Isolation of Trusted Input/Output Devices

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...

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Bibliographic Details
Main Authors Thom Stefan, Spiger Robert K, Wooten David R, Kapadia Merzin
Format Patent
LanguageEnglish
Published 20.10.2016
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary: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.
Bibliography:Application Number: US201514816301