Secret key generation with one communicator and a one-shot converse via hypercontractivity
Secret key generation with one communicator and a one-shot converse via hypercontractivity
复制标题
使用一个通信器生成密钥并通过超收缩性进行一次性对话
DOI：
10.1109/isit.2015.7282697
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
S. Verdú
中科院分区：
文献类型：
--
作者：
Jingbo Liu;P. Cuff;S. Verdú
提出了一种新的多方密钥协商模型，其中一个称为通信者的终端可以在所有终端就密钥达成一致之前向其他终端发送公共消息。在稳态无记忆情况下导出可实现区域的单字母表征。新模型概括了一些其他（旧的和新的）密钥协商模型。特别是，使用全知助手生成密钥是一种特殊情况，其中通信者知道所有源，为此我们为每一位通信的密钥导出零速率一次性会话。
A new model of multi-party secret key agreement is proposed, in which one terminal called the communicator can transmit public messages to other terminals before all terminals agree on a secret key. A single-letter characterization of the achievable region is derived in the stationary memoryless case. The new model generalizes some other (old and new) models of key agreement. In particular, key generation with an omniscient helper is the special case where the communicator knows all sources, for which we derive a zero-rate one-shot converse for the secret key per bit of communication.