They could probably convince a judge that there is no reason anyone would ever use such a program for anything else. I can't think of any other reason why some

They could probably convince a judge that there is no reason anyone would ever use such a program for anything else. I can't think of any other reason why someone would want to convert a string to a decimal number to binary, then dump it as a zip file, then unzip it. The separate components would be fine (i.e. base converter, bit writer, unzipper). But put it together, and you have a provable intent, unless you can show that it can be used for other legal things.