Two-component steganographic system based on the ratio of the linear functions of two signals with placing the informative signal in the denominar of the message embedding function

The use of a two-component container in steganographic systems allows significant expanding the capabilities of known steganographic methods. The article discusses the functions of forming components based on the division of linear functions of two signals with the placement of an informative signal in the denominator of the function of embedding information in empty container signal. The expressions for the formation of the components and the expression for restoring the hidden signal are presented by fractions and have break points, which requires an analysis and determination of the conditions for the formation of the container. The article presents the results of the analysis of a two-component steganographic system with a nonlinear container in the discontinuity region of the informative signal recovery function. The key coefficients in terms of ensuring the greatest sensitivity of the system to the error introduced in the value of the coefficient are determined. An analysis of the influence of the error in the value of the key coefficient on the masking of a message in the frequency spectrum is performed and obtained results are assessed.