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Simple and Fault-Tolerant Key Agreement for Dynamic Collaborative Groups

Summary: Simple and Fault-Tolerant Key Agreement for Dynamic
Collaborative Groups
Anonymous submission
Secure group communication is an increasingly popular research area having received much attention in
the last several years. The fundamental challenge revolves around secure and efficient group key manage-
ment. While centralized methods are often appropriate for key distribution in large groups, many collabora-
tive group settings require distributed key agreement techniques. This work investigates a novel approach to
group key agreement by blending binary key trees with Diffie-Hellman key exchange. The resultant proto-
col suite is very simple, fault-tolerant and secure. In particular, the efficiency of our protocols significantly
surpasses that of prior art.
1 Introduction
Fault-tolerant, scalable, and reliable communication services have become critical in modern computing. A
major current trend is in converting traditional centralized services(such as file sharing, authentication, web,
and mail) into distributed services spread across multiple systems and networks. These distributed applications
and other inherently collaborative applications (such as conferencing, white-boards, shared instruments and
command-and-control systems) are very difficult to implement. One common and successful approach to
developing these types of applications is to use a reliable group communication platform as a base messaging
At the same time, the increasing popularity and diversity of distributed and collaborative applications


Source: Amir, Yair - Department of Computer Science, Johns Hopkins University


Collections: Computer Technologies and Information Sciences