Opacity in Internet of Things with Cloud Computing

Zeng, W; Koutny, M; Watson, P

doi:10.1109/SOCA.2015.33

Opacity in Internet of Things with Cloud Computing

Lookup NU author(s): Dr Wen Zeng, Professor Maciej Koutny ORCiD, Professor Paul Watson ORCiD

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Abstract

Internet of Things (IoT) with Cloud Computing (CC) is a new paradigm incorporating a pervasive presence of a wide range of things/objects which can interact with each other and cooperate, creating new services and reaching common goals. This will lead to more intelligent smart environments in a wide range of applications. In this context, protecting the Internet of Things with Cloud Computing (IoTwCC) against interference, including service attacks and viruses, becomes paramount. In this paper, we introduce a transition system representation to capture the information flow in IoTwCCs, and then investigate the opacity of the information flow model. In addition, we introduce a threat model to describe the actions of the system, and propose entropy as a security metrics to quantify the amount of information related to a service that might be exposed to other users or adversaries. It turns out that the opacity of the system is affected by the availability of the services. As a result, the trade-off between opacity and service availability can be analyzed.