Research Article
Blockchain-Based Ciphertext Policy-Hiding Access Control Scheme
@INPROCEEDINGS{10.1007/978-3-031-25538-0_15, author={Ruizhong Du and Tianhe Zhang}, title={Blockchain-Based Ciphertext Policy-Hiding Access Control Scheme}, proceedings={Security and Privacy in Communication Networks. 18th EAI International Conference, SecureComm 2022, Virtual Event, October 2022, Proceedings}, proceedings_a={SECURECOMM}, year={2023}, month={2}, keywords={Fine-grained access control Blockchain Policy-hiding Inner product encryption}, doi={10.1007/978-3-031-25538-0_15} }- Ruizhong Du
Tianhe Zhang
Year: 2023
Blockchain-Based Ciphertext Policy-Hiding Access Control Scheme
SECURECOMM
Springer
DOI: 10.1007/978-3-031-25538-0_15
Abstract
Ciphertext policy attribute encryption(CP-ABE) can realize one-to-many fine-grained access control, which can effectively solve the security problem of shared data. However, most existing CP-ABE protocols exhibit a single point of failure and access policy privacy disclosure problems. To resolve these issues, a blockchain-based ciphertext policy-hiding access control scheme is proposed. First, we propose a vector generation algorithm using vector compression techniques that can improve the efficiency of our scheme. Then, the privacy policy is protected by combining CP-ABE and inner product encryption. We then solve the user attribute revocation problem and single point of failure in the cloud-based access control models using ethereum. Finally, security analysis, the theoretical results, and experimental results show that the proposed solution is secure and efficient.
