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Types of Ciphers: Substitution and Transposition

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Types of Ciphers: Substitution and Transposition

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Questions and Answers

What is a requirement for a one-time pad encryption scheme to be considered unbreakable?

Making each pad with truly random values (correct)

Reusing the pad multiple times

Using a pseudorandom number generator

Seeding the number generator with a predictable value

In steganography, what is the purpose of hiding data in another media type?

To encrypt the data securely

To make the data invisible to everyone except the sender and receiver (correct)

To digitally watermark the media

To compress the data for efficient storage

Which method is used to embed a hidden message in steganography?

Most significant bit (MSB)

Middle bit (MB)

Least significant bit (LSB) (correct)

Random bit selection

What type of encryption is achieved by a one-time pad encryption scheme?

<p>Symmetric encryption ciphers (C)</p> Signup and view all the answers

Why is it crucial for each pad in a one-time pad encryption scheme to be used only once?

<p>To prevent attacks based on frequency analysis (C)</p> Signup and view all the answers

Types of Ciphers: Substitution and Transposition

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Podcast

Questions and Answers

What is a requirement for a one-time pad encryption scheme to be considered unbreakable?

In steganography, what is the purpose of hiding data in another media type?

Which method is used to embed a hidden message in steganography?

What type of encryption is achieved by a one-time pad encryption scheme?

Why is it crucial for each pad in a one-time pad encryption scheme to be used only once?

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