Blockchain for securing distributed IIoT or edge device data at rest
US10819722B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2018 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Jan 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/121
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of securing data in an industrial processing facility (IPF) includes creating a private blockchain (PB) using a OPC UA standard functionality and storing the PB in an OPC UA address space adding it to an OPC UA communication protocol framework including edge-nodes coupled to a cloud-based or edge-located data storage. The edge-nodes are PB participant nodes, and a regulator or leader assigns them a single role as a blockmaker, block voter, or observer. The hash in the public ledger is updated once a new block is validated by a majority of the block voters, and the new block is propagated to all PB participant nodes. The regulator, leader or observer utilizes a time bound majority voting consensus to determine whether the PB participant nodes come to a consensus on a current state in the storage medium, and if a consensus the new block added to the public ledger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.