本文選題：車載自組織網(wǎng)絡(luò) + 安全認(rèn)證��； 參考：《安徽大學(xué)》2017年碩士論文

【摘要】：隨著現(xiàn)代社會車輛的普及,停車?yán)щy、交通堵塞、交通事故等一系列交通問題頻繁發(fā)生。由此,交通管理,安全駕駛和交通信息交換問題引起了越來越多的關(guān)注。車載自組織網(wǎng)絡(luò)(Vehicle Ad-hoc Networks,VANETs)作為智能交通系統(tǒng)的重要組成部分被認(rèn)為是解決或緩解現(xiàn)有交通問題的關(guān)鍵。然而VANETs對于現(xiàn)有交通系統(tǒng)來說是一把雙刃劍,其在為人們提供便利的同時,也帶來諸多挑戰(zhàn)。其中,安全與隱私是VANETs能否迅速發(fā)展并走入大規(guī)模應(yīng)用的關(guān)鍵性問題。本研究主要關(guān)注VANETs中的安全認(rèn)證與隱私保護(hù)問題,在對現(xiàn)有VANETs中的安全認(rèn)證技術(shù)和隱私保護(hù)技術(shù)進(jìn)行總結(jié)分析的基礎(chǔ)上,設(shè)計(jì)出適應(yīng)于VANETs環(huán)境特點(diǎn)且滿足安全需求的高效解決方案。本文的主要工作及貢獻(xiàn)如下:1.提出VANETs中一種高效的匿名批認(rèn)證協(xié)議,緩解了現(xiàn)有方案中高計(jì)算開銷和高通信開銷引起的系統(tǒng)性能問題。本文結(jié)合批認(rèn)證和消息可恢復(fù)簽名提出一種高效的認(rèn)證方案,與現(xiàn)有方案不同,本文方案可以使用批認(rèn)證操作同時認(rèn)證多條消息。因此,本文方案可以顯著的縮短總體認(rèn)證時間。同時由于消息可恢復(fù)簽名的使用,所以可以在一定程度上降低傳輸開銷。在安全性證明部分,除了對常見攻擊模型抵抗的分析,如偽裝攻擊、合謀攻擊等。我們還在隨機(jī)預(yù)言模型下證明了本文方案中消息的不可偽造性。最后在理論分析和實(shí)驗(yàn)仿真部分,通過與現(xiàn)有方案對比,展示了本文方案在計(jì)算開銷和通信開銷上的優(yōu)勢,更加具有實(shí)用性。2.針對現(xiàn)有VANETs中Mix-zone方案靈活性低以及隱私保護(hù)力度不夠的問題,提出了一種交通自適應(yīng)的動態(tài)Mix-zone方案來保護(hù)VANETs中車輛用戶的位置隱私。本文提出一種新的交通自適應(yīng)度量方法來評估Mix-zone,并且該度量方法可用于找出最佳Mix-zone。在此基礎(chǔ)上,本文根據(jù)道路網(wǎng)絡(luò)的無向帶權(quán)連通圖提出一種動態(tài)Mix-zone創(chuàng)建方案,該方案允許VANETs系統(tǒng)在車輛請求更換假名時為車輛動態(tài)的創(chuàng)建Mix-zone。最后在性能評估部分,我們使用城市出租車的GPS數(shù)據(jù)來產(chǎn)生車輛的移動軌跡,并對應(yīng)到真實(shí)的城市道路網(wǎng)絡(luò)中。通過真實(shí)車輛移動軌跡數(shù)據(jù)集進(jìn)行實(shí)驗(yàn),展示了本文方案在真實(shí)環(huán)境下對車輛位置隱私保護(hù)的性能。
[Abstract]:With the popularization of vehicles in modern society, a series of traffic problems, such as parking difficulties, traffic congestion and traffic accidents, have occurred frequently. Thus, traffic management, safe driving and traffic information exchange have attracted more and more attention. The Vehicle Ad-hoc Networks (VANETs) is an important part of the intelligent transportation system. It is considered to be the key to solving or alleviating existing traffic problems. However, VANETs is a double-edged sword for existing traffic systems, and it also brings many challenges to the convenience of people. Among them, security and privacy are the key problems of whether VANETs can develop rapidly and enter large-scale applications. This research focuses on VANETs. The problem of security authentication and privacy protection is based on the summary and analysis of the security authentication technology and privacy protection technology in the existing VANETs. This paper designs an efficient solution adapted to the features of the VANETs environment and meets the security requirements. The main work and contributions of this paper are as follows: 1. a highly efficient anonymous batch authentication Association in VANETs is proposed. It alleviates the system performance problems caused by high computing overhead and high communication overhead in existing schemes. This paper proposes an efficient authentication scheme based on batch authentication and message recovery signatures, which is different from existing schemes. This scheme can use batch authentication operations to authenticate multiple messages at the same time. Therefore, this scheme can significantly shorten the total number of messages. In addition to the analysis of the resistance of the common attack models, such as the camouflage attack and the conspiracy attack, we also prove the non Forgability of the message in the random oracle model. The theoretical analysis and experimental simulation part, by comparing with the existing schemes, shows the advantages of this scheme in computing overhead and communication overhead, and more practical.2. is more practical in view of the low flexibility of the Mix-zone scheme in the existing VANETs and the lack of privacy protection. A traffic adaptive dynamic Mix-zone scheme is proposed to protect it. The location privacy of vehicle users in VANETs. This paper proposes a new traffic adaptive measurement method to evaluate the Mix-zone, and this measurement method can be used to find the best Mix-zone. based on it. This paper proposes a dynamic Mix-zone creation scheme based on the undirected connected graph of road network, which allows the VANETs system to be in the vehicle. In order to replace the pseudonym for vehicle dynamic creation Mix-zone. finally in the performance evaluation section, we use the city taxi's GPS data to produce the vehicle movement track, and corresponding to the real urban road network. Through the real vehicle moving trajectory data set experiment, show the location of this scheme in the real environment of vehicle location. The performance of privacy protection.
【學(xué)位授予單位】：安徽大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U463.6;TN929.5;TP309

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