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Access bluetooth session key after pairing

Leon Ruppen
Prodigy 10 points

Hi guys


For my application I need to acces the bluetooth session key which should be exchanged while pairing. I should also be able to access it directly after a GAPBOND_PAIRING_STATE_COMPLETE callback.

Can someone help?

Cheers,

Leon

  • 0
    TI__Guru** 105180 points
    Hello Leon,

    The Long Term Key (LTK) is stored by the GAP Bond Manager and not exposed to the application via callback. In BLE, link layer encryption is managed by the Controller so the application does not need the key. If you want to extract it, you can study gapbondmgr.c to see how it's stored in the SNV.

    Best wishes