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Steganography: Concealing Information

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Questions and Answers

What is the main focus of steganography compared to cryptography?

Ensuring secure communication

Hiding the existence of the message (correct)

Creating digital media

Encrypting the message contents

How does steganography differ from cryptography?

Steganography conceals messages in a cover medium, while cryptography encrypts messages. (correct)

Steganography uses keys for decryption, while cryptography uses LSB replacement.

Steganography is widely used for military communications, while cryptography is for personal use.

Steganography focuses on sharing messages publicly, while cryptography keeps messages private.

What is the purpose of embedding in steganography?

To hide the existence of the message (correct)

To change the color of the image

To encrypt the data

To compress the cover medium

Which method of embedding data is commonly used in steganography?

Replacing least significant bits Signup and view all the answers

Why can least significant bits be altered without significantly affecting the cover medium quality?

They are not visible to humans. Signup and view all the answers

What determines the choice of cover medium in steganography?

The context and intended recipient Signup and view all the answers

How can a recipient reveal a hidden message in steganography?

By analyzing or extracting least significant bits Signup and view all the answers

Why must a recipient have knowledge of steganographic methods to reveal a hidden message?

To effectively extract or analyze least significant bits Signup and view all the answers

What does steganography focus on concealing?

The existence of the hidden message Signup and view all the answers

Which characteristic of least significant bits makes them suitable for embedding data?

Their insignificant impact on media quality Signup and view all the answers