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Encryption is the process of taking a message and scrambling its contents so that only certain people can look at your message. There are two types of encryption: symmetric and asymmetric encryption. Lets first take a look at symmetric encryption to understand why asymmetric encryption was created. To do that, let me introduce you to Alice and Bob. Alice has a sensitive document that she wants to share with Bob. She uses an encryption program to protect her document with a password or passphrase that she chooses. She then sends the encrypted document to Bob. However, Bob cannot open this message because he doesnt know the passphrase that Alice used to encrypt the document. In other words: he doesnt have the key to open the lock. Now comes a real problem: how does Alice share this passphrase securely with Bob? Sending it through email is risky because others might find the passphrase and use it to decrypt any messages between Alice and Bob. This is exactly the kind of problem that
