A monoalphabetic cipher and a polyalphabetic cipher

1 What is the difference between a monoalphabetic cipher and a polyalphabetic cipher?

2 What are two problems with the one-time pad?

3 What is a transposition cipher?

4 What is steganography?

5 Why is it important to study the Feistel cipher?

1 List and briefly define types of cryptanalytic attacks based on what is known to the attacker.

2 What is the difference between an unconditionally secure cipher and a computationally secure cipher?

3 Briefly define the Caesar cipher.

4 Briefly define the monoalphabetic cipher.

5 Briefly define the Playfair cipher.

Solution: