Trust Evaluation Based Security Solution in Ad Hoc
, Peng Zhang
, Teemupekka Virtanen
Nokia Research Center, Nokia Group, Helsinki, Finland
Nokia Venture Organization, Nokia Group, Helsinki, Finland
Helsinki University of Technology, Finland
Ad hoc networks are new paradigm of networks offering unrestricted
mobility without any underlying infrastructure. The ad hoc networks have
salient characteristics that are totally different from conventional networks.
These cause extra challenges on security. In an ad hoc network, each node
should not trust any peer. However, traditional cryptographic solution is useless
against threats from internal compromised nodes. Thus, new mechanisms are
needed to provide effective security solution for the ad hoc networks. In this
paper, a trust evaluation based security solution is proposed to provide effective
security decision on data protection, secure routing and other network activities.
Logical and computational trust analysis and evaluation are deployed among
network nodes. Each node's evaluation of trust on other nodes should be based
on serious study and inference from such trust factors as experience statistics,
data value, intrusion detection result, and references of other nodes, as well as
node owner's preference and policy. In order to prove the applicability of the
proposed solution, authors further present a routing protocol and analyze its
security over several active attacks.
: trust, security, ad hoc networks
Ad hoc networks are new paradigm of networks offering unrestricted mobility
without any underlying infrastructure. An ad hoc network is a collection of
autonomous nodes or terminals that communicate with each other by forming a multi-
hop radio network and maintaining connectivity in a decentralized manner. Each node
functions as both a host and a router. More critically, the network topology is in
general dynamic, because the connectivity among the nodes may vary with time due
to node departures, new node arrivals, and the possibility of having mobile nodes.
There are two major types of wireless ad hoc networks: Mobile Ad Hoc Networks
(MANETs) and Smart Sensor Networks (SSNs) . In this paper, our discussion will