Method and apparatus for digital signature authentication
US6751318B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 2001 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Apr 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/725
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention improves speed and reduces complexity in a digital signature scheme that uses elliptic algebra. The signature scheme generates two points that are compared. If the points do not match, the signature is not authentic. The present invention reduces computations by comparing only the x coordinates of the two generated points. The invention provides a scheme for deducing the possible values of the x-coordinate of a sum of two points using only the x coordinates of the original two points in question. The present invention provides a scheme that limits the possible solutions that satisfy the equation to two (the authentic signature and one other). Because of the large number of possible inauthentic solutions, the chance of a false authentic signature is statistically insignificant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.