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Physically Unclonable Functions (PUF) are security primitives to combat Integrated Circuit (IC) cloning and counterfeiting. The response of the PUF is expected to be stable under environmental fluctuations (e.g., temperature and voltage fluctuation). Our analysis indicate that conventional arbiter PUF experiences significant variations due to environmental fluctuation degrading quality. In this paper...
We propose Schmitt-Trigger (ST) based recycling sensor combined with self-calibration to mitigate process-variation induced sensing errors and to amplify the aging induced delay degradation. We also propose voltage boosting to enhance the aging mechanisms. The proposed sensor is able to detect fine grained recycling (0.1s usage with negligible error).
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