jwt_generator 0.0.3

A simple pure dart package used for creating and validating Json Web Tokens using the private and public key provided, refer to documentation for more information.

JWT GENERATOR

Overview

This package is used for generating JWT using rsa_pkcs and pointycastle

FEATURES

• **JWT GENERATOR Generates JWT

Installation

For Dart use:

dart pub add jwt_manager

For Flutter use:

flutter pub add jwt_manager

You can manually edit your pubspec.yaml file this:

dependencies:
  jwt_manager: ^0.0.1

You can run a dart pub get or flutter pub get for Dart and Flutter respectively to complete installation.

Usage

Example:

import 'package:jwt_generator/jwt_generator.dart';

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

  //This private key was AI Generated
  final pemPrivateKey = '''
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
''';

//This public key was AI generated
  final pemPublicKey = '''
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAy1YRVTIxeB6YU88f6Ohs
HtZUB0ll/9Wi72lgzohPRHkHHb3Jy193Y41wmtYNhxY9GHQ6QjciXP4LtQUqf+WO
f70O9x3xDJLPuHx8Zw25Cz+S4r0tKnSNnh7gBi0QJ5PYv+gIJxgV/QlQFVencXbp
aohkU/LInxVMoo8bkta160OOBSW25JBSxF8tY49SDfxcLyh91BD+E/8cOplGAXaY
yPbsVUn76Y83JZ+jIzZWXNvap9XqSbfqXzjVQuOQ/XdrQOS5u1c+F6OzWgdSa7OB
j479yzfuh7z+W+NpZAKjFihvh1MEnnLd61Htu/1D5/L/zkv+lZ5sjAps0aWRkwZ+
CQIDAQAB
-----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);

  // Split the jwt using the period as a seperator
  List<String> rawJwt = jwtToken.split('.');

  // pick the last index as the base64signature
  String base64signature = rawJwt.last;

  // Remove the last item on the list
  rawJwt.removeLast();

  // join the remain values using the period as a pattern
  String signedData = rawJwt.join('.');

  final isVerified = rsaVerifier.verify(signedData, base64signature);

  //Log the value
  print('Is signature verified: $isVerified');
}