Even if the courts decide the 5th doesn't save you from having to provide a password, I'd think they'd need to prove 'beyond a reasonable doubt' that you didn't

Even if the courts decide the 5th doesn't save you from having to provide a password, I'd think they'd need to prove 'beyond a reasonable doubt' that you didn't forget. That a judge can simply decide someone didn't forget, and jails them until they provide a password, deprives the accused of a right to a trial.