ICDAC: Intelligent Contracts Driven Access Control Model for IoT Device Communication

In the Internet of Things (IoT) epoch, the seamless communication of smart devices through autonomous collaboration demands real-time IoT networks to possess a high level of intelligence. However, the resource-constrained nature of IoT limits the adoption of traditional intuitive access control models for communication in dynamic, complex, and large-scale applications. The frequent changes in the IoT environment urge creating a secured autonomous dynamic access control system for device-to-device communication to secure device-sensitive data and detect abnormal access behaviors to ensure the smart infrastructure is free from cyberattacks. Smart Home infrastructure with various sensors and validation systems is used as the target application in the proposed system. Addressing the challenges, the novel design of an intelligent access control model to protect the privacy of device information and data is presented by integrating Artificial Intelligence and Blockchain. The attribute-based access policies are designed to create synthetic datasets by encompassing the if-then rule. Smart Home devices and transaction data are secured under the hashed storage structure IPFS. The Deep Learning-based ResNet model is employed in the design of intelligent contracts, and its execution is focused on the required device only. The authentic and immutable nature of the blockchain enforces the end-to-end security of the proposed system with an enhanced accuracy of 96.8% in access decisions to accommodate the Smart Home Infrastructure.