more endianness fixes

This commit is contained in:
John M. Schanck 2020-09-12 09:59:40 -04:00 committed by Kris Kwiatkowski
parent 646f9f4a05
commit 26e0aea3e2
73 changed files with 594 additions and 742 deletions

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@ -82,7 +82,8 @@ void PQCLEAN_HQC128_AVX2_store8_arr(uint8_t *out8, size_t outlen, const uint64_t
*/
void PQCLEAN_HQC128_AVX2_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQC128_AVX2_hqc_secret_key_from_string(uint64_t *x, uint64_t *y, ui
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC128_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQC128_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -138,10 +140,11 @@ void PQCLEAN_HQC128_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s, co
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQC128_AVX2_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC128_AVX2_vect_set_random(&pk_seedexpander, h);
PQCLEAN_HQC128_AVX2_load8_arr(s, VEC_N_SIZE_64, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -157,8 +160,10 @@ void PQCLEAN_HQC128_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s, co
*/
void PQCLEAN_HQC128_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
PQCLEAN_HQC128_AVX2_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQC128_AVX2_store8_arr(ct + VEC_N_SIZE_BYTES, VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC128_AVX2_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -174,6 +179,8 @@ void PQCLEAN_HQC128_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u
*/
void PQCLEAN_HQC128_AVX2_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
PQCLEAN_HQC128_AVX2_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
PQCLEAN_HQC128_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC128_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

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@ -28,12 +28,12 @@ static void compute_roots(uint64_t *error, const uint16_t *sigma);
static void unpack_message(uint8_t *message_unpacked, const uint64_t *message) {
for (size_t i = 0; i < (VEC_K_SIZE_64 - (PARAM_K % 64 != 0)); ++i) {
for (size_t j = 0; j < 64; ++j) {
message_unpacked[j + 64 * i] = (message[i] >> j) & 0x0000000000000001;
message_unpacked[j + 64 * i] = (message[i] >> j) & 1;
}
}
for (int8_t j = 0; j < PARAM_K % 64; ++j) {
message_unpacked[j + 64 * (VEC_K_SIZE_64 - 1)] = (message[VEC_K_SIZE_64 - 1] >> j) & 0x0000000000000001;
message_unpacked[j + 64 * (VEC_K_SIZE_64 - 1)] = (message[VEC_K_SIZE_64 - 1] >> j) & 1;
}
}

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@ -1,10 +1,9 @@
#include "gf2x.h"
#include "nistseedexpander.h"
#include "parameters.h"
#include "parsing.h"
#include "randombytes.h"
#include <stdint.h>
#include <stdio.h>
#include <string.h>
/**
* \file gf2x.c
* \brief Implementation of multiplication of two polynomials
@ -13,7 +12,7 @@
static inline void swap(uint16_t *tab, uint16_t elt1, uint16_t elt2);
static void reduce(uint64_t *o, const uint64_t *a);
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
/**
* @brief swap two elements in a table
@ -68,7 +67,7 @@ static void reduce(uint64_t *o, const uint64_t *a) {
* @param[in] weight Hamming wifht of the sparse polynomial a2
* @param[in] ctx Pointer to a seed expander used to randomize the multiplication process
*/
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
//static uint32_t fast_convolution_mult(const uint64_t *A, const uint32_t *vB, uint64_t *C, const uint16_t w, AES_XOF_struct *ctx)
uint64_t carry;
uint32_t dec, s;
@ -77,8 +76,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
uint16_t permutation_table[16];
uint16_t permuted_sparse_vect[PARAM_OMEGA_E];
uint16_t permutation_sparse_vect[PARAM_OMEGA_E];
uint64_t tmp;
uint64_t *pt;
uint16_t *res_16;
uint8_t *res;
size_t i, j;
for (i = 0; i < 16; i++) {
@ -120,14 +120,13 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
for (i = 0; i < weight; i++) {
dec = a1[permuted_sparse_vect[i]] & 0xf;
s = a1[permuted_sparse_vect[i]] >> 4;
res_16 = ((uint16_t *) o) + s;
res = o + 2 * s;
pt = table + (permuted_table[dec] * (VEC_N_SIZE_64 + 1));
for (j = 0; j < VEC_N_SIZE_64 + 1; j++) {
*res_16++ ^= (uint16_t) pt[j];
*res_16++ ^= (uint16_t) (pt[j] >> 16);
*res_16++ ^= (uint16_t) (pt[j] >> 32);
*res_16++ ^= (uint16_t) (pt[j] >> 48);
tmp = PQCLEAN_HQC128_CLEAN_load8(res);
PQCLEAN_HQC128_CLEAN_store8(res, tmp ^ pt[j]);
res += 8;
}
}
}
@ -147,11 +146,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
* @param[in] ctx Pointer to the randomness context
*/
void PQCLEAN_HQC128_CLEAN_vect_mul(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
uint64_t tmp[2 * VEC_N_SIZE_64 + 1];
for (uint32_t j = 0; j < 2 * VEC_N_SIZE_64 + 1; j++) {
tmp[j] = 0;
}
uint64_t tmp[2 * VEC_N_SIZE_64 + 1] = {0};
fast_convolution_mult(tmp, a1, a2, weight, ctx);
fast_convolution_mult((uint8_t *) tmp, a1, a2, weight, ctx);
PQCLEAN_HQC128_CLEAN_load8_arr(tmp, 2 * VEC_N_SIZE_64 + 1, (uint8_t *) tmp, sizeof(tmp));
reduce(o, tmp);
}

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@ -47,6 +47,7 @@ int PQCLEAN_HQC128_CLEAN_crypto_kem_keypair(unsigned char *pk, unsigned char *sk
int PQCLEAN_HQC128_CLEAN_crypto_kem_enc(unsigned char *ct, unsigned char *ss, const unsigned char *pk) {
uint8_t theta[SHA512_BYTES] = {0};
uint8_t m_bytes[VEC_K_SIZE_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint64_t u[VEC_N_SIZE_64] = {0};
uint64_t v[VEC_N1N2_SIZE_64] = {0};
@ -54,19 +55,20 @@ int PQCLEAN_HQC128_CLEAN_crypto_kem_enc(unsigned char *ct, unsigned char *ss, co
unsigned char mc[VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES] = {0};
// Computing m
PQCLEAN_HQC128_CLEAN_vect_set_random_from_randombytes(m);
randombytes(m_bytes, VEC_K_SIZE_BYTES);
PQCLEAN_HQC128_CLEAN_load8_arr(m, VEC_K_SIZE_64, m_bytes, VEC_K_SIZE_BYTES);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m_bytes, VEC_K_SIZE_BYTES);
// Encrypting m
PQCLEAN_HQC128_CLEAN_hqc_pke_encrypt(u, v, m, theta, pk);
// Computing d
sha512(d, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d, m_bytes, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQC128_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m_bytes, VEC_K_SIZE_BYTES);
PQCLEAN_HQC128_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQC128_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);
@ -95,6 +97,7 @@ int PQCLEAN_HQC128_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned char *
uint64_t v[VEC_N1N2_SIZE_64] = {0};
unsigned char d[SHA512_BYTES] = {0};
unsigned char pk[PUBLIC_KEY_BYTES] = {0};
uint8_t m_bytes[VEC_K_SIZE_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint8_t theta[SHA512_BYTES] = {0};
uint64_t u2[VEC_N_SIZE_64] = {0};
@ -110,18 +113,19 @@ int PQCLEAN_HQC128_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned char *
// Decryting
PQCLEAN_HQC128_CLEAN_hqc_pke_decrypt(m, u, v, sk);
PQCLEAN_HQC128_CLEAN_store8_arr(m_bytes, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m_bytes, VEC_K_SIZE_BYTES);
// Encrypting m'
PQCLEAN_HQC128_CLEAN_hqc_pke_encrypt(u2, v2, m, theta, pk);
// Computing d'
sha512(d2, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d2, m_bytes, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQC128_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m_bytes, VEC_K_SIZE_BYTES);
PQCLEAN_HQC128_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQC128_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);

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@ -82,7 +82,8 @@ void PQCLEAN_HQC128_CLEAN_store8_arr(uint8_t *out8, size_t outlen, const uint64_
*/
void PQCLEAN_HQC128_CLEAN_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQC128_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *y, u
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC128_CLEAN_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQC128_CLEAN_vect_set_random_fixed_weight_by_coordinates(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -119,7 +121,7 @@ void PQCLEAN_HQC128_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *y, u
*/
void PQCLEAN_HQC128_CLEAN_hqc_public_key_to_string(uint8_t *pk, const uint8_t *pk_seed, const uint64_t *s) {
memcpy(pk, pk_seed, SEED_BYTES);
memcpy(pk + SEED_BYTES, s, VEC_N_SIZE_BYTES);
PQCLEAN_HQC128_CLEAN_store8_arr(pk + SEED_BYTES, VEC_N_SIZE_BYTES, s, VEC_N_SIZE_64);
}
@ -138,10 +140,11 @@ void PQCLEAN_HQC128_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *s, c
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQC128_CLEAN_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC128_CLEAN_vect_set_random(&pk_seedexpander, h);
memcpy(s, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -156,9 +159,11 @@ void PQCLEAN_HQC128_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *s, c
* @param[in] d String containing the hash d
*/
void PQCLEAN_HQC128_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
memcpy(ct, u, VEC_N_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
PQCLEAN_HQC128_CLEAN_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC128_CLEAN_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -173,7 +178,9 @@ void PQCLEAN_HQC128_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *
* @param[in] ct String containing the ciphertext
*/
void PQCLEAN_HQC128_CLEAN_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
memcpy(u, ct, VEC_N_SIZE_BYTES);
memcpy(v, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
PQCLEAN_HQC128_CLEAN_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC128_CLEAN_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

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@ -154,22 +154,6 @@ void PQCLEAN_HQC128_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v) {
/**
* @brief Generates a random vector
*
* This function generates a random binary vector. It uses the the randombytes function.
*
* @param[in] v Pointer to an array
*/
void PQCLEAN_HQC128_CLEAN_vect_set_random_from_randombytes(uint64_t *v) {
uint8_t rand_bytes [VEC_K_SIZE_BYTES] = {0};
randombytes(rand_bytes, VEC_K_SIZE_BYTES);
PQCLEAN_HQC128_CLEAN_load8_arr(v, VEC_K_SIZE_64, rand_bytes, VEC_K_SIZE_BYTES);
}
/**
* @brief Adds two vectors
*
@ -217,12 +201,12 @@ void PQCLEAN_HQC128_CLEAN_vect_resize(uint64_t *o, uint32_t size_o, const uint64
val = 64 - (size_o % 64);
}
memcpy(o, v, VEC_N1N2_SIZE_BYTES);
memcpy(o, v, 8 * VEC_N1N2_SIZE_64);
for (int8_t i = 0; i < val; ++i) {
o[VEC_N1N2_SIZE_64 - 1] &= (mask >> i);
}
} else {
memcpy(o, v, CEIL_DIVIDE(size_v, 8));
memcpy(o, v, 8 * CEIL_DIVIDE(size_v, 64));
}
}

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@ -18,8 +18,6 @@ void PQCLEAN_HQC128_CLEAN_vect_set_random_fixed_weight(AES_XOF_struct *ctx, uint
void PQCLEAN_HQC128_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v);
void PQCLEAN_HQC128_CLEAN_vect_set_random_from_randombytes(uint64_t *v);
void PQCLEAN_HQC128_CLEAN_vect_add(uint64_t *o, const uint64_t *v1, const uint64_t *v2, uint32_t size);

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@ -82,7 +82,8 @@ void PQCLEAN_HQC192_AVX2_store8_arr(uint8_t *out8, size_t outlen, const uint64_t
*/
void PQCLEAN_HQC192_AVX2_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQC192_AVX2_hqc_secret_key_from_string(uint64_t *x, uint64_t *y, ui
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC192_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQC192_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -138,10 +140,11 @@ void PQCLEAN_HQC192_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s, co
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQC192_AVX2_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC192_AVX2_vect_set_random(&pk_seedexpander, h);
PQCLEAN_HQC192_AVX2_load8_arr(s, VEC_N_SIZE_64, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -157,8 +160,10 @@ void PQCLEAN_HQC192_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s, co
*/
void PQCLEAN_HQC192_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
PQCLEAN_HQC192_AVX2_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQC192_AVX2_store8_arr(ct + VEC_N_SIZE_BYTES, VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC192_AVX2_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -174,6 +179,8 @@ void PQCLEAN_HQC192_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u
*/
void PQCLEAN_HQC192_AVX2_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
PQCLEAN_HQC192_AVX2_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
PQCLEAN_HQC192_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC192_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

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@ -1,10 +1,9 @@
#include "gf2x.h"
#include "nistseedexpander.h"
#include "parameters.h"
#include "parsing.h"
#include "randombytes.h"
#include <stdint.h>
#include <stdio.h>
#include <string.h>
/**
* \file gf2x.c
* \brief Implementation of multiplication of two polynomials
@ -13,7 +12,7 @@
static inline void swap(uint16_t *tab, uint16_t elt1, uint16_t elt2);
static void reduce(uint64_t *o, const uint64_t *a);
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
/**
* @brief swap two elements in a table
@ -68,7 +67,7 @@ static void reduce(uint64_t *o, const uint64_t *a) {
* @param[in] weight Hamming wifht of the sparse polynomial a2
* @param[in] ctx Pointer to a seed expander used to randomize the multiplication process
*/
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
//static uint32_t fast_convolution_mult(const uint64_t *A, const uint32_t *vB, uint64_t *C, const uint16_t w, AES_XOF_struct *ctx)
uint64_t carry;
uint32_t dec, s;
@ -77,8 +76,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
uint16_t permutation_table[16];
uint16_t permuted_sparse_vect[PARAM_OMEGA_E];
uint16_t permutation_sparse_vect[PARAM_OMEGA_E];
uint64_t tmp;
uint64_t *pt;
uint16_t *res_16;
uint8_t *res;
size_t i, j;
for (i = 0; i < 16; i++) {
@ -120,14 +120,13 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
for (i = 0; i < weight; i++) {
dec = a1[permuted_sparse_vect[i]] & 0xf;
s = a1[permuted_sparse_vect[i]] >> 4;
res_16 = ((uint16_t *) o) + s;
res = o + 2 * s;
pt = table + (permuted_table[dec] * (VEC_N_SIZE_64 + 1));
for (j = 0; j < VEC_N_SIZE_64 + 1; j++) {
*res_16++ ^= (uint16_t) pt[j];
*res_16++ ^= (uint16_t) (pt[j] >> 16);
*res_16++ ^= (uint16_t) (pt[j] >> 32);
*res_16++ ^= (uint16_t) (pt[j] >> 48);
tmp = PQCLEAN_HQC192_CLEAN_load8(res);
PQCLEAN_HQC192_CLEAN_store8(res, tmp ^ pt[j]);
res += 8;
}
}
}
@ -147,11 +146,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
* @param[in] ctx Pointer to the randomness context
*/
void PQCLEAN_HQC192_CLEAN_vect_mul(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
uint64_t tmp[2 * VEC_N_SIZE_64 + 1];
for (uint32_t j = 0; j < 2 * VEC_N_SIZE_64 + 1; j++) {
tmp[j] = 0;
}
uint64_t tmp[2 * VEC_N_SIZE_64 + 1] = {0};
fast_convolution_mult(tmp, a1, a2, weight, ctx);
fast_convolution_mult((uint8_t *) tmp, a1, a2, weight, ctx);
PQCLEAN_HQC192_CLEAN_load8_arr(tmp, 2 * VEC_N_SIZE_64 + 1, (uint8_t *) tmp, sizeof(tmp));
reduce(o, tmp);
}

View File

@ -47,6 +47,7 @@ int PQCLEAN_HQC192_CLEAN_crypto_kem_keypair(unsigned char *pk, unsigned char *sk
int PQCLEAN_HQC192_CLEAN_crypto_kem_enc(unsigned char *ct, unsigned char *ss, const unsigned char *pk) {
uint8_t theta[SHA512_BYTES] = {0};
uint8_t m_bytes[VEC_K_SIZE_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint64_t u[VEC_N_SIZE_64] = {0};
uint64_t v[VEC_N1N2_SIZE_64] = {0};
@ -54,19 +55,20 @@ int PQCLEAN_HQC192_CLEAN_crypto_kem_enc(unsigned char *ct, unsigned char *ss, co
unsigned char mc[VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES] = {0};
// Computing m
PQCLEAN_HQC192_CLEAN_vect_set_random_from_randombytes(m);
randombytes(m_bytes, VEC_K_SIZE_BYTES);
PQCLEAN_HQC192_CLEAN_load8_arr(m, VEC_K_SIZE_64, m_bytes, VEC_K_SIZE_BYTES);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m_bytes, VEC_K_SIZE_BYTES);
// Encrypting m
PQCLEAN_HQC192_CLEAN_hqc_pke_encrypt(u, v, m, theta, pk);
// Computing d
sha512(d, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d, m_bytes, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQC192_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m_bytes, VEC_K_SIZE_BYTES);
PQCLEAN_HQC192_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQC192_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);
@ -95,6 +97,7 @@ int PQCLEAN_HQC192_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned char *
uint64_t v[VEC_N1N2_SIZE_64] = {0};
unsigned char d[SHA512_BYTES] = {0};
unsigned char pk[PUBLIC_KEY_BYTES] = {0};
uint8_t m_bytes[VEC_K_SIZE_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint8_t theta[SHA512_BYTES] = {0};
uint64_t u2[VEC_N_SIZE_64] = {0};
@ -110,18 +113,19 @@ int PQCLEAN_HQC192_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned char *
// Decryting
PQCLEAN_HQC192_CLEAN_hqc_pke_decrypt(m, u, v, sk);
PQCLEAN_HQC192_CLEAN_store8_arr(m_bytes, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m_bytes, VEC_K_SIZE_BYTES);
// Encrypting m'
PQCLEAN_HQC192_CLEAN_hqc_pke_encrypt(u2, v2, m, theta, pk);
// Computing d'
sha512(d2, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d2, m_bytes, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQC192_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m_bytes, VEC_K_SIZE_BYTES);
PQCLEAN_HQC192_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQC192_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);

View File

@ -82,7 +82,8 @@ void PQCLEAN_HQC192_CLEAN_store8_arr(uint8_t *out8, size_t outlen, const uint64_
*/
void PQCLEAN_HQC192_CLEAN_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQC192_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *y, u
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC192_CLEAN_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQC192_CLEAN_vect_set_random_fixed_weight_by_coordinates(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -119,7 +121,7 @@ void PQCLEAN_HQC192_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *y, u
*/
void PQCLEAN_HQC192_CLEAN_hqc_public_key_to_string(uint8_t *pk, const uint8_t *pk_seed, const uint64_t *s) {
memcpy(pk, pk_seed, SEED_BYTES);
memcpy(pk + SEED_BYTES, s, VEC_N_SIZE_BYTES);
PQCLEAN_HQC192_CLEAN_store8_arr(pk + SEED_BYTES, VEC_N_SIZE_BYTES, s, VEC_N_SIZE_64);
}
@ -138,10 +140,11 @@ void PQCLEAN_HQC192_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *s, c
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQC192_CLEAN_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC192_CLEAN_vect_set_random(&pk_seedexpander, h);
memcpy(s, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -156,9 +159,11 @@ void PQCLEAN_HQC192_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *s, c
* @param[in] d String containing the hash d
*/
void PQCLEAN_HQC192_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
memcpy(ct, u, VEC_N_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
PQCLEAN_HQC192_CLEAN_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC192_CLEAN_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -173,7 +178,9 @@ void PQCLEAN_HQC192_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *
* @param[in] ct String containing the ciphertext
*/
void PQCLEAN_HQC192_CLEAN_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
memcpy(u, ct, VEC_N_SIZE_BYTES);
memcpy(v, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
PQCLEAN_HQC192_CLEAN_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC192_CLEAN_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

View File

@ -154,22 +154,6 @@ void PQCLEAN_HQC192_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v) {
/**
* @brief Generates a random vector
*
* This function generates a random binary vector. It uses the the randombytes function.
*
* @param[in] v Pointer to an array
*/
void PQCLEAN_HQC192_CLEAN_vect_set_random_from_randombytes(uint64_t *v) {
uint8_t rand_bytes [VEC_K_SIZE_BYTES] = {0};
randombytes(rand_bytes, VEC_K_SIZE_BYTES);
memcpy(v, rand_bytes, VEC_K_SIZE_BYTES);
}
/**
* @brief Adds two vectors
*
@ -185,6 +169,7 @@ void PQCLEAN_HQC192_CLEAN_vect_add(uint64_t *o, const uint64_t *v1, const uint64
}
/**
* @brief Compares two vectors
*
@ -216,12 +201,12 @@ void PQCLEAN_HQC192_CLEAN_vect_resize(uint64_t *o, uint32_t size_o, const uint64
val = 64 - (size_o % 64);
}
memcpy(o, v, VEC_N1N2_SIZE_BYTES);
memcpy(o, v, 8 * VEC_N1N2_SIZE_64);
for (int8_t i = 0; i < val; ++i) {
o[VEC_N1N2_SIZE_64 - 1] &= (mask >> i);
}
} else {
memcpy(o, v, CEIL_DIVIDE(size_v, 8));
memcpy(o, v, 8 * CEIL_DIVIDE(size_v, 64));
}
}

View File

@ -18,8 +18,6 @@ void PQCLEAN_HQC192_CLEAN_vect_set_random_fixed_weight(AES_XOF_struct *ctx, uint
void PQCLEAN_HQC192_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v);
void PQCLEAN_HQC192_CLEAN_vect_set_random_from_randombytes(uint64_t *v);
void PQCLEAN_HQC192_CLEAN_vect_add(uint64_t *o, const uint64_t *v1, const uint64_t *v2, uint32_t size);

View File

@ -82,7 +82,8 @@ void PQCLEAN_HQC256_AVX2_store8_arr(uint8_t *out8, size_t outlen, const uint64_t
*/
void PQCLEAN_HQC256_AVX2_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQC256_AVX2_hqc_secret_key_from_string(uint64_t *x, uint64_t *y, ui
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC256_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQC256_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -138,10 +140,11 @@ void PQCLEAN_HQC256_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s, co
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQC256_AVX2_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC256_AVX2_vect_set_random(&pk_seedexpander, h);
PQCLEAN_HQC256_AVX2_load8_arr(s, VEC_N_SIZE_64, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -157,8 +160,10 @@ void PQCLEAN_HQC256_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s, co
*/
void PQCLEAN_HQC256_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
PQCLEAN_HQC256_AVX2_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQC256_AVX2_store8_arr(ct + VEC_N_SIZE_BYTES, VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC256_AVX2_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -174,6 +179,8 @@ void PQCLEAN_HQC256_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u
*/
void PQCLEAN_HQC256_AVX2_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
PQCLEAN_HQC256_AVX2_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
PQCLEAN_HQC256_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC256_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

View File

@ -1,10 +1,9 @@
#include "gf2x.h"
#include "nistseedexpander.h"
#include "parameters.h"
#include "parsing.h"
#include "randombytes.h"
#include <stdint.h>
#include <stdio.h>
#include <string.h>
/**
* \file gf2x.c
* \brief Implementation of multiplication of two polynomials
@ -13,7 +12,7 @@
static inline void swap(uint16_t *tab, uint16_t elt1, uint16_t elt2);
static void reduce(uint64_t *o, const uint64_t *a);
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
/**
* @brief swap two elements in a table
@ -68,7 +67,7 @@ static void reduce(uint64_t *o, const uint64_t *a) {
* @param[in] weight Hamming wifht of the sparse polynomial a2
* @param[in] ctx Pointer to a seed expander used to randomize the multiplication process
*/
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
//static uint32_t fast_convolution_mult(const uint64_t *A, const uint32_t *vB, uint64_t *C, const uint16_t w, AES_XOF_struct *ctx)
uint64_t carry;
uint32_t dec, s;
@ -77,8 +76,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
uint16_t permutation_table[16];
uint16_t permuted_sparse_vect[PARAM_OMEGA_E];
uint16_t permutation_sparse_vect[PARAM_OMEGA_E];
uint64_t tmp;
uint64_t *pt;
uint16_t *res_16;
uint8_t *res;
size_t i, j;
for (i = 0; i < 16; i++) {
@ -120,14 +120,13 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
for (i = 0; i < weight; i++) {
dec = a1[permuted_sparse_vect[i]] & 0xf;
s = a1[permuted_sparse_vect[i]] >> 4;
res_16 = ((uint16_t *) o) + s;
res = o + 2 * s;
pt = table + (permuted_table[dec] * (VEC_N_SIZE_64 + 1));
for (j = 0; j < VEC_N_SIZE_64 + 1; j++) {
*res_16++ ^= (uint16_t) pt[j];
*res_16++ ^= (uint16_t) (pt[j] >> 16);
*res_16++ ^= (uint16_t) (pt[j] >> 32);
*res_16++ ^= (uint16_t) (pt[j] >> 48);
tmp = PQCLEAN_HQC256_CLEAN_load8(res);
PQCLEAN_HQC256_CLEAN_store8(res, tmp ^ pt[j]);
res += 8;
}
}
}
@ -147,11 +146,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
* @param[in] ctx Pointer to the randomness context
*/
void PQCLEAN_HQC256_CLEAN_vect_mul(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
uint64_t tmp[2 * VEC_N_SIZE_64 + 1];
for (uint32_t j = 0; j < 2 * VEC_N_SIZE_64 + 1; j++) {
tmp[j] = 0;
}
uint64_t tmp[2 * VEC_N_SIZE_64 + 1] = {0};
fast_convolution_mult(tmp, a1, a2, weight, ctx);
fast_convolution_mult((uint8_t *) tmp, a1, a2, weight, ctx);
PQCLEAN_HQC256_CLEAN_load8_arr(tmp, 2 * VEC_N_SIZE_64 + 1, (uint8_t *) tmp, sizeof(tmp));
reduce(o, tmp);
}

View File

@ -47,6 +47,7 @@ int PQCLEAN_HQC256_CLEAN_crypto_kem_keypair(unsigned char *pk, unsigned char *sk
int PQCLEAN_HQC256_CLEAN_crypto_kem_enc(unsigned char *ct, unsigned char *ss, const unsigned char *pk) {
uint8_t theta[SHA512_BYTES] = {0};
uint8_t m_bytes[VEC_K_SIZE_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint64_t u[VEC_N_SIZE_64] = {0};
uint64_t v[VEC_N1N2_SIZE_64] = {0};
@ -54,19 +55,20 @@ int PQCLEAN_HQC256_CLEAN_crypto_kem_enc(unsigned char *ct, unsigned char *ss, co
unsigned char mc[VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES] = {0};
// Computing m
PQCLEAN_HQC256_CLEAN_vect_set_random_from_randombytes(m);
randombytes(m_bytes, VEC_K_SIZE_BYTES);
PQCLEAN_HQC256_CLEAN_load8_arr(m, VEC_K_SIZE_64, m_bytes, VEC_K_SIZE_BYTES);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m_bytes, VEC_K_SIZE_BYTES);
// Encrypting m
PQCLEAN_HQC256_CLEAN_hqc_pke_encrypt(u, v, m, theta, pk);
// Computing d
sha512(d, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d, m_bytes, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQC256_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m_bytes, VEC_K_SIZE_BYTES);
PQCLEAN_HQC256_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQC256_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);
@ -95,6 +97,7 @@ int PQCLEAN_HQC256_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned char *
uint64_t v[VEC_N1N2_SIZE_64] = {0};
unsigned char d[SHA512_BYTES] = {0};
unsigned char pk[PUBLIC_KEY_BYTES] = {0};
uint8_t m_bytes[VEC_K_SIZE_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint8_t theta[SHA512_BYTES] = {0};
uint64_t u2[VEC_N_SIZE_64] = {0};
@ -110,18 +113,19 @@ int PQCLEAN_HQC256_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned char *
// Decryting
PQCLEAN_HQC256_CLEAN_hqc_pke_decrypt(m, u, v, sk);
PQCLEAN_HQC256_CLEAN_store8_arr(m_bytes, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m_bytes, VEC_K_SIZE_BYTES);
// Encrypting m'
PQCLEAN_HQC256_CLEAN_hqc_pke_encrypt(u2, v2, m, theta, pk);
// Computing d'
sha512(d2, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d2, m_bytes, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQC256_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m_bytes, VEC_K_SIZE_BYTES);
PQCLEAN_HQC256_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQC256_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);

View File

@ -82,7 +82,8 @@ void PQCLEAN_HQC256_CLEAN_store8_arr(uint8_t *out8, size_t outlen, const uint64_
*/
void PQCLEAN_HQC256_CLEAN_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQC256_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *y, u
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC256_CLEAN_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQC256_CLEAN_vect_set_random_fixed_weight_by_coordinates(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -119,7 +121,7 @@ void PQCLEAN_HQC256_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *y, u
*/
void PQCLEAN_HQC256_CLEAN_hqc_public_key_to_string(uint8_t *pk, const uint8_t *pk_seed, const uint64_t *s) {
memcpy(pk, pk_seed, SEED_BYTES);
memcpy(pk + SEED_BYTES, s, VEC_N_SIZE_BYTES);
PQCLEAN_HQC256_CLEAN_store8_arr(pk + SEED_BYTES, VEC_N_SIZE_BYTES, s, VEC_N_SIZE_64);
}
@ -138,10 +140,11 @@ void PQCLEAN_HQC256_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *s, c
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQC256_CLEAN_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQC256_CLEAN_vect_set_random(&pk_seedexpander, h);
memcpy(s, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -156,9 +159,11 @@ void PQCLEAN_HQC256_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *s, c
* @param[in] d String containing the hash d
*/
void PQCLEAN_HQC256_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
memcpy(ct, u, VEC_N_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
PQCLEAN_HQC256_CLEAN_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC256_CLEAN_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -173,7 +178,9 @@ void PQCLEAN_HQC256_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *
* @param[in] ct String containing the ciphertext
*/
void PQCLEAN_HQC256_CLEAN_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
memcpy(u, ct, VEC_N_SIZE_BYTES);
memcpy(v, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
PQCLEAN_HQC256_CLEAN_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQC256_CLEAN_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

View File

@ -154,22 +154,6 @@ void PQCLEAN_HQC256_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v) {
/**
* @brief Generates a random vector
*
* This function generates a random binary vector. It uses the the randombytes function.
*
* @param[in] v Pointer to an array
*/
void PQCLEAN_HQC256_CLEAN_vect_set_random_from_randombytes(uint64_t *v) {
uint8_t rand_bytes [VEC_K_SIZE_BYTES] = {0};
randombytes(rand_bytes, VEC_K_SIZE_BYTES);
memcpy(v, rand_bytes, VEC_K_SIZE_BYTES);
}
/**
* @brief Adds two vectors
*
@ -185,6 +169,7 @@ void PQCLEAN_HQC256_CLEAN_vect_add(uint64_t *o, const uint64_t *v1, const uint64
}
/**
* @brief Compares two vectors
*
@ -216,12 +201,12 @@ void PQCLEAN_HQC256_CLEAN_vect_resize(uint64_t *o, uint32_t size_o, const uint64
val = 64 - (size_o % 64);
}
memcpy(o, v, VEC_N1N2_SIZE_BYTES);
memcpy(o, v, 8 * VEC_N1N2_SIZE_64);
for (int8_t i = 0; i < val; ++i) {
o[VEC_N1N2_SIZE_64 - 1] &= (mask >> i);
}
} else {
memcpy(o, v, CEIL_DIVIDE(size_v, 8));
memcpy(o, v, 8 * CEIL_DIVIDE(size_v, 64));
}
}

View File

@ -18,8 +18,6 @@ void PQCLEAN_HQC256_CLEAN_vect_set_random_fixed_weight(AES_XOF_struct *ctx, uint
void PQCLEAN_HQC256_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v);
void PQCLEAN_HQC256_CLEAN_vect_set_random_from_randombytes(uint64_t *v);
void PQCLEAN_HQC256_CLEAN_vect_add(uint64_t *o, const uint64_t *v1, const uint64_t *v2, uint32_t size);

View File

@ -82,7 +82,8 @@ void PQCLEAN_HQCRMRS128_AVX2_store8_arr(uint8_t *out8, size_t outlen, const uint
*/
void PQCLEAN_HQCRMRS128_AVX2_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQCRMRS128_AVX2_hqc_secret_key_from_string(uint64_t *x, uint64_t *y
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS128_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQCRMRS128_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -138,10 +140,11 @@ void PQCLEAN_HQCRMRS128_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQCRMRS128_AVX2_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS128_AVX2_vect_set_random(&pk_seedexpander, h);
PQCLEAN_HQCRMRS128_AVX2_load8_arr(s, VEC_N_SIZE_64, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -157,8 +160,10 @@ void PQCLEAN_HQCRMRS128_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s
*/
void PQCLEAN_HQCRMRS128_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
PQCLEAN_HQCRMRS128_AVX2_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS128_AVX2_store8_arr(ct + VEC_N_SIZE_BYTES, VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS128_AVX2_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -174,6 +179,8 @@ void PQCLEAN_HQCRMRS128_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_
*/
void PQCLEAN_HQCRMRS128_AVX2_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
PQCLEAN_HQCRMRS128_AVX2_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
PQCLEAN_HQCRMRS128_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS128_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

View File

@ -21,8 +21,8 @@
* @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_HQCRMRS128_CLEAN_code_encode(uint64_t *em, const uint64_t *m) {
uint64_t tmp[VEC_N1_SIZE_64] = {0};
void PQCLEAN_HQCRMRS128_CLEAN_code_encode(uint8_t *em, const uint8_t *m) {
uint8_t tmp[VEC_N1_SIZE_BYTES] = {0};
PQCLEAN_HQCRMRS128_CLEAN_reed_solomon_encode(tmp, m);
PQCLEAN_HQCRMRS128_CLEAN_reed_muller_encode(em, tmp);
@ -37,11 +37,10 @@ void PQCLEAN_HQCRMRS128_CLEAN_code_encode(uint64_t *em, const uint64_t *m) {
* @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_HQCRMRS128_CLEAN_code_decode(uint64_t *m, const uint64_t *em) {
uint64_t tmp[VEC_N1_SIZE_64] = {0};
void PQCLEAN_HQCRMRS128_CLEAN_code_decode(uint8_t *m, const uint8_t *em) {
uint8_t tmp[VEC_N1_SIZE_BYTES] = {0};
PQCLEAN_HQCRMRS128_CLEAN_reed_muller_decode(tmp, em);
PQCLEAN_HQCRMRS128_CLEAN_reed_solomon_decode(m, tmp);
}

View File

@ -12,9 +12,9 @@
#include <stddef.h>
#include <stdint.h>
void PQCLEAN_HQCRMRS128_CLEAN_code_encode(uint64_t *em, const uint64_t *message);
void PQCLEAN_HQCRMRS128_CLEAN_code_encode(uint8_t *em, const uint8_t *message);
void PQCLEAN_HQCRMRS128_CLEAN_code_decode(uint64_t *m, const uint64_t *em);
void PQCLEAN_HQCRMRS128_CLEAN_code_decode(uint8_t *m, const uint8_t *em);
#endif

View File

@ -1,10 +1,9 @@
#include "gf2x.h"
#include "nistseedexpander.h"
#include "parameters.h"
#include "parsing.h"
#include "randombytes.h"
#include <stdint.h>
#include <stdio.h>
#include <string.h>
/**
* \file gf2x.c
* \brief Implementation of multiplication of two polynomials
@ -13,7 +12,7 @@
static inline void swap(uint16_t *tab, uint16_t elt1, uint16_t elt2);
static void reduce(uint64_t *o, const uint64_t *a);
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
/**
* @brief swap two elements in a table
@ -68,7 +67,7 @@ static void reduce(uint64_t *o, const uint64_t *a) {
* @param[in] weight Hamming wifht of the sparse polynomial a2
* @param[in] ctx Pointer to a seed expander used to randomize the multiplication process
*/
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
//static uint32_t fast_convolution_mult(const uint64_t *A, const uint32_t *vB, uint64_t *C, const uint16_t w, AES_XOF_struct *ctx)
uint64_t carry;
uint32_t dec, s;
@ -77,8 +76,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
uint16_t permutation_table[16];
uint16_t permuted_sparse_vect[PARAM_OMEGA_E];
uint16_t permutation_sparse_vect[PARAM_OMEGA_E];
uint64_t tmp;
uint64_t *pt;
uint16_t *res_16;
uint8_t *res;
size_t i, j;
for (i = 0; i < 16; i++) {
@ -120,14 +120,13 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
for (i = 0; i < weight; i++) {
dec = a1[permuted_sparse_vect[i]] & 0xf;
s = a1[permuted_sparse_vect[i]] >> 4;
res_16 = ((uint16_t *) o) + s;
res = o + 2 * s;
pt = table + (permuted_table[dec] * (VEC_N_SIZE_64 + 1));
for (j = 0; j < VEC_N_SIZE_64 + 1; j++) {
*res_16++ ^= (uint16_t) pt[j];
*res_16++ ^= (uint16_t) (pt[j] >> 16);
*res_16++ ^= (uint16_t) (pt[j] >> 32);
*res_16++ ^= (uint16_t) (pt[j] >> 48);
tmp = PQCLEAN_HQCRMRS128_CLEAN_load8(res);
PQCLEAN_HQCRMRS128_CLEAN_store8(res, tmp ^ pt[j]);
res += 8;
}
}
}
@ -147,11 +146,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
* @param[in] ctx Pointer to the randomness context
*/
void PQCLEAN_HQCRMRS128_CLEAN_vect_mul(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
uint64_t tmp[2 * VEC_N_SIZE_64 + 1];
for (uint32_t j = 0; j < 2 * VEC_N_SIZE_64 + 1; j++) {
tmp[j] = 0;
}
uint64_t tmp[2 * VEC_N_SIZE_64 + 1] = {0};
fast_convolution_mult(tmp, a1, a2, weight, ctx);
fast_convolution_mult((uint8_t *) tmp, a1, a2, weight, ctx);
PQCLEAN_HQCRMRS128_CLEAN_load8_arr(tmp, 2 * VEC_N_SIZE_64 + 1, (uint8_t *) tmp, sizeof(tmp));
reduce(o, tmp);
}

View File

@ -70,7 +70,7 @@ void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_keygen(unsigned char *pk, unsigned char *s
* @param[in] theta Seed used to derive randomness required for encryption
* @param[in] pk String containing the public key
*/
void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t *m, unsigned char *theta, const unsigned char *pk) {
void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint8_t *m, unsigned char *theta, const unsigned char *pk) {
AES_XOF_struct seedexpander;
uint64_t h[VEC_N_SIZE_64] = {0};
uint64_t s[VEC_N_SIZE_64] = {0};
@ -96,7 +96,8 @@ void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t
PQCLEAN_HQCRMRS128_CLEAN_vect_add(u, r1, u, VEC_N_SIZE_64);
// Compute v = m.G by encoding the message
PQCLEAN_HQCRMRS128_CLEAN_code_encode(v, m);
PQCLEAN_HQCRMRS128_CLEAN_code_encode((uint8_t *)v, m);
PQCLEAN_HQCRMRS128_CLEAN_load8_arr(v, VEC_N1N2_SIZE_64, (uint8_t *)v, VEC_N1N2_SIZE_BYTES);
PQCLEAN_HQCRMRS128_CLEAN_vect_resize(tmp1, PARAM_N, v, PARAM_N1N2);
// Compute v = m.G + s.r2 + e
@ -117,17 +118,16 @@ void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t
* @param[in] v Vector v (second part of the ciphertext)
* @param[in] sk String containing the secret key
*/
void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_decrypt(uint64_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk) {
uint64_t x[VEC_N_SIZE_64] = {0};
uint32_t y[PARAM_OMEGA] = {0};
void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_decrypt(uint8_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk) {
uint8_t pk[PUBLIC_KEY_BYTES] = {0};
uint64_t tmp1[VEC_N_SIZE_64] = {0};
uint64_t tmp2[VEC_N_SIZE_64] = {0};
uint32_t y[PARAM_OMEGA] = {0};
AES_XOF_struct perm_seedexpander;
uint8_t perm_seed[SEED_BYTES] = {0};
// Retrieve x, y, pk from secret key
PQCLEAN_HQCRMRS128_CLEAN_hqc_secret_key_from_string(x, y, pk, sk);
PQCLEAN_HQCRMRS128_CLEAN_hqc_secret_key_from_string(tmp1, y, pk, sk);
randombytes(perm_seed, SEED_BYTES);
seedexpander_init(&perm_seedexpander, perm_seed, perm_seed + 32, SEEDEXPANDER_MAX_LENGTH);
@ -139,5 +139,6 @@ void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_decrypt(uint64_t *m, const uint64_t *u, co
// Compute m by decoding v - u.y
PQCLEAN_HQCRMRS128_CLEAN_code_decode(m, tmp2);
PQCLEAN_HQCRMRS128_CLEAN_store8_arr((uint8_t *)tmp1, VEC_N_SIZE_BYTES, tmp2, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS128_CLEAN_code_decode(m, (uint8_t *)tmp1);
}

View File

@ -13,9 +13,9 @@
void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_keygen(unsigned char *pk, unsigned char *sk);
void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t *m, unsigned char *theta, const unsigned char *pk);
void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint8_t *m, unsigned char *theta, const unsigned char *pk);
void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_decrypt(uint64_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk);
void PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_decrypt(uint8_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk);
#endif

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@ -47,26 +47,26 @@ int PQCLEAN_HQCRMRS128_CLEAN_crypto_kem_keypair(unsigned char *pk, unsigned char
int PQCLEAN_HQCRMRS128_CLEAN_crypto_kem_enc(unsigned char *ct, unsigned char *ss, const unsigned char *pk) {
uint8_t theta[SHA512_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint8_t m[VEC_K_SIZE_BYTES] = {0};
uint64_t u[VEC_N_SIZE_64] = {0};
uint64_t v[VEC_N1N2_SIZE_64] = {0};
unsigned char d[SHA512_BYTES] = {0};
unsigned char mc[VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES] = {0};
// Computing m
PQCLEAN_HQCRMRS128_CLEAN_vect_set_random_from_randombytes(m);
randombytes(m, VEC_K_SIZE_BYTES);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m, VEC_K_SIZE_BYTES);
// Encrypting m
PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_encrypt(u, v, m, theta, pk);
// Computing d
sha512(d, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d, m, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQCRMRS128_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m, VEC_K_SIZE_BYTES);
PQCLEAN_HQCRMRS128_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS128_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);
@ -95,7 +95,7 @@ int PQCLEAN_HQCRMRS128_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned ch
uint64_t v[VEC_N1N2_SIZE_64] = {0};
unsigned char d[SHA512_BYTES] = {0};
unsigned char pk[PUBLIC_KEY_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint8_t m[VEC_K_SIZE_BYTES] = {0};
uint8_t theta[SHA512_BYTES] = {0};
uint64_t u2[VEC_N_SIZE_64] = {0};
uint64_t v2[VEC_N1N2_SIZE_64] = {0};
@ -112,16 +112,16 @@ int PQCLEAN_HQCRMRS128_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned ch
PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_decrypt(m, u, v, sk);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m, VEC_K_SIZE_BYTES);
// Encrypting m'
PQCLEAN_HQCRMRS128_CLEAN_hqc_pke_encrypt(u2, v2, m, theta, pk);
// Computing d'
sha512(d2, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d2, m, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQCRMRS128_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m, VEC_K_SIZE_BYTES);
PQCLEAN_HQCRMRS128_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS128_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);

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@ -82,7 +82,8 @@ void PQCLEAN_HQCRMRS128_CLEAN_store8_arr(uint8_t *out8, size_t outlen, const uin
*/
void PQCLEAN_HQCRMRS128_CLEAN_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQCRMRS128_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS128_CLEAN_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQCRMRS128_CLEAN_vect_set_random_fixed_weight_by_coordinates(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -119,7 +121,7 @@ void PQCLEAN_HQCRMRS128_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *
*/
void PQCLEAN_HQCRMRS128_CLEAN_hqc_public_key_to_string(uint8_t *pk, const uint8_t *pk_seed, const uint64_t *s) {
memcpy(pk, pk_seed, SEED_BYTES);
memcpy(pk + SEED_BYTES, s, VEC_N_SIZE_BYTES);
PQCLEAN_HQCRMRS128_CLEAN_store8_arr(pk + SEED_BYTES, VEC_N_SIZE_BYTES, s, VEC_N_SIZE_64);
}
@ -138,10 +140,11 @@ void PQCLEAN_HQCRMRS128_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQCRMRS128_CLEAN_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS128_CLEAN_vect_set_random(&pk_seedexpander, h);
memcpy(s, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -156,9 +159,11 @@ void PQCLEAN_HQCRMRS128_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *
* @param[in] d String containing the hash d
*/
void PQCLEAN_HQCRMRS128_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
memcpy(ct, u, VEC_N_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
PQCLEAN_HQCRMRS128_CLEAN_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS128_CLEAN_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -173,7 +178,9 @@ void PQCLEAN_HQCRMRS128_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64
* @param[in] ct String containing the ciphertext
*/
void PQCLEAN_HQCRMRS128_CLEAN_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
memcpy(u, ct, VEC_N_SIZE_BYTES);
memcpy(v, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
PQCLEAN_HQCRMRS128_CLEAN_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS128_CLEAN_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

View File

@ -16,9 +16,9 @@
#define BIT0MASK(x) (-((x) & 1))
static void encode(uint32_t *word, uint8_t message);
static void encode(uint8_t *word, uint8_t message);
static void hadamard(uint16_t src[128], uint16_t dst[128]);
static void expand_and_sum(uint16_t dest[128], const uint32_t src[4 * MULTIPLICITY]);
static void expand_and_sum(uint16_t dest[128], const uint8_t src[16 * MULTIPLICITY]);
static uint8_t find_peaks(const uint16_t transform[128]);
@ -40,28 +40,38 @@ static uint8_t find_peaks(const uint16_t transform[128]);
* @param[out] word An RM(1,7) codeword
* @param[in] message A message
*/
static void encode(uint32_t *word, uint8_t message) {
// the four parts of the word are identical
// except for encoding bits 5 and 6
uint32_t first_word;
static void encode(uint8_t *word, uint8_t message) {
uint32_t e;
// bit 7 flips all the bits, do that first to save work
first_word = BIT0MASK(message >> 7);
e = BIT0MASK(message >> 7);
// bits 0, 1, 2, 3, 4 are the same for all four longs
// (Warning: in the bit matrix above, low bits are at the left!)
first_word ^= BIT0MASK(message >> 0) & 0xaaaaaaaa;
first_word ^= BIT0MASK(message >> 1) & 0xcccccccc;
first_word ^= BIT0MASK(message >> 2) & 0xf0f0f0f0;
first_word ^= BIT0MASK(message >> 3) & 0xff00ff00;
first_word ^= BIT0MASK(message >> 4) & 0xffff0000;
e ^= BIT0MASK(message >> 0) & 0xaaaaaaaa;
e ^= BIT0MASK(message >> 1) & 0xcccccccc;
e ^= BIT0MASK(message >> 2) & 0xf0f0f0f0;
e ^= BIT0MASK(message >> 3) & 0xff00ff00;
e ^= BIT0MASK(message >> 4) & 0xffff0000;
// we can store this in the first quarter
word[0] = first_word;
word[0 + 0] = (e >> 0x00) & 0xff;
word[0 + 1] = (e >> 0x08) & 0xff;
word[0 + 2] = (e >> 0x10) & 0xff;
word[0 + 3] = (e >> 0x18) & 0xff;
// bit 5 flips entries 1 and 3; bit 6 flips 2 and 3
first_word ^= BIT0MASK(message >> 5);
word[1] = first_word;
first_word ^= BIT0MASK(message >> 6);
word[3] = first_word;
first_word ^= BIT0MASK(message >> 5);
word[2] = first_word;
e ^= BIT0MASK(message >> 5);
word[4 + 0] = (e >> 0x00) & 0xff;
word[4 + 1] = (e >> 0x08) & 0xff;
word[4 + 2] = (e >> 0x10) & 0xff;
word[4 + 3] = (e >> 0x18) & 0xff;
e ^= BIT0MASK(message >> 6);
word[12 + 0] = (e >> 0x00) & 0xff;
word[12 + 1] = (e >> 0x08) & 0xff;
word[12 + 2] = (e >> 0x10) & 0xff;
word[12 + 3] = (e >> 0x18) & 0xff;
e ^= BIT0MASK(message >> 5);
word[8 + 0] = (e >> 0x00) & 0xff;
word[8 + 1] = (e >> 0x08) & 0xff;
word[8 + 2] = (e >> 0x10) & 0xff;
word[8 + 3] = (e >> 0x18) & 0xff;
}
@ -131,18 +141,19 @@ static void hadamard(uint16_t src[128], uint16_t dst[128]) {
* @param[out] dest Structure that contain the expanded codeword
* @param[in] src Structure that contain the codeword
*/
static void expand_and_sum(uint16_t dest[128], const uint32_t src[4 * MULTIPLICITY]) {
static void expand_and_sum(uint16_t dest[128], const uint8_t src[16 * MULTIPLICITY]) {
size_t part, bit, copy;
// start with the first copy
for (uint32_t part = 0; part < 4; part++) {
for (uint32_t bit = 0; bit < 32; bit++) {
dest[part * 32 + bit] = (uint16_t) ((src[part] >> bit) & 1);
for (part = 0; part < 16; part++) {
for (bit = 0; bit < 8; bit++) {
dest[part * 8 + bit] = (uint16_t) ((src[part] >> bit) & 1);
}
}
// sum the rest of the copies
for (uint32_t copy = 1; copy < MULTIPLICITY; copy++) {
for (uint32_t part = 0; part < 4; part++) {
for (uint32_t bit = 0; bit < 32; bit++) {
dest[part * 32 + bit] += (uint16_t) ((src[4 * copy + part] >> bit) & 1);
for (copy = 1; copy < MULTIPLICITY; copy++) {
for (part = 0; part < 16; part++) {
for (bit = 0; bit < 8; bit++) {
dest[part * 8 + bit] += (uint16_t) ((src[16 * copy + part] >> bit) & 1);
}
}
}
@ -188,15 +199,13 @@ static uint8_t find_peaks(const uint16_t transform[128]) {
* @param[out] cdw Array of size VEC_N1N2_SIZE_64 receiving the encoded message
* @param[in] msg Array of size VEC_N1_SIZE_64 storing the message
*/
void PQCLEAN_HQCRMRS128_CLEAN_reed_muller_encode(uint64_t *cdw, const uint64_t *msg) {
uint8_t *message_array = (uint8_t *) msg;
uint32_t *codeArray = (uint32_t *) cdw;
void PQCLEAN_HQCRMRS128_CLEAN_reed_muller_encode(uint8_t *cdw, const uint8_t *msg) {
for (size_t i = 0; i < VEC_N1_SIZE_BYTES; i++) {
// encode first word
encode(&codeArray[4 * i * MULTIPLICITY], message_array[i]);
encode(&cdw[16 * i * MULTIPLICITY], msg[i]);
// copy to other identical codewords
for (size_t copy = 1; copy < MULTIPLICITY; copy++) {
memcpy(&codeArray[4 * i * MULTIPLICITY + 4 * copy], &codeArray[4 * i * MULTIPLICITY], 4 * sizeof(uint32_t));
memcpy(&cdw[16 * i * MULTIPLICITY + 16 * copy], &cdw[16 * i * MULTIPLICITY], 16);
}
}
}
@ -212,19 +221,17 @@ void PQCLEAN_HQCRMRS128_CLEAN_reed_muller_encode(uint64_t *cdw, const uint64_t *
* @param[out] msg Array of size VEC_N1_SIZE_64 receiving the decoded message
* @param[in] cdw Array of size VEC_N1N2_SIZE_64 storing the received word
*/
void PQCLEAN_HQCRMRS128_CLEAN_reed_muller_decode(uint64_t *msg, const uint64_t *cdw) {
uint8_t *message_array = (uint8_t *) msg;
uint32_t *codeArray = (uint32_t *) cdw;
void PQCLEAN_HQCRMRS128_CLEAN_reed_muller_decode(uint8_t *msg, const uint8_t *cdw) {
uint16_t expanded[128];
uint16_t transform[128];
for (size_t i = 0; i < VEC_N1_SIZE_BYTES; i++) {
// collect the codewords
expand_and_sum(expanded, &codeArray[4 * i * MULTIPLICITY]);
expand_and_sum(expanded, &cdw[16 * i * MULTIPLICITY]);
// apply hadamard transform
hadamard(expanded, transform);
// fix the first entry to get the half Hadamard transform
transform[0] -= 64 * MULTIPLICITY;
// finish the decoding
message_array[i] = find_peaks(transform);
msg[i] = find_peaks(transform);
}
}

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@ -12,9 +12,9 @@
#include <stddef.h>
#include <stdint.h>
void PQCLEAN_HQCRMRS128_CLEAN_reed_muller_encode(uint64_t *cdw, const uint64_t *msg);
void PQCLEAN_HQCRMRS128_CLEAN_reed_muller_encode(uint8_t *cdw, const uint8_t *msg);
void PQCLEAN_HQCRMRS128_CLEAN_reed_muller_decode(uint64_t *msg, const uint64_t *cdw);
void PQCLEAN_HQCRMRS128_CLEAN_reed_muller_decode(uint8_t *msg, const uint8_t *cdw);
#endif

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@ -1,6 +1,7 @@
#include "fft.h"
#include "gf.h"
#include "parameters.h"
#include "parsing.h"
#include "reed_solomon.h"
#include <stdint.h>
#include <stdio.h>
@ -30,37 +31,31 @@ static void correct_errors(uint8_t *cdw, const uint16_t *error_values);
* @param[out] cdw Array of size VEC_N1_SIZE_64 receiving the encoded message
* @param[in] msg Array of size VEC_K_SIZE_64 storing the message
*/
void PQCLEAN_HQCRMRS128_CLEAN_reed_solomon_encode(uint64_t *cdw, const uint64_t *msg) {
void PQCLEAN_HQCRMRS128_CLEAN_reed_solomon_encode(uint8_t *cdw, const uint8_t *msg) {
uint8_t gate_value = 0;
uint16_t tmp[PARAM_G] = {0};
uint16_t PARAM_RS_POLY [] = {RS_POLY_COEFS};
uint8_t msg_bytes[PARAM_K] = {0};
uint8_t cdw_bytes[PARAM_N1] = {0};
for (size_t i = 0; i < VEC_K_SIZE_64; ++i) {
for (size_t j = 0; j < 8; ++j) {
msg_bytes[i * 8 + j] = (uint8_t) (msg[i] >> (j * 8));
}
for (size_t i = 0; i < PARAM_N1; i++) {
cdw[i] = 0;
}
for (int i = PARAM_K - 1; i >= 0; --i) {
gate_value = msg_bytes[i] ^ cdw_bytes[PARAM_N1 - PARAM_K - 1];
gate_value = msg[i] ^ cdw[PARAM_N1 - PARAM_K - 1];
for (size_t j = 0; j < PARAM_G; ++j) {
tmp[j] = PQCLEAN_HQCRMRS128_CLEAN_gf_mul(gate_value, PARAM_RS_POLY[j]);
}
for (size_t k = PARAM_N1 - PARAM_K - 1; k; --k) {
cdw_bytes[k] = cdw_bytes[k - 1] ^ tmp[k];
cdw[k] = cdw[k - 1] ^ tmp[k];
}
cdw_bytes[0] = tmp[0];
cdw[0] = tmp[0];
}
memcpy(cdw_bytes + PARAM_N1 - PARAM_K, msg_bytes, PARAM_K);
memcpy(cdw, cdw_bytes, PARAM_N1);
memcpy(cdw + PARAM_N1 - PARAM_K, msg, PARAM_K);
}
@ -312,8 +307,7 @@ static void correct_errors(uint8_t *cdw, const uint16_t *error_values) {
* @param[out] msg Array of size VEC_K_SIZE_64 receiving the decoded message
* @param[in] cdw Array of size VEC_N1_SIZE_64 storing the received word
*/
void PQCLEAN_HQCRMRS128_CLEAN_reed_solomon_decode(uint64_t *msg, uint64_t *cdw) {
uint8_t cdw_bytes[PARAM_N1] = {0};
void PQCLEAN_HQCRMRS128_CLEAN_reed_solomon_decode(uint8_t *msg, uint8_t *cdw) {
uint16_t syndromes[2 * PARAM_DELTA] = {0};
uint16_t sigma[1 << PARAM_FFT] = {0};
uint8_t error[1 << PARAM_M] = {0};
@ -321,11 +315,8 @@ void PQCLEAN_HQCRMRS128_CLEAN_reed_solomon_decode(uint64_t *msg, uint64_t *cdw)
uint16_t error_values[PARAM_N1] = {0};
uint16_t deg;
// Copy the vector in an array of bytes
memcpy(cdw_bytes, cdw, PARAM_N1);
// Calculate the 2*PARAM_DELTA syndromes
compute_syndromes(syndromes, cdw_bytes);
compute_syndromes(syndromes, cdw);
// Compute the error locator polynomial sigma
// Sigma's degree is at most PARAM_DELTA but the FFT requires the extra room
@ -341,9 +332,9 @@ void PQCLEAN_HQCRMRS128_CLEAN_reed_solomon_decode(uint64_t *msg, uint64_t *cdw)
compute_error_values(error_values, z, error);
// Correct the errors
correct_errors(cdw_bytes, error_values);
correct_errors(cdw, error_values);
// Retrieve the message from the decoded codeword
memcpy(msg, cdw_bytes + (PARAM_G - 1), PARAM_K);
memcpy(msg, cdw + (PARAM_G - 1), PARAM_K);
}

File diff suppressed because one or more lines are too long

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@ -154,22 +154,6 @@ void PQCLEAN_HQCRMRS128_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v)
/**
* @brief Generates a random vector
*
* This function generates a random binary vector. It uses the the randombytes function.
*
* @param[in] v Pointer to an array
*/
void PQCLEAN_HQCRMRS128_CLEAN_vect_set_random_from_randombytes(uint64_t *v) {
uint8_t rand_bytes [VEC_K_SIZE_BYTES] = {0};
randombytes(rand_bytes, VEC_K_SIZE_BYTES);
memcpy(v, rand_bytes, VEC_K_SIZE_BYTES);
}
/**
* @brief Adds two vectors
*
@ -185,6 +169,7 @@ void PQCLEAN_HQCRMRS128_CLEAN_vect_add(uint64_t *o, const uint64_t *v1, const ui
}
/**
* @brief Compares two vectors
*
@ -216,12 +201,12 @@ void PQCLEAN_HQCRMRS128_CLEAN_vect_resize(uint64_t *o, uint32_t size_o, const ui
val = 64 - (size_o % 64);
}
memcpy(o, v, VEC_N1N2_SIZE_BYTES);
memcpy(o, v, 8 * VEC_N1N2_SIZE_64);
for (int8_t i = 0; i < val; ++i) {
o[VEC_N1N2_SIZE_64 - 1] &= (mask >> i);
}
} else {
memcpy(o, v, CEIL_DIVIDE(size_v, 8));
memcpy(o, v, 8 * CEIL_DIVIDE(size_v, 64));
}
}

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@ -18,8 +18,6 @@ void PQCLEAN_HQCRMRS128_CLEAN_vect_set_random_fixed_weight(AES_XOF_struct *ctx,
void PQCLEAN_HQCRMRS128_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v);
void PQCLEAN_HQCRMRS128_CLEAN_vect_set_random_from_randombytes(uint64_t *v);
void PQCLEAN_HQCRMRS128_CLEAN_vect_add(uint64_t *o, const uint64_t *v1, const uint64_t *v2, uint32_t size);

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@ -82,7 +82,8 @@ void PQCLEAN_HQCRMRS192_AVX2_store8_arr(uint8_t *out8, size_t outlen, const uint
*/
void PQCLEAN_HQCRMRS192_AVX2_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQCRMRS192_AVX2_hqc_secret_key_from_string(uint64_t *x, uint64_t *y
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS192_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQCRMRS192_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -138,10 +140,11 @@ void PQCLEAN_HQCRMRS192_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQCRMRS192_AVX2_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS192_AVX2_vect_set_random(&pk_seedexpander, h);
PQCLEAN_HQCRMRS192_AVX2_load8_arr(s, VEC_N_SIZE_64, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -157,8 +160,10 @@ void PQCLEAN_HQCRMRS192_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s
*/
void PQCLEAN_HQCRMRS192_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
PQCLEAN_HQCRMRS192_AVX2_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS192_AVX2_store8_arr(ct + VEC_N_SIZE_BYTES, VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS192_AVX2_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -174,6 +179,8 @@ void PQCLEAN_HQCRMRS192_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_
*/
void PQCLEAN_HQCRMRS192_AVX2_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
PQCLEAN_HQCRMRS192_AVX2_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
PQCLEAN_HQCRMRS192_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS192_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

View File

@ -21,8 +21,8 @@
* @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_HQCRMRS192_CLEAN_code_encode(uint64_t *em, const uint64_t *m) {
uint64_t tmp[VEC_N1_SIZE_64] = {0};
void PQCLEAN_HQCRMRS192_CLEAN_code_encode(uint8_t *em, const uint8_t *m) {
uint8_t tmp[VEC_N1_SIZE_BYTES] = {0};
PQCLEAN_HQCRMRS192_CLEAN_reed_solomon_encode(tmp, m);
PQCLEAN_HQCRMRS192_CLEAN_reed_muller_encode(em, tmp);
@ -37,11 +37,10 @@ void PQCLEAN_HQCRMRS192_CLEAN_code_encode(uint64_t *em, const uint64_t *m) {
* @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_HQCRMRS192_CLEAN_code_decode(uint64_t *m, const uint64_t *em) {
uint64_t tmp[VEC_N1_SIZE_64] = {0};
void PQCLEAN_HQCRMRS192_CLEAN_code_decode(uint8_t *m, const uint8_t *em) {
uint8_t tmp[VEC_N1_SIZE_BYTES] = {0};
PQCLEAN_HQCRMRS192_CLEAN_reed_muller_decode(tmp, em);
PQCLEAN_HQCRMRS192_CLEAN_reed_solomon_decode(m, tmp);
}

View File

@ -12,9 +12,9 @@
#include <stddef.h>
#include <stdint.h>
void PQCLEAN_HQCRMRS192_CLEAN_code_encode(uint64_t *em, const uint64_t *message);
void PQCLEAN_HQCRMRS192_CLEAN_code_encode(uint8_t *em, const uint8_t *message);
void PQCLEAN_HQCRMRS192_CLEAN_code_decode(uint64_t *m, const uint64_t *em);
void PQCLEAN_HQCRMRS192_CLEAN_code_decode(uint8_t *m, const uint8_t *em);
#endif

View File

@ -1,10 +1,9 @@
#include "gf2x.h"
#include "nistseedexpander.h"
#include "parameters.h"
#include "parsing.h"
#include "randombytes.h"
#include <stdint.h>
#include <stdio.h>
#include <string.h>
/**
* \file gf2x.c
* \brief Implementation of multiplication of two polynomials
@ -13,7 +12,7 @@
static inline void swap(uint16_t *tab, uint16_t elt1, uint16_t elt2);
static void reduce(uint64_t *o, const uint64_t *a);
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
/**
* @brief swap two elements in a table
@ -68,7 +67,7 @@ static void reduce(uint64_t *o, const uint64_t *a) {
* @param[in] weight Hamming wifht of the sparse polynomial a2
* @param[in] ctx Pointer to a seed expander used to randomize the multiplication process
*/
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
//static uint32_t fast_convolution_mult(const uint64_t *A, const uint32_t *vB, uint64_t *C, const uint16_t w, AES_XOF_struct *ctx)
uint64_t carry;
uint32_t dec, s;
@ -77,8 +76,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
uint16_t permutation_table[16];
uint16_t permuted_sparse_vect[PARAM_OMEGA_E];
uint16_t permutation_sparse_vect[PARAM_OMEGA_E];
uint64_t tmp;
uint64_t *pt;
uint16_t *res_16;
uint8_t *res;
size_t i, j;
for (i = 0; i < 16; i++) {
@ -120,14 +120,13 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
for (i = 0; i < weight; i++) {
dec = a1[permuted_sparse_vect[i]] & 0xf;
s = a1[permuted_sparse_vect[i]] >> 4;
res_16 = ((uint16_t *) o) + s;
res = o + 2 * s;
pt = table + (permuted_table[dec] * (VEC_N_SIZE_64 + 1));
for (j = 0; j < VEC_N_SIZE_64 + 1; j++) {
*res_16++ ^= (uint16_t) pt[j];
*res_16++ ^= (uint16_t) (pt[j] >> 16);
*res_16++ ^= (uint16_t) (pt[j] >> 32);
*res_16++ ^= (uint16_t) (pt[j] >> 48);
tmp = PQCLEAN_HQCRMRS192_CLEAN_load8(res);
PQCLEAN_HQCRMRS192_CLEAN_store8(res, tmp ^ pt[j]);
res += 8;
}
}
}
@ -147,11 +146,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
* @param[in] ctx Pointer to the randomness context
*/
void PQCLEAN_HQCRMRS192_CLEAN_vect_mul(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
uint64_t tmp[2 * VEC_N_SIZE_64 + 1];
for (uint32_t j = 0; j < 2 * VEC_N_SIZE_64 + 1; j++) {
tmp[j] = 0;
}
uint64_t tmp[2 * VEC_N_SIZE_64 + 1] = {0};
fast_convolution_mult(tmp, a1, a2, weight, ctx);
fast_convolution_mult((uint8_t *) tmp, a1, a2, weight, ctx);
PQCLEAN_HQCRMRS192_CLEAN_load8_arr(tmp, 2 * VEC_N_SIZE_64 + 1, (uint8_t *) tmp, sizeof(tmp));
reduce(o, tmp);
}

View File

@ -70,7 +70,7 @@ void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_keygen(unsigned char *pk, unsigned char *s
* @param[in] theta Seed used to derive randomness required for encryption
* @param[in] pk String containing the public key
*/
void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t *m, unsigned char *theta, const unsigned char *pk) {
void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint8_t *m, unsigned char *theta, const unsigned char *pk) {
AES_XOF_struct seedexpander;
uint64_t h[VEC_N_SIZE_64] = {0};
uint64_t s[VEC_N_SIZE_64] = {0};
@ -96,7 +96,8 @@ void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t
PQCLEAN_HQCRMRS192_CLEAN_vect_add(u, r1, u, VEC_N_SIZE_64);
// Compute v = m.G by encoding the message
PQCLEAN_HQCRMRS192_CLEAN_code_encode(v, m);
PQCLEAN_HQCRMRS192_CLEAN_code_encode((uint8_t *)v, m);
PQCLEAN_HQCRMRS192_CLEAN_load8_arr(v, VEC_N1N2_SIZE_64, (uint8_t *)v, VEC_N1N2_SIZE_BYTES);
PQCLEAN_HQCRMRS192_CLEAN_vect_resize(tmp1, PARAM_N, v, PARAM_N1N2);
// Compute v = m.G + s.r2 + e
@ -117,17 +118,16 @@ void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t
* @param[in] v Vector v (second part of the ciphertext)
* @param[in] sk String containing the secret key
*/
void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_decrypt(uint64_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk) {
uint64_t x[VEC_N_SIZE_64] = {0};
uint32_t y[PARAM_OMEGA] = {0};
void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_decrypt(uint8_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk) {
uint8_t pk[PUBLIC_KEY_BYTES] = {0};
uint64_t tmp1[VEC_N_SIZE_64] = {0};
uint64_t tmp2[VEC_N_SIZE_64] = {0};
uint32_t y[PARAM_OMEGA] = {0};
AES_XOF_struct perm_seedexpander;
uint8_t perm_seed[SEED_BYTES] = {0};
// Retrieve x, y, pk from secret key
PQCLEAN_HQCRMRS192_CLEAN_hqc_secret_key_from_string(x, y, pk, sk);
PQCLEAN_HQCRMRS192_CLEAN_hqc_secret_key_from_string(tmp1, y, pk, sk);
randombytes(perm_seed, SEED_BYTES);
seedexpander_init(&perm_seedexpander, perm_seed, perm_seed + 32, SEEDEXPANDER_MAX_LENGTH);
@ -139,5 +139,6 @@ void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_decrypt(uint64_t *m, const uint64_t *u, co
// Compute m by decoding v - u.y
PQCLEAN_HQCRMRS192_CLEAN_code_decode(m, tmp2);
PQCLEAN_HQCRMRS192_CLEAN_store8_arr((uint8_t *)tmp1, VEC_N_SIZE_BYTES, tmp2, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS192_CLEAN_code_decode(m, (uint8_t *)tmp1);
}

View File

@ -13,9 +13,9 @@
void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_keygen(unsigned char *pk, unsigned char *sk);
void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t *m, unsigned char *theta, const unsigned char *pk);
void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint8_t *m, unsigned char *theta, const unsigned char *pk);
void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_decrypt(uint64_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk);
void PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_decrypt(uint8_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk);
#endif

View File

@ -47,26 +47,26 @@ int PQCLEAN_HQCRMRS192_CLEAN_crypto_kem_keypair(unsigned char *pk, unsigned char
int PQCLEAN_HQCRMRS192_CLEAN_crypto_kem_enc(unsigned char *ct, unsigned char *ss, const unsigned char *pk) {
uint8_t theta[SHA512_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint8_t m[VEC_K_SIZE_BYTES] = {0};
uint64_t u[VEC_N_SIZE_64] = {0};
uint64_t v[VEC_N1N2_SIZE_64] = {0};
unsigned char d[SHA512_BYTES] = {0};
unsigned char mc[VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES] = {0};
// Computing m
PQCLEAN_HQCRMRS192_CLEAN_vect_set_random_from_randombytes(m);
randombytes(m, VEC_K_SIZE_BYTES);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m, VEC_K_SIZE_BYTES);
// Encrypting m
PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_encrypt(u, v, m, theta, pk);
// Computing d
sha512(d, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d, m, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQCRMRS192_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m, VEC_K_SIZE_BYTES);
PQCLEAN_HQCRMRS192_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS192_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);
@ -95,7 +95,7 @@ int PQCLEAN_HQCRMRS192_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned ch
uint64_t v[VEC_N1N2_SIZE_64] = {0};
unsigned char d[SHA512_BYTES] = {0};
unsigned char pk[PUBLIC_KEY_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint8_t m[VEC_K_SIZE_BYTES] = {0};
uint8_t theta[SHA512_BYTES] = {0};
uint64_t u2[VEC_N_SIZE_64] = {0};
uint64_t v2[VEC_N1N2_SIZE_64] = {0};
@ -112,16 +112,16 @@ int PQCLEAN_HQCRMRS192_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned ch
PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_decrypt(m, u, v, sk);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m, VEC_K_SIZE_BYTES);
// Encrypting m'
PQCLEAN_HQCRMRS192_CLEAN_hqc_pke_encrypt(u2, v2, m, theta, pk);
// Computing d'
sha512(d2, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d2, m, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQCRMRS192_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m, VEC_K_SIZE_BYTES);
PQCLEAN_HQCRMRS192_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS192_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);

View File

@ -82,7 +82,8 @@ void PQCLEAN_HQCRMRS192_CLEAN_store8_arr(uint8_t *out8, size_t outlen, const uin
*/
void PQCLEAN_HQCRMRS192_CLEAN_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQCRMRS192_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS192_CLEAN_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQCRMRS192_CLEAN_vect_set_random_fixed_weight_by_coordinates(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -119,7 +121,7 @@ void PQCLEAN_HQCRMRS192_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *
*/
void PQCLEAN_HQCRMRS192_CLEAN_hqc_public_key_to_string(uint8_t *pk, const uint8_t *pk_seed, const uint64_t *s) {
memcpy(pk, pk_seed, SEED_BYTES);
memcpy(pk + SEED_BYTES, s, VEC_N_SIZE_BYTES);
PQCLEAN_HQCRMRS192_CLEAN_store8_arr(pk + SEED_BYTES, VEC_N_SIZE_BYTES, s, VEC_N_SIZE_64);
}
@ -138,10 +140,11 @@ void PQCLEAN_HQCRMRS192_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQCRMRS192_CLEAN_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS192_CLEAN_vect_set_random(&pk_seedexpander, h);
memcpy(s, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -156,9 +159,11 @@ void PQCLEAN_HQCRMRS192_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *
* @param[in] d String containing the hash d
*/
void PQCLEAN_HQCRMRS192_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
memcpy(ct, u, VEC_N_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
PQCLEAN_HQCRMRS192_CLEAN_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS192_CLEAN_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -173,7 +178,9 @@ void PQCLEAN_HQCRMRS192_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64
* @param[in] ct String containing the ciphertext
*/
void PQCLEAN_HQCRMRS192_CLEAN_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
memcpy(u, ct, VEC_N_SIZE_BYTES);
memcpy(v, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
PQCLEAN_HQCRMRS192_CLEAN_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS192_CLEAN_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

View File

@ -16,9 +16,9 @@
#define BIT0MASK(x) (-((x) & 1))
static void encode(uint32_t *word, uint8_t message);
static void encode(uint8_t *word, uint8_t message);
static void hadamard(uint16_t src[128], uint16_t dst[128]);
static void expand_and_sum(uint16_t dest[128], const uint32_t src[4 * MULTIPLICITY]);
static void expand_and_sum(uint16_t dest[128], const uint8_t src[16 * MULTIPLICITY]);
static uint8_t find_peaks(const uint16_t transform[128]);
@ -40,28 +40,38 @@ static uint8_t find_peaks(const uint16_t transform[128]);
* @param[out] word An RM(1,7) codeword
* @param[in] message A message
*/
static void encode(uint32_t *word, uint8_t message) {
// the four parts of the word are identical
// except for encoding bits 5 and 6
uint32_t first_word;
static void encode(uint8_t *word, uint8_t message) {
uint32_t e;
// bit 7 flips all the bits, do that first to save work
first_word = BIT0MASK(message >> 7);
e = BIT0MASK(message >> 7);
// bits 0, 1, 2, 3, 4 are the same for all four longs
// (Warning: in the bit matrix above, low bits are at the left!)
first_word ^= BIT0MASK(message >> 0) & 0xaaaaaaaa;
first_word ^= BIT0MASK(message >> 1) & 0xcccccccc;
first_word ^= BIT0MASK(message >> 2) & 0xf0f0f0f0;
first_word ^= BIT0MASK(message >> 3) & 0xff00ff00;
first_word ^= BIT0MASK(message >> 4) & 0xffff0000;
e ^= BIT0MASK(message >> 0) & 0xaaaaaaaa;
e ^= BIT0MASK(message >> 1) & 0xcccccccc;
e ^= BIT0MASK(message >> 2) & 0xf0f0f0f0;
e ^= BIT0MASK(message >> 3) & 0xff00ff00;
e ^= BIT0MASK(message >> 4) & 0xffff0000;
// we can store this in the first quarter
word[0] = first_word;
word[0 + 0] = (e >> 0x00) & 0xff;
word[0 + 1] = (e >> 0x08) & 0xff;
word[0 + 2] = (e >> 0x10) & 0xff;
word[0 + 3] = (e >> 0x18) & 0xff;
// bit 5 flips entries 1 and 3; bit 6 flips 2 and 3
first_word ^= BIT0MASK(message >> 5);
word[1] = first_word;
first_word ^= BIT0MASK(message >> 6);
word[3] = first_word;
first_word ^= BIT0MASK(message >> 5);
word[2] = first_word;
e ^= BIT0MASK(message >> 5);
word[4 + 0] = (e >> 0x00) & 0xff;
word[4 + 1] = (e >> 0x08) & 0xff;
word[4 + 2] = (e >> 0x10) & 0xff;
word[4 + 3] = (e >> 0x18) & 0xff;
e ^= BIT0MASK(message >> 6);
word[12 + 0] = (e >> 0x00) & 0xff;
word[12 + 1] = (e >> 0x08) & 0xff;
word[12 + 2] = (e >> 0x10) & 0xff;
word[12 + 3] = (e >> 0x18) & 0xff;
e ^= BIT0MASK(message >> 5);
word[8 + 0] = (e >> 0x00) & 0xff;
word[8 + 1] = (e >> 0x08) & 0xff;
word[8 + 2] = (e >> 0x10) & 0xff;
word[8 + 3] = (e >> 0x18) & 0xff;
}
@ -131,18 +141,19 @@ static void hadamard(uint16_t src[128], uint16_t dst[128]) {
* @param[out] dest Structure that contain the expanded codeword
* @param[in] src Structure that contain the codeword
*/
static void expand_and_sum(uint16_t dest[128], const uint32_t src[4 * MULTIPLICITY]) {
static void expand_and_sum(uint16_t dest[128], const uint8_t src[16 * MULTIPLICITY]) {
size_t part, bit, copy;
// start with the first copy
for (uint32_t part = 0; part < 4; part++) {
for (uint32_t bit = 0; bit < 32; bit++) {
dest[part * 32 + bit] = (uint16_t) ((src[part] >> bit) & 1);
for (part = 0; part < 16; part++) {
for (bit = 0; bit < 8; bit++) {
dest[part * 8 + bit] = (uint16_t) ((src[part] >> bit) & 1);
}
}
// sum the rest of the copies
for (uint32_t copy = 1; copy < MULTIPLICITY; copy++) {
for (uint32_t part = 0; part < 4; part++) {
for (uint32_t bit = 0; bit < 32; bit++) {
dest[part * 32 + bit] += (uint16_t) ((src[4 * copy + part] >> bit) & 1);
for (copy = 1; copy < MULTIPLICITY; copy++) {
for (part = 0; part < 16; part++) {
for (bit = 0; bit < 8; bit++) {
dest[part * 8 + bit] += (uint16_t) ((src[16 * copy + part] >> bit) & 1);
}
}
}
@ -188,15 +199,13 @@ static uint8_t find_peaks(const uint16_t transform[128]) {
* @param[out] cdw Array of size VEC_N1N2_SIZE_64 receiving the encoded message
* @param[in] msg Array of size VEC_N1_SIZE_64 storing the message
*/
void PQCLEAN_HQCRMRS192_CLEAN_reed_muller_encode(uint64_t *cdw, const uint64_t *msg) {
uint8_t *message_array = (uint8_t *) msg;
uint32_t *codeArray = (uint32_t *) cdw;
void PQCLEAN_HQCRMRS192_CLEAN_reed_muller_encode(uint8_t *cdw, const uint8_t *msg) {
for (size_t i = 0; i < VEC_N1_SIZE_BYTES; i++) {
// encode first word
encode(&codeArray[4 * i * MULTIPLICITY], message_array[i]);
encode(&cdw[16 * i * MULTIPLICITY], msg[i]);
// copy to other identical codewords
for (size_t copy = 1; copy < MULTIPLICITY; copy++) {
memcpy(&codeArray[4 * i * MULTIPLICITY + 4 * copy], &codeArray[4 * i * MULTIPLICITY], 4 * sizeof(uint32_t));
memcpy(&cdw[16 * i * MULTIPLICITY + 16 * copy], &cdw[16 * i * MULTIPLICITY], 16);
}
}
}
@ -212,19 +221,17 @@ void PQCLEAN_HQCRMRS192_CLEAN_reed_muller_encode(uint64_t *cdw, const uint64_t *
* @param[out] msg Array of size VEC_N1_SIZE_64 receiving the decoded message
* @param[in] cdw Array of size VEC_N1N2_SIZE_64 storing the received word
*/
void PQCLEAN_HQCRMRS192_CLEAN_reed_muller_decode(uint64_t *msg, const uint64_t *cdw) {
uint8_t *message_array = (uint8_t *) msg;
uint32_t *codeArray = (uint32_t *) cdw;
void PQCLEAN_HQCRMRS192_CLEAN_reed_muller_decode(uint8_t *msg, const uint8_t *cdw) {
uint16_t expanded[128];
uint16_t transform[128];
for (size_t i = 0; i < VEC_N1_SIZE_BYTES; i++) {
// collect the codewords
expand_and_sum(expanded, &codeArray[4 * i * MULTIPLICITY]);
expand_and_sum(expanded, &cdw[16 * i * MULTIPLICITY]);
// apply hadamard transform
hadamard(expanded, transform);
// fix the first entry to get the half Hadamard transform
transform[0] -= 64 * MULTIPLICITY;
// finish the decoding
message_array[i] = find_peaks(transform);
msg[i] = find_peaks(transform);
}
}

View File

@ -12,9 +12,9 @@
#include <stddef.h>
#include <stdint.h>
void PQCLEAN_HQCRMRS192_CLEAN_reed_muller_encode(uint64_t *cdw, const uint64_t *msg);
void PQCLEAN_HQCRMRS192_CLEAN_reed_muller_encode(uint8_t *cdw, const uint8_t *msg);
void PQCLEAN_HQCRMRS192_CLEAN_reed_muller_decode(uint64_t *msg, const uint64_t *cdw);
void PQCLEAN_HQCRMRS192_CLEAN_reed_muller_decode(uint8_t *msg, const uint8_t *cdw);
#endif

View File

@ -1,6 +1,7 @@
#include "fft.h"
#include "gf.h"
#include "parameters.h"
#include "parsing.h"
#include "reed_solomon.h"
#include <stdint.h>
#include <stdio.h>
@ -30,37 +31,31 @@ static void correct_errors(uint8_t *cdw, const uint16_t *error_values);
* @param[out] cdw Array of size VEC_N1_SIZE_64 receiving the encoded message
* @param[in] msg Array of size VEC_K_SIZE_64 storing the message
*/
void PQCLEAN_HQCRMRS192_CLEAN_reed_solomon_encode(uint64_t *cdw, const uint64_t *msg) {
void PQCLEAN_HQCRMRS192_CLEAN_reed_solomon_encode(uint8_t *cdw, const uint8_t *msg) {
uint8_t gate_value = 0;
uint16_t tmp[PARAM_G] = {0};
uint16_t PARAM_RS_POLY [] = {RS_POLY_COEFS};
uint8_t msg_bytes[PARAM_K] = {0};
uint8_t cdw_bytes[PARAM_N1] = {0};
for (size_t i = 0; i < VEC_K_SIZE_64; ++i) {
for (size_t j = 0; j < 8; ++j) {
msg_bytes[i * 8 + j] = (uint8_t) (msg[i] >> (j * 8));
}
for (size_t i = 0; i < PARAM_N1; i++) {
cdw[i] = 0;
}
for (int i = PARAM_K - 1; i >= 0; --i) {
gate_value = msg_bytes[i] ^ cdw_bytes[PARAM_N1 - PARAM_K - 1];
gate_value = msg[i] ^ cdw[PARAM_N1 - PARAM_K - 1];
for (size_t j = 0; j < PARAM_G; ++j) {
tmp[j] = PQCLEAN_HQCRMRS192_CLEAN_gf_mul(gate_value, PARAM_RS_POLY[j]);
}
for (size_t k = PARAM_N1 - PARAM_K - 1; k; --k) {
cdw_bytes[k] = cdw_bytes[k - 1] ^ tmp[k];
cdw[k] = cdw[k - 1] ^ tmp[k];
}
cdw_bytes[0] = tmp[0];
cdw[0] = tmp[0];
}
memcpy(cdw_bytes + PARAM_N1 - PARAM_K, msg_bytes, PARAM_K);
memcpy(cdw, cdw_bytes, PARAM_N1);
memcpy(cdw + PARAM_N1 - PARAM_K, msg, PARAM_K);
}
@ -312,8 +307,7 @@ static void correct_errors(uint8_t *cdw, const uint16_t *error_values) {
* @param[out] msg Array of size VEC_K_SIZE_64 receiving the decoded message
* @param[in] cdw Array of size VEC_N1_SIZE_64 storing the received word
*/
void PQCLEAN_HQCRMRS192_CLEAN_reed_solomon_decode(uint64_t *msg, uint64_t *cdw) {
uint8_t cdw_bytes[PARAM_N1] = {0};
void PQCLEAN_HQCRMRS192_CLEAN_reed_solomon_decode(uint8_t *msg, uint8_t *cdw) {
uint16_t syndromes[2 * PARAM_DELTA] = {0};
uint16_t sigma[1 << PARAM_FFT] = {0};
uint8_t error[1 << PARAM_M] = {0};
@ -321,11 +315,8 @@ void PQCLEAN_HQCRMRS192_CLEAN_reed_solomon_decode(uint64_t *msg, uint64_t *cdw)
uint16_t error_values[PARAM_N1] = {0};
uint16_t deg;
// Copy the vector in an array of bytes
memcpy(cdw_bytes, cdw, PARAM_N1);
// Calculate the 2*PARAM_DELTA syndromes
compute_syndromes(syndromes, cdw_bytes);
compute_syndromes(syndromes, cdw);
// Compute the error locator polynomial sigma
// Sigma's degree is at most PARAM_DELTA but the FFT requires the extra room
@ -341,9 +332,9 @@ void PQCLEAN_HQCRMRS192_CLEAN_reed_solomon_decode(uint64_t *msg, uint64_t *cdw)
compute_error_values(error_values, z, error);
// Correct the errors
correct_errors(cdw_bytes, error_values);
correct_errors(cdw, error_values);
// Retrieve the message from the decoded codeword
memcpy(msg, cdw_bytes + (PARAM_G - 1), PARAM_K);
memcpy(msg, cdw + (PARAM_G - 1), PARAM_K);
}

File diff suppressed because one or more lines are too long

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@ -154,22 +154,6 @@ void PQCLEAN_HQCRMRS192_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v)
/**
* @brief Generates a random vector
*
* This function generates a random binary vector. It uses the the randombytes function.
*
* @param[in] v Pointer to an array
*/
void PQCLEAN_HQCRMRS192_CLEAN_vect_set_random_from_randombytes(uint64_t *v) {
uint8_t rand_bytes [VEC_K_SIZE_BYTES] = {0};
randombytes(rand_bytes, VEC_K_SIZE_BYTES);
memcpy(v, rand_bytes, VEC_K_SIZE_BYTES);
}
/**
* @brief Adds two vectors
*
@ -185,6 +169,7 @@ void PQCLEAN_HQCRMRS192_CLEAN_vect_add(uint64_t *o, const uint64_t *v1, const ui
}
/**
* @brief Compares two vectors
*
@ -216,12 +201,12 @@ void PQCLEAN_HQCRMRS192_CLEAN_vect_resize(uint64_t *o, uint32_t size_o, const ui
val = 64 - (size_o % 64);
}
memcpy(o, v, VEC_N1N2_SIZE_BYTES);
memcpy(o, v, 8 * VEC_N1N2_SIZE_64);
for (int8_t i = 0; i < val; ++i) {
o[VEC_N1N2_SIZE_64 - 1] &= (mask >> i);
}
} else {
memcpy(o, v, CEIL_DIVIDE(size_v, 8));
memcpy(o, v, 8 * CEIL_DIVIDE(size_v, 64));
}
}

View File

@ -18,8 +18,6 @@ void PQCLEAN_HQCRMRS192_CLEAN_vect_set_random_fixed_weight(AES_XOF_struct *ctx,
void PQCLEAN_HQCRMRS192_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v);
void PQCLEAN_HQCRMRS192_CLEAN_vect_set_random_from_randombytes(uint64_t *v);
void PQCLEAN_HQCRMRS192_CLEAN_vect_add(uint64_t *o, const uint64_t *v1, const uint64_t *v2, uint32_t size);

View File

@ -82,7 +82,8 @@ void PQCLEAN_HQCRMRS256_AVX2_store8_arr(uint8_t *out8, size_t outlen, const uint
*/
void PQCLEAN_HQCRMRS256_AVX2_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQCRMRS256_AVX2_hqc_secret_key_from_string(uint64_t *x, uint64_t *y
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS256_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQCRMRS256_AVX2_vect_set_random_fixed_weight(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -138,10 +140,11 @@ void PQCLEAN_HQCRMRS256_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQCRMRS256_AVX2_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS256_AVX2_vect_set_random(&pk_seedexpander, h);
PQCLEAN_HQCRMRS256_AVX2_load8_arr(s, VEC_N_SIZE_64, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -157,8 +160,10 @@ void PQCLEAN_HQCRMRS256_AVX2_hqc_public_key_from_string(uint64_t *h, uint64_t *s
*/
void PQCLEAN_HQCRMRS256_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
PQCLEAN_HQCRMRS256_AVX2_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS256_AVX2_store8_arr(ct + VEC_N_SIZE_BYTES, VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS256_AVX2_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -174,6 +179,8 @@ void PQCLEAN_HQCRMRS256_AVX2_hqc_ciphertext_to_string(uint8_t *ct, const uint64_
*/
void PQCLEAN_HQCRMRS256_AVX2_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
PQCLEAN_HQCRMRS256_AVX2_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
PQCLEAN_HQCRMRS256_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS256_AVX2_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

View File

@ -21,8 +21,8 @@
* @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_HQCRMRS256_CLEAN_code_encode(uint64_t *em, const uint64_t *m) {
uint64_t tmp[VEC_N1_SIZE_64] = {0};
void PQCLEAN_HQCRMRS256_CLEAN_code_encode(uint8_t *em, const uint8_t *m) {
uint8_t tmp[VEC_N1_SIZE_BYTES] = {0};
PQCLEAN_HQCRMRS256_CLEAN_reed_solomon_encode(tmp, m);
PQCLEAN_HQCRMRS256_CLEAN_reed_muller_encode(em, tmp);
@ -37,11 +37,10 @@ void PQCLEAN_HQCRMRS256_CLEAN_code_encode(uint64_t *em, const uint64_t *m) {
* @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_HQCRMRS256_CLEAN_code_decode(uint64_t *m, const uint64_t *em) {
uint64_t tmp[VEC_N1_SIZE_64] = {0};
void PQCLEAN_HQCRMRS256_CLEAN_code_decode(uint8_t *m, const uint8_t *em) {
uint8_t tmp[VEC_N1_SIZE_BYTES] = {0};
PQCLEAN_HQCRMRS256_CLEAN_reed_muller_decode(tmp, em);
PQCLEAN_HQCRMRS256_CLEAN_reed_solomon_decode(m, tmp);
}

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@ -12,9 +12,9 @@
#include <stddef.h>
#include <stdint.h>
void PQCLEAN_HQCRMRS256_CLEAN_code_encode(uint64_t *em, const uint64_t *message);
void PQCLEAN_HQCRMRS256_CLEAN_code_encode(uint8_t *em, const uint8_t *message);
void PQCLEAN_HQCRMRS256_CLEAN_code_decode(uint64_t *m, const uint64_t *em);
void PQCLEAN_HQCRMRS256_CLEAN_code_decode(uint8_t *m, const uint8_t *em);
#endif

View File

@ -1,10 +1,9 @@
#include "gf2x.h"
#include "nistseedexpander.h"
#include "parameters.h"
#include "parsing.h"
#include "randombytes.h"
#include <stdint.h>
#include <stdio.h>
#include <string.h>
/**
* \file gf2x.c
* \brief Implementation of multiplication of two polynomials
@ -13,7 +12,7 @@
static inline void swap(uint16_t *tab, uint16_t elt1, uint16_t elt2);
static void reduce(uint64_t *o, const uint64_t *a);
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx);
/**
* @brief swap two elements in a table
@ -68,7 +67,7 @@ static void reduce(uint64_t *o, const uint64_t *a) {
* @param[in] weight Hamming wifht of the sparse polynomial a2
* @param[in] ctx Pointer to a seed expander used to randomize the multiplication process
*/
static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
static void fast_convolution_mult(uint8_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
//static uint32_t fast_convolution_mult(const uint64_t *A, const uint32_t *vB, uint64_t *C, const uint16_t w, AES_XOF_struct *ctx)
uint64_t carry;
uint32_t dec, s;
@ -77,8 +76,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
uint16_t permutation_table[16];
uint16_t permuted_sparse_vect[PARAM_OMEGA_E];
uint16_t permutation_sparse_vect[PARAM_OMEGA_E];
uint64_t tmp;
uint64_t *pt;
uint16_t *res_16;
uint8_t *res;
size_t i, j;
for (i = 0; i < 16; i++) {
@ -120,14 +120,13 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
for (i = 0; i < weight; i++) {
dec = a1[permuted_sparse_vect[i]] & 0xf;
s = a1[permuted_sparse_vect[i]] >> 4;
res_16 = ((uint16_t *) o) + s;
res = o + 2 * s;
pt = table + (permuted_table[dec] * (VEC_N_SIZE_64 + 1));
for (j = 0; j < VEC_N_SIZE_64 + 1; j++) {
*res_16++ ^= (uint16_t) pt[j];
*res_16++ ^= (uint16_t) (pt[j] >> 16);
*res_16++ ^= (uint16_t) (pt[j] >> 32);
*res_16++ ^= (uint16_t) (pt[j] >> 48);
tmp = PQCLEAN_HQCRMRS256_CLEAN_load8(res);
PQCLEAN_HQCRMRS256_CLEAN_store8(res, tmp ^ pt[j]);
res += 8;
}
}
}
@ -147,11 +146,9 @@ static void fast_convolution_mult(uint64_t *o, const uint32_t *a1, const uint64_
* @param[in] ctx Pointer to the randomness context
*/
void PQCLEAN_HQCRMRS256_CLEAN_vect_mul(uint64_t *o, const uint32_t *a1, const uint64_t *a2, uint16_t weight, AES_XOF_struct *ctx) {
uint64_t tmp[2 * VEC_N_SIZE_64 + 1];
for (uint32_t j = 0; j < 2 * VEC_N_SIZE_64 + 1; j++) {
tmp[j] = 0;
}
uint64_t tmp[2 * VEC_N_SIZE_64 + 1] = {0};
fast_convolution_mult(tmp, a1, a2, weight, ctx);
fast_convolution_mult((uint8_t *) tmp, a1, a2, weight, ctx);
PQCLEAN_HQCRMRS256_CLEAN_load8_arr(tmp, 2 * VEC_N_SIZE_64 + 1, (uint8_t *) tmp, sizeof(tmp));
reduce(o, tmp);
}

View File

@ -70,7 +70,7 @@ void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_keygen(unsigned char *pk, unsigned char *s
* @param[in] theta Seed used to derive randomness required for encryption
* @param[in] pk String containing the public key
*/
void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t *m, unsigned char *theta, const unsigned char *pk) {
void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint8_t *m, unsigned char *theta, const unsigned char *pk) {
AES_XOF_struct seedexpander;
uint64_t h[VEC_N_SIZE_64] = {0};
uint64_t s[VEC_N_SIZE_64] = {0};
@ -96,7 +96,8 @@ void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t
PQCLEAN_HQCRMRS256_CLEAN_vect_add(u, r1, u, VEC_N_SIZE_64);
// Compute v = m.G by encoding the message
PQCLEAN_HQCRMRS256_CLEAN_code_encode(v, m);
PQCLEAN_HQCRMRS256_CLEAN_code_encode((uint8_t *)v, m);
PQCLEAN_HQCRMRS256_CLEAN_load8_arr(v, VEC_N1N2_SIZE_64, (uint8_t *)v, VEC_N1N2_SIZE_BYTES);
PQCLEAN_HQCRMRS256_CLEAN_vect_resize(tmp1, PARAM_N, v, PARAM_N1N2);
// Compute v = m.G + s.r2 + e
@ -117,17 +118,16 @@ void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t
* @param[in] v Vector v (second part of the ciphertext)
* @param[in] sk String containing the secret key
*/
void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_decrypt(uint64_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk) {
uint64_t x[VEC_N_SIZE_64] = {0};
uint32_t y[PARAM_OMEGA] = {0};
void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_decrypt(uint8_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk) {
uint8_t pk[PUBLIC_KEY_BYTES] = {0};
uint64_t tmp1[VEC_N_SIZE_64] = {0};
uint64_t tmp2[VEC_N_SIZE_64] = {0};
uint32_t y[PARAM_OMEGA] = {0};
AES_XOF_struct perm_seedexpander;
uint8_t perm_seed[SEED_BYTES] = {0};
// Retrieve x, y, pk from secret key
PQCLEAN_HQCRMRS256_CLEAN_hqc_secret_key_from_string(x, y, pk, sk);
PQCLEAN_HQCRMRS256_CLEAN_hqc_secret_key_from_string(tmp1, y, pk, sk);
randombytes(perm_seed, SEED_BYTES);
seedexpander_init(&perm_seedexpander, perm_seed, perm_seed + 32, SEEDEXPANDER_MAX_LENGTH);
@ -139,5 +139,6 @@ void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_decrypt(uint64_t *m, const uint64_t *u, co
// Compute m by decoding v - u.y
PQCLEAN_HQCRMRS256_CLEAN_code_decode(m, tmp2);
PQCLEAN_HQCRMRS256_CLEAN_store8_arr((uint8_t *)tmp1, VEC_N_SIZE_BYTES, tmp2, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS256_CLEAN_code_decode(m, (uint8_t *)tmp1);
}

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@ -13,9 +13,9 @@
void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_keygen(unsigned char *pk, unsigned char *sk);
void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint64_t *m, unsigned char *theta, const unsigned char *pk);
void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_encrypt(uint64_t *u, uint64_t *v, uint8_t *m, unsigned char *theta, const unsigned char *pk);
void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_decrypt(uint64_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk);
void PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_decrypt(uint8_t *m, const uint64_t *u, const uint64_t *v, const unsigned char *sk);
#endif

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@ -47,26 +47,26 @@ int PQCLEAN_HQCRMRS256_CLEAN_crypto_kem_keypair(unsigned char *pk, unsigned char
int PQCLEAN_HQCRMRS256_CLEAN_crypto_kem_enc(unsigned char *ct, unsigned char *ss, const unsigned char *pk) {
uint8_t theta[SHA512_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint8_t m[VEC_K_SIZE_BYTES] = {0};
uint64_t u[VEC_N_SIZE_64] = {0};
uint64_t v[VEC_N1N2_SIZE_64] = {0};
unsigned char d[SHA512_BYTES] = {0};
unsigned char mc[VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES] = {0};
// Computing m
PQCLEAN_HQCRMRS256_CLEAN_vect_set_random_from_randombytes(m);
randombytes(m, VEC_K_SIZE_BYTES);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m, VEC_K_SIZE_BYTES);
// Encrypting m
PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_encrypt(u, v, m, theta, pk);
// Computing d
sha512(d, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d, m, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQCRMRS256_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m, VEC_K_SIZE_BYTES);
PQCLEAN_HQCRMRS256_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS256_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);
@ -95,7 +95,7 @@ int PQCLEAN_HQCRMRS256_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned ch
uint64_t v[VEC_N1N2_SIZE_64] = {0};
unsigned char d[SHA512_BYTES] = {0};
unsigned char pk[PUBLIC_KEY_BYTES] = {0};
uint64_t m[VEC_K_SIZE_64] = {0};
uint8_t m[VEC_K_SIZE_BYTES] = {0};
uint8_t theta[SHA512_BYTES] = {0};
uint64_t u2[VEC_N_SIZE_64] = {0};
uint64_t v2[VEC_N1N2_SIZE_64] = {0};
@ -112,16 +112,16 @@ int PQCLEAN_HQCRMRS256_CLEAN_crypto_kem_dec(unsigned char *ss, const unsigned ch
PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_decrypt(m, u, v, sk);
// Computing theta
sha3_512(theta, (uint8_t *) m, VEC_K_SIZE_BYTES);
sha3_512(theta, m, VEC_K_SIZE_BYTES);
// Encrypting m'
PQCLEAN_HQCRMRS256_CLEAN_hqc_pke_encrypt(u2, v2, m, theta, pk);
// Computing d'
sha512(d2, (unsigned char *) m, VEC_K_SIZE_BYTES);
sha512(d2, m, VEC_K_SIZE_BYTES);
// Computing shared secret
PQCLEAN_HQCRMRS256_CLEAN_store8_arr(mc, VEC_K_SIZE_BYTES, m, VEC_K_SIZE_64);
memcpy(mc, m, VEC_K_SIZE_BYTES);
PQCLEAN_HQCRMRS256_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
PQCLEAN_HQCRMRS256_CLEAN_store8_arr(mc + VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
sha512(ss, mc, VEC_K_SIZE_BYTES + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES);

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@ -82,7 +82,8 @@ void PQCLEAN_HQCRMRS256_CLEAN_store8_arr(uint8_t *out8, size_t outlen, const uin
*/
void PQCLEAN_HQCRMRS256_CLEAN_hqc_secret_key_to_string(uint8_t *sk, const uint8_t *sk_seed, const uint8_t *pk) {
memcpy(sk, sk_seed, SEED_BYTES);
memcpy(sk + SEED_BYTES, pk, PUBLIC_KEY_BYTES);
sk += SEED_BYTES;
memcpy(sk, pk, PUBLIC_KEY_BYTES);
}
/**
@ -101,11 +102,12 @@ void PQCLEAN_HQCRMRS256_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *
uint8_t sk_seed[SEED_BYTES] = {0};
memcpy(sk_seed, sk, SEED_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
sk += SEED_BYTES;
memcpy(pk, sk, PUBLIC_KEY_BYTES);
seedexpander_init(&sk_seedexpander, sk_seed, sk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS256_CLEAN_vect_set_random_fixed_weight(&sk_seedexpander, x, PARAM_OMEGA);
PQCLEAN_HQCRMRS256_CLEAN_vect_set_random_fixed_weight_by_coordinates(&sk_seedexpander, y, PARAM_OMEGA);
memcpy(pk, sk + SEED_BYTES, PUBLIC_KEY_BYTES);
}
/**
@ -119,7 +121,7 @@ void PQCLEAN_HQCRMRS256_CLEAN_hqc_secret_key_from_string(uint64_t *x, uint32_t *
*/
void PQCLEAN_HQCRMRS256_CLEAN_hqc_public_key_to_string(uint8_t *pk, const uint8_t *pk_seed, const uint64_t *s) {
memcpy(pk, pk_seed, SEED_BYTES);
memcpy(pk + SEED_BYTES, s, VEC_N_SIZE_BYTES);
PQCLEAN_HQCRMRS256_CLEAN_store8_arr(pk + SEED_BYTES, VEC_N_SIZE_BYTES, s, VEC_N_SIZE_64);
}
@ -138,10 +140,11 @@ void PQCLEAN_HQCRMRS256_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *
uint8_t pk_seed[SEED_BYTES] = {0};
memcpy(pk_seed, pk, SEED_BYTES);
pk += SEED_BYTES;
PQCLEAN_HQCRMRS256_CLEAN_load8_arr(s, VEC_N_SIZE_64, pk, VEC_N_SIZE_BYTES);
seedexpander_init(&pk_seedexpander, pk_seed, pk_seed + 32, SEEDEXPANDER_MAX_LENGTH);
PQCLEAN_HQCRMRS256_CLEAN_vect_set_random(&pk_seedexpander, h);
memcpy(s, pk + SEED_BYTES, VEC_N_SIZE_BYTES);
}
@ -156,9 +159,11 @@ void PQCLEAN_HQCRMRS256_CLEAN_hqc_public_key_from_string(uint64_t *h, uint64_t *
* @param[in] d String containing the hash d
*/
void PQCLEAN_HQCRMRS256_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64_t *u, const uint64_t *v, const uint8_t *d) {
memcpy(ct, u, VEC_N_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES, v, VEC_N1N2_SIZE_BYTES);
memcpy(ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, d, SHA512_BYTES);
PQCLEAN_HQCRMRS256_CLEAN_store8_arr(ct, VEC_N_SIZE_BYTES, u, VEC_N_SIZE_64);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS256_CLEAN_store8_arr(ct, VEC_N1N2_SIZE_BYTES, v, VEC_N1N2_SIZE_64);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(ct, d, SHA512_BYTES);
}
@ -173,7 +178,9 @@ void PQCLEAN_HQCRMRS256_CLEAN_hqc_ciphertext_to_string(uint8_t *ct, const uint64
* @param[in] ct String containing the ciphertext
*/
void PQCLEAN_HQCRMRS256_CLEAN_hqc_ciphertext_from_string(uint64_t *u, uint64_t *v, uint8_t *d, const uint8_t *ct) {
memcpy(u, ct, VEC_N_SIZE_BYTES);
memcpy(v, ct + VEC_N_SIZE_BYTES, VEC_N1N2_SIZE_BYTES);
memcpy(d, ct + VEC_N_SIZE_BYTES + VEC_N1N2_SIZE_BYTES, SHA512_BYTES);
PQCLEAN_HQCRMRS256_CLEAN_load8_arr(u, VEC_N_SIZE_64, ct, VEC_N_SIZE_BYTES);
ct += VEC_N_SIZE_BYTES;
PQCLEAN_HQCRMRS256_CLEAN_load8_arr(v, VEC_N1N2_SIZE_64, ct, VEC_N1N2_SIZE_BYTES);
ct += VEC_N1N2_SIZE_BYTES;
memcpy(d, ct, SHA512_BYTES);
}

View File

@ -16,9 +16,9 @@
#define BIT0MASK(x) (-((x) & 1))
static void encode(uint32_t *word, uint8_t message);
static void encode(uint8_t *word, uint8_t message);
static void hadamard(uint16_t src[128], uint16_t dst[128]);
static void expand_and_sum(uint16_t dest[128], const uint32_t src[4 * MULTIPLICITY]);
static void expand_and_sum(uint16_t dest[128], const uint8_t src[16 * MULTIPLICITY]);
static uint8_t find_peaks(const uint16_t transform[128]);
@ -40,28 +40,38 @@ static uint8_t find_peaks(const uint16_t transform[128]);
* @param[out] word An RM(1,7) codeword
* @param[in] message A message
*/
static void encode(uint32_t *word, uint8_t message) {
// the four parts of the word are identical
// except for encoding bits 5 and 6
uint32_t first_word;
static void encode(uint8_t *word, uint8_t message) {
uint32_t e;
// bit 7 flips all the bits, do that first to save work
first_word = BIT0MASK(message >> 7);
e = BIT0MASK(message >> 7);
// bits 0, 1, 2, 3, 4 are the same for all four longs
// (Warning: in the bit matrix above, low bits are at the left!)
first_word ^= BIT0MASK(message >> 0) & 0xaaaaaaaa;
first_word ^= BIT0MASK(message >> 1) & 0xcccccccc;
first_word ^= BIT0MASK(message >> 2) & 0xf0f0f0f0;
first_word ^= BIT0MASK(message >> 3) & 0xff00ff00;
first_word ^= BIT0MASK(message >> 4) & 0xffff0000;
e ^= BIT0MASK(message >> 0) & 0xaaaaaaaa;
e ^= BIT0MASK(message >> 1) & 0xcccccccc;
e ^= BIT0MASK(message >> 2) & 0xf0f0f0f0;
e ^= BIT0MASK(message >> 3) & 0xff00ff00;
e ^= BIT0MASK(message >> 4) & 0xffff0000;
// we can store this in the first quarter
word[0] = first_word;
word[0 + 0] = (e >> 0x00) & 0xff;
word[0 + 1] = (e >> 0x08) & 0xff;
word[0 + 2] = (e >> 0x10) & 0xff;
word[0 + 3] = (e >> 0x18) & 0xff;
// bit 5 flips entries 1 and 3; bit 6 flips 2 and 3
first_word ^= BIT0MASK(message >> 5);
word[1] = first_word;
first_word ^= BIT0MASK(message >> 6);
word[3] = first_word;
first_word ^= BIT0MASK(message >> 5);
word[2] = first_word;
e ^= BIT0MASK(message >> 5);
word[4 + 0] = (e >> 0x00) & 0xff;
word[4 + 1] = (e >> 0x08) & 0xff;
word[4 + 2] = (e >> 0x10) & 0xff;
word[4 + 3] = (e >> 0x18) & 0xff;
e ^= BIT0MASK(message >> 6);
word[12 + 0] = (e >> 0x00) & 0xff;
word[12 + 1] = (e >> 0x08) & 0xff;
word[12 + 2] = (e >> 0x10) & 0xff;
word[12 + 3] = (e >> 0x18) & 0xff;
e ^= BIT0MASK(message >> 5);
word[8 + 0] = (e >> 0x00) & 0xff;
word[8 + 1] = (e >> 0x08) & 0xff;
word[8 + 2] = (e >> 0x10) & 0xff;
word[8 + 3] = (e >> 0x18) & 0xff;
}
@ -131,18 +141,19 @@ static void hadamard(uint16_t src[128], uint16_t dst[128]) {
* @param[out] dest Structure that contain the expanded codeword
* @param[in] src Structure that contain the codeword
*/
static void expand_and_sum(uint16_t dest[128], const uint32_t src[4 * MULTIPLICITY]) {
static void expand_and_sum(uint16_t dest[128], const uint8_t src[16 * MULTIPLICITY]) {
size_t part, bit, copy;
// start with the first copy
for (uint32_t part = 0; part < 4; part++) {
for (uint32_t bit = 0; bit < 32; bit++) {
dest[part * 32 + bit] = (uint16_t) ((src[part] >> bit) & 1);
for (part = 0; part < 16; part++) {
for (bit = 0; bit < 8; bit++) {
dest[part * 8 + bit] = (uint16_t) ((src[part] >> bit) & 1);
}
}
// sum the rest of the copies
for (uint32_t copy = 1; copy < MULTIPLICITY; copy++) {
for (uint32_t part = 0; part < 4; part++) {
for (uint32_t bit = 0; bit < 32; bit++) {
dest[part * 32 + bit] += (uint16_t) ((src[4 * copy + part] >> bit) & 1);
for (copy = 1; copy < MULTIPLICITY; copy++) {
for (part = 0; part < 16; part++) {
for (bit = 0; bit < 8; bit++) {
dest[part * 8 + bit] += (uint16_t) ((src[16 * copy + part] >> bit) & 1);
}
}
}
@ -188,15 +199,13 @@ static uint8_t find_peaks(const uint16_t transform[128]) {
* @param[out] cdw Array of size VEC_N1N2_SIZE_64 receiving the encoded message
* @param[in] msg Array of size VEC_N1_SIZE_64 storing the message
*/
void PQCLEAN_HQCRMRS256_CLEAN_reed_muller_encode(uint64_t *cdw, const uint64_t *msg) {
uint8_t *message_array = (uint8_t *) msg;
uint32_t *codeArray = (uint32_t *) cdw;
void PQCLEAN_HQCRMRS256_CLEAN_reed_muller_encode(uint8_t *cdw, const uint8_t *msg) {
for (size_t i = 0; i < VEC_N1_SIZE_BYTES; i++) {
// encode first word
encode(&codeArray[4 * i * MULTIPLICITY], message_array[i]);
encode(&cdw[16 * i * MULTIPLICITY], msg[i]);
// copy to other identical codewords
for (size_t copy = 1; copy < MULTIPLICITY; copy++) {
memcpy(&codeArray[4 * i * MULTIPLICITY + 4 * copy], &codeArray[4 * i * MULTIPLICITY], 4 * sizeof(uint32_t));
memcpy(&cdw[16 * i * MULTIPLICITY + 16 * copy], &cdw[16 * i * MULTIPLICITY], 16);
}
}
}
@ -212,19 +221,17 @@ void PQCLEAN_HQCRMRS256_CLEAN_reed_muller_encode(uint64_t *cdw, const uint64_t *
* @param[out] msg Array of size VEC_N1_SIZE_64 receiving the decoded message
* @param[in] cdw Array of size VEC_N1N2_SIZE_64 storing the received word
*/
void PQCLEAN_HQCRMRS256_CLEAN_reed_muller_decode(uint64_t *msg, const uint64_t *cdw) {
uint8_t *message_array = (uint8_t *) msg;
uint32_t *codeArray = (uint32_t *) cdw;
void PQCLEAN_HQCRMRS256_CLEAN_reed_muller_decode(uint8_t *msg, const uint8_t *cdw) {
uint16_t expanded[128];
uint16_t transform[128];
for (size_t i = 0; i < VEC_N1_SIZE_BYTES; i++) {
// collect the codewords
expand_and_sum(expanded, &codeArray[4 * i * MULTIPLICITY]);
expand_and_sum(expanded, &cdw[16 * i * MULTIPLICITY]);
// apply hadamard transform
hadamard(expanded, transform);
// fix the first entry to get the half Hadamard transform
transform[0] -= 64 * MULTIPLICITY;
// finish the decoding
message_array[i] = find_peaks(transform);
msg[i] = find_peaks(transform);
}
}

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@ -12,9 +12,9 @@
#include <stddef.h>
#include <stdint.h>
void PQCLEAN_HQCRMRS256_CLEAN_reed_muller_encode(uint64_t *cdw, const uint64_t *msg);
void PQCLEAN_HQCRMRS256_CLEAN_reed_muller_encode(uint8_t *cdw, const uint8_t *msg);
void PQCLEAN_HQCRMRS256_CLEAN_reed_muller_decode(uint64_t *msg, const uint64_t *cdw);
void PQCLEAN_HQCRMRS256_CLEAN_reed_muller_decode(uint8_t *msg, const uint8_t *cdw);
#endif

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@ -1,6 +1,7 @@
#include "fft.h"
#include "gf.h"
#include "parameters.h"
#include "parsing.h"
#include "reed_solomon.h"
#include <stdint.h>
#include <stdio.h>
@ -30,37 +31,31 @@ static void correct_errors(uint8_t *cdw, const uint16_t *error_values);
* @param[out] cdw Array of size VEC_N1_SIZE_64 receiving the encoded message
* @param[in] msg Array of size VEC_K_SIZE_64 storing the message
*/
void PQCLEAN_HQCRMRS256_CLEAN_reed_solomon_encode(uint64_t *cdw, const uint64_t *msg) {
void PQCLEAN_HQCRMRS256_CLEAN_reed_solomon_encode(uint8_t *cdw, const uint8_t *msg) {
uint8_t gate_value = 0;
uint16_t tmp[PARAM_G] = {0};
uint16_t PARAM_RS_POLY [] = {RS_POLY_COEFS};
uint8_t msg_bytes[PARAM_K] = {0};
uint8_t cdw_bytes[PARAM_N1] = {0};
for (size_t i = 0; i < VEC_K_SIZE_64; ++i) {
for (size_t j = 0; j < 8; ++j) {
msg_bytes[i * 8 + j] = (uint8_t) (msg[i] >> (j * 8));
}
for (size_t i = 0; i < PARAM_N1; i++) {
cdw[i] = 0;
}
for (int i = PARAM_K - 1; i >= 0; --i) {
gate_value = msg_bytes[i] ^ cdw_bytes[PARAM_N1 - PARAM_K - 1];
gate_value = msg[i] ^ cdw[PARAM_N1 - PARAM_K - 1];
for (size_t j = 0; j < PARAM_G; ++j) {
tmp[j] = PQCLEAN_HQCRMRS256_CLEAN_gf_mul(gate_value, PARAM_RS_POLY[j]);
}
for (size_t k = PARAM_N1 - PARAM_K - 1; k; --k) {
cdw_bytes[k] = cdw_bytes[k - 1] ^ tmp[k];
cdw[k] = cdw[k - 1] ^ tmp[k];
}
cdw_bytes[0] = tmp[0];
cdw[0] = tmp[0];
}
memcpy(cdw_bytes + PARAM_N1 - PARAM_K, msg_bytes, PARAM_K);
memcpy(cdw, cdw_bytes, PARAM_N1);
memcpy(cdw + PARAM_N1 - PARAM_K, msg, PARAM_K);
}
@ -312,8 +307,7 @@ static void correct_errors(uint8_t *cdw, const uint16_t *error_values) {
* @param[out] msg Array of size VEC_K_SIZE_64 receiving the decoded message
* @param[in] cdw Array of size VEC_N1_SIZE_64 storing the received word
*/
void PQCLEAN_HQCRMRS256_CLEAN_reed_solomon_decode(uint64_t *msg, uint64_t *cdw) {
uint8_t cdw_bytes[PARAM_N1] = {0};
void PQCLEAN_HQCRMRS256_CLEAN_reed_solomon_decode(uint8_t *msg, uint8_t *cdw) {
uint16_t syndromes[2 * PARAM_DELTA] = {0};
uint16_t sigma[1 << PARAM_FFT] = {0};
uint8_t error[1 << PARAM_M] = {0};
@ -321,11 +315,8 @@ void PQCLEAN_HQCRMRS256_CLEAN_reed_solomon_decode(uint64_t *msg, uint64_t *cdw)
uint16_t error_values[PARAM_N1] = {0};
uint16_t deg;
// Copy the vector in an array of bytes
memcpy(cdw_bytes, cdw, PARAM_N1);
// Calculate the 2*PARAM_DELTA syndromes
compute_syndromes(syndromes, cdw_bytes);
compute_syndromes(syndromes, cdw);
// Compute the error locator polynomial sigma
// Sigma's degree is at most PARAM_DELTA but the FFT requires the extra room
@ -341,9 +332,9 @@ void PQCLEAN_HQCRMRS256_CLEAN_reed_solomon_decode(uint64_t *msg, uint64_t *cdw)
compute_error_values(error_values, z, error);
// Correct the errors
correct_errors(cdw_bytes, error_values);
correct_errors(cdw, error_values);
// Retrieve the message from the decoded codeword
memcpy(msg, cdw_bytes + (PARAM_G - 1), PARAM_K);
memcpy(msg, cdw + (PARAM_G - 1), PARAM_K);
}

File diff suppressed because one or more lines are too long

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@ -154,22 +154,6 @@ void PQCLEAN_HQCRMRS256_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v)
/**
* @brief Generates a random vector
*
* This function generates a random binary vector. It uses the the randombytes function.
*
* @param[in] v Pointer to an array
*/
void PQCLEAN_HQCRMRS256_CLEAN_vect_set_random_from_randombytes(uint64_t *v) {
uint8_t rand_bytes [VEC_K_SIZE_BYTES] = {0};
randombytes(rand_bytes, VEC_K_SIZE_BYTES);
memcpy(v, rand_bytes, VEC_K_SIZE_BYTES);
}
/**
* @brief Adds two vectors
*
@ -185,6 +169,7 @@ void PQCLEAN_HQCRMRS256_CLEAN_vect_add(uint64_t *o, const uint64_t *v1, const ui
}
/**
* @brief Compares two vectors
*
@ -216,12 +201,12 @@ void PQCLEAN_HQCRMRS256_CLEAN_vect_resize(uint64_t *o, uint32_t size_o, const ui
val = 64 - (size_o % 64);
}
memcpy(o, v, VEC_N1N2_SIZE_BYTES);
memcpy(o, v, 8 * VEC_N1N2_SIZE_64);
for (int8_t i = 0; i < val; ++i) {
o[VEC_N1N2_SIZE_64 - 1] &= (mask >> i);
}
} else {
memcpy(o, v, CEIL_DIVIDE(size_v, 8));
memcpy(o, v, 8 * CEIL_DIVIDE(size_v, 64));
}
}

View File

@ -18,8 +18,6 @@ void PQCLEAN_HQCRMRS256_CLEAN_vect_set_random_fixed_weight(AES_XOF_struct *ctx,
void PQCLEAN_HQCRMRS256_CLEAN_vect_set_random(AES_XOF_struct *ctx, uint64_t *v);
void PQCLEAN_HQCRMRS256_CLEAN_vect_set_random_from_randombytes(uint64_t *v);
void PQCLEAN_HQCRMRS256_CLEAN_vect_add(uint64_t *o, const uint64_t *v1, const uint64_t *v2, uint32_t size);

View File

@ -63,8 +63,6 @@ consistency_checks:
scheme: hqc-rmrs-128
implementation: clean
files:
- code.h
- hqc.h
- source:
scheme: hqc-rmrs-128
implementation: avx2
@ -83,8 +81,6 @@ consistency_checks:
scheme: hqc-rmrs-192
implementation: clean
files:
- code.h
- hqc.h
- source:
scheme: hqc-rmrs-192
implementation: avx2
@ -102,8 +98,6 @@ consistency_checks:
scheme: hqc-rmrs-256
implementation: clean
files:
- code.h
- hqc.h
- source:
scheme: hqc-rmrs-256
implementation: avx2

View File

@ -19,7 +19,6 @@ consistency_checks:
- parsing.h
- repetition.h
- vector.h
- bch.c
- code.c
- fft.c
- gf2x.c
@ -27,6 +26,7 @@ consistency_checks:
- hqc.c
- kem.c
- parsing.c
- vector.c
- source:
scheme: hqc-192
implementation: avx2
@ -46,7 +46,6 @@ consistency_checks:
- parsing.h
- repetition.h
- vector.h
- bch.c
- code.c
- fft.c
- gf2x.c
@ -54,6 +53,7 @@ consistency_checks:
- hqc.c
- kem.c
- parsing.c
- vector.c
- source:
scheme: hqc-256
implementation: avx2
@ -64,16 +64,13 @@ consistency_checks:
scheme: hqc-rmrs-128
implementation: clean
files:
- code.h
- gf2x.h
- hqc.h
- parsing.h
- vector.h
- gf2x.c
- gf.c
- hqc.c
- kem.c
- parsing.c
- vector.c
- source:
scheme: hqc-rmrs-128
implementation: avx2
@ -84,16 +81,13 @@ consistency_checks:
scheme: hqc-rmrs-192
implementation: clean
files:
- code.h
- gf2x.h
- hqc.h
- parsing.h
- vector.h
- gf2x.c
- gf.c
- hqc.c
- kem.c
- parsing.c
- vector.c
- source:
scheme: hqc-rmrs-192
implementation: avx2
@ -104,16 +98,13 @@ consistency_checks:
scheme: hqc-rmrs-256
implementation: clean
files:
- code.h
- gf2x.h
- hqc.h
- parsing.h
- vector.h
- gf2x.c
- gf.c
- hqc.c
- kem.c
- parsing.c
- vector.c
- source:
scheme: hqc-rmrs-256
implementation: avx2

View File

@ -36,8 +36,6 @@ consistency_checks:
scheme: hqc-rmrs-128
implementation: clean
files:
- code.h
- hqc.h
- source:
scheme: hqc-rmrs-128
implementation: avx2
@ -54,8 +52,6 @@ consistency_checks:
scheme: hqc-rmrs-192
implementation: clean
files:
- code.h
- hqc.h
- source:
scheme: hqc-rmrs-192
implementation: avx2
@ -73,8 +69,6 @@ consistency_checks:
scheme: hqc-rmrs-256
implementation: clean
files:
- code.h
- hqc.h
- source:
scheme: hqc-rmrs-256
implementation: avx2

View File

@ -38,15 +38,11 @@ consistency_checks:
scheme: hqc-rmrs-128
implementation: clean
files:
- code.h
- gf2x.h
- hqc.h
- parsing.h
- vector.h
- gf2x.c
- gf.c
- hqc.c
- kem.c
- parsing.c
- vector.c
- source:
@ -59,15 +55,11 @@ consistency_checks:
scheme: hqc-rmrs-192
implementation: clean
files:
- code.h
- gf2x.h
- hqc.h
- parsing.h
- vector.h
- gf2x.c
- gf.c
- hqc.c
- kem.c
- parsing.c
- vector.c
- source:
@ -80,15 +72,11 @@ consistency_checks:
scheme: hqc-rmrs-256
implementation: clean
files:
- code.h
- gf2x.h
- hqc.h
- parsing.h
- vector.h
- gf2x.c
- gf.c
- hqc.c
- kem.c
- parsing.c
- vector.c
- source:

View File

@ -10,8 +10,6 @@ consistency_checks:
scheme: hqc-rmrs-128
implementation: clean
files:
- code.h
- hqc.h
- source:
scheme: hqc-rmrs-128
implementation: avx2
@ -28,8 +26,6 @@ consistency_checks:
scheme: hqc-rmrs-192
implementation: clean
files:
- code.h
- hqc.h
- source:
scheme: hqc-rmrs-192
implementation: avx2
@ -46,8 +42,6 @@ consistency_checks:
scheme: hqc-rmrs-256
implementation: clean
files:
- code.h
- hqc.h
- source:
scheme: hqc-rmrs-256
implementation: avx2

View File

@ -10,15 +10,11 @@ consistency_checks:
scheme: hqc-rmrs-128
implementation: clean
files:
- code.h
- gf2x.h
- hqc.h
- parsing.h
- vector.h
- gf2x.c
- gf.c
- hqc.c
- kem.c
- parsing.c
- vector.c
- source:
@ -31,15 +27,11 @@ consistency_checks:
scheme: hqc-rmrs-192
implementation: clean
files:
- code.h
- gf2x.h
- hqc.h
- parsing.h
- vector.h
- gf2x.c
- gf.c
- hqc.c
- kem.c
- parsing.c
- vector.c
- source:
@ -52,15 +44,11 @@ consistency_checks:
scheme: hqc-rmrs-256
implementation: clean
files:
- code.h
- gf2x.h
- hqc.h
- parsing.h
- vector.h
- gf2x.c
- gf.c
- hqc.c
- kem.c
- parsing.c
- vector.c
- source:

View File

@ -4,27 +4,16 @@ consistency_checks:
implementation: clean
files:
- api.h
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- reed_solomon.h
- code.c
- fft.c
- reed_solomon.c
- source:
scheme: hqc-rmrs-192
implementation: clean
files:
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- code.c
- fft.c
- reed_solomon.c
- source:
scheme: hqc-rmrs-192
implementation: avx2
@ -50,15 +39,9 @@ consistency_checks:
scheme: hqc-rmrs-256
implementation: clean
files:
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- reed_solomon.h
- code.c
- fft.c
- reed_solomon.c
- source:
scheme: hqc-rmrs-256
implementation: avx2

View File

@ -4,15 +4,9 @@ consistency_checks:
implementation: avx2
files:
- api.h
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- reed_solomon.h
- code.c
- fft.c
- reed_solomon.c
- source:
scheme: hqc-rmrs-192
implementation: clean
@ -39,14 +33,9 @@ consistency_checks:
scheme: hqc-rmrs-192
implementation: avx2
files:
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- code.c
- fft.c
- reed_solomon.c
- source:
scheme: hqc-rmrs-256
implementation: clean
@ -58,7 +47,6 @@ consistency_checks:
- hqc.h
- parsing.h
- reed_muller.h
- reed_solomon.h
- vector.h
- code.c
- fft.c
@ -74,11 +62,6 @@ consistency_checks:
scheme: hqc-rmrs-256
implementation: avx2
files:
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- code.c
- fft.c
- reed_solomon.c

View File

@ -4,27 +4,16 @@ consistency_checks:
implementation: clean
files:
- api.h
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- reed_solomon.h
- code.c
- fft.c
- reed_solomon.c
- source:
scheme: hqc-rmrs-256
implementation: clean
files:
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- code.c
- fft.c
- reed_solomon.c
- source:
scheme: hqc-rmrs-256
implementation: avx2

View File

@ -4,15 +4,9 @@ consistency_checks:
implementation: avx2
files:
- api.h
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- reed_solomon.h
- code.c
- fft.c
- reed_solomon.c
- source:
scheme: hqc-rmrs-256
implementation: clean
@ -39,11 +33,6 @@ consistency_checks:
scheme: hqc-rmrs-256
implementation: avx2
files:
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- code.c
- fft.c
- reed_solomon.c

View File

@ -4,11 +4,6 @@ consistency_checks:
implementation: clean
files:
- api.h
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- code.c
- fft.c
- reed_solomon.c

View File

@ -4,11 +4,6 @@ consistency_checks:
implementation: avx2
files:
- api.h
- code.h
- fft.h
- gf.h
- hqc.h
- reed_muller.h
- code.c
- fft.c
- reed_solomon.c