基于多维行为信任和决策属性的可信网络动态信任模型研究

发布时间：2018-06-20 17:30

本文选题：可信网络 + 信任模型　；参考：《南京邮电大学》2014年硕士论文

【摘要】：可信网络要求网络中的行为和结果是可预期、可控制的。评估网络节点行为可信性的动态信任模型是可信网络研究的核心内容。网络中的恶意行为复杂多样，如何评估与规范网络节点的行为、降低恶意行为的影响并保障网络稳定地运行以及模型本身的可实现性等都是动态信任模型需要解决的问题。为此本文设计并实现了一种基于多维行为信任和决策属性的分布式动态信任量化模型。该模型针对网络节点不同的行为分别进行考察，评估节点的交易行为信任与反馈行为信任；同时根据信任的来源考虑信任的不同组成因素，以直接信任、反馈信任与激励函数三种决策属性综合计算节点的信任度，根据各属性的证据充分程度与对总体的贡献动态确定权值。多维行为信任和决策属性能够更准确地评估节点行为的可信性，有效降低恶意行为对网络的影响。同时本文还设计了基于具有恶意惩罚与老化时间的信任向量计算直接信任度和构造反馈信任树并基于反馈信任树计算反馈信任度的算法，提出了一种具有较高安全性和较低流量开销的加密反馈信任传递机制，，设计了分布式环境下节点的本地存储结构，解决了传统动态信任模型对模型可实现性研究不足的问题。最后通过仿真实验验证了模型的有效性，并对模型的优缺点进行了比较与分析。
[Abstract]:The trusted network requires that the behavior and results in the network are predictable and controllable. The dynamic trust model for evaluating the trustworthiness of network nodes is the core content of the research of the trusted network. The malicious behavior in the network is complex, how to evaluate and standardize the behavior of network nodes, reduce the impact of malicious behavior and ensure the stable operation of the network. And the realization of the model itself are all problems that need to be solved in the dynamic trust model.
This paper designs and implements a distributed dynamic trust quantization model based on multidimensional behavior trust and decision attributes. This model examines the behavior of nodes in different behaviors, estimates the trust of the transaction behavior and feedback behavior trust, and considers the different components of trust according to the source of trust. The trust, feedback trust and incentive function are three kinds of decision attributes to calculate the trust degree of the nodes. According to the sufficient degree of evidence of each attribute and the contribution to the overall contribution, multidimensional behavior trust and decision attributes can more accurately assess the credibility of the behavior of nodes and reduce the impact of malicious behavior on the network.
At the same time, the algorithm based on the direct trust of trust vector calculation with malicious punishment and aging time, the construction of the feedback trust tree and the feedback trust tree based on the feedback trust tree are designed, and a transmission mechanism with high security and low traffic cost is proposed, and a distributed environment is designed. The local storage structure of the point solves the problem of the lack of research on the feasibility of the traditional dynamic trust model.
Finally, the validity of the model is verified by simulation experiments, and the advantages and disadvantages of the model are compared and analyzed.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.08

【相似文献】