Performance Analysis of Steganography for Hiding Miscellaneous Data Using Daubechies Wavelet

摘要

Securing the private data from getting misused by the eavesdropper during the exchange of data between two or more parties has become a major concern, as large amount of information gets exchanged through the internet nowadays. Image steganography is one such way that can be applied to hide the secret information in an image. The embedding information in an image takes place in steganography such that unauthorized persons cannot identify the presence of hidden data through naked eyes. The aim is to implement embedding and extracting algorithms to hide large number of miscellaneous data (1 colour image, 1 text file and 3 black and white (B&W) images) in a single cover image by applying Daubechies Wavelet. The performance of the algorithm is measured by obtaining high security of the hidden data by embedding it in various patterns, high capacity, high Peak Signal to Noise Ratio (PSNR) and low Mean Square Error (MSE) by using different embedding techniques like Least Significant Bit (LSB) and pseudo random number technique.