Auditable system and methods for secret sharing
US11018856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2019 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Sep 11, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Parties communicate input values to a central entity by first decomposing them according to a chosen operation into share values, which are sent either directly or, in a transformed form such as being hashed and/or encrypted, via a bulletin board data structure, to respective nodes, such that no node receives the input value itself. The nodes then combine the share values using the operation and pass these respective node values to the central entity for computation of a global value. The operation of the parties and of the nodes may be made verifiable by aggregating the share values within a party or the received share values within a node using a data and computational structure such as a hash tree or skip list. Digital signing and timestamping may also be applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.