Design and research of a security component sharing mechanism for smart production lines based on smart contracts

Abstract

With the widespread application of Cyber-Physical Systems (CPS) in intelligent manufacturing, ensuring the security and trustworthiness of components within the system has become a significant challenge. Traditional security control mechanisms face issues with managing large-scale device access, particularly in intelligent manufacturing production lines, where effectively managing the sharing and access permissions of security components is crucial. This paper proposes a smart contract-based secure component-sharing mechanism for intelligent manufacturing production lines, aiming to enhance the trustworthiness and efficiency of security component sharing within CPS. By combining blockchain technology with an Attribute-Based Access Control (ABAC) model, we design an SC-ABAC framework, which uses smart contracts to manage user attributes, component attributes, and access control policies, thereby ensuring trustworthy access control of security components. Within this framework, access requests go through a policy-matching process and attribute retrieval for users and components, with predefined rules determining whether access permissions are granted. The framework supports dynamic policy updates and deletions, providing more flexible security management. Furthermore, the dynamic access control function in the smart contract incorporates time-based conditions to enhance the precision of access control. By leveraging the decentralized nature of blockchain, this mechanism not only enhances data security but also reduces the fragmentation issues inherent in traditional access control systems. Experimental results verify the feasibility and effectiveness of the proposed framework.