摘要
针对现有营商环境评估系统中企业数据可信度低、易篡改的问题,提出营商环境评估的企业级复合区块链构建方法,采用链上和链下数据协同的方式,对企业原始数据进行存储.改进区块链哈希函数,提出基于SHA256算法的企业原始数据加密方法.引入Key-Value存储模式进行链下基于非易失性内存的Level DB存储,降低系统的通信和存储压力.提出数据链上存储方法,分别将Level DB中的Key值对应存储到基于DAG的Conflux公有链,企业状态数据对应存入到联盟链,为营商环境评估提供可信的存证数据.通过与改进前的Level DB数据库和现有的区块链存储模型进行实验对比,实验结果表明,提出的企业级复合区块链构建方法在读写性能、存储效率两方面均优于现有方法.
An enterprise composite blockchain construction method for business environment evaluation was proposed in order to address the problems of low credibility and easy tampering of enterprise data in the existing business environment evaluation system.The synergistic approach of on-chain and off-chain data was adopted to store the original enterprise data.The blockchain hash function was improved,and an encryption method based on SHA256 algorithm was proposed for enterprise raw data.Key-Value storage mode was introduced for off-chain nonvolatile memory-based Level DB storage in order to reduce system communication and storage pressure.The data on-chain storage method was proposed to store the Key values in Level DB corresponding to the DAG-based Conflux public chain and the enterprise state data corresponding to the consortium chain so as to provide trustworthy depository data for the evaluation of the business environment.Experimental comparison with the Level DB database before improvement and the existing blockchain storage model was conducted.The experimental results show that the proposed enterprise composite blockchain construction method has significantly improved read and write performance and storage efficiency.
作者
李素
陈泽
宋宝燕
张浩林
LI Su;CHEN Ze;SONG Baoyan;ZHANG Haolin(School of Information,Liaoning University,Shenyang 110036,China)
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2024年第5期891-899,共9页
Journal of Zhejiang University：Engineering Science
基金
国家重点研发计划资助项目(2023YFC3304900)
辽宁省应用基础研究计划资助项目(2022JH2/101300250)
辽宁省教育厅高校基本科研项目(理工类)面上项目(揭榜挂帅服务地方项目)(JYTMS20230761)
教育部产学合作协同育人项目(230701160261310)。
关键词
营商环境评估
Level
DB
机器学习
公有链
联盟链
business environment evaluation
Level DB
machine learning
public blockchain
consortium blockchain
作者简介
李素(1997-),女,博士生,从事大规模图处理技术、大数据处理技术、区块链技术和流数据处理技术的研究.orcid.org/0000-0002-7520-509X.E-mail:liisuu@163.com;通信联系人:张浩林,男,工程师,博士.orcid.org/0009-0000-6652-0410.E-mail:18911291179@189.cn。
