A new authentication scheme for sip registration in a manet environment

摘要

© Technomathematics Research Foundation.SIP identity theft is a big issue which can be exploited by attackers to gain control of network resources and conduct fraud using a stolen legitimate identity. This concern is more challenging when it comes to MANET (Mobile Ad-hoc Network) which is more threatened by eavesdropping and impersonation due to its dynamic and wireless open environment. In this paper, we propose a new authentication scheme as a part of SIP Registration to address this problem. This is achieved by the use of smart antennas and hash chaining during password provisioning phase. We propose that each SIP node provisions a set of her well reputed neighbors (which are determined by some Reputation based system) with a one-time password and the associated hash function. These neighbors with good reputation will act later as the node's witnesses to prove the SIP Identity to the Registrar during the SIP Registration.