BCDS-SDN: Privacy and Trusted Data Sharing Using Blockchain Based on a Software-Defined Network's Edge Computing Architecture

Edge computing offloads the data processing capacity to the user side, provides flexible and efficient computing services for the development of the smart city, and brings many security challenges. To enhance the security of data sharing in edge computing, a secured blockchain shared data in Software Defined Networking System (BCDS-SDN) framework is proposed to ensure secured transactions between edge nodes and the Cloud, control access, and verify trusted edge from malicious nodes. The integration of SDN and blockchain concepts gives us the power to control and verify the identity of edge nodes to protect the infrastructure from many types of attacks, such as MitM, compromised channels, adding malicious nodes, and DDoS attacks. The combination of edge computing and Blockchain in a BCDS-SDN solution provides a vast scale of storage systems, database servers, and authenticated computation to the end in a secure manner. Our findings contribute toward more SDN-based security of data-sharing by providing a testbed-based proof of the efficiency and performance of Blockchain technology in ensuring the security of data-sharing in the edge-computing environment.