Efficient multicast source authentication protocol and simulation

An efficient triggered multicast source authentication protocol was put forward. This protocol can offer higher utilization ratio of key and lower communication overload, which remain problems in TESLA. The probabilistic resilient multicast scheme was combined to reduce the authentication delay and packet loss in network. Simulation results show that this protocol possesses the same performances with TESLA under the condition of intensive broadcast rates. However, under the condition of sparse or random broadcast rates, it can improve utilization ratio of key by about 36 times and reduce the communication overloads by about 5.1 times than TESLA, and this performance will be further increased with lower of broadcast rates.