Designing a Novel Technique for Multi-Level Security System for Digital Data by Combined DSSS Audio Steganography & Random Permutation Cryptography

Abstract

Cryptography and steganography are utilized to transfer confidential digital data without being hacked by the hacker. These have evolved to a considerable extent from early to current. The data sent to different places are susceptible to numerous attacks. Consequently, it may be said that the protection of information is one of the maximum exciting communication factors at the current time. “Considerable research has already been conducted to maintain the recovered watermark's perceptual and visual quality, but this has only been accomplished through a single step of security. A single security step allows an intruder to hack into confidential data. This research aims to improve the perceptual and visual quality of the recovered watermark even after it has gone through multiple stages of security. Here, a hybrid method using Random Scrambling for image encryption, Direct Sequence Spread Spectrum (DSSS) for audio steganography, and Random Permutation for Audio cryptography have been used to provide 3- Level security to a grayscale image. The perceptual and visual quality of the recovered watermark from the proposed hybrid and the existing DSSS methods has also been compared to demonstrate its effectiveness.” Peak Signal to Noise Ratio (PSNR), Mean Square Error (MSE) & Normalized Cross-Correlation (NCC), Structure Similarity Index Measure (SSIM), and Goodness of Fit This research aims to improve the perceptual and visual quality of the recovered watermark even after it has gone through multiple stages of security. have been calculated as performance evaluation parameters for the proposed and existing method.