public static int GetQbKey(Stream stream, bool NegateCrc, bool ReverseEndianness)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
if (!stream.CanRead)
{
throw new ArgumentException("stream is not readable.");
}
stream.Position = 0L;
KeyGenerator.ResetKey();
byte[] array = new byte[4096];
int int_;
while ((int_ = stream.Read(array, 0, array.Length)) != 0)
{
KeyGenerator.CrcVerifyMethod1(array, 0, int_);
}
stream.Position = 0L;
if (NegateCrc && ReverseEndianness)
{
return(KeyGenerator.ReverseEndianness((int)(KeyGenerator._key ^ 4294967295u)));
}
if (NegateCrc)
{
return((int)(KeyGenerator._key ^ 4294967295u));
}
if (ReverseEndianness)
{
return(KeyGenerator.ReverseEndianness((int)KeyGenerator._key));
}
return((int)KeyGenerator._key);
}