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Security
Appendix C Security
The Intel® LIQD device security is provided by five mechanisms:
1. Connection to the Cloud-based components via HTTPS, with the servers public
certificates held on the Intel® LIQD device.
2. Authentication of the device by the Device Management Service, with the unique and
individual private key held securely in a cryptographic coprocessor.
3. Individual M2X API keys, created and managed by M2X providing write access to that
device's M2X data streams only.
4. Whitelisting of the domains to which the Intel® LIQD APN can connect – M2X, Device
Management Service, and NTP servers only.
The device periodically reports its configuration hash (security), firmware versions, and
certificate bundle version to the DMS. A report is sent each time a device is powered up,
or when the configuration, certificate, or firmware has changed.
The operation of OAuth 2.0 authentication with M2X is detailed here:
https://m2x.att.com/developer/documentation/v2/oauth
December 2017
Document Number: 336569 Rev 1.0
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Sonim* XPi
User Guide
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