From: Ulf Möller <ulf@openssl.org>
Date: Sat, 15 Nov 2003 08:37:50 +0000 (+0000)
Subject: BN_set_bit() etc should use "unsigned int".
X-Git-Tag: BEN_FIPS_TEST_4^2~11^2~22
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1a0173304755bd44662a201734f80eca3afe8a9c;p=thirdparty%2Fopenssl.git

BN_set_bit() etc should use "unsigned int".
Keep it as is to avoid an API change, but check for negativ values.

Submitted by: Nils Larsch
---

diff --git a/crypto/bn/bn_lib.c b/crypto/bn/bn_lib.c
index 1f45b09d080..43c336f5260 100644
--- a/crypto/bn/bn_lib.c
+++ b/crypto/bn/bn_lib.c
@@ -782,6 +782,9 @@ int BN_set_bit(BIGNUM *a, int n)
 	{
 	int i,j,k;
 
+	if (n < 0)
+		return 0;
+
 	i=n/BN_BITS2;
 	j=n%BN_BITS2;
 	if (a->top <= i)
@@ -801,6 +804,9 @@ int BN_clear_bit(BIGNUM *a, int n)
 	{
 	int i,j;
 
+	if (n < 0)
+		return 0;
+
 	i=n/BN_BITS2;
 	j=n%BN_BITS2;
 	if (a->top <= i) return(0);
@@ -825,6 +831,9 @@ int BN_mask_bits(BIGNUM *a, int n)
 	{
 	int b,w;
 
+	if (n < 0)
+		return 0;
+
 	w=n/BN_BITS2;
 	b=n%BN_BITS2;
 	if (w >= a->top) return(0);