Data Security Using Data Hiding

For stenography we have used the least significant bit (4LSB) substitution method [2]. The 4LSB method is implemented for color bitmap images (24 bit and 8 bit i.e. 256 color palette images) and wave files as the carrier media. "The goal of stegnography is to hide messages inside other harmless messages in a way that does not allow any enemy to even detect that there is a second secret message present. " By using this proposed algorithm, we can hide our file of any format in an image and audio file. We can then send the image via e-mail attachment or post it on the web site and anyone with knowledge that it contains secret information, and who is in possession of the encryption password, will be able to open the file, extract the secret information and decrypt it.