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Secured Right Angled or Ant Search Protocol for Reducing Congestion Effects and Detecting Malicious Node in Mobile Ad hoc Networks by Multipath Routing

Author(s): S Santhosh Baboo | V J Chakravarthy

Journal: International Journal of Computer Science and Information Security
ISSN 1947-5500

Volume: 9;
Issue: 6;
Start page: 275;
Date: 2011;
Original page

Keywords: IJCSIS | call for paper | journal computer science | research | google scholar | IEEE | Scirus | download | ArXiV | library | information security | internet | peer review | scribd | docstoc | cornell university | archive | Journal of Computing | DOAJ | Open Access | June 2011 | Volume 9 | No. 6 | Impact Factor | engineering | international | proQuest | computing | computer | technology

In this paper, we develop a security based protocol using Biased Geographical – Ant Search multipath routing approach which attains confidentiality and authentication of packets in both routing and link layers of MANETs. In first phase we developed a new method for routing the packets from source to destination using right angled geographical routing techniques and shortest path by ant search method to reduce congestion effects. Secondly we proposed a protocol called SRAOA (Secured Right Angled or Ant Search) an on-demand routing protocol. Thirdly, we added security to our proposed protocol using MD 5 (digest algorithm) which provides link level security for the packets transmission between source and destination and for detecting and isolating malicious nodes using certificate generation for the nodes which are in the parent network. In the next phase of the protocol, we did encryption and decryption for authentication, we used RSA algorithm. The performance of our SRAOA protocol is compared / validated with some prominent routing protocols for mobile ad hoc networks, in the presence of malicious node in the simulation environment, namely Ad hoc On Demand Distance vector (AODV) and Ad hoc On-demand Multipath Distance Vector (AOMDV), DSR (Dynamic Source Routing), DSDV (Destination Sequenced Distance Vector. We have chosen four performance metrics, such as Average Delay, Packet Delivery Ratio, Routing Load, and Throughput. We did simulation for the protocol scheme in NS-2. Simulation results show that RAOA achieves the fairness throughput, high packet delivery attaining low delay and overhead in the presence of malicious nodes.
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