Fault-tolerant aggregation of encrypted data in a star network
US10069631B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2016 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Oct 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/46
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
One embodiment provides a system that facilitates encrypted-domain aggregation of data in a star network. During operation, the system receives a set of ciphertexts, representing respective encrypted polynomial shares, of an input value from each participant in a plurality of participants. Each ciphertext in the set of ciphertexts is associated with a specific participant in the plurality of participants. The system computes an encrypted partial value for each participant by aggregating in the encrypted-domain a respective ciphertext associated with that participant received from the plurality of participants and sends a message comprising the encrypted partial value to that participant. This encrypted partial value is encrypted based on a public key of a corresponding participant. The system receives a decrypted partial value from each participant and computes a target value based on a set of decrypted partial values received from a set of participants in the plurality of participants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.