Repository files navigation

CCNumGen is a Python 3.9 class that uses theLuhn Algorithm to generate theoretically valid credit card numbers with CVV and expiration dates.

• It can generate Amex, Discover, MC, Visa 13, and Visa 16 cards.
• It generates 3 or 4 digit CVV numbers, depending on the card type.
• It generates an expiration date that is 1 to 3 years from today.
• It prints each card to the console.
• It captures cards in a list of dictionaries.

Adapted from:https://stackoverflow.com/questions/59232327/python-how-to-always-generate-valid-luhn-numbers

These are theoretical cards meant for testing the pre-checks that happen on a payment screen before payment is submitted. This utility does not generate real-world card information. For example, real CSV numbers are generated using an algorithm tied to the card number and other data points - something this utility can't do.

Sometimes for testing you need card numbers with specific prefixes.CCNumGen is easy to extend.

• Name the new card type in theCCNumGen class ->card_types list.
• Define the new card in theCC class ->CCDATA dictionary.

CCNumGen generates 5 types of cards. The second argument is the number of cards to generate.

amex = CCNumGen('amex', 2)discover = CCNumGen('discover', 2)mc = CCNumGen('mc', 2)visa13 = CCNumGen('visa13', 2)visa16 = CCNumGen('visa16', 2)

Each card is printed to the console.

---------------------------Type: amexNumber: 372672737435387CVV: 8483Exp: 09-2025---------------------------Type: discoverNumber: 60019219645956610CVV: 892Exp: 05-2023---------------------------Type: mcNumber: 5169546719828815CVV: 678Exp: 03-2023---------------------------Type: visa13Number: 4929291332548CVV: 328Exp: 08-2025---------------------------Type: visa16Number: 4165317319538881CVV: 106Exp: 05-2024---------------------------

Each card is stored in a list of dictionaries.

[  {    'cc_type': 'mc',     'cc_num': '5538992865196249',     'cc_cvv': '617',     'cc_exp': '09-2024'  },   {    'cc_type': 'mc',     'cc_num': '5191748311982485',     'cc_cvv': '434',     'cc_exp': '11-2023'    }]

To access the list directly:

print(amex.card_list)print(discover.card_list)print(mc.card_list)print(visa13.card_list)print(visa16.card_list)

To print the list to console:

amex.print_card_list()discover.print_card_list()mc.print_card_list()visa13.print_card_list()visa16.print_card_list()

Other names:

• CSC - Card Security Code
• CID - Card Identification Number
• CVC2 - Card Verification Code
• CVV2 - Card Verification Value

What is it?

• An anti-fraud measure used by CC companies worldwide.
• A 3 or 4 digit number printed on the physical card - and not embossed.
• Used for Card Not Present (CNP) transactions.
• Different from the CVV1 that's encoded on track 2 of the magnetic strip - this is used for Card Present Transactions (CPT).

Generated with DES encryption using:

• Pair of DES keys (CVKs)
• Primary Account Number (PAN)
• 4-digit Expiration Date.
• 3-digit Service Code.
• Other data

Amex:

• Does have a 3 digit CID code on back of card.
• Uses the 4 digit CVV number on front of card for CNP transactions.