Abstract
In Mobile Ad Hoc Networks (MANET), the certificate exchange technique helps the nodes to authenticate themselves with the members in the network before they get joined and starts accessing the network resources. The paths we use for certificate exchange should be secured and reliable. In MANET, the existing routing protocols do not provide security so that an active attacker can alter the control packets which can compromise the routing protocol’s integrity. Also the replay attack occurs when an attacking node listens to packets and then re-broadcast the same packets. In order to overcome these issues, in this paper, we propose a secure multipath routing protocol for certificate exchange which is based on optimized link state routing (OLSR) in MANET. Our proposed approach employs the neighborhood authentication technique that provides integrity. In this technique, the control message such as HELLO and topology control messages are used to construct the routing along with list of shareholder nodes. These control messages assist in attaining and distributing topology information and the generated signatures validates the integrity. Also in order to prevent the replay attacks, the timestamp exchange mechanism is employed. By simulation results we show that the proposed approach offers more security in MANET.
Published Version
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