Time-varying keys for encryption in WSNs: IEEE CNS 17 poster
Elena Uchiteleva, Abdallah A. Shami, Ahmed Refaey · 2017
This work presents a novel scheme which reinforces strength of encryption keys in low-power and low-rate wireless sensor networks (WSNs). The proposed algorithm utilizes pseudo-random features of physical layer (PHY) of the communication stack to enable time-evolution of network keys increasing their complexity and reliability. This scalable and light-weight scheme is suitable for large networks of memory- and energy-restricted sensing devices and is aimed at enhancing security strength during broadcasting. Our preliminary results demonstrate that generated time-varying key sequences show no correlation or linear dependencies between instances and are resilient to intelligent brute-force attacks.