Chapter 8, Problem 5E

Explanation of Solution

Steganography:

Steganography is the method to hide the data within data, image, or audio files. It is not a form of cryptography, it is another way of securing data and information in transit. The word steganography is from Greek word and the meaning of the word is “secret writing”.

Usage of steganography:

• It protect the message from third party and protect the data alteration.
• Enhance the secrecy of data.
• Using steganography the user can protect the secret communication on web to avoid transmission.
• Steganography can used in secret key and public key.
• The data can be hidden in text, image, and audio files. So it is used in many applications.

Steganographic tools:

The web shows many steganographic tools to hide the secret message in image and audio files.

These tools are:

• Xiao steganography
• Trojan
• OpenPuff
• Text Hide
• LSB steganography
• QuickStego, etc.

One of the steganography tool “LSB steganography” is downloaded for encryption. The following screenshot shows the way of this cryptosystem.

Screenshot of downloading steganographic tool

• The tool has menus to open and insert the files for encryption.

Screenshot of downloaded software

Go to “image” menu, browse the image and given the input with encryption key.

Screenshot of “Steganography tool”

Click on the “Create Cipher” button for cipher text input...