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/*
* Copyright (C) 2009 Martin Willi
* 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 gcrypt_dh gcrypt_dh
* @{ @ingroup gcrypt_p
*/
#ifndef GCRYPT_DH_H_
#define GCRYPT_DH_H_
typedef struct gcrypt_dh_t gcrypt_dh_t;
#include <library.h>
/**
* Implementation of the Diffie-Hellman algorithm using libgcrypt mpi.
*/
struct gcrypt_dh_t {
/**
* Implements diffie_hellman_t interface.
*/
diffie_hellman_t dh;
};
/**
* Creates a new gcrypt_dh_t object.
*
* @param group Diffie Hellman group number to use
* @return gcrypt_dh_t object, NULL if not supported
*/
gcrypt_dh_t *gcrypt_dh_create(diffie_hellman_group_t group);
/**
* Creates a new gcrypt_dh_t object for MODP_CUSTOM.
*
* @param group MODP_CUSTOM
* @param ... expects generator and prime as chunk_t
* @return gcrypt_dh_t object, NULL if not supported
*/
gcrypt_dh_t *gcrypt_dh_create_custom(diffie_hellman_group_t group, ...);
#endif /** GCRYPT_DH_H_ @}*/
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