Recently, it was argued that the true potential of sensor network services can be realized only if they become an integral part of a larger context-aware distributed system. The benefit is that, the intergration allows sensor network services to be seamlessly accessible to remote users through devices that they are already familiar with. This integration can be simplified using a publish-subscribe system. However, the wireless medium facilitates eavesdropping and some data is sensitive. This makes the security extremely important. Furthermore, sensor nodes have limited power and processing resources, so standard security mechanisms, which are heavy in weight and resource consumption, are unsuitable. These challenges increase the need to develop comprehensive and secure solutions that achieve wider protection, while maintaining desirable network performance. In this paper, we propose a secure publish-subscribe-based in-network data storage service in WSNs to provide different security requirements such as confidentiality, authentication, integrity, availability, and authorized access.
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