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Summary: On the Performance of Group Key Agreement
Protocols
YAIR AMIR
Johns Hopkins University
YONGDAE KIM
University of Minnesota, Twin Cities
CRISTINA NITA-ROTARU
Purdue University
and
GENE TSUDIK
University of California, Irvine
Group key agreement is a fundamental building block for secure peer group communication sys-
tems. Several group key management techniques were proposed in the last decade, all assuming
the existence of an underlying group communication infrastructure to provide reliable and ordered
message delivery as well as group membership information. Despite analysis, implementation and
deployment of some of these techniques, the actual costs associated with group key management
have been poorly understood so far. This resulted in an undesirable tendency: on the one hand,
adopting sub-optimal security for reliable group communication, while, on the other hand, con-
structing excessively costly group key management protocols.
This paper presents a thorough performance evaluation of five notable distributed key manage-
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