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Method, equipment and system for transferring field permission

A technology of terminal equipment and domain identification, which is applied in the field of transfer domain licensing, and can solve the problems of authority diffusion and other issues

Active Publication Date: 2011-08-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the transferred license is a domain license, this scheme will result in that once the domain license is transferred to SRM, any DRM Agent (whether it is a domain member or a non-domain member) who can pass the authentication with SRM can consume the domain online on SRM permission, resulting in the proliferation of permissions

Method used

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  • Method, equipment and system for transferring field permission
  • Method, equipment and system for transferring field permission
  • Method, equipment and system for transferring field permission

Examples

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Embodiment Construction

[0056] The method in the embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0057] Such as image 3 As shown, in the embodiment of the present invention, a processing flow of transferring the domain license from the first terminal device to the secure removable medium is as follows:

[0058] Step 31. The first terminal device sends the license and first related information of the license to the secure removable medium, where the first related information includes a license encryption key and indication information for indicating that the license is a domain license.

[0059] Step 32: The secure removable medium receives the license and the first related information, and saves the license locally.

[0060] In an embodiment, the first related information in step 31 may also include the domain identifier of the domain where the license is located; the license encryption key in the first related information may a...

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Abstract

The invention discloses a method for transferring domain permission. The method comprises: a first terminal device transmits permission and first related information of the permission to safe mobile medium, the first related information comprising permission encryption key and indication information for indicating the permission as domain permission; safe mobile medium receiving the permission and the first related information and keeps locally of the permission. The invention simultaneously discloses a terminal device, safe mobile medium and digital copyright management system. The inventivetransferring method avoids permission right diffusion when transferring domain permission using safe mobile medium.

Description

technical field [0001] The invention relates to the technical field of digital rights management, in particular to a method, device and system for transferring domain licenses. Background technique [0002] Digital Rights Management (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 (Rights Issuer, RI) is responsible for distributing the license corresponding to the digital content , which includes a Content Encryption Key (Content Encryption Key, CEK) and corresponding permissions. The purchased digital content can only be used normally if the device has both the content data package (which contains the information necessary to decrypt the digital content) and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L9/30H04L29/06
Inventor 周皓隽党沛黄晨冯雯洁张仁宙
Owner HUAWEI TECH CO LTD