本文選題：可信網(wǎng)絡 + 信任模型　； 參考：《南京郵電大學》2014年碩士論文

【摘要】：可信網(wǎng)絡要求網(wǎng)絡中的行為和結果是可預期、可控制的。評估網(wǎng)絡節(jié)點行為可信性的動態(tài)信任模型是可信網(wǎng)絡研究的核心內(nèi)容。網(wǎng)絡中的惡意行為復雜多樣，如何評估與規(guī)范網(wǎng)絡節(jié)點的行為、降低惡意行為的影響并保障網(wǎng)絡穩(wěn)定地運行以及模型本身的可實現(xiàn)性等都是動態(tài)信任模型需要解決的問題。 為此本文設計并實現(xiàn)了一種基于多維行為信任和決策屬性的分布式動態(tài)信任量化模型。該模型針對網(wǎng)絡節(jié)點不同的行為分別進行考察，評估節(jié)點的交易行為信任與反饋行為信任；同時根據(jù)信任的來源考慮信任的不同組成因素，以直接信任、反饋信任與激勵函數(shù)三種決策屬性綜合計算節(jié)點的信任度，根據(jù)各屬性的證據(jù)充分程度與對總體的貢獻動態(tài)確定權值。多維行為信任和決策屬性能夠更準確地評估節(jié)點行為的可信性，有效降低惡意行為對網(wǎng)絡的影響。 同時本文還設計了基于具有惡意懲罰與老化時間的信任向量計算直接信任度和構造反饋信任樹并基于反饋信任樹計算反饋信任度的算法，提出了一種具有較高安全性和較低流量開銷的加密反饋信任傳遞機制，，設計了分布式環(huán)境下節(jié)點的本地存儲結構，解決了傳統(tǒng)動態(tài)信任模型對模型可實現(xiàn)性研究不足的問題。 最后通過仿真實驗驗證了模型的有效性，并對模型的優(yōu)缺點進行了比較與分析。
[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.
【學位授予單位】：南京郵電大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP393.08

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