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Breaking a Smart Card based Secure Password Authentication Scheme

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2 Author(s)
Eun-Jun Yoon ; Daegu Polytech. Coll., Daegu ; Kee-Young Yoo

Recently, Wang-Chang proposed a password authentication scheme for implementing a remote access network system whose security rests in part on the difficulty of factoring a large number and discrete logarithm problem. This paper presents that Wang-Chang's smart card based password authentication scheme is insecure against two impersonation attacks and the off-line password guessing attack.

Published in:

Information Security and Assurance, 2008. ISA 2008. International Conference on

Date of Conference:

24-26 April 2008