Random coding bound of information hiding E-capacity

The model of information hiding system, introduced and studied by P. Moulin and J. A. O´Sullivan et al., (2003) is explored. The information hiding E-capacity is investigated, which expresses the dependence of the information hiding rate from reliability and distortions levels for the information hider and the attacker. A random coding bound for information hiding E-capacity is found, the limit of which, when E→0, coincides with the information hiding capacity stated by P. Moulin and J. A. O´Sullivan.