移动自组网中一种基于分簇的信任评估方案

Cluster-Based Trust Evaluation Scheme in an Ad Hoc Network

移动自组网中信任评估方案主要用来防止网络中不良行为节点的安全威胁,本文提出一种基于分簇的信任评估方案。节点通过参考簇首发放的信任值证书可以对陌生节点进行准确有效的信任评估,并给出了该方案所涉及的信任评估公式以及簇的形成与管理的部分具体措施。它克服了移动自组网内传统信任评估方案中陌生节点间受限的信息交流的问题,减少了所需的存储空间,最后针对移动自组网部分安全问题给出了方案分析。

The important intent of the trust evaluation scheme is to resist the secure risk of misbehavior of node in an ad hoc network, and a cluster-based trust evaluation scheme is proposed in this thesis. The head issues a trust value certificate that can be referred to by its non-neighbor nodes. In this way, an evaluation of an unfamiliar node＇s trust can be done very efficiently and precisely. In this paper, we present a trust evaluation metric using this scheme and some operations for forming and managing a cluster, In contrast to the traditional schemes, it overcomes the limited information about unfamiliar nodes and reduces the required memory space. An analysis of the proposed scheme over some security problems is also presented.