Improved Key Management and Security in Dynamic Wireless Sensor Networks

Wireless sensor networks (WSNs) have been a great hand for many applications, military communication and data handling, monitoring of patient from different locations, the common traffic system is made efficient and traffic flow monitoring are a few among the applications. Suitable encryption methods are required for security and communication. A certificate less-effective key management (CL-EKM) protocol provides a secure communication in dynamic wireless sensor networks. Efficient key update when a node joins or leaves a cluster is supported in CL-EKM. Also provide forward and backward secrecy in node to node communication. Efficient key revocation for compromised nodes helps in minimizing the impact of a node compromise on the security of other nodes or links of communication. A security analysis of this scheme shows that the protocol is effective in resisting various attacks. Implementing CL-EKM in ubuntu OS and simulate it using NS2 (NS2.34) simulator to assess its energy, time, communication performance.