Symmetric Key based Audio Steganography for Mobile Network

Abstract — This paper presents an innovative Symmetric Key based Audio Steganography algorithms for providing security in mobile network. In this paper the data to be transmitted is encrypted using proposed symmetric key cryptography algorithm. The encrypted text is hidden within an audio file during transmission. Fibonacci series based bit replacement technique is used for the purpose of hiding the data. The audio and the data file are converted into stream of bits. Encryption is performed to convert the plain text to cipher text using the proposed symmetric algorithm using 128-bit key. The bits of the cipher text to be replaced are selected based on Fibonacci series. The time complexity of the proposed algorithm is 75% less than the previous approach.