Digital exequatur sending system and digital work decipher operation method

A technology of digital works and operation methods, which is applied in digital data authentication, electronic digital data processing, instruments, etc., and can solve the problems that users cannot facilitate digital works.
CN101425112AActive Publication Date: 2009-05-06PEKING UNIV +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PEKING UNIV
Publication Date
2009-05-06

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Abstract

The invention relates to the field of digital work copyright protection, in particular to a technique in which a multi-computing apparatus uses a digital work upon authorization, and more particular to a digital permit transmitting system, a computing apparatus and a digital work decryption operating method. The method comprises the following steps: the computing apparatus obtains a digital permit of the digital work; the digital permit is generated according to characteristic information of an authorization apparatus set and a decryption key of the digital work; and the computing apparatus obtains an apparatus identifier of the present computing apparatus, restores the decryption key according to the digital permit and the apparatus identifier of the present computing apparatus, and operates the digital work after decrypting the digital work by using the decryption key. Due to the convenient reduplication of the digital permit, the authorized computing apparatus can conveniently obtain the digital permit and conveniently utilizing the apparatus identifier of the present computing apparatus and the digital permit to obtain the decryption key so as to decrypt and operate the digital work.
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Description

technical field

[0001] The invention relates to the field of copyright protection of digital works, in particular to a technique for using digital works by multiple computing devices under authorized conditions. Background technique

[0002] With the rapid development of computer information technology and the Internet, more and more digital works and other digital information have appeared, and the Internet has become an important way for people to obtain rich information. However, because digital information is easily copied, modified, and disseminated, a large amount of digital content is illegally shared and used illegally, causing huge economic losses to relevant rights holders, and the protection of copyright of digital works has become highly necessary.

[0003] Digital Rights Management (DRM for short) is to protect the interests of owners of copyright works through technical means, and to protect their digital works in an authorized and controlled manner during the ...

Claims

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