> followed by the modulo operation can be simplified. BTW, Eric Smith has > implemented the DES algorithm in a PIC. Sorry, I asked about Eric Williams in last post, thinking of somebody else, should have asked how to get in touch with Eric Smith and whether it was DES or 3DES he'd implemented -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics