Abstract
Providing security and privacy to wireless sensor nodes (WSNs) is very challenging, due to the heterogeneity of sensor nodes and their limited capabilities in terms of energy, processing power and memory. The applications for these systems run in a myriad of sensors with different low-level programming abstractions, limited capabilities and different routing protocols. This means that applications for WSNs need mechanisms for self-adaptation and for self-protection based on the dynamic adaptation of the algorithms used to provide security. Dynamic software product lines (DSPLs) allow managing both variability and dynamic software adaptation, so they can be considered a key technology in successfully developing self-protected WSN applications. In this paper, we propose a self-protection solution for WSNs based on the combination of the INTER-TRUST security framework (a solution for the dynamic negotiation and deployment of security policies) and the FamiWare middleware (a DSPL approach to automatically configure and reconfigure instances of a middleware for WSNs). We evaluate our approach using a case study from the intelligent transportation system domain.
Highlights
Recent advances in wireless communication technologies and applications have enabled the large-scale deployment of wireless sensor networks (WSNs)
The goal of the experiments presented is three-fold: (1) they quantify the memory footprint used and the spent battery by the new security self-adaptation mechanism of FamiWare; (2) they evaluate the scalability of FamiWare, regarding the number of security policies and reconfiguration plans; and (3) they calculate the overhead produced by the security self-adaptation mechanism, measuring the latency, since the new configuration model has been generated and the reconfiguration has been accomplished
By combining the contributions of the FamiWare family of middleware and the contributions of the INTER-TRUST security framework, in this paper, we have presented an approach for building self-protected WSNs
Summary
Recent advances in wireless communication technologies and applications have enabled the large-scale deployment of wireless sensor networks (WSNs). This section introduces the background required to understand the approach presented in this paper It is basically about dynamic software product lines and dynamic security frameworks. DSPLs use a variability model to specify the variation points that can be dynamically modified. In DSPLs, a variability model configuration is the set of features currently bound at runtime that represents a particular product of the SPL. In this way, dynamic reconfiguration is defined in terms of replacing the current variability model configuration with a new configuration in which the variation points have been re-bound to adapt them to a context change. Using the CVL approach, we automatically generate both the initial configuration and the successive adapted configurations
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