Originally Posted by
mre5765
Good luck breaking 256 bit AES encryption.
They don't break the 256-bit encryption key. They break the password, in a brute force manner. For most passwords, using a supercomputer this can be done in a matter of weeks at most.
So the way to defeat that is to use not only a password, but also a keyfile. A keyfile is a file that gets combined with the password-generated key to create the decryption key. So now the brute force attacker needs to iterate not only over all possible passwords, but all possible keyfiles.
Good luck breaking that.