Server-side Payment Token decryption for Apple Pay

Question

There are third party libraries that provide support for decrypting Apple Pay token on the server side. Is there any such .NET library?

Third-paty Libraries

Ruby library for decrypting Apple Pay payment tokens

PHP library for decrypting Apple Pay payment tokens

What we're trying to accomplish

We're using Compass XML platform for payment processing, and the goad is to decrypt the payment token on our server and then use the Compass XML for final payment processing.

Answer 1

I just pushed my works into github, it uses Bouncy Castle C# library to decrypt token on the server side, and works both for Android Pay and Apple Pay, please check it out.

https://github.com/chengbo/ApplePayAndroidPayDecryption

NOTE: The token verification for Apple Pay not implement yet.

Answer 2

I don't know of any .net libraries specifically, but there's a number of implementations available on GitHub that you could take a look at - here's another PHP one, for example: https://github.com/etsy/applepay-php

Payment decryption is fairly straightforward if you're familiar with crypto, and is achievable using something like OpenSSL. There's some documentation on the exact process here:

https://developer.apple.com/library/ios/documentation/PassKit/Reference/PaymentTokenJSON/PaymentTokenJSON.html

Answer 3

I got it working in C# by creating a fork of a project and cleaning it up. Here is the Github location:

https://github.com/fscopel/CSharpApplePayDecrypter