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Paper 2005/466

Cryptanalysis of the Yang -Wang's password authentication schemes

Jue-Sam Chou and Ming-De Yang and Guey-Chuen Lee

Abstract

In 1999, Yang and shieh proposed two password authentication schemes using smart cards. But in 2003, Sun and Yeh indicated that their schemes are subject to the forgery attack. So in 2005, Yang and Wang proposed an improvement of Yang and Shieh¡¦s schemes to resist against Sun and Yeh¡¦s attack. However in this paper, we will point out that Yang and Wang¡¦s schemes still suffer from the forgery attack. Because in their schemes, one can masquerade as a legal user and cheat the remote server successfully in the authentication phase.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. not be duplicates of work published previously or scheduled to be published in peer-reviewed publications
Keywords
smart cards
Contact author(s)
jschou @ mail nhu edu tw ; g3141012 @ mail2 nhu edu tw
History
2005-12-31: received
Short URL
https://ia.cr/2005/466
License
Creative Commons Attribution
CC BY
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