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/*
* Copyright (C) 2015 Martin Willi
* Copyright (C) 2015 revosec AG
*
* 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 curve25519_drv curve25519_drv
* @{ @ingroup curve25519_p
*/
#ifndef CURVE25519_DRV_H_
#define CURVE25519_DRV_H_
typedef struct curve25519_drv_t curve25519_drv_t;
#include <library.h>
/**
* Private key size of Curve25519
*/
#define CURVE25519_KEY_SIZE 32
/**
* Backend driver abstraction for Curve25519.
*/
struct curve25519_drv_t {
/**
* Set the private key.
*
* @param key 32 byte private key, clamped
* @return TRUE if key set
*/
bool (*set_key)(curve25519_drv_t *this, u_char *key);
/**
* Calculate Curve25519 for the set key.
*
* @param in input data, 32 bytes
* @param out output data, 32 bytes
* @return TRUE if calculated
*/
bool (*curve25519)(curve25519_drv_t *this, u_char *in, u_char *out);
/**
* Destroy a curve25519_drv_t.
*/
void (*destroy)(curve25519_drv_t *this);
};
/**
* Create a curve25519_drv instance.
*/
curve25519_drv_t *curve25519_drv_probe();
#endif /** CURVE25519_DRV_H_ @}*/
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