# defender-security/6.2.2/lib/packages/Webauthn/Counter/ThrowExceptionIfInvalid.php

Defender Security – Malware Scanner, Login Security & Firewall, version 6.2.2. 47 lines.

- Page: https://pluginprobe.com/plugins/defender-security/6.2.2/code/lib/packages/Webauthn/Counter/ThrowExceptionIfInvalid.php
- Raw: https://pluginprobe.com/plugins/defender-security/6.2.2/raw/lib/packages/Webauthn/Counter/ThrowExceptionIfInvalid.php
- Modified: 2026-08-24T08:19:12+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/defender-security/6.2.2/code/lib/packages/Webauthn/Counter/ThrowExceptionIfInvalid.php#L10-L20`.

```php
<?php

declare(strict_types=1);

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2021 Spomky-Labs
 *
 * This software may be modified and distributed under the terms
 * of the MIT license.  See the LICENSE file for details.
 */

namespace WP_DEFENDER_VENDOR\Webauthn\Counter;

use WP_DEFENDER_VENDOR\Assert\Assertion;
use WP_DEFENDER_VENDOR\Psr\Log\LoggerInterface;
use WP_DEFENDER_VENDOR\Psr\Log\NullLogger;
use Throwable;
use WP_DEFENDER_VENDOR\Webauthn\PublicKeyCredentialSource;

final class ThrowExceptionIfInvalid implements CounterChecker
{
    /**
     * @var LoggerInterface
     */
    private $logger;

    public function __construct(?LoggerInterface $logger = null)
    {
        $this->logger = $logger ?? new NullLogger();
    }

    public function check(PublicKeyCredentialSource $publicKeyCredentialSource, int $currentCounter): void
    {
        try {
            Assertion::greaterThan($currentCounter, $publicKeyCredentialSource->getCounter(), 'Invalid counter.');
        } catch (Throwable $throwable) {
            $this->logger->error('The counter is invalid', [
                'current' => $currentCounter,
                'new' => $publicKeyCredentialSource->getCounter(),
            ]);
            throw $throwable;
        }
    }
}

```