Smartphones have become the pervasive personal computing platform. Recent years thus have witnessed exponential growth in research and development for secure and usable authentication schemes for smartphones. Several explicit (e.g., PIN-based) and/or implicit (e.g., biometrics-based) authentication methods have been designed and published in the literature. In fact, some of them have been embedded in commercial mobile products as well. However, the published studies report only the brighter side of the proposed scheme(s), e.g., higher accuracy attained by the proposed mechanism.
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MQTT is a widely-used general purpose IoT application layer protocol, usable in both constrained and powerful devices, which coordinates data exchanges through a publish/subscribe approach. In this paper we propose a methodology to increase the security of the MQTT protocol, by including Usage Control in its operative workflow. The inclusion of Usage Control enables a fine-grained dynamic control of the rights of subscribers to access data and data-streams over time, by monitoring mutable attributes related to the subscriber, the environment or data itself.
Technische Universitaet Darmstadt