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55 lines
2.0 KiB
PHP
55 lines
2.0 KiB
PHP
<?php
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/************************************************************************
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* This file is part of EspoCRM.
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*
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* EspoCRM – Open Source CRM application.
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* Copyright (C) 2014-2026 EspoCRM, Inc.
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* Website: https://www.espocrm.com
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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* The interactive user interfaces in modified source and object code versions
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* of this program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU Affero General Public License version 3.
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*
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* In accordance with Section 7(b) of the GNU Affero General Public License version 3,
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* these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
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************************************************************************/
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namespace Espo\Core\Authentication\Oidc;
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class PkceUtil
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{
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private const string CHARACTERS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~';
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private const int CODE_LENGTH = 64;
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public static function generateCodeVerifier(): string
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{
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$output = '';
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for ($i = 0; $i < self::CODE_LENGTH; $i++) {
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$output .= self::CHARACTERS[random_int(0, strlen(self::CHARACTERS) - 1)];
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}
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return $output;
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}
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public static function hashAndEncodeCodeVerifier(string $codeVerifier): string
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{
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$code = hash('sha256', $codeVerifier, true);
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return rtrim(strtr(base64_encode($code), '+/', '-_'), '=');
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}
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}
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