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Data processing device and method and program

A data processing device and data technology, applied in the direction of electrical digital data processing, data recording, recording signal processing, etc., can solve the problems of inability to obtain inherent information of equipment, inability to use data, etc.

Active Publication Date: 2009-06-17
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned prior art, even if one of the internal structures of the device (HDD, CPU, motherboard, etc., OS, application, etc.) is changed, accurate device-specific information cannot be obtained, and there is a problem that the data cannot be used at all.

Method used

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  • Data processing device and method and program
  • Data processing device and method and program
  • Data processing device and method and program

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0041] FIG. 1 is a block diagram showing a configuration example of a data storage / reproduction device 100 according to Embodiment 1 of the present invention. The data storage and playback device 100 includes a secret distribution processing unit 101, an input unit 102, a random number generation unit 103, a one-way function processing unit 104, an encryption processing unit 105, a decryption processing unit 106, a control unit 107, an output unit 108, and a protected area 109. Data storage unit 110, n device-specific information storage units 111-11n.

[0042] The device-specific information storage units 111 to 11n store device-specific values ​​ID1 to IDn called device-specific information. For example, if the device 100 is configured by a personal computer (PC), ID1 to IDn are the IDs of physical devices such as HDD, CPU, or motherboard inside the PC, and the IDs of software such as OS or application programs.

[0043] The protected area 109 is a storage device whose access is r...

Embodiment 2

[0065] Next, Example 2 of the present invention will be described. The second embodiment is a modification of the first embodiment described above. The second embodiment is an example in which the media key Km is not used in the protection of the distributed data Si (1≤i≤n). Therefore, its characteristic is that the processing is simpler than that of the first embodiment. In addition, as an example of the structure of the data storage and playback device in the second embodiment, it is the same as the data storage and playback device 100 shown in FIG. 1 described above.

[0066] FIG. 12 is a schematic diagram showing the outline of the initial setting process executed by the data storage and playback device 100 of the second embodiment. Fig. 13 is a flowchart showing an example of initial setting processing. In the initial setting process, the data storage and playback device 100 executes title key generation and storage processing (steps S401 to S405) for generating and storing t...

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Abstract

The present invention relates to a data processing device, which can recovers the binding data and uses the data even though part of the device structure being changed. Through threshold value secret distributing method, according to the device ID generating distributing data and the medium unique key generated according to the device ID and medium key, to encrypt the title key so as to generate encrypted title key; to generate medium ID key through unilateralism function using the medium key correlative to each ID in the data memory playback device (100), and to recover device ID from the distributing data; to generate medium unique key according to the recovered device ID and medium key, to decrypt the encrypted data through the acquired title key, so as to decrypt the data of the binding object.

Description

Technical field [0001] The present invention relates to a data processing device, a data processing method, and a data processing program that perform binding processing of content using a plurality of IDs. In particular, it relates to a data processing device, a data processing method, and a data processing program that can determine that data is bound even when all IDs are unavailable. Background technique [0002] In the past, content such as music data or video data was widely distributed via communication networks such as the Internet. In recent years, when the published content information is stored in storage media (hereinafter referred to as "storage media") or equipment, a process called binding is performed, that is, it cannot be used in other media. The data. [0003] The binding processing is for the purpose of protecting the copyright of the content, and is necessary processing to prevent the creation of unauthorized copying. Specifically, it can be realized by using...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/00G11B20/00G06F21/60G06F21/62
Inventor 松川伸一秋元直人保坂范和
Owner KK TOSHIBA