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| A blockchain-based transaction system for private data sharing and trading |
| WeiCui1,YuPan2,ZhendongAi1 |
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| (1 School of Automation Science and Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China;2 College of Control Science and Engineering, Zhejiang University, Hangzhou 310058, Zhejiang, China) |
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| 摘要: |
| To address the private data management problems and realize privacy-preserving data sharing, a blockchain-based transaction
system named Ecare featuring information transparency, fairness and scalability is proposed. The proposed system formulates
multiple private data access control strategies, and realizes data trading and sharing through on-chain transactions, which
makes transaction records transparent and immutable. In our system, the private data are encrypted, and the role-based account
model ensures that access to the data requires owner’s authorization. Moreover, a new consensus protocol named Proof of
Transactions (PoT) proposed by ourselves has been used to improve consensus efficiency. The value of Ecare is not only that
it aggregates telemedicine, data transactions, and other features, but also that it translates these actions into transaction events
stored in the blockchain, making them transparent and immutable to all participants. The proposed system can be extended
to more general big data privacy protection and data transaction scenarios. |
| 关键词: Private data sharing · Blockchain · Data access control · Proof of Transactions |
| DOI：https://doi.org/10.1007/s11768-022-00098-8 |
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| 基金项目:This work was supported by the National Key R&D Program of China (No. 2018YFB1700100) and the National Natural Science Foundation of China (No. 61873317). |
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| A blockchain-based transaction system for private data sharing and trading |
| Wei Cui1,Yu Pan2,Zhendong Ai1 |
| (1 School of Automation Science and Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China;2 College of Control Science and Engineering, Zhejiang University, Hangzhou 310058, Zhejiang, China) |
| Abstract: |
| To address the private data management problems and realize privacy-preserving data sharing, a blockchain-based transaction
system named Ecare featuring information transparency, fairness and scalability is proposed. The proposed system formulates
multiple private data access control strategies, and realizes data trading and sharing through on-chain transactions, which
makes transaction records transparent and immutable. In our system, the private data are encrypted, and the role-based account
model ensures that access to the data requires owner’s authorization. Moreover, a new consensus protocol named Proof of
Transactions (PoT) proposed by ourselves has been used to improve consensus efficiency. The value of Ecare is not only that
it aggregates telemedicine, data transactions, and other features, but also that it translates these actions into transaction events
stored in the blockchain, making them transparent and immutable to all participants. The proposed system can be extended
to more general big data privacy protection and data transaction scenarios. |
| Key words: Private data sharing · Blockchain · Data access control · Proof of Transactions |
