2 Replies Latest reply on Sep 16, 2019 2:28 AM by ViBe_4457111

    Difference between Bluetooth classic Secure Simple Pairing (SSP) and BLE Pairing/Bonding



      I am using Bluetooth + BLE dual mode stack.

      I have gone through Bluetooth SIG Core_4.2 standards. I was going through BLE legacy and Secure connection. Also I was going through Bluetooth SSP (Secure Simple Pairing) for better understanding and comparison.

      Below is my understanding.

      1) BLE Secure connection is similar to Bluetooth SSP with respect to Public & Private keys exchange.

      2) LTK is used in BLE Secure Connection. Link key is used in Bluetooth SSP.


      I have few queries. I am bit confused. Whether below statements are correct ? Please correct me if I am wrong.

      1) Pairing & Bonding is only in BLE. In BLE pairing keys are not stored whereas in BLE bonding keys are stored.

      2) In Bluetooth classic, as part of SSP, Link keys are stored. In Bluetooth there is no Pairing similar to BLE where keys are not stored.

      3) Bonding in BLE is similar to Bluetooth classic Pairing with respect to keys storing.


      Thanks & Regards

      Vishnu Beema