Classes List

Symfony\Component\Security\Core\Encoder\MessageDigestPasswordEncoder

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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;

use Symfony\Component\Security\Core\Exception\BadCredentialsException;

/** * MessageDigestPasswordEncoder uses a message digest algorithm. * * @author Fabien Potencier <fabien@symfony.com> */
class MessageDigestPasswordEncoder extends BasePasswordEncoder
{
    private $algorithm;
    private $encodeHashAsBase64;
    private $iterations;

    /** * @param string $algorithm The digest algorithm to use * @param bool $encodeHashAsBase64 Whether to base64 encode the password hash * @param int $iterations The number of iterations to use to stretch the password hash */
    public function __construct($algorithm = 'sha512'$encodeHashAsBase64 = true$iterations = 5000)
    {
        $this->algorithm = $algorithm;
        $this->encodeHashAsBase64 = $encodeHashAsBase64;
        $this->iterations = $iterations;
    }

    /** * {@inheritdoc} */
    public function encodePassword($raw$salt)
    {
        if ($this->isPasswordTooLong($raw)) {
            throw new BadCredentialsException('Invalid password.');
        }

        if (!in_array($this->algorithmhash_algos(), true)) {
            throw new \LogicException(sprintf('The algorithm "%s" is not supported.'$this->algorithm));
        }

        $salted = $this->mergePasswordAndSalt($raw$salt);
        $digest = hash($this->algorithm$saltedtrue);

        // "stretch" hash
        for ($i = 1$i < $this->iterations++$i) {
            $digest = hash($this->algorithm$digest.$saltedtrue);
        }

        return $this->encodeHashAsBase64 ? base64_encode($digest) : bin2hex($digest);
    }

    /** * {@inheritdoc} */
    public function isPasswordValid($encoded$raw$salt)
    {
        return !$this->isPasswordTooLong($raw&& $this->comparePasswords($encoded$this->encodePassword($raw$salt));
    }
}