encrypt method

@override Future<String> encrypt(String data, { String? key, })

Encrypt data

Implementation

@override
Future<String> encrypt(String data, {String? key}) async {
  if (key == null || key.isEmpty) {
    throw ArgumentError('Encryption key is required');
  }

  // Note: This is a placeholder implementation
  // For production, use the 'encrypt' package:
  //
  // import 'package:encrypt/encrypt.dart' as encrypt;
  //
  // final encryptKey = encrypt.Key.fromUtf8(key.padRight(32).substring(0, 32));
  // final iv = encrypt.IV.fromLength(16);
  // final encrypter = encrypt.Encrypter(encrypt.AES(encryptKey));
  // final encrypted = encrypter.encrypt(data, iv: iv);
  // return encrypted.base64;

  if (kDebugMode) {
    debugPrint('Warning: Using placeholder AES encryption. Use "encrypt" package for production.');
  }

  // Fallback to XOR for now
  return XOREncryption().encrypt(data, key: key);
}