Key generation unit with physical unclonable function, key generator and circuit system
US12341914B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Nov 2, 2022 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Jun 28, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A key generation technology of the present disclosure does not additionally set a combinational logic circuit on an original path of a scanning flip-flop, but utilizes a plurality of existing combinational logic circuits in a circuit system to generate multiple values of a key. Correspondingly, a key generation unit used in the key generation technology has two data flip-flops. One of the data flip-flops is used as a data flip-flop in one of a plurality of scanning flip-flops. The other data flip-flop is to obtain a node data signal of a node in the corresponding combinational logic circuit as one of the values of the key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.