Secure authentication scheme in wireless networks

Mobile users enjoy seamless roaming over wireless environment. The wireless network is cumbersome and error prone, thus there is a need for a good and strong authentication scheme which should be designed in such a way that it retains the privacy of the user. It should also be capable of providing minimized communication overhead as most of the exchange of messages in wireless network is found to be the exchange of messages meant for authentication. This results in clumsy environment. The proposed scheme brings out the solution for the above mentioned problems, where the authentication procedure consists of only four messages exchanged between home agent, mobile user and foreign agent. Also the light weight authentication scheme with user anonymity is presented. Apart from that other main issues that are to be solved are prevention of fraud, updating of session key periodically, no need of password verification table and single registration of user to home network. It provides security in protecting the password even if the information is disclosed. The proposed scheme deserves the property of protecting the wireless network from various attacks. And the proposed scheme is simple and user friendly.