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GMP
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DefaultEngine.php
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<?php /** * GMP Modular Exponentiation Engine * * PHP version 5 and 7 * * @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 * * @author Jim Wigginton <terrafrost@php.net> */ 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); } }