Digital content trusted usage control method based on cloud computing

Abstract

The invention discloses a digital content trusted usage control method based on cloud computing. The system framework comprises a multimedia server, a mobile terminal, a verification agent server, a certificate and license server, an integrity measurement reference and security policy database and a trust measurement log, wherein the mobile terminal uses the multimedia digital content on the multimedia server through a graphical user interface of a DRM (digital rights management) controller; a multimedia server platform runs the DRM controller and performs usage control on the DRM controller through a DRM license; the mobile terminal and the multimedia server determine a verification agent through negotiation; and by adopting a remote proof method and a bidirectional integrity verification security protocol, which support the verification agent, the bidirectional trust relationship between the multimedia content provider and the terminal user is guaranteed, and the secrete privacy data on the terminal equipment of the user is protected as well. In the invention, as the DRM controller is configured on the multimedia server, the possibility of malicious attack such as breaking, tampering and the like, performed by an illegal user, is avoided.

Description

technical field [0001] The present invention relates to the field of Internet technologies, in particular to a digital rights management (Digital Rights Management, DRM)-oriented and cloud computing-based trusted use control method for digital content. Background technique [0002] Usage Control (UCON, Chinese name is "Usage Control") is a basic access control framework that can be used for DRM applications. It integrates three basic components: Authorization, Obligation and Condition. Known as UCON ABC . Under the research of Sandhu et al., this framework is regarded as the next-generation access control architecture, which has continuous access control characteristics, and is easy to describe the dynamic changes of entity attributes during resource usage, and is suitable for digital rights management application scenarios [Document: Park J, Sandhu R. The UCON ABC Usage Control Model [J]. ACM Transactions on Information and System Security, 2004, 7( 1): 128- 174.]. at ...

AI Technical Summary

Problems solved by technology

[0005] As the core component of digital copyright protection, the existing DRM controller is mainly located on the user terminal equipment, and still faces the possibility of malicious attacks such as cracking and tampering by illegal users; and although the existing DRM controller strengthens the "location constraint" , that is, to limit the space used by digital content, but also to the leakage of confidential privacy data and platform configuration information on the terminal device to users, causing privacy protection issues

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