DEVICE, METHOD AND MEDIUM FOR RECORDING INFORMATION, DEVICE AND METHOD FOR REPRODUCING INFORMATION, AND PROGRAM STORAGE MEDIUM

摘要

PROBLEM TO BE SOLVED: To realize a system and a method for realizing legal contents utilization by preventing an illegal utilization of contents by right data rewriting. SOLUTION: The right data composed of contents utilization limitation information and DRM(digital rights management) data composed of a right data and an encipherment contents key, etc., are recorded on a digital data recording medium (media), and an interpolation check value(ICV) for the DRM data is stored in an area (protected area) where the interpolation check value(ICV) can be recorded/reproduced only through a dedicated IC different from a normal data recording and reproduction system. A key for generating a key for ICV generation verification is performed by an EKB distribution that distributes the key by a key distribution configuration of a tree (tree) structure. By this configuration, it is possible to prevent the contents from being illegally utilized due to right data rewriting.