/**
* @return JWT $this
*/
public function sign()
{
if (empty($this->key)) {
throw new \InvalidArgumentException('Secret key needs to be used.');
}
$headerData = array('typ' => 'JWT', 'alg' => $this->algorithm);
$jwtSegment[0] = $this->encoder->encodeData($headerData);
$jwtSegment[1] = $this->encoder->encodeData($this->payloadData);
$signature = $this->secureHash(implode('.', $jwtSegment));
$jwtSegment[2] = $this->encoder->encode($signature);
$this->jsonWebToken = implode('.', $jwtSegment);
$this->tokenValidated = true;
return $this;
}
