Not really get a warrant and for you to decrypt in all cases. Right now they can only do that provided that you would not be further incriminating your self. The case in question is the
In re Boucher case. Here border guards had already seen the portions of the drive's contents . Then there is the later
US v. Kischner case that ruled it was a violation of a person's 5th Amendment right to force them to divulge their encryption password to produce evidence that could be used against them in that case. To further muddy the waters there is also the mess that is the
US v. Fricosu case where a judge order the defendant to produce the password but a list of probable password was produced by her ex husband so the constitutionality of the order from the judge still remains in question since that issue was bypassed.
IANAL YMMV.
So what we can glean from these 3 cases is:
1. Don't cross a border with your encrypted device on so encrypted material can be seen.
2. Don't piss off your ex
3. Don't be a pedo (why do all cases involving encryption seem to be pedo ones, yes I understand they are easy targets everyone hates)
4. This issue isn't decided and it seems the government doesn't want it resolved.