pqc/crypto_sign/dilithium5/clean/symmetric-shake.c
John Schanck 4f86c39515
Round 3 update for Dilithium (from github source) (#369)
* Update Dilithium

* Alternative montgomery reduce to avoid i386 functest errors

* Explicit casts for msvc

* More casts; bump upstream version; fix metadata

* another cast
2021-02-01 13:32:40 +08:00

27 lines
820 B
C

#include "fips202.h"
#include "params.h"
#include "symmetric.h"
#include <stdint.h>
void PQCLEAN_DILITHIUM5_CLEAN_dilithium_shake128_stream_init(shake128incctx *state, const uint8_t seed[SEEDBYTES], uint16_t nonce) {
uint8_t t[2];
t[0] = (uint8_t) nonce;
t[1] = (uint8_t) (nonce >> 8);
shake128_inc_init(state);
shake128_inc_absorb(state, seed, SEEDBYTES);
shake128_inc_absorb(state, t, 2);
shake128_inc_finalize(state);
}
void PQCLEAN_DILITHIUM5_CLEAN_dilithium_shake256_stream_init(shake256incctx *state, const uint8_t seed[CRHBYTES], uint16_t nonce) {
uint8_t t[2];
t[0] = (uint8_t) nonce;
t[1] = (uint8_t) (nonce >> 8);
shake256_inc_init(state);
shake256_inc_absorb(state, seed, CRHBYTES);
shake256_inc_absorb(state, t, 2);
shake256_inc_finalize(state);
}