Credit Card Checksum Verification

This is a CLASSIC ASP project. I need some ASP written for me which will verify the checksum of a credit card number in order to know that the number is valid. I will be passing the credit card number to the script via a form using POST. The credit cards I will be passing will be Diners, Amex, Visa, Mastercard, Switch and Visa Electron. I have been reading around and can see that usually this is done using the LUHN formula but I am not sure if its an outdated method, I need the latest way of doing this but in CLASSIC ASP. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Classic ASP