Patent ID: 9165122
Filing Date: 2015-10-20
Classification: G06F,H04L

Abstract:
1. A content reproducing device comprising: a connection controller configured to connect a license server configured to deliver rights information, and a removable medium provided with a content protection function to each other in such a manner that mutual first authentication can be carried out between the license server and the removable medium, and that the rights information comprising an address and a title key of a content item can be downloaded from the license server to the removable medium; and a reproducing controller configured to carry out mutual second authentication between itself and the removable medium when the first authentication is successful, acquire the rights information comprising the address and the title key from the removable medium when the second authentication is successful, acquire an encrypted content item from a content server on the basis of the address in the acquired rights information, and decrypt the encrypted content item on the basis of the title key in the acquired rights information, and subjecting the decrypted content item to streaming reproduction.