New S-Box Generation Based on Hybrid Two-Dimensional Chaotic Map for Color Image Encryption.

The security of digital images is increasingly important as the Internet is a growing concern due to the ease with which images can be shared via the Internet. These images need to be protected, and cryptography is the way to achieve this--chaos-based encryption, to be more specific. This work describes a technique of image encryption for colour images using a logistic map with a two-dimensional S-Box and the Hénon 2D map for encryption. The given method S-Box is cleared by several important parameters of evaluation of S-Box and is estimated by such indicators as resistance to the differential attacks, histograms, correlations, and entropy. The results show good efficiency, which can be seen in figures of UACI being equal to 34. 5847%, NPCR at 98. 87%, and entropy at 7. 9994 of the Lena images, 9985 of the Lena images. [ABSTRACT FROM AUTHOR]