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车载自组织网络是一个典型的开放式分布系统,其网络构成具有高度动态性和很强的临时性.这些特性导致车辆与合作节点之间缺乏相互了解与信任,并且可能面临各类攻击的威胁.针对上述问题,提出在VANET中建立面向应用的车辆节点声誉模型(简称VASRep),用于量化评估节点的声誉.VASRep充分融合车辆节点上丰富的数据类型,使得声誉数据更加准确地表现出节点的可信程度;VASRep依靠权威单元对节点进行评价的方法更好地适应高移动性的VANET环境.通过分析及仿真表明,VASRep较现有模型在性能表现、遏制更广泛类型的恶意节点攻击的能力等方面都有较大的提高.
In-vehicle Ad Hoc Network is a typical open distributed system whose network structure is highly dynamic and has strong temporality, which leads to the lack of mutual understanding and trust between vehicles and cooperative nodes and may face various types of attacks In order to solve the above problems, this paper proposes to establish an application-oriented vehicle node reputation model (referred to as VASRep) in VANET to quantify the reputation of nodes.VASRep fully integrates the rich data types on the vehicle nodes to make the reputation data more accurately represent the nodes VASRep relies on the evaluation of nodes by authoritative units to better adapt to the highly mobile VANET environment.Through the analysis and simulation, VASRep shows that the performance of VASRep is better than the existing models in deterring the attack of a wider range of malicious nodes Ability and other aspects have greatly improved.