how to get the wi-sun decryption key

PelionIoT / nanostack-border-router

Nanostack Border Router implementation

Apache License 2.0

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how to get the wi-sun decryption key #241

Closed mcuxmx closed 3 years ago

mcuxmx commented 3 years ago

I got the GTK value from KV storage through "pae_nw_info", and input it into wireshark->Preferences->Protocols->IEEE802.15.4->Decryption Keys But the message received by the sniffer is still encrypted. How can I get the correct key.

mikaleppanen commented 3 years ago

On Wireshark you'll need to set the group AES key (GAK) as decryption key. GTK needs to be hashed with network name to get that (ch. 6.5.4.1.1 on wisun fan specification), On ws_pae_controller.c there are also extra debug traces under the flag EXTRA_DEBUG_INFO that print the GAK.