Ali Mahani

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Recently Qian et al. [38] have proposed a new attack for RFID systems, called counting attack, where the attacker just aims to estimate the number of tagged objects instead of steal the tags' private information. They have stated that most of the existing RFID mutual authentication protocols are vulnerable to this attack. To defend against counting attack,(More)
—The lifetime of wireless sensor networks (WSNs) is an important issue of much recent researches. A practical and widely used approach to prolong the lifetime of WSN is multi-mode protocols in which the sensor nodes are switched between active and sleep modes. But there is no work so far to study the multi-mode structures from reliability viewpoint. In this(More)