Security flaw of authentication scheme with anonymity for wireless communications
Ji‐Seon Lee, Jik Hyun Chang, Dong Hoon Lee · IEEE Communications Letters · 2009
Recently, Wu et al. discussed some security flaws of enhanced authentication scheme with anonymity for wireless environments proposed by Lee et al. and showed how to overcome the problems regarding anonymity and backward secrecy. However, in the paper, we will show that Wu et al.'s improved scheme still did not provide user anonymity as they claimed.