摘要
针对真实世界大数据应用,以区块链为基础设施,构建支持数据溯源、隐私保护、以患者为中心的数据共享平台,开发了原型系统,进行了关键算法验证.基于最小哈希的局部敏感哈希的非标注数据溯源技术,结合区块链,实现数据来源可追溯可信可验证;设计专门的隐私保护隔离区,采用容器和虚拟机双层隔离保护机制,程序将加密发布的真实世界数据下载到隔离区内,解密后分析处理,用后解密明文立刻销毁,实现数据隐私保护;同时使用区块链、控制流图、最小哈希、局部敏感哈希等技术登记分析程序指纹,进行计算程序身份安全验证.
For real-world big data applications,blockchain is used as a trusted infrastructure to build a data sharing platform supporting data traceability,privacy protection and patient-centered functions,and a prototype system is developed to verify key algorithms.The data traceability function uses non-labeled data traceability technology based on LSH of Minhash,combined with the blockchain,to achieve traceable,credible and verifiable data sources;privacy protection function,a special privacy protection isolation area is designed,and a double-layer isolation protection mechanism for containers and virtual machines is adopted.The program downloads encrypted real-world data into the isolation area,analyzes and processes after decryption,and immediately destroys the decrypted plaintext after use.At the same time,using blockchain,control flow graph,minimum hash,local sensitive hash and other technologies to register the fingerprint of the analysis program,and verify the identity security of the computing program.
作者
刘尚麟
廖思捷
杨春霞
范佳
Liu Shanglin;Liao Sijie;Yang Chunxia;Fan Jia(Technical Research Department,Sichuan Innovation Center of Industry Cyber Security Co.,Ltd.,Chengdu 610041;Blockchain R&D Center,China Electronics Technology Group Cyber Security Co.,Ltd.,Chengdu 610041)
出处
《信息安全研究》
2022年第1期49-54,共6页
Journal of Information Security Research
