Highlights

While you can learn a lot about classic encryption methods and their weaknesses under the menu item Ciphers, you here have the chance to encrypt a text with the modern AES encryption method. Currently, this method is being regarded as safe – provided a “good” key is used.

You can have the Password generator provide you with a safe key. On this site you’ll also be able to learn about what a “good” password is and how to remember a seemingly complicated password without a problem.

You can customize a Matrix screensaver so that neon-green symbols form a specific word sign by sign.

Try beating the computer at the Taxman game and prove your mathematical skills by getting to the top of the high score.