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In recent years, an increasing number of researchers have become involved in wireless sensor networks (WSNs) and cloud computing. However, integrating WSN and cloud computing technology to monitor the environment is still an open issue. In this paper, we propose a mobile-device-based environmental monitor based on SaaS (Software as a Service) of cloud computing architecture. The proposed model is...
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...
Recently, Chen et al. proposed an anonymous authentication scheme for mobile pay-TV, they claim that their scheme can defend against reply attacks, off-line password guessing attacks, impersonation attack, forgery attack, man-in-the-middle attack, and insider attack. In this paper, we show that Chen et al.'s scheme is still vulnerable to off-line password guessing attacks and fails provide mutual...
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