System and method for enforcement of correctness for key derivation
US10630471B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 8, 2018 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Nov 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/46
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The subject matter discloses a system for enforcing correctness of a derivation key, comprising multiple computerized nodes, comprising a storage module configured to store a share of a key used as an input of a function generating the derivation key, a communication module configured to exchange information between the multiple computerized nodes, and a processing module configured to receiving a request to create the derivation key, performing an MPC process between the multiple computerized nodes, said MPC process is performed multiple times, in each time the MPC process comprises receiving the key shares as input, randomly selecting a function, outputting the outputs of the selected function to the multiple computerized nodes, the multiple computerized nodes lack access to the selected function, the multiple computerized nodes perform computations on the received outputs and exchange outputs of the computations to estimate correction of the key shares inputted into the MPC process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.