SECURING MOBILE AGENTS IN MANET AGAINST ATTACKS USING TRUST
ChandreyeeChowdhury *SarmisthaNeogy
Dept. of Computer Scienceand Engineering Jadavpur University, West Bengal
ABSTRACT
The emerging trend of using mobile agents for mobile adhoc network (MANET) applications intensifies the need for protecting them. Here we propose a distributed trust based framework to protect both the agents and the host platforms (running at the nodes) especially against threats of the underlying environment where agents may get killed or rerouted by visiting hosts. The best way to defend against this situation is to prevent both the hosts and agents from communicating with the malicious ones. In this regard this paper develops a distributed reputation model of MANET using concepts from DempsterShafer theory. The agents (deployed for some purposes like ervice discovery) while roaming in the networkwork collaboratively with the hosts they visit to form a consistent trust view of MANET. An agent may exchange information about suspected nodes with a visiting host. To speed up convergence, information about an unknown node can be solicited from trusted neighborhood. Thus an inactive node, without deploying agents may also get a partial view of the network. The agents can use combination of encryption and digital signature to provide privacy and authentication services. Node mobility and the effect of environmental noise are considered. The results show the robustness of our proposed scheme even in bigger networks.
KEYWORDS
Mobile Agent, Security, Hashcode, Trust, Dempster–Shafer Belief Theory
Originval source Link : http://airccse.org/journal/nsa/1111nsa20.pdf
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