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A method for realizing compatibility of different digital rights management systems

A technology for digital rights management and digital content, applied in digital transmission systems, transmission systems, data processing applications, etc., and can solve problems such as poor system compatibility

Inactive Publication Date: 2011-12-28
SUMAVISION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In many DRM architectures, due to the different technologies adopted, the defined authorization and license formats are also different, so the compatibility between different systems is poor

Method used

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  • A method for realizing compatibility of different digital rights management systems
  • A method for realizing compatibility of different digital rights management systems
  • A method for realizing compatibility of different digital rights management systems

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0035] The core content of the present invention is: by adopting general RM message encapsulation structure, LM message encapsulation structure and SC standard interface API between DRM terminal system and SC, unified message encapsulation structure, safe container interface and message processing mode, realize different DRM Compatibility between systems.

[0036] like figure 1 as shown, figure 1 The flow chart of the method for realizing mutual compatibility of different digital rights management systems provided by the present invention, the method includes two workflows, one is the process of encrypting digital content and generating authorization information by the DRM front-end system, and the other is the process o...

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Abstract

The present invention discloses a method to realize compatibility of different DRM systems belonging to the technical field of digital copyright conservation, which comprises a universal RM information packaging structure, a LM information packaging structure and a SC standard interface API. A front-end DRM system encrypts digital contents to create digital cryptographs and generate RM information and LM information through the universal RM information packaging structure and the LM information packaging structure. And then, the created digital cryptographs, the RM information and the LM information are dispatched to a terminal DRM system. The terminal DRM system transmits the RM information and the LM information to the SC through the SC standard interface API. The SC extracts a decryption key from the LM information according to the RM information and sends the decryption key to the terminal DRM system through the SC standard interface API. Thus, the terminal DRM system decrypts the digital cryptographs and obtains decrypted contents. The present invention realizes compatibility of different DRM systems.

Description

technical field [0001] The invention relates to the technical field of digital copyright protection, in particular to a method for realizing mutual compatibility of different digital copyright management systems. Background technique [0002] With the development of information technology and the increasing abundance of digital media, the current society has an increasingly strong demand for digital copyright protection technology. Under this trend, the digital rights management (Digital Rights Management, DRM) system has attracted the attention of many manufacturers, and many different DRM systems have emerged at home and abroad. [0003] In addition, there have been many influential DRM research organizations in the world, such as OMA, Marlin, etc., and they have proposed different DRM architectures. [0004] In many DRM architectures, due to the different technologies adopted, the defined authorization and license formats are also different, so the compatibility between ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32H04L12/24G06Q30/00
Inventor 宿玉文陈德权戴成熊彬
Owner SUMAVISION TECH CO LTD