Who was the first know user of the Caesar Cipher?

• Caesar Romanus

• Julius Caesar

• Alan Turing

• There isn't one

What machine was used during WWII to encrypt and decrypt German messages?

• Enigma
• Atbash
• Secret
• Puzzler

What was the name of the man who led the team that cracked the German's "Enigma Code" in WW2?

• Tim Berners-Lee

• Alan Turing

• Stephen Hawking

• Bill Gates

Which one of the following statements is FALSE?

• Cracking the Enigma Code shortened WW2 by at least two years and saved millions of lives

• Alan Turing was the first person to come up with the idea of a programmable machine

• Alan Turing was one of the pioneers of modern computing

• Polish mathematicians were the first ones to crack the Enigma Code

In Cryptography, original message, before being transformed, is called

• Simple Text

• Plain Text

• Cipher Text

• Filled Text

A(n) ______ algorithm transforms cipher text to plain text.

• Encryption

• Decryption

The _______ is a number or a set of numbers on which the cipher operates.

• secret

• cipher

• key

• none of the mentioned

What is encryption?

• When you put data / text into code making it difficult to read or understand.
• A secret or disguised way of writing; a code.
• A formal language designed to communicate instructions to a machine
• What is put in, taken in, or operated on by any process or system.

A cipher is _________________________.

• a person who makes up secret codes

• an algorithm that is used to scramble text so that it can be passed in secret

• a lock that can be used to lock a message in a lock box

• any puzzle, such as a crossword or Sudoku puzzle

The process of converting a ciphertext into plaintext.

• encryption

• decryption

• plaintext

• cryptography