The need of distributed data discovery and dissemination protocols is not completely new, but previous work did not address this need. We study the functional requirements of such protocols, and set their design objectives. Also, we identify the security vulnerabilities in previously proposed protocols. Based on the design objectives, we propose DiDrip. It is the first distributed data discovery and dissemination protocol, which allows network owners and authorized users to disseminate data items into WSNs without relying on the base station. More-over, our extensive analysis demonstrates that DiDrip satisfies the security requirements of the protocols of its kind. In particular, we apply the provable security technique to formally prove the authenticity and integrity of the disseminated data items in DiDrip. We demonstrate the efficiency of DiDrip in practice by implementing it in an experimental WSN with resource-limited sensor nodes. This is also the first implementation of a secure and distributed data discovery and dissemination protocol.
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