Enhanced Security in Mobile Adhoc Networks by using ECC Cryptography Technique

A mobile ad hoc network (MANET) is a special type of wireless network consisting of a collection of nodes capable to communicate with each other without help from a network infrastructure. Due to its nature, providing security in this network is challenging. Because MANET has no any pre-existing fixed structure and mobile nodes sends packets to the destination nodes directsly or via the neighbouring nodes, it is of potential security concern because neighbour nodes cannot be trusted, While the routing aspects of mobile ad hoc networks (MANETs) are already well understood, and the research activities about security in MANETs are still at their beginning. In this paper, we propose an effective security Ad hoc On Demand Distance Vector (AODV) algorithm called ES-AODV to enhance the data security. And also we implement a technique using Elliptic Curve Cryptography (ECC) algorithm where the information is secured while passing through the nodes. Only the destination would be able to decrypt the data. This ensures that the finally received data has integrity. This protocol is energy efficient and uses low memory as we use the concept of Elliptic Curve Cryptography (ECC). Finally we analysing performance comparison of AOMDV with AODV using ns-2 simulations. Simulation results show that our algorithm provides a reasonably good level of security and performance