Multiple Scattering Layers as Physical Unclonable Functions for Optical Wireless Communication

Physical unclonable functions (PUF) are a promising solution for digital encryption in the physical layer[1]. A PUF takes advantage of the large number of degrees of freedom of a macroscopic object to make a complex encrypted key. In optical communication, PUFs have been proposed for authentication for quantum communication systems[2], using a scattering layer as a PUF. [3]