What is cryptography?

Cryptography is like a special secret language that only certain people can understand.

Imagine you and your best friend have a toy box. You both know a secret code to open it, but no one else does. When you want to send a message to your friend without anyone else knowing, you write it in this secret code. That’s what cryptography is like!

Think of cryptography as writing a letter that only the right person can read. You use a special way to change your message, maybe by shifting letters or replacing them with symbols, and then send it. Your friend uses another special way to turn it back into normal words.

People use this secret language all around us, like when you log in to your favorite game or send a private message on your phone. It keeps things safe so only the right people can see them, just like your secret code for the toy box!