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|A large scale comprehensive evaluation of single-slice ring oscillator and PicoPUF bit cells on 28nm Xilinx FPGAs
|Engineering::Electrical and electronic engineering
|Gu, C., Chang, C.-H., Liu, W., Hanley, N., Miskelly, J., & O’Neill, M. (2019). A large scale comprehensive evaluation of single-slice ring oscillator and PicoPUF bit cells on 28nm Xilinx FPGAs. ASHES'19: Proceedings of the 3rd ACM Workshop on Attacks and Solutions in Hardware Security Workshop, 101-106. doi:10.1145/3338508.3359570
|ASHES'19: Proceedings of the 3rd ACM Workshop on Attacks and Solutions in Hardware Security Workshop
|Many field programmable gate array (FPGA)-based security primitives have been developed, e.g., physical unclonable functions (PUFs) and true random number generator (TRNG). To accurately evaluate the performance of a PUF or other security designs, data from a large number of devices are required. A slice is the smallest reconfigurable logic block in an FPGA. The maximum or minimum entropy, exploitable from each slice of an FPGA, is an important factor for the design of a single-bit disorder-based security primitive. Previous research has shown that the locations of slices can impact the quality of delay-based PUF designs implemented on FPGAs. To investigate the effect of the placement of each single-bit PUF cell free from the routing resource constraint between slices, single-bit ring oscillator (RO) and identity-based PUF design (PicoPUF) cells that can each be fully fitted into a single slice are evaluated. 217 Xilinx Artix-7 FPGAs has been employed to provide a large-scale comprehensive analysis for the two designs. This is the first time two different single slice based security entities have been investigated and compared on 28nm Xilinx FPGA. Experimental results, including uniqueness, uniformity, correlation, reliability, bit-aliasing and min-entropy, based on 4 different floorplan locations are presented. The experimental results demonstrate that the lower the correlation between devices, the higher the minentropy and uniqueness for both designs on the FPGAs. While the implementation location of both designs on the FPGA affects their performances, the overall min-entropy, correlation and uniqueness of PicoPUF are slightly higher than those of RO. All other metrics, including uniformity, bit-aliasing and reliability of the PicoPUF are slightly lower than those of the RO. The raw data for the PicoPUF design is made publicly available to enable the research community to use them for benchmarking and/or validation.
|School of Electrical and Electronic Engineering
|Centre for Integrated Circuits and Systems
|© 2019 Association for Computing Machinery (ACM). All rights reserved. This paper was published in ASHES'19: Proceedings of the 3rd ACM Workshop on Attacks and Solutions in Hardware Security Workshop and is made available with permission of Association for Computing Machinery (ACM).
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