I have a question...
Suppose the suspect Alice only has a portion of the key. Someone else (Bob...) has the remaining key bits.
Alice is busted, and 'compelled to give the key', and DOES provide her portion of the key.
Bob is never found.
Then Alice would be indefinitely imprisoned, even if she would have actually complied with the court order.
It seems unethical, to me.
Bonus question: Alice pretends that Bob exists, but actually he does not, but police cannot prove that. What then?
A possible answer to the first question: Alice is not compelled to provide the key. She is compelled to decrypt the drive. Obviously she can't do that without Bob. Alice is screwed and will spend the rest of her life in prison.
Seems harsh.
Alice has created a file containing random data. Authorities think it is an encrypted volume and wants Alice to give up the key. Alice has no way to prove it is just a file with random data and is imprisoned indefinitely for essentially having a file with random data =]
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