Java

Create JWT using a Certificate's Private Key

See more JSON Web Token (JWT) Examples

Demonstrates how to create a JWT using a certificate's private key. Chilkat2 Java

import com.chilkatsoft.chilkat2.Cert;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Jwt;

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.

        // Demonstrates how to create a JWT using an certificate's private key.

        Cert cert = new Cert();

        // Load an ECC private key from a PEM file.
        try {
            cert.loadPfxFile("c:/temp/myPfx.pfx", "pfxPassword");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        Jwt jwt = new Jwt();

        // Build the JOSE header
        JsonObject jose = new JsonObject();
        // Note: The IsEcdsa function was added in Chilkat v10.1.0
        if (cert.isEcdsa()) {
            // Use ES256.  Pass the string "ES384" or "ES512" to use ECC with SHA-384 or SHA-512.
            jose.appendString("alg", "ES256");
        } else {
            // Probably RSA...
            // Use RS256.  Pass the string "RS384" or "RS512" to use RSA with SHA-384 or SHA-512.
            jose.appendString("alg", "RS256");
        }

        jose.appendString("typ", "JWT");

        // Now build the JWT claims (also known as the payload)
        JsonObject claims = new JsonObject();
        claims.appendString("iss", "http://example.org");
        claims.appendString("sub", "John");
        claims.appendString("aud", "http://example.com");

        // Set the timestamp of when the JWT was created to now.
        int curDateTime = jwt.genNumericDate(0);
        claims.addIntAt(-1, "iat", curDateTime);

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

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

        // Produce the smallest possible JWT:
        jwt.setAutoCompact(true);

        // Create the JWT token.
        String token = jwt.createJwtCert(jose.emit(), claims.emit(), cert);

        System.out.println(token);

        // Example output:
        // eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJodHRwOi8vZXhhbXBsZS5vcmciLCJzdWIiOiJKb2huIiwiYXVkIjoiaHR0cDovL2V4YW1wbGUuY29tIiwiaWF0IjoxNDg1NzA4NzkyLCJuYmYiOjE0ODU3MDg3OTIsImV4cCI6MTQ4NTcxMjM5Mn0.wqsuyJpxJ073ox-lOiLFqG1lQocXe4hGf2XGZJRrO3qn0UusxI_bu3Gzky8gBsH4sA4u9TWZn5M-1wYMMIJk6Q
    }
}