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- <?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\Core\Encoder;
- /**
- * BasePasswordEncoder is the base class for all password encoders.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
- abstract class BasePasswordEncoder implements PasswordEncoderInterface
- {
- public const MAX_PASSWORD_LENGTH = 4096;
- /**
- * {@inheritdoc}
- */
- public function needsRehash(string $encoded): bool
- {
- return false;
- }
- /**
- * Demerges a merge password and salt string.
- *
- * @return array An array where the first element is the password and the second the salt
- */
- protected function demergePasswordAndSalt(string $mergedPasswordSalt)
- {
- if (empty($mergedPasswordSalt)) {
- return ['', ''];
- }
- $password = $mergedPasswordSalt;
- $salt = '';
- $saltBegins = strrpos($mergedPasswordSalt, '{');
- if (false !== $saltBegins && $saltBegins + 1 < \strlen($mergedPasswordSalt)) {
- $salt = substr($mergedPasswordSalt, $saltBegins + 1, -1);
- $password = substr($mergedPasswordSalt, 0, $saltBegins);
- }
- return [$password, $salt];
- }
- /**
- * Merges a password and a salt.
- *
- * @return string a merged password and salt
- *
- * @throws \InvalidArgumentException
- */
- protected function mergePasswordAndSalt(string $password, ?string $salt)
- {
- if (empty($salt)) {
- return $password;
- }
- if (false !== strrpos($salt, '{') || false !== strrpos($salt, '}')) {
- throw new \InvalidArgumentException('Cannot use { or } in salt.');
- }
- return $password.'{'.$salt.'}';
- }
- /**
- * Compares two passwords.
- *
- * This method implements a constant-time algorithm to compare passwords to
- * avoid (remote) timing attacks.
- *
- * @return bool true if the two passwords are the same, false otherwise
- */
- protected function comparePasswords(string $password1, string $password2)
- {
- return hash_equals($password1, $password2);
- }
- /**
- * Checks if the password is too long.
- *
- * @return bool true if the password is too long, false otherwise
- */
- protected function isPasswordTooLong(string $password)
- {
- return \strlen($password) > static::MAX_PASSWORD_LENGTH;
- }
- }
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