USER EQUIPMENT AND CONTROL METHOD THEREFOR

摘要

There is provided a User Equipment comprising: a content obtaining unit that obtains a content item that is not reproducible without permission data for enabling reproduction of the content item; a receiving unit that receives the permission data; a detecting unit that detects that the permission data indicates that a subscriber of a predetermined network operator is entitled to reproduce the content item using the permission data; a key obtaining unit that obtains key data from a module managing subscription information for the predetermined network operator by sending, to the module, information representing the predetermined network operator and information representing an authentication server for determining validity of the key data; a determining unit that determines whether or not the key data is valid by communicating with the authentication server; and a reproducing unit that reproduces the content item using the permission data if it is determined that the key data is valid.