Micromagnet PUF readout using a quantum diamond microscope
US11796612B1 · kind B1 · utility
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14Claims
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Key dates
| Filing date | Oct 5, 2021 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Oct 12, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/95
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A physically unclonable function (PUF) and a method of reading it are provided. The PUF is constituted by a microfabricated array of randomly polarized micromagnets disposed on a substrate. The PUF can be read by creating a magnetization map of the PUF from the signal output of a quantum diamond microscope (QDM) and converting the magnetization map to a numerical sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.