A compact ultra-low power physical unclonable function based on time-domain current difference measurement

摘要

In this paper, we present a novel physical unclonable function (PUF) based on time-domain current difference measurement. By employing the aforesaid simplified current-mode PUF architecture, the proposed implementation completely removes the need of complex error correction circuitry, which is widely adopted in the previously demonstrated implementations. This leads to significant reduction of both the overall power consumption and the required chip area. In addition, the proposed implementation exhibits a superior bit error rate (BER) as low as 0 for the typical case scenario and 1.56% for the worst case scenario, respectively. Featuring an ultra-low power consumption of 11.29μW and an averaged silicon area of 13310μm2, the proposed implementation is validated by our reported extensive post-layout simulation results with UMC 0.18μm standard complementary-metal-oxide-semiconductor (CMOS) technology.