/**
* Convert JWK to PEM.
*
* @return PEM PUBLIC KEY
*/
public function toPEM()
{
$n = $this->modulusParameter()->number()->base10();
$e = $this->exponentParameter()->number()->base10();
$pk = new RSAPublicKey($n, $e);
$pki = new PublicKeyInfo(new RSAEncryptionAlgorithmIdentifier(), $pk->toDER());
return $pki->toPEM();
}
