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BCMath
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BuiltIn.php
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<?php /** * Built-In BCMath 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\BCMath; use phpseclib3\Math\BigInteger\Engines\BCMath; /** * Built-In BCMath Modular Exponentiation Engine * * @author Jim Wigginton <terrafrost@php.net> */ abstract class BuiltIn extends BCMath { /** * Performs modular exponentiation. * * @param BCMath $x * @param BCMath $e * @param BCMath $n * @return BCMath */ protected static function powModHelper(BCMath $x, BCMath $e, BCMath $n) { $temp = new BCMath(); $temp->value = bcpowmod($x->value, $e->value, $n->value); return $x->normalize($temp); } }