Method for encrypting data of a field device
US12284266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2021 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Dec 28, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/805
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for encrypting data of a field device includes steps of generating data using the field device, encrypting the data by the field device using a non-homomorphic encryption method using a first key, transmitting the non-homomorphically encrypted data to a first instance, and storing the non-homomorphically encrypted data in the first instance. The method also includes retrieving part of the non-homomorphically encrypted data stored in the first instance by a second instance, and decrypting the retrieved, non-homomorphically encrypted data using the second instance the first key. Further, the data is encrypted by the second instance using a homomorphic encryption method using a second key, wherein the homomorphically encrypted data is transmitted to the first instance or to a third instance and stored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.