https://github.com/MaxKramer/ObjectiveLuhn

Luhn Credit Card Validation Algorithm
https://github.com/MaxKramer/ObjectiveLuhn

Last synced: 3 months ago
JSON representation

Luhn Credit Card Validation Algorithm

• Host: GitHub
• URL: https://github.com/MaxKramer/ObjectiveLuhn
• Owner: maxkramer
• License: mit
• Archived: true
• Created: 2012-12-30T01:36:30.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2016-09-13T11:34:46.000Z (about 8 years ago)
• Last Synced: 2024-07-19T07:52:23.498Z (4 months ago)
• Language: Objective-C
• Homepage: http://maxkramer.github.io/ObjectiveLuhn/
• Size: 199 KB
• Stars: 127
• Watchers: 9
• Forks: 20
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-ios - ObjectiveLuhn - Luhn Credit Card Validation Algorithm. (Payments / Other Parsing)
• awesome-ios-star - ObjectiveLuhn - Luhn Credit Card Validation Algorithm. (Payments / Other Parsing)

README

        
Luhn Algorithm

==============

[![Circle CI](https://circleci.com/gh/MaxKramer/ObjectiveLuhn/tree/master.svg?style=shield)](https://circleci.com/gh/MaxKramer/ObjectiveLuhn/tree/master) [![CocoaPods](https://cocoapod-badges.herokuapp.com/v/ObjectiveLuhn/badge.png)](http://cocoapods.org/?q=ObjectiveLuhn)

This is a port of the Luhn Algorithm, generally used for validating Credit Card details, to Objective-C (iOS).

**Swift** port can be found at [https://github.com/MaxKramer/SwiftLuhn](https://github.com/MaxKramer/SwiftLuhn).

It's as simple as calling one single method; no special formatting is required.

You must run `pod install` before opening the Example Project's 'workspace.

## Instructions

Import the header:

```obj-c

#import "Luhn.h"

```

    

Call the class method returning a `BOOL` as to whether the string is valid or not:

```obj-c

BOOL isValid = [Luhn validateString:@"some credit card number"];

    

if (isValid) {

    // process payment   

}

else {

    // alert user

}

```

Alternatively, you can use the NSString category (no additional imports required):

```obj-c

NSString *ccNumber = @"378282246310005";

BOOL isValid = [ccNumber isValidCreditCardNumber];

```

You can also get the type of the credit card i.e. Visa, Diners, Amex, etc:

```obj-c

OLCreditCardType cardType = [ccNumber creditCardType];

// or

OLCreditCardType cardType = [Luhn typeFromString:ccNumber];

```

If you come across any issues or have a feature request, please open an issue or find me on:

Twitter: [@maxkramer](http://twitter.com/maxkramer)

Website: [http://maxkramer.co](http://maxkramer.co)

## Sources

|Name|Website|Reason|

|:---|:------|:-----|

|Paypal|[http://www.paypalobjects.com/en_US/vhelp/paypalmanager_help/credit_card_numbers.htm](http://www.paypalobjects.com/en_US/vhelp/paypalmanager_help/credit_card_numbers.htm)|List of valid credit card numbers for the unit tests|

## Thanks

Ayaka Nonaka for updating the Cocoapod spec and helping me with other aspects of the project!

Twitter: [@ayanonagon](https://twitter.com/ayanonagon)

## License

This project is licensed under the [MIT License](https://github.com/MaxKramer/ObjectiveLuhn/blob/master/LICENSE).