77 lines
1.7 KiB
PHP
77 lines
1.7 KiB
PHP
<?php
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/**
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* DH Private Key
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*
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* @author Jim Wigginton <terrafrost@php.net>
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* @copyright 2015 Jim Wigginton
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @link http://phpseclib.sourceforge.net
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*/
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declare(strict_types=1);
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namespace phpseclib3\Crypt\DH;
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use phpseclib3\Crypt\Common;
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use phpseclib3\Crypt\DH;
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use phpseclib3\Math\BigInteger;
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/**
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* DH Private Key
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*
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* @author Jim Wigginton <terrafrost@php.net>
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*/
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final class PrivateKey extends DH
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{
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use Common\Traits\PasswordProtected;
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/**
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* Private Key
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*
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* @var BigInteger
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*/
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protected $privateKey;
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/**
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* Public Key
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*
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* @var BigInteger
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*/
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protected $publicKey;
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/**
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* Returns the public key
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*
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* @return DH\PublicKey
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*/
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public function getPublicKey(): PublicKey
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{
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$type = self::validatePlugin('Keys', 'PKCS8', 'savePublicKey');
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if (!isset($this->publicKey)) {
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$this->publicKey = $this->base->powMod($this->privateKey, $this->prime);
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}
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$key = $type::savePublicKey($this->prime, $this->base, $this->publicKey);
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return DH::loadFormat('PKCS8', $key);
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}
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/**
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* Returns the private key
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*
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* @param array $options optional
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*/
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public function toString(string $type, array $options = []): string
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{
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$type = self::validatePlugin('Keys', $type, 'savePrivateKey');
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if (!isset($this->publicKey)) {
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$this->publicKey = $this->base->powMod($this->privateKey, $this->prime);
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}
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return $type::savePrivateKey($this->prime, $this->base, $this->privateKey, $this->publicKey, $this->password, $options);
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}
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}
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