49 lines
1.7 KiB
PHP
49 lines
1.7 KiB
PHP
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<?php declare(strict_types=1);
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2020 (original work) Open Assessment Technologies SA;
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*/
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namespace oat\taoLti\models\classes\Security\Business\Service;
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use Exception;
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use oat\tao\model\service\InjectionAwareService;
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use oat\taoLti\models\classes\Security\Business\Contract\SecretKeyServiceInterface;
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use oat\taoLti\models\classes\Security\Business\Domain\Exception\SecretKeyGenerationException;
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final class SecretKeyService extends InjectionAwareService implements SecretKeyServiceInterface
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{
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/** @var int */
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private $length;
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/** @noinspection MagicMethodsValidityInspection */
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/** @noinspection PhpMissingParentConstructorInspection */
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public function __construct(int $length)
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{
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$this->length = $length;
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}
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public function generate(): string
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{
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try {
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return substr(bin2hex(random_bytes((int)ceil($this->length / 2))), 0, $this->length);
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} catch (Exception $exception) {
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throw SecretKeyGenerationException::create($exception);
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}
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}
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}
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