End-to-End Encryption for Securing Communications in Industry 4.0

In Industry 4.0 (I4.0), reliable data sharing between multiple entities is profoundly significant for both the business-level and the manufacturing operations-level collaboration. Eventually, machine-to-machine (M2M) communication technology can be a key underlying technology for I4.0, where devices (e.g., sensors, actuators, and gateways) can exchange information with each other autonomously, ensuring data confidentiality and integrity. In this paper, we propose a transparent message level end-to-end encryption layer for Message Queue Telemetry Transport (MQTT). We exploit Ciphertext-Policy Attribute-based encryption (CP-ABE) that is implemented using the Fast Attribute Message Encryption (FAME) CP-ABE scheme. We also evaluate the time and space performance of the FAME CP-ABE scheme.