Message Security is the revamp of a simple message into one that is understandable and then retrains forming that message back to its original form. Every new technique provided to safe guard the message communication using cryptography acts as a new wing added to the success of Cryptography. This book is also doing so by providing a new procedure of encryption by adding one more wing to the strength of cryptography. As cryptography is a vital part of message security in every field of communication where there is necessity of securing the message from intruders.

This book is primarily designed to serve as a text book for UG, PG students of Engineering.Network Simulation is an open-source event-driven simulator designed specifically for research in computer communication networks. To scrutinize network performance, researchers can simply exercise an easy-to-use scripting language to configure a network. It is also immense value to professionals who would like to keep abreast of Network Simulation.