Encryption tool - Color mixing activity

Use this tool to create a secret color key with a friend in order to exchange encrypted messages. If you already have a secret key, you can skip to the next section to encrypt and decrypt secret messages.

Pick your private color:

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Your private color will get help create your secret key. Don't share it with anyone! It needs to stay secret if you want your encrypted messages to be secure.

Pick a public color:

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Decide on a public color with your friend. Both of you should pick the same color for this box. It's okay if other people know about the public color you choose, as long as your private colors stay secret.

Your public mix

#568954

This is your public mix. Share this code with your friend so that they can create your shared secret key. It's okay if other people see this code.

Your friend's public mix

Enter your friend's public mix:

Get your friend's public mix code and type it into the box above. You need it to create your shared secret key.

Your secret color code:

#150c14

Keep this code somewhere safe to send and receive secret messages in the future. Don't let anyone else see it!

Public Key Cryptography

Secret key exchange

Your public mix

Your friend's public mix

Your secret color code:

Encrypt and decrypt using colors

Encrypting text

Decrypting text