Data Hiding in Audio-Video using Crypto-Steganography Technique for Authentication and Data Security

Steganography is the technique of hiding any secret information like data, password and image behind any cover file. In this paper we propose a method which is an audio-video crypto steganography system which is the combination of audio steganography and video steganography using some computer forensic technique for the secure communication. Our motto is to hide confidential information behind image and audio of video file. Since video contains the audio file as well as many still frames of images i.e. video frames. We can select a particular frame and audio from video file for hiding our secret information.LSB algorithm can be used for image steganography and RLSB algorithm can be used for audio steganography. Advanced Encryption Standard algorithm can be used for encryption and decryption of data. With the help of parameter appropriate parameters like PSNR value, histogram is obtained at both the receiver side and transmitter sides which are found to be identical at both ends for increasing data security. Hence the security of the data can be enhanced and as well as video quality is also maintained. This method can be used in fields such as medical and defense which requires real time processing.