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/*
* Copyright (C) 2016 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*/
/**
* @defgroup chapoly_xof chapoly_xof
* @{ @ingroup chapoly
*/
#ifndef CHAPOLY_XOF_H_
#define CHAPOLY_XOF_H_
#include <crypto/aead.h>
typedef struct chapoly_xof_t chapoly_xof_t;
/**
* ChaCha20 XOF implementation
*
* Based on RFC 7539 ChaCha20 stream initialized with block counter = 1
*/
struct chapoly_xof_t {
/**
* Generic xof_t interface for this Extended Output Function (XOF).
*/
xof_t xof_interface;
};
/**
* Create a chapoly_xof instance.
*
* @param algorithm XOF_CHACHA20
* @return chapoly_xof_t object, NULL if not supported
*/
chapoly_xof_t *chapoly_xof_create(ext_out_function_t algorithm);
#endif /** CHAPOLY_XOF_H_ @}*/
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