pqc/crypto_kem/kyber1024-90s/clean/poly.h

#ifndef PQCLEAN_KYBER102490S_CLEAN_POLY_H
#define PQCLEAN_KYBER102490S_CLEAN_POLY_H
#include "params.h"
#include <stdint.h>

/*
 * Elements of R_q = Z_q[X]/(X^n + 1). Represents polynomial
 * coeffs[0] + X*coeffs[1] + X^2*xoeffs[2] + ... + X^{n-1}*coeffs[n-1]
 */
typedef struct {
    int16_t coeffs[KYBER_N];
} poly;

void PQCLEAN_KYBER102490S_CLEAN_poly_compress(uint8_t r[KYBER_POLYCOMPRESSEDBYTES], poly *a);
void PQCLEAN_KYBER102490S_CLEAN_poly_decompress(poly *r, const uint8_t a[KYBER_POLYCOMPRESSEDBYTES]);

void PQCLEAN_KYBER102490S_CLEAN_poly_tobytes(uint8_t r[KYBER_POLYBYTES], poly *a);
void PQCLEAN_KYBER102490S_CLEAN_poly_frombytes(poly *r, const uint8_t a[KYBER_POLYBYTES]);

void PQCLEAN_KYBER102490S_CLEAN_poly_frommsg(poly *r, const uint8_t msg[KYBER_INDCPA_MSGBYTES]);
void PQCLEAN_KYBER102490S_CLEAN_poly_tomsg(uint8_t msg[KYBER_INDCPA_MSGBYTES], poly *a);

void PQCLEAN_KYBER102490S_CLEAN_poly_getnoise(poly *r, const uint8_t seed[KYBER_SYMBYTES], uint8_t nonce);

void PQCLEAN_KYBER102490S_CLEAN_poly_ntt(poly *r);
void PQCLEAN_KYBER102490S_CLEAN_poly_invntt_tomont(poly *r);
void PQCLEAN_KYBER102490S_CLEAN_poly_basemul_montgomery(poly *r, const poly *a, const poly *b);
void PQCLEAN_KYBER102490S_CLEAN_poly_tomont(poly *r);

void PQCLEAN_KYBER102490S_CLEAN_poly_reduce(poly *r);
void PQCLEAN_KYBER102490S_CLEAN_poly_csubq(poly *r);

void PQCLEAN_KYBER102490S_CLEAN_poly_add(poly *r, const poly *a, const poly *b);
void PQCLEAN_KYBER102490S_CLEAN_poly_sub(poly *r, const poly *a, const poly *b);

#endif