Attribute-based searchable encrypted scheme with edge computing for Industrial Internet of Things

Abstract

Storing the data generated in the Industrial Internet of Things has become a method to solve data redundancy. Still, data security and privacy protection have become an issue that cannot ignore. Attribute-based searchable encryption can encrypt and retrieve data without exposing users’ privacy. In this paper, we introduce an attribute-based searchable scheme combining online/offline encryption and outsourcing decryption technology, which uses a reusable ciphertext pool to reduce the computation in the encryption stage, and uses an edge server to reduce the cost of resource-constrained users through outsourcing decryption. To improve the solution’s security, the specified server can authenticate the cloud server in the searchable location. Finally, our scheme is proven to satisfy CCA2-secure and is efficient in performance and safety analysis. In a word, the algorithm is suitable for the actual Industrial Internet of Things environment.