Design And Implementation Of Digital Content Protection System Based On Access Control In Mobile Cloud Computing

In recent years,under the background of cloud computing technology promoted and optimized continuously,more and more people rely on mobile client to obtain kinds of network resources and people have accustomed to using smart handheld terminal for digital content transactions,usage and sharing.Therefore,the copyright protection and rights management have become an important factor for mobile cloud digital content development.The research difficult point of mobile cloud computing digital content access control is:how to achieve rights grant and revocation about digital content between mobile devices when mobile device cannot communicate with the center server continually at the moving process.First,authorized users can access data at anywhere and anytime.Second,the right about user access to a file should be authorized or revoked timely.This paper designs an access control mechanism applied to mobile cloud environment,which will make the access control rights accurately granted to users under the mobile cloud computing environment in the digital right management system.At present,the above mechanism has been applied to commercial digital content sharing systems.In this paper,the main research work is as follows.1)We analyze the development of digital content protection technology and give a detailed description of traditional access control mechanisms with their advantages and disadvantages.We focus on the right revocation development apart from the access control mechanism under the cloud computing environment.2)On the basis of above-mentioned study,we design scheme of access control applied to the mobile cloud computing(MCCAC)and buid application model.We also design the ciphertext policy attribute based encryption algorithm for mobile cloud computing(MCC-CP-ABE)environment based on Waters CP-ABE and make security analysis as well as performance analysis.We also analysis the MCCAC scheme in terms of security,access control grainess,computing task,usability and practicality,the result shows that MCCAC meets user's demand.3)We develop the digital right management system under the mobile cloud computing based MCCAC scheme and present development flow from technical plan,system design and development to test step.After deployed online and with the utilization feedback from customers,the system meets users demand.