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Show how to also get network key without re-pairing device (#1035)

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* Show how to also get network key without re-pairing device

* Update how_to_sniff_zigbee_traffic.md
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Glen Takahashi
2019-02-06 15:21:58 -05:00
committed by Koen Kanters
parent 314ab1b705
commit ecf1b9ded4
1 changed files with 5 additions and 1 deletions
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docs/how_tos/how_to_sniff_zigbee_traffic.md
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@@ -42,7 +42,11 @@ Add the Trust Center link key by going to to Edit -> Preferences -> Protocols ->
![Wireshark Trust Center link key](../images/wireshark_tclink_key.png)
Next we need to figure out the network encryption key. The network encryption key is exposed when a device joins the network. Pair a new device to the network (or repair an existing one) and grab the message where the Info is *Device Announcement....*. Open the message and expand *ZigBee Network Layer Data* -> *ZigBee Security Header*.
Next we need to figure out the network encryption key. There are two ways to do this:
1) By default, if you haven't changed `network_key` in your `configuration.yaml` this will be `01:03:05:07:09:0B:0D:0F:00:02:04:06:08:0A:0C:0D`. If you changed your `network_key`, then convert each number into its 2-digit hexadecimal value, and combine them all with `:` between. E.g. `[1, 3, 5, 7, 9, 11, 13, 15, 0, 2, 4, 6, 8, 10, 12, 13]` -> `01:03:05:07:09:0B:0D:0F:00:02:04:06:08:0A:0C:0D`
2) If you don't want to manually translate the numbers, the network encryption key is also exposed when a device joins the network. Pair a new device to the network (or repair an existing one) and grab the message where the Info is *Device Announcement....*. Open the message and expand *ZigBee Network Layer Data* -> *ZigBee Security Header*.
![Wireshark network key](../images/wireshark_network_key.png)