Research Article
Entropy-Based Block Scrambling Image Encryption Using DES Structure and Chaotic Systems
| | Lena | Cameraman | Fingerprint | All white |
| Original image | 7.4532 | 6.9046 | 7.5945 | 0 | Cipher image | 7.9976 | 7.9974 | 7.9977 | 7.9979 | Ref. [35] | 7.9971 | 7.9971 | 7.9970 | 7.9970 | Ref. [36] | 7.9965 | 7.9964 | 7.9962 | — | Ref. [37] | 7.9968 | 7.9904 | — | — |
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