Picture Scrambling Algorithm Based on Logistic Mapping and Sort Transformation
Ming Li · Computer Technology and Development · 2007
Proposed a new algorithm of images scrambling based on the chaotic mapping and sort transformation.Chaotic sequences have several good properties including the ease of their generation,their sensitive dependence on initial condition and noise like.The new algorithm utilizes the sensitivity of the original state and the uniqueness of the chaos mapping,obtains the address codes of the images transposition by the sort transformation of the chaotic sequence.Due to the strong irregularity of sort transformation,the new chaotic images scrambling algorithm possesses high level security.Also analyzes the scrambling performance of the new algorithm in a statistical way.The results of the analysis indicate that the algorithm bears nice scrambling capability.