Mask Credit Card and keep bank
This function masks valid credit card numbers and keeps the Bank
Identification Number/Issuer Identification Number (BIN/IIN).
The output
value is a valid credit card number.
This function:
- keeps the first six digits,
- masks the other digits and
- generates the last digit using the Luhn algorithm.
Two methods are available: FF1 with AES and FF1 with SHA-2. This function requires no alphabet and no extra parameter.
In the following example, the Keep format check box is selected to preserve the space from the input value.
| Credit card number | Method | Example of masked value |
|---|---|---|
|
4570 5624 6978 6793 |
FF1 with AES |
4570 5678 2786 4430 |
|
374140537770721 |
FF1 with AES |
374140100455098 |
|
5168690988613241 |
FF1 with SHA-2 |
5168699616108078 |
|
5158495805899854 |
FF1 with SHA-2 |
5158494455420285 |
| 0123 4567 8987 6543 210 | FF1 with AES | null |