1) Before computers why were messages usually encrypted? a) They weren't encrypted before computers b) So in war Commanders/leaders could communicate safely with their troops c) To share messages with people who were clever enough to solve them 2) Who was the first know user of the Caesar Code? a) Julius Caesar b) Alan Turing c) Miss Dunn 3) When put a message into code what do we call it? a) Encipher b) Decipher c) Decode 4) When we solve a code what is the process called? a) Encipher b) Decipher c) Code 5) When solving a code, we need a letter or a word to help us get started, what is this often referred to as? a) Lock b) Website c) Key 6) An encryption key is used to help decrypt messages a) True b) False 7) to encrypt a message you need 2 main parts, a _________ & a key a) Cipher b) Lock c) Door 8) In Cryptography, original message, before being transformed, is called a) ciphertext b) normaltext c) plaintext 9) What is encryption? a) A language like Python designed to communicate instructions to a machine b) When you put data / text into code making it difficult to read or understand. c) A way of getting hacking a website 10) The process of converting a ciphertext into plaintext. a) Ciphering b) Decryption c) Coding

Encryption Key Words 2

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