Provided is a configuration for deciding an application use limit in accordance with a time stamp. A certificate revocation list (CRL) containing information for revoking a content owner as a provider of an application program recorded on a disc is referenced to judge whether a content owner identifier recorded on the application certificate is included in the CRL. If yes, the time stamp stored in the content certificate is compared to a CRL time stamp. If the content certificate time stamp has date/time data after the CRL time stamp, the application program use process is inhibited or limited. With this configuration, it is possible to limit only the use of the application after revoked without limiting use of the application before being revoked.