Redundant device locking key management system
US11252138B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2019 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Feb 3, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/30
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A redundant key management system includes a key management system coupled to a plurality of server devices through a network. A first server device includes a managed device coupled to a first remote access controller device that receive a device locking key from the key management system and uses it to lock the managed device. The first remote access controller device then encrypts the device locking key, broadcasts the encrypted device locking key through the network to a second remote access controller device in a second server device, and erases the device locking key. Subsequently, the first remote access controller device transmits a request to retrieve the encrypted device locking key. When the first remote access controller receives the encrypted device locking key from the second remote access controller device, it decrypts the encrypted device locking key and uses the resulting device locking key to unlock the managed device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.