Implementation of Instant Messaging Toolfor Security Forces

Instant Messaging (IM) is a type of communications service over the Internet that enables individuals to exchange text messages and track availability of a list of users in real-time. The existing instant messaging technology does not provide built-in support for security feature as proposed idea. And also in Battle Field Management System the most commonly used as means of communication is Walky-Talky, which we feel is much unsecured. In this paper we propose a secured instant messaging system using identity-based cryptosystems which provide a strong authentication and secured communication for both IM client to IM server and IM client to IM client.Identity-based cryptography is a type of public-key cryptography in which a publicly known string representing an individual or organization is used as public key. The public key string can be IP address, domain name or email address.