36 lines
848 B
PHP
36 lines
848 B
PHP
<?php
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declare(strict_types=1);
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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2014-2018 Spomky-Labs
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*
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* This software may be modified and distributed under the terms
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* of the MIT license. See the LICENSE file for details.
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*/
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namespace Jose\Component\Core\Util\Ecc;
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/**
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* @internal
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*/
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class ModularArithmetic
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{
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public static function sub(\GMP $minuend, \GMP $subtrahend, \GMP $modulus): \GMP
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{
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return Math::mod(Math::sub($minuend, $subtrahend), $modulus);
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}
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public static function mul(\GMP $multiplier, \GMP $muliplicand, \GMP $modulus): \GMP
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{
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return Math::mod(Math::mul($multiplier, $muliplicand), $modulus);
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}
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public static function div(\GMP $dividend, \GMP $divisor, \GMP $modulus): \GMP
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{
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return self::mul($dividend, Math::inverseMod($divisor, $modulus), $modulus);
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}
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}
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