On security of a more efficient and secure dynamic ID-based remote user authentication scheme. - Cheng-Chi Lee; Chin-Ling Chen; Chun-Ta Li; Rui-Xiang Chang (ISDA, 2010)

Improving Two Novel Three-Party Encrypted Key Exchange Protocols with Perfect Forward Secrecy. - Cheng-Chi Lee; Rui-Xiang Chang; Hsien-Ju Ko (Int. J. Found. Comput. Sci., 2010)

A secure dynamic ID based remote user authentication scheme for multi-server environment using smart cards. - Cheng-Chi Lee; Tsung-Hung Lin; Rui-Xiang Chang (Expert Syst. Appl., 2011)

A simple and efficient authentication scheme for mobile satellite communication systems. - Cheng-Chi Lee; Chun-Ta Li; Rui-Xiang Chang (Int. J. Satell. Commun. Netw., 2012)

An Improved Delegation-Based Authentication Protocol for PCSs. - Cheng-Chi Lee; Rui-Xiang Chang; Te-Yu Chen; Lung Albert Chen (Inf. Technol. Control., 2012)

An undetectable on-line password guessing attack on Nam et al.'s three-party key exchange protocol. - Cheng-Chi Lee; Chun-Ta Li; Rui-Xiang Chang (J. Comput. Methods Sci. Eng., 2013)