Hi, I have some doubts I would like to clear about Trucha Signer.
After you find the "common key" and insert it in the .reg file you will be able to open any .iso in Trucha Signer.
In the tutorial (http://gbatemp.net/index.php?act=ST&f=108&t=76657&st=0#entry1005253) finding the "sd key", "md5...