计算机科学 ›› 2024, Vol. 51 ›› Issue (5): 414-420.doi: 10.11896/jsjkx.221000037
• 信息安全 • 上一篇
张仲鑫1, 易鸣2, 肖帅芳2
ZHANG Zhongxin1, YI Ming2, XIAO Shuaifang2
摘要： 在静态场景下,多径相位和幅度变化缓慢,基于无线信道特征的物理层密钥速率低,难以满足高速数据业务下的通信安全需求。为此,提出了一种基于RIS多径随机叠加的物理层密钥生成方案。首先,收发双方利用RIS天线的实时可控和方向图的捷变特性,通过空间多径的功率谱特性分离多径;然后,在信道相干时间内多次改变空间多径的功率分配,构造等效快变信道,提高密钥源的随机性;最后,通过量化、协商、隐私放大等操作生成一致的安全密钥。仿真结果表明,与现有基于RIS天线的物理层密钥生成方案相比,所提方案一方面通过发掘信道的多径特征提高了信源熵;另一方面通过多径上的功率分配提高了信源的随机性,为密钥速率带来了一定的增益。
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| [1]HUANG K Z,JIN L,CHEN Y J,et al.Development and new challenges of wireless physical layer key generation technology [J].Journal of Electronics and Information,2020,42(10):2330-2341. [2]ZHANG J,HE B,DUONG T Q,et al.On the Key Generation From Correlated Wireless Channels [J].IEEE Communications Letters,2017,21(4):961-964. [3]ROTTENBERG F,NGUYEN T H,DRICOT J M,et al.CSI-Based Versus RSS-Based Secret-Key Generation Under Correlated Eavesdropping [J].IEEE Transactions on Communications,2021,69(3):1868-1881. [4]ZHANG J,DING M,LI G,et al.Key Generation Based on Large Scale Fading [J].IEEE Transactions on Vehicular Technology,2019,68(8):8222-8226. [5]HU X Y,JIN L,HUANG K Z,et al.Physical Layer Key Gene-ration Scheme Based on Signal Propagation Characteristics [J].Electronic Journal,2019,47(2):483-488. [6]GUO D,CAO K,XIONG J,et al.A Lightweight Key Generation Scheme for the Internet of Things [J].IEEE Internet of Things Journal,2021,8(15):12137-12149. [7]LOU Y M,ZHONG Z,JIN L,et al.Key Generation Scheme Based on Received Signal Waveform [J].Journal of the University of Information Engineering,2017,18(2):166-171. [8]ZHANG S J,JIN L,LOU Y,et al.Secret key generation based on two-way randomness for TDD-SISO system [J].China Communications,2018,15(7):202-216. [9]LI G Y.Research on Theory and Method of Wireless Communication Physical Layer Security [D].Nanjing:University of Southeast,2017. [10]XIAO S F.Research on physical layer key generation technology for Internet of Things [D].Zhengzhou:University of Information Engineering,2018. [11]ALDAGHRI N,MAHDAVIFAR H.Physical Layer Secret Key Generation in Static Environments [J].IEEE Transactions on Information Forensics and Security,2020,15:2692-2705. [12]LIANG Y C,CHEN J,LONG R Z,et al.Reconfigurable intelligent surfaces for smart wireless environments:channel estimation,system design and applications in 6G networks [J].Science China(Information Sciences),2021,64(10):52-72. [13]HAO Y N,JIN L,HUANG K Z,et al.Key generation method based on smart metasurface in quasi-static scene [J].Journal of Network and Information Security,2021,7(2):77-85. [14]YANG J,JI X S,HUANG K Z,et al.Physical layer key generation scheme based on RIS antenna in static scene [J].Chinese Science:Information Science,2022,52(2):253-269. [15]JIN L,LOU Y M,XU X M,et al.Separating Multi-Stream Signals Based on Space-Time Isomerism [C]//2020 International Conference on Wireless Communications and Signal Processing(WCSP).2020:418-423. [16]LOU Y M,JIN L,SUN X L,et al.Multi-path separation and parameter estimation by single DMA in fading channel [J].IET Communications,2022,16(13):1475-1485. [17]ZHANG W.Research on Estimation Algorithm of CoherentSource Direction of Arrival Based on Matrix Reconstruction [D].Harbin:University of Harbin Industry,2021. [18]ADIL M,WYNE S,NAWAZ S J.On Quantization for SecretKey Generation From Wireless Channel Samples [J].IEEE Access,2021,9(2):21653-21668. [19]LI G,ZHANG Z,ZHANG J,et al.Encrypting Wireless Communications on the Fly Using One-Time Pad and Key Generation [J].IEEE Internet of Things Journal,2021,8(1):357-369. [20]HU X Y.Key Generation Method Based on Wireless Endogenous Security [D].Zhengzhou:University of Information Engineering,2021. |
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