Well Dan was kind enough to get me started a couple of months back.
It is furthermore debatable whether the CoG text files even legally count as encrypted at present, which means that again in this country and most of the EU means it is perfectly legal to unpack it, no different from unzipping a .zip file without a set password really.
As for the rest, most of what I was going to say has already been preempted by @LordOfLA
Edit, except to share the link to the official version of the ruling, for those interested.