A hybrid trust model based on communication and social trust for vehicular social networks

Abstract

Vehicular social networks are emerging hybrid networks that combine traditional vehicular networks and social networks, with two key types of nodes, that is, vehicles and drivers. Since vehicle behaviors are controlled or influenced by drivers, the trustworthiness of a vehicle node is essentially determined by its own communication behaviors and its driver’s social characteristics. Therefore, human factors should be considered in securing the communication in vehicular social networks. In this article, we propose a hybrid trust model that considers both communication trust and social trust. Within the proposed scheme, we first construct a communication trust model to quantify the trust value based on the interactions between vehicle nodes, and then develop a social trust model to measure the social trust based on the social characteristics of vehicle drivers. Based on these two trust models, we compute the combined trust assessment of a vehicle node in vehicular social networks. Extensive simulations show that the proposed hybrid trust model improves the accuracy in evaluating the trustworthiness of vehicle nodes and the efficiency of communication in vehicular social networks.

VANET Secure Reputation Evaluation & Management Model Based on Double Layer Blockchain

“…According to how trust is calculated, it can be divided into direct trust [27] and a combination of direct and indirect trust [28]. In addition, social metrics [10,29,30] are also added based on driver behavior.…”

“…We use AATMS [15], BTDS [16], and hybrid [29] as the comparison model. Hybrid considers the interaction trust and social trust of the nodes based on the VSN, but does not consider the influence of the historical reputation.…”

Augmenting Vehicular Ad Hoc Network Security and Efficiency with Blockchain: A Probabilistic Identification and Malicious Node Mitigation Strategy

“…Customized Smart Contracts: To cater to the dynamic nature of VANETs, the blockchain platform incorporates smart contracts designed to automate and streamline vehicular processes such as real-time traffic data sharing, automated toll collection, and vehicular status reporting [9]. These smart contracts execute autonomously, with their conditions predefined by consensus among network participants, thereby enhancing trust [78,79] and efficiency within the network. Our blockchain platform is specifically enhanced to handle the extensive throughput demanded by real-time vehicular communication.…”