What the pdf says is that it actually is as safe as you thought. It's just that the computer you are using to do the encryption is not safe. If you might be tar

What the pdf says is that it actually is as safe as you thought. It's just that the computer you are using to do the encryption is not safe. If you might be targeted by capable sources, don't trust neither your phone, your PC, your tv, or your car. That's what every spy movie tells you, and it's also true. Once you have encrypted critical data on a safe source, and are sure that the keys are safe, you can actually trust that nobody is breaking your encryption in the next few weeks. The safe source and safe keys are the problem, not the encryption.