Dynamic digital right management method and system based on identification password

Abstract

The embodiment of the invention provides a dynamic digital right management method and a system based on an identification password. The method mainly includes: a KGC generates identification password public and private key pairs of a user and sets the key pairs in a USBKEY; a client activates the USBKEY according to a personal identification password PIN password inputted by the user, and obtains an identification password private key of the user set in the USBKEY; digital signature operation of a message is performed by employing the identification password private key of the user, signature information is obtained, and the message and the signature information are transmitted to a right management platform server; the right management platform server obtains an identification password public key of the user via the KGC, signature verification operation of the signature information is performed, and after the passing of the signature verification, media files are processed online according to the authority of the user. According to the method and the system, identity authentication and data encryption operation of dynamic digital right safety protection can be performed by employing the identification password public and private key pairs of the user, the client does not adopt a digital certificate, the problem of complicated management of the digital certificates is avoided, and the operation speed of the system is increased.

Description

technical field [0001] The invention relates to the technical field of digital copyright protection, in particular to a method and system for dynamic digital copyright protection based on identification passwords. Background technique [0002] DRM (Digital Right Management, digital copyright protection) is currently the main means of copyright protection for digital works disseminated in the network. DRM is a system solution including information security technology, which protects the rights of digital information creators and owners while ensuring the normal use of digital information (such as digital images, audio, video, etc.) by legal and authorized users. Copyright information, obtain legitimate income based on copyright information, and can identify the copyright ownership of digital information and the authenticity of copyright information when copyright is infringed. [0003] At present, the existing DRM security schemes are mainly based on PKI (PublicKeyInfrastruc...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing DRM security schemes are mainly based on PKI (PublicKeyInfrastructure, public key infrastructure) technology and digital certificates. The main problems of these existing DRM security schemes are: the management of digital certificates is cumbersome, the system operation cost is high; the system load is heavy, Especially in the case of a large number of users, it will directly cause the system to run slowly and affect the viewing effect of users

Although the idea of ​​identity-based encryption is proposed in the public key cryptosystem, there is no effective, provably secure identity-based digital copyright protection scheme at present.

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