flaneth

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/* flaneth - flash and ethernet - dartboard mod
 * version 0.1 date 2008-11-09
 * Copyright (C) 2007-2008 Stefan Schuermans <stefan@schuermans.info>
 * Copyleft: GNU public license V2 - http://www.gnu.org/copyleft/gpl.html
 * a BlinkenArea project - http://www.blinkenarea.org/
 */
#ifndef INC_xtea
#define INC_xtea
#include <stdint.h>
// XTEA encryption
// rounds should be at least 32
// p_in == p_out is allowed
// p_prev must be initialized to zero before first call to this function
extern void xtea_enc( uint32_t key[4], uint8_t rounds, uint64_t * p_in, uint64_t * p_out, unsigned int block_cnt, uint64_t * p_prev );
// XTEA decryption
// rounds should be at least 32
// p_in == p_out is allowed
// p_prev must be initialized to zero before first call to this function
extern void xtea_dec( uint32_t key[4], uint8_t rounds, uint64_t * p_in, uint64_t * p_out, unsigned int block_cnt, uint64_t * p_prev );
#endif // #ifndef INC_xtea
 
 
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