174664626SKris Kennaway /* crypto/evp/e_xcbc_d.c */ 274664626SKris Kennaway /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 374664626SKris Kennaway * All rights reserved. 474664626SKris Kennaway * 574664626SKris Kennaway * This package is an SSL implementation written 674664626SKris Kennaway * by Eric Young (eay@cryptsoft.com). 774664626SKris Kennaway * The implementation was written so as to conform with Netscapes SSL. 874664626SKris Kennaway * 974664626SKris Kennaway * This library is free for commercial and non-commercial use as long as 1074664626SKris Kennaway * the following conditions are aheared to. The following conditions 1174664626SKris Kennaway * apply to all code found in this distribution, be it the RC4, RSA, 1274664626SKris Kennaway * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1374664626SKris Kennaway * included with this distribution is covered by the same copyright terms 1474664626SKris Kennaway * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1574664626SKris Kennaway * 1674664626SKris Kennaway * Copyright remains Eric Young's, and as such any Copyright notices in 1774664626SKris Kennaway * the code are not to be removed. 1874664626SKris Kennaway * If this package is used in a product, Eric Young should be given attribution 1974664626SKris Kennaway * as the author of the parts of the library used. 2074664626SKris Kennaway * This can be in the form of a textual message at program startup or 2174664626SKris Kennaway * in documentation (online or textual) provided with the package. 2274664626SKris Kennaway * 2374664626SKris Kennaway * Redistribution and use in source and binary forms, with or without 2474664626SKris Kennaway * modification, are permitted provided that the following conditions 2574664626SKris Kennaway * are met: 2674664626SKris Kennaway * 1. Redistributions of source code must retain the copyright 2774664626SKris Kennaway * notice, this list of conditions and the following disclaimer. 2874664626SKris Kennaway * 2. Redistributions in binary form must reproduce the above copyright 2974664626SKris Kennaway * notice, this list of conditions and the following disclaimer in the 3074664626SKris Kennaway * documentation and/or other materials provided with the distribution. 3174664626SKris Kennaway * 3. All advertising materials mentioning features or use of this software 3274664626SKris Kennaway * must display the following acknowledgement: 3374664626SKris Kennaway * "This product includes cryptographic software written by 3474664626SKris Kennaway * Eric Young (eay@cryptsoft.com)" 3574664626SKris Kennaway * The word 'cryptographic' can be left out if the rouines from the library 3674664626SKris Kennaway * being used are not cryptographic related :-). 3774664626SKris Kennaway * 4. If you include any Windows specific code (or a derivative thereof) from 3874664626SKris Kennaway * the apps directory (application code) you must include an acknowledgement: 3974664626SKris Kennaway * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4074664626SKris Kennaway * 4174664626SKris Kennaway * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4274664626SKris Kennaway * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4374664626SKris Kennaway * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4474664626SKris Kennaway * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4574664626SKris Kennaway * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4674664626SKris Kennaway * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4774664626SKris Kennaway * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4874664626SKris Kennaway * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4974664626SKris Kennaway * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5074664626SKris Kennaway * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5174664626SKris Kennaway * SUCH DAMAGE. 5274664626SKris Kennaway * 5374664626SKris Kennaway * The licence and distribution terms for any publically available version or 5474664626SKris Kennaway * derivative of this code cannot be changed. i.e. this code cannot simply be 5574664626SKris Kennaway * copied and put under another distribution licence 5674664626SKris Kennaway * [including the GNU Public Licence.] 5774664626SKris Kennaway */ 5874664626SKris Kennaway 595c87c606SMark Murray #ifndef OPENSSL_NO_DES 6074664626SKris Kennaway #include <stdio.h> 6174664626SKris Kennaway #include "cryptlib.h" 6274664626SKris Kennaway #include <openssl/evp.h> 6374664626SKris Kennaway #include <openssl/objects.h> 645c87c606SMark Murray #include <openssl/des.h> 6574664626SKris Kennaway 66ddd58736SKris Kennaway static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 67ddd58736SKris Kennaway const unsigned char *iv,int enc); 68ddd58736SKris Kennaway static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 69ddd58736SKris Kennaway const unsigned char *in, unsigned int inl); 705c87c606SMark Murray 715c87c606SMark Murray 725c87c606SMark Murray typedef struct 735c87c606SMark Murray { 745c87c606SMark Murray DES_key_schedule ks;/* key schedule */ 755c87c606SMark Murray DES_cblock inw; 765c87c606SMark Murray DES_cblock outw; 775c87c606SMark Murray } DESX_CBC_KEY; 785c87c606SMark Murray 795c87c606SMark Murray #define data(ctx) ((DESX_CBC_KEY *)(ctx)->cipher_data) 805c87c606SMark Murray 815c87c606SMark Murray static const EVP_CIPHER d_xcbc_cipher= 8274664626SKris Kennaway { 8374664626SKris Kennaway NID_desx_cbc, 8474664626SKris Kennaway 8,24,8, 85ddd58736SKris Kennaway EVP_CIPH_CBC_MODE, 8674664626SKris Kennaway desx_cbc_init_key, 8774664626SKris Kennaway desx_cbc_cipher, 8874664626SKris Kennaway NULL, 895c87c606SMark Murray sizeof(DESX_CBC_KEY), 9074664626SKris Kennaway EVP_CIPHER_set_asn1_iv, 9174664626SKris Kennaway EVP_CIPHER_get_asn1_iv, 92ddd58736SKris Kennaway NULL 9374664626SKris Kennaway }; 9474664626SKris Kennaway 955c87c606SMark Murray const EVP_CIPHER *EVP_desx_cbc(void) 9674664626SKris Kennaway { 9774664626SKris Kennaway return(&d_xcbc_cipher); 9874664626SKris Kennaway } 9974664626SKris Kennaway 100ddd58736SKris Kennaway static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 101ddd58736SKris Kennaway const unsigned char *iv, int enc) 10274664626SKris Kennaway { 1035c87c606SMark Murray DES_cblock *deskey = (DES_cblock *)key; 10474664626SKris Kennaway 1055c87c606SMark Murray DES_set_key_unchecked(deskey,&data(ctx)->ks); 1065c87c606SMark Murray memcpy(&data(ctx)->inw[0],&key[8],8); 1075c87c606SMark Murray memcpy(&data(ctx)->outw[0],&key[16],8); 108ddd58736SKris Kennaway 109ddd58736SKris Kennaway return 1; 11074664626SKris Kennaway } 11174664626SKris Kennaway 112ddd58736SKris Kennaway static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 113ddd58736SKris Kennaway const unsigned char *in, unsigned int inl) 11474664626SKris Kennaway { 1155c87c606SMark Murray DES_xcbc_encrypt(in,out,inl,&data(ctx)->ks, 1165c87c606SMark Murray (DES_cblock *)&(ctx->iv[0]), 1175c87c606SMark Murray &data(ctx)->inw, 1185c87c606SMark Murray &data(ctx)->outw, 11974664626SKris Kennaway ctx->encrypt); 120ddd58736SKris Kennaway return 1; 12174664626SKris Kennaway } 12274664626SKris Kennaway #endif 123