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/*
* Copyright (C) 2014 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 ntru_private_key ntru_private_key
* @{ @ingroup ntru_p
*/
#ifndef NTRU_PRIVATE_KEY_H_
#define NTRU_PRIVATE_KEY_H_
typedef struct ntru_private_key_t ntru_private_key_t;
#include "ntru_drbg.h"
#include "ntru_param_set.h"
#include "ntru_public_key.h"
#include <library.h>
/**
* Implements an NTRU encryption public/private key pair
*/
struct ntru_private_key_t {
/**
* Returns NTRU parameter set ID of the private key
*
* @return NTRU parameter set ID
*/
ntru_param_set_id_t (*get_id)(ntru_private_key_t *this);
/**
* Returns the NTRU encryption public key as an encoded binary blob
*
* @return NTRU encryption public key (must be freed after use)
*/
ntru_public_key_t* (*get_public_key)(ntru_private_key_t *this);
/**
* Returns the packed encoding of the NTRU encryption private key
*
* @return Packed encoding of NTRU encryption private key
*/
chunk_t (*get_encoding)(ntru_private_key_t *this);
/**
* Decrypts an NTRU ciphertext
*
* @param ciphertext NTRU Ciphertext
* @param plaintext Plaintext
* @return TRUE if decryption was successful
*/
bool (*decrypt)(ntru_private_key_t *this, chunk_t ciphertext,
chunk_t *plaintext);
/**
* Destroy ntru_private_key_t object
*/
void (*destroy)(ntru_private_key_t *this);
};
/**
* Creates an NTRU encryption public/private key pair using a NIST DRBG
*
* @param drbg Digital Random Bit Generator used for key generation
* @param params NTRU encryption parameter set to be used
*/
ntru_private_key_t *ntru_private_key_create(ntru_drbg_t *drbg, ntru_param_set_t *params);
/**
* Creates an NTRU encryption private key from encoding
*
* @param drbg Deterministic random bit generator
* @param data Encoded NTRU private key
*/
ntru_private_key_t *ntru_private_key_create_from_data(ntru_drbg_t *drbg,
chunk_t data);
#endif /** NTRU_PRIVATE_KEY_H_ @}*/
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