一種基于服務(wù)期望的P2P動態(tài)信任模型
發(fā)布時間:2018-08-27 15:57
【摘要】:為解決現(xiàn)有信任模型在節(jié)點行為改變時動態(tài)適應(yīng)能力不足的問題,以及更好地應(yīng)對網(wǎng)絡(luò)中多樣化的惡意攻擊行為,提出一種P2P動態(tài)信任模型。引入能力評價、相似度、反饋可信度、服務(wù)期望、近期信任和歷史信任等參數(shù)計算節(jié)點信任度,并借鑒計算機網(wǎng)絡(luò)中擁塞控制思想緩慢上升、快速下降的原則,在反饋可信度的計算過程中加入獎懲機制,通過懲罰因子和時間衰減函數(shù)動態(tài)調(diào)節(jié)上述參數(shù),提高信任模型的動態(tài)適應(yīng)和抗攻擊能力。實驗結(jié)果表明,該模型能夠真實地模擬現(xiàn)實信任關(guān)系,具有更好的動態(tài)適應(yīng)能力,并可有效地抵御惡意節(jié)點威脅。
[Abstract]:A P2P dynamic trust model is proposed to solve the problem of insufficient dynamic adaptability of existing trust models when the node behavior changes and to better deal with various malicious attacks in the network. Ability evaluation, similarity, feedback credibility, service expectation, recent trust and historical trust are introduced to calculate node trust, and the principle of slow rise and rapid decline of congestion control thought in computer network is used for reference. In order to improve the dynamic adaptability and anti-attack ability of the trust model, the reward and punishment mechanism is added to the calculation process of feedback credibility, and the above parameters are dynamically adjusted by the penalty factor and the time attenuation function. The experimental results show that the model can simulate the real trust relationship and has better dynamic adaptability and can effectively resist the threat of malicious nodes.
【作者單位】: 南京郵電大學(xué)計算機學(xué)院;南京郵電大學(xué)江蘇省無線傳感網(wǎng)高技術(shù)研究重點實驗室;
【基金】:國家自然科學(xué)青年基金資助項目“移動計算環(huán)境下新型僵尸網(wǎng)絡(luò)分析與檢測方法研究”(61202353)
【分類號】:TP393.08
[Abstract]:A P2P dynamic trust model is proposed to solve the problem of insufficient dynamic adaptability of existing trust models when the node behavior changes and to better deal with various malicious attacks in the network. Ability evaluation, similarity, feedback credibility, service expectation, recent trust and historical trust are introduced to calculate node trust, and the principle of slow rise and rapid decline of congestion control thought in computer network is used for reference. In order to improve the dynamic adaptability and anti-attack ability of the trust model, the reward and punishment mechanism is added to the calculation process of feedback credibility, and the above parameters are dynamically adjusted by the penalty factor and the time attenuation function. The experimental results show that the model can simulate the real trust relationship and has better dynamic adaptability and can effectively resist the threat of malicious nodes.
【作者單位】: 南京郵電大學(xué)計算機學(xué)院;南京郵電大學(xué)江蘇省無線傳感網(wǎng)高技術(shù)研究重點實驗室;
【基金】:國家自然科學(xué)青年基金資助項目“移動計算環(huán)境下新型僵尸網(wǎng)絡(luò)分析與檢測方法研究”(61202353)
【分類號】:TP393.08
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