A NOVEL CRYPTOGRAPHICAL SCHEME FOR MOBILE AD-HOC NETWORK SECURITY

Security in Mobile Ad hoc Network (MANET) is very vital issue. Because of dynamic topology and mobility of nodes, MANET’s are more vulnerable to security attacks than conventional wired and wireless network. Ad hoc network, infrastructure is not required for establishing communication. Various security mechanisms have been proposed, widely used, and proven to be effective in wired networks, but no single mechanism provides all the services required in a MANET.In this paper we have proposed an innovative and secured, ACS (address based cryptography scheme) as a combination of Ad- hoc node address and public/Private key cryptography. ACS is a certificate less public key cryptography solution which empowers efficient network-wide secure key update via a single broadcast message. It also provides general information about how to choose the secret key sharing parameters used with public key cryptography to meet desirable levels of security and authentication. Thus, it eliminates the need for certificate-based authenticated public-key distribution.