Earlier quoted context omitted.
Why? He's in possession of data deemed contraband, but apparently not linked to distribution. The police need to demonstrate possession and can do so when their search is complete. The police did an investigation, obtained a warrant to search for the contraband and seized the hard drive. The defendant was ordered by the judge to decrypt the drive per the warrant, and refused to follow the order. He's in contempt of c…
Because we have the 5th amendment. nor shall be compelled in any criminal case to be a witness against himself As I understand it, Miranda established that the 5th amendment applies to all interactions with law enforcement, not just answering questions in court. So they can search the hard drive all they want, but the constitution protects us from being required to disclose what's in our heads which, in this case, sh…
The privilege against self-incrimination applies to any interaction which they introduce into evidence against you in a criminal case, or from which they derive information on which they then gather other evidence that is used against you in a criminal case.
It doesn't actually protect you against the police doing anything, or forcing you to provide information (other Constitutional provisions may, however), it just protects you against certain information being used against you in criminal court.