Secure steganographic communication algorithm based on self-organizing patterns

Abstract

A secure steganographic communication algorithm based on patterns evolving in a Beddington-de Angelis-type predator-prey model with self- and cross-diffusion is proposed in this paper. Small perturbations of initial states of the system around the state of equilibrium result in the evolution of self-organizing patterns. Small differences between initial perturbations result in slight differences also in the evolving patterns. It is shown that the generation of interpretable target patterns cannot be considered as a secure mean of communication because contours of the secret image can be retrieved from the cover image using statistical techniques if only it represents small perturbations of the initial states of the system. An alternative approach when the cover image represents the self-organizing pattern that has evolved from initial states perturbed using the dot-skeleton representation of the secret image can be considered as a safe visual communication technique protecting both the secret image and communicating parties.

FPGA implementation of hardware-oriented reaction-diffusion cellular automata models

“…The model had earlier been implemented in analog CMOS to repair fingerprint images, and has been confirmed suitable for hardware-based applications. A novel steganography method based on Reaction-diffusion had been earlier shown an efficient application using the reaction-diffusion phenomenon [17]. In RD steganography, the RD process is applied to improve data security after hiding a plain text within a random-dot image.…”

Image hiding in dynamic unstable self-organizing patterns

“…The nonlinear model of the system governs the evolution of one pattern from a predetermined set of initial conditions -while the evolution of the second one is started from the perturbed initial conditions [1][2][3][4][5]. The secret image leaks in a form of a difference image between these two patterns:…”

“…Image hiding scheme constructed based on spiral waves modeled patterns requires a slightly different approach than in [1][2][3][4][5]. Two images are still required, but as it is noted in [10], it is impossible to get a reasonable difference image of two patterns created using spiral wave model if only initial conditions are modified.…”

“…A secure steganographic communication algorithm is developed in [1][2][3][4][5] where patterns are evolved using reaction-diffusion equations, interactions between competing individuals, patterns produced by the atrial fibrillation model or by an array of non-diffusively coupled nonlinear maps. Listed digital image hiding schemes based on self-organizing patterns use some sort of perturbation of initial conditions.…”

Image Hiding Scheme Based on the Atrial Fibrillation Model

“…A digital fingerprint image is used as the initial condition for the evolution of a pattern in a model of reaction-diffusion cellular automata [1]. A secure digital image communication scheme based on patterns evolving in a Beddington-DeAngelis-type predator-prey model with self-and cross-diffusion is proposed in [2]. Considerations on hardware implementation of image steganography based on reaction diffusion models are presented in [3].…”