15fJ/b Static Physically Unclonable Functions for Secure Chip Identification with <2% Native Bit Instability and 140× Inter/Intra PUF Hamming Distance Separation in 65nm

📋 论文概要

该论文提出了一种静态物理不可克隆函数（PUF）用于安全芯片识别，通过利用本地工艺变化生成芯片特有的密钥，解决了芯片伪造和轻量级认证中的安全问题。实现了低于2%的原生比特不稳定性，并显著提高了能效。

💡 主要创新点

• 提出了一种静态PUF设计，通过电路原理放大本地工艺变化并抑制全局PVT变化，实现高可靠性和低能耗。
• 实现了15fJ/b的超低能耗和140倍的能效提升，同时保持低于2%的原生比特不稳定性。

🏷 关键词

📄 原文摘要

Physically unclonable functions (PUFs) enable information security down to the chip level [1-4]. Arrays of PUF bitcells (Fig. 14.3.1) generate chip-specific keys that are unpredictable, repeatable and cannot be measured externally, thus uniquely identifying the die to counteract chip piracy/counterfeiting and enable lightweight authentication/encryption [1-4]. In silicon PUFs, trustworthy bit generation is achieved by accentuating local process variations through various circuit principles (e.g., delay mismatch) and rejecting global process/voltage/temperature (PVT) variations, layout-dependent process variations and noise [2]. In this work, a class of fully static and mono-stable PUFs is proposed for highly robust low-energy generation of chip-specific keys. Being static, no transient is involved in the PUF bit generation, as opposed to ring oscillator-, arbiter- or metastability-based PUFs [1-4]. Being mono-stable, the state cannot be

👥 作者与机构

Anastacia Alvarez, Wenfeng Zhao, Massimo Alioto

National University of Singapore, Singapore, Singapore