poly1305.h

00001 /**
00002  * @file poly1305.h
00003  * @brief Poly1305 message-authentication code
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 _POLY1305_H
00030 #define _POLY1305_H
00031 
00032 //Dependencies
00033 #include "crypto.h"
00034 #include "mpi.h"
00035 
00036 
00037 /**
00038  * @brief Poly1305 context
00039  **/
00040 
00041 typedef struct
00042 {
00043    uint32_t r[4];
00044    uint32_t s[4];
00045    uint64_t a[8];
00046    uint8_t buffer[17];
00047    size_t size;
00048 } Poly1305Context;
00049 
00050 
00051 //Poly1305 related functions
00052 void poly1305Init(Poly1305Context *context, const uint8_t *key);
00053 void poly1305Update(Poly1305Context *context, const void *data, size_t length);
00054 void poly1305Final(Poly1305Context *context, uint8_t *tag);
00055 
00056 void poly1305ProcessBlock(Poly1305Context *context);
00057 
00058 #endif
00059