> Afaik in order to work as advertised the pad must be the size of the data > + 1 bit. Where do you store it ? > > Peter In a PIC with twice the code space as the application requires. Nobody said security is free. :-) Bob Ammerman RAm Systems _______________________________________________ http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist