>Yes, this is where the hairs rise on our arms: if you have a recorded file with radio noise from the local telescope that you use for generation of random numbers, and the police asks you to produce the decryption key to show them the three documents inside the encrypted container that your radio noise looks like, you will be sent to jail for up to five years for your inability to produce the imagined documents.
Of course, if you have access to the files, you could just XOR the noise with some innocuous documents, and send the result to the police saying it's a one-time-pad.
Hell, you could say the key is head -c `wc -c secret_file` /dev/urandom and they wouldn't be able to argue. It's turtles all the way down if they ask you to decrypt the result.
Of course, if you have access to the files, you could just XOR the noise with some innocuous documents, and send the result to the police saying it's a one-time-pad.