基于区块链的链下数据库高吞吐量数据可信保障方法  

High throughput data safeguard method for off-chain database based on blockchain

作　　者：雷建云[1,2] 彭佳丽 帖军[1,3] 孙翀[1,3] 王子珊[1,3] LEI Jianyun;PENG Jiali;TIE Jun;SUN Chong;WANG Zishan(College of Computer Science,South-Central Minzu University,Wuhan 430074,China;Hubei Provincial Engineering Research Center for Intelligent Management of Manufacturing Enterprises,South-Central Minzu University,Wuhan 430074,China;Hubei Provincial Engineering Research Center of Agricultural Blockchain and Intelligent Management,South-Central Minzu University,Wuhan 430074,China)

机构地区：[1]中南民族大学计算机科学学院,武汉430074 [2]中南民族大学湖北省制造企业智能管理工程技术研究中心,武汉430074 [3]中南民族大学农业区块链与智能管理湖北省工程研究中心,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2023年第4期518-525,共8页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：教育部科技发展中心高校产学研创新基金——“青苔数智融合”协同创新资助项目(2020QT08);国家民委中青年英才培养计划资助项目(MZR20007);湖北省科技重大专项资助项目(2020AEA011);武汉市科技计划应用基础前沿资助项目(2020020601012267)。

摘　　要：传统结构的区块链在保证系统去中心化需求的同时占用了大量存储空间,且吞吐量无法得到提升.为了更加高效、安全地存储海量数据,提出了一种区块链结合数据库的架构,它可以提高系统整体的吞吐量.此外,区块链适用于云存储环境下日志型数据的存储,如视频日志、音频日志、图像日志等日志型数据,但不适合常规内容频繁更新的使用场景,如数据库应用场景.基于此,提出了一种数据可信保障方法,通过验证事务日志是否发生改变推导出数据是否被恶意篡改.采用Hyperledger Fabric结合MySQL的实例,通过实验说明该方法可验证频繁更新的数据库数据是被正常更新还是被异常篡改,并且可恢复数据库的安全.Blockchain with traditional structure occupies a lot of storage space while ensuring the decentralization of the system,and the throughput cannot be improved.In order to store massive data more efficiently and securely,a blockchain combined with database architecture is proposed,which can improve the overall throughput of the system.In addition,blockchain is suitable for the storage of log data in cloud storage environment,such as video logs,audio logs,image logs and other log data;however,it is not suitable for scenarios where regular content is frequently updated,such as database application scenarios.Based on this,a data trustworthiness assurance method is proposed,which deduces whether the data is maliciously tampered by verifying whether the transaction log is changed.Hyperledger Fabric and MySQL examples are used to demonstrate that the method can verify whether the frequently updated database data is normally updated or abnormally tampered,and restore the security of the database.

关 键 词：区块链 数据库 吞吐量 事务日志 篡改 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]