You have been working diligently on breaking codes with numbers and colors. Now it is time for letters and symbols.
Codes have been around for a very long time. Throughout history, world events have changed because of secret messages. Sometimes, however, it is important that only a few people understand the message. In the world of cryptology, codes are used to make messages secret by changing the words into something else. In order for your friends to understand the coded message, they need the key!
Next, you will learn about different codes, how to make codes, and what to look for when trying to break a code. Let’s start with the Polyalphabetic Substitution Ciphers.
Try these online secret messages: