Secure Multicast in WiMAX

Xu, Sen; Huang, Chin‐Tser; Matthews, Manton M.

doi:10.4304/jnw.3.2.48-57

Cited by 11 publications

(16 citation statements)

References 18 publications

(35 reference statements)

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“…Although this algorithm works well, it still has several scalability and security problems [4][5][6]. Generally, the rekeying algorithms should support backward secrecy which means a new member must not get any access to former messages, as well as forward secrecy which means a leaving member should not be able to read any future messages [7].…”

Section: Introductionmentioning

confidence: 99%

Scalable Rekeying Algorithm in IEEE 802.16e

Sadeghi

Ali

Manan

et al. 2011

The 17th Asia Pacific Conference on Communications

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IEEE 802.16e standard provides wide coverage and high bandwidth for subscribers in a metropolitan area network. It introduces Multicast and Broadcast Rekeying Algorithm (MBRA) which is a multicasting scheme to communicate with many users concurrently. Although ELAPSE (for Efficient sub-Linear rekeying Algorithm with Perfect SEcrecy) improves on the deficiencies of MBRA, the algorithm poorly responds to scalability issue. This paper proposes a Scalable Rekeying Algorithm (SRA) based on a complete binary tree structure. SRA is introduced with linear linked list structure in order to make the system more scalable. Evaluation analysis shows that SRA manages to improve the scalability issue in MBRA for Mobile WiMAX.

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Section: Introductionmentioning

confidence: 99%

Scalable Rekeying Algorithm in IEEE 802.16e

Sadeghi

Ali

Manan

et al. 2011

The 17th Asia Pacific Conference on Communications

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“…But in [3], [8] and [9], the authors have shown that the MBRA fails to ensure forward and backward secrecy. Also the MBRA is not scalable for large group as the message complexity is O(n), which means that it increases proportionally with the number of group members, n. Scalable multicast key distribution and group key management protocols specification are amongst few works in secure multicast and broadcast [3] [8]. Kronos [10] takes a unique periodical rekeying approach that rekeys the group only at specified time intervals.…”

Section: Related Workmentioning

confidence: 99%

“…Similarly, the group key used in current session should be updated when a user joins the group. For convenience, we call the updating operations for forward secrecy and backward secrecy as rekeying [3]. To enable the multicast service into commercial wireless applications, well designed access admission to multicast data is needed.…”

Section: Introductionmentioning

confidence: 99%

Secure and Efficient Multicast Rekeying Approach for Non-Transparent Relay-Based IEEE 802.16 Networks

Khan¹,

Fisal²,

Kamilah³

et al. 2011

IJCA

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Many emerging applications that depend on secure group communications demand the privacy of participants and access control at the multicast server. The multicast and broadcast services in IEEE 802.16 are efficient and power saving mechanisms, which no doubt also provide subscribers with strong and powerful security protection from the theft of service by encrypting broadcast connections between subscriber station (SS), relay station (RS), non-transparent relay station (NRS) and Multihop relay base station (MR-BS). However, the existing multicast and broadcast rekeying algorithm (MBRA) not only facing forward secrecy, backward secrecy and scalability problems for IEEE 802.16e but also for multihop relay based networks both in centralized as well as distributed zone. Although many researches try to give solutions for the above problems, all of them focus mainly on IEEE 802.16e networks and none of paper is published on distributed relay-based Wimax networks. This paper illustrates the main security problem of MBRA in general which is scalability, backward and forward secrecy and proposes a new Secure and efficient distributed Relaybased Rekeying Algorithm (SEDRRA) scheme for nontransparent Multihop IEEE 802.16 networks. The proposed scheme uses non-transparent decode and forward relays. Both analysis and performance evaluation show that our scheme can significantly reduce the complexity and solve all of the above problems in an efficient way.

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“…The GKEK is also encapsulated by the KEK of each MS. Each MS has a unique KEK which is obtained from the AK. Although, the MBRA of MBS is quite well designed, it still suffers from efficiency and scalability problem and it does not address backward and forward secrecy [8,18]. To explain this point, in the MBRA algorithm, the BS should unicast n messages, where n is the number of MS, with the aim of updating the group keys, which unfortunately would cause weak scalability due to the increased number of unicast messages.…”

Section: Multicast and Broadcast Servicementioning

confidence: 99%

“…Researchers in [18] performed a detailed analysis of the MBRA algorithm and identified its deficiencies. They proposed an improved scheme to address the deficiencies identified.…”

Section: Rekeying Algorithmsmentioning

confidence: 99%