Circuit apparatus and methods for PUF source and generating random digital sequence
US12149641B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Nov 4, 2021 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Jan 8, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A triggerable circuitry for a Physically Unclonable Function (PUF) source and true random number generator comprises an array of metastable latches PUF cells units that produce output states in racing configuration dependent on manufacturing variations and noise fed into a counting circuit. The technology as a single circuit extracts detected random bits' states for true random numbers generation, different each time when requested, and is able to feed a PUF recovery system that will use the fairly static bits' patterns of the measured circuit although each time different.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.