Information processing device and method

An information processing device and information recording technology, applied in recording signal processing, secure communication devices, information storage, etc., to achieve the effect of preventing illegal content use

Inactive Publication Date: 2010-12-15
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when encryption keys are managed as files that can be manipulated by users, simply "deleting" the encryption keys stored in the file is not sufficiently secure

Method used

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  • Information processing device and method
  • Information processing device and method
  • Information processing device and method

Examples

Experimental program
Comparison scheme
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no. 1 example

[0175] Figure 17 The structure of the unit key file is shown in the case where a CPS unit is set in association with a playlist. exist Figure 17 In the CPS unit key file shown in , the CPS unit numbers associated with menu thumbnails, mark thumbnails, and playlists #1~#np are recorded in the CPS unit key file header 301, associated with each CPS unit number The encryption unit key for is stored in the CPS unit key block 302. The CPS unit key file can be referenced with the previous image 3 and Figure 7 Indicates the use of CPS unit settings for instance associations.

[0176] (2) Second example of the setting of the CPS unit associated with the playlist

[0177] Figure 18 Also shown is the structure of a unit key file in the case where a CPS unit is set in association with a playlist. exist Figure 18 In the shown CPS unit key file, in the CPS unit key file header 311, the CPS unit number associated with the menu thumbnail and the mark thumbnail is recorded, for the...

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PUM

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Abstract

The invention discloses an information disposing device on the information record dielectric, which comprises the following parts: content enciphered disposer, which generates enciphered content through relative unit management unit key unit executing the enciphered operation; unit key file disposer, which generates unit key file of memory unit key and enciphers the unit key file or unit key filedata based on enciphered seed key, wherein the seed value is updated along with exchanging of unit key data in the unit key file; data recorder, which records unit key file and enciphered content management unit on the information record dielectric according to preset data record pattern.

Description

[0001] Cross References to Related Applications [0002] The present invention contains subject matter related to Japanese Patent Application JP 2005-118712 filed in the Japan Patent Office on Apr. 15, 2005, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to an information processing device, an information recording medium, an information processing method, and a computer program. More specifically, the present invention relates to an information processing device, an information recording medium, An information processing method, and a computer program. Background technique [0004] Various types of software data (hereinafter referred to as "content"), for example, audio data such as music, image data such as movies, game programs, and various application programs, can be stored in recording media as digital data such as Blu-ray discs using blue lasers Digital Versatile Disc (DVD), Mini Disc (MD)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/00G06F12/14G06F21/10G06F21/60G06F21/62G06F21/64
CPCG11B20/0021H04L9/08H04N21/4408H04L2209/60H04L9/0869H04L9/0891G11B20/00086G11B20/00362G11B20/00492G11B2020/10833
Inventor 高岛芳和上田健二朗
Owner SONY CORP
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