Secure access to peripheral devices over a bus
US10452582B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2018 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Apr 18, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/85
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A security device includes an interface and a processor. The interface is configured for connecting to a bus that serves one or more peripheral devices. The bus includes (i) one or more dedicated signals that are each dedicated to a respective one of the peripheral devices, and (ii) one or more shared signals that are shared among the peripheral devices served by the bus. The processor is connected to the bus as an additional device in addition to the peripheral devices, and is configured to disrupt on the bus a transaction in which a bus-master device attempts to access a given peripheral device, by disrupting a dedicated signal associated with the given peripheral device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.