Abstract: A method for receiving contents using a mobile terminal according to the present invention is provided. The method includes generating a security channel connected to system being in charge of a service and content protection (SCP) client through an agent downloaded and installed in a mobile terminal; downloading and installing one or multiple SCP client software of different kind from the system through the security channel generated by the agent; and playing back the service or content provided in protected state by a content provider among the one or multiple SCP client software of different kind by driving the decodable SCP client software.

Abstract: A terminal for reproducing a digital content in support of transmitting/receiving the digital content to/from another terminal based on whether a terminal is registered in a domain and whether a terminal belongs to a person use scope such that the terminal belonging to the person use scope is not registered in the domain.

Abstract: Disclosed are a master terminal capable of registering and managing terminals that belong to a personal use scope, which will be referred to as personally used terminals or personal use terminals, hereafter, and a method and system for managing personal use terminals by using the master terminal. The method for managing a personal use group using a first master terminal to register and manage terminals belonging to a personal use scope includes: requesting a second master terminal that belongs to the personal use scope for personal use group information; receiving the personal use group information from the second master terminal; and registering a terminal that belongs to the personal use scope as the personal use group based on the received personal use group information.

Abstract: A terminal for reproducing a digital content in support of transmitting/receiving the digital content to/from another terminal includes: an encryption unit configured to encrypt the digital content to produce encrypted digital content; a use scope determining unit configured to determine a use scope of a target terminal to which the digital content is to be transmitted; a personal-use authentication information generation unit configured to transform encryption information of the digital content according to a determination result of the use scope determining unit and generate personal-use authentication information; and a communication unit configured to transmit the encrypted digital content and the personal-use authentication information to the target terminal.