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Author: 黃昶銘
Chang-Ming Huang
Thesis Title: HASR匿名安全路由協定之模擬實作與效能評估
Simulation Implementation and Performance Evaluation on HASR Protocol
Advisor: 羅乃維
Nai-Wei Lo
Committee: 吳宗成
Tzong-Chen Wu
查士朝
Shi-Cho Cha
Degree: 碩士
Master
Department: 管理學院 - 資訊管理系
Department of Information Management
Thesis Publication Year: 2011
Graduation Academic Year: 99
Language: 英文
Pages: 40
Keywords (in Chinese): 隨意網路匿名安全性需求式路由協定雜湊函數
Keywords (in other languages): Mobile Ad Hoc Network, Anonymity, Security, On-demand routing, Hash function
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無線隨意網路(MANET)是一種不需依賴固定基礎建設的自我組織網路。在無線隨意網路中,兩個節點之間通訊傳遞可能經過多個其他節點,且節點的移動速度會造成網路拓樸的快速改變。基於以上原由,設計出適用於無線隨意網路環境下的路由協定是一項值得探討的研究議題。
在惡意網路環境中,無線隨意網路需要藉助匿名通訊機制以保護行動節點的真實身分及實體位置資訊,使個人隱私不致受到惡意攻擊者所侵害。當隱私資訊弱點存在時,攻擊者便可能發起主動或被動式攻擊,例如封包流量分析、欺騙攻擊與路由維護攻擊等。
近年的研究中,數種匿名安全路由協定已陸續被提出發表。現有的方法絕大多數使用非對稱及對稱式金鑰加密隱私資訊,因而導致極高的加解密運算成本。為解決此問題,一個以雜湊函數為基礎且具有低運算成本優點的需求式匿名安全路由協定,稱為HASR,於2010年被提出。我們在QualNet模擬器上模擬實作HASR協定,並在不同的隨意網路情境下進行模擬實驗,評估HASR與其他金鑰加密式路由協定相比較下的運行效能。


A mobile ad hoc network (MANET) is a self-organizing network which does not require the fixed infrastructures. The communication routes between two nodes in MANET may consist of hops through other nodes and the network topology changes frequently due to node mobility. For these reasons, designing a suitable routing protocol for MANET is an important study issue.
In the hostile environments, mobile ad hoc networks require an anonymous communication mechanism in order to protect the identity and physical location information of the mobile nodes not exposed to the malicious attackers. The adversaries can launch the active or passive attacks such as traffic analysis, spoofing attack and route maintenance attack if the vulnerability of privacy information exists.
In recent years, several anonymous secure routing protocols have been proposed. Most of them used asymmetric and symmetric key cryptography to encrypt privacy information so they commonly have a high computation overhead. To address this problem, a hash-based on-demand anonymous secure routing protocol with low cryptographic cost, called HASR, which is proposed in 2010. We simulate and implement HASR using QualNet under certain mobile ad hoc network scenarios to evaluate its feasibility and performance when comparing it with other key-based routing protocols.

中文摘要 i Abstract ii 致謝 iii Contents iv List of Figures v List of Tables vi Chapter 1 Introduction 1 Chapter 2 Related Works 4 2.1 Symbols and Notations 4 2.2 On-demand Anonymous Secure Routing Protocols 5 2.3 HASR Protocol 6 2.4 ANODR Protocol 10 2.5 QualNet Network Simulator 11 Chapter 3 HASR Implementation on QualNet 13 3.1 Life Cycle of a Network Layer Protocol 13 3.2 RREQ Phase 14 3.3 RREP Phase 17 3.4 DATA Forwarding Phase 19 3.5 RERR Phase 22 3.6 Discussions 24 Chapter 4 HASR Performance Analysis 26 4.1 Simulation Scenario 26 4.2 Performance Analysis 28 Chapter 5 Conclusion 36 References 37 Appendix A Control packet format used in ANODR [9] 40

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