论文标题
迈向安全的空中计算
Towards Secure Over-The-Air Computation
论文作者
论文摘要
我们提出了一种保护空中（OTA）计算方案免受被动窃听的新方法。我们的方法使用友好的干扰器，其信号（与共同的直觉相反）在合法接收器上比在窃听器上更强。我们专注于OTA通道上算术平均值的计算。派生的保密保证转化为在窃听者的均方误差上的下限，而如何提供操作更重要的保证（例如语义安全）的问题仍然可以为将来的工作开放。证明安全保证的关键要素是频道可分胜性的已知结果，以及对复合渠道编码的现有可实现性结果的概括。
We propose a new method to protect Over-The-Air (OTA) computation schemes against passive eavesdropping. Our method uses a friendly jammer whose signal is -- contrary to common intuition -- stronger at the legitimate receiver than it is at the eavesdropper. We focus on the computation of arithmetic averages over an OTA channel. The derived secrecy guarantee translates to a lower bound on the eavesdropper's mean square error while the question of how to provide operationally more significant guarantees such as semantic security remains open for future work. The key ingredients in proving the security guarantees are a known result on channel resolvability and a generalization of existing achievability results on coding for compound channels.
