A Novel Aging Tolerant RO-PUF for Low Power Application
Soumya Sahoo, Sudeendra Kumar, Kamalakanta Mahapatra, Ayaskanta Swain · 2016
Physical Unclonable Functions (PUFs) is one of the popular security primitives for IC which is mainly used for identification and cryptographic application. Although various environmental parameter affect its performance but aging causes permanent degradation in its reliability. This paper presents a modified aging tolerant architecture for ring oscillator based PUF (RO-PUF) in which the conventional CMOS based ROs are replaced by modified RO. The proposed architecture for RO shows high tolerance to aging as compared to existing RO. Further the proposed RO minimizes the overall power consumption of RO-PUF. Simulation results in 90 nm technology shows improvement in power consumption and security metrics of proposed RO-PUF as well as it is more area efficient as compared to existing aging tolerant RO-PUF.