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Weaknesses of a Remote User Authentication Scheme Using Smart Cards for Multi-Server Architecture
Wei-Chi KU Shen-Tien CHANG Min-Hung CHIANG
IEICE TRANSACTIONS on Communications
Publication Date: 2005/08/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fundamental Theories for Communications
Euclidean plane, forgery attack, multi-server architecture, password authentication, smart card,
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Recently, Lin, Hwang, and Li proposed an efficient remote authentication scheme using smart cards for multi-server architecture based on the geometric property of the Euclidean plane. Herein, we show that their scheme is vulnerable to two forgery attacks and a password-guessing attack, and is not easily repairable. Furthermore, their scheme lacks a proper user eviction mechanism.