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# Server to server with Intergiro 3DS

This integration is suitable if you if you want full control over the cardholder browser and the 3DS flow.

POST an authorization creatable to the authorization create endpoint.

In this integration it is required to include the cardholder's browser data in the request. Fields required are ipCountry, colorDepth, java, javascript, locale, timezone, and resolution.

 






















POST /authorization

{
    "number": "abcdef",
    "amount": 7.5,
    "currency": "EUR",
    "card": {
      "pan": "4111111111111111",
      "expires": [2, 22],
      "csc": "987"
    },
    "target": "http://your.example-url.com/",
    "browser": {
      "ipCountry": "SE",
      "colorDepth": 24,
      "java": false, 
      "javascript": true, 
      "locale": "en-GB", 
      "timezone": -120 ,
      "resolution": [1920, 1200]
    }
}

# Authorization Responses

The authorization response can be one of three things:

  1. A "verification required" error response with status 400
  2. A successful authorization, with status 201
  3. An error with reasons of failure.

# 3DS Challenge

If the authorization endpoint returns a "verification required" error, challenge authentication needs to be performed.

A challenge can be initiated by creating a CReq and filling it in with the data received in the verification error response.

{
  "threeDSServerTransID": "d461f105-1792-407f-95ff-9a496fd918a9",
  "acsTransID": "13521d57-581c-44d0-b321-40c58a9cf74e",
  "messageVersion": "2.2.0",
  "messageType": "CReq",
  "challengeWindowSize": "01"
}

The Creq needs to be stringified, then base-64-URL encoded.

Make a POST call through the cardholder's browser to the url specified in the content.details.url field of the verification error. The Content-Type must be application/x-www-form-urlencoded.

POST <3ds url>
Content-Type: application/x-www-form-urlencoded

creq=<base64urlencodedstring>

The response will contain HTML that needs to be rendered in the cardholder's browser.

Once the cardholder finished the challenge, the result (cres) will be sent to the target url provided in the request.

cres=eyJhY3NUcmFuc0lEIjoiODc3OTFjZWUtMjUxNC00MzZjLWJlZDgtYTYzYTg3YmJkZjAxIiwiY2hhbGxlbmdlQ29tcGxldGlvbkluZCI6IlkiLCJtZXNzYWdlVHlwZSI6IkNSZXMiLCJtZXNzYWdlVmVyc2lvbiI6IjIuMS4wIiwidGhyZWVEU1NlcnZlclRyYW5zSUQiOiJkNDFmNjIwMC0wNDM1LTQ5ZWUtYWExMS1mMzY2ZjA2NjFjNmYiLCJ0cmFuc1N0YXR1cyI6IlkifQ

The cres needs to be base64 decoded and added to the verification property of the card:

{
    "type": "challenge",
    "data": <base64decodedcres>
}

Make another request to the authorization endpoint with the updated card. The id in the "verification required" error message from the previous call to the /authorization endpoint needs to be added to the request.

 

































POST /authorization

{
    "id": "5AhKwXsMIlPdU93a", // Id from previous verification required error
    "number": "abcdef",
    "amount": 7.5,
    "currency": "EUR",
    "card": {
      "pan": "4111111111111111",
      "expires": [2, 22],
      "csc": "987",
      "verification": {
        "type": "challenge",
        "data": {
            "threeDSServerTransID": "bf7f81ca-3b1b-4d17-b89f-ff48d0c5b207",
            "acsTransID": "cd1c6325-dbb9-418e-b07d-b0025534f883",
            "transStatus": "Y",
            "messageType": "CRes",
            "messageVersion": "2.1.0"
        }
      }
    },
    "target": "http://your.example-url.com/",
    "browser": {
      "ipCountry": "SE",
      "colorDepth": 24,
      "java": false, 
      "javascript": true, 
      "locale": "en-GB", 
      "timezone": -120 ,
      "resolution": [1920, 1200]
    }
}

← Create authorization →