Long-term authenticity proof of electronic documents
US8132013B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2005 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Jun 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems, methods and computer program products are disclosed for providing long-term authenticity proof of an electronic document having a digital signature, wherein the electronic document is digitally signed with a digital signature and the electronic document and its digital signature are archived in a data archive. Such methods, systems and computer program products may store the electronic document in a first data archive and store a hash value of the electronic document in a second data archive different from the first data archive. Long-term authenticity and integrity may be achieved by periodically re-signing, particularly time stamping the hash value in the second data archive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.