A BLOCKCHAIN AND MICROSERVICES -BASED SECURITY MANAGER IN IOT ENVIRONMENT

In the Internet of Things (IoT), technical communication developments have in- creased the significance of federated cloud systems with cloud providers for exchange transactions and achieving interoperability. Monolithic IoT systems implement service-oriented architecture (SOA), which is complex for supporting interoperabil- ity and security methods during communicating transactions in a federated cloud system between different cloud providers. In contrast, microservice (MS) technolo- gies allow services to split for independent tasks. In this thesis, we introduce BC security managers based on MS technology for federated cloud systems in an IoT environment. In addition, we present the design of the Federation Security System Manager (FSSM) MS with interoperability features. This enables the exchange of transactions between permissioned BC Security Managers (BCSM) MS at different cloud providers, with some constraints. Furthermore, a security framework based on MSs and BCs is implemented to achieve interoperability across different cloud providers. These security mechanisms are deployed based on smart contracts to ensure security and validate transactions between the permissioned BCSM MSs. Finally, we provide the development process of the proposed framework, which allows for interoperability and ensures the security and privacy of the exchange transactions in an IoT environment based on the federated cloud system.