Security device generating key based on physically unclonable function and method of operating the same
US11924359B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2022 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Oct 25, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A security device generates a key based on a physically unclonable function (PUF). The security device includes a physically unclonable function (PUF) block, an integrity detector, and a post processor. The PUF block outputs a plurality of first random signals and a plurality of corresponding first inverted random signals each having a logic level opposite to that of each of the plurality of corresponding first random signals. The integrity detector determines data integrity of the plurality of first random signals by using the plurality of first random signals and the plurality of corresponding first inverted random signals. The post processor generates a first row key that includes validity signals satisfying the data integrity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.