CL-EKM Protocol for Secure Communication in Dynamic Wireless Sensor Networks

Abstract

Recently, wireless sensor networks (WSNs) have been deployed for a wide variety of applications, including military sensing and tracking, patient status monitoring, traffic flow monitoring, where sensory devices often move between different locations. Securing data and communications requires suitable encryption key protocols. In this paper, we propose a certificate less-effective key management (CL-EKM) protocol for secure communication in dynamic WSNs characterized by node mobility. The CL-EKM supports efficient key updates when a node leaves or joins a cluster and ensures forward and backward key secrecy. The protocol also supports efficient key revocation for compromised nodes and minimizes the impact of a node compromise on the security of other communication links. A security analysis of our scheme shows that our protocol is effective in defending against various attacks. We implement CL-EKM scheme and simulate it using a simulator to assess its time, energy, communication, and memory performance.

In this paper, we present a CL-EKM scheme for dynamic WSNs. In cryptography CL-PKC, the user’s full private key is a combination of a partial private key generated by a key generation center (KGC) and the user’s own secret value..