The Act is in fact the ideal tool to frame the innocent with.
The problem is that having any file which can't be explained is sufficient for a hefty prison sentence. They don't have to prove that it does contain encrypted data.
I fear having any tools like this on your computer will merely 'prove' your guilt in their eyes - even if they can't find a file which looks immediately suspicious, they could still claim you must have hidden something somewhere, and demand its details. Even if you have a protected file and reveal your innocuous data, they can still calculate the file's theoretical capacity, and claim that there is more. It is not up to them to prove you guilty, it is up to you to prove yourself innocent - and if you have any random junk then that will be impossible.