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    An access control model for mobile physical objects

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    Access to distributed databases containing tuples collected about mobile physical objects requires information about the objects ’ trajectories. Existing access control models can-not encode this information efficiently. This poses a policy management problem to administrators in real-world supply chains where companies want to protect their goods track-ing data. In this paper we propose a new access control model as an extension to attribute-based access control that allows trajectory-based visibility policies. We prove the se-curity properties of our novel authentication protocol for distributed systems that can supply the decision algorithm with the necessary reliable information using only standard passive RFID tags. As a result companies will be able to improve confidentiality protection and governance of their object tracking data and more trustingly engage in data sharing agreements
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