Secure Distributed Virtual Conferencing

We describe a secure distributed virtual conferencing appli­ cation (SDVC) that provides high quality streaming video and audio using IP multicast for efficient distribution, uses strong authentication via cryptographic means, and (option­ ally) provides fully encrypted communication without sac­ rificing the quality of the medium or the user experience. We summarize our experiences with SDVC in arecent live demonstration and conclude with a discussion of future plans.