LocTrust: A local and global consensus-combined trust model in MANETs

【Author】 Zhou, Shuai; Zhang, Ge; Meng, Xianfu

【Source】PEER-TO-PEER NETWORKING AND APPLICATIONS

【影响因子】3.488

【Abstract】With the increase of malicious peers, how to ensure the network availability has been an important research topic in recent years, especially for the mobile ad hoc network (MANET) due to its inherent nature of peers' strong mobility and short wireless transmission range. Usually, the trust models are employed in MANETs for guaranteeing the transactions' success, where the peers' mobility is handled by either periodically broadcasting Hello messages or constructing multi-layered network structure. However, such trust models would largely increase the communication complexity. The consensus mechanism used in Blockchain gives us a hint to establish a consensus-based trust model in MANETs. To reduce the communication complexity, we use the super peer-based network structure as the application scenario of our trust model, LocTrust, based on which we propose a local consensus algorithm and a global consensus algorithm for different transacting cases. Also, we use the discrete trust expressions to further improve the LocTrust model's availability. To evaluate the performance, we took a file sharing system as the application scenario of the trust model, where the parameters of the simulation area size, the wireless transmission range, the number of files and the number of peers are employed. Besides, four types of peers are used to simulate the real-world environments, including normal peer (NP), completely malicious peer (CMP), randomly malicious peer (RMP) and feedback malicious peer (FMP). Also, in the simulations, NP:CMP:RMP:FMP is set to 65:15:10:10. The simulation results showed that the LocTrust model could both improve the resource search success rate and reduce the communication complexity under the super peer-based MANET structure.

【Keywords】Mobile ad hoc network (MANET); Trust model; Consensus; Local and global; Super peer-based MANET structure

【发表时间】

【收录时间】2022-01-01

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