Java 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. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Jwt;
import com.chilkatsoft.chilkat2.PrivateKey;
import com.chilkatsoft.chilkat2.PublicKey;
import com.chilkatsoft.chilkat2.Rsa;

public class ChilkatExample {

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

        // Create public/private key pair (RSA)
        Rsa rsa = new Rsa();

        // Generate a 2048-bit key.
        PrivateKey privkey = new PrivateKey();
        try {
            rsa.genKey(2048, privkey);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            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");

        PublicKey pubkey = new PublicKey();
        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.
        Jwt jwt = new Jwt();

        // Create the header:
        // {
        //     "typ": "JWT",
        //     "alg": "RS256"
        // }
        JsonObject jsonHeader = new JsonObject();
        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"
        // }
        JsonObject jsonPayload = new JsonObject();

        int 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.setAutoCompact(true);

        String jwtStr;
        try {
            jwtStr = jwt.createJwtPk(jsonHeader.emit(), jsonPayload.emit(), privkey);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Here is the JWT:
        System.out.println(jwtStr);
    }
}