des.h

00001 /**
00002  * @file des.h
00003  * @brief DES (Data Encryption Standard)
00004  *
00005  * @section License
00006  *
00007  * Copyright (C) 2010-2017 Oryx Embedded SARL. All rights reserved.
00008  *
00009  * This file is part of CycloneCrypto Open.
00010  *
00011  * This program is free software; you can redistribute it and/or
00012  * modify it under the terms of the GNU General Public License
00013  * as published by the Free Software Foundation; either version 2
00014  * of the License, or (at your option) any later version.
00015  *
00016  * This program is distributed in the hope that it will be useful,
00017  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019  * GNU General Public License for more details.
00020  *
00021  * You should have received a copy of the GNU General Public License
00022  * along with this program; if not, write to the Free Software Foundation,
00023  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
00024  *
00025  * @author Oryx Embedded SARL (www.oryx-embedded.com)
00026  * @version 1.7.6
00027  **/
00028 
00029 #ifndef _DES_H
00030 #define _DES_H
00031 
00032 //Dependencies
00033 #include "crypto.h"
00034 
00035 //DES block size
00036 #define DES_BLOCK_SIZE 8
00037 //Common interface for encryption algorithms
00038 #define DES_CIPHER_ALGO (&desCipherAlgo)
00039 
00040 
00041 /**
00042  * @brief DES algorithm context
00043  **/
00044 
00045 typedef struct
00046 {
00047    uint32_t ks[32];
00048 } DesContext;
00049 
00050 
00051 //DES related constants
00052 extern const CipherAlgo desCipherAlgo;
00053 
00054 //DES related functions
00055 error_t desInit(DesContext *context, const uint8_t *key, size_t keyLength);
00056 void desEncryptBlock(DesContext *context, const uint8_t *input, uint8_t *output);
00057 void desDecryptBlock(DesContext *context, const uint8_t *input, uint8_t *output);
00058 
00059 #endif
00060