80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/**
|
|
* \file xtea.h
|
|
*
|
|
* Copyright (C) 2006-2009, Paul Bakker <polarssl_maintainer at polarssl.org>
|
|
* All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
#ifndef POLARSSL_XTEA_H
|
|
#define POLARSSL_XTEA_H
|
|
|
|
#ifdef _MSC_VER
|
|
#include <basetsd.h>
|
|
typedef UINT32 uint32_t;
|
|
#else
|
|
#include <inttypes.h>
|
|
#endif
|
|
|
|
#define XTEA_ENCRYPT 1
|
|
#define XTEA_DECRYPT 0
|
|
|
|
|
|
/**
|
|
* \brief XTEA context structure
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint32_t k[4]; /*!< key */
|
|
}
|
|
xtea_context;
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* \brief XTEA key schedule
|
|
*
|
|
* \param ctx XTEA context to be initialized
|
|
* \param key the secret key
|
|
*/
|
|
void xtea_setup( xtea_context *ctx, unsigned char key[16] );
|
|
|
|
/**
|
|
* \brief XTEA cipher function
|
|
*
|
|
* \param ctx XTEA context
|
|
* \param mode XTEA_ENCRYPT or XTEA_DECRYPT
|
|
* \param input 8-byte input block
|
|
* \param output 8-byte output block
|
|
*/
|
|
void xtea_crypt_ecb( xtea_context *ctx,
|
|
int mode,
|
|
unsigned char input[8],
|
|
unsigned char output[8] );
|
|
|
|
/*
|
|
* \brief Checkup routine
|
|
*
|
|
* \return 0 if successful, or 1 if the test failed
|
|
*/
|
|
int xtea_self_test( int verbose );
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* xtea.h */
|