Dynamic group communication security

Chaddoud, Ghassan; Chrisment, Isabelle; Schaff, André

doi:10.1109/iscc.2001.935354

Cited by 16 publications

(2 citation statements)

References 10 publications

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“…Baal protocol was proposed [6]. It defines three types of nodes: (i) the group controller GC that maintains a participant list PL, announces the secure session and distributes the TEK to the members via local controllers.…”

Section: Related Workmentioning

confidence: 99%

An efficient heterogeneous key management approach for secure multicast communications in ad hoc networks

2008

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In a mobile wireless ad hoc network, mobile nodes cooperate to form a network without using any infrastructure such as access points or base stations. Instead, the mobile nodes forward packets for each other, allowing communication among nodes outside wireless transmission range. As the use of wireless networks increases, security in this domain becomes a very real concern. One fundamental aspect of providing confidentiality and authentication is key distribution. While public-key encryption has provided these properties historically, ad hoc networks are resource constrained and benefit from symmetric key encryption.In this paper, we propose a new key management mechanism to support secure group multicast communications in ad hoc networks. The scheme proposes a dynamic construction of hierarchical clusters based on a novel density function adapted to frequent topology changes. The presented mechanism ensures a fast and efficient key management with respect to the sequential 1 to n multicast service.

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Section: Related Workmentioning

confidence: 99%

An efficient heterogeneous key management approach for secure multicast communications in ad hoc networks

2008

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“…A common approach to key management in multicast networks is the use of hierarchy by delegating the group key management to local controllers or partitions which multicast the re-keying message to all group members [1] [6] [7] [12]. A secure channel for key distribution within a group is proposed in [11].…”

Section: Key Management In Secured Multicast Networkmentioning

confidence: 99%

Group key management utilizing Huffman and Petrick based approaches

Ilango

2004

International Conference on Information Technology: Coding and Computing, 2004. Proceedings. ITCC 2004.

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One of the major issues in secure multicast networks is scalable key distribution. When user(s) leave(s) the group, the group key has to be changed and the new key has to be distributed to the remaining users. If the size of the group is large, distribution overhead increases. We propose the Modified Huffman Technique for efficiently distributing the key(s), after the removal of users from a secure group. In the presence of multiple leaves, the overhead gets compounded. We utilize Petrick's method of Boolean logic minimization instead of QuineMcLuskey method for a better performance in the case of multiple leaves. Simulation results confirm that our scheme minimizes the number of keys that has to be changed after user's exit from the network and hence reduces the redistribution overhead.

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