So if an app installs an encrypted volume for which you don't have the password to, you go to jail? That doesn't make sense. How can they know if I have the password or not
Note that the recent high-profile case of a man being jailed involved him refusing to decrypt, rather than claiming he didn't know. He was deliberately trying to test the law regarding the permissible scope of inspection of digital data, to force the matter into the courts so the issues could be litigated in a controlled context untainted by other potential crimes; being arrested and charged was part of his plan.