Yanjun Hao

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This paper analyses the requirements of file protection. It proposes an improved role-based access control model, which is based on the analysis of shortcomings of traditional RBAC model. This model improves the traditional RBAC model, and importes the concept of user group and object role, also presentes the principal authorized the users and the roles.(More)
One of the threats to watermarking security is unauthorized removal. In this paper, a framework based on extended Trusted Computer Platform to solve this problem was presented. Using Trusted Computing Platform could enhance the security of watermarking detection. The TPM as a supervisor that control the watermark detection program and only the legal one can(More)
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