Method for cryptographic signature of a datum, associated electronic device and associated computer program
US12212688B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2023 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Jun 5, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for cryptographic signature of a datum comprises determining: a signature point equal to the addition of elements equal to a derived first point and of number equal to a first scalar; a second scalar by subtracting, from the product of the first scalar and of a selected scalar, the product of a third and of a fourth scalar; another signature point equal to the addition of elements equal to a selected point and of number equal to the second scalar, and of elements equal to a derived second point and of number equal to the fourth scalar; and a signature portion based on a private key, on the first scalar, on a coordinate of the signature point and on the datum. The derived first and second point are respectively equal to the addition of elements equal to a generator point and of number equal to a fifth and to the third scalar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.