Research Article
An Image Encryption Scheme Based on Lorenz Hyperchaotic System and RSA Algorithm
Table 8
The information entropy and local entropy of some images.
| | Image | Plain image | Cipher image | Local Shannon |
| | Lena | 7.2719 | 7.9993 | 7.95806 | | Baboon | 7.6444 | 7.9994 | 7.95425 | | Peppers | 7.2978 | 7.9993 | 7.95268 | | Male | 7.5237 | 7.9998 | 7.95709 | | Lake | 7.3896 | 7.9993 | 7.95632 | | Boat | 7.1914 | 7.9993 | 7.95559 | | Tree | 7.1816 | 7.9975 | 7.95245 | | Clock | 6.7057 | 7.9976 | 7.95367 |
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