Method of changing key fragments in a multi-step digital signature system
US6411716B1 · kind B1 · utility
99Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1998 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Dec 23, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multi-step digital signature system and method is provided having a distributed root certifying authority 20. Messages received at the root certifying authority 20 are distributed to root certifying authority members 22-30 who attach partial signatures to the message using root key fragments. In the system and method provided, the system adapts to system events such as the addition or removal of key fragment holders, the need to modify key fragments, etc., by changing key fragments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.