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Proceedings Paper

A scalable key management scheme with minimizing rekey cost for secure multicast over satellite networks
Author(s): Junwei Gao; Zongkai Yang; Haitao Xie
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Paper Abstract

Satellite networks are playing a more and more important role in network infrastructure. They are useful in providing broadband connectivity to remote locations which are harder to reach through terrestrial infrastructure. Data confidentiality and integrity are two critical issues for satellite networks. The multicast traffic should be accessible only to subscribers, this requires security and efficient methods to generate, distribute and update the keys. Access control can be achieved by data encryption, such as end to end security mechanisms----IPSec. Due to the high rekeying cost, most current key management protocols do not scale well for secure multicast over satellite networks. In this article we proposed a scalable key management scheme to provide secure communication in satellite networks with minimal key management overhead. The principle of this approach is to break up IPSec encryption into multiple encryption zones on a single packet and encrypts different regions of the IP packet using different keys. All of those keys are composed into just only one multi group key tree for secure multicast over satellite networks. The proposed scheme can reduce the communication and storage overhead significantly. In addition, the proposed key graph is scalable well.

Paper Details

Date Published: 10 November 2007
PDF: 6 pages
Proc. SPIE 6795, Second International Conference on Space Information Technology, 67956L (10 November 2007); doi: 10.1117/12.775294
Show Author Affiliations
Junwei Gao, Huazhong Univ. of Science and Technology (China)
Zongkai Yang, Huazhong Univ. of Science and Technology (China)
Haitao Xie, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 6795:
Second International Conference on Space Information Technology

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