Research Article
Cryptanalysis and Improvement of Chaos-Based Image Encryption Scheme with Circular Inter-Intra-Pixels Bit-Level Permutation
| Scheme | Image size | | | | |
| Ref. [21] | 0.1895 | 0.3414 | 1.5026 | 9.3228 | Ref. [22] | 0.3125 | 0.5029 | 2.2335 | 11.7568 | Ref. [23] | 0.1605 | 0.2921 | 1.3528 | 8.2878 | Original | 0.2379 | 0.4261 | 2.0396 | 11.1652 | Improved | 0.1811 | 0.3384 | 1.4918 | 9.2796 |
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