Concealing Existence of Secret Message Through a Novel and Secure Image Steganography Algorithm Appertaining to Arithmetic Subtraction.

Abstract

Currently, information represents one of the most crucial instruments, and it must properly address the rising information security threat. Additionally, when data is delivered, it is tracked and modified remotely through the internet. As a result, cryptography or even steganography are two main methods for enhancing security during transmission. In cryptography, data is encoded to cipher texts using a non-public key, but regardless of how effective the encryption is, the message's corporeality is apparent to others. Contrarily, steganography keeps many secret information hidden through a common-secret file to thwart visual inspection. In this study offered a fresh data-concealing method based on LSB image steganography, in which only the reader picture pixels are used to hide sensitive information. An LSB steganography-secured word is used together with image pixel intensities to filter the whole picture and identify the seeker pixel in order to do this. To increase security, secret data is embedded using the subtracting method, as well as the hidden message is then encrypted, and using the AES encryption before applying steganography. In order to control the generated stego image quality, MSE as well as PSNR measurements are scaled in the experiment. The stego image has an increased PSNR but a smaller MSE value when compared to other evaluated styles, highlighting the rigidity of the proposed approach.