Image Encryption and Steganography Method Based on AES Algorithm and Secret Sharing Algorithm
Mustafa Muslih Shwaysh, Sameer Alani, Mohammed Ayad Saad, Tabarak Ali Abdulhussein · Ingénierie des systèmes d information · 2024
The development that occurred in information technology and the need to transfer knowledge made sensitive information protection very necessary.The key exchange method is an important method between two sides, the sender side, and the receiver side, especially with the use of the symmetric algorithm, the key exchange method achieves two important principles secrecy and authentication.This article presents a new method for the protection of a secret grayscale image.The proposed work is composed of four phases.The initial phase is the key generation.Then the encryption process will be implemented by using the proposed AES encryption algorithm with multiple S-boxes determined by the number of rounds of the algorithm.The third phase applies secret sharing using the Shamir secret sharing scheme (SSSS).The SSSS will split the encryption key of the encryption algorithm that was generated randomly in the previous phase into several shares that will be distributed over multiple locations.The final phase is steganography, which will embed the secret image into an appropriate cover image using the Least Significant Bit (LSB).The obtained results prove that the secret image is completely restored without any change.The reconstruction of the stego image of quality test results was very good with PSNR 46.165 and MSE 1.58.