Authority Delegation for Safe Social Media Services in Mobile NFC Environment

With the rapid development of NFC(Near Field Communications) technologies, NFC-enabled mobile devices are replacing the existing RFID such as mobile payment service, access control system of door locks, and ticketing service. Your service access authority through authenticating the mobile device can be delegated to any person temporarily. But when a person wants to share one’s authority to others, it would be considered prevention for abuse of authority. For example, when parents give the payment right to their children, it can be used indiscriminately. And it can be abused when the authority is transferred to a third party without checking authentication code. So transferred tickets or copied access authority of door locks can occur. In this paper, for safe authority delegation, we will contain the authorized user’s identity and check authorization in mobile device whether it contains suitable delegation information or not.