content: This is why I don't trust encrypted messaging. We're told it's secure and the government pretends that it's a real problem for them, but I can't help but believe that the NSA has a way to crack it.  Encrypt your data twice with different keys. As long as your keys are reasonably strong, it will be impossible to decrypt without knowing both keys.  The reason is that even if you successfully guess the first key, you will never know (since decrypting with both a wrong key and a correct one will result in gibberish). I spice it up by using two different encryption algorithms.  https://xkcd.com/538/