Time stamping method employing multiple receipts linked by a nonce
US7519824B1 · kind B1 · utility
46Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1999 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Jun 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for time stamping a digital document employs a two-part time stamp receipt. The first part of the time stamp receipt includes identifying data associated with a document and a nonce. The second part of the time stamp receipt includes a time indication and the nonce. The nonce serves as a link between the first and second parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.