Abstract-We argue that the traditional notion of trust as a relation among entities, while useful, becomes insufficient for emerging data-centric mobile ad hoc networks. In these systems, setting the data trust level equal to the trust level of the dataproviding entity would ignore system salient features, rendering applications ineffective and systems inflexible. This would be even more so if their operation is ephemeral, i.e., characterized by short-lived associations in volatile environments. In this paper, we address this challenge by extending the traditional notion of trust to data-centric trust: trustworthiness attributed to nodereported data per se. We propose a framework for data-centric trust establishment: First, trust in each individual piece of data is computed; then multiple, related but possibly contradictory, data are combined; finally, their validity is inferred by a decision component based on one of several evidence evaluation techniques. We consider and evaluate an instantiation of our framework in vehicular networks as a case study. Our simulation results show that our scheme is highly resilient to attackers and converges stably to the correct decision.
The concept of data centric trust in volatile environments, such as ad hoc networks, was introduced to evaluate the node trust based on the data reported by it REF .
On Data-Centric Trust Establishment in Ephemeral Ad Hoc Networks
IEEE INFOCOM 2008 - The 27th Conference on Computer Communications
IEEE INFOCOM 2008 - The 27th Conference on Computer Communications
Computer Science