5LSB steganogaraphyusing monotonie RGB color image as cover medium

摘要

This work presents new least significant bits based steganography technique to embed secret information in the five least significant bits of single channel out of three primary channels of RGB color image, at a time. The 5 least significant bits (5LSB) substitution technique make use of these individual channels as cover media and hide secret information in either red (R), green (G) or blue (B) channels of color image, taking one at time and leaving other channels unaltered. It has been observed that data hiding in the 5LSB of these channels doesn't create any visually significant distortion and doesn't attract the attention of eavesdroppers. The experimental results show that hiding information in blue channel provides significantly good visual quality of stego images than other two channels. While, hiding data in green channel create more distortion. The 5LSB steganography result in PSNR values larger than the threshold value of 30 dB for R and B channels of RGB color image, while, PSNR value for G channel is below the threshold of 30dB.