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Location information has been found useful in the design of key predistribution schemes in wireless sensor networks (WSNs). In this paper, a novel key management scheme based on location is proposed to enhance the security of the wireless sensor networks. We get the idea from the previous location-based key (LBK) scheme but here the location of a sensor node is described by its neighbors' logical...
Quantum key distribution (QKD) technology provides proven unconditional point-to-point security based on fundamental quantum physics. A QKD network also holds promise for secure multi-user communications over long distances at high-speed transmission rates. Although many schemes have been proposed so far, the trusted relay QKD network is still the most practical and flexible scenario. In reality,...
An effective group key agreement protocol is important for group-oriented applications. Some key tree approaches have been proposed by other researchers. The rekey cost of some of them scales with the logarithm of the group size for a join or leaving request, in which TGDH (tree based group Diffie-Hellman) is considered as one of the most effective and secure protocols. But the rekey cost is still...
The key issue for WSN (wireless sensor network) is designing viable security mechanisms for the protection of confidentiality, integrity and authentication to prevent malicious attacks, but with nodespsila limited capabilities. Recently, Cheng proposed an efficient key distribution mechanism for large scale wireless sensor network based on hierarchical topology. In this paper, we show that Chengpsilas...
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