1619 break; 1620 case SSL_kEDH: 1621 kx = is_export ? (pkl == 512 ? "DH(512)" : "DH(1024)") : "DH"; 1622 break; 1623 case SSL_kECDHr: 1624 kx = "ECDH/RSA"; 1625 break; 1626 case SSL_kECDHe: 1627 kx = "ECDH/ECDSA"; 1628 break; 1629 case SSL_kEECDH: 1630 kx = "ECDH"; 1631 break; 1632 case SSL_kPSK: 1633 kx = "PSK"; 1634 break; 1635 case SSL_kSRP: 1636 kx = "SRP"; 1637 break; 1638 case SSL_kGOST: 1639 kx = "GOST"; 1640 break; 1641 default: 1642 kx = "unknown"; 1643 } 1644 1645 switch (alg_auth) { 1646 case SSL_aRSA: 1647 au = "RSA"; 1648 break; 1649 case SSL_aDSS: 1650 au = "DSS"; 1651 break; 1652 case SSL_aDH: 1653 au = "DH"; 1654 break; 1655 case SSL_aKRB5: 1656 au = "KRB5"; 1657 break; 1658 case SSL_aECDH: 1659 au = "ECDH"; 1660 break; 1661 case SSL_aNULL: 1662 au = "None"; 1663 break; 1664 case SSL_aECDSA: 1665 au = "ECDSA"; 1666 break; 1667 case SSL_aPSK: 1668 au = "PSK"; 1669 break; 1670 case SSL_aSRP: 1671 au = "SRP"; 1672 break; 1673 case SSL_aGOST94: 1674 au = "GOST94"; 1675 break; 1676 case SSL_aGOST01: 1677 au = "GOST01"; 1678 break; 1679 default: 1680 au = "unknown"; 1681 break; 1682 } 1683 1684 switch (alg_enc) { 1685 case SSL_DES: 1686 enc = (is_export && kl == 5) ? "DES(40)" : "DES(56)"; 1687 break; 1688 case SSL_3DES: 1689 enc = "3DES(168)"; 1690 break; 1691 case SSL_RC4: 1692 enc = is_export ? (kl == 5 ? "RC4(40)" : "RC4(56)") 1693 : ((alg2 & SSL2_CF_8_BYTE_ENC) ? "RC4(64)" : "RC4(128)"); 1694 break; 1695 case SSL_RC2: 1696 enc = is_export ? (kl == 5 ? "RC2(40)" : "RC2(56)") : "RC2(128)"; 1697 break; 1698 case SSL_IDEA: 1699 enc = "IDEA(128)"; 1700 break; 1701 case SSL_eNULL: 1702 enc = "None"; 1703 break; 1704 case SSL_AES128: 1705 enc = "AES(128)"; 1706 break; 1707 case SSL_AES256: 1708 enc = "AES(256)"; 1709 break; 1710 case SSL_AES128GCM: 1711 enc = "AESGCM(128)"; 1712 break; 1713 case SSL_AES256GCM: 1714 enc = "AESGCM(256)"; 1715 break; 1716 case SSL_CAMELLIA128: 1717 enc = "Camellia(128)"; 1718 break; 1719 case SSL_CAMELLIA256: 1720 enc = "Camellia(256)"; 1721 break; 1722 case SSL_SEED: 1723 enc = "SEED(128)"; 1724 break; 1725 case SSL_eGOST2814789CNT: 1726 enc = "GOST89(256)"; 1727 break; 1728 default: 1729 enc = "unknown"; 1730 break; 1731 } 1732 1733 switch (alg_mac) { 1734 case SSL_MD5: 1735 mac = "MD5"; 1736 break; 1737 case SSL_SHA1: 1738 mac = "SHA1"; 1739 break; 1740 case SSL_SHA256: 1741 mac = "SHA256"; 1742 break; 1743 case SSL_SHA384: 1744 mac = "SHA384"; 1745 break; 1746 case SSL_AEAD: 1747 mac = "AEAD"; 1748 break; 1749 case SSL_GOST89MAC: 1750 mac = "GOST89"; 1751 break; 1752 case SSL_GOST94: 1753 mac = "GOST94"; 1754 break; 1755 default: 1756 mac = "unknown"; 1757 break; 1758 } 1759 1760 if (buf == NULL) { 1761 len = 128; 1762 buf = OPENSSL_malloc(len); 1763 if (buf == NULL) 1764 return ("OPENSSL_malloc Error"); 1765 } else if (len < 128) 1766 return ("Buffer too small"); 1767 1768#ifdef KSSL_DEBUG 1769 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac, 1770 exp_str, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl); 1771#else 1772 BIO_snprintf(buf, len, format, cipher->name, ver, kx, au, enc, mac, 1773 exp_str); 1774#endif /* KSSL_DEBUG */ 1775 return (buf); 1776} 1777 1778char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1779{ 1780 int i; 1781 1782 if (c == NULL) 1783 return ("(NONE)"); 1784 i = (int)(c->id >> 24L); 1785 if (i == 3) 1786 return ("TLSv1/SSLv3"); 1787 else if (i == 2) 1788 return ("SSLv2"); 1789 else 1790 return ("unknown"); 1791} 1792 1793/* return the actual cipher being used */ 1794const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1795{ 1796 if (c != NULL) 1797 return (c->name); 1798 return ("(NONE)"); 1799} 1800 1801/* number of bits for symmetric cipher */ 1802int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1803{ 1804 int ret = 0; 1805 1806 if (c != NULL) { 1807 if (alg_bits != NULL) 1808 *alg_bits = c->alg_bits; 1809 ret = c->strength_bits; 1810 } 1811 return (ret); 1812} 1813 1814unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c) 1815{ 1816 return c->id; 1817} 1818 1819SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1820{ 1821 SSL_COMP *ctmp; 1822 int i, nn; 1823 1824 if ((n == 0) || (sk == NULL)) 1825 return (NULL); 1826 nn = sk_SSL_COMP_num(sk); 1827 for (i = 0; i < nn; i++) { 1828 ctmp = sk_SSL_COMP_value(sk, i); 1829 if (ctmp->id == n) 1830 return (ctmp); 1831 } 1832 return (NULL); 1833} 1834 1835#ifdef OPENSSL_NO_COMP 1836void *SSL_COMP_get_compression_methods(void) 1837{ 1838 return NULL; 1839} 1840 1841int SSL_COMP_add_compression_method(int id, void *cm) 1842{ 1843 return 1; 1844} 1845 1846const char *SSL_COMP_get_name(const void *comp) 1847{ 1848 return NULL; 1849} 1850#else 1851STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1852{ 1853 load_builtin_compressions(); 1854 return (ssl_comp_methods); 1855} 1856 1857int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1858{ 1859 SSL_COMP *comp; 1860 1861 if (cm == NULL || cm->type == NID_undef) 1862 return 1; 1863 1864 /*- 1865 * According to draft-ietf-tls-compression-04.txt, the 1866 * compression number ranges should be the following: 1867 * 1868 * 0 to 63: methods defined by the IETF 1869 * 64 to 192: external party methods assigned by IANA 1870 * 193 to 255: reserved for private use 1871 */ 1872 if (id < 193 || id > 255) { 1873 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, 1874 SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1875 return 0; 1876 } 1877 1878 MemCheck_off(); 1879 comp = (SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1880 comp->id = id; 1881 comp->method = cm; 1882 load_builtin_compressions(); 1883 if (ssl_comp_methods && sk_SSL_COMP_find(ssl_comp_methods, comp) >= 0) { 1884 OPENSSL_free(comp); 1885 MemCheck_on(); 1886 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, 1887 SSL_R_DUPLICATE_COMPRESSION_ID); 1888 return (1); 1889 } else if ((ssl_comp_methods == NULL) 1890 || !sk_SSL_COMP_push(ssl_comp_methods, comp)) { 1891 OPENSSL_free(comp); 1892 MemCheck_on(); 1893 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD, ERR_R_MALLOC_FAILURE); 1894 return (1); 1895 } else { 1896 MemCheck_on(); 1897 return (0); 1898 } 1899} 1900 1901const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1902{ 1903 if (comp) 1904 return comp->name; 1905 return NULL; 1906} 1907 1908#endif 1909