Module to calculate and validate check digits for redundancy checking, using f.ex. mod10 (luhn algorithm) or mod11.
Can generate valid credit card numbers for VISA, Amex, Mastercard, Diners, Discover, EnRoute, JCB, Voyager
Calculate the check digit(mod10 algorithm)
A Luhn (mod 10) algorithm module for credit card number validation.
Correctly identifies cards from VISA, Amex, Mastercard, Diners, Discover, JCB, Switch, Solo, Dankort, Maestro, Forbrugsforeningen, Laser.