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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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 languageEnglish (US)
Title of host publication2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538648810
DOIs
StatePublished - Apr 26 2018
Event2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Florence, Italy
Duration: May 27 2018May 30 2018

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
Volume2018-May
ISSN (Print)0271-4310

Other

Other2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018
CountryItaly
CityFlorence
Period5/27/185/30/18

Fingerprint

Digital to analog conversion
Capacitors
Comparator circuits
Electric potential
Metals
Authentication
Entropy
Hardware
Oxides
Hardware security

Keywords

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

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 proceedingConference 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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