Commit 53b407da authored by Richard Levitte's avatar Richard Levitte
Browse files

Problem: bn_mul_normal() misbehaves if the size of b is 0. 

Solution: multiply a with 0, putting the result in r, and return.
parent 765e5311

crypto/bn/bn_mul.c

+7 −1
Original line number Diff line number Diff line
@@ -1110,6 +1110,12 @@ void bn_mul_normal(BN_ULONG *r, BN_ULONG *a, int na, BN_ULONG *b, int nb) 


		}

	rr= &(r[na]);

	if (nb <= 0)

		{

		(void)bn_mul_words(r,a,na,0);

		return;

		}

	else

		rr[0]=bn_mul_words(r,a,na,b[0]);



	for (;;)