+-----------+
                 KEK info |    Key    | HBH Key info to
             to Endpoints |Distributor| Endpoints & Media Distributor
                          +-----------+
                             # ^ ^ #
                             # | | #--- Tunnel
                             # | | #
+-----------+             +-----------+             +-----------+
| Endpoint  |   DTLS      |   Media   |   DTLS      | Endpoint  |
|    KEK    |<------------|Distributor|------------>|    KEK    |
|  HBH Key  | to Key Dist | HBH Keys  | to Key Dist |  HBH Key  |
+-----------+             +-----------+             +-----------+