NXP Semiconductors UM11490 - Extract the Link Key for Remote Bluetooth Classic;Bluetooth LE Devices

NXP Semiconductors
UM11490
Feature Configuration Guide for NXP-based Wireless Modules on i.MX 8M Quad EVK
5.1.3 Extract the Link Key for remote Bluetooth Classic/Bluetooth LE devices
Follow these steps to get the link key for paired Bluetooth Classic/Bluetooth LE devices:
Get the information for Bluetooth Classic and/or Bluetooth LE devices
root@imx8mqevk:~# cat /var/lib/bluetooth/<DUT BD Address>/<Remote BD
Address>/info
Example - Get the Link Key for a Bluetooth device
root@imx8mqevk:~# cat /var/lib/bluetooth/00:50:43:24:34:F7/
B4:F5:00:31:CB:4E/info
[LinkKey]
Key=7CC2A6C9AA14F799F9E596B90FC973BC
Type=8
PINLength=0
Example - Get the Long Term Key for a Bluetooth LE device
root@imx8mqevk:~# cat /var/lib/bluetooth/00:50:43:24:34:F7/
D4:18:20:A0:48:5F/info
[LongTermKey]
Key=AA3E7062B5B9415F9F27A5010690412A
Authenticated=0
EncSize=16
EDiv=10551
Rand=730759945871301339
UM11490 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved.
User manual Rev. 2 — 29 January 2021
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