Cryptographic system arranged for key sharing
US10439800B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2015 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Jan 17, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/30
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A cryptographic system is provided comprising multiple configuration servers (200, 201, 202) arranged to configure multiple network devices (300, 350, 360) for key sharing. Each configuration server comprising a computation unit (220) arranged to compute local key material for the network device from root key material specific to the configuration server and the network device identity number of the network device that is being configured. At least two configuration servers of the multiple configuration servers provide computed local key material to said network device. The network devices are configured to determine a shared key with any one of multiple network devices. A network device comprises a shared key unit (330) arranged to derive a shared key from another network device's identity number and at least two of the multiple local key materials of the network device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.