Dart

Create JWT Using Ed25519 Private Key (EdDSA)

See more JSON Web Token (JWT) Examples

Demonstrates how to create a JWT using an Ed25519 private key. If the private key is Ed25519, which is an EdDSA algorithm, the JOSE header's "alg" member should be set to "EdDSA".

Note: This example requires Chilkat v9.5.0.95 or greater.

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.

  // Demonstrates how to create a JWT using an Ed25519 private key.

  final privKey = CkPrivateKey();

  // Load an Ed25519 (EdDSA) private key from a PEM file.
  try {
    privKey.loadPemFile('qa_data/eddsa/ed25519.pem');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final jwt = CkJwt();

  // Build the JOSE header
  final jose = CkJsonObject();

  // -----------------------------------------------------------------
  // Note: This example requires Chilkat v9.5.0.95 or greater.
  // -----------------------------------------------------------------
  jose.appendString('alg', 'EdDSA');
  jose.appendString('typ', 'JWT');

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

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

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

  // (optional)  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.autoCompact = true;

  // Create the JWT token.
  final token = jwt.createJwtPk(jose.emit(), claims.emit(), privKey);

  print(token);

  // Example output:
  // eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJodHRwOi8vZXhhbXBsZS5vcmciLCJzdWIiOiJKb2huIiwiYXVkIjoiaHR0cDovL2V4YW1wbGUuY29tIiwiaWF0IjoxNjg3OTcwNjgyLCJuYmYiOjE2ODc5NzA2ODIsImV4cCI6MTY4Nzk3NDI4Mn0.eyfrDJfuWJSJVJPfAUYb_p_c-LF_YULHGRaZx82MLLjMLCCFEEGckp8icuayf5bLW9ah20LzYYt0JgOBIB0RDg
}