Blockchain-Based Fair and Fine-Grained Data Trading With Privacy Preservation

In this article, we propose a blockchain-based fair and privacy-preserving data trading scheme that supports fine-grained data selling. First, to achieve fairness for trading participants, by incorporating attribute-based credentials, encryption, and zero-knowledge proof, we design a data trading sc...

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Vydáno v:IEEE transactions on computers Ročník 72; číslo 9; s. 2440 - 2453
Hlavní autoři: Xue, Liang, Ni, Jianbing, Liu, Dongxiao, Lin, Xiaodong, Shen, Xuemin
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 01.09.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Algorithms
Availability
Blockchain
Blockchains
Cryptography
Data privacy
Electronic mail
Encryption
fair data trading
fine-grained data selling
Hospitals
Privacy
privacy preservation
Public key
Smart contracts
ISSN:0018-9340, 1557-9956
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Shrnutí:In this article, we propose a blockchain-based fair and privacy-preserving data trading scheme that supports fine-grained data selling. First, to achieve fairness for trading participants, by incorporating attribute-based credentials, encryption, and zero-knowledge proof, we design a data trading scheme where a buyer first publishes the required data attributes on the blockchain, and a data seller can demonstrate data availability in ciphertext by only disclosing the required attributes to a data buyer and proving the authenticity of data. A data buyer transfers funds only if the correct key material is uploaded to the blockchain. Second, to guarantee fine-grained data trading and preserve identity privacy, we build a Merkle hash tree on the ciphertexts of data with a signature on its root node, which allows a data seller to split data into blocks and remove the sensitive information from the data without affecting data availability verification. The public key of the data seller is not leaked to the data buyer during the trading. Moreover, different trading transactions from the same data seller cannot be linked. We formally prove that our scheme achieves the desired security properties: fairness and privacy preservation. Simulation results demonstrate the feasibility and efficiency of the proposed scheme.
Bibliografie:ObjectType-Article-1
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ISSN:0018-9340
1557-9956
DOI:10.1109/TC.2023.3251846