>If we accept that this encrypted space is protected by the fifth amendment,
the encrypted space isn't protected by the 5th Amendment. The content of your brain is. If the police finds the password written on post-it under the keyboard, they would have all the rights to use it.
>then why won't we just regulate that encryption needs a "law enforcement access key" or make such encryption just illegal?
1st Amendment. A right to produce all kind of communication garbage, incl. XOR-ed image of your brain with Antarctica map or quasi-scientific reasons against tax increases or this my post.
the encrypted space isn't protected by the 5th Amendment. The content of your brain is. If the police finds the password written on post-it under the keyboard, they would have all the rights to use it.
>then why won't we just regulate that encryption needs a "law enforcement access key" or make such encryption just illegal?
1st Amendment. A right to produce all kind of communication garbage, incl. XOR-ed image of your brain with Antarctica map or quasi-scientific reasons against tax increases or this my post.