jwt_generator 0.0.1

A package for generating JWT.

example/jwt_generator_example.dart

import 'package:jwt_generator/jwt_generator.dart';

void main() {
  // Creating a token
  final tokenDto = FcmTokenDto(
    iss: '[e-mail]',
    iat: DateTime(2001),
  );

  final pemPrivateKey = '''
-----BEGIN RSA PRIVATE KEY-----
MIIBOQIBAAJAXWRPQyGlEY+SXz8Uslhe+MLjTgWd8lf/nA0hgCm9JFKC1tq1S73c
Q9naClNXsMqY7pwPt1bSY8jYRqHHbdoUvwIDAQABAkAfJkz1pCwtfkig8iZSEf2j
VUWBiYgUA9vizdJlsAZBLceLrdk8RZF2YOYCWHrpUtZVea37dzZJe99Dr53K0UZx
AiEAtyHQBGoCVHfzPM//a+4tv2ba3tx9at+3uzGR86YNMzcCIQCCjWHcLW/+sQTW
OXeXRrtxqHPp28ir8AVYuNX0nT1+uQIgJm158PMtufvRlpkux78a6mby1oD98Ecx
jp5AOhhF/NECICyHsQN69CJ5mt6/R01wMOt5u9/eubn76rbyhPgk0h7xAiEAjn6m
EmLwkIYD9VnZfp9+2UoWSh0qZiTIHyNwFpJH78o=
-----END RSA PRIVATE KEY-----
''';
  final pemPublicKey = '''
-----BEGIN PUBLIC KEY-----
MFswDQYJKoZIhvcNAQEBBQADSgAwRwJAXWRPQyGlEY+SXz8Uslhe+MLjTgWd8lf/
nA0hgCm9JFKC1tq1S73cQ9naClNXsMqY7pwPt1bSY8jYRqHHbdoUvwIDAQAB
-----END PUBLIC KEY-----
''';

  // Creating an encoded and signed token

  // RsaKeyParser extracts private key from a pem string
  final parser = RsaKeyParser();
  final rsaPrivateKey = parser.extractPrivateKey(pemPrivateKey);

  // Create RsaSignifier for signing
  final rsaSignifier = RsaSignifier(privateKey: rsaPrivateKey);

  // JwtBuilder encodes the token to string and signs it
  final jwtBuilder = JwtBuilder(signifier: rsaSignifier);
  final jwtToken = jwtBuilder.buildToken(tokenDto);

  print('Encoded JWT: $jwtToken');

  // Checking the signature with the public key

  // Extract public key from a pem string
  final rsaPublicKey = parser.extractPublicKey(pemPublicKey);

  // Verifying the signature
  final rsaVerifier = RsaSignatureVerifier(publicKey: rsaPublicKey);
  final isVerified = rsaVerifier.verify(
      'eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzb21lQGVtYWlsLmNvbSIsInNjb3BlIjoiaHR0cHM6Ly93d3cuZ29vZ2xlYXBpcy5jb20vYXV0aC9maXJlYmFzZS5tZXNzYWdpbmciLCJhdWQiOiJodHRwczovL29hdXRoMi5nb29nbGVhcGlzLmNvbS90b2tlbiIsImV4cCI6OTc4Mjk2NDAwLCJpYXQiOjk3ODI5MjgwMH0',
      'cqABcd-RMTQvxvI2zKPNek-UPd7fY0796B8hN9pDYyyrRWDOy7LlufaCvMlDIXrOS-zJMTsFbPQ8UMYY2Ofkz_lloCy4K5IhGZQIOjYvfhIZhp9PxMvj0XhRsezERQoK4air_lcUEh1LJ1o9j_i4P0XyOqGhcgcKKZLrc3zziSbb-vEIKu9gX4WsVYpyv4CK-o9AOAxXqukebcrIdURhf0V8o1hiVwTTfX5_x4j_XF99ZqjoFCTTcieM2F7F9-LFmwqy9Cg0E_UsyPC7aeR_UADLfE-1SBfYTSPdxAZ0HVfYQcET7hnzZJzz_NhyD62fLQzj6Eqag8_fWeZr_NYsPg');

  print('Is signature verified: $isVerified');
}