NETSTACK_LLSEC: Reusable functions for settings keys that are smaller
than 128 bits and for calling AES with plaintext blocks that are
smaller than 128 bits
nanosec: Pairwise key establishment + authentication and verification of unicast frames
nanosec: Optional encryption of unicasts
nanosec: Master key erasure
nanosec: Sending empty ANNOUNCE command before broadcasting
nanosec: Calling watchdog
nanosec: Adding CCM*-MICs to ANNOUNCE commands
nanosec: Buffering the CCM-MICs of ANNOUNCE commands
nanosec: Verification of broadcast frames
nanosec: Optional encryption of broadcast frames