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Wang, X., Zhang, W., Zhang, J. and Khan, M.K. (2007) Cryptanalysis and Improvement on Two Efficient Remote User Authentication Scheme Using Smart Cards. Computer Standards and Interfaces, 29, 507-512. http://dx.doi.org/10.1016/j.csi.2006.11.005

has been cited by the following article:

• TITLE: Weaknesses of a Dynamic ID Based Remote User Authentication Protocol for Multi-Server Environment

  AUTHORS: R. Madhusudhan, Adireddi Praveen

  KEYWORDS: Authentication; Smart Card; Dynamic ID; Multi-Server Environments; Password

  JOURNAL NAME: Journal of Computer and Communications, Vol.2 No.4, March 18, 2014

  ABSTRACT: Currently, smart card based remote user authentication schemes have been widely adopted due to their low cost and convenient portability. With the purpose of using various different internet services with single registration and to protect the users from being tracked, various dynamic ID based multi-server authentication protocols have been proposed. Recently, Li et al. proposed an efficient and secure dynamic ID based authentication protocol using smart cards. They claimed that their protocol provides strong security. In this paper, we have demonstrated that Li et al.’s protocol is vulnerable to replay attack, denial of service attack, smart card lost attack, eavesdropping attack and server spoofing attacks.