Secure group communication protocol and its implementation for JetMeeting, an application based on P2P
Li, Yan (2005) Secure group communication protocol and its implementation for JetMeeting, an application based on P2P. Masters thesis, Iowa State University.
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Supporting secure applications in a distributed environment faces several challenges. Scalable security in the context of multicasting is especially hard when privacy and authenticity is to be assured to highly dynamic groups where the application allows participants to join at any time. The proposals for multicasting security solutions that have been published so far are complex, often are inefficient. In this thesis, we propose a security protocol for achieving scalable security within JetMeeting, an application based on a P2P communication. Our solutions assure that newly joining group members are not able to use the group secure services without the group key. For versatility, our secure protocol supports a scheme for key management, which is devised for Group Key Manager election, Group Key generation, periodic rekey and encrypted transmission. Operations have low complexity for joins with low overhead, thus granting scalability even for large groups. In this thesis we present our implementation based on the existing cryptographic methods. The benefits of this implementation are that it provides the dynamic and decentralized group key management, minimizes the transmissions required to distribute the initialized group key and to rekey the multicast group, as well as multiple simultaneously get the same transmission with one group key. The system was evaluated by experimental tests, and the results provide evidence of its efficiency and scalability.
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