pqcrypto/crypto_kem/ledakemlt12/clean/niederreiter.h

#ifndef NIEDERREITER_H
#define NIEDERREITER_H

#include "gf2x_arith_mod_xPplusOne.h"
#include "gf2x_limbs.h"
#include "qc_ldpc_parameters.h"
#include "rng.h"

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;



void PQCLEAN_LEDAKEMLT12_CLEAN_niederreiter_keygen(
    publicKeyNiederreiter_t *pk,
    privateKeyNiederreiter_t *sk,
    AES_XOF_struct *keys_expander);

void PQCLEAN_LEDAKEMLT12_CLEAN_niederreiter_encrypt(
    DIGIT syndrome[],
    const publicKeyNiederreiter_t *pk,
    const DIGIT *err);

// return 1 if everything is ok
int PQCLEAN_LEDAKEMLT12_CLEAN_niederreiter_decrypt(
    DIGIT *err,
    const privateKeyNiederreiter_t *sk,
    const DIGIT *syndrome);


#endif