论文标题
多端秘密密钥协议收发器的渠道模型
A Channel Model of Transceivers for Multiterminal Secret Key Agreement
论文作者
论文摘要
如果没有初始假设，信息理论秘密密钥协议是不可能的。一种类型的初始假设是通过使用连接终端的嘈杂通道生成的相关随机变量。终端使用可靠的公共渠道使用相关的随机变量和通信来获得共享的秘密密钥。先前的通道模型假设每个终端要么控制一个输入到通道，要么接收通道的一个输出变量。在本文中，我们提出了一个新的收发通道模型，每个端子同时控制输入变量并观察（嘈杂）通道的输出变量。我们为该收发器模型的秘密关键容量（即最高可实现的密钥速率）提供了上限和下限，并在公共通信是非相互作用和嘈杂渠道的输入变量的条件下证明了秘密关键能力。
Information theoretic secret key agreement is impossible without making initial assumptions. One type of initial assumption is correlated random variables that are generated by using a noisy channel that connects the terminals. Terminals use the correlated random variables and communication over a reliable public channel to arrive at a shared secret key. Previous channel models assume that each terminal either controls one input to the channel, or receives one output variable of the channel. In this paper, we propose a new channel model of transceivers where each terminal simultaneously controls an input variable and observes an output variable of the (noisy) channel. We give upper and lower bounds for the secret key capacity (i.e., highest achievable key rate) of this transceiver model, and prove the secret key capacity under the conditions that the public communication is noninteractive and input variables of the noisy channel are independent.
