Update mbedtls_mpi_core_uint_le_mpi to new CT interface
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/library/bignum_core.c b/library/bignum_core.c
index 75806cf..c9008a1 100644
--- a/library/bignum_core.c
+++ b/library/bignum_core.c
@@ -148,24 +148,22 @@
/* Whether min <= A, in constant time.
* A_limbs must be at least 1. */
-unsigned mbedtls_mpi_core_uint_le_mpi(mbedtls_mpi_uint min,
- const mbedtls_mpi_uint *A,
- size_t A_limbs)
+mbedtls_ct_condition_t mbedtls_mpi_core_uint_le_mpi(mbedtls_mpi_uint min,
+ const mbedtls_mpi_uint *A,
+ size_t A_limbs)
{
/* min <= least significant limb? */
- unsigned min_le_lsl = 1 ^ mbedtls_ct_mpi_uint_lt(A[0], min);
+ mbedtls_ct_condition_t min_le_lsl = mbedtls_ct_bool_ge(A[0], min);
/* limbs other than the least significant one are all zero? */
- mbedtls_mpi_uint msll_mask = 0;
+ mbedtls_ct_condition_t msll_mask = MBEDTLS_CT_FALSE;
for (size_t i = 1; i < A_limbs; i++) {
- msll_mask |= A[i];
+ msll_mask = mbedtls_ct_bool_or(msll_mask, mbedtls_ct_bool(A[i]));
}
- /* The most significant limbs of A are not all zero iff msll_mask != 0. */
- unsigned msll_nonzero = mbedtls_ct_mpi_uint_mask(msll_mask) & 1;
/* min <= A iff the lowest limb of A is >= min or the other limbs
* are not all zero. */
- return min_le_lsl | msll_nonzero;
+ return mbedtls_ct_bool_or(msll_mask, min_le_lsl);
}
unsigned mbedtls_mpi_core_lt_ct(const mbedtls_mpi_uint *A,