Distributed validation of digitally signed electronic documents
US9800416B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2016 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Jan 29, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods are presented for distributed validation of a digitally signed electronic document. A computing device accesses both a representation of the electronic document and a digital signature for the electronic document that includes a digest generated by the digital signature's creator by applying a one-way function to the electronic document. The computing device applies the same one-way function to the accessed representation of the electronic document to generate a new digest, and includes both the digital signature and the new digest in a request sent to a separate validation server. The request does not include the electronic document. The validation server generates validation results that depend on comparing the digest from the digital signature with the new digest, and that do not depend on having the electronic document available to the validation server. The computing device receives the validation results from the separate validation server.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.