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Method for controlling security admission turnaround and digital copyright management proxy

A technology to control authority and security, applied in the direction of electrical digital data processing, computer security devices, instruments, etc., can solve the problems of reducing RO turnover security, authority diffusion, etc., and achieve the effect of improving security and ensuring security

Active Publication Date: 2012-01-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventor of this application found that the use of RO backup or transfer may cause the diffusion of authority and reduce the security of RO turnover

Method used

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  • Method for controlling security admission turnaround and digital copyright management proxy
  • Method for controlling security admission turnaround and digital copyright management proxy
  • Method for controlling security admission turnaround and digital copyright management proxy

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] The main idea of ​​the present invention is to record the RO move-in and / or move-out turnover information in the DRM agent, and perform move-in and / or move-out operations on ROs according to the recorded RO turnover information.

[0042] According to the above main idea, in the present invention, the installation information of the RO can be recorded when the RO is installed, and when the RO is moved in, the move-in operation of the RO is performed according to the installation information. Specifically, recording the installation information of the above-mentioned RO may only record the RO identifier of the installed RO in the replay attack list, or record the RO identifier and timestamp of the installed RO in the replay attack list; Recording the installa...

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PUM

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Abstract

The utility model discloses a method for controlling the RO safely turnover, and is characterized in that a RO is installed on the premise that no fix information of non registered RO exists, and then the fix information of the RO is recorded. In addition the utility model discloses an alternative method for controlling the RO safely turnover, and is characterized in that the common information of the RO is recorded when carrying out share operation; the RO is moved in on the premise that no common information of the moving RO is recorded. The utility model also discloses another method for controlling the RO safely turnover, and comprises a method for controlling the permissive RO safely turnover, and is characterized in that the RO is backed up and the backup information is recorded, then the RO is resumed when ensuring that the backup information is recorded. The utility model also discloses three DRM deputies.

Description

technical field [0001] The invention relates to the technical field of digital rights management (DRM), in particular to a method for controlling the safe turnover of a license (RO) and a digital rights management agent (DRM Agent). Background technique [0002] DRM mainly controls the use of digital content through rights restriction and content protection schemes, and protects the legitimate rights and interests of content owners. After the digital content issuer (Content Issuer, CI) encrypts the digital content, the user downloads the encrypted digital content data package to the terminal device; the authorized issuer (Right Issuer, RI) is responsible for distributing the RO corresponding to the digital content, It includes the content decryption key and corresponding permissions. The purchased digital content can be used normally only when the device has the content data package and RO at the same time. The DRM agent on the terminal device uses the private key of the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/00G06F21/10
Inventor 周晨李益民党沛陈大港张仁宙冯雯洁周皓隽周志鹏黄晨
Owner HUAWEI TECH CO LTD
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