yea, the guy who uploaded the patch probably had the decrypted DLC already.
If he knows how to rebuild the DLC, it's a very simple and fast process.
I won't share the Downloadlink to the DLC because it's a copyrighted file and I don't support piracy ;)
If you want to use google, you're free to get it, I can't forbid that ^^'
Have fun playing the Game :)