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Summary: Scaling Secure Group Communication Systems: Beyond Peer-to-Peer
Yair Amir
Cristina Nita-Rotaru
Jonathan Stanton
Gene Tsudik
Abstract
This paper proposes several integrated security architecture
designs for client-server group communication systems. In an
integrated architecture, security services are implemented in
servers, in contrast to a layered architecture where the same ser-
vices are implemented in clients. We discuss the performance
and accompanying trust issues of each proposed architecture and
present experimental results that demonstrate the superior scala-
bility of an integrated architecture.
1 Introduction
Many routine activities in modern, everyday life involve
the Internet: shopping for goods (such as books, cars, soft-
ware and even groceries), administering bank or credit card
accounts and making financial transfers, participating in
voice or video-conferences, or simply playing games. Most
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