Research Article
Image Encryption Using the Chaotic Josephus Matrix
Table 1
Adjacent pixel autocorrelation analysis.
| Correlation coefficients (10−3) | Horizontal | Vertical | Diagonal |
| Plaintext | Lena | 939.9652 | 970.9000 | 970.9894 |
| Ciphertext | CJPM | −2.2281 | −0.3709 | 3.265 | [6] | 2.0970 | 16.1870 | 17.805 | [8] | −2.5000 | −1.0000 | −9.3000 | [5] | 5.7765 | 28.434 | 20.662 | [29] | −12.7212 | −60.2579 | 62.4427 | [9] | −13.4000 | 1.2000 | 39.8000 | [30] | −15.8900 | −65.3800 | −32.3100 | [16] | 81.5860 | −40.0530 | −4.7150 | [10] | 125.7000 | 58.1000 | 50.4000 |
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