public function validateAgainstHash($buffer, $hash)
    {
        // Already loaded phpass?
        if (null === self::$passwordHash) {
            include_once DOOZR_DOCUMENT_ROOT.'Service/Doozr/Password/Service/Lib/Hash.php';
            /* @var self::$passwordHash Doozr_Password_Service_Hash */
            self::$passwordHash = new Doozr_Password_Service_Hash(8, false);
        }

        // Return validation status
        return self::$passwordHash->CheckPassword($buffer, $hash);
    }