Note that I said "cooperate"with a warrant as opposed to stepping aside and letting them do jobs. For example, do I need to provide the combination to my wall safe or the password to my computer? Not giving the police the combination to my safe will only slow them down and potentially protect my property by not requiring them to call in a specialist to force the safe open, possibly destroying it in the process. Some forms of computer encryption can’t realistically be cracked but that won’t stop the police tech investigators from trying.
Is the act of refusing to disclose my computer password or my safe combination after being presented with a legal search warrant a criminal act in and of itself?