An Improved Two-Factor Authenticated Key Exchange Protocol in Public Wireless LANs
Ajit Pratap Singh, Rahul Rishi · 2013
Recently, Lee et. al. carried out the cryptanalysis of Juang et. al. two-factor authentication key exchange protocol in Public wireless LANs. It was shown that Juang et.al. protocol is vulnerable to the stolen verifier attack and doesn't satisfy the user anonymity. Apart from the, high computational overhead of the server. This paper, proposes an improved protocol towards authentication and key exchange based on Elliptic Curve Decision Diffie-Hellman(DDH) problem which ensures their strong resistance towards the existing weaknesses. Besides this, their security and performance analysis shows that the proposed protocol is more secure and efficient.