摘要
区块链系统可以为分享数据的互不信任的多方之间提供可信的基础设施。但是,将原始分享数据直接上链的方式并不适合大规模的数据分享场景。因此,提出了一种数据共享请求和应答记录上链存证、原始数据链下安全传输的数据共享平台架构,该架构在一定程度上可以缓解系统负载过重以及隐私保护方面的问题。最后总结了随着参与节点的增多,以及每秒需要处理的数据共享请求和应答的增多,已有的区块链技术被应用到数据分享和确权领域时,在分布式存储、共识协议、智能合约执行以及轻客户端查询方面面临的挑战以及改进的方向,以期为已有区块链系统应用于数据共享领域指明需要进一步突破的技术瓶颈。
Blockchain system can build a trusted infrastructure for sharing data between multiple untrusted parties.However,directly uploading original shared data to blockchain is not suitable for large-scale data sharing scenarios.A data sharing architecture where data sharing request and response records are deposited on-chain and original data is transmitted securely off-chain was proposed.The architecture can alleviate the problems of system overload and privacy protection to a certain extent.Finally,with the increase of participating nodes and the data sharing requests and responses to be handled per second,the limitations in distributed storage,consensus protocol,smart contract execution,and query from light clients,directions for further research were proposed,in order to specify the technical bottlenecks that need to be further broken for the existing blockchain system applied to the field of data sharing.
作者
张召
田继鑫
金澈清
ZHANG Zhao;TIAN Jixin;JIN Cheqing(School of Data Science and Engineering,East China Normal University,Shanghai 200062,China;MCT Technology,Shanghai 200023,China)
出处
《大数据》
2020年第5期106-117,共12页
Big Data Research
基金
国家自然科学基金资助项目(No.61972152)。
关键词
数据共享
数据确权
数据追溯
区块链
data sharing
data property rights
data tracking
blockchain
