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Cardidy is a .net library to identify credit card number and cvv. Maintained by folks at D-EDGE.

Features

  • Easy to use
  • Easy to extend
  • Easy to maintain (Regex-free)
  • Up-to-date with Wikipedia
  • Check with the Luhn's algorithm
  • Can check for Cvv
  • Can guess anonymized credit card
  • Can guess truncated creditcard card
  • Support for Visa credit card
  • Support for Jcb credit card
  • Support for Amex credit card
  • Support for Discover credit card
  • Support for MasterCard credit card
  • Support for more...

Getting Started as library

Install the DEdge.Cardidy NuGet package:

PM> Install-Package DEdge.Cardidy

Alternatively you can also use the .NET CLI to add the packages:

dotnet add package DEdge.Cardidy

Next create a .net application and use DEdge.Cardidy:

var card = DEdge.Cardidy.Identify("4127540509730813").Single();
Console.WriteLine(card); // print Visa

or in F#:

open System

[<EntryPoint>]
let main _ =
    let isVisa = DEdge.Cardidy.Identify "4127540509730813" |> Seq.head = DEdge.CardType.Visa
    printfn "%b" isVisa
    0

Getting Started working on Cardidy

Let's go 😄

Note

The library mostly follows the Wikipedia's page: Payment card number. On Cardidy, we made some modifications though:

  • Diners Club International is known as Diners Club

License

MIT