Two-Level Security of Color Image Using 9D-Hyperchaotic System and DWT

This research paper proposes a novel technique to secure the color image using a 9D-hyperchaotic system and Discrete Wavelet Transform (DWT). The proposed scheme uses a 9D-hyperchaotic system for encrypting the color image and DWT is used for embedding this encrypted image into another color image. For extracting secret image, the reverse process of the scheme is used. Different types of security analysis tests such as key sensitivity, entropy, and histogram analysis are performed to check the robustness of the image being embedded. Experimental results show that that proposed scheme can face many attacks like brute-force attack, cropping attack, etc. Experimental results prove that the proposed technique is much more robust and efficient to secure digital images.