Data processing apparatus, method and system, data verification value communication methods, content data generation and content data verification value assignment and means of provision and program supply

摘要

"DATA PROCESSING APPARATUS, METHOD AND SYSTEM, DATA VERIFICATION VALUE COMMUNICATION METHODS, CONTENT DATA GENERATION AND CONTENT DATA VERIFICATION VALUE ASSIGNMENT AND PROVISIONAL MEANS OF PROVISION AND SUPPLY MEANS" AND PROTECTION PROGRAM AND SUPPLY MEANS. A data processing device and data processing method find out which data is valid, prevent encryption processing key data from being revealed, eliminate illegal use of content data, restrict the use of content, apply a plurality of different formats data to content and efficiently perform the reproduction processing of compressed data. The partial data verification process is performed by collating partial integrity data as check values for a combination of partial data from a content, and the process of verifying the completeness of the partial data combination is performed by collating the check values partial integrity check value verification integrity checks that match the partial integrity check values. Master keys to generate individual keys needed for a process such as data encryption are stored in the storage section and keys are generated as needed. A list of illegal devices is stored in the header information of a content and is referred to when data is used. Keys specific to a data processing device and common keys are stored, and the keys are selectively used according to content usage restrictions. A plurality of content blocks are coupled, and at least part of the content blocks are applied to an encryption process by a Kcon encryption key and then encryption key data which is the Kcon encryption key encrypted by a Kdis encryption key, are stored in the header section. Content data is made up of compressed data and an expansion processing program, or a combination of types of compression programs, and the playback device can determine an expansion program applicable to compressed content.