Data transfer system for digital copyright management

Abstract

The invention relates to data transmission system for the management of digital copyright, the system includes: content providing system which is used to provide the media data; decoder which is used to connect with the content providing system to obtain the key and decipher and decode the media data; authorization certification system which is connected with the decoder and certify the decoder and provide key for the decoder; display system which is connected with the decoder and display the data information input by the decoder. The decoder includes: authentication module which is connected with the authentication system and permission adapter, deciphering module which is connected with the authentication module and the package adapter, and the decoding module which is connected with the deciphering module and the display system. The technical project of invention can realize the data transmission between the content providing system, decoder and display system, and it can protect the key and the media data effectively, and realize the media copyright protection for the system level.

Description

technical field [0001] The invention relates to a data transmission system, in particular to a data transmission system for digital rights management. Background technique [0002] Digital rights management (DRM) is a method of protecting multimedia content from unauthorized playback and copying. It provides a means for content providers to protect their proprietary music or other data from illegal copying and use. DRM technology protects digital content by encrypting digital content and attaching usage rules. The working principle of DRM technology is: first establish a digital program authorization center (rights issuer), encode the compressed digital program content, and then use a key to encrypt and protect the content. The encryption key is passed through the Public Key Infrastructure (PKI for short). ) or other secure channels to authorized users, and the authorization is usually in the form of a license. When the user plays back the content, he needs to obtain the ...

AI Technical Summary

Problems solved by technology

[0003] In the existing digital rights management system, in order to ensure the safe decryption of encrypted content, the decryption and decoding are usually placed in a device that is not easy to attack (such as a chip), but the key for decryption is input in plain text from the outside The device may be intercepted, and the decoded and decrypted content is also output in plain text, which is also easy to be used illegally

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