Practice Quiz in Cryptography Part 1

Question 1. In an asymmetric-key cipher, the sender uses the__________ key.

Question 2. A(n) ______ is a keyless substitution cipher with N inputs and M outputs that uses a formula to define the relationship between the input stream and the output stream.

Question 3. DES uses a key generator to generate sixteen _______ round keys.

Question 4. The Caesar cipher is a _______cipher that has a key of 3.

Question 5. _________ ciphers can be categorized into two broad categories: monoalphabetic and polyalphabetic.

Question 6. The _______ cipher is the simplest monoalphabetic cipher. It uses modular arithmetic with a modulus of 26.

Question 7. DES has an initial and final permutation block and _________ rounds.

Question 8. In a(n) ________, the key is called the secret key.

Question 9. A(n) _______ algorithm transforms plaintext to ciphertext.

Question 10. The DES function has _______ components.