A blockchain-based transaction system for private data sharing and trading

A blockchain-based transaction system for private data sharing and trading
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基于区块链的隐私数据共享和交易交易系统

DOI:
10.1007/s11768-022-00098-8
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发表时间:
2022-05
影响因子:
1.4
通讯作者:
Zhendong Ai
Zhendong Ai
中科院分区:
计算机科学4区
文献类型:
--
作者:
Wei Cui;Yu Pan;Zhendong Ai

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为解决隐私数据管理问题并实现隐私保护的数据共享,本文提出了一种基于区块链的交易系统Ecare,该系统具有信息透明、公平性和可扩展性等特点。所提系统制定了多种隐私数据访问控制策略,并通过链上交易实现数据交易与共享,这使得交易记录透明且不可篡改。在我们的系统中,隐私数据经过加密处理,基于角色的账户模型确保数据访问需得到所有者授权。此外,我们自主提出了一种名为交易证明(PoT)的新型共识协议,以提高共识效率。Ecare的价值不仅在于它整合了远程医疗、数据交易等功能,还在于它将这些行为转化为存储在区块链中的交易事件,对所有参与者而言都透明且不可篡改。所提系统可扩展至更通用的大数据隐私保护和数据交易场景。
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.
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