Managing use of management controller secrets based on firmware ownership history
US12069169B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2022 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Oct 31, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0894
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A management controller of a computer platform, determines whether an ownership history of management firmware for the management controller represents multiple owners. The management controller includes a set of one-time programmable elements that represent a first secret. The management controller manages use of the first secret based on the ownership history. The management includes, responsive to determining, by the management controller, that the ownership history represents multiple owners, generating, by the management controller, a second secret to replace the first secret. The management further includes, responsive to determining, by the management controller, that the ownership history represents multiple owners, storing, by the management controller, the second secret in a non-volatile memory and generating, by the management controller, cryptographic keys based on the second secret.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.