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Showing posts with label generator. Show all posts
Showing posts with label generator. Show all posts

Payment Card Number Validation


A payment card is a device that enables its owner (the cardholder) to make a payment by electronic funds transfer. The most common types of payment cards are credit cards and debit cards. Payment cards are usually embossed plastic cards, 85.60 × 53.98 mm in size, which comply with the ISO/IEC 7810 ID-1 standard. They usually also have an embossed card number conforming with the ISO/IEC 7812 numbering standard.

ref: https://en.wikipedia.org/wiki/Payment_card

Today there are many types of cards (payment / credit), there is one of simple way to test the card number, whether valid / invalid, using the Luhn algorithm. Matching publisher network can also be done if it had known the data of the card's issuer networking.




What goal?
○ Check/validate Card Number based on Luhn Algorithm.
○ Check Type, Issuer, Active.
○ Random Card Number Generator Simulation.
○ For Learning Purpose.


Main Class for PayCard Checker

Source Code 

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using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq; // .Net Framework 4.0

namespace TechScales
{ 
    internal class PayCardEngine
    {
        ~PaymentCardEngine()
        {
            if (Cards != null && Cards.Count > 0) { Cards.Clear(); Cards = null; }
            GC.Collect();
            GC.WaitForPendingFinalizers();
        }
        internal enum CardType
        {
            Unidentify = -1,
            AmericanExpress = 0,
            Bankcard,
            ChinaUnionPay,
            DinersClubCarteBlanche,
            DinersClubenRoute,
            DinersClubInternational,
            DinersClubUSA_Canada,
            DiscoverCard,
            InterPayment,
            InstaPayment,
            JCB,
            Laser,
            Maestro,
            Dankort,
            NSPKMIR,
            MasterCard,
            Solo,
            Switch,
            Visa,
            UATP,
            Verve,
            CardguardEadbGils,
        }
        internal enum Active
        {
            Undefined = -1,
            No = 0,
            Yes = 1,
        }
        internal enum Checker
        {
            None = 0,
            Luhn = 1,
        }
        internal class ValidThrough
        {
            public ValidThrough(int month, int year)
            {
                Month = month; Year = year;
            }
            public int Month
            {
                get;
                set;
            }
            public int Year
            {
                get;
                set;
            }
            public override string ToString()
            {
                return string.Concat(Month, "/", (Year % 1000));
            }
        }
        internal static void ResetCardsData()
        {
            if (Cards != null)
            {
                Cards.Clear(); Cards = null;
            }
            Cards = new List<PayCard>();
        }
        static List<PayCard> Cards { get; set; }

        internal class PayCard
        {
        }
    }
}

Card Type, can be added within enum PayCardEngine.CardType after line41. Card Type also can be taken uniquely from added card data network. Class PayCard will described in here.

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