[SpicyLemonZest]

There are many jurisdictions in the US (not all!) where you can't be compelled to turn over a password in a criminal case that's specifically against yourself. But that's a narrow exception to the general principle that a court can order you to give them whatever information they'd like.

[HWR_14]

It's a federal constitutional protection to not be compelled to turn over your password. If you think a jurisdiction can compel you, I would like references.

[SpicyLemonZest]

The ACLU has a good overview (https://www.aclu.org/news/privacy-technology/police-should-n...). A number of state-level supreme courts have ruled that the protection you're describing exists, but others have ruled against it, and on the federal level AFAIK only the DC Circuit has made a clear ruling about it.