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Access control protocol is always highly required in wireless sensor networks (WSNs), where low cost sensors are deployed for obtaining the environments sensitive data from the real applications. In this regards, very recently, Lee et al proposed practical access control protocols (also called as PACPs) for WSNs (published in IEEE TCE) and claimed that their PACPs are practical and secure for the...
The evolution of digital communication era includes both devices and applications running on different platforms. Specifics applications are needed for a safeguard communication ensuring protection and trust services to the users. This paper presents an authentication and session-key establishment protocol that enabling mutual authentication procedure between involved entities in the WSNs. This scheme...
Power analysis attack on cryptographic hardware device aims to study the power consumption while performing operations using secrets keys. Power analysis is a form of Side Channel Attack (SCA) which allows an attacker to compute the key encryption from algorithm using Simple Power Analysis (SPA), Differential Power Analysis (DPA) or Correlation Power Analysis (CPA). The theoretical weaknesses in algorithms...
A performance test system was developed to evaluate automatic tank gauging system (ATGS) that detects leakage from underground storage tanks. The performance test system consists of assessments of the accuracy and repeatability and the leak detection capability of the ATGS. The target accuracy, repeatability, and leak detection capability is 0.04, 0.01, and 0.04 mm, respectively. After the development...
In this paper, we describes the wafer level surface acoustic wave (SAW) filter package, 1.0times0.8 mm2, which is applicable for radio frequency (RF) stage in mobile phones. The SAW filter is reduced in size and thickness by using a 4" wafer level package process technique. The technique uses interconnection via and LiTaO3 (LT)-LiTaO3 (LT) wafer bonding structure. The interconnection via is formed...
We discuss key technologies of 180-nm node ferroelectric memories, whose process integration is becoming extremely complex when device dimension shrinks into a nano scale. This is because process technology in ferroelectric integration does not extend to conventional shrink technology due to many difficulties of coping with metal-insulator-metal (MIM) capacitors. The key integration technologies in...
As the needs of motorization in vehicle system increase, studies on the motor driven power steering system (hereinafter referred to as MDPS (motor driven power steering)) are actively in progress. Being combined with the current trend for the protection of environment and energy-saving, MOPS will be the main stream of future power steering systems and an intense target of technology innovation. This...
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