2014-06-05 14:33:40 +00:00
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/*
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* Copyright (C) 2014 FH Bielefeld
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*
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* This file is part of a FH Bielefeld project.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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/**
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2014-06-05 16:14:18 +00:00
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* @file rnd.h
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2014-06-05 15:00:32 +00:00
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* This file holds the public API of generating
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* random ternary polynomials of the pqc NTRU
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* implementation and is meant to be installed
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* on the client system.
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* @brief public API, random polynomials
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2014-06-05 14:33:40 +00:00
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*/
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#ifndef PUBLIC_NTRU_RND_H_
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#define PUBLIC_NTRU_RND_H_
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#include "ntru.h"
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#include <fmpz_poly.h>
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#include <fmpz.h>
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#include <stdint.h>
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/**
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* Get a random integer from /dev/random.
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*
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* @return random integer
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*/
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int
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get_rnd_int(void);
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/**
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* Get a pseudo random integer from /dev/urandom.
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*
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* @return pseudo-random integer.
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*/
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int
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get_urnd_int(void);
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/**
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* Get a random ternary polynomial with specified numbers
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* of 1 coefficients and -1 coefficients.
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*
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* @param poly the resulting random polynomial [out]
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* @param params the NTRU context
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* @param num_ones the number of 1 coefficients
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* @param num_neg_ones the number of -1 coefficients
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* @param rnd_int function callback which should return
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* a random integer
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*/
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void
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ntru_get_rnd_tern_poly_num(fmpz_poly_t poly,
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const ntru_params *params,
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uint32_t num_ones,
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uint32_t num_neg_ones,
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int (*rnd_int)(void));
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#endif /* PUBLIC_NTRU_RND_H_ */
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