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Fix limb size calculation

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Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
This commit is contained in:
Gabor Mezei 2023-02-14 18:18:37 +01:00
parent e14b5bdba7
commit aef0f2de9f
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GPG Key ID: F072ACA227ACD71D
1 changed files with 2 additions and 2 deletions
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4
library/ecp_curves.c
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@ -5051,7 +5051,7 @@ static inline int8_t extract_carry(int64_t cur)
static int ecp_mod_p224(mbedtls_mpi *N) static int ecp_mod_p224(mbedtls_mpi *N)
{ {
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
size_t expected_width = 2 * ((224 + biL - 1) / biL); size_t expected_width = 2 * 224 / biL;
MBEDTLS_MPI_CHK(mbedtls_mpi_grow(N, expected_width)); MBEDTLS_MPI_CHK(mbedtls_mpi_grow(N, expected_width));
ret = ecp_mod_p224_raw(N->p, expected_width); ret = ecp_mod_p224_raw(N->p, expected_width);
cleanup: cleanup:
@ -5061,7 +5061,7 @@ cleanup:
MBEDTLS_STATIC_TESTABLE MBEDTLS_STATIC_TESTABLE
int ecp_mod_p224_raw(mbedtls_mpi_uint *Np, size_t Nn) int ecp_mod_p224_raw(mbedtls_mpi_uint *Np, size_t Nn)
{ {
if (Nn != 2 * ((224 + biL - 1) / biL)) { if (Nn != 2 * 224 / biL) {
return MBEDTLS_ERR_ECP_BAD_INPUT_DATA; return MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
} }