Zigbee Install codes and Predefined Link key at the same time

[sjf]

Hi, 

On a nRF52840 based coordinator, I want to support Zigbee 3.0 install codes and legacy devices with HA predefined link key at the same time.

1. Is that possible by just enabling legacy mode?

2. Do I need to call zb_set_installcode_policy(false) too?

Thanks,

santiago

[Edvin]

Hello,

My understanding is that this should work. Have you tested? Did it not work? If not, I would have to discuss with our Zigbee team. Is it possible to do a sniffer trace of the network when you try to add devices both with the predefined Install Codes and the HA predefined link key?

BR,

Edvin

[Jiuping Li]

I found that after trying to install codes, it is impossible to decrypt after network capture

[Edvin]

I have not tested this. Did you capture the network from the very start of the formation of the network?

It may be that since the install code is required, the keys that the sniffer the would require to decrypt the network packets are never actually sent over the air, and hence, it would not be able to decrypt it.

BR,

Edvin

[Jiuping Li]

Maybe I didn't describe the problem clearly. What I want to ask is if the "install codes" function is used, can sniffer see the communication data? What key is used to decrypt on sniffer?

[Edvin]

Please open a separate ticket, as the topic of this ticket doesn't really cover your isse.

Sorry for the inconvenience.

Best regards,

Edvin