/**
* Prepare data to be sent
*
* @param org.nagios.nsca.NscaMessage message
* @return string
*/
public function prepare(NscaMessage $message)
{
// Calculate CRC32 checksum, then build the final packet with the sig
// and encrypt it using defined crypt method
return $this->encrypt($this->pack(CRC32::fromString($this->pack(0, $message))->asInt32(), $message));
}
/**
* Returns a checksum for a given input string
*
* @param string data
* @return security.checksum.Checksum
*/
protected function checksumOf($data)
{
return CRC32::fromString($data)->getValue();
}
/**
* Create a new checksum from a file object
*
* @param io.File file
* @return security.checksum.CRC32
*/
public static function fromFile($file)
{
return CRC32::fromString(FileUtil::getContents($file));
}