摘要最终完成了一个完整的系统。在最后对于系统的整体情况进行了一个分析和总结，体现现今正处于信息时代，而随着互联网的快速发展，互联网的信息安全也成为了人们不得不关注的一个问题。网络隐蔽信道技术因为其隐蔽性和对网络信息安全的巨大影响，已经成为信息安全领域一个重要的研究方向，对于网络隐蔽信道的相关研究有其现实性和必要性。82697

该文从介绍隐蔽信道的基本概念以及隐蔽信道的通信模型开始，之后说明了隐蔽信道的分类和其中的几种隐蔽信道及其优缺点。接下来与IPCTC相比对，文中介绍了基于TRCTC的网络隐蔽信道的相关算法并说明其改进，同时针对相关算法，在LINUX平台架构上对其进行了具体的设计和实现，了该系统的功能和优点所在，对其前景进行展望，为相关的研究提供有益的实例参考。

毕业论文关键词  隐蔽信道  网络隐蔽信道  TRCTC

毕业设计说明书外文摘要

Title    Design and implementation of TRCTC-based network covert channel                                                 

Abstract We are living in the information era，and with the rapid development of Internet, Internet information security has become a problem that people have to pay attention to。 Network-based covert channel has become an important research direction in the field of information security because of its hidden nature and the huge impact on network information security,so the research on the network covert channel has its reality and necessity。

The paper introduces firstly the basic concept and the communication model of covert channel,secondly explains the classification of covert channels and several covert channels with their advantages and disadvantages。Then compared with IPCTC,it introduces the relative algorithm of network covert channel based on TRCTC and explains its improvement，and based on the relative algorithm, the specific design and implementation are carried out on LINUX platform。Finally,a complete system is completed。The paper end up with the analysis and summary to the overall situation of the system,it reflects the function and benefits of the system, prospects for its future and provides the beneficial reference for related research。

Keywords   covert channel   network-based covert channel   TRCTC

目   次

1  绪论 1

1。1  研究的背景意义 1

1。2  网络隐蔽信道的简单介绍 2

1。3  网络隐蔽信道研究现状 2

1。4  论文组织结构 3

2  网络隐蔽信道的通信模型以及分类 4

2。1  网络隐蔽信道的通信模型 4

2。2  网络隐蔽信道的分类 5

2。3  本章小结 6

3  基于TRCTC的网络隐蔽信道的总体设计 7

3。1  IPCTC 7

3。2  TRCTC 8

3。3  TRCTC的算法实现 8

3。3。1  通信双方的约定和准备 8

3。3。2  隐蔽数据的发送 9

3。3。3  隐蔽数据的接收