INFORMATION RECORDING APPARATUS, INFORMATION REPRODUCING APPARATUS, INFORMATION RECORDING METHOD, INFORMATION REPRODUCING METHOD, KEY UPDATING TERMINAL DEVICE, GENERATION CONTROL KEY UPDATING METHOD, INFORMATION RECORDING MEDIUM, AND PROGRAM PROVIDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To limit recording and reproducing using a master key of old generation by strictly managing a master key for generation controls. SOLUTION: When reproduction is impossible because the generation of a master key which a reproducing apparatus holds is older than a key used at recording of data, and when recording is impossible because the generation of a master key which a recording apparatus holds is older than a key necessary for recording on a recording medium, a user is prompted to update the master key, and then reproducing or recording processing is enabled by obtaining a necessary master key. The updated master key is distributed by using transmission media such as a recording medium, network, IC card, and telephone line, and for example, by using a tree type key distribution configuration with a form which can be processed only by a specified device.