IP-level implementation of a resistance-based physical unclonable function

A complete on-chip implementation of a bit generation engine using a physical unclonable function is presented in this paper. The bit generation engine, called the JellyFishPUF (JFP), provides keying material for encryption, authentication bitstrings for anti-counterfeiting and true random number generation. JFP utilizes a Physical Unclonable Function that is based on resistance variations in metals and transistors. JFP is fully implemented as a layout in an area of 0.125 mm² using a 65 nm technology, which includes a 2KB SRAM for public data storage. The bitstrings produced from Monte Carlo SPICE-level simulations of the entropy source in combination with logic simulations of the digital engine are evaluated with respect to randomness, uniqueness and stability metrics across a wide range of temperature and voltage corners.