Information processing device and method

Details Information processing device and method Information processing device and method

2005-01-27

2011-12-06

Zia, Syed A. (Department: 2431)

Cryptography

Key management

C380S278000, C380S279000, C380S259000, C380S200000, C380S047000, C380S044000, C380S028000, C380S029000, C713S171000, C713S168000, C705S071000, C725S030000, C725S031000, C726S026000, C726S030000, C726S031000, C726S032000, C726S033000

Reexamination Certificate

active

08073143

ABSTRACT:
A configuration is provided which enables usage management and secure data management of data newly generated or obtained that is different from data already stored in an information recording medium. New data such as information which the user has newly generated or downloaded related to content information increments of content management information stored in an information recording medium is recorded as configuration data of the content management unit, in the form of encrypted data to which a unit key corresponding to the content management unit, or a unit key corresponding to a new content management unit, has been applied. According to this configuration, secure data management and usage management is realized for new data the same as with data corresponding to original units.

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