Why not just use an encrypted partition. I guess then it is a problem of not being persuaded to reveal the key. What laws/rights does the user have as to revealing the key ? If the court order you to produce something, you have to or be in comptempt. The court will not order you to testify against yourself. The court can make you show up with the electronic storage that holds your keys, for example, because this is a physical device. So the issue hinges upon the question of whether uttering a passphrase which makes the device usable counts as giving testimony. Is explaining how something works (aka giving a passphrase) testimony? Quite possibly not. The explanation or passphrase is not incriminating by itself; it says nothing and claims nothing. One solution to this is to give the passphrase (or other access information) to someone who won't give it back to you if you are under duress, investigation, court order, etc. One would desire that this entity be in a jurisdiction other than where an investigation might happen. Eric