基于中继器的无线侧信道分析方法

Wireless Side-channel Analysis Method Based on Repeater

随着物联网时代的来临,通信设备的安全变得越来越重要.2018年出现的无线侧信道分析技术揭露了无线电安全中存在的漏洞,对物联网安全构成了很大的威胁.然而,无线侧信道分析方法极易受到噪声的干扰.在有噪声环境下,采集到的无线侧信道信号波形往往会出现畸变,导致后续分析失败.为了改善信号波形、提高无线侧信道的分析效率,本文提出了一种基于中继器的无线侧信道分析方法,以提高在高噪声环境下的分析成功率.本文建立信号传播模型,在高噪声环境下进行实验,验证了中继器对于无线侧信道信息信噪比的提升效果.采集得到的数据表明,借助新的分析方法,在同等情况下,可以将原始无线侧信道泄露信号的信噪比提升14倍,分析效率的提升高达81.15%.实验结果表明,基于中继器的无线侧信道分析方法显著地提高了分析成功率,明显优于原始的无线侧信道分析方法.

Along with the advent of the IoT(Internet of Things)era,the security of communication devices becomes more and more important.The wireless side-channel analysis,emerging in 2018,exposes the loopholes in radio security,posing a great threat to the security of IoT.However,the wireless channel analysis method is vulnerable to noise interference.In a noisy environment,the collected signals often have distortion,which makes the security analysis difficult or incorrect.In order to improve the quality of signal waveform and the efficiency of wireless side-channel analysis,this paper proposes a wireless side-channel analysis method based on repeater,and carries out experiments in noisy environment.A signal propagation model is built,which is used to carry out the experiment in a noisy environment.Experimental results show that,the repeater can improve the signal-to-noise ratio(SNR)of wireless side-channel signal.The data collected shows that with the help of the new method,the SNR of the original wireless side channel leaked signal can be increased by 14 times under the same conditions,and the decryption efficiency can be improved by 81.15\%.Experiments also show that the wireless side-channel analysis method based on repeater greatly increases the analysis success rate and is better than the original method.