In related, I learned about Cybersecurity. The work above is from the unit: The ABC’s of Cryptography. In this unit, you learn about how ciphers work, why to use ciphers, how the Caesar Cipher works, how to crack the Caesar Cipher, and you learn about the Vigenere Cipher. Cryptography is used to encrypt information so only authorized people can read it. 

The Caesar Cipher works by using the original alphabet and shifting it by a certain number. That number becomes your key to decrypt the cipher. For example, the word cat becomes dbu when using a key of 1. Then, you would shift the alphabet by one letter and write the original alphabet underneath it. Lastly, find each letter one by one until you are done. 

The Vigenere Cipher works by using multiple Caesar Ciphers with different shift values. For example, you take the word hi and use it to encrypt a message. The letters h and i have different shift values. This means brute force will not work. Brute force is when you try every combination of something, like the Caesar Cipher. There are 26 possible combinations, so the person would go through every combination until they crack the message.