1 /* ssl/ssl_ciph.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 (at) 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 (at) cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh (at) 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 14 168 169 170 static 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 2 177 178 static 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 190 static 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 */ 197 static 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 }; 201 202 static int ssl_mac_secret_size[SSL_MD_NUM_IDX]={ 203 0,0,0,0,0,0 204 }; 205 206 static 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 5 217 218 typedef 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; 225 226 static 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 333 334 static 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 347 348 static 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 363 364 void 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 433 434 static int sk_comp_cmp(const SSL_COMP * const *a, 435 const SSL_COMP * const *b) 436 { 437 return((*a)->id-(*b)->id); 438 } 439 440 static 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 485 486 int 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 #ifdef OPENSSL_FIPS 624 if (FIPS_mode()) 625 return 1; 626 #endif 627 628 if (c->algorithm_enc == SSL_RC4 && 629 c->algorithm_mac == SSL_MD5 && 630 (evp=EVP_get_cipherbyname("RC4-HMAC-MD5"))) 631 *enc = evp, *md = NULL; 632 else if (c->algorithm_enc == SSL_AES128 && 633 c->algorithm_mac == SSL_SHA1 && 634 (evp=EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1"))) 635 *enc = evp, *md = NULL; 636 else if (c->algorithm_enc == SSL_AES256 && 637 c->algorithm_mac == SSL_SHA1 && 638 (evp=EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1"))) 639 *enc = evp, *md = NULL; 640 return(1); 641 } 642 else 643 return(0); 644 } 645 646 int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md) 647 { 648 if (idx <0||idx>=SSL_MD_NUM_IDX) 649 { 650 return 0; 651 } 652 *mask = ssl_handshake_digest_flag[idx]; 653 if (*mask) 654 *md = ssl_digest_methods[idx]; 655 else 656 *md = NULL; 657 return 1; 658 } 659 660 #define ITEM_SEP(a) \ 661 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) 662 663 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, 664 CIPHER_ORDER **tail) 665 { 666 if (curr == *tail) return; 667 if (curr == *head) 668 *head=curr->next; 669 if (curr->prev != NULL) 670 curr->prev->next=curr->next; 671 if (curr->next != NULL) 672 curr->next->prev=curr->prev; 673 (*tail)->next=curr; 674 curr->prev= *tail; 675 curr->next=NULL; 676 *tail=curr; 677 } 678 679 static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, 680 CIPHER_ORDER **tail) 681 { 682 if (curr == *head) return; 683 if (curr == *tail) 684 *tail=curr->prev; 685 if (curr->next != NULL) 686 curr->next->prev=curr->prev; 687 if (curr->prev != NULL) 688 curr->prev->next=curr->next; 689 (*head)->prev=curr; 690 curr->next= *head; 691 curr->prev=NULL; 692 *head=curr; 693 } 694 695 static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl) 696 { 697 *mkey = 0; 698 *auth = 0; 699 *enc = 0; 700 *mac = 0; 701 *ssl = 0; 702 703 #ifdef OPENSSL_NO_RSA 704 *mkey |= SSL_kRSA; 705 *auth |= SSL_aRSA; 706 #endif 707 #ifdef OPENSSL_NO_DSA 708 *auth |= SSL_aDSS; 709 #endif 710 *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */ 711 *auth |= SSL_aDH; 712 #ifdef OPENSSL_NO_DH 713 *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH; 714 *auth |= SSL_aDH; 715 #endif 716 #ifdef OPENSSL_NO_KRB5 717 *mkey |= SSL_kKRB5; 718 *auth |= SSL_aKRB5; 719 #endif 720 #ifdef OPENSSL_NO_ECDSA 721 *auth |= SSL_aECDSA; 722 #endif 723 #ifdef OPENSSL_NO_ECDH 724 *mkey |= SSL_kECDHe|SSL_kECDHr; 725 *auth |= SSL_aECDH; 726 #endif 727 #ifdef OPENSSL_NO_PSK 728 *mkey |= SSL_kPSK; 729 *auth |= SSL_aPSK; 730 #endif 731 #ifdef OPENSSL_NO_SRP 732 *mkey |= SSL_kSRP; 733 #endif 734 /* Check for presence of GOST 34.10 algorithms, and if they 735 * do not present, disable appropriate auth and key exchange */ 736 if (!get_optional_pkey_id("gost94")) { 737 *auth |= SSL_aGOST94; 738 } 739 if (!get_optional_pkey_id("gost2001")) { 740 *auth |= SSL_aGOST01; 741 } 742 /* Disable GOST key exchange if no GOST signature algs are available * */ 743 if ((*auth & (SSL_aGOST94|SSL_aGOST01)) == (SSL_aGOST94|SSL_aGOST01)) { 744 *mkey |= SSL_kGOST; 745 } 746 #ifdef SSL_FORBID_ENULL 747 *enc |= SSL_eNULL; 748 #endif 749 750 751 752 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; 753 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; 754 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; 755 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; 756 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; 757 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0; 758 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0; 759 *enc |= (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] == NULL) ? SSL_AES128GCM:0; 760 *enc |= (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] == NULL) ? SSL_AES256GCM:0; 761 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0; 762 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0; 763 *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0; 764 *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; 765 766 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; 767 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; 768 *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256:0; 769 *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384:0; 770 *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94:0; 771 *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef)? SSL_GOST89MAC:0; 772 773 } 774 775 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, 776 int num_of_ciphers, 777 unsigned long disabled_mkey, unsigned long disabled_auth, 778 unsigned long disabled_enc, unsigned long disabled_mac, 779 unsigned long disabled_ssl, 780 CIPHER_ORDER *co_list, 781 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 782 { 783 int i, co_list_num; 784 const SSL_CIPHER *c; 785 786 /* 787 * We have num_of_ciphers descriptions compiled in, depending on the 788 * method selected (SSLv2 and/or SSLv3, TLSv1 etc). 789 * These will later be sorted in a linked list with at most num 790 * entries. 791 */ 792 793 /* Get the initial list of ciphers */ 794 co_list_num = 0; /* actual count of ciphers */ 795 for (i = 0; i < num_of_ciphers; i++) 796 { 797 c = ssl_method->get_cipher(i); 798 /* drop those that use any of that is not available */ 799 if ((c != NULL) && c->valid && 800 #ifdef OPENSSL_FIPS 801 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) && 802 #endif 803 !(c->algorithm_mkey & disabled_mkey) && 804 !(c->algorithm_auth & disabled_auth) && 805 !(c->algorithm_enc & disabled_enc) && 806 !(c->algorithm_mac & disabled_mac) && 807 !(c->algorithm_ssl & disabled_ssl)) 808 { 809 co_list[co_list_num].cipher = c; 810 co_list[co_list_num].next = NULL; 811 co_list[co_list_num].prev = NULL; 812 co_list[co_list_num].active = 0; 813 co_list_num++; 814 #ifdef KSSL_DEBUG 815 printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth); 816 #endif /* KSSL_DEBUG */ 817 /* 818 if (!sk_push(ca_list,(char *)c)) goto err; 819 */ 820 } 821 } 822 823 /* 824 * Prepare linked list from list entries 825 */ 826 if (co_list_num > 0) 827 { 828 co_list[0].prev = NULL; 829 830 if (co_list_num > 1) 831 { 832 co_list[0].next = &co_list[1]; 833 834 for (i = 1; i < co_list_num - 1; i++) 835 { 836 co_list[i].prev = &co_list[i - 1]; 837 co_list[i].next = &co_list[i + 1]; 838 } 839 840 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; 841 } 842 843 co_list[co_list_num - 1].next = NULL; 844 845 *head_p = &co_list[0]; 846 *tail_p = &co_list[co_list_num - 1]; 847 } 848 } 849 850 static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, 851 int num_of_group_aliases, 852 unsigned long disabled_mkey, unsigned long disabled_auth, 853 unsigned long disabled_enc, unsigned long disabled_mac, 854 unsigned long disabled_ssl, 855 CIPHER_ORDER *head) 856 { 857 CIPHER_ORDER *ciph_curr; 858 const SSL_CIPHER **ca_curr; 859 int i; 860 unsigned long mask_mkey = ~disabled_mkey; 861 unsigned long mask_auth = ~disabled_auth; 862 unsigned long mask_enc = ~disabled_enc; 863 unsigned long mask_mac = ~disabled_mac; 864 unsigned long mask_ssl = ~disabled_ssl; 865 866 /* 867 * First, add the real ciphers as already collected 868 */ 869 ciph_curr = head; 870 ca_curr = ca_list; 871 while (ciph_curr != NULL) 872 { 873 *ca_curr = ciph_curr->cipher; 874 ca_curr++; 875 ciph_curr = ciph_curr->next; 876 } 877 878 /* 879 * Now we add the available ones from the cipher_aliases[] table. 880 * They represent either one or more algorithms, some of which 881 * in any affected category must be supported (set in enabled_mask), 882 * or represent a cipher strength value (will be added in any case because algorithms=0). 883 */ 884 for (i = 0; i < num_of_group_aliases; i++) 885 { 886 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey; 887 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth; 888 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc; 889 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac; 890 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl; 891 892 if (algorithm_mkey) 893 if ((algorithm_mkey & mask_mkey) == 0) 894 continue; 895 896 if (algorithm_auth) 897 if ((algorithm_auth & mask_auth) == 0) 898 continue; 899 900 if (algorithm_enc) 901 if ((algorithm_enc & mask_enc) == 0) 902 continue; 903 904 if (algorithm_mac) 905 if ((algorithm_mac & mask_mac) == 0) 906 continue; 907 908 if (algorithm_ssl) 909 if ((algorithm_ssl & mask_ssl) == 0) 910 continue; 911 912 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); 913 ca_curr++; 914 } 915 916 *ca_curr = NULL; /* end of list */ 917 } 918 919 static void ssl_cipher_apply_rule(unsigned long cipher_id, 920 unsigned long alg_mkey, unsigned long alg_auth, 921 unsigned long alg_enc, unsigned long alg_mac, 922 unsigned long alg_ssl, 923 unsigned long algo_strength, 924 int rule, int strength_bits, 925 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 926 { 927 CIPHER_ORDER *head, *tail, *curr, *curr2, *last; 928 const SSL_CIPHER *cp; 929 int reverse = 0; 930 931 #ifdef CIPHER_DEBUG 932 printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n", 933 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits); 934 #endif 935 936 if (rule == CIPHER_DEL) 937 reverse = 1; /* needed to maintain sorting between currently deleted ciphers */ 938 939 head = *head_p; 940 tail = *tail_p; 941 942 if (reverse) 943 { 944 curr = tail; 945 last = head; 946 } 947 else 948 { 949 curr = head; 950 last = tail; 951 } 952 953 curr2 = curr; 954 for (;;) 955 { 956 if ((curr == NULL) || (curr == last)) break; 957 curr = curr2; 958 curr2 = reverse ? curr->prev : curr->next; 959 960 cp = curr->cipher; 961 962 /* 963 * Selection criteria is either the value of strength_bits 964 * or the algorithms used. 965 */ 966 if (strength_bits >= 0) 967 { 968 if (strength_bits != cp->strength_bits) 969 continue; 970 } 971 else 972 { 973 #ifdef CIPHER_DEBUG 974 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); 975 #endif 976 977 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) 978 continue; 979 if (alg_auth && !(alg_auth & cp->algorithm_auth)) 980 continue; 981 if (alg_enc && !(alg_enc & cp->algorithm_enc)) 982 continue; 983 if (alg_mac && !(alg_mac & cp->algorithm_mac)) 984 continue; 985 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl)) 986 continue; 987 if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength)) 988 continue; 989 if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) 990 continue; 991 } 992 993 #ifdef CIPHER_DEBUG 994 printf("Action = %d\n", rule); 995 #endif 996 997 /* add the cipher if it has not been added yet. */ 998 if (rule == CIPHER_ADD) 999 { 1000 /* reverse == 0 */ 1001 if (!curr->active) 1002 { 1003 ll_append_tail(&head, curr, &tail); 1004 curr->active = 1; 1005 } 1006 } 1007 /* Move the added cipher to this location */ 1008 else if (rule == CIPHER_ORD) 1009 { 1010 /* reverse == 0 */ 1011 if (curr->active) 1012 { 1013 ll_append_tail(&head, curr, &tail); 1014 } 1015 } 1016 else if (rule == CIPHER_DEL) 1017 { 1018 /* reverse == 1 */ 1019 if (curr->active) 1020 { 1021 /* most recently deleted ciphersuites get best positions 1022 * for any future CIPHER_ADD (note that the CIPHER_DEL loop 1023 * works in reverse to maintain the order) */ 1024 ll_append_head(&head, curr, &tail); 1025 curr->active = 0; 1026 } 1027 } 1028 else if (rule == CIPHER_KILL) 1029 { 1030 /* reverse == 0 */ 1031 if (head == curr) 1032 head = curr->next; 1033 else 1034 curr->prev->next = curr->next; 1035 if (tail == curr) 1036 tail = curr->prev; 1037 curr->active = 0; 1038 if (curr->next != NULL) 1039 curr->next->prev = curr->prev; 1040 if (curr->prev != NULL) 1041 curr->prev->next = curr->next; 1042 curr->next = NULL; 1043 curr->prev = NULL; 1044 } 1045 } 1046 1047 *head_p = head; 1048 *tail_p = tail; 1049 } 1050 1051 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, 1052 CIPHER_ORDER **tail_p) 1053 { 1054 int max_strength_bits, i, *number_uses; 1055 CIPHER_ORDER *curr; 1056 1057 /* 1058 * This routine sorts the ciphers with descending strength. The sorting 1059 * must keep the pre-sorted sequence, so we apply the normal sorting 1060 * routine as '+' movement to the end of the list. 1061 */ 1062 max_strength_bits = 0; 1063 curr = *head_p; 1064 while (curr != NULL) 1065 { 1066 if (curr->active && 1067 (curr->cipher->strength_bits > max_strength_bits)) 1068 max_strength_bits = curr->cipher->strength_bits; 1069 curr = curr->next; 1070 } 1071 1072 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 1073 if (!number_uses) 1074 { 1075 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); 1076 return(0); 1077 } 1078 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 1079 1080 /* 1081 * Now find the strength_bits values actually used 1082 */ 1083 curr = *head_p; 1084 while (curr != NULL) 1085 { 1086 if (curr->active) 1087 number_uses[curr->cipher->strength_bits]++; 1088 curr = curr->next; 1089 } 1090 /* 1091 * Go through the list of used strength_bits values in descending 1092 * order. 1093 */ 1094 for (i = max_strength_bits; i >= 0; i--) 1095 if (number_uses[i] > 0) 1096 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p); 1097 1098 OPENSSL_free(number_uses); 1099 return(1); 1100 } 1101 1102 static int ssl_cipher_process_rulestr(const char *rule_str, 1103 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p, 1104 const SSL_CIPHER **ca_list) 1105 { 1106 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength; 1107 const char *l, *buf; 1108 int j, multi, found, rule, retval, ok, buflen; 1109 unsigned long cipher_id = 0; 1110 char ch; 1111 1112 retval = 1; 1113 l = rule_str; 1114 for (;;) 1115 { 1116 ch = *l; 1117 1118 if (ch == '\0') 1119 break; /* done */ 1120 if (ch == '-') 1121 { rule = CIPHER_DEL; l++; } 1122 else if (ch == '+') 1123 { rule = CIPHER_ORD; l++; } 1124 else if (ch == '!') 1125 { rule = CIPHER_KILL; l++; } 1126 else if (ch == '@') 1127 { rule = CIPHER_SPECIAL; l++; } 1128 else 1129 { rule = CIPHER_ADD; } 1130 1131 if (ITEM_SEP(ch)) 1132 { 1133 l++; 1134 continue; 1135 } 1136 1137 alg_mkey = 0; 1138 alg_auth = 0; 1139 alg_enc = 0; 1140 alg_mac = 0; 1141 alg_ssl = 0; 1142 algo_strength = 0; 1143 1144 for (;;) 1145 { 1146 ch = *l; 1147 buf = l; 1148 buflen = 0; 1149 #ifndef CHARSET_EBCDIC 1150 while ( ((ch >= 'A') && (ch <= 'Z')) || 1151 ((ch >= '0') && (ch <= '9')) || 1152 ((ch >= 'a') && (ch <= 'z')) || 1153 (ch == '-')) 1154 #else 1155 while ( isalnum(ch) || (ch == '-')) 1156 #endif 1157 { 1158 ch = *(++l); 1159 buflen++; 1160 } 1161 1162 if (buflen == 0) 1163 { 1164 /* 1165 * We hit something we cannot deal with, 1166 * it is no command or separator nor 1167 * alphanumeric, so we call this an error. 1168 */ 1169 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1170 SSL_R_INVALID_COMMAND); 1171 retval = found = 0; 1172 l++; 1173 break; 1174 } 1175 1176 if (rule == CIPHER_SPECIAL) 1177 { 1178 found = 0; /* unused -- avoid compiler warning */ 1179 break; /* special treatment */ 1180 } 1181 1182 /* check for multi-part specification */ 1183 if (ch == '+') 1184 { 1185 multi=1; 1186 l++; 1187 } 1188 else 1189 multi=0; 1190 1191 /* 1192 * Now search for the cipher alias in the ca_list. Be careful 1193 * with the strncmp, because the "buflen" limitation 1194 * will make the rule "ADH:SOME" and the cipher 1195 * "ADH-MY-CIPHER" look like a match for buflen=3. 1196 * So additionally check whether the cipher name found 1197 * has the correct length. We can save a strlen() call: 1198 * just checking for the '\0' at the right place is 1199 * sufficient, we have to strncmp() anyway. (We cannot 1200 * use strcmp(), because buf is not '\0' terminated.) 1201 */ 1202 j = found = 0; 1203 cipher_id = 0; 1204 while (ca_list[j]) 1205 { 1206 if (!strncmp(buf, ca_list[j]->name, buflen) && 1207 (ca_list[j]->name[buflen] == '\0')) 1208 { 1209 found = 1; 1210 break; 1211 } 1212 else 1213 j++; 1214 } 1215 1216 if (!found) 1217 break; /* ignore this entry */ 1218 1219 if (ca_list[j]->algorithm_mkey) 1220 { 1221 if (alg_mkey) 1222 { 1223 alg_mkey &= ca_list[j]->algorithm_mkey; 1224 if (!alg_mkey) { found = 0; break; } 1225 } 1226 else 1227 alg_mkey = ca_list[j]->algorithm_mkey; 1228 } 1229 1230 if (ca_list[j]->algorithm_auth) 1231 { 1232 if (alg_auth) 1233 { 1234 alg_auth &= ca_list[j]->algorithm_auth; 1235 if (!alg_auth) { found = 0; break; } 1236 } 1237 else 1238 alg_auth = ca_list[j]->algorithm_auth; 1239 } 1240 1241 if (ca_list[j]->algorithm_enc) 1242 { 1243 if (alg_enc) 1244 { 1245 alg_enc &= ca_list[j]->algorithm_enc; 1246 if (!alg_enc) { found = 0; break; } 1247 } 1248 else 1249 alg_enc = ca_list[j]->algorithm_enc; 1250 } 1251 1252 if (ca_list[j]->algorithm_mac) 1253 { 1254 if (alg_mac) 1255 { 1256 alg_mac &= ca_list[j]->algorithm_mac; 1257 if (!alg_mac) { found = 0; break; } 1258 } 1259 else 1260 alg_mac = ca_list[j]->algorithm_mac; 1261 } 1262 1263 if (ca_list[j]->algo_strength & SSL_EXP_MASK) 1264 { 1265 if (algo_strength & SSL_EXP_MASK) 1266 { 1267 algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK; 1268 if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; } 1269 } 1270 else 1271 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; 1272 } 1273 1274 if (ca_list[j]->algo_strength & SSL_STRONG_MASK) 1275 { 1276 if (algo_strength & SSL_STRONG_MASK) 1277 { 1278 algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK; 1279 if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; } 1280 } 1281 else 1282 algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK; 1283 } 1284 1285 if (ca_list[j]->valid) 1286 { 1287 /* explicit ciphersuite found; its protocol version 1288 * does not become part of the search pattern!*/ 1289 1290 cipher_id = ca_list[j]->id; 1291 } 1292 else 1293 { 1294 /* not an explicit ciphersuite; only in this case, the 1295 * protocol version is considered part of the search pattern */ 1296 1297 if (ca_list[j]->algorithm_ssl) 1298 { 1299 if (alg_ssl) 1300 { 1301 alg_ssl &= ca_list[j]->algorithm_ssl; 1302 if (!alg_ssl) { found = 0; break; } 1303 } 1304 else 1305 alg_ssl = ca_list[j]->algorithm_ssl; 1306 } 1307 } 1308 1309 if (!multi) break; 1310 } 1311 1312 /* 1313 * Ok, we have the rule, now apply it 1314 */ 1315 if (rule == CIPHER_SPECIAL) 1316 { /* special command */ 1317 ok = 0; 1318 if ((buflen == 8) && 1319 !strncmp(buf, "STRENGTH", 8)) 1320 ok = ssl_cipher_strength_sort(head_p, tail_p); 1321 else 1322 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1323 SSL_R_INVALID_COMMAND); 1324 if (ok == 0) 1325 retval = 0; 1326 /* 1327 * We do not support any "multi" options 1328 * together with "@", so throw away the 1329 * rest of the command, if any left, until 1330 * end or ':' is found. 1331 */ 1332 while ((*l != '\0') && !ITEM_SEP(*l)) 1333 l++; 1334 } 1335 else if (found) 1336 { 1337 ssl_cipher_apply_rule(cipher_id, 1338 alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, 1339 rule, -1, head_p, tail_p); 1340 } 1341 else 1342 { 1343 while ((*l != '\0') && !ITEM_SEP(*l)) 1344 l++; 1345 } 1346 if (*l == '\0') break; /* done */ 1347 } 1348 1349 return(retval); 1350 } 1351 1352 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, 1353 STACK_OF(SSL_CIPHER) **cipher_list, 1354 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 1355 const char *rule_str) 1356 { 1357 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 1358 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl; 1359 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 1360 const char *rule_p; 1361 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 1362 const SSL_CIPHER **ca_list = NULL; 1363 1364 /* 1365 * Return with error if nothing to do. 1366 */ 1367 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 1368 return NULL; 1369 1370 /* 1371 * To reduce the work to do we only want to process the compiled 1372 * in algorithms, so we first get the mask of disabled ciphers. 1373 */ 1374 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl); 1375 1376 /* 1377 * Now we have to collect the available ciphers from the compiled 1378 * in ciphers. We cannot get more than the number compiled in, so 1379 * it is used for allocation. 1380 */ 1381 num_of_ciphers = ssl_method->num_ciphers(); 1382 #ifdef KSSL_DEBUG 1383 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); 1384 #endif /* KSSL_DEBUG */ 1385 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 1386 if (co_list == NULL) 1387 { 1388 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1389 return(NULL); /* Failure */ 1390 } 1391 1392 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, 1393 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl, 1394 co_list, &head, &tail); 1395 1396 1397 /* Now arrange all ciphers by preference: */ 1398 1399 /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */ 1400 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1401 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1402 1403 /* AES is our preferred symmetric cipher */ 1404 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1405 1406 /* Temporarily enable everything else for sorting */ 1407 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1408 1409 /* Low priority for MD5 */ 1410 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail); 1411 1412 /* Move anonymous ciphers to the end. Usually, these will remain disabled. 1413 * (For applications that allow them, they aren't too bad, but we prefer 1414 * authenticated ciphers.) */ 1415 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1416 1417 /* Move ciphers without forward secrecy to the end */ 1418 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1419 /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */ 1420 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1421 ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1422 ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1423 1424 /* RC4 is sort-of broken -- move the the end */ 1425 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1426 1427 /* Now sort by symmetric encryption strength. The above ordering remains 1428 * in force within each class */ 1429 if (!ssl_cipher_strength_sort(&head, &tail)) 1430 { 1431 OPENSSL_free(co_list); 1432 return NULL; 1433 } 1434 1435 /* Now disable everything (maintaining the ordering!) */ 1436 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1437 1438 1439 /* 1440 * We also need cipher aliases for selecting based on the rule_str. 1441 * There might be two types of entries in the rule_str: 1) names 1442 * of ciphers themselves 2) aliases for groups of ciphers. 1443 * For 1) we need the available ciphers and for 2) the cipher 1444 * groups of cipher_aliases added together in one list (otherwise 1445 * we would be happy with just the cipher_aliases table). 1446 */ 1447 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 1448 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 1449 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); 1450 if (ca_list == NULL) 1451 { 1452 OPENSSL_free(co_list); 1453 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1454 return(NULL); /* Failure */ 1455 } 1456 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, 1457 disabled_mkey, disabled_auth, disabled_enc, 1458 disabled_mac, disabled_ssl, head); 1459 1460 /* 1461 * If the rule_string begins with DEFAULT, apply the default rule 1462 * before using the (possibly available) additional rules. 1463 */ 1464 ok = 1; 1465 rule_p = rule_str; 1466 if (strncmp(rule_str,"DEFAULT",7) == 0) 1467 { 1468 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 1469 &head, &tail, ca_list); 1470 rule_p += 7; 1471 if (*rule_p == ':') 1472 rule_p++; 1473 } 1474 1475 if (ok && (strlen(rule_p) > 0)) 1476 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list); 1477 1478 OPENSSL_free((void *)ca_list); /* Not needed anymore */ 1479 1480 if (!ok) 1481 { /* Rule processing failure */ 1482 OPENSSL_free(co_list); 1483 return(NULL); 1484 } 1485 1486 /* 1487 * Allocate new "cipherstack" for the result, return with error 1488 * if we cannot get one. 1489 */ 1490 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) 1491 { 1492 OPENSSL_free(co_list); 1493 return(NULL); 1494 } 1495 1496 /* 1497 * The cipher selection for the list is done. The ciphers are added 1498 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1499 */ 1500 for (curr = head; curr != NULL; curr = curr->next) 1501 { 1502 #ifdef OPENSSL_FIPS 1503 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) 1504 #else 1505 if (curr->active) 1506 #endif 1507 { 1508 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1509 #ifdef CIPHER_DEBUG 1510 printf("<%s>\n",curr->cipher->name); 1511 #endif 1512 } 1513 } 1514 OPENSSL_free(co_list); /* Not needed any longer */ 1515 1516 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1517 if (tmp_cipher_list == NULL) 1518 { 1519 sk_SSL_CIPHER_free(cipherstack); 1520 return NULL; 1521 } 1522 if (*cipher_list != NULL) 1523 sk_SSL_CIPHER_free(*cipher_list); 1524 *cipher_list = cipherstack; 1525 if (*cipher_list_by_id != NULL) 1526 sk_SSL_CIPHER_free(*cipher_list_by_id); 1527 *cipher_list_by_id = tmp_cipher_list; 1528 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); 1529 1530 sk_SSL_CIPHER_sort(*cipher_list_by_id); 1531 return(cipherstack); 1532 } 1533 1534 char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) 1535 { 1536 int is_export,pkl,kl; 1537 const char *ver,*exp_str; 1538 const char *kx,*au,*enc,*mac; 1539 unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2; 1540 #ifdef KSSL_DEBUG 1541 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n"; 1542 #else 1543 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1544 #endif /* KSSL_DEBUG */ 1545 1546 alg_mkey = cipher->algorithm_mkey; 1547 alg_auth = cipher->algorithm_auth; 1548 alg_enc = cipher->algorithm_enc; 1549 alg_mac = cipher->algorithm_mac; 1550 alg_ssl = cipher->algorithm_ssl; 1551 1552 alg2=cipher->algorithm2; 1553 1554 is_export=SSL_C_IS_EXPORT(cipher); 1555 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1556 kl=SSL_C_EXPORT_KEYLENGTH(cipher); 1557 exp_str=is_export?" export":""; 1558 1559 if (alg_ssl & SSL_SSLV2) 1560 ver="SSLv2"; 1561 else if (alg_ssl & SSL_SSLV3) 1562 ver="SSLv3"; 1563 else if (alg_ssl & SSL_TLSV1_2) 1564 ver="TLSv1.2"; 1565 else 1566 ver="unknown"; 1567 1568 switch (alg_mkey) 1569 { 1570 case SSL_kRSA: 1571 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; 1572 break; 1573 case SSL_kDHr: 1574 kx="DH/RSA"; 1575 break; 1576 case SSL_kDHd: 1577 kx="DH/DSS"; 1578 break; 1579 case SSL_kKRB5: 1580 kx="KRB5"; 1581 break; 1582 case SSL_kEDH: 1583 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; 1584 break; 1585 case SSL_kECDHr: 1586 kx="ECDH/RSA"; 1587 break; 1588 case SSL_kECDHe: 1589 kx="ECDH/ECDSA"; 1590 break; 1591 case SSL_kEECDH: 1592 kx="ECDH"; 1593 break; 1594 case SSL_kPSK: 1595 kx="PSK"; 1596 break; 1597 case SSL_kSRP: 1598 kx="SRP"; 1599 break; 1600 default: 1601 kx="unknown"; 1602 } 1603 1604 switch (alg_auth) 1605 { 1606 case SSL_aRSA: 1607 au="RSA"; 1608 break; 1609 case SSL_aDSS: 1610 au="DSS"; 1611 break; 1612 case SSL_aDH: 1613 au="DH"; 1614 break; 1615 case SSL_aKRB5: 1616 au="KRB5"; 1617 break; 1618 case SSL_aECDH: 1619 au="ECDH"; 1620 break; 1621 case SSL_aNULL: 1622 au="None"; 1623 break; 1624 case SSL_aECDSA: 1625 au="ECDSA"; 1626 break; 1627 case SSL_aPSK: 1628 au="PSK"; 1629 break; 1630 default: 1631 au="unknown"; 1632 break; 1633 } 1634 1635 switch (alg_enc) 1636 { 1637 case SSL_DES: 1638 enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; 1639 break; 1640 case SSL_3DES: 1641 enc="3DES(168)"; 1642 break; 1643 case SSL_RC4: 1644 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") 1645 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); 1646 break; 1647 case SSL_RC2: 1648 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; 1649 break; 1650 case SSL_IDEA: 1651 enc="IDEA(128)"; 1652 break; 1653 case SSL_eNULL: 1654 enc="None"; 1655 break; 1656 case SSL_AES128: 1657 enc="AES(128)"; 1658 break; 1659 case SSL_AES256: 1660 enc="AES(256)"; 1661 break; 1662 case SSL_AES128GCM: 1663 enc="AESGCM(128)"; 1664 break; 1665 case SSL_AES256GCM: 1666 enc="AESGCM(256)"; 1667 break; 1668 case SSL_CAMELLIA128: 1669 enc="Camellia(128)"; 1670 break; 1671 case SSL_CAMELLIA256: 1672 enc="Camellia(256)"; 1673 break; 1674 case SSL_SEED: 1675 enc="SEED(128)"; 1676 break; 1677 default: 1678 enc="unknown"; 1679 break; 1680 } 1681 1682 switch (alg_mac) 1683 { 1684 case SSL_MD5: 1685 mac="MD5"; 1686 break; 1687 case SSL_SHA1: 1688 mac="SHA1"; 1689 break; 1690 case SSL_SHA256: 1691 mac="SHA256"; 1692 break; 1693 case SSL_SHA384: 1694 mac="SHA384"; 1695 break; 1696 case SSL_AEAD: 1697 mac="AEAD"; 1698 break; 1699 default: 1700 mac="unknown"; 1701 break; 1702 } 1703 1704 if (buf == NULL) 1705 { 1706 len=128; 1707 buf=OPENSSL_malloc(len); 1708 if (buf == NULL) return("OPENSSL_malloc Error"); 1709 } 1710 else if (len < 128) 1711 return("Buffer too small"); 1712 1713 #ifdef KSSL_DEBUG 1714 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl); 1715 #else 1716 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); 1717 #endif /* KSSL_DEBUG */ 1718 return(buf); 1719 } 1720 1721 char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1722 { 1723 int i; 1724 1725 if (c == NULL) return("(NONE)"); 1726 i=(int)(c->id>>24L); 1727 if (i == 3) 1728 return("TLSv1/SSLv3"); 1729 else if (i == 2) 1730 return("SSLv2"); 1731 else 1732 return("unknown"); 1733 } 1734 1735 /* return the actual cipher being used */ 1736 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1737 { 1738 if (c != NULL) 1739 return(c->name); 1740 return("(NONE)"); 1741 } 1742 1743 /* number of bits for symmetric cipher */ 1744 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1745 { 1746 int ret=0; 1747 1748 if (c != NULL) 1749 { 1750 if (alg_bits != NULL) *alg_bits = c->alg_bits; 1751 ret = c->strength_bits; 1752 } 1753 return(ret); 1754 } 1755 1756 unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c) 1757 { 1758 return c->id; 1759 } 1760 1761 /* return string version of key exchange algorithm */ 1762 const char* SSL_CIPHER_authentication_method(const SSL_CIPHER* cipher) 1763 { 1764 switch (cipher->algorithm_mkey) 1765 { 1766 case SSL_kRSA: 1767 return SSL_TXT_RSA; 1768 case SSL_kDHr: 1769 return SSL_TXT_DH "_" SSL_TXT_RSA; 1770 case SSL_kDHd: 1771 return SSL_TXT_DH "_" SSL_TXT_DSS; 1772 case SSL_kEDH: 1773 switch (cipher->algorithm_auth) 1774 { 1775 case SSL_aDSS: 1776 return "DHE_" SSL_TXT_DSS; 1777 case SSL_aRSA: 1778 return "DHE_" SSL_TXT_RSA; 1779 case SSL_aNULL: 1780 return SSL_TXT_DH "_anon"; 1781 default: 1782 return "UNKNOWN"; 1783 } 1784 case SSL_kKRB5: 1785 return SSL_TXT_KRB5; 1786 case SSL_kECDHr: 1787 return SSL_TXT_ECDH "_" SSL_TXT_RSA; 1788 case SSL_kECDHe: 1789 return SSL_TXT_ECDH "_" SSL_TXT_ECDSA; 1790 case SSL_kEECDH: 1791 switch (cipher->algorithm_auth) 1792 { 1793 case SSL_aECDSA: 1794 return "ECDHE_" SSL_TXT_ECDSA; 1795 case SSL_aRSA: 1796 return "ECDHE_" SSL_TXT_RSA; 1797 case SSL_aNULL: 1798 return SSL_TXT_ECDH "_anon"; 1799 default: 1800 return "UNKNOWN"; 1801 } 1802 default: 1803 return "UNKNOWN"; 1804 } 1805 } 1806 1807 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1808 { 1809 SSL_COMP *ctmp; 1810 int i,nn; 1811 1812 if ((n == 0) || (sk == NULL)) return(NULL); 1813 nn=sk_SSL_COMP_num(sk); 1814 for (i=0; i<nn; i++) 1815 { 1816 ctmp=sk_SSL_COMP_value(sk,i); 1817 if (ctmp->id == n) 1818 return(ctmp); 1819 } 1820 return(NULL); 1821 } 1822 1823 #ifdef OPENSSL_NO_COMP 1824 void *SSL_COMP_get_compression_methods(void) 1825 { 1826 return NULL; 1827 } 1828 int SSL_COMP_add_compression_method(int id, void *cm) 1829 { 1830 return 1; 1831 } 1832 1833 const char *SSL_COMP_get_name(const void *comp) 1834 { 1835 return NULL; 1836 } 1837 #else 1838 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1839 { 1840 load_builtin_compressions(); 1841 return(ssl_comp_methods); 1842 } 1843 1844 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1845 { 1846 SSL_COMP *comp; 1847 1848 if (cm == NULL || cm->type == NID_undef) 1849 return 1; 1850 1851 /* According to draft-ietf-tls-compression-04.txt, the 1852 compression number ranges should be the following: 1853 1854 0 to 63: methods defined by the IETF 1855 64 to 192: external party methods assigned by IANA 1856 193 to 255: reserved for private use */ 1857 if (id < 193 || id > 255) 1858 { 1859 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1860 return 0; 1861 } 1862 1863 MemCheck_off(); 1864 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1865 comp->id=id; 1866 comp->method=cm; 1867 load_builtin_compressions(); 1868 if (ssl_comp_methods 1869 && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0) 1870 { 1871 OPENSSL_free(comp); 1872 MemCheck_on(); 1873 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); 1874 return(1); 1875 } 1876 else if ((ssl_comp_methods == NULL) 1877 || !sk_SSL_COMP_push(ssl_comp_methods,comp)) 1878 { 1879 OPENSSL_free(comp); 1880 MemCheck_on(); 1881 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); 1882 return(1); 1883 } 1884 else 1885 { 1886 MemCheck_on(); 1887 return(0); 1888 } 1889 } 1890 1891 const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1892 { 1893 if (comp) 1894 return comp->name; 1895 return NULL; 1896 } 1897 1898 #endif 1899
