pqc/crypto_kem/kyber512/clean/symmetric.h

#ifndef SYMMETRIC_H
#define SYMMETRIC_H

#include "params.h"
#include <stddef.h>
#include <stdint.h>


#include "fips202.h"

typedef shake128ctx xof_state;

void PQCLEAN_KYBER512_CLEAN_kyber_shake128_absorb(xof_state *s,
        const uint8_t seed[KYBER_SYMBYTES],
        uint8_t x,
        uint8_t y);

void PQCLEAN_KYBER512_CLEAN_kyber_shake256_prf(uint8_t *out,
        size_t outlen,
        const uint8_t key[KYBER_SYMBYTES],
        uint8_t nonce);

#define XOF_BLOCKBYTES SHAKE128_RATE

#define hash_h(OUT, IN, INBYTES) sha3_256(OUT, IN, INBYTES)
#define hash_g(OUT, IN, INBYTES) sha3_512(OUT, IN, INBYTES)
#define xof_absorb(STATE, SEED, X, Y) PQCLEAN_KYBER512_CLEAN_kyber_shake128_absorb(STATE, SEED, X, Y)
#define xof_squeezeblocks(OUT, OUTBLOCKS, STATE) \
    shake128_squeezeblocks(OUT, OUTBLOCKS, STATE)
#define xof_ctx_release(STATE) shake128_ctx_release(STATE)
#define prf(OUT, OUTBYTES, KEY, NONCE) \
    PQCLEAN_KYBER512_CLEAN_kyber_shake256_prf(OUT, OUTBYTES, KEY, NONCE)
#define kdf(OUT, IN, INBYTES) shake256(OUT, KYBER_SSBYTES, IN, INBYTES)


#endif /* SYMMETRIC_H */