Commit 1b068044 authored by Geoff Thorpe's avatar Geoff Thorpe
Browse files

When adding positive elements, we can use BN_uadd() instead of BN_add(). 

Submitted by: Nils Larsch
Reviewed by: Geoff Thorpe
parent dc90f64d

crypto/bn/bn_mod.c

+1 −1
Original line number Diff line number Diff line
@@ -149,7 +149,7 @@ int BN_mod_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m, BN_ 
 * and less than  m */

int BN_mod_add_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m)

	{

	if (!BN_add(r, a, b)) return 0;

	if (!BN_uadd(r, a, b)) return 0;

	if (BN_ucmp(r, m) >= 0)

		return BN_usub(r, r, m);

	return 1;