Paper 2005/182

Cryptanalysis on Chang-Yang-Hwang Protected Password Change Protocol

Chih-I Wang, Chun-I Fan, and D. J. Guan

Abstract

Recently, Chang et al. proposed an authenticated key agreement and protected password change scheme. They claimed that their scheme is simple and efficient. However, in this letter we point out that their protected password change protocol is insecure under the denial-of-service attack and the dictionary attack in some situations.

Metadata
Available format(s)
PDF
Publication info
Published elsewhere. Unknown where it was published
Keywords
AuthenticationPasswordsInformation securityCryptography
Contact author(s)
wangzy @ isl cse nsysu edu tw
History
2005-06-22: received
Short URL
https://ia.cr/2005/182
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2005/182,
      author = {Chih-I Wang and Chun-I Fan and D.  J.  Guan},
      title = {Cryptanalysis on Chang-Yang-Hwang Protected Password Change Protocol},
      howpublished = {Cryptology ePrint Archive, Paper 2005/182},
      year = {2005},
      note = {\url{https://eprint.iacr.org/2005/182}},
      url = {https://eprint.iacr.org/2005/182}
}
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