<?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->algorithm, hash_algos(), true)) {
            throw new \LogicException(sprintf('The algorithm "%s" is not supported.', $this->algorithm));
        }

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

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

        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));
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MzM4MTU0NTI5MjY4OTYwOCA3MDU5MzU2MjUxNDg2NjAxIDY2MDA2NjA4Mjk2ODM0NDg=