Abstract
Chen, Tsai, and Jan (Chen et al. for short) recently proposed a Radio Frequency Identification (RFID) access control scheme, which includes an authentication mechanism and an access right authorization mechanism designed for a low-cost RFID system. Chen et al. does not only show security weaknesses of Weis's and Chien's access control schemes, but also claim their proposed scheme can resist the man-in-the-middle attack, the spoofed reader attack, the spoofed tag attack and guarantee mutual authentication and location privacy. However, we found that Chen et al.'s scheme is vulnerable to the impersonating reader attack and does not have any defense mechanism against denial-of-service (DoS) attack such as resource exhaustion attack. In this paper, we will show that Chen et al.'s scheme is insecure and suffers from aforementioned potential security vulnerabilities.
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