Your Passwords.
Your Control.
Zero Compromise.

// VaultLock Encryption Service
class EncryptionService {
  static const int keyIterations = 10000;
  static const int keyLength = 32; // 256 bits

  // Derive encryption key using PBKDF2-SHA256
  Future<Uint8List> deriveKey(String password, Uint8List salt) async {
    final pbkdf2 = PBKDF2KeyDerivator(HMac(SHA256Digest(), 64));
    pbkdf2.init(Pbkdf2Parameters(salt, keyIterations, keyLength));
    return pbkdf2.process(utf8.encode(password));
  }

  // Encrypt data using AES-256-GCM
  Future<EncryptedData> encrypt(String plaintext, Uint8List key) async {
    final iv = generateSecureRandom(12);
    final cipher = GCMBlockCipher(AESEngine())
      ..init(true, AEADParameters(KeyParameter(key), 128, iv, Uint8List(0)));
    
    final encrypted = cipher.process(utf8.encode(plaintext));
    return EncryptedData(iv: iv, ciphertext: encrypted);
  }
}