期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2014
卷号：5
期号：2
页码：1738-1743
出版社：TechScience Publications
摘要：In most existing trust evaluation studies, a single value is computed based on the ratings given to a service provider to indicate the current trust level. In MANETs, multicast group members frequently change due to node mobility; therefore, supporting secure authentication and authorization in a multicast MANET is more critical than that in a wired network with a centralized certificate authentication (CA) server. This paper thus proposes a twostep secure authentication approach for multicast MANETs. In particular, we examine routing attacks, such as link spoofing and colluding misrelay attacks, as well as countermeasures against such attacks in existing MANET protocols. We seek to combine the notions of “social trust” derived from social networks with “quality-of-service (QoS) trust” derived from information and communication networks to obtain a composite trust metric. A distributed scheme is designed to acquire, maintain, and update trust records associated with the behaviors of nodes’ forwarding packets and the behaviors of making recommendations about other nodes. Simulations show that the proposed trust evaluation system can significantly improve the network throughput as well as effectively detect malicious behaviors in ad hoc networks.
关键词：Ad hoc networks; Security; Trust modeling and;evaluation.
