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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 bliss_param_set bliss_param_set
* @{ @ingroup bliss_p
*/
#ifndef BLISS_PARAM_SET_H_
#define BLISS_PARAM_SET_H_
typedef enum bliss_param_set_id_t bliss_param_set_id_t;
typedef struct bliss_param_set_t bliss_param_set_t;
#include "ntt_fft_params.h"
#include "bliss_huffman_code.h"
#include <library.h>
/**
* BLISS signature parameter set ID list
*/
enum bliss_param_set_id_t {
BLISS_I = 1,
BLISS_II = 2,
BLISS_III = 3,
BLISS_IV = 4,
BLISS_B_I = 5,
BLISS_B_II = 6,
BLISS_B_III = 7,
BLISS_B_IV = 8
};
extern enum_name_t *bliss_param_set_id_names;
/**
* BLISS
*/
struct bliss_param_set_t {
/**
* BLISS parameter set ID
*/
const bliss_param_set_id_t id;
/**
* BLISS parameter set OID
*/
const int oid;
/**
* Security strength in bits
*/
const uint16_t strength;
/**
* Prime modulus
*/
const uint16_t q;
/**
* Number of bits in q
*/
const uint16_t q_bits;
/**
* Inverse of (q + 2) mod 2q
*/
const uint16_t q2_inv;
/**
* Ring dimension equal to the number of polynomial coefficients
*/
const uint16_t n;
/**
* Number of bits in n
*/
const uint16_t n_bits;
/**
* FFT parameters
*/
const ntt_fft_params_t *fft_params;
/**
* Number of [-1, +1] secret key coefficients
*/
const uint16_t non_zero1;
/**
* Number of [-2, +2] secret key coefficients
*/
const uint16_t non_zero2;
/**
* Number of secret key terms that go into Nk(S) norm
*/
const uint16_t kappa;
/**
* Maximum Nk(S) tolerable NK(S) norm (BLISS only)
*/
const uint32_t nks_max;
/**
* Maximum value Pmax for ||Sc'||^2 norm (BLISS-B only)
*/
const uint32_t p_max;
/**
* Standard deviation sigma
*/
const uint16_t sigma;
/**
* k_sigma = ceiling[ sqrt(2*ln 2) * sigma ]
*/
const uint16_t k_sigma;
/**
* Number of bits in k_sigma
*/
const uint16_t k_sigma_bits;
/**
* Coefficients for Bernoulli sampling with exponential biases
*/
const uint8_t *c;
/**
* Number of columns in Bernoulli coefficient table
*/
const size_t c_cols;
/**
* Number of rows in Bernoulli coefficient table
*/
const size_t c_rows;
/**
* Number of bits in z1
*/
const uint16_t z1_bits;
/**
* Number of z2 bits to be dropped after rounding
*/
const uint16_t d;
/**
* Modulus p = floor(2q / 2^d) applied after bit dropping
*/
const uint16_t p;
/**
* M = sigma^2 / alpha_rejection^2
*/
const uint32_t M;
/**
* B_infinity bound
*/
const uint16_t B_inf;
/**
* B_verify bound
*/
const uint32_t B_l2;
};
/**
* Get BLISS signature parameter set by BLISS parameter set ID
*
* @param id BLISS parameter set ID
* @return BLISS parameter set
*/
const bliss_param_set_t* bliss_param_set_get_by_id(bliss_param_set_id_t id);
/**
* Get BLISS signature parameter set by BLISS parameter set OID
*
* @param oid BLISS parameter set OID
* @return BLISS parameter set
*/
const bliss_param_set_t* bliss_param_set_get_by_oid(int oid);
#endif /** BLISS_PARAM_SET_H_ @}*/
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