Research Article
Image Encryption Scheme Based on Block Scrambling, Closed-Loop Diffusion, and DNA Molecular Mutation
Table 8
Global and local Shannon entropies.
| | Image | Plaintext image entropy (bit) | Global Shannon entropy (bit) | Local Shannon entropy (bit) | Local entropy critical values (bit) | | | | | | |
| | Couple | 7.3021 | 7.9986 | 7.9025 | Pass | Pass | Pass | | Camera | 7.0097 | 7.9990 | 7.9026 | Pass | Pass | Pass | | Peppers | 7.5327 | 7.9983 | 7.9023 | Pass | Pass | Pass |
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