Back in the early 2000's I stumbled across a piece of software sold in stores that claimed to let you make Encrypted CD's "that not even the government could crack!"
What it did was make a zip file using standard zip encryption, the original ZipCrypto, which is seriously flawed and easy to crack by the way, and prepend a Windows Executable, then burn that to the CD.
When run, it'd prompt for the password, then if a correct password was given, it'd show a fake Windows Explorer Window that you could copy files out of.
This was at the time, iirc, a 20 dollar piece of software.