Effect of Loop Positions on Reliability and Attack Resistance of Feed-Forward PUFs

Satya Venkata Sandeep Avvaru, Keshab Parhi

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

2 Scopus citations

Abstract

In this paper, we study multiplexer (MUX) based feed-forward (FF) physical unclonable functions (FF PUFs) with 64 stages. This paper provides the first systematic empirical analysis of the effect of FF PUF design choices on their performance by evaluating various FF PUF structures in terms of their reliability and attack resistance. To this end, the change in reliability is studied by varying the location of FF loops and varying the number of loops within the circuit. It is observed adding more loops and arbiters makes PUFs more susceptible to noise; FF PUFs with 5 intermediate arbiters can have reliability values that are as low as 81%. It is further demonstrated that a soft-response thresholding strategy can significantly increase the reliability during authentication to more than 96%. We also show that attack resistance can change as a consequence of relative positioning of the FF loops. In case of double-loop FF PUFs (one intermediate arbiter with two utputs), it is shown that appropriately choosing the input and output locations of the FF loops, the number of challenge-response pairs required to attack can be increased by 7 times and can be further increased by 15 times if two intermediate arbiters are used.

Original languageEnglish (US)
Title of host publicationProceedings - 2019 IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019
PublisherIEEE Computer Society
Pages366-371
Number of pages6
ISBN (Electronic)9781538670996
DOIs
StatePublished - Jul 2019
Event18th IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019 - Miami, United States
Duration: Jul 15 2019Jul 17 2019

Publication series

NameProceedings of IEEE Computer Society Annual Symposium on VLSI, ISVLSI
Volume2019-July
ISSN (Print)2159-3469
ISSN (Electronic)2159-3477

Conference

Conference18th IEEE Computer Society Annual Symposium on VLSI, ISVLSI 2019
CountryUnited States
CityMiami
Period7/15/197/17/19

Keywords

  • Attack Resistance
  • Feed Forward PUFs
  • Hardware Security
  • Physical Unclonable Functions
  • Reliability
  • Security
  • Soft Response

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