基于区块链的电力应用数据安全共享研究

Secure Sharing of Power Application Data Based on Blockchain

随着电力网络智能化的发展,海量的业务数据分散存储于不同的部门中,数据共享的安全性差、流转管控难,如何在保障数据安全隐私性的前提下进行数据安全可控的共享成为难题。针对以上问题,文章提出一种基于区块链的电力应用数据安全共享方法,通过基于属性加密的访问控制提高数据流转中的安全性,避免一对多数据共享时的多次加密,通过区块链分布式账本保证数据标识、加密策略、用户身份与属性密码等隐私数据的安全性,并根据智能合约审计防止用户通过篡改属性信息欺骗访问控制机制。实验结果表明,区块链智能合约能够实现机构间的数据流转管控,具备追踪溯源和异常发现能力。基于HyperLedger Fabric框架搭建的区块链网络上的数据标识上链时延在60-100ms,TPS大于400。

With the development of power network intelligence,massive business data is scattered in different power equipment or databases,and due to the importance and privacy of power data,the sharing security of power agency data has become a problem.At present,business data is stored in clear text in centralized data nodes,which has the disadvantages of poor security and difficult circulation control.In view of the above problems,this paper proposed a secure sharing mechanism of power application data based on blockchain.Security in data flow was improved through attribute-based access control mechanisms to avoid multiple encryption during one-to-many data sharing.The blockchain distributed ledger was used to protect the security of private data such as data identification,encryption policies,user identities and attribute passwords,and to prevent users from defrauding the access control mechanism by tampering with attribute information according to smart contract audits.After testing and analyzing the system,the blockchain smart contract can realize the data flow control between institutions,and has the ability to track and trace and find anomalies.The on-chain delay of data identification on the blockchain network built on the HyperLedger Fabric framework is between 60 ms and 100 ms,and the TPS greater than 400.