An Improved Approach in Audio Steganography Using Genetic Algorithm with K-Bit Symmetric Security Key

In today's world, transmission of secret and important data has various security issues. Information security has become a major issue in the field of data communication. One of the many techniques used to resolve these security issues is Audio Steganography. Audio Steganography means hiding some data in an audio file so that the intruder cannot know about the data. In this paper, we present an improved and new approach for hiding secret messages in audio clips. We use a security key and a Genetic Algorithm to embed the message bits into cover audio samples. One or two message bits are embedded in different Least Significant Bit (LSB) layers of each sample. We have successfully tested proposed technique on several audio sequences. The experimental results show clear demonstration that the proposed technique has higher message embedding capacity and provides less distortion to the output sequences.