Long-life digital certification for publishing long-life digital content or the like in content rights management system or the like
US7549051B2 · kind B2 · utility
14Cited by
56References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2005 |
| Grant date | Jun 16, 2009 |
| Priority date | — |
| Expiry date | Jun 7, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/68
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digital certificate is employed to produce a digital signature for a digital construct. In the digital certificate is set forth a certificate validity period defining for the digital certificate a time period during which the digital certificate is to be honored as valid for producing digital signatures, and a signature validity period defining for each digital signature produced based on the digital certificate a time period during which the digital signature is to be honored as valid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.