He shouldn't have to decrypt his hard drives, and I support his decisions. The problems with this are numerous. First of all no one has any duty to provide the police with evidence as a 5th amendment protection. It's not a "right" for the police at all to have. Imprisoning someone for failure to disregard their constitutional rights is absurd. They have no evidence to hold him period.
"no one has any duty to provide the police with evidence as a 5th amendment protection" I like that idea. However, the 5th amendment's protection is something different: "No person shall be compelled in any criminal case to be a witness against himself." Consider the case of someone running a drug lab or counterfeiting press in their residence. Police show up with a warrant based on probable cause to search the resid…
Is this true? The person is required to not do anything to hinder police but is the subject of a warrant ordered to assist them with the search? IMHO the difference between a key and a combination to a safe, which is the whole premiss behind being compelled to produce a decryption key being a violation of the 5th amendment, would seem to be at ends to that interpretation. Obviously if the door is unlocked when the warrant is served then the subject can't lock the police out but if there's an interior door that's locked, can the subject be compelled to provide the combination to unlock it? That's no different than being compelled to provide the combination to a safe so that would imply that the subject of a search warrant doesn't have to assist the police, just not actively impede the execution of the warrant.