User device and electronic device for sharing data based on block chain and homomorphic encryption technology and methods thereof
US11316657B2 · kind B2 · utility
0Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2019 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Apr 8, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data sharing method of a user device is provided. The data sharing method includes receiving, from a server device storing information, a private key corresponding to the information, performing a homomorphic encryption of the private key by a homomorphic encryption key provided from the server device, and generating a switch key, and uploading the switch key to a blockchain system. Accordingly, a more effective and clear data sharing is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.