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REST API | American Express

In-App Transactions Using the
Cybersource
 API and Decryption

Cybersource illustration
  1. When the customer chooses to pay with Apple Pay, you use the Apple PassKit Framework to request the encrypted payment data from Apple.
  2. Apple uses the Secure Element to create a payment token and encrypt the token’s payment data before it sends your application.
    The payment token is the
    PKPaymentToken
     structure.
    The payment data is the
    paymentData
     field of the
    PKPaymentToken
     structure.
  3. You forward the encrypted payment data to your order management system.
  4. Using the
    Cybersource
     API, you submit the authorization request. In the
    paymentInformaton.fluidData.value
     field, include the Base64-encoded value obtained from the
    paymentData
     field of the
    PKPaymentToken
     structure.
  5. Cybersource
     decrypts the payment data and forwards the information to the payment network, which includes your processor and the relevant payment card company.
    IMPORTANT
    You must use the Business Center or one of the
    Cybersource
     API services to capture, credit, or void the authorization. Refer to the
    Credit Card Services
     guide (see Related information below) for information.