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An Efficient Ciphertext-Policy Attribute-Based Encryption Scheme Supporting Collaborative Decryption With Blockchain
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DOI：10.1109/JIOT.2021.3099171.png)
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摘要
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In the last few decades, ciphertext-policy attribute-based encryption (CP-ABE) technology has attracted great interest, since it can provide fine-grained, flexible, and access control for sensitive data to implement a high secure and efficient data-sharing mechanism. In this article, based on the linear secret sharing scheme (LSSS), an efficient scheme is proposed to realize a collaborative decryption function. For any user group, when the user's attribute set cannot access the ciphertext alone, the private key of other users in the same group can be used for collaborative decryption with the permission of the data owner. Our scheme uses the LSSS matrix that can significantly reduce the computation and storage overhead when comparing with the existing schemes. Then, a multiauthorization model is created based on the Bohen-Lynn-Shacham technology in order to solve the key-management issue. Finally, we implemented the specific functions of the framework through JAVA, and built a private chain to verify the feasibility of data transfer between users.
Keyword:
Blockchain
collaborative decryption
linear secret-sharing scheme (LSSS) matrix
secure data sharing
期刊
IF:
8.9
论文数:
1.4W
被引数:
7.8W
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FADB: A Fine-Grained Access Control Scheme for VANET Data Based on BlockchainFADB: 一种基于区块链的VANET数据细粒度访问控制方案.png)
IEEE ACCESS
OAAI
IEEE ACCESSIF3.6
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