基于区块链与函数加密的隐私数据安全共享模型研究

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

区块链技术给数据共享中的数据确权、数据溯源、数据可信、数据可用等方面提供了新思路,但数据共享中的隐私数据安全仍面临许多挑战。首先回顾当前基于区块链的数据共享研究现状;然后提出一种隐私数据安全共享模型,通过函数加密技术对隐私数据进行加密,结合零知识证明技术生成相关计算的可信证明,实现“数据可用不可见”的安全可靠的数据共享。实验结果显示,该模型的共享时延及经济开销均在可接受范围内,证明了该模型的安全性和可行性。

Blockchain technology has provided new ideas for data validation,data traceability,data trustworthiness,and data availability in data sharing,but privacy data security in data sharing still faces many challenges.Firstly,the current status of blockchain-based data sharing research was reviewed.Then a secure sharing model of privacy data was proposed.By encrypting the privacy data through function cryptography,and generating the proof of computational correctness through zero-knowledge proof technology,a secure and reliable data sharing with“data available but not visible”was realized.The experimental results show that the sharing delay and economic overhead of the model are within the acceptable range,which demonstrates the security and feasibility of the model.