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How to design a fast and efficient method for message digest is always a hotspot in modern cryptographic researches. A message digest method based on chaotic map for medical images is proposed in this paper. At the beginning of this approach, an original message is grouped to generate an initial vector. And then the entire binary bits of the message are utilized for the chaotic map function which...
In this paper, an image encryption algorithm based on improved 3D cat map is proposed. The new algorithm employs Henon map chaotic sequence to generate control parameters of shuffling and uses improved 2D Logistic map sequence to substitute grey values. It cannot only effectively encrypt images, but also can resist cipher analyzers' attack by periodicity of cat map. Experimental results and security...
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