A physically unclonable function using NV diamond magnetometry and micromagnet arrays

Kehayias, Pauli; Bussmann, Ezra; Lu, Tzu-Ming; Mounce, Andrew M.

doi:10.1063/5.0005335

A physically unclonable function using NV diamond magnetometry and micromagnet arrays

Journal Article · Wed May 27 00:00:00 EDT 2020 · Journal of Applied Physics

DOI:https://doi.org/10.1063/5.0005335· OSTI ID:1634799

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Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

A physically unclonable function (PUF) is an embedded hardware security measure that provides protection against counterfeiting. In this article, we present our work on using an array of randomly magnetized micrometer-sized ferromagnetic bars (micromagnets) as a PUF. We employ a 4μm thick surface layer of nitrogen-vacancy (NV) centers in diamond to image the magnetic field from each micromagnet in the array, after which we extract the magnetic polarity of each micromagnet using image analysis techniques. Finally, after evaluating the randomness of the micromagnet array PUF and the sensitivity of the NV readout, we conclude by discussing the possible future enhancements for improved security and magnetic readout.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000; NA0003525

OSTI ID:: 1634799

Alternate ID(s):: OSTI ID: 1630976
OSTI ID: 1644060

Report Number(s):: SAND--2020-5536J; 686366

Journal Information:: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 20 Vol. 127; ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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