基于区块链的跨境贸易数据共享与访问控制方案  

Scheme of Cross-border Trade Data Sharing and Access Control Based on Blockchain

作　　者：李云鹏 姜茸 梁志宏 LI Yun-Peng;JIANG Rong;LIANG Zhi-Hong(Yunnan Key Laboratory of Service Computing,Yunnan University of Finance and Economics,Kunming 650221,China;School of Logistics and Management Engineering,Yunnan University of Finance and Economics,Kunming 650221,China;College of Big Data and Intelligent Engineering,Southwest Forestry University,Kunming 650224,China)

机构地区：[1]云南财经大学云南省服务计算重点实验室,昆明650221 [2]云南财经大学物流与管理工程学院,昆明650221 [3]西南林业大学大数据与智能工程学院,昆明650224

出　　处：《计算机系统应用》2024年第10期97-105,共9页Computer Systems & Applications

基　　金：云南省科技计划中央引导地方科技发展专项(202307AB110009)。

摘　　要：随着全球经济一体化的发展,跨境贸易已成为全球经济发展的重要推动力量.然而,跨境贸易目前正面临着诸如数据安全、信息孤岛和信息不对称等问题.基于此,本文提出了一种基于区块链的跨境贸易数据共享与访问控制方案.该方案采用区块链和星际文件系统(IPFS)结合的协同存储机制,有效降低了区块链的存储负载.另外,利用了双密钥回归模型结合时间维度对数据进行加密和存储管理,通过设定不同的时间段来进一步划分访问权限,限制了数据用户对时间跨度范围外的非必要访问.最后,设计了相应的智能合约,实现对数据整个周期流程的高效管控,从而有效提升了数据共享操作的执行效率.实验结果表明,本方案能够实现跨境贸易数据的安全共享和对用户进行细粒度访问控制.With the development of global economic integration,cross-border trade has become an important driving force for global economic development.However,it is facing issues such as data security,information silos,and information asymmetry.Based on this,this study proposes a blockchain-based scheme for data sharing and access control in cross-border trade.The scheme uses a collaborative storage mechanism of blockchain and inter planetary file system(IPFS)to effectively reduce the storage load of blockchain.In addition,a dual key regression model combined with time dimension is adopted to encrypt and store data,as well as assign access permissions by setting different time periods,which limits the unnecessary access of data users outside a certain time span.Finally,corresponding smart contracts are designed to achieve efficient management of the entire life cycle flow of data,improving sharing efficiency.The experimental results show that the proposed scheme can achieve secure data sharing in cross-border trade and fine-grained access control for users.

关 键 词：跨境贸易数据 区块链 访问控制 智能合约 星际文件系统(IPFS) 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论] F752[自动化与计算机技术—计算机科学与技术]