    public static function randpass($vars)
    {
        if (is_array($vars)) {
            $hash = sha1($vars['passwd'].SECURITY_KEY.$vars['userid']);
        } else {
            $hash = sha1($vars.SECURITY_KEY);
        }

        $hash = substr($hash, 5, 16);
        $pass = md5($hash);

        return $pass;
    }
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.