基于区块链的多级征信数据安全存储与共享系统
Blockchain-based Multi-level Data Security Storage and Sharing System for Credit Scenarios
陈良贵 1张益广 2邹高 1沙大峣 1吕智慧2
作者信息
- 1. 上海市联合征信有限公司,上海 200032
- 2. 复旦大学 计算机科学技术学院,上海 200438
- 折叠
摘要
在现阶段的企业信用管理体系中,不同实体间掌握的数据多样并异构,实体间共享数据困难且存在数据孤岛、单点故障与隐私泄露等问题,而区块链因其天然的去中心化和防篡改特性,可很好地解决该问题.因此,基于区块链提出了一个多级征信数据安全存储和共享系统.首先,通过区块链链上和链下存储相结合的方法,实现了多级数据的分类混合存储,解决了区块链的存储瓶颈;其次,提出了一种基于优先级的多级优先队列排序算法,为多级数据提供资源公平、性能优先的排序调度服务,从而提升了区块链服务质量;最后,设计一个细粒度的访问控制策略,通过通道和文件加密解决了IPFS可能存在的文件泄漏问题,并进一步提升了区块链存储文件的安全性和可靠性.实验表明,系统有效解决了传统共享存在的冗余和安全性问题,实现了高效的数据安全存储和可靠共享,且能满足实际应用的性能需求.
Abstract
In the current enterprise credit management system,data held by various entities is both diverse and heterogeneous,leading to sig-nificant challenges in data sharing.Compounding this scenario are issues such as data silos,single points of failure,and privacy breaches.Blockchain technology,renowned for its inherent decentralization and tamper-proof characteristics,effectively addresses these challenges.Accordingly,this paper introduces a multi-tiered credit data storage and sharing system based on blockchain technology.Initially,the system employs a combination of on-chain and off-chain storage to achieve multi-tiered,hybrid data storage,thus overcoming the storage bottle-necks associated with blockchain.Subsequently,a priority-based,multi-level priority queue sorting algorithm is proposed.This innovative al-gorithm ensures equitable resource allocation and performance-prioritized scheduling for multi-level data,thereby enhancing the overall qual-ity of blockchain services.Furthermore,a fine-grained access control strategy is developed.Integrating both channel and file encryption,this strategy effectively mitigates potential file leakage issues in the InterPlanetary File System(IPFS)and substantially improves the security and reliability of blockchain file storage.Experimental results indicate that the system not only effectively resolves the redundancy and security is-sues inherent in traditional sharing models but also achieves efficient,secure data storage and reliable sharing,all while fulfilling the perfor-mance demands of practical applications.
关键词
区块链/数据共享/访问控制/数据存储Key words
blockchain/data sharing/access control/data storage引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据