摘要：In this paper we address the problem where adistributed group of people wish to meet securely over theInternet. Obviously, basic encryption techniques fail to achievethis aim since they involve the encoding or decoding of messagesbetween two parties only. For this purpose, we propose acryptographic protocol that allows any number of people tomeet remotely while keeping their discussions secure from anypotential eavesdropper. Our solution uses a trusted third partyand is based on a refined version of the original Otway-Reesprotocol. Prior to the establishment of a secure communicationchannel, we start by authenticating all the users involved. Wealso provide a formal proof of the correctness of the suggestedprotocol.
