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ecp_curves: Reintroduced input checking for

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Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
This commit is contained in:
Minos Galanakis 2023-05-18 11:08:50 +01:00
parent 65c386ee3d
commit 31f0b452c7
1 changed files with 7 additions and 0 deletions
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7
library/ecp_curves.c
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@ -5431,6 +5431,13 @@ cleanup:
MBEDTLS_STATIC_TESTABLE MBEDTLS_STATIC_TESTABLE
int mbedtls_ecp_mod_p255_raw(mbedtls_mpi_uint *X, size_t X_Limbs) int mbedtls_ecp_mod_p255_raw(mbedtls_mpi_uint *X, size_t X_Limbs)
{ {
if (X_Limbs > 2*P255_WIDTH) {
X_Limbs = 2*P255_WIDTH;
} else if (X_Limbs < P255_WIDTH) {
return 0;
}
mbedtls_mpi_uint *carry = mbedtls_calloc(P255_WIDTH, ciL); mbedtls_mpi_uint *carry = mbedtls_calloc(P255_WIDTH, ciL);
if (carry == NULL) { if (carry == NULL) {
return MBEDTLS_ERR_ECP_ALLOC_FAILED; return MBEDTLS_ERR_ECP_ALLOC_FAILED;