Verifiable Data Sharing Based on Autonomous Path Proxy Re-Encryption for Industrial Internet of Things

In the Industrial Internet of Things (IIoT), massive amounts of data are generated and shared among different industrial entities, and it is crucial to realize the security and flexibility of data sharing. Autonomous path proxy re-encryption technology enables the autonomous creation of an ordered data-sharing path as specified by the data owner, supporting multi-hop re-encryption. However, the security of this technology requires further enhancement. Therefore, we propose a verifiable data-sharing scheme. To prevent data leakage due to collusion between the proxy and users, we introduce blockchain technology to supervise the decryption behavior of users in the autonomous path. Second, we verify the proxy re-encryption computation, ensuring its validity. Finally, a security analysis demonstrates that the proposed scheme meets the security requirements. Furthermore, we evaluated the performance of the proposed scheme, and the results show that our scheme has only increased less overhead, but has enhanced security.