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qa-tool/htdocs/oidc/phpseclib/Crypt/DH/PrivateKey.php

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