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A Client/Sever Authenticated Key Exchange Protocol using Shared Password  

류은경 (경북대하교 컴퓨터공학과)
윤은준 (경북대하교 컴퓨터공학)
유기영 (경북대하교 컴퓨터공학과)
Publication Information
Journal of KIISE:Information Networking / v.31, no.3, 2004 , pp. 252-258 More about this Journal
Abstract
In this paper, we propose a new authenticated key exchange protocol in which client and sever can mutually authenticate and establish a session key over an insecure channel using only a human memorable password. The proposed protocol is based on Diffie-Hellman scheme and has many of desirable security attributes: It resists off-line dictionary attacks mounted by either Passive or active adversaries over network, allowing low-entropy Passwords to be used safely. It also offers perfect forward secrecy, which protects past sessions when passwords are compromised. In particular, the advantage of our scheme is that it is secure against an impersonation attack, even if a server's password file is exposed to an adversary. The proposed scheme here shows that it has better performance when compared to the previous notable password-based key exchange methods.
Keywords
Password; Authentication; Key Exchange/Agreement; Diffie-Hellman;
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