Gibbs Construction in Steganography

A Note on the Construction of Nonsingular Gibbs Measures

Gibbs versus non-Gibbs distributions in money dynamics

We review a simple model of closed economy, where the economic agents make money transactions and a saving criterion is present. We observe the Gibbs distribution for zero saving propensity, and non-Gibbs distributions otherwise. While the exact solution in the case of zero saving propensity is already known to be given by the Gibbs distribution, here we provide the explicit analytical form of ...

Steganography in VLC Systems

One of the areas in which wireless networks based on visible light communication (VLC) is considered superior to traditional radio-based communication is security. The common slogan summarizing VLC security features is WYSIWYS "What You See Is What You Send”. However, especially in the case of infrastructure downlink communication, security must be accounted for also in case of VLC. In this pap...

Sum Covers in Steganography

We extend the study of steganography schemes with pooling to the case when two changes per cell are allowed. We show that such schemes are equivalent to a new, symmetric version of sum covers known in combinatorial design theory. We give a construction that is better in the information versus distortion metric than the schemes with one change per cell. A number of interesting questions concerni...

Development Trends in Steganography

Steganography is a general term referring to all methods for the embedding of additional secret content into some form of carrier, with the aim of concealment of the introduced alterations. The choice of the carrier is nearly unlimited, it may be an ancient piece of parchment, as well as a network protocol header. Inspired by biological phenomena, adopted by man in the ancient times, it has bee...