Classes List

Symfony\Component\Security\Core\Encoder\BasePasswordEncoder

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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
{
    const MAX_PASSWORD_LENGTH = 4096;

    /** * Demerges a merge password and salt string. * * @param string $mergedPasswordSalt The merged password and salt string * * @return array An array where the first element is the password and the second the salt */
    protected function demergePasswordAndSalt($mergedPasswordSalt)
    {
        if (empty($mergedPasswordSalt)) {
            return array('''');
        }

        $password = $mergedPasswordSalt;
        $salt = '';
        $saltBegins = strrpos($mergedPasswordSalt'{');

        if (false !== $saltBegins && $saltBegins + 1 < strlen($mergedPasswordSalt)) {
            $salt = substr($mergedPasswordSalt$saltBegins + 1, -1);
            $password = substr($mergedPasswordSalt0$saltBegins);
        }

        return array($password$salt);
    }

    /** * Merges a password and a salt. * * @param string $password The password to be used * @param string $salt The salt to be used * * @return string a merged password and salt * * @throws \InvalidArgumentException */
    protected function mergePasswordAndSalt($password$salt)
    {
        if (empty($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. * * @param string $password1 The first password * @param string $password2 The second password * * @return bool true if the two passwords are the same, false otherwise */
    protected function comparePasswords($password1$password2)
    {
        return hash_equals($password1$password2);
    }

    /** * Checks if the password is too long. * * @param string $password The password to check * * @return bool true if the password is too long, false otherwise */
    protected function isPasswordTooLong($password)
    {
        return strlen($password) > static::MAX_PASSWORD_LENGTH;
    }
}