DESIGN OF LIGHTWEIGHT PUF CIRCUIT BASED ON SELECTABLE CROSS-COUPLED INVERTERS  

作　　者：Zhang Xuelong Li Jianrui Wang Pengjun Zhang Yuejun 

机构地区：[1]Institute of Circuits and Systems, Ningbo University

出　　处：《Journal of Electronics(China)》2014年第6期513-518,共6页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Nos.61474068,61404076,61274132);the Zhejiang Provincial Natural Science Foundation of China(No.LQ14F040001);the Doctoral Program of Higher Education of China(No.20113305110005)

摘　　要：By analyzing the principle of process variations, a lightweight Physical Unclonable Function （PUF） circuit based on selectable cross-coupled inverters is proposed in this paper. Firstly, selectable cross-coupled inverters are chosen for two delay paths. Simultaneously, the circuit takes challenge signal to control each delay path. The PUF cell circuit is implemented in Semiconductor Manufacturing International Corporation （SMIC） 65 nm CMOS technology and the layout area is 2.94μm × 1.68μm. Then the 64-bit PUF circuit is achieved with the cascade connection of cell circuits. The simulation results show that the randomness is 49.4% and the reliability is 96.5%. Compared to the other works, this PUF circuit improves the encrypt performance and greatly reduces the area.By analyzing the principle of process variations, a lightweight Physical Unclonable Function(PUF) circuit based on selectable cross-coupled inverters is proposed in this paper. Firstly, selectable cross-coupled inverters are chosen for two delay paths. Simultaneously, the circuit takes challenge signal to control each delay path. The PUF cell circuit is implemented in Semiconductor Manufacturing International Corporation(SMIC) 65 nm CMOS technology and the layout area is 2.94 mm × 1.68 mm. Then the 64-bit PUF circuit is achieved with the cascade connection of cell circuits. The simulation results show that the randomness is 49.4% and the reliability is 96.5%. Compared to the other works, this PUF circuit improves the encrypt performance and greatly reduces the area.

关 键 词：LIGHTWEIGHT Physical Unclonable Punction （PUF） Cross-coupled inverter Circuit design 

分 类 号：TP331[自动化与计算机技术—计算机系统结构]