Secure Data Distribution Architecture in IoT Using MQTT

Message Queuing Telemetry Transport (MQTT) is one of the standard application layer protocols for Internet Things. It uses a publish/subscribe mechanism which organizes set clients around server called broker, delivers published data to its intended recipients. This article proposes an architecture that allows MQTT brokers cooperate and share their with other interested brokers. service-oriented wraps broker well defined WebSockets-based interface it offer topic space The wrapped service, discovers services through discovery service. Each service only connects have are interested. Furthermore, these authenticated by obtaining tokens from authentication registers issues JSON Web Tokens them. These contain identity claims owners they can be verified without contacting proposed simplifies sharing improves security in scenarios multiple where move between In scenarios, need obtain based on interests, constantly changing. does so isolating into discovered consumed over well-defined interfaces. was implemented javascript using 3.1.1 complaint library. We demonstrate performance characteristics our implementation three designed compare delay publisher subscriber when operate within same different results show overhead 50% two synthetic (performed single machine) 27% third scenario performed cloud virtual machines hosting simulated clients.