reactos/lib/cmlib/hivesum.c
Cameron Gutman 2b82fe44ea [WLAN-BRINGUP]
- Create a branch to drop my ndisuio work

svn path=/branches/wlan-bringup/; revision=54809
2012-01-02 20:53:24 +00:00

32 lines
620 B
C

/*
* PROJECT: registry manipulation library
* LICENSE: GPL - See COPYING in the top level directory
* COPYRIGHT: Copyright 2005 Filip Navara <navaraf@reactos.org>
* Copyright 2001 - 2005 Eric Kohl
*/
#include "cmlib.h"
/**
* @name HvpHiveHeaderChecksum
*
* Compute checksum of hive header and return it.
*/
ULONG CMAPI
HvpHiveHeaderChecksum(
PHBASE_BLOCK HiveHeader)
{
PULONG Buffer = (PULONG)HiveHeader;
ULONG Sum = 0;
ULONG i;
for (i = 0; i < 127; i++)
Sum ^= Buffer[i];
if (Sum == (ULONG)-1)
Sum = (ULONG)-2;
if (Sum == 0)
Sum = 1;
return Sum;
}