AutoIt

ABN AMRO Create Signed JSON Web Token

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

Local $bSuccess = 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)
$oRsa = ObjCreate("Chilkat.Rsa")

; Generate a 2048-bit key.
$oPrivkey = ObjCreate("Chilkat.PrivateKey")
$bSuccess = $oRsa.GenKey(2048,$oPrivkey)
If ($bSuccess = False) Then
    ConsoleWrite($oRsa.LastErrorText & @CRLF)
    Exit
EndIf

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

$oPubkey = ObjCreate("Chilkat.PublicKey")
$oPrivkey.ToPublicKey($oPubkey)
$bSuccess = $oPubkey.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.
$oJwt = ObjCreate("Chilkat.Jwt")

; Create the header:
; {
;     "typ": "JWT",
;     "alg": "RS256"
; }
$oJsonHeader = ObjCreate("Chilkat.JsonObject")
$oJsonHeader.UpdateString("typ","JWT")
$oJsonHeader.UpdateString("alg","RS256")

; Create the payload:
; {
;     "nbf": 1499947668,
;     "exp": 1499948668,
;     "iss": "me",
;     "sub": "anApiKey",
;     "aud": "https://auth-sandbox.abnamro.com/oauth/token"
; }
$oJsonPayload = ObjCreate("Chilkat.JsonObject")

Local $iCurDateTime = $oJwt.GenNumericDate(0)

; Set the "not process before" timestamp to now.
$bSuccess = $oJsonPayload.AddIntAt(-1,"nbf",$iCurDateTime)

; Set the timestamp defining an expiration time (end time) for the token
; to be now + 1 hour (3600 seconds)
$bSuccess = $oJsonPayload.AddIntAt(-1,"exp",$iCurDateTime + 3600)

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

; Produce the smallest possible JWT:
$oJwt.AutoCompact = True

Local $sJwtStr = $oJwt.CreateJwtPk($oJsonHeader.Emit(),$oJsonPayload.Emit(),$oPrivkey)
If ($oJwt.LastMethodSuccess = False) Then
    ConsoleWrite($oJwt.LastErrorText & @CRLF)
    Exit
EndIf

; Here is the JWT:
ConsoleWrite($sJwtStr & @CRLF)