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The Computer Journal 2005 48(1):27-29; doi:10.1093/comjnl/bxh061
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Capsule reviews

Note on Robust and Simple Authentication Protocol

Hung-Yu Chien1 *, Ren-Chiun Wang1 § and Chou-Chen Yang2 ¶

1 Department of Information Management, Chaoyang University of Technology, 168 Gifeng E. Rd., Wufeng, Taichung County, Taiwan 413, R.O.C., 2 Department of Management Information System, National Chung Hsing University, 250 Kuo Kuang Road, 402 Taichung, Taiwan, R.O.C.

Robust and simple authentication protocol (ROSI) is a highly efficient authentication protocol. However, its state-synchronization property makes it vulnerable to the denial of service (DOS) attack. This paper shows the DOS attack on the ROSI protocol, and proposes an improved scheme that conquers the weakness and extends its key agreement function, and improves the server's performance.

Received 13 January 2004. Revised 12 July 2004.

* Email: cc_yang{at}nchu.edu.tw

§ Email: redfish6{at}ms45.hinet.net

Email: s9114624{at}mail.cyut.edu.tw


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