38 lines
834 B
PHP
38 lines
834 B
PHP
<?php
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/**
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* GMP Modular Exponentiation Engine
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*
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* PHP version 5 and 7
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*
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* @author Jim Wigginton <terrafrost@php.net>
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* @copyright 2017 Jim Wigginton
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @link http://pear.php.net/package/Math_BigInteger
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*/
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declare(strict_types=1);
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namespace phpseclib3\Math\BigInteger\Engines\GMP;
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use phpseclib3\Math\BigInteger\Engines\GMP;
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/**
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* GMP Modular Exponentiation Engine
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*
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* @author Jim Wigginton <terrafrost@php.net>
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*/
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abstract class DefaultEngine extends GMP
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{
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/**
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* Performs modular exponentiation.
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*/
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protected static function powModHelper(GMP $x, GMP $e, GMP $n): GMP
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{
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$temp = new GMP();
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$temp->value = gmp_powm($x->value, $e->value, $n->value);
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return $x->normalize($temp);
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}
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}
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