基于信号传输理论的Glitch物理不可克隆函数电路设计

通过对信号传输理论、竞争-冒险现象和物理不可克隆函数(Physical Unclonable Functions, PUF)电路的研究，论文提出一种基于信号传输理论的毛刺型物理不可克隆函数电路(Glitch Physical Unclonable Functions, Glitch-PUF)方案。该方案首先根据偏差延迟的信号传输理论，推导出获得稳定毛刺输出的电路级数；然后利用组合逻辑电路的传播延迟差异，结合1冒险和0冒险获得具有毛刺的输出波形，采用多级延迟采样电路实现Glitch-PUF的输出响应。由于毛刺信号具有显著的非线性特性，将其应用于PUF电路可有效解决模型攻击等问题。最后在TSMC 65 nm CMOS工艺下，设计128位数据输出的电路结构，Monte Carlo仿真结果表明Glitch-PUF电路具有良好的随机性。

Design of Glitch Physical Unclonable Functions Circuit Based on Signal Transmission Theory

In this paper, a Glitch-PUF circuit technique is proposed by taking into consideration various aspects i.e. the signal transmission theory, race and hazard phenomenon, and Physical Unclonable Functions (PUF). First and foremost, the glitch circuit is obtained under the signal transmission theory. Using the combinational logic circuit propagation delay difference which causes 1-hazard and 0-hazard, this feature is used to form output glitch waveform. This glitch is sampled by multistage delay sampling circuit. Due to the nonlinear characteristics of the Glitch, Glitch-PUF can thwart the modeling attack. Finally, under the TSMC 65 nm CMOS technology, a 128-bit output data Glitch-PUF circuit is designed. Monte Carlo simulation results show that the Glitch PUF circuit has better randomness.