Multicast Security For Leo Satellite Store And Forward Network

The store and forward payload on micro satellites affords a low bit rate, non real time data communications service to geographically separated users. The HDLC protocol offers a means for peer to peer communication. The store and forward payload in the LEO satellite initiates, terminates and controls all communication sequences between the client terminal and the satellite. Applications may demand that a client may need to multicast a message to many clients. The inherent nature of a satellite channel is broadcast making it vulnerable to attacks. Hence providing security becomes vital in order to ensure privacy to the users. Two secure multicast strategies have been proposed for the store and forward network and implemented in a real time operating system and their throughput is analyzed.