Ciphertext policy hidden access control scheme based on blockchain and supporting data sharing

被引：0

作者：

Du, Ruizhong ^{[1
,2
]}

Zhang, Tianhe ^{[1
]}

Shi, Pengliang ^{[1
,2
]}

机构：

[1] School of Cyber Security and Computer, Hebei University, Baoding

[2] Key Lab on High Trusted Information System in Hebei Province, Baoding

来源：

Tongxin Xuebao/Journal on Communications | 2022年 / 43卷 / 06期

基金：

中国国家自然科学基金;

关键词：

attribute revocation; attribute-based encryption; blockchain; data sharing; policy hidden;

D O I：

10.11959/j.issn.1000-436x.2022119

中图分类号：

学科分类号：

摘要：

Although the traditional attribute-based encryption scheme achieves one-to-many access control, there were still challenges such as single point of failure, low efficiency, non-support for data sharing, and privacy leakage. In response to the above problems, a ciphertext policy hidden access control scheme based on blockchain and supporting data sharing was proposed. The prime order bilinear group and the AND-gates on+/− were used to achieve fine-grained access control while avoiding the leakage of user attribute values. Ethereum and interplanetary file system were combined to solve the problem of user attribute revocation and the single point of failure problem in the cloud storage model, and data sharing was realized through proxy re-encryption. Based on the assumption of difficult problems, the safety of the scheme was proved, and the simulation experiment results show that the proposed scheme has high efficiency while implementing policy hiding. © 2022 Editorial Board of Journal on Communications. All rights reserved.

引用

页码：168 / 178

页数：10

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