FPGA Realization of Physical Unclonable Function Based on Cross-coupling Circuit

doi:10.3969/j.issn.1671-1122.2022.03.006

Abstract

Abstract:

With the rapid increase in number of IoT devices and the continuous expansion of the applications range, the issue of information security of IoT devices has attracted more and more attention. PUF provided new ideas for solving data security issues in the operation of IoT devices. In order to solve the problem of insufficient number of challenge-response pairs in weak PUF and excessive resource consumption in strong PUF, a strong PUF consisting of the weak PUF, BCH code and LFSR is proposed, which has the advantages of high reliability, high uniqueness and less resources. The strong PUF with 128-bit response was implemented on a 40nm Alinx FPGA. With a 128-bit BCH code structure, the reliability of the strong PUF output response reaches 100%, and the uniqueness reaches 49.83%. Compared with L-PUF, the reliability of this PUF is increased by 3.7%, and the uniqueness is increased by 0.08%.

Key words: information security, physical unclonable function, FPGA, linear feedback shift register

CLC Number:

TP309

LI Li, LI Zequn, LI Xuemei, SHI Guozhen. FPGA Realization of Physical Unclonable Function Based on Cross-coupling Circuit[J]. Netinfo Security, 2022, 22(3): 53-61.

Figures/Tables 19

References 29

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D	CLK	PUF	Q	FQ
0	0	1	0	1
0	1	0	1	0
0	1	1	1	1
1	0	1	1	0
1	1	0	0	1
1	1	1	0	0
0	0	0	PUF_OUT	~PUF_OUT
1	0	0	PUF_OUT	~PUF_OUT

设计	A-PUF^[26]	A-PUF^[26]	FF-APUF^[27]	L-PUF^[26]	本文R-PUF
输出响应/bit	64	64	64	64	128
实现方式	TSMC 180 nm	Artix-7	Artix-7	Artix-7	PGL22G
硬件开销	1212μm• 1212μm	129•64 SLICEs	44•64 SLICEs	210 SLICEs	2238CLMs

	可靠性	唯一性	统一性
A-PUF^[29]	99.20%	23.00%	55.69%
RO-PUF^][19]	96.54%	48.60%	—
D-PUF^[28]	98.58%	49.40%	53.39%
FF-APUF^[27]	97.10%	—	40.00%
L-PUF^[26]	96.30%	50.25%	49.80%
本文C-PUF	98.56%	46.32%	49.70%
本文R-PUF	100%	49.83%	51.06%
理想值	100%	50%	50%