Post-Layout Simulation of Quasi-Adiabatic Logic Based Physical Unclonable Function

Silicon based Physical Unclonable Function (PUF) is a popular hardware security primitive for mitigating security vulnerabilities. Recently, Quasi-adiabatic logic based physical unclonable function (QUALPUF) was first proposed by Kumar and Thapliyal. QUALPUF has ultra low-power dissipation; hence it is suitable to implement in low-power portable electronic devices such RFIDs, wireless sensor nodes, etc. In this paper, we present the post-layout simulation results of the 4-bit QUALPUF for low-power portable electronic devices. To evaluate the uniqueness and reliability, the 4-bit QUALPUF is implemented in 0.18 um standard CMOS process with 1.8 V supply voltage. The QUALPUF occupies 58.7x15.7 um2 of layout area. The post-layout simulation results illustrate that the 4-bit QUALPUF has good uniqueness and reliability with 29.73 fJ/cycle/bit energy consumption.