The law on this matter is, as I understand it-IANAL, that a password is a product of the mind and so it would be a violation of your fifth amendment rights to c

The law on this matter is, as I understand it-IANAL, that a password is a product of the mind and so it would be a violation of your fifth amendment rights to compel you to give up the password, as it would be "testimony against yourself." A password written on a piece of paper or a physical key would be a different matter. This doesn't mean they can't confiscate your laptop and/or image the hard drive to try and crack your encryption later though, it just means if you have encrypted files you can't be penalized for failing to disclose the password (probably). This lecture from Defcon 17 may be relevant: https://media.defcon.org/dc-17/audio/DEFCON%2017%20Hacking%20Conference%20Presentation%20By%20Panel%20-%20Ask%20The%20EFF%20The%20Year%20in%20Digital%20Civil%20Liberties%20-%20Audio.m4b https://media.defcon.org/dc-17/audio/DEFCON%2017%20Hacking%2...