Asserting physical presence to a trusted platform module by physically connecting or disconnecting a hot pluggable device
US9075927B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2013 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Jan 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method includes asserting a physical presence signal to a trusted platform module of a compute node in response to detecting a change in the physical connection of a hot pluggable device to a port of the compute node. The change in the physical connection of the hot pluggable device to the port is selected from physically connecting the hot pluggable device to the port, physically disconnecting the hot pluggable device from the port, and combinations thereof. Optionally, the compute node has a USB port and the hot pluggable device has a USB connector that is selectively physically connectable to the USB port. In one example, detecting a change in the physical connection of the hot pluggable device to the compute node includes detecting a voltage change on the USB port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.