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Poster: Toward a Theoretical Privacy Framework for Electronic Locks in Context of Home Security Monitoring System for Clouds of Things

Current popular schemes e.g. homomorphic cryptography are extensively deployed to preserve privacy in a limited level but without a formal privacy model, we can neither offer privacy guarantee nor quantify the privacy loss. In this paper, we raise a few privacy-related questions, one after another, with the e-Lock state changes in a smart home as an example. In a novel privacy framework we proposed, the questions are partially addressed with the utilization of a set of theoretical models e.g. hidden markov model, differential privacy and information flow with belief. Since our paper is still at its start phase, we plan to accomplish the framework and wish can inspire colleagues' interests in this area.