Unrolled PRINCE Cipher based Glitch Physically Unclonable Function

Abstract

Physically unclonable functions (PUFs) have attracted attention as authentication technologies in integrated circuits (ICs). A PUF utilizes IC manufacturing variation as a unique device's ID. Several PUFs have been proposed, and a glitch PUF is superior to other PUFs in terms of resistance against malicious attacks. A glitch PUF uses the variation of glitch waveforms in AES's S-BOX circuit which requires large area to embed, while IoT devices have strict area constraint. It is important to satisfy the area constraints when a glitch PUF is applied to IoT devices. This study proposes a new glitch PUF using a lightweight cipher which can be embedded into small area. The proposed PUF is based on an unrolled PRINCE low-latency cipher. Experiments using a field programmable gate array (FPGA) prove the validity of the proposed PUF.