Dart

bitzlato.com whoami

See more JSON Web Token (JWT) Examples

Demonstrates sending a request to the bitzlato.com whoami endpoint using an ES256 JWT token for authentication. 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.

  //  Use the following ECC key loaded from JWK format.
  final jwk = CkJsonObject();
  jwk.updateString('kty', 'EC');
  jwk.updateString('crv', 'P-256');
  jwk.updateString('x', '...');
  jwk.updateString('y', '...');
  jwk.updateString('d', '...');

  final eccKey = CkPrivateKey();
  try {
    eccKey.loadJwk(jwk.emit());
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final jwt = CkJwt();

  // Build the JOSE header
  final jose = CkJsonObject();
  jose.appendString('format', 'compact');
  jose.appendString('alg', 'ES256');

  // Now build the JWT claims (also known as the payload)

  // Our JWT claims will contain members as shown here:

  // 	{
  // 	  "email":"your_email@example.com",
  // 	  "aud":"usr",
  // 	  "iat":"1588286154",
  // 	  "jti":"555D9123"
  // 	}

  final claims = CkJsonObject();
  claims.appendString('jti', '555D9123');
  claims.appendString('email', 'your_email@example.com');

  // Set the timestamp of when the JWT was created to now minus 60 seconds
  final curDateTime = jwt.genNumericDate(-60);
  claims.addIntAt(-1, 'iat', curDateTime);

  // Set the "not process before" timestamp to now minus 60 seconds
  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);

  claims.appendString('aud', 'usr');

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

  // Create the JWT token.  This is where the RSA signature is created.
  final jwtToken = jwt.createJwtPk(jose.emit(), claims.emit(), eccKey);

  print(jwtToken);

  // Send the HTTPS GET with the jwt_token used for Authorization.
  final http = CkHttp();
  http.authToken = jwtToken;
  final String responseStr;
  try {
    responseStr = http.quickGetStr('https://bitzlato.com/api/auth/whoami');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('status code = ${http.lastStatus}');
  print(responseStr);
}