Decryption of pure-position permutation algorithms.

Xiao-Yu Zhao; Gang Chen; Dan Zhang; Xiao-Hong Wang; Guang-Chang Dong

doi:10.1631/jzus.2004.0803

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Decryption of pure-position permutation algorithms.

Xiao-Yu Zhao·Gang Chen·Dan Zhang·Xiao-Hong Wang·Guang-Chang Dong

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Abstract

Pure position permutation image encryption algorithms, commonly used as image encryption investigated in this work are unfortunately frail under known-text attack. In view of the weakness of pure position permutation algorithm, we put forward an effective decryption algorithm for all pure-position permutation algorithms. First, a summary of the pure position permutation image encryption algorithms is given by introducing the concept of ergodic matrices. Then, by using probability theory and algebraic principles, the decryption probability of pure-position permutation algorithms is verified theoretically; and then, by defining the operation system of fuzzy ergodic matrices, we improve a specific decryption algorithm. Finally, some simulation results are shown.

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Algorithms Computer Graphics Computer Security Image Interpretation, Computer-Assisted Information Storage and Retrieval Pattern Recognition, Automated Reproducibility of Results Sensitivity and Specificity Signal Processing, Computer-Assisted Comparative Study Evaluation Study Journal Article Research Support, Non-U.S. Gov't Validation Study

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Xiao-Yu Zhao, Gang Chen, Dan Zhang, Xiao-Hong Wang, Guang-Chang Dong. 2004. Decryption of pure-position permutation algorithms.. https://doi.org/10.1631/jzus.2004.0803

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