Patent ID: 8997216
Filing Date: 2015-03-31
Classification: G06F,G11B,H04L

Abstract:
1. A non-transitory computer-readable recording medium device comprising: a storage unit; and a tamper-resistant controller, the storage unit storing one or more contents and one or more individual revocation lists, each individual revocation list being associated with a content among the one or more contents, a plurality of apparatuses being related to use of the content, and when one or more apparatuses among the plurality of apparatuses is revoked, each individual revocation list includes one or more revocation identifiers, each revocation identifier identifying a revoked apparatus, and the controller including: the storage unit further stores, in association with the content, usage condition information indicating a condition for use of the content by a user and including entry information indicating storage positions of the revocation identifiers included in the individual revocation lists, and the judgment unit reads the revocation identifier included in the individual revocation list associated with the content to which the acquisition request is related from the storage position indicated by the entry information included in the usage condition information stored by the storage unit and performs the judgment using the read revocation identifier.