Title :
Cryptanalysis of a modified remote user authentication scheme using smart cards
Author :
Leung, Kai-Chi ; Cheng, L.M. ; Fong, Anthony S. ; Chan, Chi-Kwong
Author_Institution :
Dept. of Comput. Eng. & Information Technol., City Univ. of Hong Kong, China
Abstract :
In this paper, the security of a modified remote user authentication scheme proposed by Shen, Lin, and Hwang is analyzed. We show that the modified scheme is still vulnerable to the attack proposed by Chan and Cheng. Moreover, the extended attack proposed by Chang and Hwang in 2003 also works well.
Keywords :
authorisation; computer crime; cryptography; smart cards; cryptanalysis; extended attack; registration phase security; remote user authentication scheme; smart cards; Authentication; Cryptography; Delay systems; Information technology; Law; Legal factors; Public key; Random number generation; Security; Smart cards;
Journal_Title :
Consumer Electronics, IEEE Transactions on
DOI :
10.1109/TCE.2003.1261224
