Echo Hiding Approach in Video Forensic

Abstract: With the advancement in the information processing and transferring device, security of the transferred information is of significant concern. Several methods have been developed for secured data transfer. Steganography is one of the methods. Our invention relates to Digital steganography, which is the art of inconspicuously embedding data within a data. Steganography's goal in general is to hide data well enough that unintended recipients do not suspect the steganographic medium of containing hidden data. Here, in this article we introduce this steganographic technique that hides messages in video as well as audio which proposes a scheme that improves the robustness of data hiding. In Echo hiding, message is embedded in a sound signal in video stenography by introducing an echo into the discrete signal. It has the advantage of high data rate. In echo hiding, encoding is done by breaking the signal into blocks & each block is assigned binary “1” & binary “0” depending upon some offset value that we use in encoding.

Keywords: Audio steganography, video steganography, Echo hiding, Discrete cosine transform.