Message-Efficient Protocol Clause Samples

Message-Efficient Protocol. The main protocol in [7] is message-efficient. If all the participants are honest, they broadcast O(n) messages totally. But, the protocol is not fault tolerant, that is, it cannot withstand the attack of malicious participants. We can apply the technique of publicly verifiable secrets to obtain a message-efficient, but not round-efficient, conference key agreement protocol that meets the security requirements. The protocols’s message complexity is O(n) in the best case and O(n2) in the worst case. It seems that there is no easy way to augment the protocol to be both message- and round-efficient. The modified protocol is as follows.