基于本地化差分隐私和属性基可搜索加密的区块链数据共享方案

doi:10.11959/j.issn.1000-436x.2023103

Abstract

Abstract:

Aiming at the problem that traditional cloud-based data sharing schemes rely on trusted third parties and only focus on data privacy protection or access control, a blockchain data sharing scheme based on localized difference privacy and attribute-based searchable encryption was proposed.The blockchain and cloud server were combined to store data chain by chain and provide efficient, reliable and tamper-proof data sharing.Firstly, the localization difference privacy was introduced to preprocess the shared data to protect the privacy of the data owner and resist the attack of the untrusted third party.Secondly, the searchable encryption technology and attribute-based encryption were combined to realize data privacy protection, support ciphertext retrieval, and provide fine-grained access control for shared data.Finally, the safety, the correctness proof, and the experimental analysis proves that the proposed scheme meets the safety objectives.

Key words: block chain, localized differential privacy, data sharing, attribute-based searchable encryption, privacy protection

CLC Number:

TP309

Tao FENG, Liqiu CHEN, Junli FANG, Jianming SHI. Blockchain data sharing scheme based on localized difference privacy and attribute-based searchable encryption[J]. Journal on Communications, 2023, 44(5): 224-233.

Figures/Tables 5

References 21

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方案	云存储	区块链	可追溯性	抵御不可信第三方攻击	隐私性	安全搜索
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Blockchain data sharing scheme based on localized difference privacy and attribute-based searchable encryption

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