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IJNSEC
2008

Cryptanalysis of Liao-Lee-Hwang's Dynamic ID Scheme

13 years 3 months ago
Cryptanalysis of Liao-Lee-Hwang's Dynamic ID Scheme
Recently, Das, Saxena and Gulati proposed a dynamic Id based remote user authentication scheme that allows the users to choose and change their passwords freely and does not maintain verifier table. But their scheme has few weaknesses and cannot achieve mutual authentication. In 2005, Liao, Lee and Hwang showed that Das et al. scheme is vulnerable to guessing attack and proposed an enhanced scheme which also achieves mutual authentication. In this paper we show that Liao et. al's. scheme cannot withstand impersonation attack, reflection attack and it is completely insecure as a user can successfully log on to a remote system with a random password.
Mohammed Misbahuddin, C. Shoba Bindu
Added 12 Dec 2010
Updated 12 Dec 2010
Type Journal
Year 2008
Where IJNSEC
Authors Mohammed Misbahuddin, C. Shoba Bindu
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