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Credit card validation with the Luhn algorithm for golang

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durango/go-credit-card

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go-credit-card Build Status Coverage Status GoDoc

Basic credit card validation using the Luhn algorithm

Currently identifies the following credit card companies:

  • American Express
  • Aura
  • Bankcard
  • Cabal
  • China Unionpay
  • Dankort
  • Diners Club Carte Blanche
  • Diners Club enRoute
  • Diners Club International
  • Discover
  • Elo
  • Hipercard
  • InterPayment
  • InstaPayment
  • JCB
  • Maestro
  • MasterCard
  • Naranja
  • Visa
  • Visa Electron

Installation

go get github.com/durango/go-credit-card

Quick Start

// Initialize a new card:
card := creditcard.Card{Number: "4242424242424242", Cvv: "11111", Month: "02", Year: "2016"}

// Retrieve the card's method (which credit card company this card belongs to)
err := card.Method() // card.Company({Short: "visa", Long: "Visa"})

// Display last four digits
lastFour, err := card.LastFour() // 4242

// Validate the card's number (without capturing)
err := card.Validate() // will return an error due to not allowing test cards

err := card.Validate(true) // this will work though

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