Security testing of a modular cryptosystem based on continuous cellular automata

This paper presents specially designed tests performed in a cryptosystem based on chaotic continuous cellular automata (CCA). The degree of the cryptosystem security is evaluated by taking two approaches: (i) stationarity and (ii) spectral fractal dimension. These tools are verified with known signals before applying them to test the cryptosystem. This paper provides groundbreaking research about a robust method to determine the minimum stationary window in a given time series. This new ideas is relevant because the stationarity of a signal can be rapidly determined. This idea has never been done in the past, at least in the reported literature, outside this research group.