区块链数据隐私的可信任监管技术研究  

Research on the Credible Supervision Technology of Data Privacy over Blockchain

作　　者：史玮 蓝龙 王正华[1] 代文昊 SHI Wei;LAN Long;WANG Zheng-hua;DAI Wen-hao(School of Computer Science,National University of Defense Technology;Institute of Quantum Information and State Key Laboratory of High Performance Computing,National University of Defense Technology,Changsha 410073,China;School of Cyberspace Security,University of Chinese Academy of Sciences,Beijing 100101,China)

机构地区：[1]国防科技大学计算机学院 [2]国防科技大学量子信息研究所兼高性能计算国家重点实验室,湖南长沙410073 [3]中国科学院大学网络空间安全学院,北京100101

出　　处：《软件导刊》2021年第12期1-8,共8页Software Guide

基　　金：国家自然科学基金面上项目(61772542)。

摘　　要：目前,区块链用户对不同层级的中间机构缺乏行之有效的监管和授权手段,使得用户数据隐私存在泄露风险。针对上述问题,研究适用于区块链数据隐私保护的可信任监管技术方案,并在经典的BIP32协议上进行丰富和扩展,在新的协议中主要设计并实现一种动态授权策略,授权策略通过改变和设置监管权限使隐私数据真正掌握在用户手中。实验结果和性能对比表明,该方案提出的区块链数据隐私保护方法高效、稳定,并具有很强的实用性,适用于可信任监管的数据隐私保护场景。同时,实验证明随着加密密钥深度的增加,监管时间呈线性增长。Currently,blockchain users lack effective supervision and authorization for different levels of intermediary organizations,which puts the user data privacy at the risk of leakage.To address the above problem,focus on the data privacy protection and its credi⁃ble supervision technology over blockchain.The proposed credible supervision scheme is enriched and extended from the classic BIP32 protocol,in the new protocol,mainly design and implement a new dynamic authorization policy,users can thus control the private data in their hand by only dynamically changing supervision authorization policies.Experimental results and performance comparisons show that our scheme is efficient,stable and highly practical,suitable for user data privacy protection and its credible supervision scenarios.At the same time,with the increase of encryption key depth,the supervision time increases linearly.

关 键 词：区块链 隐私保护 可信任监管 授权控制 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]