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pqcrypto/crypto_kem/hqc-256/clean/code.c

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2020-09-07 19:23:34 +01:00
#include "bch.h"
#include "code.h"
#include "parameters.h"
#include "repetition.h"
#include <stdint.h>
#include <string.h>
/**
* @file code.c
* @brief Implementation of tensor code
*/
/**
*
* @brief Encoding the message m to a code word em using the tensor code
*
* First we encode the message using the BCH code, then with the repetition code to obtain
* a tensor code word.
*
* @param[out] em Pointer to an array that is the tensor code word
* @param[in] m Pointer to an array that is the message
*/
void PQCLEAN_HQC256_CLEAN_code_encode(uint64_t *em, const uint64_t *m) {
uint64_t tmp[VEC_N1_SIZE_64] = {0};
PQCLEAN_HQC256_CLEAN_bch_code_encode(tmp, m);
PQCLEAN_HQC256_CLEAN_repetition_code_encode(em, tmp);
}
/**
* @brief Decoding the code word em to a message m using the tensor code
*
* @param[out] m Pointer to an array that is the message
* @param[in] em Pointer to an array that is the code word
*/
void PQCLEAN_HQC256_CLEAN_code_decode(uint64_t *m, const uint64_t *em) {
uint64_t tmp[VEC_N1_SIZE_64] = {0};
PQCLEAN_HQC256_CLEAN_repetition_code_decode(tmp, em);
PQCLEAN_HQC256_CLEAN_bch_code_decode(m, tmp);
}