Checksum.Exe Doc's
Version .9a
By Scourge

______________________________________________________________________________  
                   I n t r o   T o   C h e c k s u m
------------------------------------------------------------------------------
    Checksum is a simple program written by Scourge, using an checksum by Dr.
Cyclops. It creates valid Credit Card numbers using the 'Mod 10' checksum.
This checksum is as follows: 

    A card number with the format: XXX XXX XXXC (this is a Dayton's Card)
    where: X is a number, and C (the key to the formula) is a check-digit.
    Ignore the check digit (we'll create one) fill in the X digit's with 
    numbers ( zero through nine ). Take every odd digit (from right to
    left) a  and multiply it by two, if the resulting number is greater or
    equal to ten subtract nine. Do this for all of the odd digits and add
    the result's together. Next add all of the even digits to the odds. With
    the resulting number find the next higher multiple of ten and subtract
    out result from it. There you have it! The Check-Digit! You have created
    a valid card number! Yea. Big deal.

______________________________________________________________________________  
                  H o w  T o  U s e  C h e c k s u m
------------------------------------------------------------------------------
    When you run Checksum.Exe it will prompt you with  'Choice (M, V, Or A):'
Simply enter M for Mastercard, V  for Visa, Or A for American Express. It will create random credit card numbers for you. Any key will abort. If and when I ever release a version 1.00 it will feature being able to print numbers, and send them to a file. But not now. 

______________________________________________________________________________

                          F i n a l  N o t e
------------------------------------------------------------------------------

That's it. About all I have-to-say is that I am in no way responsible for any
abuse some-one may decide to put this knowledge to.



    
