Dart 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. Dart

import 'package:chilkat/chilkat.dart';

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

  // Create public/private key pair (RSA)
  final rsa = CkRsa();

  // Generate a 2048-bit key.
  final privkey = CkPrivateKey();
  try {
    rsa.genKey(2048, privkey);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Export the key to PEM files.
  // Write one PEM file for the private key, and one for the public key.
  privkey.savePemFile('qa_data/pem/abnAmroPrivateKey.pem');

  final pubkey = CkPublicKey();
  privkey.toPublicKey(pubkey);
  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.
  final jwt = CkJwt();

  // Create the header:
  // {
  //     "typ": "JWT",
  //     "alg": "RS256"
  // }
  final jsonHeader = CkJsonObject();
  jsonHeader.updateString('typ', 'JWT');
  jsonHeader.updateString('alg', 'RS256');

  // Create the payload:
  // {
  //     "nbf": 1499947668,
  //     "exp": 1499948668,
  //     "iss": "me",
  //     "sub": "anApiKey",
  //     "aud": "https://auth-sandbox.abnamro.com/oauth/token"
  // }
  final jsonPayload = CkJsonObject();

  final curDateTime = jwt.genNumericDate(0);

  // Set the "not process before" timestamp to now.
  jsonPayload.addIntAt(-1, 'nbf', curDateTime);

  // Set the timestamp defining an expiration time (end time) for the token
  // to be now + 1 hour (3600 seconds)
  jsonPayload.addIntAt(-1, 'exp', curDateTime + 3600);

  jsonPayload.updateString('iss', 'me');
  jsonPayload.updateString('sub', 'anApiKey');
  jsonPayload.updateString('aud', 'https://auth-sandbox.abnamro.com/oauth/token');

  // Produce the smallest possible JWT:
  jwt.autoCompact = true;

  final String jwtStr;
  try {
    jwtStr = jwt.createJwtPk(jsonHeader.emit(), jsonPayload.emit(), privkey);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Here is the JWT:
  print(jwtStr);
}