Security Analysis of an Adaptable and Scalable Group Access Control Scheme for Managing Wireless Sensor Networks

Recently, Wu et al. proposed an adaptable and scalable group access control scheme (GAC) for managing wireless sensor networks (WSNs) [Telematics and Informatics, 30: 144-157, 2013], and they claimed that their proposed GAC mechanism provides forward secrecy and backward secrecy, and it also prevents man-in-the-middle attack. However, in this paper, we revisitWu et al.'s scheme and show thatWu et al.'s scheme fails to provide the forward secrecy as well as the backward secrecy and also their scheme does not prevent the man-in-the-middle attack. As a result, Wu et al.'s scheme is not suitable for practical applications.