/usr/share/php/Symfony/Component/Security/Csrf/TokenGenerator/UriSafeTokenGenerator.php is in php-symfony-security-csrf 3.4.6+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | <?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Security\Csrf\TokenGenerator;
/**
* Generates CSRF tokens.
*
* @author Bernhard Schussek <bernhard.schussek@symfony.com>
*/
class UriSafeTokenGenerator implements TokenGeneratorInterface
{
private $entropy;
/**
* Generates URI-safe CSRF tokens.
*
* @param int $entropy The amount of entropy collected for each token (in bits)
*/
public function __construct($entropy = 256)
{
$this->entropy = $entropy;
}
/**
* {@inheritdoc}
*/
public function generateToken()
{
// Generate an URI safe base64 encoded string that does not contain "+",
// "/" or "=" which need to be URL encoded and make URLs unnecessarily
// longer.
$bytes = random_bytes($this->entropy / 8);
return rtrim(strtr(base64_encode($bytes), '+/', '-_'), '=');
}
}
|