【作者】 颉晨；

【导师】 邱扬；

【作者基本信息】 西安电子科技大学 ， 测试计量技术与仪器， 2007， 硕士

【摘要】 随着科学技术的发展,计算机网络已经广泛应用于政治、军事、金融和商业领域的各个部门,其给人类带来巨大的便捷和实惠,同时其安全性也日益突出,随着病毒武器的出现,对辐射病毒攻防的研究成为信息安全的重中之重。本文针对计算机网络的信息安全问题,提出了病毒辐射攻防的模型及信号处理流程,在此基础上提出了病毒辐射攻击的有线传播辩识技术及安全防护半径。文章开始先给出了辐射病毒注入方式及在网络中传播的数学模型,从而证明了实施病毒辐射攻击的可行性。在分析了当前计算机网络的信号处理流程后,本文建立了病毒辐射攻击的方案,然后对计算机网络通信协议进行了分析,建立了计算机辐射攻击病毒库。基于前面的病毒辐射攻击方案,在第四章本文根据电磁场理论,通过场线耦合的方式,建立了病毒信息的耦合模型,最后通过对计算机网络门限电压的分析以及电台辐射发射场的分析,结合线上的耦合门限电压,得到了辐射注入功率。本文第五章详细介绍了计算机网络抗病毒辐射的按安全防护半径及病毒信息的有线及辨识技术。针对注入的病毒信息空间辐射场,得到了网络安全防护半径,同时通过概率统计的方法,得到了病毒信息的有线辨识方法。更多还原

【Abstract】 With the development of the science technology, the computer network has been applied to many fields, such as public apartment, military apartment, commercial apartment and so on. At the same time, the security of computer network is more important. With the virus weapon appearing, the study for the techniques of attack and anti-attack of signal radiated from a computer network is significant to information security.Aiming at the problem of information safety of the computer network, this paper give a model to attack and anti-attack of virus and signal of processing flow. Base on this, the spread of virus and radius of defence are given.At the beginning, this paper points out the technology of radiant virus’injection and mathematical mode. In the following, this paper analyses the computer network’s communication protocol. We finally analyze the programme of computer virus in the frequency domains and some common files and get dome useful conclusion.Based on the theory of field-line coupling, in the four sections, we design the model of the field-line coupling , at last we analyze the critical voltage of the computer network and the radiation field of the broadcastion station. Finally we get the power which is used to realize the technology of virus countermine. Moreover, supposing the carrier were broadcasting stations, the threshold voltage of virus infection into a network was studied.The technology the safe radius for a network and identifying is discussed in chapter fifth. After analyzing field-line coupling and the wired propagation of virus coupling signal was determined ,based on the model of conductor transmissing, the rule of determining the safe radius for a network was brought forward. Then we get the identify method of virus information through probabilistic method .更多还原