A New Network Steganographic Method Based on the Transverse Multi-Protocol Collaboration.

. In recent years, network steganography has become a new research direction in the field of information hiding. In this paper, a new network steganographic method called Transverse Multi-Protocol Collaboration Network Steganographic Method (TMPCNSM) is proposed. TMPCNSM is realized in the same layer in the TCP/IP protocol stack. Two kinds of collaboration modes to encode the secret information by multi-protocol permutation are proposed and experiments are conducted with three protocols (HTTP, FTP, and DNS) as the carriers. The experimental results showed that the great advantage of this method over others are higher steganography bandwidth and more undetectable characteristics due to the complexity of multi-protocol collaborative.