Research Article
A New Chaos-Based Color Image Encryption Scheme with an Efficient Substitution Keystream Generation Strategy
Table 4
Information entropies of the test images and their output cipher-images.
| | Test image name | Information entropy | | Plain-image | Cipher-image |
| | Baboon | 7.762436 | 7.999778 | | House | 7.485787 | 7.999747 | | Lena | 7.750197 | 7.999772 | | Peppers | 7.669826 | 7.999788 | | Portofino | 7.306934 | 7.999766 |
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