Patent ID: 8615659
Filing Date: 2013-12-24
Classification: H04L

Abstract:
1. A system for acquiring a Terminal Binding Key (TBK) in a mobile communication system, the system comprising: a first terminal for subscribing to at least one service using a service guide in which information necessary for reception of each of the at least one subscribed service is stored, and sending the service guide and an identifier (ID) of each of the at least one subscribed service to a smartcard; the smartcard for storing the service guide and the ID of each of the at least one subscribed service, and sending the service guide and the ID of each of the at least one subscribed service to a second terminal through a response message to a request message used for acquiring TBK information, received from the second terminal; and the second terminal for receiving the response message by sending the request message to the smartcard, acquiring TBK information corresponding to a service selected to be played back by the second terminal from among the at least one subscribed service, from the service guide depending on the ID of each of the at least one subscribed service included in the response message, and acquiring the TBK by performing an authentication process using the TBK information.