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Ring oscillator (RO)-based physical unclonable function (PUF) is an emerging hardware security primitive but its response reproducibility is susceptible to changes in operating conditions and device aging. Present solutions to increase RO PUF reliability either incur large hardware overhead or require sophisticated RO selection algorithm. This paper exploits the optimal biasing of current starved...
Ring oscillator (RO) based physical uncloanble function (PUF) is an emerging hardware security primitive but its response is susceptible to changes in operating conditions. Current solutions either incur large hardware overhead or require sophisticated RO selection algorithms to increase its reliability. This is the first paper that exploits the temperature invariant biasing of three different types...
With the globalization of integrated circuit (IC) design and fabrication, there is a growing concern on the devastating impact of subverted chip supply. This paper presents a current sensing circuit that converts the current activity on local power grid to a timing pulse to detect if an IC is Trojan-infected. This new approach increases the Trojan detection sensitivity by combining the switching activity...
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