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VISA Platform Connect: Specifications and Conditions for Resellers/Partners

Flex API
- Establish a Payment Session with a Capture Context
  - REST Example: Establishing a Payment Session with a Capture Context
- Validate the JSON Web Token
  - Retrieve the Public Key ID
  - Retrieve the Public Key
  - JAVA Example: Validating the Transient Token
- Populate the JSON Web Token with Customer Information
  - Constructing the JSON Payload
  - Generate a JWE (JSON Web Encryption) Data Object
  - Populate the Token Request

Processing Authorizations with a Transient Token
- Authorization with a Transient Token
  - Required Fields for an Authorization with a Transient Token
  - REST Interactive Example: Authorization with a Transient Token
  - REST Example: Authorization with a Transient Token
- Authorization and Creating TMS Tokens with a Transient Token
  - Required Fields for an Authorization and Creating TMS Tokens with a Transient Token
  - REST Interactive Example: Authorization and Creating TMS Tokens with a Transient Token
  - REST Example: Authorization and Creating TMS Tokens with a Transient Token

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REST API

`Unified Checkout` Flow

The integration flow consists of two events that must occur in order.

You send a server-to-server request for a capture context. This request is fully authenticated for the JSON Web Token (JWT) and is necessary in order to invoke the front-end JavaScript library.

You invoke the Unified Checkout JavaScript library using the JWT response from the capture context request.

The figure below illustrates the Unified Checkout payment flow.

Diagram that shows the sequence and flow of a Unified Checkout payment. — Unified Checkout Payment Flow

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