声波隐蔽通信系统设计及应用
发布时间：2019-04-10 11:06
【摘要】：随着社会的进步以及科技的发展,笔记本电脑、智能终端等移动设备越来越普及,人们对于信息安全防护也越来越重视;传统的观念认为,网络连接是计算机等设备受到攻击的必要条件,当其断开网络连接时,其数据信息就是相对安全的,但是信息安全防护是一个博弈过程,会不断地遇到新的挑战,比如通过高频声波建立的隐蔽通信就是一种非常规的安全攻击手段,其可以在物理隔离的设备之间进行数据信息的隐蔽传输,而不被设备使用者发觉。本文主要研究一种以高频声波为媒介的隐蔽通信技术,该技术既可以在信息安全领域中应用,也可以作为设备间进行近距离通信的一种方法,研究重点是设计并实现在较低信噪比下通过高频声波在设备间进行通信的方案,及其在实际场景中的应用,主要工作如下:(1)通过对高频声波在空气中的传输特性、普通计算机内置的音频输入输出设备的频响特性以及人耳的听力特性进行调研,为通信方案的设计进行必要的准备;(2)研究并选择了声波通信系统的结构,设计出单向点对点通信方案并分别通过Matlab和MFC进行了实现,给出了方案的性能数据;(3)针对点对点通信方案存在的局限,给出了两种改进方案——双向通信方案和变带宽通信方案,并给出了相应的实现或仿真实现;(4)讨论了声波通信的应用场景,并实现了在笔记本间键盘记录传输的应用和在Android手机之间信息传输的应用。通过本文中对声波通信方案设计及其实现,可知,在物理隔离的设备之间完全可以通过声波进行设备间通信。同时,由于人耳对高频声波的不敏感特性,如采用高频声波进行设备间通信,可以达到隐蔽信息传输的效果,尤其适合在近距离会面等场景下的应用;另外,由于在移动设备间进行声波通信,操作简单且不需要额外硬件的支持,使得声波通信也完全有机会成为近距离通信方案的一种并得到广泛的推广和应用。
[Abstract]:With the progress of society and the development of science and technology, notebook computers, intelligent terminals and other mobile devices are becoming more and more popular, and people pay more and more attention to the protection of information security. The traditional concept holds that the network connection is the necessary condition for the computer and other devices to be attacked. When it disconnects from the network connection, its data and information are relatively secure, but the protection of information security is a game process. New challenges will be encountered, such as covert communication through high frequency acoustic waves, which is an unconventional security attack that can transmit data between physically isolated devices without being detected by device users. This paper mainly studies a kind of covert communication technology based on high frequency acoustic wave. This technology can be applied in the field of information security, and can also be used as a method of close-range communication between devices. The emphasis of the research is to design and realize the scheme of communication between equipments through high frequency acoustic wave at lower signal-to-noise ratio, and its application in actual scene. The main work is as follows: (1) through the transmission characteristics of high-frequency acoustic wave in air, the main work is as follows. The frequency response characteristics and hearing characteristics of the audio input and output devices built in the ordinary computer are investigated in order to prepare for the design of the communication scheme. (2) the structure of acoustic communication system is studied and selected, and the one-way point-to-point communication scheme is designed and implemented by Matlab and MFC respectively, and the performance data of the scheme is given. (3) in view of the limitation of the point communication scheme, two improved schemes-two-way communication scheme and variable bandwidth communication scheme are given, and the corresponding implementation or simulation implementation is given. (4) the application scenario of acoustic communication is discussed, and the application of keyboard recording transmission between notebooks and information transmission between Android mobile phones is realized. Through the design and implementation of acoustic communication scheme in this paper, it can be seen that the communication between the physically isolated devices can be carried out by acoustic wave. At the same time, because the human ear is insensitive to the high frequency acoustic wave, such as using high frequency acoustic wave to communicate between devices, it can achieve the effect of covert information transmission, especially suitable for the application in close-range meeting and other scenarios. In addition, due to the simple operation and no additional hardware support for acoustic communication between mobile devices, acoustic communication has a full chance of becoming a short-range communication scheme and has been widely popularized and applied.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN914
本文编号：2455746
[Abstract]:With the progress of society and the development of science and technology, notebook computers, intelligent terminals and other mobile devices are becoming more and more popular, and people pay more and more attention to the protection of information security. The traditional concept holds that the network connection is the necessary condition for the computer and other devices to be attacked. When it disconnects from the network connection, its data and information are relatively secure, but the protection of information security is a game process. New challenges will be encountered, such as covert communication through high frequency acoustic waves, which is an unconventional security attack that can transmit data between physically isolated devices without being detected by device users. This paper mainly studies a kind of covert communication technology based on high frequency acoustic wave. This technology can be applied in the field of information security, and can also be used as a method of close-range communication between devices. The emphasis of the research is to design and realize the scheme of communication between equipments through high frequency acoustic wave at lower signal-to-noise ratio, and its application in actual scene. The main work is as follows: (1) through the transmission characteristics of high-frequency acoustic wave in air, the main work is as follows. The frequency response characteristics and hearing characteristics of the audio input and output devices built in the ordinary computer are investigated in order to prepare for the design of the communication scheme. (2) the structure of acoustic communication system is studied and selected, and the one-way point-to-point communication scheme is designed and implemented by Matlab and MFC respectively, and the performance data of the scheme is given. (3) in view of the limitation of the point communication scheme, two improved schemes-two-way communication scheme and variable bandwidth communication scheme are given, and the corresponding implementation or simulation implementation is given. (4) the application scenario of acoustic communication is discussed, and the application of keyboard recording transmission between notebooks and information transmission between Android mobile phones is realized. Through the design and implementation of acoustic communication scheme in this paper, it can be seen that the communication between the physically isolated devices can be carried out by acoustic wave. At the same time, because the human ear is insensitive to the high frequency acoustic wave, such as using high frequency acoustic wave to communicate between devices, it can achieve the effect of covert information transmission, especially suitable for the application in close-range meeting and other scenarios. In addition, due to the simple operation and no additional hardware support for acoustic communication between mobile devices, acoustic communication has a full chance of becoming a short-range communication scheme and has been widely popularized and applied.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN914
【参考文献】
相关期刊论文 前5条
1 王世伟;;论信息安全、网络安全、网络空间安全[J];中国图书馆学报;2015年02期
2 兰丽;单志龙;;Ad Hoc网络中隐藏终端和暴露终端相关问题研究[J];计算机与数字工程;2010年07期
3 刘志敏;徐凤英;;移动Ad hoc网络隐藏和暴露终端问题的研究[J];科技信息;2010年06期
4 许肖梅;;水声通信与水声网络的发展与应用[J];声学技术;2009年06期
5 沈昌祥;张焕国;冯登国;曹珍富;黄继武;;信息安全综述[J];中国科学(E辑:信息科学);2007年02期
相关博士学位论文 前1条
1 王明华;高速水声通信中OFDM的关键技术与应用研究[D];哈尔滨工程大学;2007年
相关硕士学位论文 前7条
1 乔宇彬;高频声波隐蔽通信系统的设计与实现[D];北京交通大学;2016年
2 周宇;一种高效声波通讯协议的研究与实现[D];浙江大学;2015年
3 高绍斌;基于声波的近距离无线通信系统研究与设计[D];太原理工大学;2014年
4 尹维汉;无线传感器网络的声通信技术研究[D];中北大学;2013年
5 曲蓓莉;基于人耳掩蔽效应的谱减算法的研究与实现[D];南京理工大学;2012年
6 陈达伟;一种水声通信网络协议的跨层设计与实现[D];厦门大学;2009年
7 郭华伟;OFDM技术在水声通信中的应用研究[D];厦门大学;2002年
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