DefaultEngine.php — JetBackup – Backup, Restore & Migrate 3.1.23.3

backup / src / JetBackup / 3rdparty / phpseclib3 / Math / BigInteger / Engines / GMP / DefaultEngine.php

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DefaultEngine.php

38 lines

1	<?php
2
3	/**
4	* GMP Modular Exponentiation Engine
5	*
6	* PHP version 5 and 7
7	*
8	* @author Jim Wigginton <terrafrost@php.net>
9	* @copyright 2017 Jim Wigginton
10	* @license http://www.opensource.org/licenses/mit-license.html MIT License
11	* @link http://pear.php.net/package/Math_BigInteger
12	*/
13
14	declare(strict_types=1);
15
16	namespace phpseclib3\Math\BigInteger\Engines\GMP;
17
18	use phpseclib3\Math\BigInteger\Engines\GMP;
19
20	/**
21	* GMP Modular Exponentiation Engine
22	*
23	* @author Jim Wigginton <terrafrost@php.net>
24	*/
25	abstract class DefaultEngine extends GMP
26	{
27	/**
28	* Performs modular exponentiation.
29	*/
30	protected static function powModHelper(GMP $x, GMP $e, GMP $n): GMP
31	{
32	$temp = new GMP();
33	$temp->value = gmp_powm($x->value, $e->value, $n->value);
34
35	return $x->normalize($temp);
36	}
37	}
38