A Physical Unclonable Function based on Capacitor Mismatch in a Charge-Redistribution SAR-ADC

Qianying Tang; Won Ho Choi; Luke Everson; Keshab K. Parhi; Chris H. Kim

doi:10.1109/ISCAS.2018.8351601

A Physical Unclonable Function based on Capacitor Mismatch in a Charge-Redistribution SAR-ADC

Qianying Tang, Won Ho Choi, Luke Everson, Keshab K. Parhi, Chris H. Kim

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

A Physical Unclonable Function (PUF) using capacitor mismatch in a standard successive approximation register analog-to-digital converter (SAR-ADC) as the entropy source is demonstrated in 65nm CMOS. SAR-ADCs are readily available in many system-on-chips, making the hardware overhead of the proposed PUF almost negligible. The inherent process variation of metal-oxide-metal (MOM) capacitors is harnessed through a charge redistribution operation which is sampled by the voltage comparator. To enhance the stability of the PUF output, soft response generation and dynamic thresholding techniques were adopted. Finally, we verify that performing the enrollment operation at a lower operating voltage can ensure that PUF responses are stable at the nominal supply voltage used during authentication.

Original language	English (US)
Title of host publication	2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781538648810
DOIs	https://doi.org/10.1109/ISCAS.2018.8351601
State	Published - Apr 26 2018
Event	2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Florence, Italy Duration: May 27 2018 → May 30 2018

Publication series

Name	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	2018-May
ISSN (Print)	0271-4310

Other

Other	2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018
Country	Italy
City	Florence
Period	5/27/18 → 5/30/18

Keywords

Physical Unclonable Function (PUF)
Successive Approximation (SAR) ADC
capacitance variation
charge redistribution

Access

10.1109/ISCAS.2018.8351601

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Cite this

Tang, Q., Choi, W. H., Everson, L., Parhi, K. K., & Kim, C. H. (2018). A Physical Unclonable Function based on Capacitor Mismatch in a Charge-Redistribution SAR-ADC. In 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings [8351601] (Proceedings - IEEE International Symposium on Circuits and Systems; Vol. 2018-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS.2018.8351601

A Physical Unclonable Function based on Capacitor Mismatch in a Charge-Redistribution SAR-ADC. / Tang, Qianying; Choi, Won Ho; Everson, Luke; Parhi, Keshab K.; Kim, Chris H.

2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018. 8351601 (Proceedings - IEEE International Symposium on Circuits and Systems; Vol. 2018-May).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Tang, Q, Choi, WH, Everson, L, Parhi, KK & Kim, CH 2018, A Physical Unclonable Function based on Capacitor Mismatch in a Charge-Redistribution SAR-ADC. in 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings., 8351601, Proceedings - IEEE International Symposium on Circuits and Systems, vol. 2018-May, Institute of Electrical and Electronics Engineers Inc., 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018, Florence, Italy, 5/27/18. https://doi.org/10.1109/ISCAS.2018.8351601

Tang Q, Choi WH, Everson L, Parhi KK , Kim CH. A Physical Unclonable Function based on Capacitor Mismatch in a Charge-Redistribution SAR-ADC. In 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2018. 8351601. (Proceedings - IEEE International Symposium on Circuits and Systems). https://doi.org/10.1109/ISCAS.2018.8351601

Tang, Qianying ; Choi, Won Ho ; Everson, Luke ; Parhi, Keshab K. ; Kim, Chris H. / A Physical Unclonable Function based on Capacitor Mismatch in a Charge-Redistribution SAR-ADC. 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018. (Proceedings - IEEE International Symposium on Circuits and Systems).

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