Facilitating digital signature based on ephemeral private key
US7490239B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 2005 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Aug 28, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Facilitating communication using a digital signature includes: receiving user input data (UID); generating a first key as a deterministic function of the UID; clearing the UID; generating a second key as a deterministic function of the first key; clearing the first key following generation of the second key; and exporting the second key. Neither the UID nor the first key is exported. Thereafter, a digital signature is generated by again receiving the UID; regenerating the first key using the deterministic function and the UID; clearing the UID; generating a digital signature as a function of the regenerated first key; clearing the regenerated first key following generation of the digital signature; and exporting the generated digital signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.