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Universally composable contributory group key exchange

Gorantla, Choudary, Boyd, Colin, & Gonzalez Nieto, Juan Manuel (2009) Universally composable contributory group key exchange. In Asian ACM Symposium on Information, Computer and Communications Security (ASIACCS 2009), 10 - 12 March 2009, Sydney.

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Abstract

We treat the security of group key exchange (GKE) in the universal composability (UC) framework. Analyzing GKE protocols in the UC framework naturally addresses attacks by malicious insiders. We define an ideal functionality for GKE that captures contributiveness in addition to other desired security goals. We show that an efficient two-round protocol securely realizes the proposed functionality in the random oracle model. As a result, we obtain the most efficient UC-secure contributory GKE protocol known.

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6 citations in Scopus
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ID Code: 26155
Item Type: Conference Paper
Keywords: cryptographic protocols, Group Key Exchange, Contributiveness, Universal Composition
DOI: 10.1145/1533057.1533079
ISBN: 9781605583945
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > DATA FORMAT (080400) > Data Encryption (080402)
Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > COMPUTER SOFTWARE (080300) > Computer System Security (080303)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Institutes > Information Security Institute
Copyright Owner: Copyright 2009 ACM
Deposited On: 06 Jul 2009 13:19
Last Modified: 29 Feb 2012 23:55

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