A hybrid cryptosystem based on WEP for 802.11 networks

Authors:
Ramzi A. Haraty;Walid El Horr
Affiliations:
(Corresponding author. Tel.: +961 1 867620 ext. 1285/ Fax: +961 1 867620 ext. 1226/ E-mail: rharaty@lau.edu.lb) Lebanese American University, Division of Computer Science and Mathematics, Beirut, ...;Lebanese American University, Division of Computer Science and Mathematics, Beirut, Lebanon
Venue:
Journal of Computational Methods in Sciences and Engineering - Selected papers from the International Conference on Computer Science, Software Engineering, Information Technology, e-Business, and Applications, 2004
Year:
2006

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Abstract

Wireless is the next generation networking technology. The security of such technology is very critical because its physical layer is the electro-magnetic waves that can be easily intercepted by anyone. The original security protocol for 802.11 wireless networks is called WEP (Wired Equivalent Privacy). It is a protocol that is based on symmetric-key encryption algorithm RC4 (Rivest Cipher 4). Unfortunately, this protocol had many flaws that made it exposed to many attacks. This paper presents a set of improvements for WEP, which include key management and distribution, and authentication. These improvements convert WEP to a hybrid cryptosystem, a system that is based on both a symmetric-key algorithm and an asymmetric-key algorithm.