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pqcrypto/crypto_kem/ledakemlt12/clean/niederreiter.h

59 lines
2.1 KiB
C

/**
*
* <niederreiter.h>
*
* @version 2.0 (March 2019)
*
* Reference ISO-C11 Implementation of the LEDAcrypt KEM-LT cipher using GCC built-ins.
*
* In alphabetical order:
*
* @author Marco Baldi <m.baldi@univpm.it>
* @author Alessandro Barenghi <alessandro.barenghi@polimi.it>
* @author Franco Chiaraluce <f.chiaraluce@univpm.it>
* @author Gerardo Pelosi <gerardo.pelosi@polimi.it>
* @author Paolo Santini <p.santini@pm.univpm.it>
*
* This code is hereby placed in the public domain.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
**/
#pragma once
#include "qc_ldpc_parameters.h"
#include "gf2x_limbs.h"
#include "gf2x_arith_mod_xPplusOne.h"
/*----------------------------------------------------------------------------*/
#pragma pack(1)
typedef struct {
/* raw entropy extracted from TRNG, will be deterministically expanded into
* H and Q during decryption */
unsigned char prng_seed[TRNG_BYTE_LENGTH];
int8_t rejections;
} privateKeyNiederreiter_t;
typedef struct {
DIGIT Mtr[(N0 - 1)*NUM_DIGITS_GF2X_ELEMENT];
// Dense representation of the matrix M=Ln0*L,
// An array including a sequence of (N0-1) gf2x elements;
// each gf2x element is stored as a binary polynomial(mod x^P+1)
// with P coefficients.
} publicKeyNiederreiter_t;
#pragma pack()
/*----------------------------------------------------------------------------*/