Ecosyste.ms: Awesome

An open API service indexing awesome lists of open source software.

https://github.com/MaxKramer/ObjectiveLuhn

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

Last synced: about 2 months ago
JSON representation

Luhn Credit Card Validation Algorithm

Lists

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).