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qa-tool/htdocs/oidc/phpseclib/Crypt/PublicKeyLoader.php

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+<?php
+
+/**
+ * PublicKeyLoader
+ *
+ * Returns a PublicKey or PrivateKey object.
+ *
+ * @author    Jim Wigginton <terrafrost@php.net>
+ * @copyright 2009 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;
+
+use phpseclib3\Crypt\Common\AsymmetricKey;
+use phpseclib3\Crypt\Common\PrivateKey;
+use phpseclib3\Crypt\Common\PublicKey;
+use phpseclib3\Exception\NoKeyLoadedException;
+use phpseclib3\File\X509;
+
+/**
+ * PublicKeyLoader
+ *
+ * @author  Jim Wigginton <terrafrost@php.net>
+ */
+abstract class PublicKeyLoader
+{
+    /**
+     * Loads a public or private key
+     *
+     * @param string|array $key
+     */
+    public static function load($key, ?string $password = null): AsymmetricKey
+    {
+        try {
+            return EC::load($key, $password);
+        } catch (NoKeyLoadedException $e) {
+        }
+
+        try {
+            return RSA::load($key, $password);
+        } catch (NoKeyLoadedException $e) {
+        }
+
+        try {
+            return DSA::load($key, $password);
+        } catch (NoKeyLoadedException $e) {
+        }
+
+        try {
+            $x509 = new X509();
+            $x509->loadX509($key);
+            $key = $x509->getPublicKey();
+            if ($key) {
+                return $key;
+            }
+        } catch (\Exception $e) {
+        }
+
+        throw new NoKeyLoadedException('Unable to read key');
+    }
+
+    /**
+     * Loads a private key
+     *
+     * @param string|array $key
+     */
+    public static function loadPrivateKey($key, ?string $password = null): PrivateKey
+    {
+        $key = self::load($key, $password);
+        if (!$key instanceof PrivateKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a private key');
+        }
+        return $key;
+    }
+
+    /**
+     * Loads a public key
+     *
+     * @param string|array $key
+     */
+    public static function loadPublicKey($key): PublicKey
+    {
+        $key = self::load($key);
+        if (!$key instanceof PublicKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a public key');
+        }
+        return $key;
+    }
+
+    /**
+     * Loads parameters
+     *
+     * @param string|array $key
+     */
+    public static function loadParameters($key): AsymmetricKey
+    {
+        $key = self::load($key);
+        if (!$key instanceof PrivateKey && !$key instanceof PublicKey) {
+            throw new NoKeyLoadedException('The key that was loaded was not a parameter');
+        }
+        return $key;
+    }
+}