Data confidentiality using steganography and cryptographic techniques

First, the sender encrypts the secret message using cipher algorithm which uses a secret key that should be known to both the sender and receiver. To provide dual security the encrypted message obtained from different encryption methods is hidden in an image based on LSB stegnography. From receive side the encrypted message is extracted from the image and is then decrypted using decrypted methods to get the original secret message. Matlab is used as a simulator to implement the techniques of encryption and steganography. Matlab provide highly computing environment and advanced in built function for image processing.