/**
* Calculates hash
* @param IInput $input
* @return string
*
* @throws \Drahak\Restful\InvalidStateException
*/
public function calculate(IInput $input)
{
if (!$this->privateKey) {
throw new InvalidStateException('Private key is not set');
}
$dataString = $this->mapper->stringify($input->getData());
return hash_hmac(self::HASH, $dataString, $this->privateKey);
}
/**
* Authenticate request timeout
* @param IInput $input
* @return bool
*
* @throws RequestTimeoutException
*/
public function authenticate(IInput $input)
{
$timestamp = time();
$data = $input->getData();
if (!isset($data[$this->requestTimeKey]) || !$data[$this->requestTimeKey]) {
throw new RequestTimeoutException('Request time not found in requested data.');
}
$diff = $timestamp - $data[$this->requestTimeKey];
if ($diff > $this->timeout) {
throw new RequestTimeoutException('Request timeout');
}
return TRUE;
}
