准静态场景下基于智能超表面的密钥生成方法

郝一诺; 金梁; 黄开枝; 肖帅芳

doi:10.11959/j.issn.2096-109x.2021027

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准静态场景下基于智能超表面的密钥生成方法

专题：集成电路硬件安全 | 更新时间：2024-06-03

- 准静态场景下基于智能超表面的密钥生成方法
- Key generation method based on reconfigurable intelligent surface in quasi-static scene
- 网络与信息安全学报 2021年7卷第2期页码：77-85
- 作者机构：
- 作者简介：
  
  [ "郝一诺（1997-），女，江苏徐州人，信息工程大学硕士生，主要研究方向为无线物理层安全。" ]
  [ "金梁（1969- ），男，北京人，博士，信息工程大学教授、博士生导师，主要研究方向为移动通信技术、阵列信号处理、无线物理层安全。" ]
  [ "黄开枝（1973- ），女，安徽滁州人，博士，信息工程大学教授、博士生导师，主要研究方向为宽带移动通信与异构无线网络安全、无线物理层安全。" ]
  [ "肖帅芳（1989-），男，河南许昌人，博士，信息工程大学助理研究员，主要研究方向为无线物理层安全。" ]
- 基金信息：
  
  国防科技创新特区;National Defense Technology Innovation Special Zone;国家自然科学基金;The National Natural Science Foundation of China(61871404)
- DOI：10.11959/j.issn.2096-109x.2021027
  中图分类号： TN918.82
- 网络首发：2021-04，
  
  纸质出版：2021-04-15
- 稿件说明：
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郝一诺, 金梁, 黄开枝, 等. 准静态场景下基于智能超表面的密钥生成方法[J]. 网络与信息安全学报, 2021,7(2):77-85.

Yinuo HAO, Liang JIN, Kaizhi HUANG, et al. Key generation method based on reconfigurable intelligent surface in quasi-static scene[J]. Chinese Journal of Network and Information Security, 2021, 7(2): 77-85.
郝一诺, 金梁, 黄开枝, 等. 准静态场景下基于智能超表面的密钥生成方法[J]. 网络与信息安全学报, 2021,7(2):77-85. DOI： 10.11959/j.issn.2096-109x.2021027.

Yinuo HAO, Liang JIN, Kaizhi HUANG, et al. Key generation method based on reconfigurable intelligent surface in quasi-static scene[J]. Chinese Journal of Network and Information Security, 2021, 7(2): 77-85. DOI： 10.11959/j.issn.2096-109x.2021027.

摘要

针对物联网准静态场景中信道变化缓慢、密钥速率低的问题，提出了一种基于智能超表面（RIS， reconfigurable intelligent surface）的密钥生成方法。首先，利用RIS的捷变特性构造快速变化的信道；然后，基站（BS，base station）与合法用户通过信道估计、量化、信息协商等步骤从信道信息中提取对称密钥；最后，对相干时间内密钥生成和数据传输进行最优时间分配，实现最大传输速率的“一次一密”。仿真结果表明，所提方法的密钥速率高于现有的中继辅助、随机信号流和随机数方法，并且随着RIS反射单元个数和相干时间内信道估计次数的增加，密钥速率有进一步的提高。

Abstract

Aiming at the problems of slow channel changes and low key generation rate in IoT quasi-static scenarios

a key generation method based on reconfigurable intelligent surface (RIS) was proposed.First

the agility characteristics of RIS was used to construct a fast-changing channel.Then

the base station and legitimate users extracted a consistent key from the channel information through channel estimation

conversion

and information negotiation.Finally

optimal time allocation for data transmission and key generation in the coherent time to achieve the maximum transmission rate of one-time pad.The simulation results show that the key generation rate of proposed method is higher than that of the existing relay-assisted method

random signal flow method and random number method

and as the number of RIS reflection units and frequency of channel estimation in the coherence time increase

the key generation rate will be further improve.

关键词

Keywords

references

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