Security Mechanisms and Multipath Routing Protocols for Ad hoc Wireless Network

[[abstract]]中文摘要 本論文探討現今Infrastructure 模式無線網路的安全標準，搭 配現有加解密技術，嘗試為Ad hoc 模式無線網路找到易於建構， 而且簡單有效的安全機制。 本論文將X.509 數位憑證概念整合到802.1X 無線網路使用 者認證系統中，讓使用者離開Infrastructure 模式進入Ad hoc 模 式無線網路後仍然可以對其它使用者進行點對點身分認證。對稱 式與非對稱式加密技術搭配運用的混合式加密系統能夠提供足 夠的資料傳輸安全。將此機制用於保護繞徑協定控制封包可確保 路徑搜尋過程的安全性，讓繞徑協定可以建立強韌的Ad hoc 無 線網路拓撲。最後本論文提出Risk Sharing MultiPath Routing(RSMR) Protocol，並說明其優點與模擬測試結果。[[abstract]]ABSTRACT We probed into the security standards for Infrastructure wireless networks as well as the related encryption/decryption schemes. In this study, efficient solutions for the security in ad hoc wireless networks have been implemented and analyzed. We integrated X.509 with IEEE 802.1X for the authentication in wireless networks. Wireless mobile nodes are still able to achieve node-to-node authentication, after leaving Infrastructure networks for ad hoc networks. Symmetric encryptions combined with Public-key schemes provide the necessary security in wireless communications. Control messages in routing protocols can been securely transmitted using these security schemes. Based on routing protocols, secure transmission topologies can be established for ad hoc networks. Finally we proposed Risk Sharing MultiPath Routing (RSMR) Protocol. Simulation and analysis results prove our protocols reliable