A Subjective Trust Management Model Based on AHP for MANETs

Abstract

Due to the anonymity, self-organization and multi hops routing of nodes in MANETs (mobile ad hoc networks), a network is lack of the identification of nodes' credibility. As a result, the confidentiality and integrity of information in the dissemination process is vulnerable to attacks by malicious nodes, the interactive quality of overall networks is also easily affected. A subjective trust management model for MANETs (AHPStrust) based on Analytic Hierarchy Process is proposed in this paper, which is used to solve these questions, for example, to quantify and evaluate the trustworthiness of nodes, to enhance the networks' ability of trust management decisions and to reduce the harm of malicious nodes. In this paper, we propose the trust evaluation mechanism with detailed influencing factors, and use AHP to successfully construct a fully trust hierarchical model with corresponding mathematical description and derivation rules. Analysis and simulation results show that our model (AHPStrust) is more effective than the existing model (CFStrust) along with 10% proportion of malicious nodes in the network, the satisfactory interaction rate increases by 5%, the proportion of good recommendation increases by 4%, the correct identification rate of nodes' properties increases by 6%.