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Proceedings Paper

Design of secure group key management system
Author(s): Jeong-Min Lee; Kyo-Cheul Hwang; Kyoon-Ha Lee
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Paper Abstract

Needs of Information Security in Multicast is increased. As clients join or leave a specific service group, Backward and Forward Secrecy problem occurred. Solving this problem, service group will make a re-key operation periodically. But because of this operation need translation frequently so it may have a bad influence to Real time property, which needs minimum bandwidth requirement. In this paper, we proposed a Group Key Management System, which is comprised of two levels, KD (Key Distributor) subsystem and subgroup, for managing encryption key. A KD (Key Distributor) subsystem is composed of SKDs (Subgroup Key Distributor) and TKD (Top-level Key Distributor). A SKD manages a encryption key of a subgroup. A TKD generates a KD group key that is a encryption key used in a KD group and transmits it to SKDs with safety. Subgroup consists of hosts in Multicast group. Hosts and a SKD share a encryption key, a subgroup key. This key is generated by a SKD and cannot be disclosed outside of the subgroup. As a result, a load of key management can be distributed into many KD so that the overhead of key translation can be decreased, which is needed at each stage of Multicast traffic. In joining and leaving a Multicast group frequently, a group key is distributed only in a specific subgroup. Therefore the overhead needed to redistribute a key can be decreased. By reducing overhead from security service, we expect to satisfy real time property.

Paper Details

Date Published: 26 July 2001
PDF: 12 pages
Proc. SPIE 4527, Technologies, Protocols, and Services for Next-Generation Internet, (26 July 2001); doi: 10.1117/12.434435
Show Author Affiliations
Jeong-Min Lee, Inha Univ. (South Korea)
Kyo-Cheul Hwang, Suwon Women's College (South Korea)
Kyoon-Ha Lee, Inha Univ. (South Korea)

Published in SPIE Proceedings Vol. 4527:
Technologies, Protocols, and Services for Next-Generation Internet
Anura P. Jayasumana; V. Chandrasekar, Editor(s)

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