nRF sniffer for BLE cannot decrypt

[Woody00h]

Dear all,

I use the nRF sniffer for BLE and nrf52840 dongle to capture the air log.

The tool can capture the air log and decrypt at the begining.

But after a while it cannot decrypt any more.

The air log is attached to this ticket.

nRF_sniffer.pcapng

[Joakim Jakobsen]

Hi.

Which version of the nRF Sniffer are you using here?

Br,
Joakim

[Woody00h]

nrf_sniffer_for_bluetooth_le_3.1.0_7cc811f 

[Joakim Jakobsen]

Hi.

Did you make any progress on this?

You can check out this previous ticket on the same topic:
https://devzone.nordicsemi.com/f/nordic-q-a/52240/nrf-sniffer-with-ble-communication-indicates-bad-mic

[Woody00h]

No.

This ticket doesn't help. My BLE device doesn't use secure connection. Just legacy pairing.

[Joakim Jakobsen]

Thanks.

I tried sniffing a device using legacy pairing, without any issues.

Could you please add steps on how to reproduce?

Br,
Joakim