Table 12 Key space, entropy, and correlation comparison.
| Â | Key space | Entropy | Correlations | ||
|---|---|---|---|---|---|
H | V | D | |||
Proposed | \(\:{2}^{1994}\) | 7.9999 | −0.00001 | −0.00050 | 0.00039 |
Ref. [33] | \(\:{2}^{332}\) | 7.9994 | 0.00179 | −0.01642 | −0.00551 |
Ref. [34] | \(\:{2}^{624}\) | 7.9994 | 0.0021 | 0.0029 | 0.0023 |
Ref. [35] | \(\:{2}^{390}\) | 7.9995 | −0.0029 | −0.0049 | −0.0021 |
Ref. [36] | \(\:{2}^{512}\) | 7.9994 | 0.0015 | 0.0011 | 0.0015 |
Ref. [37] | \(\:{2}^{186}\) | 7.9993 | − 0.01469 | 0.00231 | 0.00153 |
Ref. [38] | \(\:{2}^{149}\) | ــــ | −0.0019 | − 0.0018 | − 0.0121 |
Ref. [23] | \(\:{2}^{442}\) | 7.9997 | −0.0007 | 0.0002 | 0.0010 |
Ref. [39] | \(\:{2}^{10524}\) | 7.9991 | −0.00392 | −0.00247 | −0.0066 |
Ref. [40] | \(\:{2}^{512}\) | 7.9994 | 0.0058 | 0.0062 | 0.0024 |
