# SAS

## Seminar

### Limit capacity of non-stochastic steganographic systems and Hausdorff dimension

Ryabko, D (INRIA, Lille, France)
Thursday 05 July 2012, 17:00-17:30

Seminar Room 1, Newton Institute

#### Abstract

It was shown recently that the limit capacity of perfect steganography systems for i.i.d. and Markov sources equals the Shannon entropy of the cover'' process. Here we address the problem of limit capacity of general perfect steganographic systems. We show that this value asymptotically equals the Hausdorff dimension of the set of possible cover messages.

#### Video

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