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Metric measures for Mona Lisa (gray).
| Evaluation Metrics | ECC with Hill Cipher | ECC with AES | ElGamal with Double Playfair Cipher |
|---|---|---|---|
| Encryption Time (seconds) | 0.44584 | 2.84150 | 0.24519 |
| Decryption Time (seconds) | 0.35107 | 2.7866 | 0.20224 |
| Entropy | 7.99442 | 7.99671 | 7.92129 |
| Mean Squared Error (MSE) in decrypted image |
0.0000 | 0.0000 | 0.0000 |
| PSNR (dB) | 8.5959 | 8.62078 | 9.12066 |
| NPCR (%) | 97.41669 | 99.58191 | 94.13757 |
| UACI (%) | 30.26131 | 30.37332 | 27.97823 |
