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serialize error before hashing

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This commit is contained in:
Leon Botros 2019-08-23 12:57:17 +02:00
parent 46145a3183
commit 50665606f0
3 changed files with 33 additions and 27 deletions
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20
crypto_kem/ledakemlt12/leaktime/kem.c
View File

@ -6,6 +6,10 @@
#include <string.h>
#define pack_ct(sk_bytes, ct) PQCLEAN_LEDAKEMLT12_LEAKTIME_gf2x_tobytes(sk_bytes, ct);
#define unpack_ct(ct, ct_bytes) PQCLEAN_LEDAKEMLT12_LEAKTIME_gf2x_frombytes(ct, ct_bytes)
static void pack_pk(uint8_t *pk_bytes, publicKeyNiederreiter_t *pk) {
for (size_t i = 0; i < N0 - 1; i++) {
PQCLEAN_LEDAKEMLT12_LEAKTIME_gf2x_tobytes(pk_bytes + i * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B,
@ -20,17 +24,13 @@ static void unpack_pk(publicKeyNiederreiter_t *pk, const uint8_t *pk_bytes) {
}
}
#define pack_ct(sk_bytes, ct) PQCLEAN_LEDAKEMLT12_LEAKTIME_gf2x_tobytes(sk_bytes, ct);
#define unpack_ct(ct, ct_bytes) PQCLEAN_LEDAKEMLT12_LEAKTIME_gf2x_frombytes(ct, ct_bytes)
/*
static void pack_error(uint8_t *error_bytes, DIGIT *error_digits) {
size_t i;
for (i = 0; i < N0; i++) {
PQCLEAN_LEDAKEMLT12_LEAKTIME_gf2x_tobytes(error_bytes + i * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B,
error_digits + i * NUM_DIGITS_GF2X_ELEMENT);
}
}*/
}
/* IND-CCA2 Keygen */
int PQCLEAN_LEDAKEMLT12_LEAKTIME_crypto_kem_keypair(uint8_t *pk, uint8_t *sk) {
@ -50,6 +50,7 @@ int PQCLEAN_LEDAKEMLT12_LEAKTIME_crypto_kem_enc(uint8_t *ct, uint8_t *ss, const
AES_XOF_struct hashedAndTruncatedSeed_expander;
POSITION_T errorPos[NUM_ERRORS_T];
DIGIT error_vector[N0 * NUM_DIGITS_GF2X_ELEMENT];
uint8_t error_bytes[N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B];
uint8_t seed[TRNG_BYTE_LENGTH];
uint8_t ss_input[2 * TRNG_BYTE_LENGTH] = {0};
uint8_t hashedSeed[HASH_BYTE_LENGTH];
@ -73,7 +74,8 @@ int PQCLEAN_LEDAKEMLT12_LEAKTIME_crypto_kem_enc(uint8_t *ct, uint8_t *ss, const
PQCLEAN_LEDAKEMLT12_LEAKTIME_rand_error_pos(errorPos, &hashedAndTruncatedSeed_expander);
PQCLEAN_LEDAKEMLT12_LEAKTIME_expand_error(error_vector, errorPos);
HASH_FUNCTION(hashedErrorVector, (const uint8_t *) error_vector, (N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B));
pack_error(error_bytes, error_vector);
HASH_FUNCTION(hashedErrorVector, error_bytes, (N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B));
memcpy(hashedAndTruncatedErrorVector, hashedErrorVector, TRNG_BYTE_LENGTH);
@ -98,6 +100,7 @@ int PQCLEAN_LEDAKEMLT12_LEAKTIME_crypto_kem_dec(uint8_t *ss, const uint8_t *ct,
POSITION_T reconstructed_errorPos[NUM_ERRORS_T];
DIGIT reconstructed_error_vector[N0 * NUM_DIGITS_GF2X_ELEMENT];
DIGIT decoded_error_vector[N0 * NUM_DIGITS_GF2X_ELEMENT];
uint8_t decoded_error_bytes[N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B];
uint8_t hashedErrorVector[HASH_BYTE_LENGTH];
uint8_t hashedAndTruncatedErrorVector[TRNG_BYTE_LENGTH] = {0};
uint8_t decoded_seed[TRNG_BYTE_LENGTH];
@ -110,9 +113,8 @@ int PQCLEAN_LEDAKEMLT12_LEAKTIME_crypto_kem_dec(uint8_t *ss, const uint8_t *ct,
int decode_ok = PQCLEAN_LEDAKEMLT12_LEAKTIME_niederreiter_decrypt(decoded_error_vector,
(const privateKeyNiederreiter_t *)sk, syndrome);
HASH_FUNCTION(hashedErrorVector,
(const uint8_t *) decoded_error_vector,
(N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B));
pack_error(decoded_error_bytes, decoded_error_vector);
HASH_FUNCTION(hashedErrorVector, decoded_error_bytes, N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B);
memcpy(hashedAndTruncatedErrorVector, hashedErrorVector, TRNG_BYTE_LENGTH);

20
crypto_kem/ledakemlt32/leaktime/kem.c
View File

@ -6,6 +6,10 @@
#include <string.h>
#define pack_ct(sk_bytes, ct) PQCLEAN_LEDAKEMLT32_LEAKTIME_gf2x_tobytes(sk_bytes, ct);
#define unpack_ct(ct, ct_bytes) PQCLEAN_LEDAKEMLT32_LEAKTIME_gf2x_frombytes(ct, ct_bytes)
static void pack_pk(uint8_t *pk_bytes, publicKeyNiederreiter_t *pk) {
for (size_t i = 0; i < N0 - 1; i++) {
PQCLEAN_LEDAKEMLT32_LEAKTIME_gf2x_tobytes(pk_bytes + i * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B,
@ -20,17 +24,13 @@ static void unpack_pk(publicKeyNiederreiter_t *pk, const uint8_t *pk_bytes) {
}
}
#define pack_ct(sk_bytes, ct) PQCLEAN_LEDAKEMLT32_LEAKTIME_gf2x_tobytes(sk_bytes, ct);
#define unpack_ct(ct, ct_bytes) PQCLEAN_LEDAKEMLT32_LEAKTIME_gf2x_frombytes(ct, ct_bytes)
/*
static void pack_error(uint8_t *error_bytes, DIGIT *error_digits) {
size_t i;
for (i = 0; i < N0; i++) {
PQCLEAN_LEDAKEMLT32_LEAKTIME_gf2x_tobytes(error_bytes + i * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B,
error_digits + i * NUM_DIGITS_GF2X_ELEMENT);
}
}*/
}
/* IND-CCA2 Keygen */
int PQCLEAN_LEDAKEMLT32_LEAKTIME_crypto_kem_keypair(uint8_t *pk, uint8_t *sk) {
@ -50,6 +50,7 @@ int PQCLEAN_LEDAKEMLT32_LEAKTIME_crypto_kem_enc(uint8_t *ct, uint8_t *ss, const
AES_XOF_struct hashedAndTruncatedSeed_expander;
POSITION_T errorPos[NUM_ERRORS_T];
DIGIT error_vector[N0 * NUM_DIGITS_GF2X_ELEMENT];
uint8_t error_bytes[N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B];
uint8_t seed[TRNG_BYTE_LENGTH];
uint8_t ss_input[2 * TRNG_BYTE_LENGTH] = {0};
uint8_t hashedSeed[HASH_BYTE_LENGTH];
@ -73,7 +74,8 @@ int PQCLEAN_LEDAKEMLT32_LEAKTIME_crypto_kem_enc(uint8_t *ct, uint8_t *ss, const
PQCLEAN_LEDAKEMLT32_LEAKTIME_rand_error_pos(errorPos, &hashedAndTruncatedSeed_expander);
PQCLEAN_LEDAKEMLT32_LEAKTIME_expand_error(error_vector, errorPos);
HASH_FUNCTION(hashedErrorVector, (const uint8_t *) error_vector, (N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B));
pack_error(error_bytes, error_vector);
HASH_FUNCTION(hashedErrorVector, error_bytes, (N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B));
memcpy(hashedAndTruncatedErrorVector, hashedErrorVector, TRNG_BYTE_LENGTH);
@ -98,6 +100,7 @@ int PQCLEAN_LEDAKEMLT32_LEAKTIME_crypto_kem_dec(uint8_t *ss, const uint8_t *ct,
POSITION_T reconstructed_errorPos[NUM_ERRORS_T];
DIGIT reconstructed_error_vector[N0 * NUM_DIGITS_GF2X_ELEMENT];
DIGIT decoded_error_vector[N0 * NUM_DIGITS_GF2X_ELEMENT];
uint8_t decoded_error_bytes[N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B];
uint8_t hashedErrorVector[HASH_BYTE_LENGTH];
uint8_t hashedAndTruncatedErrorVector[TRNG_BYTE_LENGTH] = {0};
uint8_t decoded_seed[TRNG_BYTE_LENGTH];
@ -110,9 +113,8 @@ int PQCLEAN_LEDAKEMLT32_LEAKTIME_crypto_kem_dec(uint8_t *ss, const uint8_t *ct,
int decode_ok = PQCLEAN_LEDAKEMLT32_LEAKTIME_niederreiter_decrypt(decoded_error_vector,
(const privateKeyNiederreiter_t *)sk, syndrome);
HASH_FUNCTION(hashedErrorVector,
(const uint8_t *) decoded_error_vector,
(N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B));
pack_error(decoded_error_bytes, decoded_error_vector);
HASH_FUNCTION(hashedErrorVector, decoded_error_bytes, N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B);
memcpy(hashedAndTruncatedErrorVector, hashedErrorVector, TRNG_BYTE_LENGTH);

20
crypto_kem/ledakemlt52/leaktime/kem.c
View File

@ -6,6 +6,10 @@
#include <string.h>
#define pack_ct(sk_bytes, ct) PQCLEAN_LEDAKEMLT52_LEAKTIME_gf2x_tobytes(sk_bytes, ct);
#define unpack_ct(ct, ct_bytes) PQCLEAN_LEDAKEMLT52_LEAKTIME_gf2x_frombytes(ct, ct_bytes)
static void pack_pk(uint8_t *pk_bytes, publicKeyNiederreiter_t *pk) {
for (size_t i = 0; i < N0 - 1; i++) {
PQCLEAN_LEDAKEMLT52_LEAKTIME_gf2x_tobytes(pk_bytes + i * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B,
@ -20,17 +24,13 @@ static void unpack_pk(publicKeyNiederreiter_t *pk, const uint8_t *pk_bytes) {
}
}
#define pack_ct(sk_bytes, ct) PQCLEAN_LEDAKEMLT52_LEAKTIME_gf2x_tobytes(sk_bytes, ct);
#define unpack_ct(ct, ct_bytes) PQCLEAN_LEDAKEMLT52_LEAKTIME_gf2x_frombytes(ct, ct_bytes)
/*
static void pack_error(uint8_t *error_bytes, DIGIT *error_digits) {
size_t i;
for (i = 0; i < N0; i++) {
PQCLEAN_LEDAKEMLT52_LEAKTIME_gf2x_tobytes(error_bytes + i * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B,
error_digits + i * NUM_DIGITS_GF2X_ELEMENT);
}
}*/
}
/* IND-CCA2 Keygen */
int PQCLEAN_LEDAKEMLT52_LEAKTIME_crypto_kem_keypair(uint8_t *pk, uint8_t *sk) {
@ -50,6 +50,7 @@ int PQCLEAN_LEDAKEMLT52_LEAKTIME_crypto_kem_enc(uint8_t *ct, uint8_t *ss, const
AES_XOF_struct hashedAndTruncatedSeed_expander;
POSITION_T errorPos[NUM_ERRORS_T];
DIGIT error_vector[N0 * NUM_DIGITS_GF2X_ELEMENT];
uint8_t error_bytes[N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B];
uint8_t seed[TRNG_BYTE_LENGTH];
uint8_t ss_input[2 * TRNG_BYTE_LENGTH] = {0};
uint8_t hashedSeed[HASH_BYTE_LENGTH];
@ -73,7 +74,8 @@ int PQCLEAN_LEDAKEMLT52_LEAKTIME_crypto_kem_enc(uint8_t *ct, uint8_t *ss, const
PQCLEAN_LEDAKEMLT52_LEAKTIME_rand_error_pos(errorPos, &hashedAndTruncatedSeed_expander);
PQCLEAN_LEDAKEMLT52_LEAKTIME_expand_error(error_vector, errorPos);
HASH_FUNCTION(hashedErrorVector, (const uint8_t *) error_vector, (N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B));
pack_error(error_bytes, error_vector);
HASH_FUNCTION(hashedErrorVector, error_bytes, (N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B));
memcpy(hashedAndTruncatedErrorVector, hashedErrorVector, TRNG_BYTE_LENGTH);
@ -98,6 +100,7 @@ int PQCLEAN_LEDAKEMLT52_LEAKTIME_crypto_kem_dec(uint8_t *ss, const uint8_t *ct,
POSITION_T reconstructed_errorPos[NUM_ERRORS_T];
DIGIT reconstructed_error_vector[N0 * NUM_DIGITS_GF2X_ELEMENT];
DIGIT decoded_error_vector[N0 * NUM_DIGITS_GF2X_ELEMENT];
uint8_t decoded_error_bytes[N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B];
uint8_t hashedErrorVector[HASH_BYTE_LENGTH];
uint8_t hashedAndTruncatedErrorVector[TRNG_BYTE_LENGTH] = {0};
uint8_t decoded_seed[TRNG_BYTE_LENGTH];
@ -110,9 +113,8 @@ int PQCLEAN_LEDAKEMLT52_LEAKTIME_crypto_kem_dec(uint8_t *ss, const uint8_t *ct,
int decode_ok = PQCLEAN_LEDAKEMLT52_LEAKTIME_niederreiter_decrypt(decoded_error_vector,
(const privateKeyNiederreiter_t *)sk, syndrome);
HASH_FUNCTION(hashedErrorVector,
(const uint8_t *) decoded_error_vector,
(N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B));
pack_error(decoded_error_bytes, decoded_error_vector);
HASH_FUNCTION(hashedErrorVector, decoded_error_bytes, N0 * NUM_DIGITS_GF2X_ELEMENT * DIGIT_SIZE_B);
memcpy(hashedAndTruncatedErrorVector, hashedErrorVector, TRNG_BYTE_LENGTH);