(sigh)

If the authorities had any information other than the fact he has encrypted hard drives then he would be compelled to assist in decryption. They don't, that's the point.

Due process such as this is their to protect people from the state. People are presumed to be innocent and State's are presumed to be malicious and oppressive. Which they naturally are, their very purpose is to tell you what you can't do. The Bill of Rights provides a set of ground rules for the state's interference in an individuals life. Without it, you end up with Slavery, Genocide and mass Oppression. The fact that now and again it inconveniences the trial of someone who may or may not be a peadophile just goes to show how effective it is.