Edit File: S256Verifier.php
<?php /** * @author Lukáš Unger <lookymsc@gmail.com> * @copyright Copyright (c) Lukáš Unger * @license http://mit-license.org/ * * @link https://github.com/thephpleague/oauth2-server */ namespace League\OAuth2\Server\CodeChallengeVerifiers; class S256Verifier implements CodeChallengeVerifierInterface { /** * Return code challenge method. * * @return string */ public function getMethod() { return 'S256'; } /** * Verify the code challenge. * * @param string $codeVerifier * @param string $codeChallenge * * @return bool */ public function verifyCodeChallenge($codeVerifier, $codeChallenge) { return \hash_equals( \strtr(\rtrim(\base64_encode(\hash('sha256', $codeVerifier, true)), '='), '+/', '-_'), $codeChallenge ); } }
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