Provide and use internal function mbedtls_zeroize_and_free()
Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
diff --git a/library/bignum_mod.c b/library/bignum_mod.c
index 84f3896..4d67829 100644
--- a/library/bignum_mod.c
+++ b/library/bignum_mod.c
@@ -80,9 +80,8 @@
switch (N->int_rep) {
case MBEDTLS_MPI_MOD_REP_MONTGOMERY:
if (N->rep.mont.rr != NULL) {
- mbedtls_platform_zeroize((mbedtls_mpi_uint *) N->rep.mont.rr,
+ mbedtls_zeroize_and_free((mbedtls_mpi_uint *) N->rep.mont.rr,
N->limbs * sizeof(mbedtls_mpi_uint));
- mbedtls_free((mbedtls_mpi_uint *) N->rep.mont.rr);
N->rep.mont.rr = NULL;
}
N->rep.mont.mm = 0;
@@ -295,9 +294,8 @@
break;
}
- mbedtls_platform_zeroize(working_memory,
+ mbedtls_zeroize_and_free(working_memory,
working_limbs * sizeof(mbedtls_mpi_uint));
- mbedtls_free(working_memory);
return ret;
}
@@ -399,8 +397,7 @@
if (N->int_rep == MBEDTLS_MPI_MOD_REP_MONTGOMERY &&
working_memory != NULL) {
- mbedtls_platform_zeroize(working_memory, working_memory_len);
- mbedtls_free(working_memory);
+ mbedtls_zeroize_and_free(working_memory, working_memory_len);
}
return ret;