Security flaw of authentication scheme with anonymity for wireless communications

  • Authors:
  • Ji-Seon Lee;Jik Hyun Chang;Dong Hoon Lee

  • Affiliations:
  • Graduate School of Information Security CIST, Korea University;Dept. of Computer Science and Engineering, Sogang University, Seoul, Korea;Graduate School of Information Security CIST, Korea University

  • Venue:
  • IEEE Communications Letters
  • Year:
  • 2009

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Abstract

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.