An Enhanced Verifier-Free Remote User Password Authentication Scheme. - Wei-Chi Ku; Chun-Hao Hwang; Hao-Rung Chung (ICEBE, 2007)

An Improved Password-Based Authenticated Key Agreement Scheme for Pervasive Applications. - Maw-Jinn Tsaur; Wei-Chi Ku; Hao-Rung Chung (EUC (2), 2008)

Three weaknesses in a simple three-party key exchange protocol. - Hao-Rung Chung; Wei-Chi Ku (Inf. Sci., 2008)

Weaknesses and improvement of Wang et al.'s remote user password authentication scheme for resource-limited environments. - Hao-Rung Chung; Wei-Chi Ku; Maw-Jinn Tsaur (Comput. Stand. Interfaces, 2009)