Authentication gateway apparatus for accessing ubiquitous service and method thereof

An authentication method for a ubiquitous service authentication gateway, the authentication method comprising the steps of:

• (a) causing a first authentication device of a portable apparatus to transmit an access request message to an authentication server of a service provider, to receive an authentication token according to a prescribed authentication system, and to store the received authentication token in a main authentication unit thereof;
• (b) when a specific button on the first authentication device of the portable apparatus is pressed, causing the portable apparatus to operate as an authentication gateway;
• (c) when the first authentication device of the portable apparatus is connected to a second authentication device of a ubiquitous apparatus through a wireless communication system, requesting the second authentication device for its unique value and receiving the unique value from the second authentication device;
• (d) combining the authentication token stored in the main authentication unit of the first authentication device of the portable apparatus with the unique value of the second authentication device, and transmitting the combined authentication token and unique value to the authentication server, to thereby request a service;
• (e) causing the authentication server to receive the combined authentication token and unique value, and if the service is permitted, negotiating a service quality with the ubiquitous apparatus, to which the second authentication device is attached;
• and
• (f) based on the result of the negotiation, causing the authentication server to provide service data to the ubiquitous apparatus, to which the second authentication device is attached.