Stateful authenticated event communication
US12399983B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2020 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Jan 15, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/552
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Communications, such as system event log messages, can be authenticated using a hash value included in the messages. In some embodiments, the hash can be generated using secret hash parameters to generate a hash of the prior message in the sequence. The hash is stored to BIOS memory that is inaccessible, or at least not exposed, to an operating system executing on the computing device. A recipient, such as the BMC on the computing device, receiving these messages over an appropriate interface can compare the received and expected hash values in order to attempt to authenticate those messages. Authenticated messages can be processed, while unauthenticated messages can be dropped and remedial action taken as appropriate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.