Visible to the public Re-encrypted Data Access Control Scheme Based on Blockchain

TitleRe-encrypted Data Access Control Scheme Based on Blockchain
Publication TypeConference Paper
Year of Publication2020
AuthorsWang, Z., Chen, L.
Conference Name2020 IEEE 6th International Conference on Computer and Communications (ICCC)
KeywordsAccess Control, Aerospace electronics, blockchain, cloud computing, compositionality, Encryption, expandability, privacy, privacy protection, Proxy re-encryption, pubcrawl, RBAC, Resiliency, Thermal stability
AbstractNowadays, massive amounts of data are stored in the cloud, how to access control the cloud data has become a prerequisite for protecting the security of cloud data. In order to address the problems of centralized control and privacy protection in current access control, we propose an access control scheme based on the blockchain and re-encryption technology, namely PERBAC-BC scheme. The access control policy is managed by the decentralized and immutability characteristics of blockchain, while the re-encryption is protected by the trusted computing characteristic of blockchain and the privacy is protected by the identity re-encryption technology. The overall structure diagram and detailed execution flow of the scheme are given in this paper. Experimental results show that, compared with the traditional hybrid encryption scheme, the time and space consumption is less when the system is expanded. Then, the time and space performance of each part of the scheme is simulated, and the security of blockchain is proved. The results also show that the time and space performance of the scheme are better and the security is stronger, which has certain stability and expandability.
Citation Keywang_re-encrypted_2020