Adaptive multi-step digital signature system and method of operation thereof
US5867578A · kind A · utility
207Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1996 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Aug 19, 2016 |
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.