Apple Pay Token交易金额不正确

Question

Apple Pay token包含错误的transactionAmount信息。例如，如果交易金额为1.10美元，在iOS设备上，Apple Pay屏幕剧照显示正确的金额，但paymentToken解密后返回110

我使用这个库使用我自己的公-私钥对解密Apple Pay令牌

class ViewController: UIViewController {
...
 @IBAction func payBtn(_ sender: UIButton) {
        do {
            let paymentItem = PKPaymentSummaryItem.init(label: "Test item", amount: NSDecimalNumber(value: 1.10))
            let paymentNetworks = [PKPaymentNetwork.amex, .discover, .masterCard, .visa]

            if PKPaymentAuthorizationViewController.canMakePayments(usingNetworks: paymentNetworks) {

                let request = PKPaymentRequest()
                request.currencyCode = "SGD" // 1
                request.countryCode = "SG" // 2
                request.merchantIdentifier = "merchant.com.xxxxx" // 3
                request.merchantCapabilities = PKMerchantCapability.capability3DS // 4
                request.supportedNetworks = paymentNetworks // 5
                request.paymentSummaryItems = [paymentItem] // 6

                guard let paymentVC = PKPaymentAuthorizationViewController(paymentRequest: request) else {
                    displayDefaultAlert(title: "Error", message: "Unable to present Apple Pay authorization.")
                    return
                }

                paymentVC.delegate = self
                self.present(paymentVC, animated: true, completion: nil)

            } else {
                displayDefaultAlert(title: "Error", message: "Unable to make Apple Pay transaction.")
            }
        } catch {
            print(error.localizedDescription)
        }

    }
}

extension ViewController: PKPaymentAuthorizationViewControllerDelegate {
    func paymentAuthorizationViewControllerDidFinish(_ controller: PKPaymentAuthorizationViewController) {
        dismiss(animated: true, completion: nil)
    }
    func paymentAuthorizationViewController(_ controller: PKPaymentAuthorizationViewController, didAuthorizePayment payment: PKPayment, handler completion: @escaping (PKPaymentAuthorizationResult) -> Void) {

        let token = String(data: payment.token.paymentData, encoding: .utf8)
        let utf8str = token!.data(using: .utf8)

        if let base64Encoded = utf8str?.base64EncodedString()
        {
            print("Encoded:  \(base64Encoded)")

            //Send token to backend server to decrypt
        }
    }
}

Answer 1

新元的最小单位是美分，是一美元的1/100。因此，我需要将美元金额转换为分整数乘以100。然后，在发送到Adyen时使用此值