Management method and device of DRM licenses

Abstract

The invention discloses a management method and a device of DRM license, pertaining to the digital copyright protection field, and aiming to resolve the problem in the prior art that the security is poor and the application is inconvenient when DRM license is stored. The management method of the DRM license includes the steps that: generating a key of a user terminal; applying a DRM license; de-securing the secured DRM license; saving the de-secured DRM license. The DRM license management device provided by the invention comprises a key module for generating the key of the user terminal, an applying module for applying the DRM license, a de-securing processing module for de-securing the secured DRM license, a storing module for saving the de-secured DRM license. The invention can be applied to mobile memory equipment such as cell phones, mobile hard disks, flash memories, MP3 and so on, and manage the DRM license.

Description

technical field [0001] The invention relates to the field of digital copyright protection, in particular to a DRM license management method and device. Background technique [0002] DRM (Digital Rights Management) is a comprehensive solution based on information security technology, which can effectively prevent the illegal use and copying of digital media files and achieve the purpose of protecting digital intellectual property rights. With the advent of the digital age, DRM has become more and more important, and DRM has become the foundation and guarantee for the development of digital content. [0003] The working principle of the DRM system is as follows: first, an information authorization center is established. The information authorization center creates a public key (Pubkey) and a private key (Privkey), and uses the encrypted master key (MK), the license key seed (Seek) and the key identifier (KeyID) to generate an encryption key (Key) . This encryption key is us...

AI Technical Summary

Problems solved by technology

If the user needs to change the computer frequently, the DRM license must be re-downloaded on the computer used every time it is replaced, which adds a lot of trouble to the user.

Moreover, every time a DRM license is downloaded, the user needs to pay a fee for purchasing the DRM license, which creates a financial burden on the user.

[0007] In addition, on the computer A, after decrypting the DRM license corresponding to the above-mentioned encrypted movie, since the decrypted DRM license will be stored on the computer A, when other users use the computer A, it is easy to Decipher or copy the DRM license stored on computer A, and then obtain the right to watch the movie, causing damage to the rights and interests of legal users

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