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by chasil 1214 days ago
They are certainly able to do so.

The only tool that I know of that can encrypt SMS messages is Silence. The source code is quite stale.

The fifth amendment allows an individual to refuse to disclose a password in criminal trials (they can be compelled to open biometric locks, hwoever). I don't know if these protections would extend to civil proceedings such as occurred here; if not, the judge could hold such witnesses in contempt.

https://silence.im