Time-domain Physical Unclonable Functions

D.J. de Ruiter, D.P. Stellinga, L. van der Hoeven, M.C. Velsink, P.W.H. Pinkse

Research output: Contribution to conferencePosterAcademic

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One can replace one-way functions (also known as hash functions) commonly
found in cryptography with physical processes, known as physical unclonable functions (PUFs). Optical PUFs have been devised based on the complex response of
scattering media to the spatial wavefront. However, such PUFs are intrinsically
unpractical for use over larger distances. In this project, we design PUFs with a
time-domain scattering response (tPUF), whose readout can be performed over a
single spatial mode, in our case an optical fiber. These tPUFs are networks of microring resonators, whose transfer function is highly complex and vary strongly from realization to realization as a result of manufacturing imperfections. These
devices are developed for pulses with a very low number of average photons per
pulse which negates any attempts at reading out the pulse shape in transit, thereby
eliminating eavesdropping. These PUFs can then be used for a variety of applications
in asymmetric cryptography, such as proof of identity and secure messaging.
Original languageEnglish
Number of pages1
Publication statusPublished - Oct 2023
Event46th Annual Meeting NNV AMO 2023 - Egmond aan Zee, Netherlands
Duration: 10 Oct 202311 Oct 2023
Conference number: 46


Conference46th Annual Meeting NNV AMO 2023
CityEgmond aan Zee
Internet address


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