Multiuser secret key generation based on received signal

Aolin CAI; Liang JIN; Zhou ZHONG; Yangming LOU

doi:10.11959/j.issn.2096-109x.2018082

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Multiuser secret key generation based on received signal

Papers | 更新时间：2024-06-03

- Multiuser secret key generation based on received signal
- Chinese Journal of Network and Information Security Vol. 4, Issue 10, Pages: 52-58(2018)
- 作者机构：
- 作者简介：
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- DOI：10.11959/j.issn.2096-109x.2018082
  CLC： TP393
- Online First：2018-10，
  
  Published：15 October 2018
- 稿件说明：
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Aolin CAI, Liang JIN, Zhou ZHONG, et al. Multiuser secret key generation based on received signal[J]. Chinese Journal of Network and Information Security, 2018, 4(10): 52-58.
DOI：

Aolin CAI, Liang JIN, Zhou ZHONG, et al. Multiuser secret key generation based on received signal[J]. Chinese Journal of Network and Information Security, 2018, 4(10): 52-58. DOI： 10.11959/j.issn.2096-109x.2018082.

摘要

基于信道特征生成密钥的方案为通信安全带来了新思路。但在多用户慢衰落条件下，基于信道特征的密钥生成方案由于参数变化慢，导致密钥更新慢。针对此问题，提出了基于接收信号的多用户密钥生成方案，即通过块对角化预编码实现多个随机信号流的分发，使基站与用户能够从用户接收信号中提取密钥。仿真结果表明，提出的基于接收信号的多用户密钥生成方案能够有效提高多用户在准静态及慢衰落条件下的密钥速率。

Abstract

The secret key generation method based on channel characteristic provides a new way for communication security.But under the conditions of multiuser and slow fading

because of the slow channel parameter changing rate

using the secret key generation method above can result in a low secret key rate.To solve this problem

a multiuser secret key generation method based on the received signal was proposed.By distributing the random signals to different users using block diagonalization precoding

base station and user can extract the secret key from the received signal.The novel method could significantly increase the secret key rate of multiuser under the quasi-static channel and slow-fading channel

which is verified by simulations.

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references

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