A compact weak PUF circuit based on MOSFET subthreshold leakage current

Abstract

Owing to the large area and power consumption of traditional physically unclonable function (PUF)circuits, they are susceptible to interference from environmental factors. A compact PUF circuit design scheme is proposed by analyzing the circuit structure and sub-threshold leakage current deviation characteristics of a bistable PUF. First, the current-voltage sensitive characteristics of a transistor in the subthreshold operating region are utilized. Next, to improve the output response speed and the uniqueness of the characteristic information of the PUF circuit, the proposed PUF circuit is designed which combines with the positive feedback and RS latch characteristics. Finally, simulation results based on the TSMC 65 nm CMOS process show that the PUF has good uniqueness, randomness, and reliability. The cell layout area, the bit error rate (BER) in the worst case, and the energy consumption are 0.177 μm 2 , 2.8%, and 8.976 fJ/bit respectively.

A highly stable XOR APUF based on deviation signal screening mechanism

“…The signal delay transmission module is similar to n-XOR APUF structure and is constructed by n APUFs switch units set in parallel. In this article, the value range of n is [2,8]. Apply the same pulse signal at the initial port of the circuit, and enter the delay signal screening module after the excitation signal and the delay path established by the switch unit are transmitted.…”

“…But when people's production and life have become more efficient and convenient, it has also caused information security problems that cannot be ignored. As an important part of intelligent hardware, integrated circuits and systems are inevitably threatened by surveillance, forgery, tampering and other attacks in all aspects of their design, manufacturing and sales [2,3]. However, the traditional solution to this problem is difficult to meet the requirements of low cost and high security of modern electronic equipment with the development of miniaturization and lightweight.…”

PN-APUF: A MOSFET threshold loss based strong arbiter PUF with double-edge sampling

“…With the advancement of the digital age, data leakage, network attacks and other information security problems have become increasingly important. To address these challenges, researchers are continually seeking new methods to protect information from attacks [1]. Physically unclonable function (PUF) have gradually gained widespread attention as an innovative security technology.…”