[an error occurred while processing this directive] Interact!
This is the part of "Tales of the Encrypted" where you can explore encryption by doing it. You can work at your own pace, try what you like, and encrypt what you like.
If you do not live in the United States, you might want to check on local encryption laws before using any of these. You should be fine, as none of these breaks US Export Regulations, and none of them is considered secure by today’s standards. However, it is always a good idea to be safe.
That brings up another point. These applets are provided for entertainment only. If you encrypt something with them, you should assume that it is not safe. All the algorithms demonstrated were used historically, and understanding them should help you understand modern ones. They have been proven insecure, and we recommend strongly against using them for any sensitive data. If you need strong encryption, look into a product such as Pretty Good Privacy (PGP).
On to the applets:
First, we have created severalcryptographic puzzles for you to solve. If you manage to figure one out, you get your name in our Hall of Fame. Good luck!
Second, there are applets scattered throughout "Tales". These links take you to pages that have these interactive devices on them.