Privacy preserving computation protocol for data analytics
US12067129B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2018 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | May 27, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/46
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for privacy-preserving computation of aggregated private data of a group of client devices comprises: a server selecting at least t devices; being provided with key information including an encryption key e and a decryption key of a homomorphic threshold cryptosystem; obtaining a random value ri and being provided with the random values of the other devices in the group; the server transmitting client indices identifying selected devices, and signalling a device for aggregate encrypted data of each of the selected devices; the server receiving randomized encrypted data and an associated decryption share from each selected device, the decryption shares being configured such that decryption key d can be reconstructed on the basis of t decryption shares; and, the server aggregating the received randomized encrypted data of the selected devices using the homomorphic properties and using the decryption shares for decrypting the aggregated randomized encrypted data into cleartext.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.