TY - GEN
T1 - Fast and Reliable PUF Response Evaluation from Unsettled Bistable Rings
AU - Hesselbarth, Robert
AU - Sigl, Georg
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/10/26
Y1 - 2016/10/26
N2 - 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.
AB - 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.
KW - FPGA
KW - Physical Unclonable Function
KW - Twisted Bistable Ring PUF
KW - Unsettled Bistable Ring
UR - https://www.scopus.com/pages/publications/84999015217
U2 - 10.1109/DSD.2016.68
DO - 10.1109/DSD.2016.68
M3 - Conference contribution
AN - SCOPUS:84999015217
T3 - Proceedings - 19th Euromicro Conference on Digital System Design, DSD 2016
SP - 82
EP - 90
BT - Proceedings - 19th Euromicro Conference on Digital System Design, DSD 2016
A2 - Kitsos, Paris
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 19th Euromicro Conference on Digital System Design, DSD 2016
Y2 - 31 August 2016 through 2 September 2016
ER -