January 2018
Intermediate to advanced
524 pages
13h 33m
English
Content preview from Internet of Things for Architects
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Zigbee security
Zigbee builds off the security provisions of IEEE 802.15.4. Zigbee provides three security mechanisms: access control lists (ACL), 128-bit AES encryption, and message freshness timers.
The Zigbee security model is distributed across several layers:
- Application layer provides key creation and transport services to ZDO
- Network layer manages routing, and outgoing frames will use the link key defined by the routing if available; otherwise, a network key is used
- MAC layer security is managed through an API and controlled by the upper layers
There are multiple keys that are managed by a Zigbee network:
- Master key: The master key may be pre-installed by a manufacturer or entered by a manual process with the user. It forms the ...
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