Isolation of trusted input/output devices
US10063375B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2015 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Nov 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2141
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques are provided to ensure isolation of trusted input/output devices using a Secure Crypto-Processor. Secure IO lines may be used to drive devices that have a higher integrity requirement and to do attestation of sensor readings. Enhanced authorization policies may be used to enforce policies on interaction with IO devices. A bus master controller may also be provided in a Secure Crypto-Processor. Individual devices on an isolated Secure Crypto-Processor bus may be mapped to Indices so that read and write operations can be associated with Secure-Crypto-Processor-enforced authorization policies. The Secure Crypto-Processor may further provide means of attestation for complex data read from an input/output device that may be signed with the device identity to show strong origination proof of that data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.