Security device for generating masking data based on physically unclonable function and operating method thereof
US11689376B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Sep 14, 2020 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Jun 17, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A security device and an operating method thereof, which generate masking data for masking a key on the basis of a physically unclonable function (PUF), are provided. The security device includes a PUF circuit including a plurality of PUF cells outputting random key data and masking data, a key generator configured to generate a key through post-processing performed on the random key data, and a masking module configured to mask and store the key by using the masking data, wherein the random key data and the masking data are generated by different PUF cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.