Secure file sharing using semantic watermarking
US10846377B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 2018 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Jan 2, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/146
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for identifying a source of leak of confidential information are described herein. The methods and systems related to a file sharing system that may generate a copy of a shared file that is unique each user. The file management system may determine a plurality of differences within each version of the file. A table of differences is maintained by the file management system, for comparison against any leaked version of the file. The file management system compares each generated version of the file against previously generated versions to ensure enough differences are included to determine a unique identity of the user associated with any leaked file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.