Xojo Plugin Requires Chilkat v11.0.0+

ABN AMRO Create Signed JSON Web Token

See more ABN AMRO Examples

Demonstrates how to create a signed JWT to be used for authenticating requests to the ABN AMRO REST API's. Xojo Plugin

Dim success As Boolean
success = False

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  Create public/private key pair (RSA)
Dim rsa As New Chilkat.Rsa

//  Generate a 2048-bit key.
Dim privkey As New Chilkat.PrivateKey
success = rsa.GenKey(2048,privkey)
If (success = False) Then
    System.DebugLog(rsa.LastErrorText)
    Return
End If

//  Export the key to PEM files.
//  Write one PEM file for the private key, and one for the public key.
success = privkey.SavePemFile("qa_data/pem/abnAmroPrivateKey.pem")

Dim pubkey As New Chilkat.PublicKey
success = privkey.ToPublicKey(pubkey)
success = pubkey.SavePemFile(True,"qa_data/pem/abnAmroPublicKey.pem")
//  Note: Please share your public key along with your app name and developer email id at api.support@nl.abnamro.com. 
//  Token generation will not work unless public key is associated with your app.

//  Create the JWT.
Dim jwt As New Chilkat.Jwt

//  Create the header:
//  {
//      "typ": "JWT",
//      "alg": "RS256"
//  }
Dim jsonHeader As New Chilkat.JsonObject
success = jsonHeader.UpdateString("typ","JWT")
success = jsonHeader.UpdateString("alg","RS256")

//  Create the payload:
//  {
//      "nbf": 1499947668,
//      "exp": 1499948668,
//      "iss": "me",
//      "sub": "anApiKey",
//      "aud": "https://auth-sandbox.abnamro.com/oauth/token"
//  }
Dim jsonPayload As New Chilkat.JsonObject

Dim curDateTime As Int32
curDateTime = jwt.GenNumericDate(0)

//  Set the "not process before" timestamp to now.
success = jsonPayload.AddIntAt(-1,"nbf",curDateTime)

//  Set the timestamp defining an expiration time (end time) for the token
//  to be now + 1 hour (3600 seconds)
success = jsonPayload.AddIntAt(-1,"exp",curDateTime + 3600)

success = jsonPayload.UpdateString("iss","me")
success = jsonPayload.UpdateString("sub","anApiKey")
success = jsonPayload.UpdateString("aud","https://auth-sandbox.abnamro.com/oauth/token")

//  Produce the smallest possible JWT:
jwt.AutoCompact = True

Dim jwtStr As String
jwtStr = jwt.CreateJwtPk(jsonHeader.Emit(),jsonPayload.Emit(),privkey)
If (jwt.LastMethodSuccess = False) Then
    System.DebugLog(jwt.LastErrorText)
    Return
End If

//  Here is the JWT:
System.DebugLog(jwtStr)