本文選題：無線傳感器網(wǎng)絡(luò)　切入點：網(wǎng)絡(luò)重編程協(xié)議　出處：《南京航空航天大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來,無線傳感器網(wǎng)絡(luò)(WSNs)在環(huán)境監(jiān)測、國防軍事等多領(lǐng)域得到廣泛應(yīng)用,網(wǎng)絡(luò)重編程技術(shù)作為WSNs的一個必要和關(guān)鍵的服務(wù)也在不斷發(fā)展,但同時也面臨多種安全威脅。針對WSNs重編程面臨的安全問題,學(xué)術(shù)界做了大量的分析與研究。研究成果主要基于重編程協(xié)議Deluge提供安全方法。然而,新一代的重編程協(xié)議Rateless Deluge采用網(wǎng)絡(luò)編碼的方式處理原始數(shù)據(jù)包,傳輸方式的改變使已有的安全方法無法直接應(yīng)用于Rateless Deluge協(xié)議。本文以軍事領(lǐng)域為潛在應(yīng)用場景,圍繞Rateless Deluge存在的安全問題展開研究并提出解決方法,主要工作如下:首先,探討Rateless Deluge的執(zhí)行流程,剖析Rateless Deluge存在的安全問題,并從抗竊聽和抗污染兩個角度給出解決思路。其次,從原始數(shù)據(jù)包與編碼包關(guān)系的角度,改進一種安全網(wǎng)絡(luò)編碼方法得到CHASH方案。CHASH為每個原始數(shù)據(jù)包增加一個冗余位,利用優(yōu)化的同態(tài)散列函數(shù)驗證原始數(shù)據(jù)包散列值與編碼包散列值的關(guān)系,進而驗證編碼包的真實性。再次,將CHASH引入到Rateless Deluge,為協(xié)議增加編碼包的驗證模塊,從而得到SRateless Deluge方法。該方法與現(xiàn)有的SReluge方法相比,可以在譯碼前驗證編碼包的真實性,保障協(xié)議的安全性,并且避免產(chǎn)生譯碼后再進行驗證帶來的開銷。然后,從編碼包本身的角度將頁面摘要機制引入Rateless Deluge,改進原協(xié)議得到KRateless Deluge安全重編程方法。方法計算收到的編碼包摘要值,并與節(jié)點預(yù)存的頁面摘要數(shù)組做對比,從而實現(xiàn)對編碼包的驗證。該方法與SRateless Deluge相比減輕接收方的驗證壓力,且頁面摘要的真實性和散列函數(shù)的抗碰撞性可用于保障驗證的可靠性。最后,對兩種安全重編程方法進行性能仿真。仿真結(jié)果表明,兩種方法不會增加系統(tǒng)的譯碼次數(shù),在引入少量通信開銷的情況下,可以驗證編碼包并檢測污染節(jié)點,有效解決Rateless Deluge的安全問題。
[Abstract]:In recent years, Wireless Sensor Network (WSNs) has been widely used in many fields, such as environmental monitoring, national defense and military affairs. As a necessary and key service of WSNs, network reprogramming technology has been developing. But at the same time, it also faces a variety of security threats. In view of the security problems faced by WSNs reprogramming, the academic circles have done a lot of analysis and research. The research results are mainly based on reprogramming protocol Deluge to provide security methods. However, The new generation of reprogramming protocol Rateless Deluge uses network encoding to process raw data packets. The change of transmission mode makes the existing security methods can not be directly applied to Rateless Deluge protocol. This paper takes the military field as the potential application scenario. The main work of this paper is as follows: firstly, the implementation process of Rateless Deluge is discussed, and the security problems existing in Rateless Deluge are analyzed. Then, from the view of anti-eavesdropping and anti-pollution, the solution is given. Secondly, from the point of view of the relation between the original packet and the coded packet, a secure network coding method is improved to get the CHASH scheme .CHASH adds a redundant bit for each original packet. The optimized homomorphic hash function is used to verify the relationship between the original packet hash value and the encoding packet hash value, and then verify the authenticity of the encoding packet. Thirdly, the CHASH is introduced into the Rateless hash function to add the verification module of the encoding packet to the protocol. Compared with the existing SReluge method, this method can verify the authenticity of the coding packet before decoding, ensure the security of the protocol, and avoid the cost of verification after decoding. From the point of view of the encoding package itself, the page digest mechanism is introduced into Rateless Deluge.To improve the original protocol, the secure reprogramming method of KRateless Deluge is obtained. Compared with SRateless Deluge, the method reduces the verification pressure of the receiver, and the authenticity of the page summary and the anti-collision ability of the hash function can be used to ensure the reliability of the verification. The simulation results show that the two methods can not increase the decoding times of the system, and can be used to verify the coding packets and detect the contaminated nodes when a small amount of communication overhead is introduced. Solve the security problem of Rateless Deluge effectively.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP212.9;TN929.5

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本文編號：1567756