期刊论文

A Reliable Physical Unclonable Function for Chip Fingerprint

中文

电子学报

0372-2112

2019

47

10

2116-2125

10.3969/j.issn.0372-2112.2019.10.013

国家自然科学基金资助项目（No.61604020）； 湖南省教育厅科学研究项目（No.18B164）；

本校为第一机构

本文引入一种可靠的芯片指纹物理不可克隆函数( Physical Unclonable Function)电路.该PUF包括基于电流饥饿型延迟单元的工艺敏感电路、时间偏差放大器、时间偏差比较器、表决机制与扩散算法五个部分.通过捕获制造工艺的偏差,每一个工艺敏感电路可以稳定产生两路具有微弱延时差的延迟信号,然后比较生成指纹ID;设计一种新型的扩散算法改善PUF的唯一性,引入时间偏差放大器与表决机制增强PUF相对于温度与电源电压变化的稳定性.文中PUF在0.18μm CMOS工艺下实现.仿真结果表明,该PUF的输出具有均匀统计分布特征,同时在温度从-40℃至100℃,电源电压从1.7V至1.9V变化条件下,其输出ID具有97.5%的稳定性....

A reliable physical unclonable function (PUF) for chip fingerprint using current starved delay element (CSDE) is described in this paper. The proposed PUF is composed of CSDE-based sensors, time difference amplifier, time difference comparator, voting mechanism and diffusion algorithm circuit. By capturing manufacturing process variations, each sensor produces two slightly different delay-time values that can be compared in order to create a digital identification (ID) for the chip. A new diffusion algorithm is designed to further improve the u...