Method and apparatus for implementing electronic seal
US8386793B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2009 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Jun 16, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method provided herein includes the following steps: storing seal data of an electronic seal, a digital certificate, electronic signature program and a private key of a sealer in an external portable apparatus; performing a Hash conversion to a file to be sealed and the seal data of the electronic seal to generate a data digest, wherein the file to be sealed is a layout file; sealing, in the portable apparatus, the data digest using the private key of the sealer and the electronic signature program to generate an electronic signature result; and combining the file to be sealed, the seal data of the electronic seal, the digital certificate and the electronic signature result to generate a seal combination file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.