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Method, equipment and system for forwarding permission

A device and device determination technology, applied in key distribution, can solve problems such as the inability to meet the needs of RO verification

Active Publication Date: 2012-05-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] On the other hand, in the process of implementing RO forwarding through the forwarding device, if the forwarding device does not verify the forwarded RO, the forwarding process is likely to be used by illegal devices and become a way to distribute ROs
However, the existing technology cannot meet the requirement of verifying the RO during the RO forwarding process.

Method used

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  • Method, equipment and system for forwarding permission
  • Method, equipment and system for forwarding permission
  • Method, equipment and system for forwarding permission

Examples

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specific example

[0105] Such as Figure 14 As shown, in the embodiment of the present invention, a specific example of forwarding permission is as follows:

[0106] Assumption: An LRM (identification LRM-01) and RI (identification RI-01) establish a relationship through a registration agreement and complete the interaction of relevant information to support and forward the RO issued by the other party (RI can transfer the RO issued by the LRM; LRM The RO issued by RI can also be transferred); the device DRM Agent0 obtains a RO (RO-01) with 5 playback rights from LRM-01 through the existing 1-pass Rights Object Acquisition protocol; after that, DRM Agent0 consumes the RO- For the two playback rights in 01, the current remaining rights need to be forwarded to DRM Agent1 through RI-01; RI-01 forwards the RO to be forwarded to the destination device DRM Agent1 through the existing 2-pass Rights Object Acquisition Protocol.

[0107] Step 1400, LRM-01 sends a registration request message R2R...

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Abstract

The invention discloses a transmitting persmissible method, comprising: a first issuing device receives the transmitting persmissible request information, wherein the persmission is the one transmitted by a second issuing device; the first issuing device transmits the permission after determining that the second issuing device establishes the relations. The invention also discloses a persmissionissuing device and a communication system. According to the invention, that an issuing device transmits the permission issued by the other issuing device is realized, which advances the persmissible transmitting flexibility.

Description

technical field [0001] The invention relates to the technical field of digital rights management, in particular to a method, device and system for forwarding permission. 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 license server (Rights Issuer, RI) is responsible for distributing the license corresponding to the digital content, It includes content encryption keys and corresponding permissions. The purchased digital content can only be used normally if the device has both the content data package and the license. The DRM terminal (DRM Agent) uses the public key of the device to decrypt to obtain the license encryption...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04L9/32G06F21/10
CPCG06F2221/0706G06F21/10G06F21/1012
Inventor 张仁宙党沛周志鹏陈大港周皓隽黄晨冯雯洁
Owner HUAWEI TECH CO LTD
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