A Probabilistic Misbehavior Detection Scheme on Trust Establishment in Manets

Adversary detection in MANETs is very useful for scores of applications such as military, satellite, interplanetary and disaster rescue. Selfish antonyms and malicious behaviors represent a serious threat against routing in Mobile Ad-hoc Networks (MANETs). Due to the unique network characteristic, designing a misbehavior detection scheme in MANET is regarded as a great challenge. In this paper, an approach called iBelieve is proposed with a probabilistic misbehavior detection scheme, for secure MANET routing towards efficient trust establishment. The basic idea of iBelieve is to introduce a periodically available Trusted Authority (TA) to judge the node’s behavior based on the collected routing evidences and probabilistically checking. The iBelieve is modeled as an Inspection Game and game theoretical analysis is used for demonstration purpose by setting an appropriate investigation probability, the TA could ensure the security of MANET routing at a reduced cost. To improve the efficiency, detection probability is correlated with a node’s reputation that allows a dynamic detection probability determined by the trust of the users. The extensive analyze is simulated and the results show that the proposed scheme substantiates the effectiveness and efficiency of the system.