Paper Info
Title
Fast and Reliable PUF Response Evaluation from Unsettled Bistable Rings
Abstract
Bistable ring (BR) based strong PUFs are promising candidates for lightweight authentication applications. It has been observed that a good '0'/'1'-balance of their responses correlates with longer settling times. This is problematic, since the state-of-the-art evaluation method requires the BR to be settled in order to generate a reliable PUF response. We show that settling times can easily extend beyond 100 milli seconds for 70 percent of the responses in the TBR PUF, which is a BR-based PUF with good '0'/'1'-balance characteristics. Hence, it is practically impossible to wait for all BRs to settle, which results in a reliability penalty. In order to solve this problem, we present three new methods, which allow the evaluation of unsettled BRs with increased reliability compared to the state-of-the-art method. We were able to achieve evaluation times down to 1 micro second and improve response reliability from 80 percent to up to 98.5 percent. This enables the fast and reliable use of BR-based PUFs in strong PUFs applications.
Year
DOI
Venue
2017
10.1109/DSD.2016.68
2016 Euromicro Conference on Digital System Design (DSD)
Keywords
DocType
Volume
Physical Unclonable Function,Unsettled Bistable Ring,Twisted Bistable Ring PUF,FPGA
Journal
52
ISBN
Citations 
PageRank 
978-1-5090-2818-4
0
0.34
References 
Authors
9
2
Name
Order
Citations
PageRank
Robert Hesselbarth1111.65
Georg Sigl244762.13