The Improvement of YSYCT Scheme for Imbalanced Wireless Network.
Jung-Wen Lo · 2006
Recently, Yeh et al. proposed an improved password authenticated key exchange scheme (YSYCT scheme) which is secure against undetectable on-line password guessing attacks and provides the explicit key authentication. In this article, readers can understand that the YSYCT scheme still is insecure and the user’s password can be exposed by man-in-the-middle attack. Besides, an improved protocol is proposed to avoid this attack.