Diffie-Hellman Technique Extended to Efficient and Simpler Group Key Distribution Protocol

Abstract

Ever since 2-party Diffie-Hellman exchange was first proposed in 1976, there have been efforts to extend its simplicity and elegance to a group setting. Notable solutions have been proposed by michael Steiner Gene Tsudik Waidner(in 1996) and Recently G.P.Biswas was proposed a contributory group key agreement protocol for generation of multiparty key and compared with other protocol and satisfactory results obtained. In this paper an m-party DH key distribution for group (improved group DH) was proposed by modifying G.P.Biswas protocol and we argued that our protocol is optimal with respect to most of the aspects of protocol complexity and also it‟s security discussed.