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 {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 335 336 static 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 349 350 static 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 365 366 void 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 435 436 static int sk_comp_cmp(const SSL_COMP * const *a, 437 const SSL_COMP * const *b) 438 { 439 return((*a)->id-(*b)->id); 440 } 441 442 static 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 487 488 int 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 } 647 648 int 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) == ',')) 664 665 static 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 } 680 681 static 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 } 696 697 static 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 } 776 777 static 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 } 851 852 static 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 } 920 921 static 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, *next, *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 next = tail; 947 last = head; 948 } 949 else 950 { 951 next = head; 952 last = tail; 953 } 954 955 curr = NULL; 956 for (;;) 957 { 958 if (curr == last) break; 959 960 curr = next; 961 962 if (curr == NULL) break; 963 964 next = reverse ? curr->prev : curr->next; 965 966 cp = curr->cipher; 967 968 /* 969 * Selection criteria is either the value of strength_bits 970 * or the algorithms used. 971 */ 972 if (strength_bits >= 0) 973 { 974 if (strength_bits != cp->strength_bits) 975 continue; 976 } 977 else 978 { 979 #ifdef CIPHER_DEBUG 980 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); 981 #endif 982 983 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) 984 continue; 985 if (alg_auth && !(alg_auth & cp->algorithm_auth)) 986 continue; 987 if (alg_enc && !(alg_enc & cp->algorithm_enc)) 988 continue; 989 if (alg_mac && !(alg_mac & cp->algorithm_mac)) 990 continue; 991 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl)) 992 continue; 993 if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength)) 994 continue; 995 if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) 996 continue; 997 } 998 999 #ifdef CIPHER_DEBUG 1000 printf("Action = %d\n", rule); 1001 #endif 1002 1003 /* add the cipher if it has not been added yet. */ 1004 if (rule == CIPHER_ADD) 1005 { 1006 /* reverse == 0 */ 1007 if (!curr->active) 1008 { 1009 ll_append_tail(&head, curr, &tail); 1010 curr->active = 1; 1011 } 1012 } 1013 /* Move the added cipher to this location */ 1014 else if (rule == CIPHER_ORD) 1015 { 1016 /* reverse == 0 */ 1017 if (curr->active) 1018 { 1019 ll_append_tail(&head, curr, &tail); 1020 } 1021 } 1022 else if (rule == CIPHER_DEL) 1023 { 1024 /* reverse == 1 */ 1025 if (curr->active) 1026 { 1027 /* most recently deleted ciphersuites get best positions 1028 * for any future CIPHER_ADD (note that the CIPHER_DEL loop 1029 * works in reverse to maintain the order) */ 1030 ll_append_head(&head, curr, &tail); 1031 curr->active = 0; 1032 } 1033 } 1034 else if (rule == CIPHER_KILL) 1035 { 1036 /* reverse == 0 */ 1037 if (head == curr) 1038 head = curr->next; 1039 else 1040 curr->prev->next = curr->next; 1041 if (tail == curr) 1042 tail = curr->prev; 1043 curr->active = 0; 1044 if (curr->next != NULL) 1045 curr->next->prev = curr->prev; 1046 if (curr->prev != NULL) 1047 curr->prev->next = curr->next; 1048 curr->next = NULL; 1049 curr->prev = NULL; 1050 } 1051 } 1052 1053 *head_p = head; 1054 *tail_p = tail; 1055 } 1056 1057 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, 1058 CIPHER_ORDER **tail_p) 1059 { 1060 int max_strength_bits, i, *number_uses; 1061 CIPHER_ORDER *curr; 1062 1063 /* 1064 * This routine sorts the ciphers with descending strength. The sorting 1065 * must keep the pre-sorted sequence, so we apply the normal sorting 1066 * routine as '+' movement to the end of the list. 1067 */ 1068 max_strength_bits = 0; 1069 curr = *head_p; 1070 while (curr != NULL) 1071 { 1072 if (curr->active && 1073 (curr->cipher->strength_bits > max_strength_bits)) 1074 max_strength_bits = curr->cipher->strength_bits; 1075 curr = curr->next; 1076 } 1077 1078 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 1079 if (!number_uses) 1080 { 1081 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); 1082 return(0); 1083 } 1084 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 1085 1086 /* 1087 * Now find the strength_bits values actually used 1088 */ 1089 curr = *head_p; 1090 while (curr != NULL) 1091 { 1092 if (curr->active) 1093 number_uses[curr->cipher->strength_bits]++; 1094 curr = curr->next; 1095 } 1096 /* 1097 * Go through the list of used strength_bits values in descending 1098 * order. 1099 */ 1100 for (i = max_strength_bits; i >= 0; i--) 1101 if (number_uses[i] > 0) 1102 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p); 1103 1104 OPENSSL_free(number_uses); 1105 return(1); 1106 } 1107 1108 static int ssl_cipher_process_rulestr(const char *rule_str, 1109 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p, 1110 const SSL_CIPHER **ca_list) 1111 { 1112 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength; 1113 const char *l, *buf; 1114 int j, multi, found, rule, retval, ok, buflen; 1115 unsigned long cipher_id = 0; 1116 char ch; 1117 1118 retval = 1; 1119 l = rule_str; 1120 for (;;) 1121 { 1122 ch = *l; 1123 1124 if (ch == '\0') 1125 break; /* done */ 1126 if (ch == '-') 1127 { rule = CIPHER_DEL; l++; } 1128 else if (ch == '+') 1129 { rule = CIPHER_ORD; l++; } 1130 else if (ch == '!') 1131 { rule = CIPHER_KILL; l++; } 1132 else if (ch == '@') 1133 { rule = CIPHER_SPECIAL; l++; } 1134 else 1135 { rule = CIPHER_ADD; } 1136 1137 if (ITEM_SEP(ch)) 1138 { 1139 l++; 1140 continue; 1141 } 1142 1143 alg_mkey = 0; 1144 alg_auth = 0; 1145 alg_enc = 0; 1146 alg_mac = 0; 1147 alg_ssl = 0; 1148 algo_strength = 0; 1149 1150 for (;;) 1151 { 1152 ch = *l; 1153 buf = l; 1154 buflen = 0; 1155 #ifndef CHARSET_EBCDIC 1156 while ( ((ch >= 'A') && (ch <= 'Z')) || 1157 ((ch >= '0') && (ch <= '9')) || 1158 ((ch >= 'a') && (ch <= 'z')) || 1159 (ch == '-') || (ch == '.')) 1160 #else 1161 while ( isalnum(ch) || (ch == '-') || (ch == '.')) 1162 #endif 1163 { 1164 ch = *(++l); 1165 buflen++; 1166 } 1167 1168 if (buflen == 0) 1169 { 1170 /* 1171 * We hit something we cannot deal with, 1172 * it is no command or separator nor 1173 * alphanumeric, so we call this an error. 1174 */ 1175 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1176 SSL_R_INVALID_COMMAND); 1177 retval = found = 0; 1178 l++; 1179 break; 1180 } 1181 1182 if (rule == CIPHER_SPECIAL) 1183 { 1184 found = 0; /* unused -- avoid compiler warning */ 1185 break; /* special treatment */ 1186 } 1187 1188 /* check for multi-part specification */ 1189 if (ch == '+') 1190 { 1191 multi=1; 1192 l++; 1193 } 1194 else 1195 multi=0; 1196 1197 /* 1198 * Now search for the cipher alias in the ca_list. Be careful 1199 * with the strncmp, because the "buflen" limitation 1200 * will make the rule "ADH:SOME" and the cipher 1201 * "ADH-MY-CIPHER" look like a match for buflen=3. 1202 * So additionally check whether the cipher name found 1203 * has the correct length. We can save a strlen() call: 1204 * just checking for the '\0' at the right place is 1205 * sufficient, we have to strncmp() anyway. (We cannot 1206 * use strcmp(), because buf is not '\0' terminated.) 1207 */ 1208 j = found = 0; 1209 cipher_id = 0; 1210 while (ca_list[j]) 1211 { 1212 if (!strncmp(buf, ca_list[j]->name, buflen) && 1213 (ca_list[j]->name[buflen] == '\0')) 1214 { 1215 found = 1; 1216 break; 1217 } 1218 else 1219 j++; 1220 } 1221 1222 if (!found) 1223 break; /* ignore this entry */ 1224 1225 if (ca_list[j]->algorithm_mkey) 1226 { 1227 if (alg_mkey) 1228 { 1229 alg_mkey &= ca_list[j]->algorithm_mkey; 1230 if (!alg_mkey) { found = 0; break; } 1231 } 1232 else 1233 alg_mkey = ca_list[j]->algorithm_mkey; 1234 } 1235 1236 if (ca_list[j]->algorithm_auth) 1237 { 1238 if (alg_auth) 1239 { 1240 alg_auth &= ca_list[j]->algorithm_auth; 1241 if (!alg_auth) { found = 0; break; } 1242 } 1243 else 1244 alg_auth = ca_list[j]->algorithm_auth; 1245 } 1246 1247 if (ca_list[j]->algorithm_enc) 1248 { 1249 if (alg_enc) 1250 { 1251 alg_enc &= ca_list[j]->algorithm_enc; 1252 if (!alg_enc) { found = 0; break; } 1253 } 1254 else 1255 alg_enc = ca_list[j]->algorithm_enc; 1256 } 1257 1258 if (ca_list[j]->algorithm_mac) 1259 { 1260 if (alg_mac) 1261 { 1262 alg_mac &= ca_list[j]->algorithm_mac; 1263 if (!alg_mac) { found = 0; break; } 1264 } 1265 else 1266 alg_mac = ca_list[j]->algorithm_mac; 1267 } 1268 1269 if (ca_list[j]->algo_strength & SSL_EXP_MASK) 1270 { 1271 if (algo_strength & SSL_EXP_MASK) 1272 { 1273 algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK; 1274 if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; } 1275 } 1276 else 1277 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; 1278 } 1279 1280 if (ca_list[j]->algo_strength & SSL_STRONG_MASK) 1281 { 1282 if (algo_strength & SSL_STRONG_MASK) 1283 { 1284 algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK; 1285 if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; } 1286 } 1287 else 1288 algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK; 1289 } 1290 1291 if (ca_list[j]->valid) 1292 { 1293 /* explicit ciphersuite found; its protocol version 1294 * does not become part of the search pattern!*/ 1295 1296 cipher_id = ca_list[j]->id; 1297 } 1298 else 1299 { 1300 /* not an explicit ciphersuite; only in this case, the 1301 * protocol version is considered part of the search pattern */ 1302 1303 if (ca_list[j]->algorithm_ssl) 1304 { 1305 if (alg_ssl) 1306 { 1307 alg_ssl &= ca_list[j]->algorithm_ssl; 1308 if (!alg_ssl) { found = 0; break; } 1309 } 1310 else 1311 alg_ssl = ca_list[j]->algorithm_ssl; 1312 } 1313 } 1314 1315 if (!multi) break; 1316 } 1317 1318 /* 1319 * Ok, we have the rule, now apply it 1320 */ 1321 if (rule == CIPHER_SPECIAL) 1322 { /* special command */ 1323 ok = 0; 1324 if ((buflen == 8) && 1325 !strncmp(buf, "STRENGTH", 8)) 1326 ok = ssl_cipher_strength_sort(head_p, tail_p); 1327 else 1328 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1329 SSL_R_INVALID_COMMAND); 1330 if (ok == 0) 1331 retval = 0; 1332 /* 1333 * We do not support any "multi" options 1334 * together with "@", so throw away the 1335 * rest of the command, if any left, until 1336 * end or ':' is found. 1337 */ 1338 while ((*l != '\0') && !ITEM_SEP(*l)) 1339 l++; 1340 } 1341 else if (found) 1342 { 1343 ssl_cipher_apply_rule(cipher_id, 1344 alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, 1345 rule, -1, head_p, tail_p); 1346 } 1347 else 1348 { 1349 while ((*l != '\0') && !ITEM_SEP(*l)) 1350 l++; 1351 } 1352 if (*l == '\0') break; /* done */ 1353 } 1354 1355 return(retval); 1356 } 1357 1358 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, 1359 STACK_OF(SSL_CIPHER) **cipher_list, 1360 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 1361 const char *rule_str) 1362 { 1363 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 1364 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl; 1365 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 1366 const char *rule_p; 1367 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 1368 const SSL_CIPHER **ca_list = NULL; 1369 1370 /* 1371 * Return with error if nothing to do. 1372 */ 1373 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 1374 return NULL; 1375 1376 /* 1377 * To reduce the work to do we only want to process the compiled 1378 * in algorithms, so we first get the mask of disabled ciphers. 1379 */ 1380 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl); 1381 1382 /* 1383 * Now we have to collect the available ciphers from the compiled 1384 * in ciphers. We cannot get more than the number compiled in, so 1385 * it is used for allocation. 1386 */ 1387 num_of_ciphers = ssl_method->num_ciphers(); 1388 #ifdef KSSL_DEBUG 1389 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); 1390 #endif /* KSSL_DEBUG */ 1391 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 1392 if (co_list == NULL) 1393 { 1394 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1395 return(NULL); /* Failure */ 1396 } 1397 1398 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, 1399 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl, 1400 co_list, &head, &tail); 1401 1402 1403 /* Now arrange all ciphers by preference: */ 1404 1405 /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */ 1406 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1407 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1408 1409 /* AES is our preferred symmetric cipher */ 1410 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1411 1412 /* Temporarily enable everything else for sorting */ 1413 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1414 1415 /* Low priority for MD5 */ 1416 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail); 1417 1418 /* Move anonymous ciphers to the end. Usually, these will remain disabled. 1419 * (For applications that allow them, they aren't too bad, but we prefer 1420 * authenticated ciphers.) */ 1421 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1422 1423 /* Move ciphers without forward secrecy to the end */ 1424 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1425 /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */ 1426 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1427 ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1428 ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1429 1430 /* RC4 is sort-of broken -- move the the end */ 1431 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1432 1433 /* Now sort by symmetric encryption strength. The above ordering remains 1434 * in force within each class */ 1435 if (!ssl_cipher_strength_sort(&head, &tail)) 1436 { 1437 OPENSSL_free(co_list); 1438 return NULL; 1439 } 1440 1441 /* Now disable everything (maintaining the ordering!) */ 1442 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1443 1444 1445 /* 1446 * We also need cipher aliases for selecting based on the rule_str. 1447 * There might be two types of entries in the rule_str: 1) names 1448 * of ciphers themselves 2) aliases for groups of ciphers. 1449 * For 1) we need the available ciphers and for 2) the cipher 1450 * groups of cipher_aliases added together in one list (otherwise 1451 * we would be happy with just the cipher_aliases table). 1452 */ 1453 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 1454 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 1455 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); 1456 if (ca_list == NULL) 1457 { 1458 OPENSSL_free(co_list); 1459 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1460 return(NULL); /* Failure */ 1461 } 1462 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, 1463 disabled_mkey, disabled_auth, disabled_enc, 1464 disabled_mac, disabled_ssl, head); 1465 1466 /* 1467 * If the rule_string begins with DEFAULT, apply the default rule 1468 * before using the (possibly available) additional rules. 1469 */ 1470 ok = 1; 1471 rule_p = rule_str; 1472 if (strncmp(rule_str,"DEFAULT",7) == 0) 1473 { 1474 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 1475 &head, &tail, ca_list); 1476 rule_p += 7; 1477 if (*rule_p == ':') 1478 rule_p++; 1479 } 1480 1481 if (ok && (strlen(rule_p) > 0)) 1482 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list); 1483 1484 OPENSSL_free((void *)ca_list); /* Not needed anymore */ 1485 1486 if (!ok) 1487 { /* Rule processing failure */ 1488 OPENSSL_free(co_list); 1489 return(NULL); 1490 } 1491 1492 /* 1493 * Allocate new "cipherstack" for the result, return with error 1494 * if we cannot get one. 1495 */ 1496 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) 1497 { 1498 OPENSSL_free(co_list); 1499 return(NULL); 1500 } 1501 1502 /* 1503 * The cipher selection for the list is done. The ciphers are added 1504 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1505 */ 1506 for (curr = head; curr != NULL; curr = curr->next) 1507 { 1508 #ifdef OPENSSL_FIPS 1509 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) 1510 #else 1511 if (curr->active) 1512 #endif 1513 { 1514 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1515 #ifdef CIPHER_DEBUG 1516 printf("<%s>\n",curr->cipher->name); 1517 #endif 1518 } 1519 } 1520 OPENSSL_free(co_list); /* Not needed any longer */ 1521 1522 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1523 if (tmp_cipher_list == NULL) 1524 { 1525 sk_SSL_CIPHER_free(cipherstack); 1526 return NULL; 1527 } 1528 if (*cipher_list != NULL) 1529 sk_SSL_CIPHER_free(*cipher_list); 1530 *cipher_list = cipherstack; 1531 if (*cipher_list_by_id != NULL) 1532 sk_SSL_CIPHER_free(*cipher_list_by_id); 1533 *cipher_list_by_id = tmp_cipher_list; 1534 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); 1535 1536 sk_SSL_CIPHER_sort(*cipher_list_by_id); 1537 return(cipherstack); 1538 } 1539 1540 char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) 1541 { 1542 int is_export,pkl,kl; 1543 const char *ver,*exp_str; 1544 const char *kx,*au,*enc,*mac; 1545 unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2; 1546 #ifdef KSSL_DEBUG 1547 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n"; 1548 #else 1549 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1550 #endif /* KSSL_DEBUG */ 1551 1552 alg_mkey = cipher->algorithm_mkey; 1553 alg_auth = cipher->algorithm_auth; 1554 alg_enc = cipher->algorithm_enc; 1555 alg_mac = cipher->algorithm_mac; 1556 alg_ssl = cipher->algorithm_ssl; 1557 1558 alg2=cipher->algorithm2; 1559 1560 is_export=SSL_C_IS_EXPORT(cipher); 1561 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1562 kl=SSL_C_EXPORT_KEYLENGTH(cipher); 1563 exp_str=is_export?" export":""; 1564 1565 if (alg_ssl & SSL_SSLV2) 1566 ver="SSLv2"; 1567 else if (alg_ssl & SSL_SSLV3) 1568 ver="SSLv3"; 1569 else if (alg_ssl & SSL_TLSV1_2) 1570 ver="TLSv1.2"; 1571 else 1572 ver="unknown"; 1573 1574 switch (alg_mkey) 1575 { 1576 case SSL_kRSA: 1577 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; 1578 break; 1579 case SSL_kDHr: 1580 kx="DH/RSA"; 1581 break; 1582 case SSL_kDHd: 1583 kx="DH/DSS"; 1584 break; 1585 case SSL_kKRB5: 1586 kx="KRB5"; 1587 break; 1588 case SSL_kEDH: 1589 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; 1590 break; 1591 case SSL_kECDHr: 1592 kx="ECDH/RSA"; 1593 break; 1594 case SSL_kECDHe: 1595 kx="ECDH/ECDSA"; 1596 break; 1597 case SSL_kEECDH: 1598 kx="ECDH"; 1599 break; 1600 case SSL_kPSK: 1601 kx="PSK"; 1602 break; 1603 case SSL_kSRP: 1604 kx="SRP"; 1605 break; 1606 case SSL_kGOST: 1607 kx="GOST"; 1608 break; 1609 default: 1610 kx="unknown"; 1611 } 1612 1613 switch (alg_auth) 1614 { 1615 case SSL_aRSA: 1616 au="RSA"; 1617 break; 1618 case SSL_aDSS: 1619 au="DSS"; 1620 break; 1621 case SSL_aDH: 1622 au="DH"; 1623 break; 1624 case SSL_aKRB5: 1625 au="KRB5"; 1626 break; 1627 case SSL_aECDH: 1628 au="ECDH"; 1629 break; 1630 case SSL_aNULL: 1631 au="None"; 1632 break; 1633 case SSL_aECDSA: 1634 au="ECDSA"; 1635 break; 1636 case SSL_aPSK: 1637 au="PSK"; 1638 break; 1639 case SSL_aSRP: 1640 au="SRP"; 1641 break; 1642 case SSL_aGOST94: 1643 au="GOST94"; 1644 break; 1645 case SSL_aGOST01: 1646 au="GOST01"; 1647 break; 1648 default: 1649 au="unknown"; 1650 break; 1651 } 1652 1653 switch (alg_enc) 1654 { 1655 case SSL_DES: 1656 enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; 1657 break; 1658 case SSL_3DES: 1659 enc="3DES(168)"; 1660 break; 1661 case SSL_RC4: 1662 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") 1663 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); 1664 break; 1665 case SSL_RC2: 1666 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; 1667 break; 1668 case SSL_IDEA: 1669 enc="IDEA(128)"; 1670 break; 1671 case SSL_eNULL: 1672 enc="None"; 1673 break; 1674 case SSL_AES128: 1675 enc="AES(128)"; 1676 break; 1677 case SSL_AES256: 1678 enc="AES(256)"; 1679 break; 1680 case SSL_AES128GCM: 1681 enc="AESGCM(128)"; 1682 break; 1683 case SSL_AES256GCM: 1684 enc="AESGCM(256)"; 1685 break; 1686 case SSL_CAMELLIA128: 1687 enc="Camellia(128)"; 1688 break; 1689 case SSL_CAMELLIA256: 1690 enc="Camellia(256)"; 1691 break; 1692 case SSL_SEED: 1693 enc="SEED(128)"; 1694 break; 1695 case SSL_eGOST2814789CNT: 1696 enc="GOST89(256)"; 1697 break; 1698 default: 1699 enc="unknown"; 1700 break; 1701 } 1702 1703 switch (alg_mac) 1704 { 1705 case SSL_MD5: 1706 mac="MD5"; 1707 break; 1708 case SSL_SHA1: 1709 mac="SHA1"; 1710 break; 1711 case SSL_SHA256: 1712 mac="SHA256"; 1713 break; 1714 case SSL_SHA384: 1715 mac="SHA384"; 1716 break; 1717 case SSL_AEAD: 1718 mac="AEAD"; 1719 break; 1720 case SSL_GOST89MAC: 1721 mac="GOST89"; 1722 break; 1723 case SSL_GOST94: 1724 mac="GOST94"; 1725 break; 1726 default: 1727 mac="unknown"; 1728 break; 1729 } 1730 1731 if (buf == NULL) 1732 { 1733 len=128; 1734 buf=OPENSSL_malloc(len); 1735 if (buf == NULL) return("OPENSSL_malloc Error"); 1736 } 1737 else if (len < 128) 1738 return("Buffer too small"); 1739 1740 #ifdef KSSL_DEBUG 1741 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl); 1742 #else 1743 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); 1744 #endif /* KSSL_DEBUG */ 1745 return(buf); 1746 } 1747 1748 char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1749 { 1750 int i; 1751 1752 if (c == NULL) return("(NONE)"); 1753 i=(int)(c->id>>24L); 1754 if (i == 3) 1755 return("TLSv1/SSLv3"); 1756 else if (i == 2) 1757 return("SSLv2"); 1758 else 1759 return("unknown"); 1760 } 1761 1762 /* return the actual cipher being used */ 1763 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1764 { 1765 if (c != NULL) 1766 return(c->name); 1767 return("(NONE)"); 1768 } 1769 1770 /* number of bits for symmetric cipher */ 1771 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1772 { 1773 int ret=0; 1774 1775 if (c != NULL) 1776 { 1777 if (alg_bits != NULL) *alg_bits = c->alg_bits; 1778 ret = c->strength_bits; 1779 } 1780 return(ret); 1781 } 1782 1783 unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c) 1784 { 1785 return c->id; 1786 } 1787 1788 /* return string version of key exchange algorithm */ 1789 const char* SSL_CIPHER_authentication_method(const SSL_CIPHER* cipher) 1790 { 1791 switch (cipher->algorithm_mkey) 1792 { 1793 case SSL_kRSA: 1794 return SSL_TXT_RSA; 1795 case SSL_kDHr: 1796 return SSL_TXT_DH "_" SSL_TXT_RSA; 1797 case SSL_kDHd: 1798 return SSL_TXT_DH "_" SSL_TXT_DSS; 1799 case SSL_kEDH: 1800 switch (cipher->algorithm_auth) 1801 { 1802 case SSL_aDSS: 1803 return "DHE_" SSL_TXT_DSS; 1804 case SSL_aRSA: 1805 return "DHE_" SSL_TXT_RSA; 1806 case SSL_aNULL: 1807 return SSL_TXT_DH "_anon"; 1808 default: 1809 return "UNKNOWN"; 1810 } 1811 case SSL_kKRB5: 1812 return SSL_TXT_KRB5; 1813 case SSL_kECDHr: 1814 return SSL_TXT_ECDH "_" SSL_TXT_RSA; 1815 case SSL_kECDHe: 1816 return SSL_TXT_ECDH "_" SSL_TXT_ECDSA; 1817 case SSL_kEECDH: 1818 switch (cipher->algorithm_auth) 1819 { 1820 case SSL_aECDSA: 1821 return "ECDHE_" SSL_TXT_ECDSA; 1822 case SSL_aRSA: 1823 return "ECDHE_" SSL_TXT_RSA; 1824 case SSL_aNULL: 1825 return SSL_TXT_ECDH "_anon"; 1826 default: 1827 return "UNKNOWN"; 1828 } 1829 default: 1830 return "UNKNOWN"; 1831 } 1832 } 1833 1834 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1835 { 1836 SSL_COMP *ctmp; 1837 int i,nn; 1838 1839 if ((n == 0) || (sk == NULL)) return(NULL); 1840 nn=sk_SSL_COMP_num(sk); 1841 for (i=0; i<nn; i++) 1842 { 1843 ctmp=sk_SSL_COMP_value(sk,i); 1844 if (ctmp->id == n) 1845 return(ctmp); 1846 } 1847 return(NULL); 1848 } 1849 1850 #ifdef OPENSSL_NO_COMP 1851 void *SSL_COMP_get_compression_methods(void) 1852 { 1853 return NULL; 1854 } 1855 int SSL_COMP_add_compression_method(int id, void *cm) 1856 { 1857 return 1; 1858 } 1859 1860 const char *SSL_COMP_get_name(const void *comp) 1861 { 1862 return NULL; 1863 } 1864 #else 1865 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1866 { 1867 load_builtin_compressions(); 1868 return(ssl_comp_methods); 1869 } 1870 1871 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1872 { 1873 SSL_COMP *comp; 1874 1875 if (cm == NULL || cm->type == NID_undef) 1876 return 1; 1877 1878 /* According to draft-ietf-tls-compression-04.txt, the 1879 compression number ranges should be the following: 1880 1881 0 to 63: methods defined by the IETF 1882 64 to 192: external party methods assigned by IANA 1883 193 to 255: reserved for private use */ 1884 if (id < 193 || id > 255) 1885 { 1886 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1887 return 0; 1888 } 1889 1890 MemCheck_off(); 1891 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1892 comp->id=id; 1893 comp->method=cm; 1894 load_builtin_compressions(); 1895 if (ssl_comp_methods 1896 && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0) 1897 { 1898 OPENSSL_free(comp); 1899 MemCheck_on(); 1900 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); 1901 return(1); 1902 } 1903 else if ((ssl_comp_methods == NULL) 1904 || !sk_SSL_COMP_push(ssl_comp_methods,comp)) 1905 { 1906 OPENSSL_free(comp); 1907 MemCheck_on(); 1908 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); 1909 return(1); 1910 } 1911 else 1912 { 1913 MemCheck_on(); 1914 return(0); 1915 } 1916 } 1917 1918 const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1919 { 1920 if (comp) 1921 return comp->name; 1922 return NULL; 1923 } 1924 1925 #endif 1926
