Commit 69b5d3c5 authored by Ben Laurie's avatar Ben Laurie
Browse files

Don't let top go below zero!

parent 2bfb4dbc

crypto/bn/bn_mont.c

+1 −1
Original line number Diff line number Diff line
@@ -90,7 +90,7 @@ int BN_mod_mul_montgomery(BIGNUM *r, BIGNUM *a, BIGNUM *b, 
		bn_wexpand(tmp2,a->top*4);

		bn_sqr_recursive(tmp->d,a->d,a->top,tmp2->d);

		tmp->top=a->top*2;

		if (tmp->d[tmp->top-1] == 0)

		if (tmp->top > 0 && tmp->d[tmp->top-1] == 0)

			tmp->top--;

#else

		if (!BN_sqr(tmp,a,ctx)) goto err;