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Abstract: In this paper, we develop a trust based security protocol based on a crosslayer approach which attains confidentiality and authentication of packets inboth routing and link layers of MANETs. In the first phase of the protocol, wedesign a trust based packet forwarding scheme for detecting and isolating themalicious nodes using the routing layer information. It uses trust values tofavor packet forwarding by maintaining a trust counter for each node. A node ispunished or rewarded by decreasing or increasing the trust counter. If thetrust counter value falls below a trust threshold, the correspondingintermediate node is marked as malicious. In the next phase of the protocol, weprovide link layer security using the CBCX mode of authentication andencryption. By simulation results, we show that the proposed cross layersecurity protocol achieves high packet delivery ratio while attaining low delayand overhead.



Autor: A. Rajaram, Dr. S. Palaniswami

Fuente: https://arxiv.org/



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