Research Article
A New Multistage Encryption Scheme Using Linear Feedback Register and Chaos-Based Quantum Map
Table 1
Entropy measures for different images.
| | Image | Original image | Enciphered image | | Color | R | G | B | Color | R | G | B |
| | Baboon | 7.7624 | 7.7067 | 7.4744 | 7.7522 | 7.9996 | 7.9992 | 7.9995 | 7.9991 | | Peppers | 7.6698 | 7.3388 | 7.4963 | 7.0583 | 7.9998 | 7.9991 | 7.9983 | 7.9994 | | House | 7.0686 | 6.4311 | 6.5389 | 6.2320 | 7.9986 | 7.9972 | 7.9986 | 7.9983 | | Brain | 7.0156 | 7.0156 | 7.0156 | 7.0156 | 7.9991 | 7.9986 | 7.9989 | 7.9989 | | X-ray | 7.2369 | 7.2369 | 7.2369 | 7.2369 | 7.9993 | 7.9993 | 7.9989 | 7.9996 | | Lena | 7.7562 | 7.5889 | 7.1060 | 6.8147 | 7.9995 | 7.9990 | 7.9992 | 7.9993 |
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