Providing digital signature and public key based on shared knowledge
US7593527B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 2005 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Oct 9, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A public key and digital signature is provided using a private key of a public-private key pair in an elliptic curve digital signature algorithm (ECDSA) by: identifying domain parameters of an elliptic curve for use in elliptic curve cryptography, the domain parameters including an initial generating point; transforming the generating point into a new generating point as a deterministic function; generating the public key as a deterministic function of the private key and the domain parameters, in which the new generating point is substituted for the initial generating point; and generating the digital signature as a function of the private key and the domain parameters, in which the new generating point is substituted for the initial generating point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.