A stupid idea: what if we passed a law making, say, knowing an encryption key illegal, with a $0.01 penalty per year? Then asking you for your encryption key would be asking you to provide self-incriminating testimony.
You don't need to do that - there's a decent argument to be made that forcing you to decrypt a drive is already forcing you to testify against yourself, in violation of the 5th Amendment.
Right, and that's what the article says a judge decided is NOT the case.
No he hasn't. Pls read the article. They are requiring her to provide the documents.
If you're able to pass silly laws, wouldn't it be easier to just pass a law saying discovery can't compel people to divulge encryption keys kept only within their own head?