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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_public_key ntru_public_key
* @{ @ingroup ntru_p
*/
#ifndef NTRU_PUBLIC_KEY_H_
#define NTRU_PUBLIC_KEY_H_
typedef struct ntru_public_key_t ntru_public_key_t;
#include "ntru_param_set.h"
#include "ntru_drbg.h"
#include <library.h>
/**
* Implements an NTRU encryption public key
*/
struct ntru_public_key_t {
/**
* Returns NTRU parameter set ID of the public key
*
* @return NTRU parameter set ID
*/
ntru_param_set_id_t (*get_id)(ntru_public_key_t *this);
/**
* Returns the packed encoding of the NTRU encryption public key
*
* @return Packed encoding of NTRU encryption public key
*/
chunk_t (*get_encoding)(ntru_public_key_t *this);
/**
* Encrypts a plaintext with the NTRU public key
*
* @param ciphertext Plaintext
* @param plaintext Ciphertext
* @return TRUE if encryption was successful
*/
bool (*encrypt)(ntru_public_key_t *this, chunk_t plaintext,
chunk_t *ciphertext);
/**
* Destroy ntru_public_key_t object
*/
void (*destroy)(ntru_public_key_t *this);
};
/**
* Creates an NTRU encryption public key from coefficients
*
* @param drbg Deterministic random bit generator
* @param params NTRU encryption parameter set to be used
* @param pubkey Coefficients of public key polynomial h
*/
ntru_public_key_t *ntru_public_key_create(ntru_drbg_t *drbg,
const ntru_param_set_t *params,
uint16_t *pubkey);
/**
* Creates an NTRU encryption public key from encoding
*
* @param drbg Deterministic random bit generator
* @param data Encoded NTRU public key
*/
ntru_public_key_t *ntru_public_key_create_from_data(ntru_drbg_t *drbg,
chunk_t data);
#endif /** NTRU_PUBLIC_KEY_H_ @}*/
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