README.MD

erlcard

Validates popular debit and credit cards numbers against regular expressions and Luhn algorithm. The library also validates the CVC code.

Installation

Add erlcard as a rebar or rebar3 dependency to your project:

{deps, [
  {erlcard, ".*", {git, "https://github.com/silviucpp/erlcard.git", "master"}},
}.

Usage

All available types that can be validated are available in erlcard.hrl :

-define(CARD_TYPE_AMEX, amex).
-define(CARD_TYPE_DANKORT, dankort).
-define(CARD_TYPE_DINERSCLUB, dinersclub).
-define(CARD_TYPE_DISCOVER, discover).
-define(CARD_TYPE_FORBRUGSFORENINGEN, forbrugsforeningen).
-define(CARD_TYPE_JCB, jcb).
-define(CARD_TYPE_MAESTRO, maestro).
-define(CARD_TYPE_MASTERCARD, mastercard).
-define(CARD_TYPE_UNIONPAY, unionpay).
-define(CARD_TYPE_VISA, visa).
-define(CARD_TYPE_VISAELECTRON, visaelectron).

Validate a card number knowing the type

{ok, <<"5500005555555559">>, mastercard} = erlcard:valid_credit_card(<<"5500005555555559">>, mastercard).

Validate a card number without knowing the type

{ok, <<"5500005555555559">>, mastercard} = erlcard:valid_credit_card(<<"5500005555555559">>).

Validate the CVC

true = erlcard:valid_cvc(<<"123">>, visa).

Tests

You can run the tests using make ct from root directory.