[kinghajj]

What if there is no evidence that the file belongs to the user other than the user knew the key to decrypt it? Would prosecution not be possible? I mean, what if you provide the combination to a safe that contains contraband--drugs or guns or undisclosed cash, but no ledger saying "this is the property of X"--wouldn't the combined facts of discovering of the safe in the possession of the defendant and their disclosure of the combination incriminate them?

[tedunangst]

I suppose. Even if you don't disclose the combination, I imagine the jury would be quite curious how you came to be in possession of a safe but not its combination.