Secure and Efficient WSN Communication Infrastructure

Efficient wireless communication in conjunction with high level security provision concerning highly challenging medical applications is of paramount importance. Such requirements however comprise multifaceted challenges for CyberPhysical systems relying on state of the art WSN communication technologies. In that respect this chapter highlights two critical relative aspects as follows: The first aspect focuses on the sensor devices. Based on identified and presented requirements various security countermeasures are analyzed offering adequate security level while taking into consideration specific requirements such as low resource availability and low cost as well as the fact that sensors are miniaturized devices operating for long time periods. The second aspect addresses security concerning the wireless transmission with respect to performance and resource overhead. This chapter focuses on two different wireless communication technologies, comprising probably the most vulnerable part of a CPS platform. It is noted that the presented information effectively comprise the main outcome following an extensive evaluation based on both simulation as well as real platform measurements conducted in the context of the ARMOR FP7 project. Last but not least, a novel ultra low power hardware encryption module design is presented in order to further enhance the security level provided by the system while minimizing resource wastage.

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