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On the Weaknesses and Improvements of an Efficient Password Based Remote User Authentication Scheme Using Smart Cards

Authors:
Manoj Kumar
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URL: http://eprint.iacr.org/2004/163
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Abstract: In 2002, Chien et al. proposed an efficient remote user authentication scheme using smart cards. Later, in 2004, W. C. Ku and S. M. Chen pointed out some attacks on Chien et al.?s scheme. W. C. Ku and S. M. Chen also proposed a modified scheme to prevent the attacks on Chien et al.?s scheme. This paper discusses the security of the W. C. Ku and S. M. Chen?s scheme. This paper aims to show that the modified scheme is still vulnerable to the password guessing attack and the insider attack.
BibTeX
@misc{eprint-2004-12135,
  title={On the Weaknesses and Improvements of an Efficient Password Based Remote User Authentication Scheme Using Smart Cards},
  booktitle={IACR Eprint archive},
  keywords={Cryptography, Cryptanalysis, Network security, Remote user authentication, Smart card, Password, Reflection attack, Password guessing attack and Insider attack.},
  url={http://eprint.iacr.org/2004/163},
  note={Not Published chayayamu@yahoo.co.in 12687 received 8 Jul 2004, withdrawn 26 Sep 2004},
  author={Manoj Kumar},
  year=2004
}