In this paper, a novel image encryption technique
based on chaotic maps is described. Encrypting an image with
chaotic maps ensures that the safe cipher characteristics of
confusion and diffusion are met. Moreover, chaos-based image
cryptosystems have many features compared to the classical
cryptographic techniques such as fast, effective security,
minimum computing overheads, extremely sensitive to the
control parameters and initial settings. These all features make
effective encryption techniques with the best performance. Four
chaotic maps are used in the proposed scheme to generate the
encryption key, initial vector, and ciphering encryption S-Boxes.
The maps used are the Chebyshev map, 1D improved quadratic
map, 1D Improved Logistic Map and Altered Sine-Logistic
based Tent map ASLT. |
