INFORMATION PROCESSING DEVICE, INFORMATION STORAGE DEVICE, INFORMATION PROCESSING STYSTEM, INFORMATION PROCESSING METHOD, AND PROGRAM

摘要

An objective of the present invention is to implement usage controls on a per-content basis in content usage controls to which a revocation list is applied. Encrypted content, usage control information, and a revocation list in which is recorded information of content player devices which are invalidated are stored on a memory card or other information storage device, and a data processing unit determines whether a host which carries out play of the content is permitted to play the content. The data processing unit acquires from the usage control information an entry identifier which identifies a log entry in the revocation list, determines whether a host ID is logged in an entry which is designated by the entry identifier, and carries out a host content play allowance determination on the basis of the result of the determination. A subkey which is a title key generation key which is applied to decrypting the encoded content is generated and provided only when play allowance is determined.