Abstract
In wireless sensor networks (WSN) key management is a working research subject. As we have large number of key management schemes (KMS) that are designed for sensor network, it is not easy for network designers to know which KMS is perfect fit in a specific WSN operation. This paper presents an exhaustive overview of different schemes along with their advantages and disadvantages. As KMS is the stepping stone of any security mechanism in a sensor network, its effectiveness depends on the underlying scheme. KMS in a WSN guarantees communication between one or two pairs node batch. We have analyzed different schemes based on parameters such as storage cost, communication cost and resilience against node capture.
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