Kota Yoshizaki

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Malware has received much attention in recent years. Antivirus software is widely used as a countermeasure against malware. However, some kinds of malware can evade detection by antivirus software, hence, a new detection method is required. In this paper, we propose a malware detection method that focuses on Anti-Debugging functions. An Anti-Debugging(More)
This paper proposes a quadrature ring oscillator with small phase error. The proposed technique uses two feedback loops. One of the loops calibrates phase error of two outputs while the other keeps the oscillation frequency constant. The power consumption and chip area will be reduced by the proposed technique because an additional variable delay cell is(More)
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