Secure and distributed data in wireless sensor network

A data discovery and dissemination protocol for wireless sensor networks (WSNs) is answerable for updating configuration parameters of, and distributing management instructions to, the sensor nodes. All existing data discovery and dissemination protocols undergo from two drawbacks. First, they are based on the centralized approach; only the base station can distribute data item. Such an approach is not suitable for emergent multi-owner-multi-user WSNs. Second, those protocols were not designed with security in mind and hence adversaries can easily launch attacks to harm the network. This paper proposes the first secure and distributed data discovery and dissemination protocol named SDD. It allows the network owners to authorize numerous network users with different privileges to simultaneously and directly disseminate data items to the sensor nodes. Moreover, as demonstrated by our theoretical analysis, it addresses a number of probable security vulnerabilities that we have identified. Extensive security analysis show SDD is provably secure. We also implement SDD in an experimental network of resource-limited sensor nodes to show its high efficiency in practice.