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Authors: Shankar Joshi and Alwyn R. Pais

Affiliation: National Institute of Technology Karnataka, India

Keyword(s): LKH optimization, key management, secure group communication.

Related Ontology Subjects/Areas/Topics: Cryptographic Techniques and Key Management ; Information and Systems Security ; Mobile Code & Agent Security ; Public Key Crypto Applications

Abstract: Logical Key Hierarchy (LKH) is a basic method in secure multicast group rekeying. LKH maintains a balanced tree which provide uniform cost of O(log N) for compromise recovery, where N is group size. However, it does not distinguish the behavior of group members even though they have different probabilities of join or leave. When members have diverse changing probability the gap between LKH and the optimal rekeying algorithm will become bigger. The Probabilistic optimization of LKH (PLKH) scheme, optimized rekey cost by organizing LKH tree with user rekey characteristic. In this paper, we concentrate on further reducing the rekey cost by organizing LKH tree with respect to compromise probabilities of members using new join and leave operations. Simulation results show that our scheme performs 18% to 29% better than PLKH and 32% to 41% better than LKH.

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Paper citation in several formats:
Joshi, S. and R. Pais, A. (2008). A NEW PROBABILISTIC REKEYING METHOD FOR SECURE DYNAMIC GROUPS. In Proceedings of the International Conference on Security and Cryptography (ICETE 2008) - SECRYPT; ISBN 978-989-8111-59-3; ISSN 2184-3236, SciTePress, pages 325-330. DOI: 10.5220/0001928703250330

@conference{secrypt08,
author={Shankar Joshi. and Alwyn {R. Pais}.},
title={A NEW PROBABILISTIC REKEYING METHOD FOR SECURE DYNAMIC GROUPS},
booktitle={Proceedings of the International Conference on Security and Cryptography (ICETE 2008) - SECRYPT},
year={2008},
pages={325-330},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001928703250330},
isbn={978-989-8111-59-3},
issn={2184-3236},
}

TY - CONF

JO - Proceedings of the International Conference on Security and Cryptography (ICETE 2008) - SECRYPT
TI - A NEW PROBABILISTIC REKEYING METHOD FOR SECURE DYNAMIC GROUPS
SN - 978-989-8111-59-3
IS - 2184-3236
AU - Joshi, S.
AU - R. Pais, A.
PY - 2008
SP - 325
EP - 330
DO - 10.5220/0001928703250330
PB - SciTePress

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