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CCS '00,Athens, Greece. 2000 1-58113-203-4/00/0011

3

Simple and Fault-Tolerant Key Agreement for
Dynamic Collaborative Groups

Yongdae Kimgif
Computer Networks Division
USC/ISI
yongdaek@isi.edu Adrian Perriggif
Computer Science Department
UC Berkeley
perrig@cs.berkeley.edu Gene Tsudik
Dept. of Information and Computer Science
UC Irvine
gts@ics.uci.edu

Abstract:

Secure group communication is an increasingly popular research area having received much attention in recent years. The fundamental challenge revolves around secure and efficient group key management. While centralized methods are often appropriate for key distribution in large groups, many collaborative 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 protocol suite is very simple, secure and fault-tolerant. Moreover, its efficiency surpasses that of prior art.




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Adrian Perrig
Fri Sep 1 21:02:14 PDT 2000