FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The purpose of steganography is to conceal and deceive. It is a form of covert communication and can involve the use of any medium to hide messages. It’s not a form of cryptography, because it doesn’t involve scrambling data or using a key. Instead, it is a form of data hiding and can be executed in clever ways.

Detailed explanation-2: -Steganography is an additional step that can be used in conjunction with encryption in order to conceal or protect data. Steganography is a means of concealing secret information within (or even on top of) an otherwise mundane, non-secret document or other media to avoid detection.

Detailed explanation-3: -The main approach in cryptography is hiding the contents of information or message, thereby making the message secret, while the main approach in steganography is to hide presence of a message, thereby making the communication secret [9].

Detailed explanation-4: -Steganography is the technique of hiding secret data within an ordinary, non-secret, file or message in order to avoid detection; the secret data is then extracted at its destination. The use of steganography can be combined with encryption as an extra step for hiding or protecting data.

Detailed explanation-5: -The best known steganographic method that works in the spatial domain is the Least Significant Bit (LSB) which replaces the least significant bits of pixels selected to hide the information. LSB is a one of the widest and simplest methods used in image steganography.