Requires Python 3.10.x or newer and implements useless encryption (aka, it's not thread-safe, it's not crypto-safe, please don't use it, I made it as a joke).
To encrypt a message:
python -m useless encrypt key messageTo decrypt a message:
python -m useless decrypt key messageNote that you need to include quotes if either your key or your message contains a space. Example:
python -m useless <encrypt|decrypt> "key with spaces" "message with spaces"