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Key management poses a main concern for security operation in wireless sensor networks. Most existing key management schemes try to establish shared keys for all pairs of neighbor sensors in homogeneous sensor networks. In recent, some research has demonstrated that heterogeneous sensor networks can achieve better performance in security than homogeneous networks. In this paper we propose a key- chain...
Self-healing key distribution enables users in a large and dynamic group to establish session keys for secure group communication over an unreliable network. The main property of self-healing key distribution is that the users are capable of recovering lost session keys on their own, without requesting additional transmissions from the group manager. In this paper, we propose a self-healing key distribution...
Wireless sensor networks (WSNs) are commonly used in many applications now. According to the capability of sensor nodes, there are two types of WSN: homogeneous sensor networks and heterogeneous sensor network (HSN). Large-scale homogeneous sensor networks require high computation overhead, communication overhead and large memory storage. To achieve better performance and scalability, large-scale...
Wireless Sensor Networks have a wide spectrum of applications ranging from health care to war fare. Applications like network query, software updates, time synchronization and network management demand for broadcast security. In these applications if same key is used to encrypt every packet that we send, then various attacks can be launched to derive the key. In order to avoid this it is required...
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