大数据

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基于区块链与函数加密的隐私数据安全共享模型研究

李懿1, 2, 3,王劲松1, 2, 3,张洪玮1, 2, 3   

  1. 1.天津理工大学计算机科学与工程学院,天津 300384;
    2.智能计算及软件新技术天津市重点实验室,天津 300384;
    3.计算机病毒防治技术国家工程实验室,天津 300457
  • 作者简介:李懿(1997- ),男,天津理工大学计算机科学与工程学院博士生,主要研究方向为区块链安全及应用、联邦学习。 王劲松(1970- ),男,博士,天津理工大学计算机科学与工程学院教授,中国计算机学会(CCF)理事,计算机病毒防治技术国家工程实验室副主任,主要研究方向为网络安全、数据智能、区块链等。 张洪玮(1990- ),男,博士,天津理工大学计算机科学与工程学院讲师,中国计算机学会(CCF)区块链专委执行委员。主要研究方向为:区块链、数据安全、隐私保护。

Research on data security sharing scheme based on blockchain and function encryption

LI Yi1, 2, 3, WANG Jinsong1, 2, 3, ZHANG Hongwei1, 2, 3#br#   

  1. 1. School of computer science and Engineering, Tianjin University of Technology, Tianjin 300380, China 
    2. Tianjin Key Laboratory of Intelligent Computing and new software technology, Tianjin 300384, China
    3. National Engineering Laboratory of computer virus prevention and control technology, Tianjin 300457, China.

摘要: 在大数据时代背景下,数据共享随着数据价值的体现而逐步兴起。针对数据共享过程中常见的隐私泄露问题,本研究以区块链技术为信任基础,构建链上数据共享平台,并结合函数加密技术和零知识证明技术实现可验证计算结果共享。提出了一种实现“数据可用不可见”的安全共享模型。最后进行了实验,并对实验结果进行了分析,证实了该模型的可行性和安全性。

关键词: 区块链, 函数加密, 零知识证明, 数据共享, 隐私保护

Abstract: In the context of the big data era, data sharing has gradually emerged with the embodiment of data value. To address the common privacy leakage problem in data sharing, this study uses blockchain technology as the basis of trust to build an on-chain data sharing platform, and combines function cryptography and zero-knowledge proof technology to achieve verifiable computation result sharing. A secure sharing model for “data available but not visible” is proposed. Finally, experiments are conducted and the results are analyzed to confirm the feasibility and security of the model.

Key words: blockchain, functional encryption, zero knowledge proof, data sharing, privacy protection

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