Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/6052
標題: 無線區域網路架構中有線等效保密演算法安全性分析
The Analysis of Data Security in Wired Equivalent Privacy Algorithm for Wireless Local Area Network
作者: 陳俊利
Chen, Gen-Li
關鍵字: wired equivalent privacy;無線區域網路;Wireless Local Area Network;Data security;有線等效加密演算法;802.11
出版社: 電機工程學系
摘要: 
當無線區域網路的應用愈來愈普遍,為我們帶來更多的便利的同時,資訊安全的課題也愈來愈重要。因為無線電波在空氣中傳遞隨時有被監聽的可能性,更增加了無線區域資訊被截取的威脅,在802.11標準中雖然提出了有線等效加密演算法(WEP),希望提供足夠的安全性來防止資料的流失,但有線等效加密演算法所採取的架構已經被証明是不夠安全的,駭客可以在短短的幾個小時或幾天之內就輕易的破解密碼,本文主要就是在討論在801.11的無線區域網路中,當系統管理者採用了有線等效加密演算法之後,仍可能會面臨的各項可能攻擊,導致資料的不完整或被竊取。
最後再就目前所發展的各項資訊安全技術中,系統管理者在建置一個無線區域網路時,可以採用的各種方法以提高資訊安全提出建議,例如新的Fast Packet Keying或目前在802.1X標準中所提出的EAP標準作一介紹,希望對系統管理者在面對資訊安全的威脅時能有所助益。

Wireless Local Area Network(WLAN) provides convenience and mobility but it also poses security challenges. The IEEE 802.11 standard defines the Wired Equivalent Privacy(WEP), which is an encapsulation of 802.11 data frames. The goal of WEP is to provide data security to the level of a wired network. But the WEP encapsulation fails to meet its design goal hacker maybe take the shared key in several hours or in few day to break the encryption because the weakness in WEP algorithms. The weakness stems from the usage of the initialization vector in WEP. This vulnerability prevents the WEP encapsulation from providing a useful measure for data security at any key size.
In this thesis we discuss the issues of data security in WEP and then we suggest some useful methods to enhance the security in WLAN.
URI: http://hdl.handle.net/11455/6052
Appears in Collections:電機工程學系所

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