Registration of a PUF signature and regeneration using a trellis decoder
US12081238B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2022 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | Dec 20, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/1111
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A physically unclonable function includes a circuit that translates a normally distributed sequence of raw sample into a sequence of uniformly distributed binned values across sub-bins of bins. Helper circuitry generates centering values and parity bits based on binned values generated during registration. Each centering value is associated with a raw sample value corresponding to a binned value and indicates an offset of a sub-bin in one of the bins. A distance calculator generates a set of distances from each raw sample value based on the centering value associated with the raw sample value. Each distance indicates a difference between the respective raw sample value and a raw sample value equivalent to a midpoint of a sub-bin offset by the associated centering value in a bin. A trellis decoder generates a PUF signature based on the candidate symbols, sets of distances, and parity bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.