Credit Card Magnetic Stripe Parser

Library for parsing magnetic stripe track data of credit cards

NuGet CreditCardStripeParser Package

A simple .Net Standard parser with following functionality:

• Parse whole magnetic stripe from a card reader
• Parse whole magnetic stripe with LRC codes after Track 1 or Track 2
• Separately validate and parse Track 1, Track 2
• Calculate and validate LRC to confirm the integrity of the data

Models

    /// <summary>
    /// ISO 7811-2 track one character encoding definition:
    /// SS FC PAN FS Name FS Date Discretionary Data ES LRC
    /// </summary>
 public class TrackOneModel
    {
        public char FormatCode { get; set; }
        public string PAN { get; set; }
        public string CardHolderName { get; set; }
        public string ExpirationDate { get; set; }
        public string ServiceCode { get; set; }
        public string DiscretionaryData { get; set; }
        public string SourceString { get; set; }
    }
    
     /// <summary>
     /// ISO 7811-2 Track Two encoding definition:
     /// SS PAN FS Date SVC CD Discretionary Data ES LRC
     /// </summary>
    public class TrackTwoModel
    {
        public string PAN { get; set; }
        public string ExpirationDate { get; set; }
        public string ServiceCode { get; set; }
        public string DiscretionaryData { get; set; }
        public string SourceString { get; set; }

    }
    
     public class FullTrackDataModel
    {
        public bool IsTrackOneValid { get; set; }
        public TrackOneModel TrackOne { get; set; }
        public bool IsTrackTwoValid { get; set; }
        public TrackTwoModel TrackTwo { get; set; }
    }
}

Example Code:

private String _testFullTrack = "%B5168755544412233^PKMMV/UNEMBOXXXX       ^1807111100000000000000111000000?;5168755544412233=18071111000011100000?";
 var result = new FullTrackParser().ParseTrackOne(_testFullTrack);

will be parsed into a model:

TrackOneModel testTrack1 = new TrackOneModel
          {
              FormatCode = 'B',
              PAN = "5168755544412233",
              CardHolderName = "PKMMV/UNEMBOXXXX          ",
              ExpirationDate = "1807",
              ServiceCode = "111",
              DiscretionaryData = "100000000000000111000000",
              SourceString = "B5168755544412233^PKMMV/UNEMBOXXXX          ^1807111100000000000000111000000"
          };