Encryption: Introduction
Have you ever wanted to send a message that only your friends could read? Want to keep a teacher from reading your note in class? Taking a message and make it so only people who know how can read it is called encryption.
When we encrypt a message, we make it hard to read. When we decrypt a message, we change it back into a form we can read.
Try it Out
Type a message in the box below. Then push the "Encrypt" button. Can you figure out the encryption method?
Invent Your Own
Now invent your own encryption method. Here are some ideas:
- Change each letter into a number.
- Change each letter into a different letter.
- Change the order of letters in the message.