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payment-data-cryptography-dotnet's Introduction

Google Pay - payment data cryptography in C#

Overview

.NET idiomatic library that performs the steps outlined in Payment data cryptography. It allows you to decrypt and verify a PaymentMethodToken object generated by the Google Pay API. It supports versions ECv1 and ECv2.

Internally, it relies on Bouncy Castle C# and has no other external dependencies.

Sample use

// To use INSTANCE_TEST, set the parameter to true
var keyProvider = new GooglePay.PaymentDataCryptography.GoogleKeyProvider(false);
var parser = new GooglePay.PaymentDataCryptography.PaymentMethodTokenRecipient("merchant:YOUR_MERCHANT_ID", keyProvider);
parser.AddPrivateKey(PrivateKey1);
parser.AddPrivateKey(PrivateKey2);
string decryptedMessage = parser.Unseal(encryptedMessage);

Disclaimer

This is not an official Google product.

Tink is the library actively maintained and supported by the Google Pay team. Using Tink to perform payment data cryptography for Google Pay is highly recommended.

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