| RC4算法引起的WEP协议安全性的研究与改进 |
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| 引用本文： | 吴国凤,胡德启,王培东.RC4算法引起的WEP协议安全性的研究与改进[J].合肥工业大学学报(自然科学版),2012,35(5):617-620,710. |
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| 作者姓名： | 吴国凤 胡德启 王培东 |
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| 作者单位： | 合肥工业大学 计算机与信息学院,安徽 合肥,230009 |
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| 基金项目： | 国家自然科学基金-广东联合基金重点资助项目 |
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| 摘 要： | 与有线局域网相比,无线局域网的应用越来越广泛,然而无线传输过程中的安全问题更应引起重视。文章介绍了WEP协议的安全问题,并针对WEP协议中IV冲突所引起的问题提出分组分配机制,在发送端可以方便地进行冲突检测;对于检测到的冲突,又提出了密钥更新机制,主要是利用伪随机数发生器来生成一组密钥,在发生IV冲突时使用新的密钥;用IV分组分配机制与密钥更新机制保证了传输的安全性,并对改进后算法的性能进行了分析。
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| 关 键 词： | 无线局域网 流密码 RC4算法 伪随机数 WEP协议 |
Research and improvement in the security of WEP protocol based on RC4 algorithm |
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| WU Guo-feng
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HU De-qi
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WANG Pei-dong.Research and improvement in the security of WEP protocol based on RC4 algorithm[J].Journal of Hefei University of Technology(Natural Science),2012,35(5):617-620,710. |
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| Authors: | WU Guo-feng HU De-qi WANG Pei-dong |
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| Institution: | (School of Computer and Information,Hefei University of Technology,Hefei 230009,China) |
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| Abstract: | Compared with the wired LAN,the wireless LAN has been applied more widely.Therefore,more attention should be paid on the security of wireless transmission.In this paper,the security problem of the WEP protocol is introduced,and an IV group allocation mechanism,in which the sender can make a conflict detection,is put forward to solve the IV conflict problem in the WEP protocol.For the detected conflict,a key updating mechanism is also put forward which can generate a group key by using a pseudo-random number generator.The new key will be used when the IV conflict occurs.The safety of the transmission can be ensured by the IV group allocation mechanism and the key updating mechanism.Finally the performance of the improved algorithm is analyzed. |
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| Keywords: | wireless LAN stream cipher RC4 algorithm pseudo-random number WEP protocol |
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