Question

What is difference between steganography and cryptography?

Answer 1

The difference between steganography and cryptography is that in cryptography, one can tell that a message has been encrypted, but he cannot decode the message without knowing the proper key.� In steganography, the message itself may not be difficult to decode, but most people would not detect the presence of the message.� When combined, steganography and cryptography can provide two levels of security.� Computer programs exist which encrypt a message using cryptography, and hide the encryption within an image using steganography.