Hi Jason, >> yes, there are plenty of commands needed before a controller becomes usable. > > That doesn't clearly address with precision what Ted was wondering. > Specifically, the inquiry is: can you confirm with certainty whether > or not all calls to get_random_bytes() in the bluetooth directory are > *necessarily* going to come after a call to hci_power_on()? on a powered down controller, you can not do any crypto. SMP is only during a connection and the RPAs are only generated when needed. So yes, doing this once in hci_power_on is plenty. However we might want to limit this to LE capable controllers since for BR/EDR only controllers this is not needed. For A2MP I need to check that we need the random numbers seeded there. However this hidden behind the high speed feature. Regards Marcel
