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Replace loop zeroise with memset

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Signed-off-by: Xiaokang Qian <xiaokang.qian@arm.com>
This commit is contained in:
Xiaokang Qian 2023-06-08 10:03:53 +00:00
parent 035e5fc885
commit fcdd0477b3
1 changed files with 2 additions and 3 deletions
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5
library/ecp_curves.c
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@ -5529,9 +5529,7 @@ int mbedtls_ecp_mod_p448(mbedtls_mpi_uint *X, size_t X_limbs)
memcpy(M, X + P448_WIDTH, ((M_limbs - 1) * ciL));
/* X = A0 */
for (i = P448_WIDTH; i < X_limbs; i++) {
X[i] = 0;
}
memset(X + P448_WIDTH, 0, ((M_limbs - 1) * ciL));
/* X = X + M = A0 + A1 */
/* Carry here fits in oversize X. Oversize M means it will get
@ -5558,6 +5556,7 @@ int mbedtls_ecp_mod_p448(mbedtls_mpi_uint *X, size_t X_limbs)
for (i = P224_WIDTH_MAX; i < M_limbs; ++i) {
M[i] = 0;
}
memset(M + P224_WIDTH_MAX, 0, ((M_limbs - P224_WIDTH_MAX) * ciL));
/* M = M + Q = B0 + B1 */
(void) mbedtls_mpi_core_add(M, M, Q, Q_limbs);