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文中首先阐述了基于TCP/IP协议的信息隐藏原理,并利用ICMP协议信息隐藏的实现方法与修改TCP连接中IP首部的源地址的方法相似性,提出一种利用ICMP进行数据隐藏的方法。即源主机向目的主机发送隐藏数据时可以对IP协议头和TCP协议头双重修改,并利用ICMP的IP欺骗隐藏自身的IP地址,以达到信息容量最大和安全性相对较高的效果。实验结果实现了信息隐藏,验证了该方法的正确性,对实际工程中的数据隐藏有一定的参考价值。
Firstly, the paper describes the principle of information hiding based on TCP / IP protocol and uses the method of information hiding between ICMP protocol and the method of modifying the source address of IP header in TCP connection. A method of data hiding by using ICMP is proposed. That is, the source host can double modify the IP protocol header and the TCP protocol header when sending the hidden data to the destination host, and use ICMP IP spoofing to hide its own IP address so as to achieve the effect of maximizing the information capacity and relatively high security. The experimental result realizes the information hiding, validates the correctness of the method, and has certain reference value to the data hiding in the actual project.