Encryption

What is the Caesar cipher?

• An encryption method that replaces each letter in a message with one ahead or behind in the alphabet

• A complex encryption method using two keys (public and private)

• A way of password protecting a file invented by Julias Caesar

• The process of taking a plaintext password and hashing it before storing in a database

Encrypt the word 'cipher' using the Caesar cipher with a key 3.

• FLSKHU

• FLSJIV

• GLSKGU

• FLTFDW

Encrypt the word 'Quiz' using the Caesar cipher with a key of 3.

• TZLC

• TXKC

• Txlc

• TYMC

Encrypt the world 'School' using the Caesar cipher with a key of 3.

• wfjrrm

• vfkrro

• vfjrro

• wgkssp

What is encryption?

• Encoding a message so that it cannot be read without the key

• Abbreviating data for quicker entry into a computer system

• Password protecting a file

• Scrambling text up randomly so it can't be read

A word has been encrypted with a Caesar cipher to Cbu. The key used was 1.

What was the original word?

• abc

• Bav

• Bat

• One

What is the algorithm of ceasar's cipher?

• Each letter is replaced with a particular symbol

• Each letter is replaced with a letter a certain number of steps down the alphabet

• Each letter is replaced with a particular number from 0 to 26, and numbers are replaced with letters.

• Each letter is replaced with a completely random number

Using a Caesar cipher, I have converted the word Happy to KDSSB. What key have I used? (Type it as a digit)

(a)  

 

Encryption is a way of __________________

• Hacking Passwords

• Encoding Information

• Securing Viruses

• Deleting Application

Taking a secret message and reproducing the original plain text is known as?

• Caesar Cipher

• Encryption

• Cipher Text

• Decryption