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 {0,SSL_TXT_TLSV1_2,0, 0,0,0,0,SSL_TLSV1_2, 0,0,0,0}, 316 317 /* export flag */ 318 {0,SSL_TXT_EXP,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, 319 {0,SSL_TXT_EXPORT,0, 0,0,0,0,0,SSL_EXPORT,0,0,0}, 320 321 /* strength classes */ 322 {0,SSL_TXT_EXP40,0, 0,0,0,0,0,SSL_EXP40, 0,0,0}, 323 {0,SSL_TXT_EXP56,0, 0,0,0,0,0,SSL_EXP56, 0,0,0}, 324 {0,SSL_TXT_LOW,0, 0,0,0,0,0,SSL_LOW, 0,0,0}, 325 {0,SSL_TXT_MEDIUM,0, 0,0,0,0,0,SSL_MEDIUM,0,0,0}, 326 {0,SSL_TXT_HIGH,0, 0,0,0,0,0,SSL_HIGH, 0,0,0}, 327 /* FIPS 140-2 approved ciphersuite */ 328 {0,SSL_TXT_FIPS,0, 0,0,~SSL_eNULL,0,0,SSL_FIPS, 0,0,0}, 329 }; 330 /* Search for public key algorithm with given name and 331 * return its pkey_id if it is available. Otherwise return 0 332 */ 333 #ifdef OPENSSL_NO_ENGINE 334 335 static int get_optional_pkey_id(const char *pkey_name) 336 { 337 const EVP_PKEY_ASN1_METHOD *ameth; 338 int pkey_id=0; 339 ameth = EVP_PKEY_asn1_find_str(NULL,pkey_name,-1); 340 if (ameth) 341 { 342 EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); 343 } 344 return pkey_id; 345 } 346 347 #else 348 349 static int get_optional_pkey_id(const char *pkey_name) 350 { 351 const EVP_PKEY_ASN1_METHOD *ameth; 352 ENGINE *tmpeng = NULL; 353 int pkey_id=0; 354 ameth = EVP_PKEY_asn1_find_str(&tmpeng,pkey_name,-1); 355 if (ameth) 356 { 357 EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); 358 } 359 if (tmpeng) ENGINE_finish(tmpeng); 360 return pkey_id; 361 } 362 363 #endif 364 365 void ssl_load_ciphers(void) 366 { 367 ssl_cipher_methods[SSL_ENC_DES_IDX]= 368 EVP_get_cipherbyname(SN_des_cbc); 369 ssl_cipher_methods[SSL_ENC_3DES_IDX]= 370 EVP_get_cipherbyname(SN_des_ede3_cbc); 371 ssl_cipher_methods[SSL_ENC_RC4_IDX]= 372 EVP_get_cipherbyname(SN_rc4); 373 ssl_cipher_methods[SSL_ENC_RC2_IDX]= 374 EVP_get_cipherbyname(SN_rc2_cbc); 375 #ifndef OPENSSL_NO_IDEA 376 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= 377 EVP_get_cipherbyname(SN_idea_cbc); 378 #else 379 ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL; 380 #endif 381 ssl_cipher_methods[SSL_ENC_AES128_IDX]= 382 EVP_get_cipherbyname(SN_aes_128_cbc); 383 ssl_cipher_methods[SSL_ENC_AES256_IDX]= 384 EVP_get_cipherbyname(SN_aes_256_cbc); 385 ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= 386 EVP_get_cipherbyname(SN_camellia_128_cbc); 387 ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= 388 EVP_get_cipherbyname(SN_camellia_256_cbc); 389 ssl_cipher_methods[SSL_ENC_GOST89_IDX]= 390 EVP_get_cipherbyname(SN_gost89_cnt); 391 ssl_cipher_methods[SSL_ENC_SEED_IDX]= 392 EVP_get_cipherbyname(SN_seed_cbc); 393 394 ssl_cipher_methods[SSL_ENC_AES128GCM_IDX]= 395 EVP_get_cipherbyname(SN_aes_128_gcm); 396 ssl_cipher_methods[SSL_ENC_AES256GCM_IDX]= 397 EVP_get_cipherbyname(SN_aes_256_gcm); 398 399 ssl_digest_methods[SSL_MD_MD5_IDX]= 400 EVP_get_digestbyname(SN_md5); 401 ssl_mac_secret_size[SSL_MD_MD5_IDX]= 402 EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]); 403 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0); 404 ssl_digest_methods[SSL_MD_SHA1_IDX]= 405 EVP_get_digestbyname(SN_sha1); 406 ssl_mac_secret_size[SSL_MD_SHA1_IDX]= 407 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]); 408 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0); 409 ssl_digest_methods[SSL_MD_GOST94_IDX]= 410 EVP_get_digestbyname(SN_id_GostR3411_94); 411 if (ssl_digest_methods[SSL_MD_GOST94_IDX]) 412 { 413 ssl_mac_secret_size[SSL_MD_GOST94_IDX]= 414 EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]); 415 OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0); 416 } 417 ssl_digest_methods[SSL_MD_GOST89MAC_IDX]= 418 EVP_get_digestbyname(SN_id_Gost28147_89_MAC); 419 ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac"); 420 if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) { 421 ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX]=32; 422 } 423 424 ssl_digest_methods[SSL_MD_SHA256_IDX]= 425 EVP_get_digestbyname(SN_sha256); 426 ssl_mac_secret_size[SSL_MD_SHA256_IDX]= 427 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]); 428 ssl_digest_methods[SSL_MD_SHA384_IDX]= 429 EVP_get_digestbyname(SN_sha384); 430 ssl_mac_secret_size[SSL_MD_SHA384_IDX]= 431 EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]); 432 } 433 #ifndef OPENSSL_NO_COMP 434 435 static int sk_comp_cmp(const SSL_COMP * const *a, 436 const SSL_COMP * const *b) 437 { 438 return((*a)->id-(*b)->id); 439 } 440 441 static void load_builtin_compressions(void) 442 { 443 int got_write_lock = 0; 444 445 CRYPTO_r_lock(CRYPTO_LOCK_SSL); 446 if (ssl_comp_methods == NULL) 447 { 448 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 449 CRYPTO_w_lock(CRYPTO_LOCK_SSL); 450 got_write_lock = 1; 451 452 if (ssl_comp_methods == NULL) 453 { 454 SSL_COMP *comp = NULL; 455 456 MemCheck_off(); 457 ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); 458 if (ssl_comp_methods != NULL) 459 { 460 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 461 if (comp != NULL) 462 { 463 comp->method=COMP_zlib(); 464 if (comp->method 465 && comp->method->type == NID_undef) 466 OPENSSL_free(comp); 467 else 468 { 469 comp->id=SSL_COMP_ZLIB_IDX; 470 comp->name=comp->method->name; 471 sk_SSL_COMP_push(ssl_comp_methods,comp); 472 } 473 } 474 sk_SSL_COMP_sort(ssl_comp_methods); 475 } 476 MemCheck_on(); 477 } 478 } 479 480 if (got_write_lock) 481 CRYPTO_w_unlock(CRYPTO_LOCK_SSL); 482 else 483 CRYPTO_r_unlock(CRYPTO_LOCK_SSL); 484 } 485 #endif 486 487 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 488 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size,SSL_COMP **comp) 489 { 490 int i; 491 const SSL_CIPHER *c; 492 493 c=s->cipher; 494 if (c == NULL) return(0); 495 if (comp != NULL) 496 { 497 SSL_COMP ctmp; 498 #ifndef OPENSSL_NO_COMP 499 load_builtin_compressions(); 500 #endif 501 502 *comp=NULL; 503 ctmp.id=s->compress_meth; 504 if (ssl_comp_methods != NULL) 505 { 506 i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); 507 if (i >= 0) 508 *comp=sk_SSL_COMP_value(ssl_comp_methods,i); 509 else 510 *comp=NULL; 511 } 512 } 513 514 if ((enc == NULL) || (md == NULL)) return(0); 515 516 switch (c->algorithm_enc) 517 { 518 case SSL_DES: 519 i=SSL_ENC_DES_IDX; 520 break; 521 case SSL_3DES: 522 i=SSL_ENC_3DES_IDX; 523 break; 524 case SSL_RC4: 525 i=SSL_ENC_RC4_IDX; 526 break; 527 case SSL_RC2: 528 i=SSL_ENC_RC2_IDX; 529 break; 530 case SSL_IDEA: 531 i=SSL_ENC_IDEA_IDX; 532 break; 533 case SSL_eNULL: 534 i=SSL_ENC_NULL_IDX; 535 break; 536 case SSL_AES128: 537 i=SSL_ENC_AES128_IDX; 538 break; 539 case SSL_AES256: 540 i=SSL_ENC_AES256_IDX; 541 break; 542 case SSL_CAMELLIA128: 543 i=SSL_ENC_CAMELLIA128_IDX; 544 break; 545 case SSL_CAMELLIA256: 546 i=SSL_ENC_CAMELLIA256_IDX; 547 break; 548 case SSL_eGOST2814789CNT: 549 i=SSL_ENC_GOST89_IDX; 550 break; 551 case SSL_SEED: 552 i=SSL_ENC_SEED_IDX; 553 break; 554 case SSL_AES128GCM: 555 i=SSL_ENC_AES128GCM_IDX; 556 break; 557 case SSL_AES256GCM: 558 i=SSL_ENC_AES256GCM_IDX; 559 break; 560 default: 561 i= -1; 562 break; 563 } 564 565 if ((i < 0) || (i > SSL_ENC_NUM_IDX)) 566 *enc=NULL; 567 else 568 { 569 if (i == SSL_ENC_NULL_IDX) 570 *enc=EVP_enc_null(); 571 else 572 *enc=ssl_cipher_methods[i]; 573 } 574 575 switch (c->algorithm_mac) 576 { 577 case SSL_MD5: 578 i=SSL_MD_MD5_IDX; 579 break; 580 case SSL_SHA1: 581 i=SSL_MD_SHA1_IDX; 582 break; 583 case SSL_SHA256: 584 i=SSL_MD_SHA256_IDX; 585 break; 586 case SSL_SHA384: 587 i=SSL_MD_SHA384_IDX; 588 break; 589 case SSL_GOST94: 590 i = SSL_MD_GOST94_IDX; 591 break; 592 case SSL_GOST89MAC: 593 i = SSL_MD_GOST89MAC_IDX; 594 break; 595 default: 596 i= -1; 597 break; 598 } 599 if ((i < 0) || (i > SSL_MD_NUM_IDX)) 600 { 601 *md=NULL; 602 if (mac_pkey_type!=NULL) *mac_pkey_type = NID_undef; 603 if (mac_secret_size!=NULL) *mac_secret_size = 0; 604 if (c->algorithm_mac == SSL_AEAD) 605 mac_pkey_type = NULL; 606 } 607 else 608 { 609 *md=ssl_digest_methods[i]; 610 if (mac_pkey_type!=NULL) *mac_pkey_type = ssl_mac_pkey_id[i]; 611 if (mac_secret_size!=NULL) *mac_secret_size = ssl_mac_secret_size[i]; 612 } 613 614 if ((*enc != NULL) && 615 (*md != NULL || (EVP_CIPHER_flags(*enc)&EVP_CIPH_FLAG_AEAD_CIPHER)) && 616 (!mac_pkey_type||*mac_pkey_type != NID_undef)) 617 { 618 const EVP_CIPHER *evp; 619 620 if (s->ssl_version>>8 != TLS1_VERSION_MAJOR || 621 s->ssl_version < TLS1_VERSION) 622 return 1; 623 624 #ifdef OPENSSL_FIPS 625 if (FIPS_mode()) 626 return 1; 627 #endif 628 629 if (c->algorithm_enc == SSL_RC4 && 630 c->algorithm_mac == SSL_MD5 && 631 (evp=EVP_get_cipherbyname("RC4-HMAC-MD5"))) 632 *enc = evp, *md = NULL; 633 else if (c->algorithm_enc == SSL_AES128 && 634 c->algorithm_mac == SSL_SHA1 && 635 (evp=EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1"))) 636 *enc = evp, *md = NULL; 637 else if (c->algorithm_enc == SSL_AES256 && 638 c->algorithm_mac == SSL_SHA1 && 639 (evp=EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1"))) 640 *enc = evp, *md = NULL; 641 return(1); 642 } 643 else 644 return(0); 645 } 646 647 int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md) 648 { 649 if (idx <0||idx>=SSL_MD_NUM_IDX) 650 { 651 return 0; 652 } 653 *mask = ssl_handshake_digest_flag[idx]; 654 if (*mask) 655 *md = ssl_digest_methods[idx]; 656 else 657 *md = NULL; 658 return 1; 659 } 660 661 #define ITEM_SEP(a) \ 662 (((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) 663 664 static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, 665 CIPHER_ORDER **tail) 666 { 667 if (curr == *tail) return; 668 if (curr == *head) 669 *head=curr->next; 670 if (curr->prev != NULL) 671 curr->prev->next=curr->next; 672 if (curr->next != NULL) 673 curr->next->prev=curr->prev; 674 (*tail)->next=curr; 675 curr->prev= *tail; 676 curr->next=NULL; 677 *tail=curr; 678 } 679 680 static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, 681 CIPHER_ORDER **tail) 682 { 683 if (curr == *head) return; 684 if (curr == *tail) 685 *tail=curr->prev; 686 if (curr->next != NULL) 687 curr->next->prev=curr->prev; 688 if (curr->prev != NULL) 689 curr->prev->next=curr->next; 690 (*head)->prev=curr; 691 curr->next= *head; 692 curr->prev=NULL; 693 *head=curr; 694 } 695 696 static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl) 697 { 698 *mkey = 0; 699 *auth = 0; 700 *enc = 0; 701 *mac = 0; 702 *ssl = 0; 703 704 #ifdef OPENSSL_NO_RSA 705 *mkey |= SSL_kRSA; 706 *auth |= SSL_aRSA; 707 #endif 708 #ifdef OPENSSL_NO_DSA 709 *auth |= SSL_aDSS; 710 #endif 711 *mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */ 712 *auth |= SSL_aDH; 713 #ifdef OPENSSL_NO_DH 714 *mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH; 715 *auth |= SSL_aDH; 716 #endif 717 #ifdef OPENSSL_NO_KRB5 718 *mkey |= SSL_kKRB5; 719 *auth |= SSL_aKRB5; 720 #endif 721 #ifdef OPENSSL_NO_ECDSA 722 *auth |= SSL_aECDSA; 723 #endif 724 #ifdef OPENSSL_NO_ECDH 725 *mkey |= SSL_kECDHe|SSL_kECDHr; 726 *auth |= SSL_aECDH; 727 #endif 728 #ifdef OPENSSL_NO_PSK 729 *mkey |= SSL_kPSK; 730 *auth |= SSL_aPSK; 731 #endif 732 #ifdef OPENSSL_NO_SRP 733 *mkey |= SSL_kSRP; 734 #endif 735 /* Check for presence of GOST 34.10 algorithms, and if they 736 * do not present, disable appropriate auth and key exchange */ 737 if (!get_optional_pkey_id("gost94")) { 738 *auth |= SSL_aGOST94; 739 } 740 if (!get_optional_pkey_id("gost2001")) { 741 *auth |= SSL_aGOST01; 742 } 743 /* Disable GOST key exchange if no GOST signature algs are available * */ 744 if ((*auth & (SSL_aGOST94|SSL_aGOST01)) == (SSL_aGOST94|SSL_aGOST01)) { 745 *mkey |= SSL_kGOST; 746 } 747 #ifdef SSL_FORBID_ENULL 748 *enc |= SSL_eNULL; 749 #endif 750 751 752 753 *enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; 754 *enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; 755 *enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; 756 *enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; 757 *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; 758 *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0; 759 *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0; 760 *enc |= (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] == NULL) ? SSL_AES128GCM:0; 761 *enc |= (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] == NULL) ? SSL_AES256GCM:0; 762 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0; 763 *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0; 764 *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0; 765 *enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; 766 767 *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; 768 *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; 769 *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256:0; 770 *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384:0; 771 *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94:0; 772 *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef)? SSL_GOST89MAC:0; 773 774 } 775 776 static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, 777 int num_of_ciphers, 778 unsigned long disabled_mkey, unsigned long disabled_auth, 779 unsigned long disabled_enc, unsigned long disabled_mac, 780 unsigned long disabled_ssl, 781 CIPHER_ORDER *co_list, 782 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 783 { 784 int i, co_list_num; 785 const SSL_CIPHER *c; 786 787 /* 788 * We have num_of_ciphers descriptions compiled in, depending on the 789 * method selected (SSLv2 and/or SSLv3, TLSv1 etc). 790 * These will later be sorted in a linked list with at most num 791 * entries. 792 */ 793 794 /* Get the initial list of ciphers */ 795 co_list_num = 0; /* actual count of ciphers */ 796 for (i = 0; i < num_of_ciphers; i++) 797 { 798 c = ssl_method->get_cipher(i); 799 /* drop those that use any of that is not available */ 800 if ((c != NULL) && c->valid && 801 #ifdef OPENSSL_FIPS 802 (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) && 803 #endif 804 !(c->algorithm_mkey & disabled_mkey) && 805 !(c->algorithm_auth & disabled_auth) && 806 !(c->algorithm_enc & disabled_enc) && 807 !(c->algorithm_mac & disabled_mac) && 808 !(c->algorithm_ssl & disabled_ssl)) 809 { 810 co_list[co_list_num].cipher = c; 811 co_list[co_list_num].next = NULL; 812 co_list[co_list_num].prev = NULL; 813 co_list[co_list_num].active = 0; 814 co_list_num++; 815 #ifdef KSSL_DEBUG 816 printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth); 817 #endif /* KSSL_DEBUG */ 818 /* 819 if (!sk_push(ca_list,(char *)c)) goto err; 820 */ 821 } 822 } 823 824 /* 825 * Prepare linked list from list entries 826 */ 827 if (co_list_num > 0) 828 { 829 co_list[0].prev = NULL; 830 831 if (co_list_num > 1) 832 { 833 co_list[0].next = &co_list[1]; 834 835 for (i = 1; i < co_list_num - 1; i++) 836 { 837 co_list[i].prev = &co_list[i - 1]; 838 co_list[i].next = &co_list[i + 1]; 839 } 840 841 co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; 842 } 843 844 co_list[co_list_num - 1].next = NULL; 845 846 *head_p = &co_list[0]; 847 *tail_p = &co_list[co_list_num - 1]; 848 } 849 } 850 851 static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, 852 int num_of_group_aliases, 853 unsigned long disabled_mkey, unsigned long disabled_auth, 854 unsigned long disabled_enc, unsigned long disabled_mac, 855 unsigned long disabled_ssl, 856 CIPHER_ORDER *head) 857 { 858 CIPHER_ORDER *ciph_curr; 859 const SSL_CIPHER **ca_curr; 860 int i; 861 unsigned long mask_mkey = ~disabled_mkey; 862 unsigned long mask_auth = ~disabled_auth; 863 unsigned long mask_enc = ~disabled_enc; 864 unsigned long mask_mac = ~disabled_mac; 865 unsigned long mask_ssl = ~disabled_ssl; 866 867 /* 868 * First, add the real ciphers as already collected 869 */ 870 ciph_curr = head; 871 ca_curr = ca_list; 872 while (ciph_curr != NULL) 873 { 874 *ca_curr = ciph_curr->cipher; 875 ca_curr++; 876 ciph_curr = ciph_curr->next; 877 } 878 879 /* 880 * Now we add the available ones from the cipher_aliases[] table. 881 * They represent either one or more algorithms, some of which 882 * in any affected category must be supported (set in enabled_mask), 883 * or represent a cipher strength value (will be added in any case because algorithms=0). 884 */ 885 for (i = 0; i < num_of_group_aliases; i++) 886 { 887 unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey; 888 unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth; 889 unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc; 890 unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac; 891 unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl; 892 893 if (algorithm_mkey) 894 if ((algorithm_mkey & mask_mkey) == 0) 895 continue; 896 897 if (algorithm_auth) 898 if ((algorithm_auth & mask_auth) == 0) 899 continue; 900 901 if (algorithm_enc) 902 if ((algorithm_enc & mask_enc) == 0) 903 continue; 904 905 if (algorithm_mac) 906 if ((algorithm_mac & mask_mac) == 0) 907 continue; 908 909 if (algorithm_ssl) 910 if ((algorithm_ssl & mask_ssl) == 0) 911 continue; 912 913 *ca_curr = (SSL_CIPHER *)(cipher_aliases + i); 914 ca_curr++; 915 } 916 917 *ca_curr = NULL; /* end of list */ 918 } 919 920 static void ssl_cipher_apply_rule(unsigned long cipher_id, 921 unsigned long alg_mkey, unsigned long alg_auth, 922 unsigned long alg_enc, unsigned long alg_mac, 923 unsigned long alg_ssl, 924 unsigned long algo_strength, 925 int rule, int strength_bits, 926 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) 927 { 928 CIPHER_ORDER *head, *tail, *curr, *curr2, *last; 929 const SSL_CIPHER *cp; 930 int reverse = 0; 931 932 #ifdef CIPHER_DEBUG 933 printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n", 934 rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits); 935 #endif 936 937 if (rule == CIPHER_DEL) 938 reverse = 1; /* needed to maintain sorting between currently deleted ciphers */ 939 940 head = *head_p; 941 tail = *tail_p; 942 943 if (reverse) 944 { 945 curr = tail; 946 last = head; 947 } 948 else 949 { 950 curr = head; 951 last = tail; 952 } 953 954 curr2 = curr; 955 for (;;) 956 { 957 if ((curr == NULL) || (curr == last)) break; 958 curr = curr2; 959 curr2 = reverse ? curr->prev : curr->next; 960 961 cp = curr->cipher; 962 963 /* 964 * Selection criteria is either the value of strength_bits 965 * or the algorithms used. 966 */ 967 if (strength_bits >= 0) 968 { 969 if (strength_bits != cp->strength_bits) 970 continue; 971 } 972 else 973 { 974 #ifdef CIPHER_DEBUG 975 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); 976 #endif 977 978 if (alg_mkey && !(alg_mkey & cp->algorithm_mkey)) 979 continue; 980 if (alg_auth && !(alg_auth & cp->algorithm_auth)) 981 continue; 982 if (alg_enc && !(alg_enc & cp->algorithm_enc)) 983 continue; 984 if (alg_mac && !(alg_mac & cp->algorithm_mac)) 985 continue; 986 if (alg_ssl && !(alg_ssl & cp->algorithm_ssl)) 987 continue; 988 if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength)) 989 continue; 990 if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength)) 991 continue; 992 } 993 994 #ifdef CIPHER_DEBUG 995 printf("Action = %d\n", rule); 996 #endif 997 998 /* add the cipher if it has not been added yet. */ 999 if (rule == CIPHER_ADD) 1000 { 1001 /* reverse == 0 */ 1002 if (!curr->active) 1003 { 1004 ll_append_tail(&head, curr, &tail); 1005 curr->active = 1; 1006 } 1007 } 1008 /* Move the added cipher to this location */ 1009 else if (rule == CIPHER_ORD) 1010 { 1011 /* reverse == 0 */ 1012 if (curr->active) 1013 { 1014 ll_append_tail(&head, curr, &tail); 1015 } 1016 } 1017 else if (rule == CIPHER_DEL) 1018 { 1019 /* reverse == 1 */ 1020 if (curr->active) 1021 { 1022 /* most recently deleted ciphersuites get best positions 1023 * for any future CIPHER_ADD (note that the CIPHER_DEL loop 1024 * works in reverse to maintain the order) */ 1025 ll_append_head(&head, curr, &tail); 1026 curr->active = 0; 1027 } 1028 } 1029 else if (rule == CIPHER_KILL) 1030 { 1031 /* reverse == 0 */ 1032 if (head == curr) 1033 head = curr->next; 1034 else 1035 curr->prev->next = curr->next; 1036 if (tail == curr) 1037 tail = curr->prev; 1038 curr->active = 0; 1039 if (curr->next != NULL) 1040 curr->next->prev = curr->prev; 1041 if (curr->prev != NULL) 1042 curr->prev->next = curr->next; 1043 curr->next = NULL; 1044 curr->prev = NULL; 1045 } 1046 } 1047 1048 *head_p = head; 1049 *tail_p = tail; 1050 } 1051 1052 static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, 1053 CIPHER_ORDER **tail_p) 1054 { 1055 int max_strength_bits, i, *number_uses; 1056 CIPHER_ORDER *curr; 1057 1058 /* 1059 * This routine sorts the ciphers with descending strength. The sorting 1060 * must keep the pre-sorted sequence, so we apply the normal sorting 1061 * routine as '+' movement to the end of the list. 1062 */ 1063 max_strength_bits = 0; 1064 curr = *head_p; 1065 while (curr != NULL) 1066 { 1067 if (curr->active && 1068 (curr->cipher->strength_bits > max_strength_bits)) 1069 max_strength_bits = curr->cipher->strength_bits; 1070 curr = curr->next; 1071 } 1072 1073 number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); 1074 if (!number_uses) 1075 { 1076 SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); 1077 return(0); 1078 } 1079 memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); 1080 1081 /* 1082 * Now find the strength_bits values actually used 1083 */ 1084 curr = *head_p; 1085 while (curr != NULL) 1086 { 1087 if (curr->active) 1088 number_uses[curr->cipher->strength_bits]++; 1089 curr = curr->next; 1090 } 1091 /* 1092 * Go through the list of used strength_bits values in descending 1093 * order. 1094 */ 1095 for (i = max_strength_bits; i >= 0; i--) 1096 if (number_uses[i] > 0) 1097 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p); 1098 1099 OPENSSL_free(number_uses); 1100 return(1); 1101 } 1102 1103 static int ssl_cipher_process_rulestr(const char *rule_str, 1104 CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p, 1105 const SSL_CIPHER **ca_list) 1106 { 1107 unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength; 1108 const char *l, *buf; 1109 int j, multi, found, rule, retval, ok, buflen; 1110 unsigned long cipher_id = 0; 1111 char ch; 1112 1113 retval = 1; 1114 l = rule_str; 1115 for (;;) 1116 { 1117 ch = *l; 1118 1119 if (ch == '\0') 1120 break; /* done */ 1121 if (ch == '-') 1122 { rule = CIPHER_DEL; l++; } 1123 else if (ch == '+') 1124 { rule = CIPHER_ORD; l++; } 1125 else if (ch == '!') 1126 { rule = CIPHER_KILL; l++; } 1127 else if (ch == '@') 1128 { rule = CIPHER_SPECIAL; l++; } 1129 else 1130 { rule = CIPHER_ADD; } 1131 1132 if (ITEM_SEP(ch)) 1133 { 1134 l++; 1135 continue; 1136 } 1137 1138 alg_mkey = 0; 1139 alg_auth = 0; 1140 alg_enc = 0; 1141 alg_mac = 0; 1142 alg_ssl = 0; 1143 algo_strength = 0; 1144 1145 for (;;) 1146 { 1147 ch = *l; 1148 buf = l; 1149 buflen = 0; 1150 #ifndef CHARSET_EBCDIC 1151 while ( ((ch >= 'A') && (ch <= 'Z')) || 1152 ((ch >= '0') && (ch <= '9')) || 1153 ((ch >= 'a') && (ch <= 'z')) || 1154 (ch == '-') || (ch == '.')) 1155 #else 1156 while ( isalnum(ch) || (ch == '-') || (ch == '.')) 1157 #endif 1158 { 1159 ch = *(++l); 1160 buflen++; 1161 } 1162 1163 if (buflen == 0) 1164 { 1165 /* 1166 * We hit something we cannot deal with, 1167 * it is no command or separator nor 1168 * alphanumeric, so we call this an error. 1169 */ 1170 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1171 SSL_R_INVALID_COMMAND); 1172 retval = found = 0; 1173 l++; 1174 break; 1175 } 1176 1177 if (rule == CIPHER_SPECIAL) 1178 { 1179 found = 0; /* unused -- avoid compiler warning */ 1180 break; /* special treatment */ 1181 } 1182 1183 /* check for multi-part specification */ 1184 if (ch == '+') 1185 { 1186 multi=1; 1187 l++; 1188 } 1189 else 1190 multi=0; 1191 1192 /* 1193 * Now search for the cipher alias in the ca_list. Be careful 1194 * with the strncmp, because the "buflen" limitation 1195 * will make the rule "ADH:SOME" and the cipher 1196 * "ADH-MY-CIPHER" look like a match for buflen=3. 1197 * So additionally check whether the cipher name found 1198 * has the correct length. We can save a strlen() call: 1199 * just checking for the '\0' at the right place is 1200 * sufficient, we have to strncmp() anyway. (We cannot 1201 * use strcmp(), because buf is not '\0' terminated.) 1202 */ 1203 j = found = 0; 1204 cipher_id = 0; 1205 while (ca_list[j]) 1206 { 1207 if (!strncmp(buf, ca_list[j]->name, buflen) && 1208 (ca_list[j]->name[buflen] == '\0')) 1209 { 1210 found = 1; 1211 break; 1212 } 1213 else 1214 j++; 1215 } 1216 1217 if (!found) 1218 break; /* ignore this entry */ 1219 1220 if (ca_list[j]->algorithm_mkey) 1221 { 1222 if (alg_mkey) 1223 { 1224 alg_mkey &= ca_list[j]->algorithm_mkey; 1225 if (!alg_mkey) { found = 0; break; } 1226 } 1227 else 1228 alg_mkey = ca_list[j]->algorithm_mkey; 1229 } 1230 1231 if (ca_list[j]->algorithm_auth) 1232 { 1233 if (alg_auth) 1234 { 1235 alg_auth &= ca_list[j]->algorithm_auth; 1236 if (!alg_auth) { found = 0; break; } 1237 } 1238 else 1239 alg_auth = ca_list[j]->algorithm_auth; 1240 } 1241 1242 if (ca_list[j]->algorithm_enc) 1243 { 1244 if (alg_enc) 1245 { 1246 alg_enc &= ca_list[j]->algorithm_enc; 1247 if (!alg_enc) { found = 0; break; } 1248 } 1249 else 1250 alg_enc = ca_list[j]->algorithm_enc; 1251 } 1252 1253 if (ca_list[j]->algorithm_mac) 1254 { 1255 if (alg_mac) 1256 { 1257 alg_mac &= ca_list[j]->algorithm_mac; 1258 if (!alg_mac) { found = 0; break; } 1259 } 1260 else 1261 alg_mac = ca_list[j]->algorithm_mac; 1262 } 1263 1264 if (ca_list[j]->algo_strength & SSL_EXP_MASK) 1265 { 1266 if (algo_strength & SSL_EXP_MASK) 1267 { 1268 algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK; 1269 if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; } 1270 } 1271 else 1272 algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; 1273 } 1274 1275 if (ca_list[j]->algo_strength & SSL_STRONG_MASK) 1276 { 1277 if (algo_strength & SSL_STRONG_MASK) 1278 { 1279 algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK; 1280 if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; } 1281 } 1282 else 1283 algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK; 1284 } 1285 1286 if (ca_list[j]->valid) 1287 { 1288 /* explicit ciphersuite found; its protocol version 1289 * does not become part of the search pattern!*/ 1290 1291 cipher_id = ca_list[j]->id; 1292 } 1293 else 1294 { 1295 /* not an explicit ciphersuite; only in this case, the 1296 * protocol version is considered part of the search pattern */ 1297 1298 if (ca_list[j]->algorithm_ssl) 1299 { 1300 if (alg_ssl) 1301 { 1302 alg_ssl &= ca_list[j]->algorithm_ssl; 1303 if (!alg_ssl) { found = 0; break; } 1304 } 1305 else 1306 alg_ssl = ca_list[j]->algorithm_ssl; 1307 } 1308 } 1309 1310 if (!multi) break; 1311 } 1312 1313 /* 1314 * Ok, we have the rule, now apply it 1315 */ 1316 if (rule == CIPHER_SPECIAL) 1317 { /* special command */ 1318 ok = 0; 1319 if ((buflen == 8) && 1320 !strncmp(buf, "STRENGTH", 8)) 1321 ok = ssl_cipher_strength_sort(head_p, tail_p); 1322 else 1323 SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, 1324 SSL_R_INVALID_COMMAND); 1325 if (ok == 0) 1326 retval = 0; 1327 /* 1328 * We do not support any "multi" options 1329 * together with "@", so throw away the 1330 * rest of the command, if any left, until 1331 * end or ':' is found. 1332 */ 1333 while ((*l != '\0') && !ITEM_SEP(*l)) 1334 l++; 1335 } 1336 else if (found) 1337 { 1338 ssl_cipher_apply_rule(cipher_id, 1339 alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, 1340 rule, -1, head_p, tail_p); 1341 } 1342 else 1343 { 1344 while ((*l != '\0') && !ITEM_SEP(*l)) 1345 l++; 1346 } 1347 if (*l == '\0') break; /* done */ 1348 } 1349 1350 return(retval); 1351 } 1352 1353 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, 1354 STACK_OF(SSL_CIPHER) **cipher_list, 1355 STACK_OF(SSL_CIPHER) **cipher_list_by_id, 1356 const char *rule_str) 1357 { 1358 int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases; 1359 unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl; 1360 STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; 1361 const char *rule_p; 1362 CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; 1363 const SSL_CIPHER **ca_list = NULL; 1364 1365 /* 1366 * Return with error if nothing to do. 1367 */ 1368 if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) 1369 return NULL; 1370 1371 /* 1372 * To reduce the work to do we only want to process the compiled 1373 * in algorithms, so we first get the mask of disabled ciphers. 1374 */ 1375 ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl); 1376 1377 /* 1378 * Now we have to collect the available ciphers from the compiled 1379 * in ciphers. We cannot get more than the number compiled in, so 1380 * it is used for allocation. 1381 */ 1382 num_of_ciphers = ssl_method->num_ciphers(); 1383 #ifdef KSSL_DEBUG 1384 printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers); 1385 #endif /* KSSL_DEBUG */ 1386 co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers); 1387 if (co_list == NULL) 1388 { 1389 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1390 return(NULL); /* Failure */ 1391 } 1392 1393 ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, 1394 disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl, 1395 co_list, &head, &tail); 1396 1397 1398 /* Now arrange all ciphers by preference: */ 1399 1400 /* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */ 1401 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1402 ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1403 1404 /* AES is our preferred symmetric cipher */ 1405 ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1406 1407 /* Temporarily enable everything else for sorting */ 1408 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); 1409 1410 /* Low priority for MD5 */ 1411 ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail); 1412 1413 /* Move anonymous ciphers to the end. Usually, these will remain disabled. 1414 * (For applications that allow them, they aren't too bad, but we prefer 1415 * authenticated ciphers.) */ 1416 ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1417 1418 /* Move ciphers without forward secrecy to the end */ 1419 ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1420 /* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */ 1421 ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1422 ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1423 ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1424 1425 /* RC4 is sort-of broken -- move the the end */ 1426 ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); 1427 1428 /* Now sort by symmetric encryption strength. The above ordering remains 1429 * in force within each class */ 1430 if (!ssl_cipher_strength_sort(&head, &tail)) 1431 { 1432 OPENSSL_free(co_list); 1433 return NULL; 1434 } 1435 1436 /* Now disable everything (maintaining the ordering!) */ 1437 ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); 1438 1439 1440 /* 1441 * We also need cipher aliases for selecting based on the rule_str. 1442 * There might be two types of entries in the rule_str: 1) names 1443 * of ciphers themselves 2) aliases for groups of ciphers. 1444 * For 1) we need the available ciphers and for 2) the cipher 1445 * groups of cipher_aliases added together in one list (otherwise 1446 * we would be happy with just the cipher_aliases table). 1447 */ 1448 num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); 1449 num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1; 1450 ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max); 1451 if (ca_list == NULL) 1452 { 1453 OPENSSL_free(co_list); 1454 SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); 1455 return(NULL); /* Failure */ 1456 } 1457 ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, 1458 disabled_mkey, disabled_auth, disabled_enc, 1459 disabled_mac, disabled_ssl, head); 1460 1461 /* 1462 * If the rule_string begins with DEFAULT, apply the default rule 1463 * before using the (possibly available) additional rules. 1464 */ 1465 ok = 1; 1466 rule_p = rule_str; 1467 if (strncmp(rule_str,"DEFAULT",7) == 0) 1468 { 1469 ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, 1470 &head, &tail, ca_list); 1471 rule_p += 7; 1472 if (*rule_p == ':') 1473 rule_p++; 1474 } 1475 1476 if (ok && (strlen(rule_p) > 0)) 1477 ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list); 1478 1479 OPENSSL_free((void *)ca_list); /* Not needed anymore */ 1480 1481 if (!ok) 1482 { /* Rule processing failure */ 1483 OPENSSL_free(co_list); 1484 return(NULL); 1485 } 1486 1487 /* 1488 * Allocate new "cipherstack" for the result, return with error 1489 * if we cannot get one. 1490 */ 1491 if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) 1492 { 1493 OPENSSL_free(co_list); 1494 return(NULL); 1495 } 1496 1497 /* 1498 * The cipher selection for the list is done. The ciphers are added 1499 * to the resulting precedence to the STACK_OF(SSL_CIPHER). 1500 */ 1501 for (curr = head; curr != NULL; curr = curr->next) 1502 { 1503 #ifdef OPENSSL_FIPS 1504 if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS)) 1505 #else 1506 if (curr->active) 1507 #endif 1508 { 1509 sk_SSL_CIPHER_push(cipherstack, curr->cipher); 1510 #ifdef CIPHER_DEBUG 1511 printf("<%s>\n",curr->cipher->name); 1512 #endif 1513 } 1514 } 1515 OPENSSL_free(co_list); /* Not needed any longer */ 1516 1517 tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); 1518 if (tmp_cipher_list == NULL) 1519 { 1520 sk_SSL_CIPHER_free(cipherstack); 1521 return NULL; 1522 } 1523 if (*cipher_list != NULL) 1524 sk_SSL_CIPHER_free(*cipher_list); 1525 *cipher_list = cipherstack; 1526 if (*cipher_list_by_id != NULL) 1527 sk_SSL_CIPHER_free(*cipher_list_by_id); 1528 *cipher_list_by_id = tmp_cipher_list; 1529 (void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp); 1530 1531 sk_SSL_CIPHER_sort(*cipher_list_by_id); 1532 return(cipherstack); 1533 } 1534 1535 char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) 1536 { 1537 int is_export,pkl,kl; 1538 const char *ver,*exp_str; 1539 const char *kx,*au,*enc,*mac; 1540 unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2; 1541 #ifdef KSSL_DEBUG 1542 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n"; 1543 #else 1544 static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; 1545 #endif /* KSSL_DEBUG */ 1546 1547 alg_mkey = cipher->algorithm_mkey; 1548 alg_auth = cipher->algorithm_auth; 1549 alg_enc = cipher->algorithm_enc; 1550 alg_mac = cipher->algorithm_mac; 1551 alg_ssl = cipher->algorithm_ssl; 1552 1553 alg2=cipher->algorithm2; 1554 1555 is_export=SSL_C_IS_EXPORT(cipher); 1556 pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); 1557 kl=SSL_C_EXPORT_KEYLENGTH(cipher); 1558 exp_str=is_export?" export":""; 1559 1560 if (alg_ssl & SSL_SSLV2) 1561 ver="SSLv2"; 1562 else if (alg_ssl & SSL_SSLV3) 1563 ver="SSLv3"; 1564 else if (alg_ssl & SSL_TLSV1_2) 1565 ver="TLSv1.2"; 1566 else 1567 ver="unknown"; 1568 1569 switch (alg_mkey) 1570 { 1571 case SSL_kRSA: 1572 kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; 1573 break; 1574 case SSL_kDHr: 1575 kx="DH/RSA"; 1576 break; 1577 case SSL_kDHd: 1578 kx="DH/DSS"; 1579 break; 1580 case SSL_kKRB5: 1581 kx="KRB5"; 1582 break; 1583 case SSL_kEDH: 1584 kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; 1585 break; 1586 case SSL_kECDHr: 1587 kx="ECDH/RSA"; 1588 break; 1589 case SSL_kECDHe: 1590 kx="ECDH/ECDSA"; 1591 break; 1592 case SSL_kEECDH: 1593 kx="ECDH"; 1594 break; 1595 case SSL_kPSK: 1596 kx="PSK"; 1597 break; 1598 case SSL_kSRP: 1599 kx="SRP"; 1600 break; 1601 default: 1602 kx="unknown"; 1603 } 1604 1605 switch (alg_auth) 1606 { 1607 case SSL_aRSA: 1608 au="RSA"; 1609 break; 1610 case SSL_aDSS: 1611 au="DSS"; 1612 break; 1613 case SSL_aDH: 1614 au="DH"; 1615 break; 1616 case SSL_aKRB5: 1617 au="KRB5"; 1618 break; 1619 case SSL_aECDH: 1620 au="ECDH"; 1621 break; 1622 case SSL_aNULL: 1623 au="None"; 1624 break; 1625 case SSL_aECDSA: 1626 au="ECDSA"; 1627 break; 1628 case SSL_aPSK: 1629 au="PSK"; 1630 break; 1631 default: 1632 au="unknown"; 1633 break; 1634 } 1635 1636 switch (alg_enc) 1637 { 1638 case SSL_DES: 1639 enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; 1640 break; 1641 case SSL_3DES: 1642 enc="3DES(168)"; 1643 break; 1644 case SSL_RC4: 1645 enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") 1646 :((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); 1647 break; 1648 case SSL_RC2: 1649 enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; 1650 break; 1651 case SSL_IDEA: 1652 enc="IDEA(128)"; 1653 break; 1654 case SSL_eNULL: 1655 enc="None"; 1656 break; 1657 case SSL_AES128: 1658 enc="AES(128)"; 1659 break; 1660 case SSL_AES256: 1661 enc="AES(256)"; 1662 break; 1663 case SSL_AES128GCM: 1664 enc="AESGCM(128)"; 1665 break; 1666 case SSL_AES256GCM: 1667 enc="AESGCM(256)"; 1668 break; 1669 case SSL_CAMELLIA128: 1670 enc="Camellia(128)"; 1671 break; 1672 case SSL_CAMELLIA256: 1673 enc="Camellia(256)"; 1674 break; 1675 case SSL_SEED: 1676 enc="SEED(128)"; 1677 break; 1678 default: 1679 enc="unknown"; 1680 break; 1681 } 1682 1683 switch (alg_mac) 1684 { 1685 case SSL_MD5: 1686 mac="MD5"; 1687 break; 1688 case SSL_SHA1: 1689 mac="SHA1"; 1690 break; 1691 case SSL_SHA256: 1692 mac="SHA256"; 1693 break; 1694 case SSL_SHA384: 1695 mac="SHA384"; 1696 break; 1697 case SSL_AEAD: 1698 mac="AEAD"; 1699 break; 1700 default: 1701 mac="unknown"; 1702 break; 1703 } 1704 1705 if (buf == NULL) 1706 { 1707 len=128; 1708 buf=OPENSSL_malloc(len); 1709 if (buf == NULL) return("OPENSSL_malloc Error"); 1710 } 1711 else if (len < 128) 1712 return("Buffer too small"); 1713 1714 #ifdef KSSL_DEBUG 1715 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl); 1716 #else 1717 BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); 1718 #endif /* KSSL_DEBUG */ 1719 return(buf); 1720 } 1721 1722 char *SSL_CIPHER_get_version(const SSL_CIPHER *c) 1723 { 1724 int i; 1725 1726 if (c == NULL) return("(NONE)"); 1727 i=(int)(c->id>>24L); 1728 if (i == 3) 1729 return("TLSv1/SSLv3"); 1730 else if (i == 2) 1731 return("SSLv2"); 1732 else 1733 return("unknown"); 1734 } 1735 1736 /* return the actual cipher being used */ 1737 const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) 1738 { 1739 if (c != NULL) 1740 return(c->name); 1741 return("(NONE)"); 1742 } 1743 1744 /* number of bits for symmetric cipher */ 1745 int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) 1746 { 1747 int ret=0; 1748 1749 if (c != NULL) 1750 { 1751 if (alg_bits != NULL) *alg_bits = c->alg_bits; 1752 ret = c->strength_bits; 1753 } 1754 return(ret); 1755 } 1756 1757 unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c) 1758 { 1759 return c->id; 1760 } 1761 1762 /* return string version of key exchange algorithm */ 1763 const char* SSL_CIPHER_authentication_method(const SSL_CIPHER* cipher) 1764 { 1765 switch (cipher->algorithm_mkey) 1766 { 1767 case SSL_kRSA: 1768 return SSL_TXT_RSA; 1769 case SSL_kDHr: 1770 return SSL_TXT_DH "_" SSL_TXT_RSA; 1771 case SSL_kDHd: 1772 return SSL_TXT_DH "_" SSL_TXT_DSS; 1773 case SSL_kEDH: 1774 switch (cipher->algorithm_auth) 1775 { 1776 case SSL_aDSS: 1777 return "DHE_" SSL_TXT_DSS; 1778 case SSL_aRSA: 1779 return "DHE_" SSL_TXT_RSA; 1780 case SSL_aNULL: 1781 return SSL_TXT_DH "_anon"; 1782 default: 1783 return "UNKNOWN"; 1784 } 1785 case SSL_kKRB5: 1786 return SSL_TXT_KRB5; 1787 case SSL_kECDHr: 1788 return SSL_TXT_ECDH "_" SSL_TXT_RSA; 1789 case SSL_kECDHe: 1790 return SSL_TXT_ECDH "_" SSL_TXT_ECDSA; 1791 case SSL_kEECDH: 1792 switch (cipher->algorithm_auth) 1793 { 1794 case SSL_aECDSA: 1795 return "ECDHE_" SSL_TXT_ECDSA; 1796 case SSL_aRSA: 1797 return "ECDHE_" SSL_TXT_RSA; 1798 case SSL_aNULL: 1799 return SSL_TXT_ECDH "_anon"; 1800 default: 1801 return "UNKNOWN"; 1802 } 1803 default: 1804 return "UNKNOWN"; 1805 } 1806 } 1807 1808 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n) 1809 { 1810 SSL_COMP *ctmp; 1811 int i,nn; 1812 1813 if ((n == 0) || (sk == NULL)) return(NULL); 1814 nn=sk_SSL_COMP_num(sk); 1815 for (i=0; i<nn; i++) 1816 { 1817 ctmp=sk_SSL_COMP_value(sk,i); 1818 if (ctmp->id == n) 1819 return(ctmp); 1820 } 1821 return(NULL); 1822 } 1823 1824 #ifdef OPENSSL_NO_COMP 1825 void *SSL_COMP_get_compression_methods(void) 1826 { 1827 return NULL; 1828 } 1829 int SSL_COMP_add_compression_method(int id, void *cm) 1830 { 1831 return 1; 1832 } 1833 1834 const char *SSL_COMP_get_name(const void *comp) 1835 { 1836 return NULL; 1837 } 1838 #else 1839 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void) 1840 { 1841 load_builtin_compressions(); 1842 return(ssl_comp_methods); 1843 } 1844 1845 int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) 1846 { 1847 SSL_COMP *comp; 1848 1849 if (cm == NULL || cm->type == NID_undef) 1850 return 1; 1851 1852 /* According to draft-ietf-tls-compression-04.txt, the 1853 compression number ranges should be the following: 1854 1855 0 to 63: methods defined by the IETF 1856 64 to 192: external party methods assigned by IANA 1857 193 to 255: reserved for private use */ 1858 if (id < 193 || id > 255) 1859 { 1860 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); 1861 return 0; 1862 } 1863 1864 MemCheck_off(); 1865 comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP)); 1866 comp->id=id; 1867 comp->method=cm; 1868 load_builtin_compressions(); 1869 if (ssl_comp_methods 1870 && sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0) 1871 { 1872 OPENSSL_free(comp); 1873 MemCheck_on(); 1874 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); 1875 return(1); 1876 } 1877 else if ((ssl_comp_methods == NULL) 1878 || !sk_SSL_COMP_push(ssl_comp_methods,comp)) 1879 { 1880 OPENSSL_free(comp); 1881 MemCheck_on(); 1882 SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); 1883 return(1); 1884 } 1885 else 1886 { 1887 MemCheck_on(); 1888 return(0); 1889 } 1890 } 1891 1892 const char *SSL_COMP_get_name(const COMP_METHOD *comp) 1893 { 1894 if (comp) 1895 return comp->name; 1896 return NULL; 1897 } 1898 1899 #endif 1900
