Magnetic tunnel junction resistance comparison based physical unclonable function
US9489999B2 · kind B2 · utility
8Cited by
3References
30Claims
0Family size
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Key dates
| Filing date | Nov 26, 2014 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Nov 29, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method includes coupling a first magnetic tunnel junction (MTJ) element and a second MTJ element to a comparison circuit. The method also includes comparing, at the comparison circuit, a first resistance of the first MTJ element to a second resistance of the second MTJ element. The method further includes generating a first physical unclonable function (PUF) output bit based on a result of comparing the first resistance to the second resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.