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

• git clone git@github.com:d-edge/Cardidy.git
• cd Cardidy
• dotnet test

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