A novel grayscale image encryption approach based on chaotic maps and image blocks
| Autor: | Vijay Kumar, Ashish Girdhar, Himani Kapur |
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| Rok vydání: | 2021 |
| Předmět: |
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Physics and Astronomy (miscellaneous) Pixel Computer science business.industry Substitution (logic) ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION General Engineering Chaotic General Physics and Astronomy Encryption 01 natural sciences Grayscale Image (mathematics) 010309 optics Permutation Computer Science::Computer Vision and Pattern Recognition Computer Science::Multimedia 0103 physical sciences 010306 general physics business Algorithm Computer Science::Cryptography and Security |
| Zdroj: | Applied Physics B. 127 |
| ISSN: | 1432-0649 0946-2171 |
| DOI: | 10.1007/s00340-021-07585-x |
| Popis: | Image encryption converts a meaningful image into some random arrangement of pixel intensities. That means, the intelligible property of an image is destroyed. Taking into consideration excessively large time and space complexity required by the image encryption algorithm using multiple chaotic systems, this paper proposes an image encryption method in which employs three chaotic sequence to achieve fairly high level of encryption. Novelty of the proposed approach lies in the designed algorithm to achieve both permutation and substitution processes of image encryption. In the end, a comparison in the coefficient correlation values is drawn to evaluate the performance of the proposed algorithm with respect to many lately proposed image encryption schemes. |
| Databáze: | OpenAIRE |
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