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