Information Hiding Capacity in Unknown Channel
Kefei Chen · Jisuanji fangzhen · 2006
With the development of computer technology and network, the need for copyright protection and authentication is increasing day by day, and the information hiding technique is becoming more and more important. If we consider information hiding as communication process, neither the information sender nor the receiver is able to know all the characteristics of this communication channel due to the existence of channel error and malicious attacks. This has made the assumption of information hiding capacity more difficult and has delayed the development of information hiding. In the paper, a mathematical model for the calculation of information hiding capacity is proposed in the presence of channel error and malicious attacks. This model can avoid the effect of general attacks and errors soundly and provide a theoretic basis for information hiding. The lower and upper bound of the information hiding capacity are analyzed, and simulation results have proved this method is quite practical.