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 communi...
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ISBN:
(纸本)9781457703898
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.
In order to improve communication efficiency and reduce the lost brought by key leakage as much as possible, this paper proposes a novel certificateless multi-proxy signcryption scheme with forward security based on t...
详细信息
ISBN:
(纸本)9781479914067
In order to improve communication efficiency and reduce the lost brought by key leakage as much as possible, this paper proposes a novel certificateless multi-proxy signcryption scheme with forward security based on the certificateless cryptography and the ideas of the latest signcryption key. In our proposed scheme, even if the proxy key got lost, attacker could not forge the signcryption key. In the meantime, the proposed scheme can effectively prevent public key replacement and malicious-but-passive KGC(key generation centre) attack. Our paper finally proved that the proposed scheme has decent security, communication efficiency and desirable practicality.
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