Encryption - Caesar Cipher

What is the main purpose of encryption?

• To speed up internet connections

• To increase the size of the data

• To change the color of the text

• To keep data secret by scrambling the message

What is Caesar's cipher?

• An encryption method used by Julius Caesar

• A type of computer virus

• A famous speech by Julius Caesar

• A game developed by Julius Caesar

What makes Caesar's cipher easy to break?

• It was only used by Julius Caesar

• It is written in Latin

• It only has 26 possible keys

• It uses a single key for all messages

What is the main problem with symmetric encryption on the internet?

• It is too slow

• It requires a private meeting to agree on a key

• It uses too much data

• It is not secure

What does a public key do in asymmetric encryption?

• Copies the data

• Decrypts the data

• Encrypts the data

• Deletes the data

What does SSL/TLS stand for?

• Secure Socket Layer / Transport Layer Security

• Super Secure Lock / Total Lock Security

• Simple Socket Layer / Transmission Layer Security

• Secure Socket Link / Transport Layer Setup

What indicates that a website is using public key encryption?

• A green lock icon or 'https' in the address bar

• A pop-up message asking for permission

• A red warning sign

• The website loads very slowly

Why will we need to increase the standard key length in the future?

• Because the internet will get bigger

• To keep up with the speed of computers

• To make encryption cheaper

• Because keys wear out over time

What is the main challenge in securing data on the internet?

• Making encryption fast enough

• Teaching people how to use encryption

• Finding enough data to encrypt

• Making encryption too hard for computers to break

With a Caesar cypher of 3 the letter A would become ​ ​ (a)  

• B
• F
• D
• E