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<?php

/**
 * Part of the Joomla Framework Authentication Package
 *
 * @copyright  Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Authentication\Password;

/**
 * Password handler for BCrypt hashed passwords
 *
 * @since  1.2.0
 */
class BCryptHandler implements HandlerInterface
{
    /**
     * Generate a hash for a plaintext password
     *
     * @param   string  $plaintext  The plaintext password to validate
     * @param   array   $options    Options for the hashing operation
     *
     * @return  string
     *
     * @since   1.2.0
     */
    public function hashPassword($plaintext, array $options = [])
    {
        return password_hash($plaintext, \PASSWORD_BCRYPT, $options);
    }

    /**
     * Check that the password handler is supported in this environment
     *
     * @return  boolean
     *
     * @since   1.2.0
     */
    public static function isSupported()
    {
        // Check the password_verify() function exists, either as part of PHP core or through a polyfill
        return \function_exists('password_verify');
    }

    /**
     * Validate a password
     *
     * @param   string  $plaintext  The plain text password to validate
     * @param   string  $hashed     The password hash to validate against
     *
     * @return  boolean
     *
     * @since   1.2.0
     */
    public function validatePassword($plaintext, $hashed)
    {
        return password_verify($plaintext, $hashed);
    }
}