Affiliations: Department of Management Information System, National
Chung Hsing University, 250 Kuo Kuang Road, Taichung, Taiwan 402, R.O.C. | Department of Information Management, National
Taichung Institute of Technology, 129 Sec. 3, San-min Rd., Taichung, Taiwan
404, R.O.C. | Graduate Institute of Networking and Communication
Engineering, Chao Yang University of Technology, 168 Gifeng E. Rd., Wufeng,
Taichung County, Taiwan 413, R.O.C.
Abstract: The denial-of-service attack, a malicious client executes a key
agreement protocol simultaneously many times to exhaust the server's memory or
computing resource and to interfere the honest client connecting with the
server. It is a serious problem in the key agreement protocol. A key agreement
protocol which resists to the storage-exhaustion and the CPU-exhaustion attack
was firstly proposed by Hiros-Matsuura. However, their protocol is not
efficient enough during the weak key validation. Our proposed protocol modifies
the weak key validation and avoids the unnecessary heavy computation to enhance
the resistance of the denial-of-service attack. The most important
contributions of our protocol are not only efficiently to resist CPU-exhaustion
and memory-exhaustion attacks but also prevent bandwidth consumption.
