/**
* Convert to compact serialization.
*
* @return string
*/
public function toCompact()
{
return Base64::urlEncode($this->_protectedHeader->toJSON()) . "." . Base64::urlEncode($this->_encryptedKey) . "." . Base64::urlEncode($this->_iv) . "." . Base64::urlEncode($this->_ciphertext) . "." . Base64::urlEncode($this->_authenticationTag);
}
/**
* Initialize from native value.
*
* Value shall be encoded using Base64url encoding.
*
* @param string $value
* @return self
*/
public static function fromString($value)
{
return new static(Base64::urlEncode($value));
}
/**
* Generate input for the signature computation.
*
* @param string $payload Payload
* @param Header $header Protected header
* @return string
*/
protected static function _generateSignatureInput($payload, Header $header)
{
$b64 = $header->hasB64Payload() ? $header->B64Payload()->value() : true;
$data = Base64::urlEncode($header->toJSON()) . ".";
$data .= $b64 ? Base64::urlEncode($payload) : $payload;
return $data;
}
