/**
*
* @param Object $order the order to be sent in a transaction request
* @param string $merchantId the identifier of merchant
* @param string $key authentication key
* @param string $algorithm the to use
* @throws IllegalArgumentException
* @return the signature built
*/
static function buildSignature($order, $merchantId, $key, $algorithm)
{
$message = SignatureUtil::buildMessage($order, $merchantId, $key);
if (SignatureUtil::MD5_ALGORITHM == $algorithm) {
return md5($message);
} else {
if (SignatureUtil::SHA_ALGORITHM == $algorithm) {
return sha1($message);
} else {
throw new InvalidArgumentException("Could not create signature. Invalid algoritm");
}
}
}
