Cryptanalysis on Chang-Yang-Hwang Protected Password Change Protocol

Chih-I Wang; Chun-I Fan; D.  J.  Guan

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: Authentication Passwords Information security Cryptography
Contact author(s): wangzy @ isl cse nsysu edu tw
History: 2005-06-22: received
Short URL: https://ia.cr/2005/182
License: 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},
      url = {https://eprint.iacr.org/2005/182}
}