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

PCI compliant with neapay switch

PCI compliant with neapay switch. Steps and procedure.

ISO8583 ATM POS Crypto API integration with exchanges like Coinbase or Binance

The payments converter has the capability to convert any payment messages to API requests to exchanges.

Integrate crypto payments or crypto purchase from within your system, ATM or Host for Bitcoin, Ether, and many other cryptocurencies.

Add extra custom fields to the ISO8583 simulator

Adding extra, custom fields 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.

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.

Altering test cases in Excel for the ISO8583 simulator

When you need to customize your own test case, you need to follow some simple steps all the time.
In order to obtain this, you need to alter test data in Excel, save your new test data, export for the simulator, restart simulator with new test cases.

Changing test cases with the neaPay ISO8583 simulator is really easy because you just need to work with Excel.

Read related articles - Iso8583

PCI compliant with neapay switch

PCI compliant with neapay switch. Steps and procedure.

ISO8583 ATM POS Crypto API integration with exchanges like Coinbase or Binance

The payments converter has the capability to convert any payment messages to API requests to exchanges.

Integrate crypto payments or crypto purchase from within your system, ATM or Host for Bitcoin, Ether, and many other cryptocurencies.

Add extra custom fields to the ISO8583 simulator

Adding extra, custom fields 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.

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.

Altering test cases in Excel for the ISO8583 simulator

When you need to customize your own test case, you need to follow some simple steps all the time.
In order to obtain this, you need to alter test data in Excel, save your new test data, export for the simulator, restart simulator with new test cases.

Changing test cases with the neaPay ISO8583 simulator is really easy because you just need to work with Excel.

Deploy the neaPay ISO8583 Payments converter in a test environment

When you receive a delivery from neaPay for an iso8583 convertor, you will get 1 zip file.

This step by step guide will guide you through the deployment process, which is as simple as using the software.

1: use/deploy java 8;

2: unpack delivered convertor;

3: start server;

4: start client;

5: run transaction

Changing fields definitions in the ISO8583 simulator and message converter

In this post we explain how to change individual fields settings so they match your specification. All configurable via GUI or by altering the configuration files directly.

Method 1. Alter settings via UI (User Interface)

Method 2. Alter settings via configuration files. This is great for versioning of settings.

How the fingerprint reader works in the ISO8583 payments simulator

Step by step guide to enable and disable fingerprint reading, enrollment and verification.

EMV explained for programmers

The short and direct programmer's guide to deal with EMV data. How to parse and what it is.

Brief explanation of EMV Chip Data from the card

What is EMV? EMV stands for Europay, MasterCard, Visa, abbreviation, the companies that founded them. Now it is owned by an association of many such institutions. More details on EMV for programmers

Where is EMV? EMV data is in the chip of the card.EMV CHIP terms

How do you read EMV? EMV data is read from the card via some APDU commands which retrieve EMV data. APDU commands info

What EMV data do you need? Name, card number, expiration and usually the tags for building the cryptogram

Where do you use it? You use it to populate Field 55 in the ISO 8583 message. Details on iso8583 for programmers

How do you use EMV data? Field 55 is a TLV field (tag-length-value). You can decode it with our EMV TLV decoder

Are you ready to start or need help?

Ready to start your next project with us? Give us a call or send us an email and we will get back to you as soon as possible!

Calculate CVV CVC iCVV CVV2 CVC2 dCVV for Visa Mastercard verification