md2.h

00001 /**
00002  * @file md2.h
00003  * @brief MD2 (Message-Digest Algorithm)
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 _MD2_H
00030 #define _MD2_H
00031 
00032 //Dependencies
00033 #include "crypto.h"
00034 
00035 //MD2 block size
00036 #define MD2_BLOCK_SIZE 16
00037 //MD2 digest size
00038 #define MD2_DIGEST_SIZE 16
00039 //Common interface for hash algorithms
00040 #define MD2_HASH_ALGO (&md2HashAlgo)
00041 
00042 
00043 /**
00044  * @brief MD2 algorithm context
00045  **/
00046 
00047 typedef struct
00048 {
00049 
00050    union
00051    {
00052       uint8_t x[48];
00053       uint8_t digest[16];
00054    };
00055    uint8_t m[16];
00056    uint8_t c[16];
00057    size_t size;
00058 } Md2Context;
00059 
00060 
00061 //MD2 related constants
00062 extern const HashAlgo md2HashAlgo;
00063 
00064 //MD2 related functions
00065 error_t md2Compute(const void *data, size_t length, uint8_t *digest);
00066 void md2Init(Md2Context *context);
00067 void md2Update(Md2Context *context, const void *data, size_t length);
00068 void md2Final(Md2Context *context, uint8_t *digest);
00069 void md2ProcessBlock(const uint8_t *m, uint8_t *x, uint8_t *c);
00070 
00071 #endif
00072