Commit 18f62d4b authored by Geoff Thorpe's avatar Geoff Thorpe
Browse files

Add debug-screening of input parameters to some functions I'd missed 

before.
parent 5c0c2280

crypto/bn/bn_shift.c

+12 −0
Original line number Diff line number Diff line
@@ -65,6 +65,9 @@ int BN_lshift1(BIGNUM *r, const BIGNUM *a) 
	register BN_ULONG *ap,*rp,t,c;

	int i;



	bn_check_top(r);

	bn_check_top(a);



	if (r != a)

		{

		r->neg=a->neg;
@@ -98,6 +101,9 @@ int BN_rshift1(BIGNUM *r, const BIGNUM *a) 
	BN_ULONG *ap,*rp,t,c;

	int i;



	bn_check_top(r);

	bn_check_top(a);



	if (BN_is_zero(a))

		{

		BN_zero(r);
@@ -129,6 +135,9 @@ int BN_lshift(BIGNUM *r, const BIGNUM *a, int n) 
	BN_ULONG *t,*f;

	BN_ULONG l;



	bn_check_top(r);

	bn_check_top(a);



	r->neg=a->neg;

	nw=n/BN_BITS2;

	if (bn_wexpand(r,a->top+nw+1) == NULL) return(0);
@@ -162,6 +171,9 @@ int BN_rshift(BIGNUM *r, const BIGNUM *a, int n) 
	BN_ULONG *t,*f;

	BN_ULONG l,tmp;



	bn_check_top(r);

	bn_check_top(a);



	nw=n/BN_BITS2;

	rb=n%BN_BITS2;

	lb=BN_BITS2-rb;