A Review on Reversible Secure Audio Data Hiding Technique over an Encrypted Domain

Abstract

Stenography is the art of covered or hidden writing. The purpose of stenography is covert communication to hide the existence of a message from a third party. It is very important to hide the secret data efficiently, as many attacks made on the data communication. The host signal can be a still image, speech or video and the message signal that is hidden in the host signal can be a text, image or an audio signal. The cryptography concept is used for locking the secret message in the cover file. The cryptography makes the secret message not understood unless the decryption key is available. It is related with constructing and analyzing various methods that overcome the influence of third parties. Modern cryptography works on the disciplines like mathematics, computer science and electrical engineering. Here a novel reversible audio data hiding scheme over encrypted domain is proposed. In this project, we will develop the encryption process on secret speech signal data bits-level to achieve greater strength of encryption which is hidden inside the cover image. The encryption algorithm applied with embedding method is the robust secure method for data hiding. Compared with the other approaches it provides the higher embedding capacity and is able to reconstruct the original audio perfectly.