Information processing apparatus, controller, key issuing authority, revocation list validity determination method, and key issuance method

摘要

The memory card 30 indicates the key information issued by the key issuing authority, the version of the latest revocation list issued at the time when the key information is generated, and a version that is information associated with the key information A storage unit 302 that stores information, a revocation list reception unit 304 that receives a revocation list to which a version is added, a version of the revocation list received by the revocation list reception unit 304, and the version information And a version verification unit 308 that compares the invalidation list, and suppresses the processing of the invalidation list writing unit 309 when the version of the invalidation list is older than the version information.