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

• 作 者: Zhang Xuelong Li Jianrui Wang Pengjun Zhang Yuejun
• 机 构: Institute of Circuits and Systems, Ningbo University,
• 出 处: Journal of Electronics(China)
• 发表日期: 2014年06期
• 关键词: lightweight layout cascade challenge intrinsic chosen amplifier overhead authent

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.

First, selectable cross-coupled inverters are chosen for two delay paths. Simultaneously, the circuit takes challenge 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 Compared to the other works, this PUF circuit improves the encrypt performance and greatly reduces the area.