2009-01-04 19:15:48 +01:00
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/**
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* \file xtea.h
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*
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2009-01-25 15:15:10 +01:00
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* Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
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2009-01-04 19:15:48 +01:00
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef POLARSSL_XTEA_H
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#define POLARSSL_XTEA_H
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#define XTEA_ENCRYPT 1
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#define XTEA_DECRYPT 0
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/**
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* \brief XTEA context structure
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*/
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typedef struct
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{
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unsigned long k[4]; /*!< key */
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}
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xtea_context;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief XTEA key schedule
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*
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* \param ctx XTEA context to be initialized
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* \param key the secret key
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*/
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void xtea_setup( xtea_context *ctx, unsigned char key[16] );
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/**
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* \brief XTEA cipher function
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*
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* \param ctx XTEA context
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* \param mode XTEA_ENCRYPT or XTEA_DECRYPT
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* \param input 8-byte input block
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* \param output 8-byte output block
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*/
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void xtea_crypt( xtea_context *ctx,
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int mode,
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unsigned char input[8],
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unsigned char output[8] );
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/*
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* \brief Checkup routine
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*
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* \return 0 if successful, or 1 if the test failed
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*/
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int xtea_self_test( int verbose );
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#ifdef __cplusplus
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}
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#endif
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#endif /* xtea.h */
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