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<?php
namespace Firebase\JWT;
use InvalidArgumentException;
use OpenSSLAsymmetricKey;
use OpenSSLCertificate;
use TypeError;
class Key
{
/** @var string|resource|OpenSSLAsymmetricKey|OpenSSLCertificate */
private $keyMaterial;
/** @var string */
private $algorithm;
/**
* @param string|resource|OpenSSLAsymmetricKey|OpenSSLCertificate $keyMaterial
* @param string $algorithm
*/
public function __construct(
$keyMaterial,
string $algorithm
) {
if (
!\is_string($keyMaterial)
&& !$keyMaterial instanceof OpenSSLAsymmetricKey
&& !$keyMaterial instanceof OpenSSLCertificate
&& !\is_resource($keyMaterial)
) {
throw new TypeError('Key material must be a string, resource, or OpenSSLAsymmetricKey');
}
if (empty($keyMaterial)) {
throw new InvalidArgumentException('Key material must not be empty');
}
if (empty($algorithm)) {
throw new InvalidArgumentException('Algorithm must not be empty');
}
// TODO: Remove in PHP 8.0 in favor of class constructor property promotion
$this->keyMaterial = $keyMaterial;
$this->algorithm = $algorithm;
}
/**
* Return the algorithm valid for this key
*
* @return string
*/
public function getAlgorithm(): string
{
return $this->algorithm;
}
/**
* @return string|resource|OpenSSLAsymmetricKey|OpenSSLCertificate
*/
public function getKeyMaterial()
{
return $this->keyMaterial;
}
}