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 \VEP (Wired Equivalent Privacy), it is a symmetric-key encryption
algorithm that is based on RC4 (Rivest Cipher 4). Unfortunately this protocol had many
flaws that made it exposed to many attacks. This thesis presents a set of improvements
for WEP: these improvements convert WEP to a hybrid cryptosystem, a system that is
based on both a symmetric-key algorithm and an asymmetric-key algorithm.
