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In this paper, a stream color image cryptography has been proposed based on spatiotemporal chaos system. One-way coupled map lattices (OCML) are used to generate pseudorandom sequences and then encrypt image pixels one by one. By iterating randomly chosen chaotic maps from a set of chaotic maps for certain times, the generated pseudorandom sequences obtain high initial-value sensitivity and good randomness...
In this paper, an improved colour image encryption is proposed, which is based on a chaotic logistic map and the one-way coupled-map lattices (OCML) model. The results of several experimental, statistical analyses and key sensitivity tests prove the security robustness of the proposed cryptosystem.
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