Efficient and secure cross-domain data sharing scheme with traceability for Industrial Internet

Abstract

As the Industrial Internet undergoes swift growth, secure data sharing has become a crucial issue. However, currently most schemes are mainly applied to single-domain environments, and with the increasing demand for data sharing among various parties, the need for cross-domain data interaction becomes increasingly urgent. To solve the problem, we propose an efficient and secure industrial data cross-domain sharing scheme based on traceable CP-ABE in this paper. Firstly, a traceable and efficient CP-ABE is proposed, called TE-CP-ABE, which utilizes key conversion and key sanity check to reduce the computational complexity of the client and enable the tracking of malicious users, respectively. Secondly, based on TE-CP-ABE and proxy re-encryption technology, we design a traceable and secure cross-domain data sharing scheme for Industrial Internet. This scheme introduces domain proxies for cross-domain authentication and employs proxy re-encryption technology to facilitate policy transformation, breaking down attribute differences between different domains. TE-CP-ABE has been proven to achieve IND-CPA security under the decisional q-BDHE problem, and it efficiently prevents malicious users from abusing their keys. Finally, the proposed scheme is compared with the existing schemes in terms of theoretical analysis and experimental simulation. The results show that the proposed scheme has certain advantages in terms of computing and storage overhead.