Digitally certified stationery
US7996677B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2006 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Apr 24, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/6272
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for digitally certified stationery are described. In one aspect, a stationery granting authority (SGA) receives a request from a user to generate a document. If the user is authorized for the requested document, the SGA generates a certificate with credentialing information from data in the request. The SGA generates a first digital signature from some of the credentialing information. The SGA communicates the certificate to the user for editing and distribution as the document. A recipient of the document determines whether the document is “official” by contacting a specified service to provide certain information from the document. The verification service computes a second digital signature from the provided information for comparison to the first digital signature. If there is a match, the service notifies the recipient that the document is valid/official. Otherwise, the recipient is notified that the document is not valid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.