On Secure Communication in Sensor Networks Under q-Composite Key Predistribution With Unreliable Links
Jun Zhao · IEEE Transactions on Communications · 2017
Many applications of wireless sensor networks (WSNs) require deploying sensors in hostile environments, where an adversary may eavesdrop communications. To secure communications in WSNs, the$q$-composite key predistribution scheme has been proposed in the literature. In this paper, we investigate secure$k$-connectivity in WSNs operating under the$q$-composite scheme, in consideration of the unreliability of wireless links. Secure$k$-connectivity ensures that any two sensors can find a path in between for secure communication, even when$k-1$sensors fail. We present conditions on how to set the network parameters such that the network has secure$k$-connectivity asymptotically almost surely. The result is given in the form of a sharp zero–one law.