ssl_ciph.c revision 271304
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 {0,SSL_TXT_aSRP,0, 0,SSL_aSRP, 0,0,0,0,0,0,0}, 274 275 /* aliases combining key exchange and server authentication */ 276 {0,SSL_TXT_EDH,0, SSL_kEDH,~SSL_aNULL,0,0,0,0,0,0,0}, 277 {0,SSL_TXT_EECDH,0, SSL_kEECDH,~SSL_aNULL,0,0,0,0,0,0,0}, 278 {0,SSL_TXT_NULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0}, 279 {0,SSL_TXT_KRB5,0, SSL_kKRB5,SSL_aKRB5,0,0,0,0,0,0,0}, 280 {0,SSL_TXT_RSA,0, SSL_kRSA,SSL_aRSA,0,0,0,0,0,0,0}, 281 {0,SSL_TXT_ADH,0, SSL_kEDH,SSL_aNULL,0,0,0,0,0,0,0}, 282 {0,SSL_TXT_AECDH,0, SSL_kEECDH,SSL_aNULL,0,0,0,0,0,0,0}, 283 {0,SSL_TXT_PSK,0, SSL_kPSK,SSL_aPSK,0,0,0,0,0,0,0}, 284 {0,SSL_TXT_SRP,0, SSL_kSRP,0,0,0,0,0,0,0,0}, 285 286 287 /* symmetric encryption aliases */ 288 {0,SSL_TXT_DES,0, 0,0,SSL_DES, 0,0,0,0,0,0}, 289 {0,SSL_TXT_3DES,0, 0,0,SSL_3DES, 0,0,0,0,0,0}, 290 {0,SSL_TXT_RC4,0, 0,0,SSL_RC4, 0,0,0,0,0,0}, 291 {0,SSL_TXT_RC2,0, 0,0,SSL_RC2, 0,0,0,0,0,0}, 292 {0,SSL_TXT_IDEA,0, 0,0,SSL_IDEA, 0,0,0,0,0,0}, 293 {0,SSL_TXT_SEED,0, 0,0,SSL_SEED, 0,0,0,0,0,0}, 294 {0,SSL_TXT_eNULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0}, 295 {0,SSL_TXT_AES128,0, 0,0,SSL_AES128|SSL_AES128GCM,0,0,0,0,0,0}, 296 {0,SSL_TXT_AES256,0, 0,0,SSL_AES256|SSL_AES256GCM,0,0,0,0,0,0}, 297 {0,SSL_TXT_AES,0, 0,0,SSL_AES,0,0,0,0,0,0}, 298 {0,SSL_TXT_AES_GCM,0, 0,0,SSL_AES128GCM|SSL_AES256GCM,0,0,0,0,0,0}, 299 {0,SSL_TXT_CAMELLIA128,0,0,0,SSL_CAMELLIA128,0,0,0,0,0,0}, 300 {0,SSL_TXT_CAMELLIA256,0,0,0,SSL_CAMELLIA256,0,0,0,0,0,0}, 301 {0,SSL_TXT_CAMELLIA ,0,0,0,SSL_CAMELLIA128|SSL_CAMELLIA256,0,0,0,0,0,0}, 302 303 /* MAC aliases */ 304 {0,SSL_TXT_MD5,0, 0,0,0,SSL_MD5, 0,0,0,0,0}, 305 {0,SSL_TXT_SHA1,0, 0,0,0,SSL_SHA1, 0,0,0,0,0}, 306 {0,SSL_TXT_SHA,0, 0,0,0,SSL_SHA1, 0,0,0,0,0}, 307 {0,SSL_TXT_GOST94,0, 0,0,0,SSL_GOST94, 0,0,0,0,0}, 308 {0,SSL_TXT_GOST89MAC,0, 0,0,0,SSL_GOST89MAC, 0,0,0,0,0}, 309 {0,SSL_TXT_SHA256,0, 0,0,0,SSL_SHA256, 0,0,0,0,0}, 310 {0,SSL_TXT_SHA384,0, 0,0,0,SSL_SHA384, 0,0,0,0,0}, 311 312 /* protocol version aliases */ 313 {0,SSL_TXT_SSLV2,0, 0,0,0,0,SSL_SSLV2, 0,0,0,0}, 314 {0,SSL_TXT_SSLV3,0, 0,0,0,0,SSL_SSLV3, 0,0,0,0}, 315 {0,SSL_TXT_TLSV1,0, 0,0,0,0,SSL_TLSV1, 0,0,0,0}, 316 {0,SSL_TXT_TLSV1_2,0, 0,0,0,0,SSL_TLSV1_2, 0,0,0,0}, 317 318 /* export flag */ 319 {0,SSL_TXT_EXP,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, 320 {0,SSL_TXT_EXPORT,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, 321 322 /* strength classes */ 323 {0,SSL_TXT_EXP40,0, 0,0,0,0,0,SSL_EXP40, 0,0,0}, 324 {0,SSL_TXT_EXP56,0, 0,0,0,0,0,SSL_EXP56, 0,0,0}, 325 {0,SSL_TXT_LOW,0, 0,0,0,0,0,SSL_LOW, 0,0,0}, 326 {0,SSL_TXT_MEDIUM,0, 0,0,0,0,0,SSL_MEDIUM,0,0,0}, 327 {0,SSL_TXT_HIGH,0, 0,0,0,0,0,SSL_HIGH, 0,0,0}, 328 /* FIPS 140-2 approved ciphersuite */ 329 {0,SSL_TXT_FIPS,0, 0,0,~SSL_eNULL,0,0,SSL_FIPS, 0,0,0}, 330 }; 331/* Search for public key algorithm with given name and 332 * return its pkey_id if it is available. Otherwise return 0 333 */ 334#ifdef OPENSSL_NO_ENGINE 335 336static int get_optional_pkey_id(const char *pkey_name) 337 { 338 const EVP_PKEY_ASN1_METHOD *ameth; 339 int pkey_id=0; 340 ameth = EVP_PKEY_asn1_find_str(NULL,pkey_name,-1); 341 if (ameth) 342 { 343 EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); 344 } 345 return pkey_id; 346 } 347 348#else 349 350static int get_optional_pkey_id(const char *pkey_name) 351 { 352 const EVP_PKEY_ASN1_METHOD *ameth; 353 ENGINE *tmpeng = NULL; 354 int pkey_id=0; 355 ameth = EVP_PKEY_asn1_find_str(&tmpeng,pkey_name,-1); 356 if (ameth) 357 { 358 EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); 359 } 360 if (tmpeng) ENGINE_finish(tmpeng); 361 return pkey_id; 362 } 363 364#endif 365 366void ssl_load_ciphers(void) 367 { 368 ssl_cipher_methods[SSL_ENC_DES_IDX]= 369 EVP_get_cipherbyname(SN_des_cbc); 370 ssl_cipher_methods[SSL_ENC_3DES_IDX]= 371 EVP_get_cipherbyname(SN_des_ede3_cbc); 372 ssl_cipher_methods[SSL_ENC_RC4_IDX]= 373 EVP_get_cipherbyname(SN_rc4); 374 ssl_cipher_methods[SSL_ENC_RC2_IDX]= 375 EVP_get_cipherbyname(SN_rc2_cbc); 376#ifndef OPENSSL_NO_IDEA 377 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= 378 EVP_get_cipherbyname(SN_idea_cbc); 379#else 380 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL; 381#endif 382 ssl_cipher_methods[SSL_ENC_AES128_IDX]= 383 EVP_get_cipherbyname(SN_aes_128_cbc); 384 ssl_cipher_methods[SSL_ENC_AES256_IDX]= 385 EVP_get_cipherbyname(SN_aes_256_cbc); 386 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= 387 EVP_get_cipherbyname(SN_camellia_128_cbc); 388 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= 389 EVP_get_cipherbyname(SN_camellia_256_cbc); 390 ssl_cipher_methods[SSL_ENC_GOST89_IDX]= 391 EVP_get_cipherbyname(SN_gost89_cnt); 392 ssl_cipher_methods[SSL_ENC_SEED_IDX]= 393 EVP_get_cipherbyname(SN_seed_cbc); 394 395 ssl_cipher_methods[SSL_ENC_AES128GCM_IDX]= 396 EVP_get_cipherbyname(SN_aes_128_gcm); 397 ssl_cipher_methods[SSL_ENC_AES256GCM_IDX]= 398 EVP_get_cipherbyname(SN_aes_256_gcm); 399 400 ssl_digest_methods[SSL_MD_MD5_IDX]= 401 EVP_get_digestbyname(SN_md5); 402 ssl_mac_secret_size[SSL_MD_MD5_IDX]= 403 EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]); 404 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0); 405 ssl_digest_methods[SSL_MD_SHA1_IDX]= 406 EVP_get_digestbyname(SN_sha1); 407 ssl_mac_secret_size[SSL_MD_SHA1_IDX]= 408 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]); 409 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0); 410 ssl_digest_methods[SSL_MD_GOST94_IDX]= 411 EVP_get_digestbyname(SN_id_GostR3411_94); 412 if (ssl_digest_methods[SSL_MD_GOST94_IDX]) 413 { 414 ssl_mac_secret_size[SSL_MD_GOST94_IDX]= 415 EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]); 416 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0); 417 } 418 ssl_digest_methods[SSL_MD_GOST89MAC_IDX]= 419 EVP_get_digestbyname(SN_id_Gost28147_89_MAC); 420 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); 421 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) { 422 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX]=32; 423 } 424 425 ssl_digest_methods[SSL_MD_SHA256_IDX]= 426 EVP_get_digestbyname(SN_sha256); 427 ssl_mac_secret_size[SSL_MD_SHA256_IDX]= 428 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]); 429 ssl_digest_methods[SSL_MD_SHA384_IDX]= 430 EVP_get_digestbyname(SN_sha384); 431 ssl_mac_secret_size[SSL_MD_SHA384_IDX]= 432 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]); 433 } 434#ifndef OPENSSL_NO_COMP 435 436static int sk_comp_cmp(const SSL_COMP * const *a, 437 const SSL_COMP * const *b) 438 { 439 return((*a)->id-(*b)->id); 440 } 441 442static void load_builtin_compressions(void) 443 { 444 int got_write_lock = 0; 445 446 CRYPTO_r_lock(CRYPTO_LOCK_SSL); 447 if (ssl_comp_methods == NULL) 448 { 449 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 450 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 451 got_write_lock = 1; 452 453 if (ssl_comp_methods == NULL) 454 { 455 SSL_COMP *comp = NULL; 456 457 MemCheck_off(); 458 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); 459 if (ssl_comp_methods != NULL) 460 { 461 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 462 if (comp != NULL) 463 { 464 comp->method=COMP_zlib(); 465 if (comp->method 466 && comp->method->type == NID_undef) 467 OPENSSL_free(comp); 468 else 469 { 470 comp->id=SSL_COMP_ZLIB_IDX; 471 comp->name=comp->method->name; 472 sk_SSL_COMP_push(ssl_comp_methods,comp); 473 } 474 } 475 sk_SSL_COMP_sort(ssl_comp_methods); 476 } 477 MemCheck_on(); 478 } 479 } 480 481 if (got_write_lock) 482 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 483 else 484 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 485 } 486#endif 487 488int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 489 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size,SSL_COMP **comp) 490 { 491 int i; 492 const SSL_CIPHER *c; 493 494 c=s->cipher; 495 if (c == NULL) return(0); 496 if (comp != NULL) 497 { 498 SSL_COMP ctmp; 499#ifndef OPENSSL_NO_COMP 500 load_builtin_compressions(); 501#endif 502 503 *comp=NULL; 504 ctmp.id=s->compress_meth; 505 if (ssl_comp_methods != NULL) 506 { 507 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); 508 if (i >= 0) 509 *comp=sk_SSL_COMP_value(ssl_comp_methods,i); 510 else 511 *comp=NULL; 512 } 513 } 514 515 if ((enc == NULL) || (md == NULL)) return(0); 516 517 switch (c->algorithm_enc) 518 { 519 case SSL_DES: 520 i=SSL_ENC_DES_IDX; 521 break; 522 case SSL_3DES: 523 i=SSL_ENC_3DES_IDX; 524 break; 525 case SSL_RC4: 526 i=SSL_ENC_RC4_IDX; 527 break; 528 case SSL_RC2: 529 i=SSL_ENC_RC2_IDX; 530 break; 531 case SSL_IDEA: 532 i=SSL_ENC_IDEA_IDX; 533 break; 534 case SSL_eNULL: 535 i=SSL_ENC_NULL_IDX; 536 break; 537 case SSL_AES128: 538 i=SSL_ENC_AES128_IDX; 539 break; 540 case SSL_AES256: 541 i=SSL_ENC_AES256_IDX; 542 break; 543 case SSL_CAMELLIA128: 544 i=SSL_ENC_CAMELLIA128_IDX; 545 break; 546 case SSL_CAMELLIA256: 547 i=SSL_ENC_CAMELLIA256_IDX; 548 break; 549 case SSL_eGOST2814789CNT: 550 i=SSL_ENC_GOST89_IDX; 551 break; 552 case SSL_SEED: 553 i=SSL_ENC_SEED_IDX; 554 break; 555 case SSL_AES128GCM: 556 i=SSL_ENC_AES128GCM_IDX; 557 break; 558 case SSL_AES256GCM: 559 i=SSL_ENC_AES256GCM_IDX; 560 break; 561 default: 562 i= -1; 563 break; 564 } 565 566 if ((i < 0) || (i > SSL_ENC_NUM_IDX)) 567 *enc=NULL; 568 else 569 { 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 { 578 case SSL_MD5: 579 i=SSL_MD_MD5_IDX; 580 break; 581 case SSL_SHA1: 582 i=SSL_MD_SHA1_IDX; 583 break; 584 case SSL_SHA256: 585 i=SSL_MD_SHA256_IDX; 586 break; 587 case SSL_SHA384: 588 i=SSL_MD_SHA384_IDX; 589 break; 590 case SSL_GOST94: 591 i = SSL_MD_GOST94_IDX; 592 break; 593 case SSL_GOST89MAC: 594 i = SSL_MD_GOST89MAC_IDX; 595 break; 596 default: 597 i= -1; 598 break; 599 } 600 if ((i < 0) || (i > SSL_MD_NUM_IDX)) 601 { 602 *md=NULL; 603 if (mac_pkey_type!=NULL) *mac_pkey_type = NID_undef; 604 if (mac_secret_size!=NULL) *mac_secret_size = 0; 605 if (c->algorithm_mac == SSL_AEAD) 606 mac_pkey_type = NULL; 607 } 608 else 609 { 610 *md=ssl_digest_methods[i]; 611 if (mac_pkey_type!=NULL) *mac_pkey_type = ssl_mac_pkey_id[i]; 612 if (mac_secret_size!=NULL) *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 { 619 const EVP_CIPHER *evp; 620 621 if (s->ssl_version>>8 != TLS1_VERSION_MAJOR || 622 s->ssl_version < TLS1_VERSION) 623 return 1; 624 625#ifdef OPENSSL_FIPS 626 if (FIPS_mode()) 627 return 1; 628#endif 629 630 if (c->algorithm_enc == SSL_RC4 && 631 c->algorithm_mac == SSL_MD5 && 632 (evp=EVP_get_cipherbyname("RC4-HMAC-MD5"))) 633 *enc = evp, *md = NULL; 634 else if (c->algorithm_enc == SSL_AES128 && 635 c->algorithm_mac == SSL_SHA1 && 636 (evp=EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1"))) 637 *enc = evp, *md = NULL; 638 else if (c->algorithm_enc == SSL_AES256 && 639 c->algorithm_mac == SSL_SHA1 && 640 (evp=EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1"))) 641 *enc = evp, *md = NULL; 642 return(1); 643 } 644 else 645 return(0); 646 } 647 648int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md) 649{ 650 if (idx <0||idx>=SSL_MD_NUM_IDX) 651 { 652 return 0; 653 } 654 *mask = ssl_handshake_digest_flag[idx]; 655 if (*mask) 656 *md = ssl_digest_methods[idx]; 657 else 658 *md = NULL; 659 return 1; 660} 661 662#define ITEM_SEP(a) \ 663 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) 664 665static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, 666 CIPHER_ORDER **tail) 667 { 668 if (curr == *tail) return; 669 if (curr == *head) 670 *head=curr->next; 671 if (curr->prev != NULL) 672 curr->prev->next=curr->next; 673 if (curr->next != NULL) 674 curr->next->prev=curr->prev; 675 (*tail)->next=curr; 676 curr->prev= *tail; 677 curr->next=NULL; 678 *tail=curr; 679 } 680 681static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, 682 CIPHER_ORDER **tail) 683 { 684 if (curr == *head) return; 685 if (curr == *tail) 686 *tail=curr->prev; 687 if (curr->next != NULL) 688 curr->next->prev=curr->prev; 689 if (curr->prev != NULL) 690 curr->prev->next=curr->next; 691 (*head)->prev=curr; 692 curr->next= *head; 693 curr->prev=NULL; 694 *head=curr; 695 } 696 697static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl) 698 { 699 *mkey = 0; 700 *auth = 0; 701 *enc = 0; 702 *mac = 0; 703 *ssl = 0; 704 705#ifdef OPENSSL_NO_RSA 706 *mkey |= SSL_kRSA; 707 *auth |= SSL_aRSA; 708#endif 709#ifdef OPENSSL_NO_DSA 710 *auth |= SSL_aDSS; 711#endif 712 *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */ 713 *auth |= SSL_aDH; 714#ifdef OPENSSL_NO_DH 715 *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH; 716 *auth |= SSL_aDH; 717#endif 718#ifdef OPENSSL_NO_KRB5 719 *mkey |= SSL_kKRB5; 720 *auth |= SSL_aKRB5; 721#endif 722#ifdef OPENSSL_NO_ECDSA 723 *auth |= SSL_aECDSA; 724#endif 725#ifdef OPENSSL_NO_ECDH 726 *mkey |= SSL_kECDHe|SSL_kECDHr; 727 *auth |= SSL_aECDH; 728#endif 729#ifdef OPENSSL_NO_PSK 730 *mkey |= SSL_kPSK; 731 *auth |= SSL_aPSK; 732#endif 733#ifdef OPENSSL_NO_SRP 734 *mkey |= SSL_kSRP; 735#endif 736 /* Check for presence of GOST 34.10 algorithms, and if they 737 * do not present, disable appropriate auth and key exchange */ 738 if (!get_optional_pkey_id("gost94")) { 739 *auth |= SSL_aGOST94; 740 } 741 if (!get_optional_pkey_id("gost2001")) { 742 *auth |= SSL_aGOST01; 743 } 744 /* Disable GOST key exchange if no GOST signature algs are available * */ 745 if ((*auth & (SSL_aGOST94|SSL_aGOST01)) == (SSL_aGOST94|SSL_aGOST01)) { 746 *mkey |= SSL_kGOST; 747 } 748#ifdef SSL_FORBID_ENULL 749 *enc |= SSL_eNULL; 750#endif 751 752 753 754 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; 755 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; 756 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; 757 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; 758 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; 759 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0; 760 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0; 761 *enc |= (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] == NULL) ? SSL_AES128GCM:0; 762 *enc |= (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] == NULL) ? SSL_AES256GCM:0; 763 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0; 764 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0; 765 *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0; 766 *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; 767 768 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; 769 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; 770 *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256:0; 771 *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384:0; 772 *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94:0; 773 *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef)? SSL_GOST89MAC:0; 774 775 } 776 777static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, 778 int num_of_ciphers, 779 unsigned long disabled_mkey, unsigned long disabled_auth, 780 unsigned long disabled_enc, unsigned long disabled_mac, 781 unsigned long disabled_ssl, 782 CIPHER_ORDER *co_list, 783 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 784 { 785 int i, co_list_num; 786 const SSL_CIPHER *c; 787 788 /* 789 * We have num_of_ciphers descriptions compiled in, depending on the 790 * method selected (SSLv2 and/or SSLv3, TLSv1 etc). 791 * These will later be sorted in a linked list with at most num 792 * entries. 793 */ 794 795 /* Get the initial list of ciphers */ 796 co_list_num = 0; /* actual count of ciphers */ 797 for (i = 0; i < num_of_ciphers; i++) 798 { 799 c = ssl_method->get_cipher(i); 800 /* drop those that use any of that is not available */ 801 if ((c != NULL) && c->valid && 802#ifdef OPENSSL_FIPS 803 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) && 804#endif 805 !(c->algorithm_mkey & disabled_mkey) && 806 !(c->algorithm_auth & disabled_auth) && 807 !(c->algorithm_enc & disabled_enc) && 808 !(c->algorithm_mac & disabled_mac) && 809 !(c->algorithm_ssl & disabled_ssl)) 810 { 811 co_list[co_list_num].cipher = c; 812 co_list[co_list_num].next = NULL; 813 co_list[co_list_num].prev = NULL; 814 co_list[co_list_num].active = 0; 815 co_list_num++; 816#ifdef KSSL_DEBUG 817 printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth); 818#endif /* KSSL_DEBUG */ 819 /* 820 if (!sk_push(ca_list,(char *)c)) goto err; 821 */ 822 } 823 } 824 825 /* 826 * Prepare linked list from list entries 827 */ 828 if (co_list_num > 0) 829 { 830 co_list[0].prev = NULL; 831 832 if (co_list_num > 1) 833 { 834 co_list[0].next = &co_list[1]; 835 836 for (i = 1; i < co_list_num - 1; i++) 837 { 838 co_list[i].prev = &co_list[i - 1]; 839 co_list[i].next = &co_list[i + 1]; 840 } 841 842 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; 843 } 844 845 co_list[co_list_num - 1].next = NULL; 846 847 *head_p = &co_list[0]; 848 *tail_p = &co_list[co_list_num - 1]; 849 } 850 } 851 852static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, 853 int num_of_group_aliases, 854 unsigned long disabled_mkey, unsigned long disabled_auth, 855 unsigned long disabled_enc, unsigned long disabled_mac, 856 unsigned long disabled_ssl, 857 CIPHER_ORDER *head) 858 { 859 CIPHER_ORDER *ciph_curr; 860 const SSL_CIPHER **ca_curr; 861 int i; 862 unsigned long mask_mkey = ~disabled_mkey; 863 unsigned long mask_auth = ~disabled_auth; 864 unsigned long mask_enc = ~disabled_enc; 865 unsigned long mask_mac = ~disabled_mac; 866 unsigned long mask_ssl = ~disabled_ssl; 867 868 /* 869 * First, add the real ciphers as already collected 870 */ 871 ciph_curr = head; 872 ca_curr = ca_list; 873 while (ciph_curr != NULL) 874 { 875 *ca_curr = ciph_curr->cipher; 876 ca_curr++; 877 ciph_curr = ciph_curr->next; 878 } 879 880 /* 881 * Now we add the available ones from the cipher_aliases[] table. 882 * They represent either one or more algorithms, some of which 883 * in any affected category must be supported (set in enabled_mask), 884 * or represent a cipher strength value (will be added in any case because algorithms=0). 885 */ 886 for (i = 0; i < num_of_group_aliases; i++) 887 { 888 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey; 889 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth; 890 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc; 891 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac; 892 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl; 893 894 if (algorithm_mkey) 895 if ((algorithm_mkey & mask_mkey) == 0) 896 continue; 897 898 if (algorithm_auth) 899 if ((algorithm_auth & mask_auth) == 0) 900 continue; 901 902 if (algorithm_enc) 903 if ((algorithm_enc & mask_enc) == 0) 904 continue; 905 906 if (algorithm_mac) 907 if ((algorithm_mac & mask_mac) == 0) 908 continue; 909 910 if (algorithm_ssl) 911 if ((algorithm_ssl & mask_ssl) == 0) 912 continue; 913 914 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); 915 ca_curr++; 916 } 917 918 *ca_curr = NULL; /* end of list */ 919 } 920 921static void ssl_cipher_apply_rule(unsigned long cipher_id, 922 unsigned long alg_mkey, unsigned long alg_auth, 923 unsigned long alg_enc, unsigned long alg_mac, 924 unsigned long alg_ssl, 925 unsigned long algo_strength, 926 int rule, int strength_bits, 927 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 928 { 929 CIPHER_ORDER *head, *tail, *curr, *curr2, *last; 930 const SSL_CIPHER *cp; 931 int reverse = 0; 932 933#ifdef CIPHER_DEBUG 934 printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n", 935 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits); 936#endif 937 938 if (rule == CIPHER_DEL) 939 reverse = 1; /* needed to maintain sorting between currently deleted ciphers */ 940 941 head = *head_p; 942 tail = *tail_p; 943 944 if (reverse) 945 { 946 curr = tail; 947 last = head; 948 } 949 else 950 { 951 curr = head; 952 last = tail; 953 } 954 955 curr2 = curr; 956 for (;;) 957 { 958 if ((curr == NULL) || (curr == last)) break; 959 curr = curr2; 960 curr2 = reverse ? curr->prev : curr->next; 961 962 cp = curr->cipher; 963 964 /* 965 * Selection criteria is either the value of strength_bits 966 * or the algorithms used. 967 */ 968 if (strength_bits >= 0) 969 { 970 if (strength_bits != cp->strength_bits) 971 continue; 972 } 973 else 974 { 975#ifdef CIPHER_DEBUG 976 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); 977#endif 978 979 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) 980 continue; 981 if (alg_auth && !(alg_auth & cp->algorithm_auth)) 982 continue; 983 if (alg_enc && !(alg_enc & cp->algorithm_enc)) 984 continue; 985 if (alg_mac && !(alg_mac & cp->algorithm_mac)) 986 continue; 987 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl)) 988 continue; 989 if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength)) 990 continue; 991 if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) 992 continue; 993 } 994 995#ifdef CIPHER_DEBUG 996 printf("Action = %d\n", rule); 997#endif 998 999 /* add the cipher if it has not been added yet. */ 1000 if (rule == CIPHER_ADD) 1001 { 1002 /* reverse == 0 */ 1003 if (!curr->active) 1004 { 1005 ll_append_tail(&head, curr, &tail); 1006 curr->active = 1; 1007 } 1008 } 1009 /* Move the added cipher to this location */ 1010 else if (rule == CIPHER_ORD) 1011 { 1012 /* reverse == 0 */ 1013 if (curr->active) 1014 { 1015 ll_append_tail(&head, curr, &tail); 1016 } 1017 } 1018 else if (rule == CIPHER_DEL) 1019 { 1020 /* reverse == 1 */ 1021 if (curr->active) 1022 { 1023 /* most recently deleted ciphersuites get best positions 1024 * for any future CIPHER_ADD (note that the CIPHER_DEL loop 1025 * works in reverse to maintain the order) */ 1026 ll_append_head(&head, curr, &tail); 1027 curr->active = 0; 1028 } 1029 } 1030 else if (rule == CIPHER_KILL) 1031 { 1032 /* reverse == 0 */ 1033 if (head == curr) 1034 head = curr->next; 1035 else 1036 curr->prev->next = curr->next; 1037 if (tail == curr) 1038 tail = curr->prev; 1039 curr->active = 0; 1040 if (curr->next != NULL) 1041 curr->next->prev = curr->prev; 1042 if (curr->prev != NULL) 1043 curr->prev->next = curr->next; 1044 curr->next = NULL; 1045 curr->prev = NULL; 1046 } 1047 } 1048 1049 *head_p = head; 1050 *tail_p = tail; 1051 } 1052 1053static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, 1054 CIPHER_ORDER **tail_p) 1055 { 1056 int max_strength_bits, i, *number_uses; 1057 CIPHER_ORDER *curr; 1058 1059 /* 1060 * This routine sorts the ciphers with descending strength. The sorting 1061 * must keep the pre-sorted sequence, so we apply the normal sorting 1062 * routine as '+' movement to the end of the list. 1063 */ 1064 max_strength_bits = 0; 1065 curr = *head_p; 1066 while (curr != NULL) 1067 { 1068 if (curr->active && 1069 (curr->cipher->strength_bits > max_strength_bits)) 1070 max_strength_bits = curr->cipher->strength_bits; 1071 curr = curr->next; 1072 } 1073 1074 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 1075 if (!number_uses) 1076 { 1077 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); 1078 return(0); 1079 } 1080 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 1081 1082 /* 1083 * Now find the strength_bits values actually used 1084 */ 1085 curr = *head_p; 1086 while (curr != NULL) 1087 { 1088 if (curr->active) 1089 number_uses[curr->cipher->strength_bits]++; 1090 curr = curr->next; 1091 } 1092 /* 1093 * Go through the list of used strength_bits values in descending 1094 * order. 1095 */ 1096 for (i = max_strength_bits; i >= 0; i--) 1097 if (number_uses[i] > 0) 1098 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p); 1099 1100 OPENSSL_free(number_uses); 1101 return(1); 1102 } 1103 1104static int ssl_cipher_process_rulestr(const char *rule_str, 1105 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p, 1106 const SSL_CIPHER **ca_list) 1107 { 1108 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength; 1109 const char *l, *buf; 1110 int j, multi, found, rule, retval, ok, buflen; 1111 unsigned long cipher_id = 0; 1112 char ch; 1113 1114 retval = 1; 1115 l = rule_str; 1116 for (;;) 1117 { 1118 ch = *l; 1119 1120 if (ch == '\0') 1121 break; /* done */ 1122 if (ch == '-') 1123 { rule = CIPHER_DEL; l++; } 1124 else if (ch == '+') 1125 { rule = CIPHER_ORD; l++; } 1126 else if (ch == '!') 1127 { rule = CIPHER_KILL; l++; } 1128 else if (ch == '@') 1129 { rule = CIPHER_SPECIAL; l++; } 1130 else 1131 { rule = CIPHER_ADD; } 1132 1133 if (ITEM_SEP(ch)) 1134 { 1135 l++; 1136 continue; 1137 } 1138 1139 alg_mkey = 0; 1140 alg_auth = 0; 1141 alg_enc = 0; 1142 alg_mac = 0; 1143 alg_ssl = 0; 1144 algo_strength = 0; 1145 1146 for (;;) 1147 { 1148 ch = *l; 1149 buf = l; 1150 buflen = 0; 1151#ifndef CHARSET_EBCDIC 1152 while ( ((ch >= 'A') && (ch <= 'Z')) || 1153 ((ch >= '0') && (ch <= '9')) || 1154 ((ch >= 'a') && (ch <= 'z')) || 1155 (ch == '-') || (ch == '.')) 1156#else 1157 while ( isalnum(ch) || (ch == '-') || (ch == '.')) 1158#endif 1159 { 1160 ch = *(++l); 1161 buflen++; 1162 } 1163 1164 if (buflen == 0) 1165 { 1166 /* 1167 * We hit something we cannot deal with, 1168 * it is no command or separator nor 1169 * alphanumeric, so we call this an error. 1170 */ 1171 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1172 SSL_R_INVALID_COMMAND); 1173 retval = found = 0; 1174 l++; 1175 break; 1176 } 1177 1178 if (rule == CIPHER_SPECIAL) 1179 { 1180 found = 0; /* unused -- avoid compiler warning */ 1181 break; /* special treatment */ 1182 } 1183 1184 /* check for multi-part specification */ 1185 if (ch == '+') 1186 { 1187 multi=1; 1188 l++; 1189 } 1190 else 1191 multi=0; 1192 1193 /* 1194 * Now search for the cipher alias in the ca_list. Be careful 1195 * with the strncmp, because the "buflen" limitation 1196 * will make the rule "ADH:SOME" and the cipher 1197 * "ADH-MY-CIPHER" look like a match for buflen=3. 1198 * So additionally check whether the cipher name found 1199 * has the correct length. We can save a strlen() call: 1200 * just checking for the '\0' at the right place is 1201 * sufficient, we have to strncmp() anyway. (We cannot 1202 * use strcmp(), because buf is not '\0' terminated.) 1203 */ 1204 j = found = 0; 1205 cipher_id = 0; 1206 while (ca_list[j]) 1207 { 1208 if (!strncmp(buf, ca_list[j]->name, buflen) && 1209 (ca_list[j]->name[buflen] == '\0')) 1210 { 1211 found = 1; 1212 break; 1213 } 1214 else 1215 j++; 1216 } 1217 1218 if (!found) 1219 break; /* ignore this entry */ 1220 1221 if (ca_list[j]->algorithm_mkey) 1222 { 1223 if (alg_mkey) 1224 { 1225 alg_mkey &= ca_list[j]->algorithm_mkey; 1226 if (!alg_mkey) { found = 0; break; } 1227 } 1228 else 1229 alg_mkey = ca_list[j]->algorithm_mkey; 1230 } 1231 1232 if (ca_list[j]->algorithm_auth) 1233 { 1234 if (alg_auth) 1235 { 1236 alg_auth &= ca_list[j]->algorithm_auth; 1237 if (!alg_auth) { found = 0; break; } 1238 } 1239 else 1240 alg_auth = ca_list[j]->algorithm_auth; 1241 } 1242 1243 if (ca_list[j]->algorithm_enc) 1244 { 1245 if (alg_enc) 1246 { 1247 alg_enc &= ca_list[j]->algorithm_enc; 1248 if (!alg_enc) { found = 0; break; } 1249 } 1250 else 1251 alg_enc = ca_list[j]->algorithm_enc; 1252 } 1253 1254 if (ca_list[j]->algorithm_mac) 1255 { 1256 if (alg_mac) 1257 { 1258 alg_mac &= ca_list[j]->algorithm_mac; 1259 if (!alg_mac) { found = 0; break; } 1260 } 1261 else 1262 alg_mac = ca_list[j]->algorithm_mac; 1263 } 1264 1265 if (ca_list[j]->algo_strength & SSL_EXP_MASK) 1266 { 1267 if (algo_strength & SSL_EXP_MASK) 1268 { 1269 algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK; 1270 if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; } 1271 } 1272 else 1273 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; 1274 } 1275 1276 if (ca_list[j]->algo_strength & SSL_STRONG_MASK) 1277 { 1278 if (algo_strength & SSL_STRONG_MASK) 1279 { 1280 algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK; 1281 if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; } 1282 } 1283 else 1284 algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK; 1285 } 1286 1287 if (ca_list[j]->valid) 1288 { 1289 /* explicit ciphersuite found; its protocol version 1290 * does not become part of the search pattern!*/ 1291 1292 cipher_id = ca_list[j]->id; 1293 } 1294 else 1295 { 1296 /* not an explicit ciphersuite; only in this case, the 1297 * protocol version is considered part of the search pattern */ 1298 1299 if (ca_list[j]->algorithm_ssl) 1300 { 1301 if (alg_ssl) 1302 { 1303 alg_ssl &= ca_list[j]->algorithm_ssl; 1304 if (!alg_ssl) { found = 0; break; } 1305 } 1306 else 1307 alg_ssl = ca_list[j]->algorithm_ssl; 1308 } 1309 } 1310 1311 if (!multi) break; 1312 } 1313 1314 /* 1315 * Ok, we have the rule, now apply it 1316 */ 1317 if (rule == CIPHER_SPECIAL) 1318 { /* special command */ 1319 ok = 0; 1320 if ((buflen == 8) && 1321 !strncmp(buf, "STRENGTH", 8)) 1322 ok = ssl_cipher_strength_sort(head_p, tail_p); 1323 else 1324 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1325 SSL_R_INVALID_COMMAND); 1326 if (ok == 0) 1327 retval = 0; 1328 /* 1329 * We do not support any "multi" options 1330 * together with "@", so throw away the 1331 * rest of the command, if any left, until 1332 * end or ':' is found. 1333 */ 1334 while ((*l != '\0') && !ITEM_SEP(*l)) 1335 l++; 1336 } 1337 else if (found) 1338 { 1339 ssl_cipher_apply_rule(cipher_id, 1340 alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, 1341 rule, -1, head_p, tail_p); 1342 } 1343 else 1344 { 1345 while ((*l != '\0') && !ITEM_SEP(*l)) 1346 l++; 1347 } 1348 if (*l == '\0') break; /* done */ 1349 } 1350 1351 return(retval); 1352 } 1353 1354STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, 1355 STACK_OF(SSL_CIPHER) **cipher_list, 1356 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 1357 const char *rule_str) 1358 { 1359 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 1360 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl; 1361 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 1362 const char *rule_p; 1363 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 1364 const SSL_CIPHER **ca_list = NULL; 1365 1366 /* 1367 * Return with error if nothing to do. 1368 */ 1369 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 1370 return NULL; 1371 1372 /* 1373 * To reduce the work to do we only want to process the compiled 1374 * in algorithms, so we first get the mask of disabled ciphers. 1375 */ 1376 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl); 1377 1378 /* 1379 * Now we have to collect the available ciphers from the compiled 1380 * in ciphers. We cannot get more than the number compiled in, so 1381 * it is used for allocation. 1382 */ 1383 num_of_ciphers = ssl_method->num_ciphers(); 1384#ifdef KSSL_DEBUG 1385 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); 1386#endif /* KSSL_DEBUG */ 1387 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 1388 if (co_list == NULL) 1389 { 1390 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1391 return(NULL); /* Failure */ 1392 } 1393 1394 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, 1395 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl, 1396 co_list, &head, &tail); 1397 1398 1399 /* Now arrange all ciphers by preference: */ 1400 1401 /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */ 1402 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1403 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1404 1405 /* AES is our preferred symmetric cipher */ 1406 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1407 1408 /* Temporarily enable everything else for sorting */ 1409 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1410 1411 /* Low priority for MD5 */ 1412 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail); 1413 1414 /* Move anonymous ciphers to the end. Usually, these will remain disabled. 1415 * (For applications that allow them, they aren't too bad, but we prefer 1416 * authenticated ciphers.) */ 1417 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1418 1419 /* Move ciphers without forward secrecy to the end */ 1420 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1421 /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */ 1422 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1423 ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1424 ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1425 1426 /* RC4 is sort-of broken -- move the the end */ 1427 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1428 1429 /* Now sort by symmetric encryption strength. The above ordering remains 1430 * in force within each class */ 1431 if (!ssl_cipher_strength_sort(&head, &tail)) 1432 { 1433 OPENSSL_free(co_list); 1434 return NULL; 1435 } 1436 1437 /* Now disable everything (maintaining the ordering!) */ 1438 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1439 1440 1441 /* 1442 * We also need cipher aliases for selecting based on the rule_str. 1443 * There might be two types of entries in the rule_str: 1) names 1444 * of ciphers themselves 2) aliases for groups of ciphers. 1445 * For 1) we need the available ciphers and for 2) the cipher 1446 * groups of cipher_aliases added together in one list (otherwise 1447 * we would be happy with just the cipher_aliases table). 1448 */ 1449 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 1450 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 1451 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); 1452 if (ca_list == NULL) 1453 { 1454 OPENSSL_free(co_list); 1455 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1456 return(NULL); /* Failure */ 1457 } 1458 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, 1459 disabled_mkey, disabled_auth, disabled_enc, 1460 disabled_mac, disabled_ssl, head); 1461 1462 /* 1463 * If the rule_string begins with DEFAULT, apply the default rule 1464 * before using the (possibly available) additional rules. 1465 */ 1466 ok = 1; 1467 rule_p = rule_str; 1468 if (strncmp(rule_str,"DEFAULT",7) == 0) 1469 { 1470 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 1471 &head, &tail, ca_list); 1472 rule_p += 7; 1473 if (*rule_p == ':') 1474 rule_p++; 1475 } 1476 1477 if (ok && (strlen(rule_p) > 0)) 1478 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list); 1479 1480 OPENSSL_free((void *)ca_list); /* Not needed anymore */ 1481 1482 if (!ok) 1483 { /* Rule processing failure */ 1484 OPENSSL_free(co_list); 1485 return(NULL); 1486 } 1487 1488 /* 1489 * Allocate new "cipherstack" for the result, return with error 1490 * if we cannot get one. 1491 */ 1492 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) 1493 { 1494 OPENSSL_free(co_list); 1495 return(NULL); 1496 } 1497 1498 /* 1499 * The cipher selection for the list is done. The ciphers are added 1500 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1501 */ 1502 for (curr = head; curr != NULL; curr = curr->next) 1503 { 1504#ifdef OPENSSL_FIPS 1505 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) 1506#else 1507 if (curr->active) 1508#endif 1509 { 1510 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1511#ifdef CIPHER_DEBUG 1512 printf("<%s>\n",curr->cipher->name); 1513#endif 1514 } 1515 } 1516 OPENSSL_free(co_list); /* Not needed any longer */ 1517 1518 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1519 if (tmp_cipher_list == NULL) 1520 { 1521 sk_SSL_CIPHER_free(cipherstack); 1522 return NULL; 1523 } 1524 if (*cipher_list != NULL) 1525 sk_SSL_CIPHER_free(*cipher_list); 1526 *cipher_list = cipherstack; 1527 if (*cipher_list_by_id != NULL) 1528 sk_SSL_CIPHER_free(*cipher_list_by_id); 1529 *cipher_list_by_id = tmp_cipher_list; 1530 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); 1531 1532 sk_SSL_CIPHER_sort(*cipher_list_by_id); 1533 return(cipherstack); 1534 } 1535 1536char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) 1537 { 1538 int is_export,pkl,kl; 1539 const char *ver,*exp_str; 1540 const char *kx,*au,*enc,*mac; 1541 unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2; 1542#ifdef KSSL_DEBUG 1543 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n"; 1544#else 1545 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1546#endif /* KSSL_DEBUG */ 1547 1548 alg_mkey = cipher->algorithm_mkey; 1549 alg_auth = cipher->algorithm_auth; 1550 alg_enc = cipher->algorithm_enc; 1551 alg_mac = cipher->algorithm_mac; 1552 alg_ssl = cipher->algorithm_ssl; 1553 1554 alg2=cipher->algorithm2; 1555 1556 is_export=SSL_C_IS_EXPORT(cipher); 1557 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1558 kl=SSL_C_EXPORT_KEYLENGTH(cipher); 1559 exp_str=is_export?" export":""; 1560 1561 if (alg_ssl & SSL_SSLV2) 1562 ver="SSLv2"; 1563 else if (alg_ssl & SSL_SSLV3) 1564 ver="SSLv3"; 1565 else if (alg_ssl & SSL_TLSV1_2) 1566 ver="TLSv1.2"; 1567 else 1568 ver="unknown"; 1569 1570 switch (alg_mkey) 1571 { 1572 case SSL_kRSA: 1573 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; 1574 break; 1575 case SSL_kDHr: 1576 kx="DH/RSA"; 1577 break; 1578 case SSL_kDHd: 1579 kx="DH/DSS"; 1580 break; 1581 case SSL_kKRB5: 1582 kx="KRB5"; 1583 break; 1584 case SSL_kEDH: 1585 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; 1586 break; 1587 case SSL_kECDHr: 1588 kx="ECDH/RSA"; 1589 break; 1590 case SSL_kECDHe: 1591 kx="ECDH/ECDSA"; 1592 break; 1593 case SSL_kEECDH: 1594 kx="ECDH"; 1595 break; 1596 case SSL_kPSK: 1597 kx="PSK"; 1598 break; 1599 case SSL_kSRP: 1600 kx="SRP"; 1601 break; 1602 default: 1603 kx="unknown"; 1604 } 1605 1606 switch (alg_auth) 1607 { 1608 case SSL_aRSA: 1609 au="RSA"; 1610 break; 1611 case SSL_aDSS: 1612 au="DSS"; 1613 break; 1614 case SSL_aDH: 1615 au="DH"; 1616 break; 1617 case SSL_aKRB5: 1618 au="KRB5"; 1619 break; 1620 case SSL_aECDH: 1621 au="ECDH"; 1622 break; 1623 case SSL_aNULL: 1624 au="None"; 1625 break; 1626 case SSL_aECDSA: 1627 au="ECDSA"; 1628 break; 1629 case SSL_aPSK: 1630 au="PSK"; 1631 break; 1632 case SSL_aSRP: 1633 au="SRP"; 1634 break; 1635 default: 1636 au="unknown"; 1637 break; 1638 } 1639 1640 switch (alg_enc) 1641 { 1642 case SSL_DES: 1643 enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; 1644 break; 1645 case SSL_3DES: 1646 enc="3DES(168)"; 1647 break; 1648 case SSL_RC4: 1649 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") 1650 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); 1651 break; 1652 case SSL_RC2: 1653 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; 1654 break; 1655 case SSL_IDEA: 1656 enc="IDEA(128)"; 1657 break; 1658 case SSL_eNULL: 1659 enc="None"; 1660 break; 1661 case SSL_AES128: 1662 enc="AES(128)"; 1663 break; 1664 case SSL_AES256: 1665 enc="AES(256)"; 1666 break; 1667 case SSL_AES128GCM: 1668 enc="AESGCM(128)"; 1669 break; 1670 case SSL_AES256GCM: 1671 enc="AESGCM(256)"; 1672 break; 1673 case SSL_CAMELLIA128: 1674 enc="Camellia(128)"; 1675 break; 1676 case SSL_CAMELLIA256: 1677 enc="Camellia(256)"; 1678 break; 1679 case SSL_SEED: 1680 enc="SEED(128)"; 1681 break; 1682 default: 1683 enc="unknown"; 1684 break; 1685 } 1686 1687 switch (alg_mac) 1688 { 1689 case SSL_MD5: 1690 mac="MD5"; 1691 break; 1692 case SSL_SHA1: 1693 mac="SHA1"; 1694 break; 1695 case SSL_SHA256: 1696 mac="SHA256"; 1697 break; 1698 case SSL_SHA384: 1699 mac="SHA384"; 1700 break; 1701 case SSL_AEAD: 1702 mac="AEAD"; 1703 break; 1704 default: 1705 mac="unknown"; 1706 break; 1707 } 1708 1709 if (buf == NULL) 1710 { 1711 len=128; 1712 buf=OPENSSL_malloc(len); 1713 if (buf == NULL) return("OPENSSL_malloc Error"); 1714 } 1715 else if (len < 128) 1716 return("Buffer too small"); 1717 1718#ifdef KSSL_DEBUG 1719 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl); 1720#else 1721 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); 1722#endif /* KSSL_DEBUG */ 1723 return(buf); 1724 } 1725 1726char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1727 { 1728 int i; 1729 1730 if (c == NULL) return("(NONE)"); 1731 i=(int)(c->id>>24L); 1732 if (i == 3) 1733 return("TLSv1/SSLv3"); 1734 else if (i == 2) 1735 return("SSLv2"); 1736 else 1737 return("unknown"); 1738 } 1739 1740/* return the actual cipher being used */ 1741const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1742 { 1743 if (c != NULL) 1744 return(c->name); 1745 return("(NONE)"); 1746 } 1747 1748/* number of bits for symmetric cipher */ 1749int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1750 { 1751 int ret=0; 1752 1753 if (c != NULL) 1754 { 1755 if (alg_bits != NULL) *alg_bits = c->alg_bits; 1756 ret = c->strength_bits; 1757 } 1758 return(ret); 1759 } 1760 1761unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c) 1762 { 1763 return c->id; 1764 } 1765 1766SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1767 { 1768 SSL_COMP *ctmp; 1769 int i,nn; 1770 1771 if ((n == 0) || (sk == NULL)) return(NULL); 1772 nn=sk_SSL_COMP_num(sk); 1773 for (i=0; i<nn; i++) 1774 { 1775 ctmp=sk_SSL_COMP_value(sk,i); 1776 if (ctmp->id == n) 1777 return(ctmp); 1778 } 1779 return(NULL); 1780 } 1781 1782#ifdef OPENSSL_NO_COMP 1783void *SSL_COMP_get_compression_methods(void) 1784 { 1785 return NULL; 1786 } 1787int SSL_COMP_add_compression_method(int id, void *cm) 1788 { 1789 return 1; 1790 } 1791 1792const char *SSL_COMP_get_name(const void *comp) 1793 { 1794 return NULL; 1795 } 1796#else 1797STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1798 { 1799 load_builtin_compressions(); 1800 return(ssl_comp_methods); 1801 } 1802 1803int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1804 { 1805 SSL_COMP *comp; 1806 1807 if (cm == NULL || cm->type == NID_undef) 1808 return 1; 1809 1810 /* According to draft-ietf-tls-compression-04.txt, the 1811 compression number ranges should be the following: 1812 1813 0 to 63: methods defined by the IETF 1814 64 to 192: external party methods assigned by IANA 1815 193 to 255: reserved for private use */ 1816 if (id < 193 || id > 255) 1817 { 1818 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1819 return 0; 1820 } 1821 1822 MemCheck_off(); 1823 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1824 comp->id=id; 1825 comp->method=cm; 1826 load_builtin_compressions(); 1827 if (ssl_comp_methods 1828 && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0) 1829 { 1830 OPENSSL_free(comp); 1831 MemCheck_on(); 1832 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); 1833 return(1); 1834 } 1835 else if ((ssl_comp_methods == NULL) 1836 || !sk_SSL_COMP_push(ssl_comp_methods,comp)) 1837 { 1838 OPENSSL_free(comp); 1839 MemCheck_on(); 1840 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); 1841 return(1); 1842 } 1843 else 1844 { 1845 MemCheck_on(); 1846 return(0); 1847 } 1848 } 1849 1850const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1851 { 1852 if (comp) 1853 return comp->name; 1854 return NULL; 1855 } 1856 1857#endif 1858