Cryptography Types of Cryptography Asymmetric
 Asymmetric cryptography is harder to use. Each person who wants to use asymmetric cryptography uses a secret number, and a different number that they can tell everyone. If someone else wants to send this person a message, they'll use the number they've been told to hide the message. Now the message cannot be revealed, even by the sender, but the receiver can easily reveal the message with his secret number. This way, nobody else needs to know the secret.