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题目
《Privacy-preserving and Efficient Aggregation based on Blockchain for
Power Grid Communications in Smart
Communities》
《基于区块链的智能社区电网通信的隐私保护与高效聚合》
本文粗略的看了一下,主要是学习文中区块链在智能电表中的应用。
智能电表挑战:
(1)是可用于数据聚合的信任方。当用户向第三方提交敏感数据时,隐私是最重要的问题。
(2)隐藏用户的真实身份和假名之间的联系。伪名写是伪装用户身份的常见解决方案。
(3)身份验证的速度
论文结构:
* 介绍了相关的隐私保护技术。
* 给出了方案的初步设计
* 详细描述了所提出的方案
* 进行了安全性分析和性能评估
* 总结
方案大概:
因为缺乏可信任的第三方来获取数据聚合,
在每个时间段中随机选择一个用户来聚合所有用户的数据,并将这些数据记录到区块链中,以获得消息的完整性。由于区块链被同一组中的所有用户共享,即使一个恶意用户被选为篡改记录的聚合器,被篡改的数据也会被其他人发现。为了隐藏用户身份和假名之间的联系,我们允许每个用户创建多个假名,并以不同的假名提交其用电量数据。为了在保护用户隐私的同时实现快速认证,我们使用broom过滤器来判断笔名的有效性,并基于零知识证明检查假笔名的存在。
用到的技术:
RSA加密、区块链、身份验证...