Strengthening the Encryption Mechanism in WEP Protocol

Wi-Fi is serving as a standard for broadband connectivity in homes, offices, and at many public locations. WEP is a security protocol for WLANs designed to give security equivalent to that provided on Wired Networks. It is a framework that uses RC4 encryption algorithm. Many flaws had been discovered in the RC4 algorithm by the experts. In the RC4 the encryption is performed by a ‘bit-by-bit’ ‘exclusive or’ operation with the secret key and if the key becomes known by unauthorized individuals, the key is compromised and data of the sender in the network can be interpreted by the hackers. In this paper we analyze some weaknesses on the RC4 stream cipher which is used by WEP Protocol and we proposes an public key encryption scheme Elliptic Curve Cryptography (ECC) in WEP which will overcomes the drawbacks of RC4 encryption Protocol and further we analyze the NAF and Block Method of Point Multiplication in ECC. The proposed ECC encryption will provide the secure encryption mechanism in the WEP Protocol.