Google Pay allows customers to make secure payments without manually entering card details. It is supported on Android devices and Chrome browsers, providing a seamless checkout experience. Merchants can integrate Google Pay in an H2H setup, where they transmit payment data directly from Google Pay API responses to Solidgate for processing.

Google Pay tokens contain encrypted card information stored within a customer’s digital wallet and let you securely pass your customers’ data to process payments. The approach to decrypting these tokens depends on whether merchants are PCI DSS-compliant or not. If PCI DSS-compliant, they can handle the token decryption and pass raw card details to Solidgate.

Let Solidgate handle decryption

Solidgate can handle the token decryption if you are not PCI DSS-compliant. Once a payment is initiated, your application or website will receive a Google Pay token, which you must include in the Google Pay API payment request.

For this to work, you need:

• Integration with Solidgate
• Integration with Google:
  • Web application
  • Android application
• Google Pay Merchant ID, obtained after verification in the Google Pay & Wallet Console

Payment flow

For further information about payment parameters, refer to the Google Pay API method.

Handle decryption on your side

If you are PCI DSS-compliant, you can decrypt Google Pay tokens on your side. For that, you will also need to:

• Have a Google Pay merchant ID
• Have a H2H integration
• Follow Google’s guidelines to decrypt the token

To decrypt Google Pay tokens, take the steps described on the Google developer portal. This involves using a cryptographic key and ensuring that sensitive data is securely processed.

Payment flow

The use of is_decrypted: true implies that the data sent is decrypted and this parameter defines the required fields in the request.

If is_decrypted: true , the request must:

• include the decrypted_data object
• specify either ECv1 or ECv2 for protocolVersion, which determines parameter validation in decrypted_data
• specify type: auth and:
  • force3ds: true , false , or null if paymentMethod: CARD (ECv1) or authMethod: PAN_ONLY (ECv2)
  • force3ds: false or null if paymentMethod: TOKENIZED_CARD (ECv1) or authMethod: CRYPTOGRAM_3DS (ECv2)
• exclude signature and signedMessage

Example with protocolVersion: ECv1 and paymentMethod: CARD :

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{
  "is_decrypted": true,
  "decrypted_data": {
    "gatewayMerchantId": "your-public-api-key",
    "messageExpiration": "1507738377032",
    "messageId": "AH2EjtcHYs1Ye-ZIZuZXd7eNO4QjQfZjBDtP2ti0tob_a5o22lHmGWHsBVYrrSylkFC3ZTsRdvMadQpwOGCIl7XxhTKcfElmgF7UFbcI8CeUZCWRmbTH5s7h69Baqr4FAM735VNThPiP",
    "paymentMethod": "CARD",
    "paymentMethodDetails": {
      "pan": "4895370012003478",
      "expirationMonth": "12",
      "expirationYear": 2028
    }
  },
  "protocolVersion": "ECv1"
}