Digital exequatur sending system and digital work decipher operation method

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.

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 ...

AI Technical Summary

Problems solved by technology

[0009] To sum up, the digital work sharing methods in the prior art make it impossible for users to conveniently use (run) authorized digital works on multiple computing devices (especially computing devices that do not have the function of connecting to the Internet).

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