Low-cost PUF Circuit Based on Sub-threshold Current Array

CUI Yijun; ZHANG Hu; YAN Chenggang; WANG Chenghua; LIU Weiqiang

doi:10.11999/JEIT211272

Volume 45 Issue 1

Jan. 2023

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Article Navigation > Journal of Electronics & Information Technology > 2023 > 45(1): 42-48

CUI Yijun, ZHANG Hu, YAN Chenggang, WANG Chenghua, LIU Weiqiang. Low-cost PUF Circuit Based on Sub-threshold Current Array[J]. Journal of Electronics & Information Technology, 2023, 45(1): 42-48. doi: 10.11999/JEIT211272

Citation:

CUI Yijun, ZHANG Hu, YAN Chenggang, WANG Chenghua, LIU Weiqiang. Low-cost PUF Circuit Based on Sub-threshold Current Array[J]. Journal of Electronics & Information Technology, 2023, 45(1): 42-48. doi: 10.11999/JEIT211272

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Low-cost PUF Circuit Based on Sub-threshold Current Array

doi: 10.11999/JEIT211272

College of Electronics and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210000, China

Funds: The National Natural Science Foundation of China (62134002, 62104107), The Natural Science Foundation of Jiangsu Province (BK20210287), The Fundamental Research Funds for the Central Universities (NS2021031)

Received Date: 2021-11-16
Accepted Date: 2022-03-25
Rev Recd Date: 2022-03-16

Available Online: 2022-04-06

Publish Date: 2023-01-17

Abstract

Abstract

The Physical Unclonable Function (PUF) can extract the process error of the integrated circuit during the processing and convert it into a key for security authentication. It is often used in occasions where resources and power consumption are limited, practical PUF circuits require extremely high hardware utilization efficiency and resistant to machine learning attack. A low-cost PUF circuit design scheme based on the sub-threshold current array discharge scheme is proposed. The current of the sub-threshold current array has extremely high non-linear characteristics. By introducing a gate-controlled switch and a cross-coupling structure, the uniqueness and stability of the PUF circuit can be significantly improved. In addition, the design of introducing sub-threshold current can greatly improve the security of PUF and reduce the modeling attacks of traditional attack methods. In order to improve the resource utilization of the chip, the area of the proposed PUF cell is only 377.4 μm² through a detailed and compact layout design and optimization, making it particularly suitable for low-power and low-cost applications such as IoT. The simulation results show that the PUF of the sub-threshold circuit discharge array proposed in this paper has good uniqueness and stability, and the uniqueness is 48.85% under the standard temperature and voltage without the need to calibrate the circuit. In the temperature range of –20°C to 80°C and the voltage variation range of 0.9 V to 1.3 V, its reliability reaches 99.47%.
- Physical Unclonable Function (PUF),
- Sub-threshold current array,
- Hardware security

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References(21)

References

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