emodus / go-cards-validation

Card validation with the Luhn algorithm for golang

Basic credit card validation using the Luhn algorithm

Currently identifies the following credit card companies:

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

Installation

go get github.com/sgumirov/go-cards-validation

Attribution

This library based on original one : https://github.com/hubcash/cards . Changes include but not limited to:

• security fixes

See commit history for a full list.

Quick Start

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

// Retrieve the card's brand (which credit card company this card belongs to)
err := card.Brand() // card.Brand({Code: "visa", Name: "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