Blockchain-based user privacy data providing methods and apparatuses
US11347888B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2021 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jun 29, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0478
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A blockchain-based user privacy data providing method and apparatus is provided. The method includes receiving a data consumption request from a data consumer, where the data consumption request requests user privacy data of a target user, the user privacy data includes personal data that is pre-encrypted and uploaded to a trusted execution environment (TEE), and the TEE is constructed in a blockchain node; performing predetermined verification on the data consumption request in the TEE based on request body data corresponding to the data consumption request using a smart contract deployed in the blockchain to obtain a corresponding predetermined verification result; if the predetermined verification result satisfies a verification success condition, obtaining target privacy data for the data consumption request, and sending the encrypted target privacy data to the data consumer, where the target privacy data is obtained in the TEE based on the user privacy data stored in the blockchain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.