Content reproducing device, content reproducing method, and content reproducing system

摘要

According to one embodiment, a content reproducing device is provided with connection unit and reproducing unit. The connection unit connects a license server and removable medium to each other in such a manner that mutual authentication can be carried out between the license server and removable medium, and rights information can be downloaded from the license server to the removable medium. The reproducing unit carries out mutual authentication between itself and the removable medium and, when the authentication is successful, acquires rights information recorded on the removable medium to thereby decrypt the encrypted content item delivered by the content server on the basis of the rights information, and subject the decrypted content item to streaming reproduction.

主权项

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 tocarry 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.