A Comparative Overview of Fuzzy Particle Swarm Optimization based Key Management Technique in Mobile Adhoc Network Environment

Abstract

A mobile ad hoc network (MANET) is a self-organized wireless network where mobile nodes can communicate with each other without the use of any existing network infrastructure or centralized administration. The mobile ad-hoc network is an infrastructure-free and dynamic kind of network. However, security in wireless ad hoc networks is hard to achieve due to the vulnerability of the links, limited physical protection of the nodes, and the absence of a certification authority or centralized management point. Consequently, novel approaches are necessary to address the security problem and to cooperate with the properties of wireless ad hoc network. Similar to other distributed systems, security in wireless ad hoc networks usually relies on the use of different key management mechanisms. The compromise of the node breaks down the whole security system. For its mobility and self-organized features, it is a great challenge to ensure the security of the network. And the basic aspect of providing the security is managing the encrypting keys. The current key management schemes mainly depend on certificates and identity-based key encryption. Schemes based on certificates suffer from huge computational costs of certificates verification while the identity-based schemes lead to key escrow problem. Trust establishment and management are essential for any security framework of MANETs. In this review work, have studied a self-organized key management technique coupled with trusted certificate exchange for mobile ad hoc networks. The studied architecture consists of one coordinator node, servers and normal mobile nodes. The coordinator acts as a mediator for transmitting the message among the servers and mobile nodes. Each node generates its own public/private key pairs using server-signed public keying technique. As a result of multiple independent certifications, the confidence assigned to the certificates is higher.