A Physically Unclonable Function Combining a Process Mismatch Amplifier in an Oscillator Collapse Topology

📋 论文概要

该论文提出了一种结合工艺失配放大器和振荡器崩溃拓扑的物理不可克隆函数（PUF），旨在解决物联网应用中低成本安全认证的需求。通过利用工艺变化产生的不可预测性，该PUF能够生成唯一且稳定的挑战-响应对，同时保持小面积和低功耗。

💡 主要创新点

• 提出了一种结合工艺失配放大器和振荡器崩溃拓扑的新型PUF结构，利用工艺变化实现高唯一性和可靠性。
• 通过优化电路设计，实现了对电源和温度变化的强免疫性，确保PUF响应的稳定性。
• 在保持小面积和低功耗的同时，实现了快速响应和高效操作。

🏷 关键词

📄 原文摘要

Physically unclonable functions (PUFs) have been actively investigated as a promising solution for low-cost secure authentication in Internet of Things (IoT) applications. A PUF should generate unique challenge-response pairs (CRPs) which need to be determined solely by process variations (which are unpredictable) with strong immunity to supply and temperature changes. A PUF requires intrinsically stable and reliable operation while keeping area small and power consumption low. Approaches using metastability can provide efficient operation with fast response [1], but they suffer from high sensitivity to noise, supply and temperature changes. To achieve better stability, circuits for amplification of process skew effects have been adopted in PUF cells. The two-transistor amplifier [2], NAND-gate [3] and current-starved inverter [4] have been proposed as static amplifiers for detection of process mismatch, achieving further

👥 作者与机构

Jaehan Park, Jae-Yoon Sim

Pohang University of Science and Technology, Pohang, Korea