LSB Modification based Audio Steganography using Advanced Encryption Standard (AES-256) Technique

Steganography is the practice of hiding information and is well known for concealing the existence of the communication. This technique deals with the insertion of the secret message in an appropriate carrier like writing, audio. Out of these carriers, digital writing (text file) message are mostly preferred because of their wide usage on the Internet. The LSB modification technique allows the secret information to be embedded in the least significant bit of the cover message but this technique can be broken very easily. MATLAB software has been used for the execution of steganography. This paper is used Least Significant Bit (LSB) modification technique. Two techniques are being proposed which work on the basis works on the current sample bits. These techniques spread the secret message on different bits of the sample. The methodology has also involved an AES encryption scheme as a backup in case the steganography algorithm has been broken. This will not compromise the confidentiality of the secret information and implemented Point to Point link between two pc.