Reliable and fully distributed trust model for mobile ad hoc networks

Abstract

SecurityTrust model Trust graphThreshold cryptography a b s t r a c t A mobile ad hoc network (MANET) is a wireless communication network which does not rely on a pre-existing infrastructure or any centralized management. Securing the exchanges in MANETs is compulsory to guarantee a widespread development of services for this kind of networks. The deployment of any security policy requires the definition of a trust model that defines who trusts who and how. Our work aims to provide a fully distributed trust model for mobile ad hoc networks. In this paper, we propose a fully distributed public key certificate management system based on trust graphs and threshold cryptography. It permits users to issue public key certificates, and to perform authentication via certificates' chains without any centralized management or trusted authorities.Moreover, thanks to the use of threshold cryptography; our system resists against false public keys certification. We perform an overall evaluation of our proposed approach through simulations. The results indicate out performance of our approach while providing effective security.

Secure Clustering in Vehicular Ad Hoc Networks

“…In [16] the problem identified was the creation of the trusted environment by applying the techniques applied on fixed networks security and trust could not be achieved therefore a fully distributed trust based model was proposed in which ad hoc networks generate and distribute a public key without any fixed mode of transmission. A threshold was also included in the public model so that the malicious nodes cannot get the authorized key from the certification authority.…”

“…In [16] a fully distributed public secret sharing key trusted model was applied which aimed to maintain a trust relationship in mobile ad hoc networks and prevented the network from the authorization of a malicious nodes without the involvement of any third party. For achieving the objective threshold cryptography was also included in the network.…”

A Credible Routing Based on a Novel Trust Mechanism in Ad Hoc Networks

“…besides packet forwarding. Omar et al [9] sought to establish a fully distributed trust model based on trust graphs and threshold cryptography.…”

“…It is calculated according to its accumulated observations using the Bayesian inference which adopts Beta distribution. Unlike most trust mechanisms [7][8][9][10][11][12] that focus on trust evaluation without considering performance of the network, we take other two factors (factors of encounter time and mobility) into account. A good network performance can help save nodes' limited resources and prolong the network lifetime, which is very important in MANET.…”

Secure Trust-based Cooperative Communications in Wireless Multi-Hop Networks

“…The legality of these nodes can be guaranteed by the certifications from Certificate Authority (CA). Omar et al introduces a distributed PKI certification system based on Trust Map and Threshold Encryption (Omar, Challal, et al, 2009). Node legality is secured by Certificate Chain.…”