AUDIO STEGANOGRAPHY USING LIVE AUDIO STREAM AS COVER WITH DYNAMIC KEY GENERATION
Namitha M.V, G R Manjula · International Journal of Engineering Applied Sciences and Technology · 2020
This paper presents a novel approach to audio steganography, by considering stream covers (live audio) as cover.A stream cover is a cover where the sender has no access to the entire sequence of numbers in the embedding process as defined by Stefan et al(2000).The cover utilized to hide secret data(stego) and the original cover should be similar and thereby not raising any suspicion to the intruder.Because of this requirement audio files are well suited cover for embedding the secret information as they are popular among humans.In live audio steganography there is an added advantage as the cover is unique each and every time, as it may be the communication between two individuals just like a casual telephonic talk.The intruder will not have the reference audio to compare perceptual and non-perceptual quality of the audio unlike famous audio files which are publicly available.LSB insertion is a common, simple approach to embedding information in a cover.Unfortunately, this approach is vulnerable to steganalysis.Instead of using every byte, it is possible to select some bytes in a random manner according to a secret key.Sharing of this key is a time-consuming process with the risk of man in the middle attack, hence its proposed in this paper where in the key will be based on the current time.The sender and the receiver will generate the key by considering current time as seed followed by mathematical manipulations by bringing the advantage of randomness without the risk of key sharing.