Digital copyright management device and method

Abstract

Disclosed is a digital copyright management device and method, which is fit for technique of digital copyright management system in the office environment design adopted in the mobile telephone and also the technique fit for protecting the copyright with large capacity such as MP3 file, the game, the image etc in the mobile telephone. The method of the invention includes the following steps: the uses is connected to the network server search or purchase content through the computer, and in order to use the above contents in the mobile telephone, the digital copyright management sever requests the mobile telephone logging to the telecom operator server; the user requests the operator server for the permission for the using of the content, and is given the permission of numeralization using the symmetry secret key. According to the invention, in the mobile telephone, the permission can be given without the PKI algorithm and the effect of protecting the copyright of content can be realized.

Description

technical field [0001] The present invention relates to a technology for performing digital rights management (DRM: Digital Rights Management) functions in mobile communication terminals such as mobile phones, in particular to a digital rights management device and method for adopting a DRM system suitable for office environment design in a mobile phone environment. Background technique [0002] Recently, thanks to the rapid development of information and communication technology, the production and use of digital content has gradually become popular, and the problem of illegal copying of works has become more serious and the related losses have gradually increased. As a result, the DRM system for protecting the intellectual property rights of content producers has gradually drawn widespread attention. [0003] Generally speaking, the DRM system is used to protect various digital forms of multimedia content such as music, video, electronic documents, and images transmitted o...

AI Technical Summary

Problems solved by technology

Also, although the above-mentioned public key algorithm has high stability, it will be quite difficult even in an office computer environment to generate the public key and private key used in the public key algorithm by a function for generating random numbers

[0017] And, the DRM environment in the mobile phone of prior art only considers the download operation utilizing wireless environment, but, directly downloading content such as large-capacity game or MP3 in wireless environment will be extremely inefficient

[0018] Therefore, in the prior art DRM system, it is difficult to use the public key algorithm to grant the permission to use the content, and to effectively distribute and manage the content in the mobile phone.

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