Credit Card Verification - CVV Numbers

Question

I use authorize.net {aim} for my payment gateway. I am using test authorize for a developer account.

I used https://test.authorize.net/gateway/transact.dll with C # and it works successfully without errors.

But my client needs to check the cvv [Card Verification Value] value. How can I do that?

Answer 1

In addition to checking the format of basic sanity (for example, 3 or 4 digits depending on the card), CVV can be confirmed by approving / authorizing the payment , which must be carried out by your payment processor. See the Transaction Types documentation at .. drum roll .. authorize.net.

The Luhn checksum (or similar) used for the card number is designed to detect simple human input errors, such as number transfers, and does not guarantee that the number is valid - simply that it can be valid. There is no need to have a similar CVV checksum due to the small size (3 or 4 digits), and this will reduce the value space that will defeat the CVV target somewhat.

Oh, and please don't say you keep CVV? This is very bad: - (

Happy coding.

Answer 2

you need to activate your ccv requirement on your authorize.net test account in the same way on a real account for a real credit card transaction.