ssl_ciph.c revision a1a5710c055e139ea00e785f9eb55b3af3e4dab1
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 14 168 169 170static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={ 171 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,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/*Constant SSL_MAX_DIGEST equal to size of digests array should be 187 * defined in the 188 * ssl_locl.h */ 189#define SSL_MD_NUM_IDX SSL_MAX_DIGEST 190static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ 191 NULL,NULL,NULL,NULL,NULL,NULL 192 }; 193/* PKEY_TYPE for GOST89MAC is known in advance, but, because 194 * implementation is engine-provided, we'll fill it only if 195 * corresponding EVP_PKEY_METHOD is found 196 */ 197static int ssl_mac_pkey_id[SSL_MD_NUM_IDX]={ 198 EVP_PKEY_HMAC,EVP_PKEY_HMAC,EVP_PKEY_HMAC,NID_undef, 199 EVP_PKEY_HMAC,EVP_PKEY_HMAC 200 }; 201 202static int ssl_mac_secret_size[SSL_MD_NUM_IDX]={ 203 0,0,0,0,0,0 204 }; 205 206static int ssl_handshake_digest_flag[SSL_MD_NUM_IDX]={ 207 SSL_HANDSHAKE_MAC_MD5,SSL_HANDSHAKE_MAC_SHA, 208 SSL_HANDSHAKE_MAC_GOST94, 0, SSL_HANDSHAKE_MAC_SHA256, 209 SSL_HANDSHAKE_MAC_SHA384 210 }; 211 212#define CIPHER_ADD 1 213#define CIPHER_KILL 2 214#define CIPHER_DEL 3 215#define CIPHER_ORD 4 216#define CIPHER_SPECIAL 5 217 218typedef struct cipher_order_st 219 { 220 const SSL_CIPHER *cipher; 221 int active; 222 int dead; 223 struct cipher_order_st *next,*prev; 224 } CIPHER_ORDER; 225 226static const SSL_CIPHER cipher_aliases[]={ 227 /* "ALL" doesn't include eNULL (must be specifically enabled) */ 228 {0,SSL_TXT_ALL,0, 0,0,~SSL_eNULL,0,0,0,0,0,0}, 229 /* "COMPLEMENTOFALL" */ 230 {0,SSL_TXT_CMPALL,0, 0,0,SSL_eNULL,0,0,0,0,0,0}, 231 232 /* "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in ALL!) */ 233 {0,SSL_TXT_CMPDEF,0, SSL_kEDH|SSL_kEECDH,SSL_aNULL,~SSL_eNULL,0,0,0,0,0,0}, 234 235 /* key exchange aliases 236 * (some of those using only a single bit here combine 237 * multiple key exchange algs according to the RFCs, 238 * e.g. kEDH combines DHE_DSS and DHE_RSA) */ 239 {0,SSL_TXT_kRSA,0, SSL_kRSA, 0,0,0,0,0,0,0,0}, 240 241 {0,SSL_TXT_kDHr,0, SSL_kDHr, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ 242 {0,SSL_TXT_kDHd,0, SSL_kDHd, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ 243 {0,SSL_TXT_kDH,0, SSL_kDHr|SSL_kDHd,0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ 244 {0,SSL_TXT_kEDH,0, SSL_kEDH, 0,0,0,0,0,0,0,0}, 245 {0,SSL_TXT_DH,0, SSL_kDHr|SSL_kDHd|SSL_kEDH,0,0,0,0,0,0,0,0}, 246 247 {0,SSL_TXT_kKRB5,0, SSL_kKRB5, 0,0,0,0,0,0,0,0}, 248 249 {0,SSL_TXT_kECDHr,0, SSL_kECDHr,0,0,0,0,0,0,0,0}, 250 {0,SSL_TXT_kECDHe,0, SSL_kECDHe,0,0,0,0,0,0,0,0}, 251 {0,SSL_TXT_kECDH,0, SSL_kECDHr|SSL_kECDHe,0,0,0,0,0,0,0,0}, 252 {0,SSL_TXT_kEECDH,0, SSL_kEECDH,0,0,0,0,0,0,0,0}, 253 {0,SSL_TXT_ECDH,0, SSL_kECDHr|SSL_kECDHe|SSL_kEECDH,0,0,0,0,0,0,0,0}, 254 255 {0,SSL_TXT_kPSK,0, SSL_kPSK, 0,0,0,0,0,0,0,0}, 256 {0,SSL_TXT_kSRP,0, SSL_kSRP, 0,0,0,0,0,0,0,0}, 257 {0,SSL_TXT_kGOST,0, SSL_kGOST,0,0,0,0,0,0,0,0}, 258 259 /* server authentication aliases */ 260 {0,SSL_TXT_aRSA,0, 0,SSL_aRSA, 0,0,0,0,0,0,0}, 261 {0,SSL_TXT_aDSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0}, 262 {0,SSL_TXT_DSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0}, 263 {0,SSL_TXT_aKRB5,0, 0,SSL_aKRB5, 0,0,0,0,0,0,0}, 264 {0,SSL_TXT_aNULL,0, 0,SSL_aNULL, 0,0,0,0,0,0,0}, 265 {0,SSL_TXT_aDH,0, 0,SSL_aDH, 0,0,0,0,0,0,0}, /* no such ciphersuites supported! */ 266 {0,SSL_TXT_aECDH,0, 0,SSL_aECDH, 0,0,0,0,0,0,0}, 267 {0,SSL_TXT_aECDSA,0, 0,SSL_aECDSA,0,0,0,0,0,0,0}, 268 {0,SSL_TXT_ECDSA,0, 0,SSL_aECDSA, 0,0,0,0,0,0,0}, 269 {0,SSL_TXT_aPSK,0, 0,SSL_aPSK, 0,0,0,0,0,0,0}, 270 {0,SSL_TXT_aGOST94,0,0,SSL_aGOST94,0,0,0,0,0,0,0}, 271 {0,SSL_TXT_aGOST01,0,0,SSL_aGOST01,0,0,0,0,0,0,0}, 272 {0,SSL_TXT_aGOST,0,0,SSL_aGOST94|SSL_aGOST01,0,0,0,0,0,0,0}, 273 274 /* aliases combining key exchange and server authentication */ 275 {0,SSL_TXT_EDH,0, SSL_kEDH,~SSL_aNULL,0,0,0,0,0,0,0}, 276 {0,SSL_TXT_EECDH,0, SSL_kEECDH,~SSL_aNULL,0,0,0,0,0,0,0}, 277 {0,SSL_TXT_NULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0}, 278 {0,SSL_TXT_KRB5,0, SSL_kKRB5,SSL_aKRB5,0,0,0,0,0,0,0}, 279 {0,SSL_TXT_RSA,0, SSL_kRSA,SSL_aRSA,0,0,0,0,0,0,0}, 280 {0,SSL_TXT_ADH,0, SSL_kEDH,SSL_aNULL,0,0,0,0,0,0,0}, 281 {0,SSL_TXT_AECDH,0, SSL_kEECDH,SSL_aNULL,0,0,0,0,0,0,0}, 282 {0,SSL_TXT_PSK,0, SSL_kPSK,SSL_aPSK,0,0,0,0,0,0,0}, 283 {0,SSL_TXT_SRP,0, SSL_kSRP,0,0,0,0,0,0,0,0}, 284 285 286 /* symmetric encryption aliases */ 287 {0,SSL_TXT_DES,0, 0,0,SSL_DES, 0,0,0,0,0,0}, 288 {0,SSL_TXT_3DES,0, 0,0,SSL_3DES, 0,0,0,0,0,0}, 289 {0,SSL_TXT_RC4,0, 0,0,SSL_RC4, 0,0,0,0,0,0}, 290 {0,SSL_TXT_RC2,0, 0,0,SSL_RC2, 0,0,0,0,0,0}, 291 {0,SSL_TXT_IDEA,0, 0,0,SSL_IDEA, 0,0,0,0,0,0}, 292 {0,SSL_TXT_SEED,0, 0,0,SSL_SEED, 0,0,0,0,0,0}, 293 {0,SSL_TXT_eNULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0}, 294 {0,SSL_TXT_AES128,0, 0,0,SSL_AES128|SSL_AES128GCM,0,0,0,0,0,0}, 295 {0,SSL_TXT_AES256,0, 0,0,SSL_AES256|SSL_AES256GCM,0,0,0,0,0,0}, 296 {0,SSL_TXT_AES,0, 0,0,SSL_AES,0,0,0,0,0,0}, 297 {0,SSL_TXT_AES_GCM,0, 0,0,SSL_AES128GCM|SSL_AES256GCM,0,0,0,0,0,0}, 298 {0,SSL_TXT_CAMELLIA128,0,0,0,SSL_CAMELLIA128,0,0,0,0,0,0}, 299 {0,SSL_TXT_CAMELLIA256,0,0,0,SSL_CAMELLIA256,0,0,0,0,0,0}, 300 {0,SSL_TXT_CAMELLIA ,0,0,0,SSL_CAMELLIA128|SSL_CAMELLIA256,0,0,0,0,0,0}, 301 302 /* MAC aliases */ 303 {0,SSL_TXT_MD5,0, 0,0,0,SSL_MD5, 0,0,0,0,0}, 304 {0,SSL_TXT_SHA1,0, 0,0,0,SSL_SHA1, 0,0,0,0,0}, 305 {0,SSL_TXT_SHA,0, 0,0,0,SSL_SHA1, 0,0,0,0,0}, 306 {0,SSL_TXT_GOST94,0, 0,0,0,SSL_GOST94, 0,0,0,0,0}, 307 {0,SSL_TXT_GOST89MAC,0, 0,0,0,SSL_GOST89MAC, 0,0,0,0,0}, 308 {0,SSL_TXT_SHA256,0, 0,0,0,SSL_SHA256, 0,0,0,0,0}, 309 {0,SSL_TXT_SHA384,0, 0,0,0,SSL_SHA384, 0,0,0,0,0}, 310 311 /* protocol version aliases */ 312 {0,SSL_TXT_SSLV2,0, 0,0,0,0,SSL_SSLV2, 0,0,0,0}, 313 {0,SSL_TXT_SSLV3,0, 0,0,0,0,SSL_SSLV3, 0,0,0,0}, 314 {0,SSL_TXT_TLSV1,0, 0,0,0,0,SSL_TLSV1, 0,0,0,0}, 315 316 /* export flag */ 317 {0,SSL_TXT_EXP,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, 318 {0,SSL_TXT_EXPORT,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, 319 320 /* strength classes */ 321 {0,SSL_TXT_EXP40,0, 0,0,0,0,0,SSL_EXP40, 0,0,0}, 322 {0,SSL_TXT_EXP56,0, 0,0,0,0,0,SSL_EXP56, 0,0,0}, 323 {0,SSL_TXT_LOW,0, 0,0,0,0,0,SSL_LOW, 0,0,0}, 324 {0,SSL_TXT_MEDIUM,0, 0,0,0,0,0,SSL_MEDIUM,0,0,0}, 325 {0,SSL_TXT_HIGH,0, 0,0,0,0,0,SSL_HIGH, 0,0,0}, 326 /* FIPS 140-2 approved ciphersuite */ 327 {0,SSL_TXT_FIPS,0, 0,0,~SSL_eNULL,0,0,SSL_FIPS, 0,0,0}, 328 }; 329/* Search for public key algorithm with given name and 330 * return its pkey_id if it is available. Otherwise return 0 331 */ 332#ifdef OPENSSL_NO_ENGINE 333 334static int get_optional_pkey_id(const char *pkey_name) 335 { 336 const EVP_PKEY_ASN1_METHOD *ameth; 337 int pkey_id=0; 338 ameth = EVP_PKEY_asn1_find_str(NULL,pkey_name,-1); 339 if (ameth) 340 { 341 EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); 342 } 343 return pkey_id; 344 } 345 346#else 347 348static int get_optional_pkey_id(const char *pkey_name) 349 { 350 const EVP_PKEY_ASN1_METHOD *ameth; 351 ENGINE *tmpeng = NULL; 352 int pkey_id=0; 353 ameth = EVP_PKEY_asn1_find_str(&tmpeng,pkey_name,-1); 354 if (ameth) 355 { 356 EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); 357 } 358 if (tmpeng) ENGINE_finish(tmpeng); 359 return pkey_id; 360 } 361 362#endif 363 364void ssl_load_ciphers(void) 365 { 366 ssl_cipher_methods[SSL_ENC_DES_IDX]= 367 EVP_get_cipherbyname(SN_des_cbc); 368 ssl_cipher_methods[SSL_ENC_3DES_IDX]= 369 EVP_get_cipherbyname(SN_des_ede3_cbc); 370 ssl_cipher_methods[SSL_ENC_RC4_IDX]= 371 EVP_get_cipherbyname(SN_rc4); 372 ssl_cipher_methods[SSL_ENC_RC2_IDX]= 373 EVP_get_cipherbyname(SN_rc2_cbc); 374#ifndef OPENSSL_NO_IDEA 375 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= 376 EVP_get_cipherbyname(SN_idea_cbc); 377#else 378 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL; 379#endif 380 ssl_cipher_methods[SSL_ENC_AES128_IDX]= 381 EVP_get_cipherbyname(SN_aes_128_cbc); 382 ssl_cipher_methods[SSL_ENC_AES256_IDX]= 383 EVP_get_cipherbyname(SN_aes_256_cbc); 384 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= 385 EVP_get_cipherbyname(SN_camellia_128_cbc); 386 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= 387 EVP_get_cipherbyname(SN_camellia_256_cbc); 388 ssl_cipher_methods[SSL_ENC_GOST89_IDX]= 389 EVP_get_cipherbyname(SN_gost89_cnt); 390 ssl_cipher_methods[SSL_ENC_SEED_IDX]= 391 EVP_get_cipherbyname(SN_seed_cbc); 392 393 ssl_cipher_methods[SSL_ENC_AES128GCM_IDX]= 394 EVP_get_cipherbyname(SN_aes_128_gcm); 395 ssl_cipher_methods[SSL_ENC_AES256GCM_IDX]= 396 EVP_get_cipherbyname(SN_aes_256_gcm); 397 398 ssl_digest_methods[SSL_MD_MD5_IDX]= 399 EVP_get_digestbyname(SN_md5); 400 ssl_mac_secret_size[SSL_MD_MD5_IDX]= 401 EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]); 402 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0); 403 ssl_digest_methods[SSL_MD_SHA1_IDX]= 404 EVP_get_digestbyname(SN_sha1); 405 ssl_mac_secret_size[SSL_MD_SHA1_IDX]= 406 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]); 407 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0); 408 ssl_digest_methods[SSL_MD_GOST94_IDX]= 409 EVP_get_digestbyname(SN_id_GostR3411_94); 410 if (ssl_digest_methods[SSL_MD_GOST94_IDX]) 411 { 412 ssl_mac_secret_size[SSL_MD_GOST94_IDX]= 413 EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]); 414 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0); 415 } 416 ssl_digest_methods[SSL_MD_GOST89MAC_IDX]= 417 EVP_get_digestbyname(SN_id_Gost28147_89_MAC); 418 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); 419 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) { 420 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX]=32; 421 } 422 423 ssl_digest_methods[SSL_MD_SHA256_IDX]= 424 EVP_get_digestbyname(SN_sha256); 425 ssl_mac_secret_size[SSL_MD_SHA256_IDX]= 426 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]); 427 ssl_digest_methods[SSL_MD_SHA384_IDX]= 428 EVP_get_digestbyname(SN_sha384); 429 ssl_mac_secret_size[SSL_MD_SHA384_IDX]= 430 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]); 431 } 432#ifndef OPENSSL_NO_COMP 433 434static int sk_comp_cmp(const SSL_COMP * const *a, 435 const SSL_COMP * const *b) 436 { 437 return((*a)->id-(*b)->id); 438 } 439 440static void load_builtin_compressions(void) 441 { 442 int got_write_lock = 0; 443 444 CRYPTO_r_lock(CRYPTO_LOCK_SSL); 445 if (ssl_comp_methods == NULL) 446 { 447 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 448 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 449 got_write_lock = 1; 450 451 if (ssl_comp_methods == NULL) 452 { 453 SSL_COMP *comp = NULL; 454 455 MemCheck_off(); 456 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); 457 if (ssl_comp_methods != NULL) 458 { 459 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 460 if (comp != NULL) 461 { 462 comp->method=COMP_zlib(); 463 if (comp->method 464 && comp->method->type == NID_undef) 465 OPENSSL_free(comp); 466 else 467 { 468 comp->id=SSL_COMP_ZLIB_IDX; 469 comp->name=comp->method->name; 470 sk_SSL_COMP_push(ssl_comp_methods,comp); 471 } 472 } 473 sk_SSL_COMP_sort(ssl_comp_methods); 474 } 475 MemCheck_on(); 476 } 477 } 478 479 if (got_write_lock) 480 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 481 else 482 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 483 } 484#endif 485 486int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 487 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size,SSL_COMP **comp) 488 { 489 int i; 490 const SSL_CIPHER *c; 491 492 c=s->cipher; 493 if (c == NULL) return(0); 494 if (comp != NULL) 495 { 496 SSL_COMP ctmp; 497#ifndef OPENSSL_NO_COMP 498 load_builtin_compressions(); 499#endif 500 501 *comp=NULL; 502 ctmp.id=s->compress_meth; 503 if (ssl_comp_methods != NULL) 504 { 505 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); 506 if (i >= 0) 507 *comp=sk_SSL_COMP_value(ssl_comp_methods,i); 508 else 509 *comp=NULL; 510 } 511 } 512 513 if ((enc == NULL) || (md == NULL)) return(0); 514 515 switch (c->algorithm_enc) 516 { 517 case SSL_DES: 518 i=SSL_ENC_DES_IDX; 519 break; 520 case SSL_3DES: 521 i=SSL_ENC_3DES_IDX; 522 break; 523 case SSL_RC4: 524 i=SSL_ENC_RC4_IDX; 525 break; 526 case SSL_RC2: 527 i=SSL_ENC_RC2_IDX; 528 break; 529 case SSL_IDEA: 530 i=SSL_ENC_IDEA_IDX; 531 break; 532 case SSL_eNULL: 533 i=SSL_ENC_NULL_IDX; 534 break; 535 case SSL_AES128: 536 i=SSL_ENC_AES128_IDX; 537 break; 538 case SSL_AES256: 539 i=SSL_ENC_AES256_IDX; 540 break; 541 case SSL_CAMELLIA128: 542 i=SSL_ENC_CAMELLIA128_IDX; 543 break; 544 case SSL_CAMELLIA256: 545 i=SSL_ENC_CAMELLIA256_IDX; 546 break; 547 case SSL_eGOST2814789CNT: 548 i=SSL_ENC_GOST89_IDX; 549 break; 550 case SSL_SEED: 551 i=SSL_ENC_SEED_IDX; 552 break; 553 case SSL_AES128GCM: 554 i=SSL_ENC_AES128GCM_IDX; 555 break; 556 case SSL_AES256GCM: 557 i=SSL_ENC_AES256GCM_IDX; 558 break; 559 default: 560 i= -1; 561 break; 562 } 563 564 if ((i < 0) || (i > SSL_ENC_NUM_IDX)) 565 *enc=NULL; 566 else 567 { 568 if (i == SSL_ENC_NULL_IDX) 569 *enc=EVP_enc_null(); 570 else 571 *enc=ssl_cipher_methods[i]; 572 } 573 574 switch (c->algorithm_mac) 575 { 576 case SSL_MD5: 577 i=SSL_MD_MD5_IDX; 578 break; 579 case SSL_SHA1: 580 i=SSL_MD_SHA1_IDX; 581 break; 582 case SSL_SHA256: 583 i=SSL_MD_SHA256_IDX; 584 break; 585 case SSL_SHA384: 586 i=SSL_MD_SHA384_IDX; 587 break; 588 case SSL_GOST94: 589 i = SSL_MD_GOST94_IDX; 590 break; 591 case SSL_GOST89MAC: 592 i = SSL_MD_GOST89MAC_IDX; 593 break; 594 default: 595 i= -1; 596 break; 597 } 598 if ((i < 0) || (i > SSL_MD_NUM_IDX)) 599 { 600 *md=NULL; 601 if (mac_pkey_type!=NULL) *mac_pkey_type = NID_undef; 602 if (mac_secret_size!=NULL) *mac_secret_size = 0; 603 if (c->algorithm_mac == SSL_AEAD) 604 mac_pkey_type = NULL; 605 } 606 else 607 { 608 *md=ssl_digest_methods[i]; 609 if (mac_pkey_type!=NULL) *mac_pkey_type = ssl_mac_pkey_id[i]; 610 if (mac_secret_size!=NULL) *mac_secret_size = ssl_mac_secret_size[i]; 611 } 612 613 if ((*enc != NULL) && 614 (*md != NULL || (EVP_CIPHER_flags(*enc)&EVP_CIPH_FLAG_AEAD_CIPHER)) && 615 (!mac_pkey_type||*mac_pkey_type != NID_undef)) 616 { 617 const EVP_CIPHER *evp; 618 619 if (s->ssl_version>>8 != TLS1_VERSION_MAJOR || 620 s->ssl_version < TLS1_VERSION) 621 return 1; 622 623 if (c->algorithm_enc == SSL_RC4 && 624 c->algorithm_mac == SSL_MD5 && 625 (evp=EVP_get_cipherbyname("RC4-HMAC-MD5"))) 626 *enc = evp, *md = NULL; 627 else if (c->algorithm_enc == SSL_AES128 && 628 c->algorithm_mac == SSL_SHA1 && 629 (evp=EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1"))) 630 *enc = evp, *md = NULL; 631 else if (c->algorithm_enc == SSL_AES256 && 632 c->algorithm_mac == SSL_SHA1 && 633 (evp=EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1"))) 634 *enc = evp, *md = NULL; 635 return(1); 636 } 637 else 638 return(0); 639 } 640 641int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md) 642{ 643 if (idx <0||idx>=SSL_MD_NUM_IDX) 644 { 645 return 0; 646 } 647 *mask = ssl_handshake_digest_flag[idx]; 648 if (*mask) 649 *md = ssl_digest_methods[idx]; 650 else 651 *md = NULL; 652 return 1; 653} 654 655#define ITEM_SEP(a) \ 656 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) 657 658static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, 659 CIPHER_ORDER **tail) 660 { 661 if (curr == *tail) return; 662 if (curr == *head) 663 *head=curr->next; 664 if (curr->prev != NULL) 665 curr->prev->next=curr->next; 666 if (curr->next != NULL) 667 curr->next->prev=curr->prev; 668 (*tail)->next=curr; 669 curr->prev= *tail; 670 curr->next=NULL; 671 *tail=curr; 672 } 673 674static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, 675 CIPHER_ORDER **tail) 676 { 677 if (curr == *head) return; 678 if (curr == *tail) 679 *tail=curr->prev; 680 if (curr->next != NULL) 681 curr->next->prev=curr->prev; 682 if (curr->prev != NULL) 683 curr->prev->next=curr->next; 684 (*head)->prev=curr; 685 curr->next= *head; 686 curr->prev=NULL; 687 *head=curr; 688 } 689 690static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl) 691 { 692 *mkey = 0; 693 *auth = 0; 694 *enc = 0; 695 *mac = 0; 696 *ssl = 0; 697 698#ifdef OPENSSL_NO_RSA 699 *mkey |= SSL_kRSA; 700 *auth |= SSL_aRSA; 701#endif 702#ifdef OPENSSL_NO_DSA 703 *auth |= SSL_aDSS; 704#endif 705 *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */ 706 *auth |= SSL_aDH; 707#ifdef OPENSSL_NO_DH 708 *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH; 709 *auth |= SSL_aDH; 710#endif 711#ifdef OPENSSL_NO_KRB5 712 *mkey |= SSL_kKRB5; 713 *auth |= SSL_aKRB5; 714#endif 715#ifdef OPENSSL_NO_ECDSA 716 *auth |= SSL_aECDSA; 717#endif 718#ifdef OPENSSL_NO_ECDH 719 *mkey |= SSL_kECDHe|SSL_kECDHr; 720 *auth |= SSL_aECDH; 721#endif 722#ifdef OPENSSL_NO_PSK 723 *mkey |= SSL_kPSK; 724 *auth |= SSL_aPSK; 725#endif 726#ifdef OPENSSL_NO_SRP 727 *mkey |= SSL_kSRP; 728#endif 729 /* Check for presence of GOST 34.10 algorithms, and if they 730 * do not present, disable appropriate auth and key exchange */ 731 if (!get_optional_pkey_id("gost94")) { 732 *auth |= SSL_aGOST94; 733 } 734 if (!get_optional_pkey_id("gost2001")) { 735 *auth |= SSL_aGOST01; 736 } 737 /* Disable GOST key exchange if no GOST signature algs are available * */ 738 if ((*auth & (SSL_aGOST94|SSL_aGOST01)) == (SSL_aGOST94|SSL_aGOST01)) { 739 *mkey |= SSL_kGOST; 740 } 741#ifdef SSL_FORBID_ENULL 742 *enc |= SSL_eNULL; 743#endif 744 745 746 747 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; 748 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; 749 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; 750 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; 751 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; 752 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0; 753 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0; 754 *enc |= (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] == NULL) ? SSL_AES128GCM:0; 755 *enc |= (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] == NULL) ? SSL_AES256GCM:0; 756 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0; 757 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0; 758 *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0; 759 *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; 760 761 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; 762 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; 763 *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256:0; 764 *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384:0; 765 *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94:0; 766 *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef)? SSL_GOST89MAC:0; 767 768 } 769 770static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, 771 int num_of_ciphers, 772 unsigned long disabled_mkey, unsigned long disabled_auth, 773 unsigned long disabled_enc, unsigned long disabled_mac, 774 unsigned long disabled_ssl, 775 CIPHER_ORDER *co_list, 776 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 777 { 778 int i, co_list_num; 779 const SSL_CIPHER *c; 780 781 /* 782 * We have num_of_ciphers descriptions compiled in, depending on the 783 * method selected (SSLv2 and/or SSLv3, TLSv1 etc). 784 * These will later be sorted in a linked list with at most num 785 * entries. 786 */ 787 788 /* Get the initial list of ciphers */ 789 co_list_num = 0; /* actual count of ciphers */ 790 for (i = 0; i < num_of_ciphers; i++) 791 { 792 c = ssl_method->get_cipher(i); 793 /* drop those that use any of that is not available */ 794 if ((c != NULL) && c->valid && 795#ifdef OPENSSL_FIPS 796 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) && 797#endif 798 !(c->algorithm_mkey & disabled_mkey) && 799 !(c->algorithm_auth & disabled_auth) && 800 !(c->algorithm_enc & disabled_enc) && 801 !(c->algorithm_mac & disabled_mac) && 802 !(c->algorithm_ssl & disabled_ssl)) 803 { 804 co_list[co_list_num].cipher = c; 805 co_list[co_list_num].next = NULL; 806 co_list[co_list_num].prev = NULL; 807 co_list[co_list_num].active = 0; 808 co_list_num++; 809#ifdef KSSL_DEBUG 810 printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth); 811#endif /* KSSL_DEBUG */ 812 /* 813 if (!sk_push(ca_list,(char *)c)) goto err; 814 */ 815 } 816 } 817 818 /* 819 * Prepare linked list from list entries 820 */ 821 if (co_list_num > 0) 822 { 823 co_list[0].prev = NULL; 824 825 if (co_list_num > 1) 826 { 827 co_list[0].next = &co_list[1]; 828 829 for (i = 1; i < co_list_num - 1; i++) 830 { 831 co_list[i].prev = &co_list[i - 1]; 832 co_list[i].next = &co_list[i + 1]; 833 } 834 835 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; 836 } 837 838 co_list[co_list_num - 1].next = NULL; 839 840 *head_p = &co_list[0]; 841 *tail_p = &co_list[co_list_num - 1]; 842 } 843 } 844 845static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, 846 int num_of_group_aliases, 847 unsigned long disabled_mkey, unsigned long disabled_auth, 848 unsigned long disabled_enc, unsigned long disabled_mac, 849 unsigned long disabled_ssl, 850 CIPHER_ORDER *head) 851 { 852 CIPHER_ORDER *ciph_curr; 853 const SSL_CIPHER **ca_curr; 854 int i; 855 unsigned long mask_mkey = ~disabled_mkey; 856 unsigned long mask_auth = ~disabled_auth; 857 unsigned long mask_enc = ~disabled_enc; 858 unsigned long mask_mac = ~disabled_mac; 859 unsigned long mask_ssl = ~disabled_ssl; 860 861 /* 862 * First, add the real ciphers as already collected 863 */ 864 ciph_curr = head; 865 ca_curr = ca_list; 866 while (ciph_curr != NULL) 867 { 868 *ca_curr = ciph_curr->cipher; 869 ca_curr++; 870 ciph_curr = ciph_curr->next; 871 } 872 873 /* 874 * Now we add the available ones from the cipher_aliases[] table. 875 * They represent either one or more algorithms, some of which 876 * in any affected category must be supported (set in enabled_mask), 877 * or represent a cipher strength value (will be added in any case because algorithms=0). 878 */ 879 for (i = 0; i < num_of_group_aliases; i++) 880 { 881 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey; 882 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth; 883 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc; 884 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac; 885 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl; 886 887 if (algorithm_mkey) 888 if ((algorithm_mkey & mask_mkey) == 0) 889 continue; 890 891 if (algorithm_auth) 892 if ((algorithm_auth & mask_auth) == 0) 893 continue; 894 895 if (algorithm_enc) 896 if ((algorithm_enc & mask_enc) == 0) 897 continue; 898 899 if (algorithm_mac) 900 if ((algorithm_mac & mask_mac) == 0) 901 continue; 902 903 if (algorithm_ssl) 904 if ((algorithm_ssl & mask_ssl) == 0) 905 continue; 906 907 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); 908 ca_curr++; 909 } 910 911 *ca_curr = NULL; /* end of list */ 912 } 913 914static void ssl_cipher_apply_rule(unsigned long cipher_id, 915 unsigned long alg_mkey, unsigned long alg_auth, 916 unsigned long alg_enc, unsigned long alg_mac, 917 unsigned long alg_ssl, 918 unsigned long algo_strength, 919 int rule, int strength_bits, 920 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 921 { 922 CIPHER_ORDER *head, *tail, *curr, *curr2, *last; 923 const SSL_CIPHER *cp; 924 int reverse = 0; 925 926#ifdef CIPHER_DEBUG 927 printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n", 928 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits); 929#endif 930 931 if (rule == CIPHER_DEL) 932 reverse = 1; /* needed to maintain sorting between currently deleted ciphers */ 933 934 head = *head_p; 935 tail = *tail_p; 936 937 if (reverse) 938 { 939 curr = tail; 940 last = head; 941 } 942 else 943 { 944 curr = head; 945 last = tail; 946 } 947 948 curr2 = curr; 949 for (;;) 950 { 951 if ((curr == NULL) || (curr == last)) break; 952 curr = curr2; 953 curr2 = reverse ? curr->prev : curr->next; 954 955 cp = curr->cipher; 956 957 /* 958 * Selection criteria is either the value of strength_bits 959 * or the algorithms used. 960 */ 961 if (strength_bits >= 0) 962 { 963 if (strength_bits != cp->strength_bits) 964 continue; 965 } 966 else 967 { 968#ifdef CIPHER_DEBUG 969 printf("\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n", cp->name, cp->algorithm_mkey, cp->algorithm_auth, cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl, cp->algo_strength); 970#endif 971 972 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) 973 continue; 974 if (alg_auth && !(alg_auth & cp->algorithm_auth)) 975 continue; 976 if (alg_enc && !(alg_enc & cp->algorithm_enc)) 977 continue; 978 if (alg_mac && !(alg_mac & cp->algorithm_mac)) 979 continue; 980 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl)) 981 continue; 982 if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength)) 983 continue; 984 if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) 985 continue; 986 } 987 988#ifdef CIPHER_DEBUG 989 printf("Action = %d\n", rule); 990#endif 991 992 /* add the cipher if it has not been added yet. */ 993 if (rule == CIPHER_ADD) 994 { 995 /* reverse == 0 */ 996 if (!curr->active) 997 { 998 ll_append_tail(&head, curr, &tail); 999 curr->active = 1; 1000 } 1001 } 1002 /* Move the added cipher to this location */ 1003 else if (rule == CIPHER_ORD) 1004 { 1005 /* reverse == 0 */ 1006 if (curr->active) 1007 { 1008 ll_append_tail(&head, curr, &tail); 1009 } 1010 } 1011 else if (rule == CIPHER_DEL) 1012 { 1013 /* reverse == 1 */ 1014 if (curr->active) 1015 { 1016 /* most recently deleted ciphersuites get best positions 1017 * for any future CIPHER_ADD (note that the CIPHER_DEL loop 1018 * works in reverse to maintain the order) */ 1019 ll_append_head(&head, curr, &tail); 1020 curr->active = 0; 1021 } 1022 } 1023 else if (rule == CIPHER_KILL) 1024 { 1025 /* reverse == 0 */ 1026 if (head == curr) 1027 head = curr->next; 1028 else 1029 curr->prev->next = curr->next; 1030 if (tail == curr) 1031 tail = curr->prev; 1032 curr->active = 0; 1033 if (curr->next != NULL) 1034 curr->next->prev = curr->prev; 1035 if (curr->prev != NULL) 1036 curr->prev->next = curr->next; 1037 curr->next = NULL; 1038 curr->prev = NULL; 1039 } 1040 } 1041 1042 *head_p = head; 1043 *tail_p = tail; 1044 } 1045 1046static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, 1047 CIPHER_ORDER **tail_p) 1048 { 1049 int max_strength_bits, i, *number_uses; 1050 CIPHER_ORDER *curr; 1051 1052 /* 1053 * This routine sorts the ciphers with descending strength. The sorting 1054 * must keep the pre-sorted sequence, so we apply the normal sorting 1055 * routine as '+' movement to the end of the list. 1056 */ 1057 max_strength_bits = 0; 1058 curr = *head_p; 1059 while (curr != NULL) 1060 { 1061 if (curr->active && 1062 (curr->cipher->strength_bits > max_strength_bits)) 1063 max_strength_bits = curr->cipher->strength_bits; 1064 curr = curr->next; 1065 } 1066 1067 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 1068 if (!number_uses) 1069 { 1070 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); 1071 return(0); 1072 } 1073 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 1074 1075 /* 1076 * Now find the strength_bits values actually used 1077 */ 1078 curr = *head_p; 1079 while (curr != NULL) 1080 { 1081 if (curr->active) 1082 number_uses[curr->cipher->strength_bits]++; 1083 curr = curr->next; 1084 } 1085 /* 1086 * Go through the list of used strength_bits values in descending 1087 * order. 1088 */ 1089 for (i = max_strength_bits; i >= 0; i--) 1090 if (number_uses[i] > 0) 1091 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p); 1092 1093 OPENSSL_free(number_uses); 1094 return(1); 1095 } 1096 1097static int ssl_cipher_process_rulestr(const char *rule_str, 1098 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p, 1099 const SSL_CIPHER **ca_list) 1100 { 1101 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength; 1102 const char *l, *buf; 1103 int j, multi, found, rule, retval, ok, buflen; 1104 unsigned long cipher_id = 0; 1105 char ch; 1106 1107 retval = 1; 1108 l = rule_str; 1109 for (;;) 1110 { 1111 ch = *l; 1112 1113 if (ch == '\0') 1114 break; /* done */ 1115 if (ch == '-') 1116 { rule = CIPHER_DEL; l++; } 1117 else if (ch == '+') 1118 { rule = CIPHER_ORD; l++; } 1119 else if (ch == '!') 1120 { rule = CIPHER_KILL; l++; } 1121 else if (ch == '@') 1122 { rule = CIPHER_SPECIAL; l++; } 1123 else 1124 { rule = CIPHER_ADD; } 1125 1126 if (ITEM_SEP(ch)) 1127 { 1128 l++; 1129 continue; 1130 } 1131 1132 alg_mkey = 0; 1133 alg_auth = 0; 1134 alg_enc = 0; 1135 alg_mac = 0; 1136 alg_ssl = 0; 1137 algo_strength = 0; 1138 1139 for (;;) 1140 { 1141 ch = *l; 1142 buf = l; 1143 buflen = 0; 1144#ifndef CHARSET_EBCDIC 1145 while ( ((ch >= 'A') && (ch <= 'Z')) || 1146 ((ch >= '0') && (ch <= '9')) || 1147 ((ch >= 'a') && (ch <= 'z')) || 1148 (ch == '-')) 1149#else 1150 while ( isalnum(ch) || (ch == '-')) 1151#endif 1152 { 1153 ch = *(++l); 1154 buflen++; 1155 } 1156 1157 if (buflen == 0) 1158 { 1159 /* 1160 * We hit something we cannot deal with, 1161 * it is no command or separator nor 1162 * alphanumeric, so we call this an error. 1163 */ 1164 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1165 SSL_R_INVALID_COMMAND); 1166 retval = found = 0; 1167 l++; 1168 break; 1169 } 1170 1171 if (rule == CIPHER_SPECIAL) 1172 { 1173 found = 0; /* unused -- avoid compiler warning */ 1174 break; /* special treatment */ 1175 } 1176 1177 /* check for multi-part specification */ 1178 if (ch == '+') 1179 { 1180 multi=1; 1181 l++; 1182 } 1183 else 1184 multi=0; 1185 1186 /* 1187 * Now search for the cipher alias in the ca_list. Be careful 1188 * with the strncmp, because the "buflen" limitation 1189 * will make the rule "ADH:SOME" and the cipher 1190 * "ADH-MY-CIPHER" look like a match for buflen=3. 1191 * So additionally check whether the cipher name found 1192 * has the correct length. We can save a strlen() call: 1193 * just checking for the '\0' at the right place is 1194 * sufficient, we have to strncmp() anyway. (We cannot 1195 * use strcmp(), because buf is not '\0' terminated.) 1196 */ 1197 j = found = 0; 1198 cipher_id = 0; 1199 while (ca_list[j]) 1200 { 1201 if (!strncmp(buf, ca_list[j]->name, buflen) && 1202 (ca_list[j]->name[buflen] == '\0')) 1203 { 1204 found = 1; 1205 break; 1206 } 1207 else 1208 j++; 1209 } 1210 1211 if (!found) 1212 break; /* ignore this entry */ 1213 1214 if (ca_list[j]->algorithm_mkey) 1215 { 1216 if (alg_mkey) 1217 { 1218 alg_mkey &= ca_list[j]->algorithm_mkey; 1219 if (!alg_mkey) { found = 0; break; } 1220 } 1221 else 1222 alg_mkey = ca_list[j]->algorithm_mkey; 1223 } 1224 1225 if (ca_list[j]->algorithm_auth) 1226 { 1227 if (alg_auth) 1228 { 1229 alg_auth &= ca_list[j]->algorithm_auth; 1230 if (!alg_auth) { found = 0; break; } 1231 } 1232 else 1233 alg_auth = ca_list[j]->algorithm_auth; 1234 } 1235 1236 if (ca_list[j]->algorithm_enc) 1237 { 1238 if (alg_enc) 1239 { 1240 alg_enc &= ca_list[j]->algorithm_enc; 1241 if (!alg_enc) { found = 0; break; } 1242 } 1243 else 1244 alg_enc = ca_list[j]->algorithm_enc; 1245 } 1246 1247 if (ca_list[j]->algorithm_mac) 1248 { 1249 if (alg_mac) 1250 { 1251 alg_mac &= ca_list[j]->algorithm_mac; 1252 if (!alg_mac) { found = 0; break; } 1253 } 1254 else 1255 alg_mac = ca_list[j]->algorithm_mac; 1256 } 1257 1258 if (ca_list[j]->algo_strength & SSL_EXP_MASK) 1259 { 1260 if (algo_strength & SSL_EXP_MASK) 1261 { 1262 algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK; 1263 if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; } 1264 } 1265 else 1266 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; 1267 } 1268 1269 if (ca_list[j]->algo_strength & SSL_STRONG_MASK) 1270 { 1271 if (algo_strength & SSL_STRONG_MASK) 1272 { 1273 algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK; 1274 if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; } 1275 } 1276 else 1277 algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK; 1278 } 1279 1280 if (ca_list[j]->valid) 1281 { 1282 /* explicit ciphersuite found; its protocol version 1283 * does not become part of the search pattern!*/ 1284 1285 cipher_id = ca_list[j]->id; 1286 } 1287 else 1288 { 1289 /* not an explicit ciphersuite; only in this case, the 1290 * protocol version is considered part of the search pattern */ 1291 1292 if (ca_list[j]->algorithm_ssl) 1293 { 1294 if (alg_ssl) 1295 { 1296 alg_ssl &= ca_list[j]->algorithm_ssl; 1297 if (!alg_ssl) { found = 0; break; } 1298 } 1299 else 1300 alg_ssl = ca_list[j]->algorithm_ssl; 1301 } 1302 } 1303 1304 if (!multi) break; 1305 } 1306 1307 /* 1308 * Ok, we have the rule, now apply it 1309 */ 1310 if (rule == CIPHER_SPECIAL) 1311 { /* special command */ 1312 ok = 0; 1313 if ((buflen == 8) && 1314 !strncmp(buf, "STRENGTH", 8)) 1315 ok = ssl_cipher_strength_sort(head_p, tail_p); 1316 else 1317 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1318 SSL_R_INVALID_COMMAND); 1319 if (ok == 0) 1320 retval = 0; 1321 /* 1322 * We do not support any "multi" options 1323 * together with "@", so throw away the 1324 * rest of the command, if any left, until 1325 * end or ':' is found. 1326 */ 1327 while ((*l != '\0') && !ITEM_SEP(*l)) 1328 l++; 1329 } 1330 else if (found) 1331 { 1332 ssl_cipher_apply_rule(cipher_id, 1333 alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, 1334 rule, -1, head_p, tail_p); 1335 } 1336 else 1337 { 1338 while ((*l != '\0') && !ITEM_SEP(*l)) 1339 l++; 1340 } 1341 if (*l == '\0') break; /* done */ 1342 } 1343 1344 return(retval); 1345 } 1346 1347STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, 1348 STACK_OF(SSL_CIPHER) **cipher_list, 1349 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 1350 const char *rule_str) 1351 { 1352 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 1353 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl; 1354 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 1355 const char *rule_p; 1356 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 1357 const SSL_CIPHER **ca_list = NULL; 1358 1359 /* 1360 * Return with error if nothing to do. 1361 */ 1362 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 1363 return NULL; 1364 1365 /* 1366 * To reduce the work to do we only want to process the compiled 1367 * in algorithms, so we first get the mask of disabled ciphers. 1368 */ 1369 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl); 1370 1371 /* 1372 * Now we have to collect the available ciphers from the compiled 1373 * in ciphers. We cannot get more than the number compiled in, so 1374 * it is used for allocation. 1375 */ 1376 num_of_ciphers = ssl_method->num_ciphers(); 1377#ifdef KSSL_DEBUG 1378 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); 1379#endif /* KSSL_DEBUG */ 1380 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 1381 if (co_list == NULL) 1382 { 1383 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1384 return(NULL); /* Failure */ 1385 } 1386 1387 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, 1388 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl, 1389 co_list, &head, &tail); 1390 1391 1392 /* Now arrange all ciphers by preference: */ 1393 1394 /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */ 1395 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1396 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1397 1398 /* AES is our preferred symmetric cipher */ 1399 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1400 1401 /* Temporarily enable everything else for sorting */ 1402 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1403 1404 /* Low priority for MD5 */ 1405 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail); 1406 1407 /* Move anonymous ciphers to the end. Usually, these will remain disabled. 1408 * (For applications that allow them, they aren't too bad, but we prefer 1409 * authenticated ciphers.) */ 1410 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1411 1412 /* Move ciphers without forward secrecy to the end */ 1413 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1414 /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */ 1415 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1416 ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1417 ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1418 1419 /* RC4 is sort-of broken -- move the the end */ 1420 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1421 1422 /* Now sort by symmetric encryption strength. The above ordering remains 1423 * in force within each class */ 1424 if (!ssl_cipher_strength_sort(&head, &tail)) 1425 { 1426 OPENSSL_free(co_list); 1427 return NULL; 1428 } 1429 1430 /* Now disable everything (maintaining the ordering!) */ 1431 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1432 1433 1434 /* 1435 * We also need cipher aliases for selecting based on the rule_str. 1436 * There might be two types of entries in the rule_str: 1) names 1437 * of ciphers themselves 2) aliases for groups of ciphers. 1438 * For 1) we need the available ciphers and for 2) the cipher 1439 * groups of cipher_aliases added together in one list (otherwise 1440 * we would be happy with just the cipher_aliases table). 1441 */ 1442 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 1443 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 1444 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); 1445 if (ca_list == NULL) 1446 { 1447 OPENSSL_free(co_list); 1448 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1449 return(NULL); /* Failure */ 1450 } 1451 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, 1452 disabled_mkey, disabled_auth, disabled_enc, 1453 disabled_mac, disabled_ssl, head); 1454 1455 /* 1456 * If the rule_string begins with DEFAULT, apply the default rule 1457 * before using the (possibly available) additional rules. 1458 */ 1459 ok = 1; 1460 rule_p = rule_str; 1461 if (strncmp(rule_str,"DEFAULT",7) == 0) 1462 { 1463 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 1464 &head, &tail, ca_list); 1465 rule_p += 7; 1466 if (*rule_p == ':') 1467 rule_p++; 1468 } 1469 1470 if (ok && (strlen(rule_p) > 0)) 1471 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list); 1472 1473 OPENSSL_free((void *)ca_list); /* Not needed anymore */ 1474 1475 if (!ok) 1476 { /* Rule processing failure */ 1477 OPENSSL_free(co_list); 1478 return(NULL); 1479 } 1480 1481 /* 1482 * Allocate new "cipherstack" for the result, return with error 1483 * if we cannot get one. 1484 */ 1485 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) 1486 { 1487 OPENSSL_free(co_list); 1488 return(NULL); 1489 } 1490 1491 /* 1492 * The cipher selection for the list is done. The ciphers are added 1493 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1494 */ 1495 for (curr = head; curr != NULL; curr = curr->next) 1496 { 1497#ifdef OPENSSL_FIPS 1498 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) 1499#else 1500 if (curr->active) 1501#endif 1502 { 1503 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1504#ifdef CIPHER_DEBUG 1505 printf("<%s>\n",curr->cipher->name); 1506#endif 1507 } 1508 } 1509 OPENSSL_free(co_list); /* Not needed any longer */ 1510 1511 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1512 if (tmp_cipher_list == NULL) 1513 { 1514 sk_SSL_CIPHER_free(cipherstack); 1515 return NULL; 1516 } 1517 if (*cipher_list != NULL) 1518 sk_SSL_CIPHER_free(*cipher_list); 1519 *cipher_list = cipherstack; 1520 if (*cipher_list_by_id != NULL) 1521 sk_SSL_CIPHER_free(*cipher_list_by_id); 1522 *cipher_list_by_id = tmp_cipher_list; 1523 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); 1524 1525 sk_SSL_CIPHER_sort(*cipher_list_by_id); 1526 return(cipherstack); 1527 } 1528 1529char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) 1530 { 1531 int is_export,pkl,kl; 1532 const char *ver,*exp_str; 1533 const char *kx,*au,*enc,*mac; 1534 unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2; 1535#ifdef KSSL_DEBUG 1536 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n"; 1537#else 1538 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1539#endif /* KSSL_DEBUG */ 1540 1541 alg_mkey = cipher->algorithm_mkey; 1542 alg_auth = cipher->algorithm_auth; 1543 alg_enc = cipher->algorithm_enc; 1544 alg_mac = cipher->algorithm_mac; 1545 alg_ssl = cipher->algorithm_ssl; 1546 1547 alg2=cipher->algorithm2; 1548 1549 is_export=SSL_C_IS_EXPORT(cipher); 1550 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1551 kl=SSL_C_EXPORT_KEYLENGTH(cipher); 1552 exp_str=is_export?" export":""; 1553 1554 if (alg_ssl & SSL_SSLV2) 1555 ver="SSLv2"; 1556 else if (alg_ssl & SSL_SSLV3) 1557 ver="SSLv3"; 1558 else if (alg_ssl & SSL_TLSV1_2) 1559 ver="TLSv1.2"; 1560 else 1561 ver="unknown"; 1562 1563 switch (alg_mkey) 1564 { 1565 case SSL_kRSA: 1566 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; 1567 break; 1568 case SSL_kDHr: 1569 kx="DH/RSA"; 1570 break; 1571 case SSL_kDHd: 1572 kx="DH/DSS"; 1573 break; 1574 case SSL_kKRB5: 1575 kx="KRB5"; 1576 break; 1577 case SSL_kEDH: 1578 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; 1579 break; 1580 case SSL_kECDHr: 1581 kx="ECDH/RSA"; 1582 break; 1583 case SSL_kECDHe: 1584 kx="ECDH/ECDSA"; 1585 break; 1586 case SSL_kEECDH: 1587 kx="ECDH"; 1588 break; 1589 case SSL_kPSK: 1590 kx="PSK"; 1591 break; 1592 case SSL_kSRP: 1593 kx="SRP"; 1594 break; 1595 default: 1596 kx="unknown"; 1597 } 1598 1599 switch (alg_auth) 1600 { 1601 case SSL_aRSA: 1602 au="RSA"; 1603 break; 1604 case SSL_aDSS: 1605 au="DSS"; 1606 break; 1607 case SSL_aDH: 1608 au="DH"; 1609 break; 1610 case SSL_aKRB5: 1611 au="KRB5"; 1612 break; 1613 case SSL_aECDH: 1614 au="ECDH"; 1615 break; 1616 case SSL_aNULL: 1617 au="None"; 1618 break; 1619 case SSL_aECDSA: 1620 au="ECDSA"; 1621 break; 1622 case SSL_aPSK: 1623 au="PSK"; 1624 break; 1625 default: 1626 au="unknown"; 1627 break; 1628 } 1629 1630 switch (alg_enc) 1631 { 1632 case SSL_DES: 1633 enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; 1634 break; 1635 case SSL_3DES: 1636 enc="3DES(168)"; 1637 break; 1638 case SSL_RC4: 1639 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") 1640 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); 1641 break; 1642 case SSL_RC2: 1643 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; 1644 break; 1645 case SSL_IDEA: 1646 enc="IDEA(128)"; 1647 break; 1648 case SSL_eNULL: 1649 enc="None"; 1650 break; 1651 case SSL_AES128: 1652 enc="AES(128)"; 1653 break; 1654 case SSL_AES256: 1655 enc="AES(256)"; 1656 break; 1657 case SSL_AES128GCM: 1658 enc="AESGCM(128)"; 1659 break; 1660 case SSL_AES256GCM: 1661 enc="AESGCM(256)"; 1662 break; 1663 case SSL_CAMELLIA128: 1664 enc="Camellia(128)"; 1665 break; 1666 case SSL_CAMELLIA256: 1667 enc="Camellia(256)"; 1668 break; 1669 case SSL_SEED: 1670 enc="SEED(128)"; 1671 break; 1672 default: 1673 enc="unknown"; 1674 break; 1675 } 1676 1677 switch (alg_mac) 1678 { 1679 case SSL_MD5: 1680 mac="MD5"; 1681 break; 1682 case SSL_SHA1: 1683 mac="SHA1"; 1684 break; 1685 case SSL_SHA256: 1686 mac="SHA256"; 1687 break; 1688 case SSL_SHA384: 1689 mac="SHA384"; 1690 break; 1691 case SSL_AEAD: 1692 mac="AEAD"; 1693 break; 1694 default: 1695 mac="unknown"; 1696 break; 1697 } 1698 1699 if (buf == NULL) 1700 { 1701 len=128; 1702 buf=OPENSSL_malloc(len); 1703 if (buf == NULL) return("OPENSSL_malloc Error"); 1704 } 1705 else if (len < 128) 1706 return("Buffer too small"); 1707 1708#ifdef KSSL_DEBUG 1709 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl); 1710#else 1711 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); 1712#endif /* KSSL_DEBUG */ 1713 return(buf); 1714 } 1715 1716char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1717 { 1718 int i; 1719 1720 if (c == NULL) return("(NONE)"); 1721 i=(int)(c->id>>24L); 1722 if (i == 3) 1723 return("TLSv1/SSLv3"); 1724 else if (i == 2) 1725 return("SSLv2"); 1726 else 1727 return("unknown"); 1728 } 1729 1730/* return the actual cipher being used */ 1731const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1732 { 1733 if (c != NULL) 1734 return(c->name); 1735 return("(NONE)"); 1736 } 1737 1738/* number of bits for symmetric cipher */ 1739int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1740 { 1741 int ret=0; 1742 1743 if (c != NULL) 1744 { 1745 if (alg_bits != NULL) *alg_bits = c->alg_bits; 1746 ret = c->strength_bits; 1747 } 1748 return(ret); 1749 } 1750 1751unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c) 1752 { 1753 return c->id; 1754 } 1755 1756/* return string version of key exchange algorithm */ 1757const char* SSL_CIPHER_authentication_method(const SSL_CIPHER* cipher) 1758 { 1759 switch (cipher->algorithm_mkey) 1760 { 1761 case SSL_kRSA: 1762 return SSL_TXT_RSA; 1763 case SSL_kDHr: 1764 return SSL_TXT_DH "_" SSL_TXT_RSA; 1765 case SSL_kDHd: 1766 return SSL_TXT_DH "_" SSL_TXT_DSS; 1767 case SSL_kEDH: 1768 switch (cipher->algorithm_auth) 1769 { 1770 case SSL_aDSS: 1771 return "DHE_" SSL_TXT_DSS; 1772 case SSL_aRSA: 1773 return "DHE_" SSL_TXT_RSA; 1774 case SSL_aNULL: 1775 return SSL_TXT_DH "_anon"; 1776 default: 1777 return "UNKNOWN"; 1778 } 1779 case SSL_kKRB5: 1780 return SSL_TXT_KRB5; 1781 case SSL_kECDHr: 1782 return SSL_TXT_ECDH "_" SSL_TXT_RSA; 1783 case SSL_kECDHe: 1784 return SSL_TXT_ECDH "_" SSL_TXT_ECDSA; 1785 case SSL_kEECDH: 1786 switch (cipher->algorithm_auth) 1787 { 1788 case SSL_aECDSA: 1789 return "ECDHE_" SSL_TXT_ECDSA; 1790 case SSL_aRSA: 1791 return "ECDHE_" SSL_TXT_RSA; 1792 case SSL_aNULL: 1793 return SSL_TXT_ECDH "_anon"; 1794 default: 1795 return "UNKNOWN"; 1796 } 1797 default: 1798 return "UNKNOWN"; 1799 } 1800 } 1801 1802SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1803 { 1804 SSL_COMP *ctmp; 1805 int i,nn; 1806 1807 if ((n == 0) || (sk == NULL)) return(NULL); 1808 nn=sk_SSL_COMP_num(sk); 1809 for (i=0; i<nn; i++) 1810 { 1811 ctmp=sk_SSL_COMP_value(sk,i); 1812 if (ctmp->id == n) 1813 return(ctmp); 1814 } 1815 return(NULL); 1816 } 1817 1818#ifdef OPENSSL_NO_COMP 1819void *SSL_COMP_get_compression_methods(void) 1820 { 1821 return NULL; 1822 } 1823int SSL_COMP_add_compression_method(int id, void *cm) 1824 { 1825 return 1; 1826 } 1827 1828const char *SSL_COMP_get_name(const void *comp) 1829 { 1830 return NULL; 1831 } 1832#else 1833STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1834 { 1835 load_builtin_compressions(); 1836 return(ssl_comp_methods); 1837 } 1838 1839int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1840 { 1841 SSL_COMP *comp; 1842 1843 if (cm == NULL || cm->type == NID_undef) 1844 return 1; 1845 1846 /* According to draft-ietf-tls-compression-04.txt, the 1847 compression number ranges should be the following: 1848 1849 0 to 63: methods defined by the IETF 1850 64 to 192: external party methods assigned by IANA 1851 193 to 255: reserved for private use */ 1852 if (id < 193 || id > 255) 1853 { 1854 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1855 return 0; 1856 } 1857 1858 MemCheck_off(); 1859 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1860 comp->id=id; 1861 comp->method=cm; 1862 load_builtin_compressions(); 1863 if (ssl_comp_methods 1864 && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0) 1865 { 1866 OPENSSL_free(comp); 1867 MemCheck_on(); 1868 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); 1869 return(1); 1870 } 1871 else if ((ssl_comp_methods == NULL) 1872 || !sk_SSL_COMP_push(ssl_comp_methods,comp)) 1873 { 1874 OPENSSL_free(comp); 1875 MemCheck_on(); 1876 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); 1877 return(1); 1878 } 1879 else 1880 { 1881 MemCheck_on(); 1882 return(0); 1883 } 1884 } 1885 1886const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1887 { 1888 if (comp) 1889 return comp->name; 1890 return NULL; 1891 } 1892 1893#endif 1894