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I'm looking for a definition of algorithm how to calculate CVV/CVC codes?
I know that there are the following inputs:
- PAN Expiration
- Service Code
- CVK A/B
But I'm not able to find the specific algorithm definition what should be done exactly to get the 3 digit CVV/CVC code. Is there a documentation somewhere in VISA/Mastercard?
To be clear, I'm not looking into how to forge their existing cards, I would like to calculate code using my own test keys.