Fix overflowing multiplication in FrodoKEM AES
Tento commit je obsažen v:
rodič
7bac779bb5
revize
747908d35b
@ -110,10 +110,10 @@ int PQCLEAN_FRODOKEM1344AES_OPT_mul_add_sa_plus_e(uint16_t *out, const uint16_t
|
||||
uint16_t sum[PARAMS_PARALLEL] = {0};
|
||||
for (j = 0; j < PARAMS_N; j++) { // Matrix-vector multiplication
|
||||
uint16_t sp = s[i * PARAMS_N + j];
|
||||
sum[0] += sp * a_cols_t[(k + 0) * PARAMS_N + j];
|
||||
sum[1] += sp * a_cols_t[(k + 1) * PARAMS_N + j];
|
||||
sum[2] += sp * a_cols_t[(k + 2) * PARAMS_N + j];
|
||||
sum[3] += sp * a_cols_t[(k + 3) * PARAMS_N + j];
|
||||
sum[0] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 0) * PARAMS_N + j]);
|
||||
sum[1] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 1) * PARAMS_N + j]);
|
||||
sum[2] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 2) * PARAMS_N + j]);
|
||||
sum[3] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 3) * PARAMS_N + j]);
|
||||
}
|
||||
out[i * PARAMS_N + kk + k + 0] += sum[0];
|
||||
out[i * PARAMS_N + kk + k + 2] += sum[2];
|
||||
|
@ -80,7 +80,7 @@ int PQCLEAN_FRODOKEM640AES_OPT_mul_add_sa_plus_e(uint16_t *out, const uint16_t *
|
||||
*((uint32_t *)&out[i]) = *((uint32_t *)&e[i]);
|
||||
}
|
||||
|
||||
int k;
|
||||
size_t k;
|
||||
uint16_t a_cols[PARAMS_N * PARAMS_STRIPE_STEP] = {0};
|
||||
uint16_t a_cols_t[PARAMS_N * PARAMS_STRIPE_STEP];
|
||||
uint16_t a_cols_temp[PARAMS_N * PARAMS_STRIPE_STEP] = {0};
|
||||
@ -110,10 +110,10 @@ int PQCLEAN_FRODOKEM640AES_OPT_mul_add_sa_plus_e(uint16_t *out, const uint16_t *
|
||||
uint16_t sum[PARAMS_PARALLEL] = {0};
|
||||
for (j = 0; j < PARAMS_N; j++) { // Matrix-vector multiplication
|
||||
uint16_t sp = s[i * PARAMS_N + j];
|
||||
sum[0] += sp * a_cols_t[(k + 0) * PARAMS_N + j];
|
||||
sum[1] += sp * a_cols_t[(k + 1) * PARAMS_N + j];
|
||||
sum[2] += sp * a_cols_t[(k + 2) * PARAMS_N + j];
|
||||
sum[3] += sp * a_cols_t[(k + 3) * PARAMS_N + j];
|
||||
sum[0] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 0) * PARAMS_N + j]);
|
||||
sum[1] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 1) * PARAMS_N + j]);
|
||||
sum[2] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 2) * PARAMS_N + j]);
|
||||
sum[3] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 3) * PARAMS_N + j]);
|
||||
}
|
||||
out[i * PARAMS_N + kk + k + 0] += sum[0];
|
||||
out[i * PARAMS_N + kk + k + 2] += sum[2];
|
||||
|
@ -110,10 +110,10 @@ int PQCLEAN_FRODOKEM976AES_OPT_mul_add_sa_plus_e(uint16_t *out, const uint16_t *
|
||||
uint16_t sum[PARAMS_PARALLEL] = {0};
|
||||
for (j = 0; j < PARAMS_N; j++) { // Matrix-vector multiplication
|
||||
uint16_t sp = s[i * PARAMS_N + j];
|
||||
sum[0] += sp * a_cols_t[(k + 0) * PARAMS_N + j];
|
||||
sum[1] += sp * a_cols_t[(k + 1) * PARAMS_N + j];
|
||||
sum[2] += sp * a_cols_t[(k + 2) * PARAMS_N + j];
|
||||
sum[3] += sp * a_cols_t[(k + 3) * PARAMS_N + j];
|
||||
sum[0] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 0) * PARAMS_N + j]);
|
||||
sum[1] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 1) * PARAMS_N + j]);
|
||||
sum[2] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 2) * PARAMS_N + j]);
|
||||
sum[3] += (uint16_t)(sp * (uint32_t)a_cols_t[(k + 3) * PARAMS_N + j]);
|
||||
}
|
||||
out[i * PARAMS_N + kk + k + 0] += sum[0];
|
||||
out[i * PARAMS_N + kk + k + 2] += sum[2];
|
||||
|
Načítá se…
Odkázat v novém úkolu
Zablokovat Uživatele