Common data determining methods, apparatuses, and systems for protecting privacy
US12400027B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2023 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Feb 29, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/64
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, apparatuses, and systems for protecting privacy are described. In an example, a first party encrypts a first data set, and sends a single-encrypted full data set to a second party. The second party re-encrypts the single-encrypted full data set to obtain a double-encrypted full data set, obtains a single-encrypted sampling data set, and sends the single-encrypted sampling data set to the first party. The first party encrypts the single-encrypted sampling data set to obtain a double-encrypted sampling data set, determines an intersection of the double-encrypted full data set and the double-encrypted sampling data set, performs upsampling on a complement other than the intersection in the double-encrypted sampling data set to obtain a noise-added intersection, and sends an element index of the noise-added intersection to the second party. The second party determines related information of common data based on the element index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.