Table 3:
Results of encryption of different amount for color GREEN ROSE.JPG and GOLDRUSH.JPG images using different keys.
Image
Key size
Amount %
One key
Two keys
Three keys
Cipher-image correlation
Reconstructed-image correlation
Cipher-image correlation
Reconstructed-image correlation
Cipher-image correlation
Reconstructed-image correlation
3
Small
L1 = 25
0.06636301
0.99999996
0.04991651
0.99999897
0.04777646
0.99999897
L2 = 6.25
0.13200788
0.99999998
0.08473995
0.99999967
0.07023566
0.99999967
3
Large
L1 = 25
0.02938994
0.99999996
0.00519053
0.99999897
0.00418059
0.99999897
L2 = 6.25
0.03215505
0.99999998
0.02981104
0.99999967
0.01996734
0.99999967
4
Small
L1 = 25
0.03293707
0.99999995
0.02655446
0.99999833
0.00998768
0.99999833
L2 = 6.25
0.06094592
0.99999998
0.03180833
0.99999470
0.01329204
0.99999947
4
Large
L1 = 25
0.00525827
0.99999995
0.00494368
0.99999833
0.00218012
0.99999833
L2 = 6.25
0.02447215
0.99999998
0.01329412
0.99999470
0.00979585
0.99999470