This is way to securely encrypt text for messages, save games, and more! To encode, simply click the encode button, then type in a number 001-999 (this will be the key), and then type the message after that, once done click the enter key. To decode, simply select decode and paste the string you wish to decode, and click enter. All outputs will appear in their respective boxes, triple click on the string to select and then copy, and you have your message! Spaces DO get encoded.
No need to give credit when used for messaging (as that would expose how you are communicating), but please mention me if used for a project encryption.