Abstract
With the development of wireless sensor networks (WSNs), in most application scenarios traditional WSNs with static sink nodes will be gradually replaced by Mobile Sinks (MSs), and the corresponding application requires a secure communication environment. Current key management researches pay less attention to the security of sensor networks with MS. This paper proposes a hybrid key management schemes based on a Polynomial Pool-based key pre-distribution and Basic Random key pre-distribution (PPBR) to be used in WSNs with MS. The scheme takes full advantages of these two kinds of methods to improve the cracking difficulty of the key system. The storage effectiveness and the network resilience can be significantly enhanced as well. The tree-based path key establishment method is introduced to effectively solve the problem of communication link connectivity. Simulation clearly shows that the proposed scheme performs better in terms of network resilience, connectivity and storage effectiveness compared to other widely used schemes.
Highlights
In most of the traditional key management schemes for wireless sensor network, the sink node is fixed, which may cause lots of data storage and forwarding among the sensor nodes, and the keys may have higher risks of being captured [1,2,3,4]
This article puts forward a hybrid key management scheme for wireless sensor networks with
This article puts forward a hybrid key management scheme for wireless sensor networks with Mobile Sinks (MSs)
Summary
In most of the traditional key management schemes for wireless sensor network, the sink node is fixed, which may cause lots of data storage and forwarding among the sensor nodes, and the keys may have higher risks of being captured [1,2,3,4]. The proposed scheme puts forward a path key generation method based on the tree-based path key establishment, which regards the MS node as the root in the range of communication. This can deal with the problem of higher nodes’ storage capacity requirements and poor network connectivity.
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