Integrated circuit design for physical unclonable function using differential amplifiers

Authors:
Byong-Deok Choi;Tae-Wook Kim;Mun-Kyu Lee;Ki-Seok Chung;Dong Kyue Kim
Affiliations:
Department of Electronic Engineering, Hanyang University, Seoul, Korea 133-791;Department of Electronic Engineering, Hanyang University, Seoul, Korea 133-791;School of Computer and Information Engineering, Inha University, Incheon, Korea 402-751;Department of Electronic Engineering, Hanyang University, Seoul, Korea 133-791;Department of Electronic Engineering, Hanyang University, Seoul, Korea 133-791
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2011

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Abstract

A physical unclonable function (PUF) based on process variations on silicon wafers is a very promising technology which finds various applications in identification and authentication, but only a few integrated circuits have been reported so far. As those circuits are vulnerable to power supply noises, switching noises and environmental variations, they lead to a reliability issue such as time-varying or metastable responses. To resolve this issue, this letter proposes a new integrated circuit design for PUFs using differential amplifiers. The feasibility of the proposed circuit has been theoretically analyzed and validated through HSPICE simulations for the previous and proposed circuits.