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<?php /** * DH Private Key * * @author Jim Wigginton <[email protected]> * @copyright 2015 Jim Wigginton * @license http://www.opensource.org/licenses/mit-license.html MIT License * @link http://phpseclib.sourceforge.net */ namespace phpseclib3\Crypt\DH; use phpseclib3\Crypt\Common; use phpseclib3\Crypt\DH; /** * DH Private Key * * @author Jim Wigginton <[email protected]> */ final class PrivateKey extends DH { use Common\Traits\PasswordProtected; /** * Private Key * * @var \phpseclib3\Math\BigInteger */ protected $privateKey; /** * Public Key * * @var \phpseclib3\Math\BigInteger */ protected $publicKey; /** * Returns the public key * * @return DH\PublicKey */ public function getPublicKey() { $type = self::validatePlugin('Keys', 'PKCS8', 'savePublicKey'); if (!isset($this->publicKey)) { $this->publicKey = $this->base->powMod($this->privateKey, $this->prime); } $key = $type::savePublicKey($this->prime, $this->base, $this->publicKey); return DH::loadFormat('PKCS8', $key); } /** * Returns the private key * * @param string $type * @param array $options optional * @return string */ public function toString($type, array $options = []) { $type = self::validatePlugin('Keys', $type, 'savePrivateKey'); if (!isset($this->publicKey)) { $this->publicKey = $this->base->powMod($this->privateKey, $this->prime); } return $type::savePrivateKey($this->prime, $this->base, $this->privateKey, $this->publicKey, $this->password, $options); } }