A Method for Trusted Usage Control over Digital Contents Based on Cloud Computing

Digital Rights Management (DRM) of multimedia contents in the open network environment is a hot research spot in recent years, and DRM controller in client has been facing versatile attacks, such as break and alteration. Based on cloud computing and remote certification, this paper proposed a usage control architecture and bidirectional integrality verification security protocol of multimedia digital contents in cloud environment. DRM controller is set in cloud multimedia server by as a service, and user calls DRM controlling function through client GUI. By comparisons and analyses on the schemes available, the novel approach realizes enhanced secure, trusted and controllable digital rights protection mechanism, in combination with trusted computing enabled high security terminal platforms, ensures bidirectional trust relation between the multimedia contents providers and the end users, and meanwhile satisfies the basic privacy protection and security requirement of the user end platform configuration.

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