Delegation of electronic signature by multi-agent cryptography
US7581109B2 · kind B2 · utility
13Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2003 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | Nov 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
For signing of data by a given one of M delegates mandated by N titleholders, where M≧2 and N=1 or M=1 and N≧2, the terminal of the given delegate reads in a delegation server information on the delegates and the titleholders of the group thus constituted. The data and the information read and a private key of the given delegate are applied to a cryptographic algorithm to produce a signature which therefore carries a cryptographic delegation mark. The data, information, and signature are transmitted to a user terminal that can trace the characteristics of the signature delegation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.