Technologies for integrity, anti-replay, and authenticity assurance for I/O data
US10073977B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2015 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Jul 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/031
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Technologies for authenticity assurance for I/O data include a computing device with a cryptographic engine and one or more I/O controllers. A metadata producer of the computing device performs an authenticated encryption operation on I/O data to generate encrypted I/O data and an authentication tag. The metadata producer stores the encrypted I/O data in a DMA buffer and the authentication tag in an authentication tag queue. A metadata consumer decrypts the encrypted I/O data from the DMA buffer and determines whether the encrypted I/O data is authentic using the authentication tag from the authentication tag queue. For input, the metadata producer may be embodied as the cryptographic engine and the metadata consumer may be embodied as a trusted software component. For output, the metadata producer may be embodied as the trusted software component and the metadata consumer may be embodied as the cryptographic engine. Other embodiments are described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.