Calculate CVV CVC iCVV CVV2 CVC2 dCVV for Visa Mastercard verification



Calculate CVV/CVC

To calculate the verification values you need the following data:

Enter the 16 or 19 digits card number:

Enter the 4 digit Expiry Date YYMM(EX: 2312):

Enter the 32 hex digits CVV Encryption Key(MDK):

Service code (used for CVV/CVC only):

Application Transaction Counter ATC(used for dCVV only):

CVV/CVC
iCVV
CVV2/CVC2
dCVV




How Card Verification Value
CVV/CVC iCVV CVV2/CVC2 dCVV
calculation for Visa Mastercard works

Documentation - How to calculate CVV - Algorythm

Step 1. Ensure a 2-part 16 byte key. That is 32 hex characters. We will call this "Key"

Step 2. Ensure 16 or 19 digits PAN Card number

Step 3. Ensure 4 characters of Expiration Date

Step 4. Ensure 3 characters of Service Code

Step 5. Concatenate PAN, Expiry date, Service Code

Step 6. Fill with zeroes to the right until you have 32 characters. We will call this "Data"

Step 7. Encrypt (DES) the first half of the data with the first half of the key

Step 8. XOR the result with the second half of Data.

Step 9. Encrypt (DES) the result with the first half of the Key.

Step 10. Decrypt the result with the second half of the key.

Step 11. Encrypt the result with the first half of the key.

Step 12. Get only the digits(numbers) from the result; First 3 are the CVV

ISO8583 Processing Codes for Transaction Processing

List of ISO8583 processing codes, description and use with Video guide and example in the ISO8583 Simulator

Purchase, Witdrawal, Balance Inquiry


ISO8583 Message Types for Transaction Processing

ISO8583 Message Types for Transaction Processing with Video guide and example in the ISO8583 Simulator

Authorizations, Financial, File Updates, Network Management

Add extra custom fields to the ISO8583 simulator

Adding extra, custom fiedls to the ISO8583 simulator in 3 simple steps: Edit the spreadsheet and save, edit the message that reads the test data, alter the ISO8583 message.

ISO8583 Response Codes for Transaction processing

ISO8583 Response Codes for Transaction processing, Video guide - example in the ISO8583 Simulator.

ISO 8583  v1987 v1993 - HISO87 and HISO93 Response codes

Deploy the Payments Switch Router in a test environment

Deploy then neaPay Payments switch router to easily route transactions based on BIN/prefix, amount, merchant, originating or destination insytitution, node.

1. As a container orchestration with Docker-compose

2. As separate services managed as stand-alone.



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