Method for generating on-board a cryptographic key using a physically unclonable function
US11323256B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2019 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Apr 24, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3278
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, cryptographic device, and computer readable memory with instructions, for generating a cryptographic key from at least one prime number, by performing during runtime of the cryptographic device by obtaining from memory a challenge and at least one associated increment number, generating a seed by applying a Physically Unclonable function to said obtained challenge, generating at least one prime number from said generated seed by performing said cryptographic prime numbers generation algorithm and by performing therein as many incrementation steps as said obtained at least one increment number, and generating the cryptographic key from the generated prime number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.