Securing DNP3 Broadcast Communications in SCADA Systems.

The Distributed Network Protocol version 3 (DNP3) provides Secure Authentication (DNP3-SA) as the mechanism to authenticate unicast messages from a master station to its outstations in supervisory control and data acquisition systems. In large-scale systems, it may be necessary to broadcast a critical request from a master station to multiple outstations at once. The DNP3 protocol standard describ...