Scalable multicast security with dynamic recipient groups

In this paper we address the problem of secure multicast of data streams over a multihop wireless ad hoc network. We propose a dynamic multicast group management protocol that aims at solving problems that are specific to ad hoc networks such as mobility, unreliable links, and cost of multihop communication.The main idea is to have group members actively participate to the security of the multicast group, therefore reducing the communication and computation load on the source. Since the group security is distributed among the group members, we propose a service right certificate, to verify that a node is authorized to join the group, and also a corresponding revocation mechanism. We simulated our protocol within the ns-2 environment under various mobility, group size, and group dynamic scenarios. Our simulation results indicate that the communication cost and join delay of the protocol scale well when the group dynamic and nodes mobility increase. We have implemented the basic protocol in our ad hoc network testbed. We also proposed an extension to the basic secure multicast tree using multi-link capability combined with a k-out-of-N coding approach.

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“…This is similar to the Iolus approach [6] and the physical tree approach in [5]. However, in our approach we take into account MANET constraints.…”

Section: Physical Security Group Tree and Group Discoverymentioning

confidence: 99%

“…Previous research in the area of secure multicast has mainly focused on wired networks and various techniques were proposed considering various constraints [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. The main limitation of these algorithms is that they were not designed for multihop wireless ad hoc networks.…”

Section: Related Workmentioning

confidence: 99%

Secure multicast groups on ad hoc networks

Kaya

Lin

Noubir

et al. 2003

Proceedings of the 1st ACM Workshop on Security of Ad Hoc and Sensor Networks

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“…Basically, the technique is derived from the cipher sequence [5] framework. However, instead of composing cryptography functions, the operation is done for secret keys.…”

Section: Key Compositionmentioning

confidence: 99%

“…Due to the lack of security considerations for multicast protocols, several researches [1][2][3][4][5] have been done to establish secure communications over multicast trees. Although these mechanisms could efficiently achieve key agreements in one multicast group, they may require a centralized key server, not scale well, or leak content during message delivery.…”

Section: Introductionmentioning

confidence: 99%

Secure content delivery using key composition

Huang

Chiu

Chen

et al. 2005

The IEEE Conference on Local Computer Networks 30th Anniversary (LCN'05)l

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“…Thus, the cost of key-update communications is high. Since 1997, many key-management schemes for secure multicast or group communications have been proposed 2,9,10,12,[16][17][18] to minimize the cost of key-update communications and key-storage requirements. All these schemes are based on a hierarchical tree structure and there is always a group controller (GC).…”

mentioning

confidence: 99%

A scalable key‐management scheme with minimizing key storage for secure group communications

Tseng

2003

Int J Network Mgmt

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Recently, many group communication services have become the focus for future developments in the Internet and wireless network applications, such as video-conferencing, collaborative work, networking games or online videos. In particular, these applications require data delivery from one sender to a large number of authorized receivers. Therefore, secure multicast communication will become an important networking issue in the future. Using a common encryption key only known by authorized members to encrypt transmitted data is a practical approach. But, whenever a group member joins or leaves the group, the common encryption key must be updated to ensure both past and future secrecy. As a result, minimizing key update communication cost and the key storage requirement of a group controller is a critical issue in a scalable and dynamically changing large group. A new key-management scheme is proposed to reduce the key storage requirement of a group controller to a constant size, which is far better than that of the previously proposed schemes, while retaining the same key update communication cost. In addition, the correlation between the key storage requirement of each group member and key update communication cost are also presented.

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Scalable multicast security with dynamic recipient groups

Cited by 25 publications

References 20 publications

Secure multicast groups on ad hoc networks

Secure multicast groups on ad hoc networks

Secure content delivery using key composition

A scalable key‐management scheme with minimizing key storage for secure group communications

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