基于信誉系统对GRID网格Leader选择协议的安全性研究

Security Research of GRID Leader Selection Protocol Based on Reputation System

摘要:

针对GRID路由协议中的网格Leader选择协议,首先运用基于有限状态机的形式化分析方法对它的安全性进行了分析,之后基于现有信誉系统,提出一种基于信誉度的信誉模型。模型包括信誉度计算、信誉管理和信誉决策,依据节点信誉度的变化以及设置的信誉度阈值识别并处理内部恶意节点,保证网络通信的安全可靠。仿真实验表明,该模型能够有效识别出恶意节点,显著提高网络分组投递率,但节点间传输平均时延有所延长,需进一步优化。

Abstract:

In view of the Grid Leader Selection Protocol in GRID routing protocol, first analyzes its security by using the formal analysis method based on finite state machine. Then combined with the existing reputation system, this paper proposes a reputation model based on creditworthiness. The model includes reputation calculation, reputation management and reputation decision. According to the change of the credibility of the nodes and set the credibility threshold to identify and deal with internal malicious nodes, ensure the safe and reliable communication network. Simulation results show that this model can effectively identify malicious nodes and significantly improve the delivery rate of network packets, but the average transmission delay between nodes is prolonged, which needs to be optimized.