网络隐蔽时间信道的研究

以Internet中所存在的隐蔽信道为研究对象,围绕着其上的信息传递方式展开研究.首先,在网络隐蔽时间信道的信息传递框架的基础上,从安全角度阐明了其存在的可能性、必然性和不可消除性;又从信息论的角度并结合迭代算法分析了其信道容量并实现了相关算法.然后,研究了隐蔽时间信道的发送、接收方法和一种二进制隐蔽时间信道的自适应特性,在此基础上设计了一个利用二进制隐蔽时间信道进行通信的系统,并实验和分析此系统的安全性的优点.

Network Covert Timing Channel

The thesis takes Network Covert Timing Channel as its object,and mainly discusses the communication process on it.Firstly,it demonstrates the possibility necessity and noneras ability of a network covert timing channel capacity is analyzed and the related algorithm is implemented, from both the information theorem and the security point.Secondly,the sending and receiving methods,as well as the self-adaptation of a binary channel is studied.Based on this,a communication system is analyzed and designed , test and analysis of this system security.