Xbase++ 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. Xbase++

LOCAL nSuccess
LOCAL oRsa
LOCAL oPrivkey
LOCAL oPubkey
LOCAL oJwt
LOCAL oJsonHeader
LOCAL oJsonPayload
LOCAL nCurDateTime
LOCAL cJwtStr

nSuccess := 0

//  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 := CreateObject("Chilkat.Rsa")

//  Generate a 2048-bit key.
oPrivkey := CreateObject("Chilkat.PrivateKey")
nSuccess := oRsa:GenKey(2048, oPrivkey)
IF (nSuccess == 0)
    ? oRsa:LastErrorText
    oRsa:destroy()
    oPrivkey:destroy()
    RETURN
ENDIF

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

oPubkey := CreateObject("Chilkat.PublicKey")
oPrivkey:ToPublicKey(oPubkey)
nSuccess := oPubkey:SavePemFile(1, "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 := CreateObject("Chilkat.Jwt")

//  Create the header:
//  {
//      "typ": "JWT",
//      "alg": "RS256"
//  }
oJsonHeader := CreateObject("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 := CreateObject("Chilkat.JsonObject")

nCurDateTime := oJwt:GenNumericDate(0)

//  Set the "not process before" timestamp to now.
nSuccess := oJsonPayload:AddIntAt(-1, "nbf", nCurDateTime)

//  Set the timestamp defining an expiration time (end time) for the token
//  to be now + 1 hour (3600 seconds)
nSuccess := oJsonPayload:AddIntAt(-1, "exp", nCurDateTime + 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 := 1

cJwtStr := oJwt:CreateJwtPk(oJsonHeader:Emit(), oJsonPayload:Emit(), oPrivkey)
IF (oJwt:LastMethodSuccess == 0)
    ? oJwt:LastErrorText
    oRsa:destroy()
    oPrivkey:destroy()
    oPubkey:destroy()
    oJwt:destroy()
    oJsonHeader:destroy()
    oJsonPayload:destroy()
    RETURN
ENDIF

//  Here is the JWT:
? cJwtStr

oRsa:destroy()
oPrivkey:destroy()
oPubkey:destroy()
oJwt:destroy()
oJsonHeader:destroy()
oJsonPayload:destroy()