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

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functions.
This commit is contained in:
Geoff Thorpe 2003-11-29 20:34:07 +00:00
parent 6859bb1a22
commit 657a919598
1 changed files with 7 additions and 2 deletions
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9
crypto/bn/bn_lib.c
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@ -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);
}