A Highly Secure Video Steganography Inside DWT Domain Hinged on BCD Codes

Abstract

Prime need of hiding data from eavesdroppers is accomplished by the use of steganography, which is an area of research from years. Steganography is an artifice and science of hiding information inside a medium. Modern mediums are text, image, audio tracks and video streams. After the evolution of Internet, wide researches have been carried out on video steganography due to high capacity of information been stored in a video file. Hiding of information in a video file can be achieved in a variety of ways. Each and every technique used has its own merits and demerits. In this paper, a highly secure video steganography has been propounded rooted on BCD coding. To ameliorate the collateral of the algorithm, the covert message is first encoded by BCD coding. Then, it is implanted in the DWT coefficients of video frames. The middle and high frequencies zones of DWT are regarded as less sensitive to HVS, so the covert message is implanted only into mesial and high frequency DWT coefficients. The results of propounded algorithm are correlated with the LSB insertion method. The results manifest superior performance for propounded algorithm as compared to LSB insertion method, hence shows minimal trade-off of visual quality.