Methods and apparatus for cryptographic signature generation
US11924357B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2022 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Sep 8, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3257
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of generating a digital signature. The method comprises calculating a first random number and, based on second and third random numbers, first and second modified versions thereof. A curve point on an elliptic curve is determined based on a base point and the first modified version. A first signature part is calculated based on the curve point. Based on the second and third random numbers, the modified versions of the first random number, data to be signed, the first signature part, and a private key, a second signature part and a check value for the second signature part are calculated. The second signature part is compared with the check value for the second signature part and, responsive to the check value for the second signature part matching the second signature part, a cryptographic signature is output comprising the first signature part and the second signature part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.