So this is your help? Minecraft's team is helping me more than you do? i can't believe this... My launcher strictly respects minecraft's eula and, i would quote a precise part of it: "Otherwise we are quite relaxed about what you do - in fact we really encourage you to do cool stuff - but just don't do those things that we say you can't.".
I just asked what those checksums mean, i don't want to give a cracked version of anything, i don't want anyone to come here to complain, i'm just making a launcher on my own.
I really hope you are not that close minded