Hi 👋

We are going to learn about cipher codes!

What is a cipher?

Cipher codes, or just ciphers, are a procedure to encrypt or decrypt

This procedure is known as an algorithm, a set of very clear steps to follow to ensure the same results when solving a problem

Encryption uses a cipher algorithm to encode a message from plain text to cipher text

Decryption is the opposite of encryption and decodes a message from cipher text to plain text

The Caeser cipher, also known as a Shift cipher, is one of the most widely used encryption methods

Each letter in the alphabet is shifted by a certain number down the alphabet

Here the alphabet was shifted by 3 characters

So E in plain text becomes in B in cipher text

Use this cipher disk to decrypt this message ➡️

GUR  VQRF  BS  ZNEPU

                  ↓↓↓  ↓↓↓↓  ↓↓  ↓↓↓↓↓

                  ???  ????  ??  ?????

GUR  VQRF  BS  ZNEPU

                  ↓↓↓  ↓↓↓↓  ↓↓  ↓↓↓↓↓

                  THE  IDES  OF  MARCH

Now it is time to solve the 3 different ciphers on the tables around you. Group up!