Mobile Ad hoc Networks are wireless infrastructure less networks can be easily formed or deployed due to its simple infrastructure. Security has become a primary concern in order to provide protected communication between mobile nodes in a hostile environment. The main objective of this work is to enhance the performance of the network by securing the data and to minimize the malicious nodes which disturb the stream of the network. Securing data is a critical task which can be achieved by cryptographic algorithms and disturbance detection plays as a crucial ingredient in any comprehensive security solution to address the threats. Hence a Novel Cryptographic Algorithm with a new Disturbance Detection System (DDS) has been proposed for Mobile Adhoc Networks. This method prevents the outside attacks to obtain any information from any data exchange in network and also use promiscuous mode of working along with rating and collaborative decision making based on multiple threshold values. The proposed algorithm was implemented and simulated in the Glomosim and the result analysis proved that the performance of the network is increased.

An ad hoc network is a mobile wireless network that has no fixed access point or centralized infrastructure. Each node in the network functions as a mobile router of data packets for other nodes and should maintain the network routes for long standing which is not possible due to limited battery source. Also, due to node mobility, link failures in such networks are very frequent and render certain standard protocols inefficient resulting in wastage of power and loss in throughput. The power consumption is an important issue with the goal to maintain the network lives for long by consuming less power. The power consumption can be achieved by modifying algorithms such as cryptographic algorithms,Routing algorithms, Multicast Algorithms, Energy Efficient Algorithms and Power Consumption Techniques in High Performance Computing, Compression and decompression algorithms, minimizing link failure algorithms, and by power control algorithms. In this work, we have proposed a new algorithm for minimization of power consumption in Ad hoc networks. The performance of the proposed model is analyzed and it is observed that, information could be sent with security consuminglesscomputational power, thereby increasing the battery life.