A highly reliable butterfly PUF in SRAM-based FPGAs
Xiumin Xu, Huaguo Liang, Zhengfeng Huang, Cuiyun Jiang, Yiming Ouyang, Xiangsheng Fang, Tianming Ni, Maoxiang Yi · IEICE Electronics Express · 2017
This paper presents a butterfly physically unclonable function (PUF) implementation in SRAM-based field programmable gate arrays (FPGAs). To avoid output instability, we propose a delay difference test to identify reliable slices (mapped to which butterfly PUF cells are highly reliable) and then PUF reliability is significantly improved by selective mapping PUF cells to reliable slices, which is validated in experimental results.