Analysis of Audio Steganography combined with Cryptography for RC4 and 3DES Encryption

In this digital era, most of the real-time applications makes use of digital data. At the same time, security of this data becomes important and essential. Different aspects to be considered while dealing with such digital data. They are preserving authenticity and make sure that the data is not modified in transit and no one else other than intended user can read this data. To fulfil these requirements, many techniques are available to protect this data. Cryptography is to jumble the original information so that unauthorized person can’t see it and that of steganography is to hide the original information. Depending on the cover medium used, steganography has many types such as image, audio, and video. Audio steganography deals with the noise, echo, samples etc present in the audio. LSB, Echo hiding, phase coding, Tone insertion are some of the types of audio steganography techniques. These techniques have their respective pros and cons. The main intention of the presented technique is to reconciliate cryptography with steganography and give better protection.