Commit 657a9195 authored by Geoff Thorpe's avatar Geoff Thorpe
Browse files

This improves the placement of check_top() macros in a couple of bn_lib 

functions.
parent 6859bb1a

crypto/bn/bn_lib.c

+7 −2
Original line number Diff line number Diff line
@@ -579,6 +579,9 @@ void BN_swap(BIGNUM *a, BIGNUM *b) 
	BN_ULONG *tmp_d;

	int tmp_top, tmp_dmax, tmp_neg;

	

	bn_check_top(a);

	bn_check_top(b);



	flags_old_a = a->flags;

	flags_old_b = b->flags;
@@ -606,11 +609,11 @@ void BN_swap(BIGNUM *a, BIGNUM *b) 


void BN_clear(BIGNUM *a)

	{

	bn_check_top(a);

	if (a->d != NULL)

		memset(a->d,0,a->dmax*sizeof(a->d[0]));

	a->top=0;

	a->neg=0;

	bn_check_top(a);

	}



BN_ULONG BN_get_word(const BIGNUM *a)
@@ -637,6 +640,7 @@ BN_ULONG BN_get_word(const BIGNUM *a) 
int BN_set_word(BIGNUM *a, BN_ULONG w)

	{

	int i,n;

	bn_check_top(a);

	if (bn_expand(a,(int)sizeof(BN_ULONG)*8) == NULL) return(0);



	n=sizeof(BN_ULONG)/BN_BYTES;
@@ -670,6 +674,7 @@ BIGNUM *BN_bin2bn(const unsigned char *s, int len, BIGNUM *ret) 


	if (ret == NULL) ret=BN_new();

	if (ret == NULL) return(NULL);

	bn_check_top(ret);

	l=0;

	n=len;

	if (n == 0)
@@ -705,13 +710,13 @@ int BN_bn2bin(const BIGNUM *a, unsigned char *to) 
	int n,i;

	BN_ULONG l;



	bn_check_top(a);

	n=i=BN_num_bytes(a);

	while (i-- > 0)

		{

		l=a->d[i/BN_BYTES];

		*(to++)=(unsigned char)(l>>(8*(i%BN_BYTES)))&0xff;

		}

	bn_check_top(a);

	return(n);

	}