Design of current type PUF based on current mirror
Yuejun Zhang · Journal of Circuits and Systems · 2013
By researching the Physical Unclonable Functions(PUF) and the current mirror,a current type PUF based on current mirror is proposed.Firstly,multipath currents are generated from multiple current mirrors.Then,two path currents are chosen as the input of the current type sense amplifier.After comparing the two currents,it outputs a random state.Following the fully custom flow,PUF is designed in SMIC 65nm technology and the minimum layout area of the PUF cell is 2.59μm×1.51μm.The outputs of the PUF are analyzed via Monte Carlo simulations under various supply voltages and temperatures by the tool of Spectre.Randomness and robustness of the PUF are observed from the experiment results.It can be effectively used for secret key generation and device authentication.