Research Article
FPGA Implementation of Improved Security Approach for Medical Image Encryption and Decryption
Table 11
Results of entropy and NC for white and black images.
| | Image | Entropy | NC | | Red | Blue | Green |
| | All black | 0 | — | — | — | | All black ciphered | 7.99977 | −0.0027 | −0.0036 | 0.0015 | | All white | 0 | — | — | — | | All white ciphered | 7.99977 | 0.0065 | −0.00145 | 0.00015 |
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