
I'm a bit late - but
Being convicted for not disclosing a password (or more accurately not helping investigators look at your stuff) is a major change in common law.
In my view this is a bad thing.
If they wanted to open a safe and wanted the combination they wouldn't have a leg to stand on. You can refuse without penalty.
In my jurisdiction you also have the problem that you have to prove you don't know a password. It's not enough that it's innocent until proven guilty. Now - in this scenario - you are guilty until proven innocent. You also can't use a defense of self-incrimination ( usable in common law )
Overall Big Brother wins. Your right to privacy loses, your right to innocent until proven guilty loses. Your right to avoid self-incrimination loses.
I speak this as someone who works as an officer of the court (expert witness) and who has current cases where this is an issue and will result in conviction or probably innocent parties.